3694 lines
104 KiB
C
3694 lines
104 KiB
C
/* makeinfo -- convert Texinfo source into other formats.
|
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$Id: makeinfo.c,v 1.171 1999/09/19 15:24:44 karl Exp $
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Copyright (C) 1987, 92, 93, 94, 95, 96, 97, 98, 99
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Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
|
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
|
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any later version.
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||
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
|
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Makeinfo was authored by Brian Fox (bfox@ai.mit.edu). */
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#include "system.h"
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#include "getopt.h"
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#define COMPILING_MAKEINFO
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#include "makeinfo.h"
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#include "cmds.h"
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#include "files.h"
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#include "footnote.h"
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#include "html.h"
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#include "index.h"
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#include "insertion.h"
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#include "macro.h"
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#include "node.h"
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#include "toc.h"
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/* We'd like to take advantage of _doprnt if it's around, a la error.c,
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but then we'd have no VA_SPRINTF. */
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#if HAVE_VPRINTF
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# if __STDC__
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# include <stdarg.h>
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# define VA_START(args, lastarg) va_start(args, lastarg)
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# else
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# include <varargs.h>
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# define VA_START(args, lastarg) va_start(args)
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# endif
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# define VA_FPRINTF(file, fmt, ap) vfprintf (file, fmt, ap)
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# define VA_SPRINTF(str, fmt, ap) vsprintf (str, fmt, ap)
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#else /* not HAVE_VPRINTF */
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# define VA_START(args, lastarg)
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||
# define va_alist a1, a2, a3, a4, a5, a6, a7, a8
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# define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
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# define va_end(args)
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||
#endif
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/* DJGPP supports /dev/null, which is okay for Unix aficionados,
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||
shell scripts and Makefiles, but interactive DOS die-hards
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||
would probably want to have NUL as well. */
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#ifdef __DJGPP__
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# define ALSO_NULL_DEVICE "NUL"
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#else
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# define ALSO_NULL_DEVICE ""
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||
#endif
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/* You can change some of the behavior of Makeinfo by changing the
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following defines: */
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/* Define INDENT_PARAGRAPHS_IN_TABLE if you want the paragraphs which
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appear within an @table, @ftable, or @itemize environment to have
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||
standard paragraph indentation. Without this, such paragraphs have
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no starting indentation. */
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/* #define INDENT_PARAGRAPHS_IN_TABLE */
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/* Define PARAGRAPH_START_INDENT to be the amount of indentation that
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the first lines of paragraphs receive by default, where no other
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value has been specified. Users can change this value on the command
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line, with the --paragraph-indent option, or within the texinfo file,
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with the @paragraphindent command. */
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#define PARAGRAPH_START_INDENT 3
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/* Define DEFAULT_PARAGRAPH_SPACING as the number of blank lines that you
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wish to appear between paragraphs. A value of 1 creates a single blank
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line between paragraphs. Paragraphs are defined by 2 or more consecutive
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newlines in the input file (i.e., one or more blank lines). */
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#define DEFAULT_PARAGRAPH_SPACING 1
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/* Global variables. */
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/* The output file name. */
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char *output_filename = NULL;
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/* Name of the output file that the user elected to pass on the command line.
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Such a name overrides any name found with the @setfilename command. */
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char *command_output_filename = NULL;
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/* Flags which control initial output string for xrefs. */
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int px_ref_flag = 0;
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int ref_flag = 0;
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#define INITIAL_PARAGRAPH_SPACE 5000
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int paragraph_buffer_len = INITIAL_PARAGRAPH_SPACE;
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/* The amount of indentation to add at the starts of paragraphs.
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0 means don't change existing indentation at paragraph starts.
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> 0 is amount to indent new paragraphs by.
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< 0 means indent to column zero by removing indentation if necessary.
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This is normally zero, but some people prefer paragraph starts to be
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somewhat more indented than paragraph bodies. A pretty value for
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this is 3. */
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int paragraph_start_indent = PARAGRAPH_START_INDENT;
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/* Indentation that is pending insertion. We have this for hacking lines
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which look blank, but contain whitespace. We want to treat those as
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blank lines. */
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int pending_indent = 0;
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/* The index in our internal command table of the currently
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executing command. */
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int command_index;
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/* A search string which is used to find the first @setfilename. */
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char setfilename_search[] =
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{ COMMAND_PREFIX,
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's', 'e', 't', 'f', 'i', 'l', 'e', 'n', 'a', 'm', 'e', 0 };
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||
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||
/* Values for calling handle_variable_internal (). */
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#define SET 1
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#define CLEAR 2
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#define IFSET 3
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#define IFCLEAR 4
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|
||
/* Flags controlling the operation of the program. */
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||
/* Default is to remove output if there were errors. */
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int force = 0;
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||
/* Default is to notify users of bad choices. */
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int print_warnings = 1;
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||
/* Number of errors that we tolerate on a given fileset. */
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int max_error_level = 100;
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||
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||
/* The actual last inserted character. Note that this may be something
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other than NEWLINE even if last_char_was_newline is 1. */
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int last_inserted_character = 0;
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/* Nonzero means that a newline character has already been
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inserted, so close_paragraph () should insert one less. */
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||
int line_already_broken = 0;
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/* When nonzero we have finished an insertion (see end_insertion ()) and we
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want to ignore false continued paragraph closings. */
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int insertion_paragraph_closed = 0;
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/* Nonzero means attempt to make all of the lines have fill_column width. */
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int do_justification = 0;
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typedef struct brace_element
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{
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struct brace_element *next;
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COMMAND_FUNCTION *proc;
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char *command;
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int pos, line;
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int in_fixed_width_font;
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} BRACE_ELEMENT;
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BRACE_ELEMENT *brace_stack = NULL;
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extern void do_multitable (), end_multitable ();
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void push_node_filename (), pop_node_filename ();
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void remember_error ();
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void convert_from_stream (), convert_from_file (), convert_from_loaded_file ();
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void init_internals (), init_paragraph (), init_brace_stack ();
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void init_insertion_stack (), init_indices ();
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void init_tag_table (), write_tag_table (), write_tag_table_internal ();
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void validate_file (), validate_other_references (), split_file ();
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void free_node_references (), handle_variable ();
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void handle_variable_internal ();
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void normalize_node_name ();
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void add_anchor_name ();
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void free_node_node_references (), remember_node_node_reference ();
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char **get_brace_args ();
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int array_len ();
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void free_array ();
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static int end_of_sentence_p ();
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static void isolate_nodename ();
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void reader_loop ();
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void remember_brace (), remember_brace_1 ();
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void pop_and_call_brace (), discard_braces ();
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void add_word (), add_char (), insert (), flush_output ();
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void insert_string ();
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void close_paragraph ();
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void ignore_blank_line ();
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void do_flush_right_indentation (), discard_insertions ();
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void start_paragraph (), indent ();
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void inhibit_output_flushing (), uninhibit_output_flushing ();
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int set_paragraph_indent ();
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int self_delimiting (), search_forward ();
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int multitable_item (), number_of_node ();
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extern void add_link (), add_escaped_anchor_name ();
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void me_execute_string_keep_state ();
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void maybe_update_execution_strings ();
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extern char *escape_string ();
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extern void insert_html_tag ();
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extern void sectioning_html ();
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extern void add_link ();
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#if defined (VA_FPRINTF) && __STDC__
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/* Unfortunately we must use prototypes if we are to use <stdarg.h>. */
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void add_word_args (char *, ...);
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void execute_string (char *, ...);
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#else
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void add_word_args ();
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void execute_string ();
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#endif /* no prototypes */
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/* Error handling. */
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/* Number of errors encountered. */
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int errors_printed = 0;
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/* Print the last error gotten from the file system. */
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int
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fs_error (filename)
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char *filename;
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{
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remember_error ();
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perror (filename);
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return 0;
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}
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/* Print an error message, and return false. */
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void
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#if defined (VA_FPRINTF) && __STDC__
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error (char *format, ...)
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#else
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error (format, va_alist)
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char *format;
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va_dcl
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#endif
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{
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#ifdef VA_FPRINTF
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va_list ap;
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#endif
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remember_error ();
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VA_START (ap, format);
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#ifdef VA_FPRINTF
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VA_FPRINTF (stderr, format, ap);
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#else
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fprintf (stderr, format, a1, a2, a3, a4, a5, a6, a7, a8);
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#endif /* not VA_FPRINTF */
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va_end (ap);
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putc ('\n', stderr);
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}
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/* Just like error (), but print the line number as well. */
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void
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#if defined (VA_FPRINTF) && __STDC__
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line_error (char *format, ...)
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#else
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line_error (format, va_alist)
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char *format;
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va_dcl
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#endif
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{
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#ifdef VA_FPRINTF
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va_list ap;
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#endif
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remember_error ();
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fprintf (stderr, "%s:%d: ", input_filename, line_number);
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VA_START (ap, format);
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#ifdef VA_FPRINTF
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VA_FPRINTF (stderr, format, ap);
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#else
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fprintf (stderr, format, a1, a2, a3, a4, a5, a6, a7, a8);
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#endif /* not VA_FPRINTF */
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va_end (ap);
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fprintf (stderr, ".\n");
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}
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void
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#if defined (VA_FPRINTF) && __STDC__
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warning (char *format, ...)
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#else
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warning (format, va_alist)
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char *format;
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va_dcl
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#endif
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{
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#ifdef VA_FPRINTF
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va_list ap;
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#endif
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if (print_warnings)
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{
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fprintf (stderr, _("%s:%d: warning: "), input_filename, line_number);
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||
VA_START (ap, format);
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#ifdef VA_FPRINTF
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VA_FPRINTF (stderr, format, ap);
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#else
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fprintf (stderr, format, a1, a2, a3, a4, a5, a6, a7, a8);
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||
#endif /* not VA_FPRINTF */
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va_end (ap);
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fprintf (stderr, ".\n");
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||
}
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||
}
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||
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||
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||
/* Remember that an error has been printed. If more than
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max_error_level have been printed, then exit the program. */
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void
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remember_error ()
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||
{
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||
errors_printed++;
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||
if (max_error_level && (errors_printed > max_error_level))
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||
{
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||
fprintf (stderr, _("Too many errors! Gave up.\n"));
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||
flush_file_stack ();
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||
cm_bye ();
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||
xexit (1);
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||
}
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||
}
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||
/* The other side of a malformed expression. */
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void
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misplaced_brace ()
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{
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line_error (_("Misplaced %c"), '}');
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}
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/* Main. */
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||
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||
/* Display the version info of this invocation of Makeinfo. */
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static void
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print_version_info ()
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{
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printf ("makeinfo (GNU %s) %s\n", PACKAGE, VERSION);
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}
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||
|
||
/* If EXIT_VALUE is zero, print the full usage message to stdout.
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||
Otherwise, just say to use --help for more info.
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||
Then exit with EXIT_VALUE. */
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||
static void
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||
usage (exit_value)
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||
int exit_value;
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||
{
|
||
if (exit_value != 0)
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||
fprintf (stderr, _("Try `%s --help' for more information.\n"), progname);
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else
|
||
{
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||
printf (_("Usage: %s [OPTION]... TEXINFO-FILE...\n\
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\n\
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Translate Texinfo source documentation to various other formats:\n\
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Info files suitable for reading online with Emacs or standalone GNU Info\n\
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(by default); plain text (with --no-headers); or HTML (with --html).\n\
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||
\n\
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||
Options:\n\
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--commands-in-node-names allow @ commands in node names.\n\
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||
-D VAR define a variable, as with @set.\n\
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||
-E, --macro-expand FILE output macro-expanded source to FILE.\n\
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||
--error-limit=NUM quit after NUM errors (default %d).\n\
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||
--fill-column=NUM break Info lines at NUM characters (default %d).\n\
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||
--footnote-style=STYLE output footnotes according to STYLE:\n\
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||
`separate' to place footnotes in their own node,\n\
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||
`end' to place the footnotes at the end of the\n\
|
||
node in which they are defined (the default).\n\
|
||
--force preserve output even if errors.\n\
|
||
--help display this help and exit.\n\
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||
--html output HTML rather than Info format;\n\
|
||
-I DIR append DIR to the @include search path.\n\
|
||
--ifhtml process @ifhtml and @html text even when not\n\
|
||
generating HTML.\n\
|
||
--ifinfo process @ifinfo text even when generating HTML.\n\
|
||
--iftex process @iftex and @tex text.\n\
|
||
implies --no-split.\n"),
|
||
progname, max_error_level, fill_column);
|
||
printf (_("\
|
||
--no-headers suppress Info node separators and Node: lines and\n\
|
||
write to standard output without --output.\n\
|
||
--no-ifhtml do not process @ifhtml and @html text.\n\
|
||
--no-ifinfo do not process @ifinfo text.\n\
|
||
--no-iftex do not process @iftex and @tex text.\n\
|
||
--no-split suppress splitting of large Info output files or\n\
|
||
generation of one HTML file per node.\n\
|
||
--no-validate suppress node cross-reference validation.\n\
|
||
--no-warn suppress warnings (but not errors).\n\
|
||
--number-sections include chapter, section, etc. numbers in output.\n\
|
||
-o, --output=FILE output to FILE, ignoring any @setfilename.\n\
|
||
-P DIR prepend DIR to the @include search path.\n\
|
||
--paragraph-indent=VAL indent Info paragraphs by VAL spaces (default %d).\n\
|
||
if VAL is `none', do not indent;\n\
|
||
if VAL is `asis', preserve existing indentation.\n\
|
||
--reference-limit=NUM warn about at most NUM references (default %d).\n\
|
||
-U VAR undefine a variable, as with @clear.\n\
|
||
-v, --verbose explain what is being done.\n\
|
||
--version display version information and exit.\n\
|
||
"),
|
||
paragraph_start_indent, reference_warning_limit);
|
||
}
|
||
|
||
puts (_("\n\
|
||
The defaults for the @if... conditionals depend on the output format:\n\
|
||
if generating HTML, --ifhtml is on and the others are off;\n\
|
||
if generating Info or plain text, --ifinfo is on and the others are off.\n\
|
||
\n\
|
||
Examples:\n\
|
||
makeinfo foo.texi write Info to foo's @setfilename\n\
|
||
makeinfo --html foo.texi write HTML to foo's @setfilename\n\
|
||
makeinfo --no-headers -o - foo.texi write plain text to standard output\n\
|
||
makeinfo --number-sections foo.texi write Info with numbered sections\n\
|
||
makeinfo --no-split foo.texi write one Info file however big\n\
|
||
\n\
|
||
Email bug reports to bug-texinfo@gnu.org,\n\
|
||
general questions and discussion to help-texinfo@gnu.org."));
|
||
xexit (exit_value);
|
||
}
|
||
|
||
struct option long_options[] =
|
||
{
|
||
{ "commands-in-node-names", 0, &expensive_validation, 1 },
|
||
{ "error-limit", 1, 0, 'e' },
|
||
{ "fill-column", 1, 0, 'f' },
|
||
{ "footnote-style", 1, 0, 's' },
|
||
{ "force", 0, &force, 1 },
|
||
{ "help", 0, 0, 'h' },
|
||
{ "html", 0, 0, 'w' },
|
||
{ "ifhtml", 0, &process_html, 1 },
|
||
{ "ifinfo", 0, &process_info, 1 },
|
||
{ "iftex", 0, &process_tex, 1 },
|
||
{ "macro-expand", 1, 0, 'E' },
|
||
{ "no-headers", 0, &no_headers, 1 },
|
||
{ "no-ifhtml", 0, &process_html, 0 },
|
||
{ "no-ifinfo", 0, &process_info, 0 },
|
||
{ "no-iftex", 0, &process_tex, 0 },
|
||
{ "no-number-footnotes", 0, &number_footnotes, 0 },
|
||
{ "no-number-sections", 0, &number_sections, 0 },
|
||
{ "no-pointer-validate", 0, &validating, 0 },
|
||
{ "no-split", 0, &splitting, 0 },
|
||
{ "no-validate", 0, &validating, 0 },
|
||
{ "no-warn", 0, &print_warnings, 0 },
|
||
{ "number-footnotes", 0, &number_footnotes, 1 },
|
||
{ "number-sections", 0, &number_sections, 1 },
|
||
{ "output", 1, 0, 'o' },
|
||
{ "paragraph-indent", 1, 0, 'p' },
|
||
{ "reference-limit", 1, 0, 'r' },
|
||
{ "verbose", 0, &verbose_mode, 1 },
|
||
{ "version", 0, 0, 'V' },
|
||
{NULL, 0, NULL, 0}
|
||
};
|
||
|
||
/* For each file mentioned in the command line, process it, turning
|
||
Texinfo commands into wonderfully formatted output text. */
|
||
int
|
||
main (argc, argv)
|
||
int argc;
|
||
char **argv;
|
||
{
|
||
extern int errors_printed;
|
||
int c, ind;
|
||
int reading_from_stdin = 0;
|
||
|
||
#ifdef HAVE_SETLOCALE
|
||
/* Do not use LC_ALL, because LC_NUMERIC screws up the scanf parsing
|
||
of the argument to @multicolumn. */
|
||
setlocale (LC_TIME, "");
|
||
setlocale (LC_MESSAGES, "");
|
||
setlocale (LC_CTYPE, "");
|
||
setlocale (LC_COLLATE, "");
|
||
#endif
|
||
|
||
/* Set the text message domain. */
|
||
bindtextdomain (PACKAGE, LOCALEDIR);
|
||
textdomain (PACKAGE);
|
||
|
||
/* Parse argument flags from the input line. */
|
||
while ((c = getopt_long (argc, argv, "D:e:E:f:hI:o:p:P:r:s:U:vV:w",
|
||
long_options, &ind)) != EOF)
|
||
{
|
||
if (c == 0 && long_options[ind].flag == 0)
|
||
c = long_options[ind].val;
|
||
|
||
switch (c)
|
||
{
|
||
case 'D':
|
||
case 'U':
|
||
/* User specified variable to set or clear. */
|
||
handle_variable_internal ((c == 'D') ? SET : CLEAR, optarg);
|
||
break;
|
||
|
||
case 'e': /* --error-limit */
|
||
if (sscanf (optarg, "%d", &max_error_level) != 1)
|
||
{
|
||
fprintf (stderr,
|
||
_("%s: %s arg must be numeric, not `%s'.\n"),
|
||
"--error-limit", progname, optarg);
|
||
usage (stderr, 1);
|
||
}
|
||
break;
|
||
|
||
case 'E': /* --macro-expand */
|
||
if (!macro_expansion_output_stream)
|
||
{
|
||
macro_expansion_filename = optarg;
|
||
macro_expansion_output_stream
|
||
= strcmp (optarg, "-") == 0 ? stdout : fopen (optarg, "w");
|
||
if (!macro_expansion_output_stream)
|
||
error (_("Couldn't open macro expansion output `%s'"), optarg);
|
||
}
|
||
else
|
||
error (_("Cannot specify more than one macro expansion output"));
|
||
break;
|
||
|
||
case 'f': /* --fill-column */
|
||
if (sscanf (optarg, "%d", &fill_column) != 1)
|
||
{
|
||
fprintf (stderr,
|
||
_("%s: %s arg must be numeric, not `%s'.\n"),
|
||
"--fill-column", progname, optarg);
|
||
usage (1);
|
||
}
|
||
break;
|
||
|
||
case 'h': /* --help */
|
||
usage (0);
|
||
break;
|
||
|
||
case 'I':
|
||
/* Append user-specified dir to include file path. */
|
||
if (!include_files_path)
|
||
include_files_path = xstrdup (".");
|
||
|
||
include_files_path = (char *)
|
||
xrealloc (include_files_path,
|
||
2 + strlen (include_files_path) + strlen (optarg));
|
||
strcat (include_files_path, PATH_SEP);
|
||
strcat (include_files_path, optarg);
|
||
break;
|
||
|
||
case 'o': /* --output */
|
||
command_output_filename = xstrdup (optarg);
|
||
break;
|
||
|
||
case 'p': /* --paragraph-indent */
|
||
if (set_paragraph_indent (optarg) < 0)
|
||
{
|
||
fprintf (stderr,
|
||
_("%s: --paragraph-indent arg must be numeric/`none'/`asis', not `%s'.\n"),
|
||
progname, optarg);
|
||
usage (1);
|
||
}
|
||
break;
|
||
|
||
case 'P':
|
||
/* Prepend user-specified include dir to include path. */
|
||
if (!include_files_path)
|
||
{
|
||
include_files_path = xstrdup (optarg);
|
||
include_files_path = xrealloc (include_files_path,
|
||
strlen (include_files_path) + 3); /* 3 for ":.\0" */
|
||
strcat (strcat (include_files_path, PATH_SEP), ".");
|
||
}
|
||
else
|
||
{
|
||
char *tmp = xstrdup (include_files_path);
|
||
include_files_path = xrealloc (include_files_path,
|
||
strlen (include_files_path) + strlen (optarg) + 2); /* 2 for ":\0" */
|
||
strcpy (include_files_path, optarg);
|
||
strcat (include_files_path, ":");
|
||
strcat (include_files_path, tmp);
|
||
free (tmp);
|
||
}
|
||
break;
|
||
|
||
case 'r': /* --reference-limit */
|
||
if (sscanf (optarg, "%d", &reference_warning_limit) != 1)
|
||
{
|
||
fprintf (stderr,
|
||
_("%s: %s arg must be numeric, not `%s'.\n"),
|
||
"--reference-limit", progname, optarg);
|
||
usage (1);
|
||
}
|
||
break;
|
||
|
||
case 's': /* --footnote-style */
|
||
if (set_footnote_style (optarg) < 0)
|
||
{
|
||
fprintf (stderr,
|
||
_("%s: --footnote-style arg must be `separate' or `end', not `%s'.\n"),
|
||
progname, optarg);
|
||
usage (1);
|
||
}
|
||
footnote_style_preset = 1;
|
||
break;
|
||
|
||
case 'v':
|
||
verbose_mode++;
|
||
break;
|
||
|
||
case 'V': /* --version */
|
||
print_version_info ();
|
||
puts ("");
|
||
printf (_("Copyright (C) %s Free Software Foundation, Inc.\n\
|
||
There is NO warranty. You may redistribute this software\n\
|
||
under the terms of the GNU General Public License.\n\
|
||
For more information about these matters, see the files named COPYING.\n"),
|
||
"1999");
|
||
exit (0);
|
||
break;
|
||
|
||
case 'w': /* --html */
|
||
html = 1;
|
||
process_html = 1;
|
||
process_info = 0;
|
||
splitting = 0; /* too complicated for now */
|
||
break;
|
||
|
||
case '?':
|
||
usage (1);
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (!validating)
|
||
expensive_validation = 0;
|
||
|
||
if (optind == argc)
|
||
{
|
||
/* Check to see if input is a file. If so, process that. */
|
||
if (!isatty (fileno (stdin)))
|
||
reading_from_stdin = 1;
|
||
else
|
||
{
|
||
fprintf (stderr, _("%s: missing file argument.\n"), progname);
|
||
usage (1);
|
||
}
|
||
}
|
||
|
||
if (no_headers)
|
||
{
|
||
if (html && splitting)
|
||
{ /* --no-headers --no-split --html indicates confusion. */
|
||
fprintf (stderr,
|
||
"%s: --no-headers conflicts with --no-split for --html.\n",
|
||
progname);
|
||
usage (1);
|
||
}
|
||
|
||
/* --no-headers implies --no-split. */
|
||
splitting = 0;
|
||
|
||
/* If the user did not specify an output file, use stdout. */
|
||
if (!command_output_filename)
|
||
command_output_filename = xstrdup ("-");
|
||
}
|
||
|
||
if (verbose_mode)
|
||
print_version_info ();
|
||
|
||
/* Remaining arguments are file names of texinfo files.
|
||
Convert them, one by one. */
|
||
if (!reading_from_stdin)
|
||
{
|
||
while (optind != argc)
|
||
convert_from_file (argv[optind++]);
|
||
}
|
||
else
|
||
convert_from_stream (stdin, "stdin");
|
||
|
||
return errors_printed ? 2 : 0;
|
||
}
|
||
|
||
|
||
/* Hacking tokens and strings. */
|
||
|
||
/* Return the next token as a string pointer. We cons the string. */
|
||
char *
|
||
read_token ()
|
||
{
|
||
int i, character;
|
||
char *result;
|
||
|
||
/* If the first character to be read is self-delimiting, then that
|
||
is the command itself. */
|
||
character = curchar ();
|
||
if (self_delimiting (character))
|
||
{
|
||
input_text_offset++;
|
||
|
||
if (character == '\n')
|
||
line_number++;
|
||
|
||
result = xstrdup (" ");
|
||
*result = character;
|
||
return result;
|
||
}
|
||
|
||
for (i = 0; ((input_text_offset != input_text_length)
|
||
&& (character = curchar ())
|
||
&& command_char (character));
|
||
i++, input_text_offset++);
|
||
result = xmalloc (i + 1);
|
||
memcpy (result, &input_text[input_text_offset - i], i);
|
||
result[i] = 0;
|
||
return result;
|
||
}
|
||
|
||
/* Return nonzero if CHARACTER is self-delimiting. */
|
||
int
|
||
self_delimiting (character)
|
||
int character;
|
||
{
|
||
/* @; and @\ are not Texinfo commands, but they are listed here
|
||
anyway. I don't know why. --karl, 10aug96. */
|
||
return strchr ("~{|}`^\\@?=;:.-,*\'\" !\n\t", character) != NULL;
|
||
}
|
||
|
||
/* Clear whitespace from the front and end of string. */
|
||
void
|
||
canon_white (string)
|
||
char *string;
|
||
{
|
||
int len = strlen (string);
|
||
int x;
|
||
|
||
if (!len)
|
||
return;
|
||
|
||
for (x = 0; x < len; x++)
|
||
{
|
||
if (!cr_or_whitespace (string[x]))
|
||
{
|
||
strcpy (string, string + x);
|
||
break;
|
||
}
|
||
}
|
||
len = strlen (string);
|
||
if (len)
|
||
len--;
|
||
while (len > -1 && cr_or_whitespace (string[len]))
|
||
len--;
|
||
string[len + 1] = 0;
|
||
}
|
||
|
||
/* Bash STRING, replacing all whitespace with just one space. */
|
||
void
|
||
fix_whitespace (string)
|
||
char *string;
|
||
{
|
||
char *temp = xmalloc (strlen (string) + 1);
|
||
int string_index = 0;
|
||
int temp_index = 0;
|
||
int c;
|
||
|
||
canon_white (string);
|
||
|
||
while (string[string_index])
|
||
{
|
||
c = temp[temp_index++] = string[string_index++];
|
||
|
||
if (c == ' ' || c == '\n' || c == '\t')
|
||
{
|
||
temp[temp_index - 1] = ' ';
|
||
while ((c = string[string_index]) && (c == ' ' ||
|
||
c == '\t' ||
|
||
c == '\n'))
|
||
string_index++;
|
||
}
|
||
}
|
||
temp[temp_index] = 0;
|
||
strcpy (string, temp);
|
||
free (temp);
|
||
}
|
||
|
||
/* Discard text until the desired string is found. The string is
|
||
included in the discarded text. */
|
||
void
|
||
discard_until (string)
|
||
char *string;
|
||
{
|
||
int temp = search_forward (string, input_text_offset);
|
||
|
||
int tt = (temp < 0) ? input_text_length : temp + strlen (string);
|
||
int from = input_text_offset;
|
||
|
||
/* Find out what line we are on. */
|
||
while (from != tt)
|
||
if (input_text[from++] == '\n')
|
||
line_number++;
|
||
|
||
if (temp < 0)
|
||
{
|
||
input_text_offset = input_text_length - strlen (string);
|
||
|
||
if (strcmp (string, "\n") != 0)
|
||
{
|
||
line_error (_("Expected `%s'"), string);
|
||
return;
|
||
}
|
||
}
|
||
else
|
||
input_text_offset = temp;
|
||
|
||
input_text_offset += strlen (string);
|
||
}
|
||
|
||
/* Read characters from the file until we are at MATCH.
|
||
Place the characters read into STRING.
|
||
On exit input_text_offset is after the match string.
|
||
Return the offset where the string starts. */
|
||
int
|
||
get_until (match, string)
|
||
char *match, **string;
|
||
{
|
||
int len, current_point, x, new_point, tem;
|
||
|
||
current_point = x = input_text_offset;
|
||
new_point = search_forward (match, input_text_offset);
|
||
|
||
if (new_point < 0)
|
||
new_point = input_text_length;
|
||
len = new_point - current_point;
|
||
|
||
/* Keep track of which line number we are at. */
|
||
tem = new_point + (strlen (match) - 1);
|
||
while (x != tem)
|
||
if (input_text[x++] == '\n')
|
||
line_number++;
|
||
|
||
*string = xmalloc (len + 1);
|
||
|
||
memcpy (*string, &input_text[current_point], len);
|
||
(*string)[len] = 0;
|
||
|
||
/* Now leave input_text_offset in a consistent state. */
|
||
input_text_offset = tem;
|
||
|
||
if (input_text_offset > input_text_length)
|
||
input_text_offset = input_text_length;
|
||
|
||
return new_point;
|
||
}
|
||
|
||
/* Replace input_text[FROM .. TO] with its expansion. */
|
||
void
|
||
replace_with_expansion (from, to)
|
||
int from, *to;
|
||
{
|
||
char *xp;
|
||
unsigned xp_len, new_len;
|
||
char *old_input = input_text;
|
||
unsigned raw_len = *to - from;
|
||
char *str;
|
||
|
||
/* The rest of the code here moves large buffers, so let's
|
||
not waste time if the input cannot possibly expand
|
||
into anything. Unfortunately, we cannot avoid expansion
|
||
when we see things like @code etc., even if they only
|
||
asked for expansion of macros, since any Texinfo command
|
||
can be potentially redefined with a macro. */
|
||
if (only_macro_expansion &&
|
||
memchr (input_text + from, COMMAND_PREFIX, raw_len) == 0)
|
||
return;
|
||
|
||
/* Get original string from input. */
|
||
str = xmalloc (raw_len + 1);
|
||
memcpy (str, input_text + from, raw_len);
|
||
str[raw_len] = 0;
|
||
|
||
/* We are going to relocate input_text, so we had better output
|
||
pending portion of input_text now, before the pointer changes. */
|
||
if (macro_expansion_output_stream && !executing_string
|
||
&& !me_inhibit_expansion)
|
||
append_to_expansion_output (from);
|
||
|
||
/* Expand it. */
|
||
xp = expansion (str, 0);
|
||
xp_len = strlen (xp);
|
||
free (str);
|
||
|
||
/* Plunk the expansion into the middle of `input_text' --
|
||
which is terminated by a newline, not a null. Avoid
|
||
expensive move of the rest of the input if the expansion
|
||
has the same length as the original string. */
|
||
if (xp_len != raw_len)
|
||
{
|
||
new_len = from + xp_len + input_text_length - *to + 1;
|
||
if (executing_string)
|
||
{ /* If we are in execute_string, we might need to update
|
||
the relevant element in the execution_strings[] array,
|
||
since it could have to be relocated from under our
|
||
feet. (input_text is reallocated here as well, if needed.) */
|
||
maybe_update_execution_strings (&input_text, new_len);
|
||
}
|
||
else if (new_len > input_text_length + 1)
|
||
/* Don't bother to realloc if we have enough space. */
|
||
input_text = xrealloc (input_text, new_len);
|
||
|
||
memmove (input_text + from + xp_len,
|
||
input_text + *to, input_text_length - *to + 1);
|
||
|
||
*to += xp_len - raw_len;
|
||
/* Since we change input_text_length here, the comparison above
|
||
isn't really valid, but it seems the worst that might happen is
|
||
an extra xrealloc or two, so let's not worry. */
|
||
input_text_length += xp_len - raw_len;
|
||
}
|
||
memcpy (input_text + from, xp, xp_len);
|
||
free (xp);
|
||
|
||
/* Synchronize the macro-expansion pointers with our new input_text. */
|
||
if (input_text != old_input)
|
||
forget_itext (old_input);
|
||
if (macro_expansion_output_stream && !executing_string)
|
||
remember_itext (input_text, from);
|
||
}
|
||
|
||
/* Read characters from the file until we are at MATCH or end of line.
|
||
Place the characters read into STRING. If EXPAND is nonzero,
|
||
expand the text before looking for MATCH for those cases where
|
||
MATCH might be produced by some macro. */
|
||
void
|
||
get_until_in_line (expand, match, string)
|
||
int expand;
|
||
char *match, **string;
|
||
{
|
||
int real_bottom = input_text_length;
|
||
int limit = search_forward ("\n", input_text_offset);
|
||
if (limit < 0)
|
||
limit = input_text_length;
|
||
|
||
/* Replace input_text[input_text_offset .. limit-1] with its expansion.
|
||
This allows the node names and menu entries themselves to be
|
||
constructed via a macro, as in:
|
||
@macro foo{p, q}
|
||
Together: \p\ & \q\.
|
||
@end macro
|
||
|
||
@node @foo{A,B}, next, prev, top
|
||
|
||
Otherwise, the `,' separating the macro args A and B is taken as
|
||
the node argument separator, so the node name is `@foo{A'. This
|
||
expansion is only necessary on the first call, since we expand the
|
||
whole line then. */
|
||
if (expand)
|
||
{
|
||
replace_with_expansion (input_text_offset, &limit);
|
||
}
|
||
|
||
real_bottom = input_text_length;
|
||
input_text_length = limit;
|
||
get_until (match, string);
|
||
input_text_length = real_bottom;
|
||
}
|
||
|
||
void
|
||
get_rest_of_line (expand, string)
|
||
int expand;
|
||
char **string;
|
||
{
|
||
if (expand)
|
||
{
|
||
char *tem;
|
||
|
||
/* Don't expand non-macros in input, since we want them
|
||
intact in the macro-expanded output. */
|
||
only_macro_expansion++;
|
||
get_until_in_line (1, "\n", &tem);
|
||
only_macro_expansion--;
|
||
*string = expansion (tem, 0);
|
||
free (tem);
|
||
}
|
||
else
|
||
get_until_in_line (0, "\n", string);
|
||
|
||
canon_white (*string);
|
||
|
||
if (curchar () == '\n') /* as opposed to the end of the file... */
|
||
{
|
||
line_number++;
|
||
input_text_offset++;
|
||
}
|
||
}
|
||
|
||
/* Backup the input pointer to the previous character, keeping track
|
||
of the current line number. */
|
||
void
|
||
backup_input_pointer ()
|
||
{
|
||
if (input_text_offset)
|
||
{
|
||
input_text_offset--;
|
||
if (curchar () == '\n')
|
||
line_number--;
|
||
}
|
||
}
|
||
|
||
/* Read characters from the file until we are at MATCH or closing brace.
|
||
Place the characters read into STRING. */
|
||
void
|
||
get_until_in_braces (match, string)
|
||
char *match, **string;
|
||
{
|
||
char *temp;
|
||
int i, brace = 0;
|
||
int match_len = strlen (match);
|
||
|
||
for (i = input_text_offset; i < input_text_length; i++)
|
||
{
|
||
if (input_text[i] == '{')
|
||
brace++;
|
||
else if (input_text[i] == '}')
|
||
brace--;
|
||
else if (input_text[i] == '\n')
|
||
line_number++;
|
||
|
||
if (brace < 0 ||
|
||
(brace == 0 && strncmp (input_text + i, match, match_len) == 0))
|
||
break;
|
||
}
|
||
|
||
match_len = i - input_text_offset;
|
||
temp = xmalloc (2 + match_len);
|
||
memcpy (temp, input_text + input_text_offset, match_len);
|
||
temp[match_len] = 0;
|
||
input_text_offset = i;
|
||
*string = temp;
|
||
}
|
||
|
||
/* Converting a file. */
|
||
|
||
/* Convert the file named by NAME. The output is saved on the file
|
||
named as the argument to the @setfilename command. */
|
||
static char *suffixes[] = {
|
||
/* ".txi" is checked first so that on 8+3 DOS filesystems, if they
|
||
have "texinfo.txi" and "texinfo.tex" in the same directory, the
|
||
former is used rather than the latter, due to file name truncation. */
|
||
".txi",
|
||
".texinfo",
|
||
".texi",
|
||
".txinfo",
|
||
"",
|
||
NULL
|
||
};
|
||
|
||
void
|
||
initialize_conversion ()
|
||
{
|
||
init_tag_table ();
|
||
init_indices ();
|
||
init_internals ();
|
||
init_paragraph ();
|
||
|
||
/* This is used for splitting the output file and for doing section
|
||
headings. It was previously initialized in `init_paragraph', but its
|
||
use there loses with the `init_paragraph' calls done by the
|
||
multitable code; the tag indices get reset to zero. */
|
||
output_position = 0;
|
||
}
|
||
|
||
typedef struct generic_list {
|
||
struct generic_list *next;
|
||
} GENERIC_LIST;
|
||
|
||
/* Reverse the chain of structures in LIST. Output the new head
|
||
of the chain. You should always assign the output value of this
|
||
function to something, or you will lose the chain. */
|
||
GENERIC_LIST *
|
||
reverse_list (list)
|
||
GENERIC_LIST *list;
|
||
{
|
||
GENERIC_LIST *next;
|
||
GENERIC_LIST *prev = NULL;
|
||
|
||
while (list)
|
||
{
|
||
next = list->next;
|
||
list->next = prev;
|
||
prev = list;
|
||
list = next;
|
||
}
|
||
return prev;
|
||
}
|
||
|
||
/* We read in multiples of 4k, simply because it is a typical pipe size
|
||
on unix systems. */
|
||
#define READ_BUFFER_GROWTH (4 * 4096)
|
||
|
||
/* Convert the Texinfo file coming from the open stream STREAM. Assume the
|
||
source of the stream is named NAME. */
|
||
void
|
||
convert_from_stream (stream, name)
|
||
FILE *stream;
|
||
char *name;
|
||
{
|
||
char *buffer = NULL;
|
||
int buffer_offset = 0, buffer_size = 0;
|
||
|
||
initialize_conversion ();
|
||
|
||
/* Read until the end of the stream. This isn't strictly correct, since
|
||
the texinfo input may end before the stream ends, but it is a quick
|
||
working hueristic. */
|
||
while (!feof (stream))
|
||
{
|
||
int count;
|
||
|
||
if (buffer_offset + (READ_BUFFER_GROWTH + 1) >= buffer_size)
|
||
buffer = (char *)
|
||
xrealloc (buffer, (buffer_size += READ_BUFFER_GROWTH));
|
||
|
||
count = fread (buffer + buffer_offset, 1, READ_BUFFER_GROWTH, stream);
|
||
|
||
if (count < 0)
|
||
{
|
||
perror (name);
|
||
xexit (1);
|
||
}
|
||
|
||
buffer_offset += count;
|
||
if (count == 0)
|
||
break;
|
||
}
|
||
|
||
/* Set the globals to the new file. */
|
||
input_text = buffer;
|
||
input_text_length = buffer_offset;
|
||
input_filename = xstrdup (name);
|
||
node_filename = xstrdup (name);
|
||
input_text_offset = 0;
|
||
line_number = 1;
|
||
|
||
/* Not strictly necessary. This magic prevents read_token () from doing
|
||
extra unnecessary work each time it is called (that is a lot of times).
|
||
The INPUT_TEXT_LENGTH is one past the actual end of the text. */
|
||
input_text[input_text_length] = '\n';
|
||
|
||
convert_from_loaded_file (name);
|
||
}
|
||
|
||
void
|
||
convert_from_file (name)
|
||
char *name;
|
||
{
|
||
int i;
|
||
char *filename = xmalloc (strlen (name) + 50);
|
||
|
||
initialize_conversion ();
|
||
|
||
/* Try to load the file specified by NAME, concatenated with our
|
||
various suffixes. Prefer files like `makeinfo.texi' to
|
||
`makeinfo'. */
|
||
for (i = 0; suffixes[i]; i++)
|
||
{
|
||
strcpy (filename, name);
|
||
strcat (filename, suffixes[i]);
|
||
|
||
if (find_and_load (filename))
|
||
break;
|
||
|
||
if (!suffixes[i][0] && strrchr (filename, '.'))
|
||
{
|
||
fs_error (filename);
|
||
free (filename);
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (!suffixes[i])
|
||
{
|
||
fs_error (name);
|
||
free (filename);
|
||
return;
|
||
}
|
||
|
||
input_filename = filename;
|
||
|
||
convert_from_loaded_file (name);
|
||
}
|
||
|
||
void
|
||
convert_from_loaded_file (name)
|
||
char *name;
|
||
{
|
||
char *real_output_filename = NULL;
|
||
|
||
remember_itext (input_text, 0);
|
||
|
||
input_text_offset = 0;
|
||
|
||
/* Avoid the `\input texinfo' line in HTML output (assuming it starts
|
||
the file). */
|
||
if (looking_at ("\\input"))
|
||
discard_until ("\n");
|
||
|
||
/* Search this file looking for the special string which starts conversion.
|
||
Once found, we may truly begin. */
|
||
while (input_text_offset >= 0)
|
||
{
|
||
input_text_offset =
|
||
search_forward (setfilename_search, input_text_offset);
|
||
|
||
if (input_text_offset == 0
|
||
|| (input_text_offset > 0
|
||
&& input_text[input_text_offset -1] == '\n'))
|
||
break;
|
||
else if (input_text_offset > 0)
|
||
input_text_offset++;
|
||
}
|
||
|
||
if (input_text_offset < 0)
|
||
{
|
||
if (!command_output_filename)
|
||
{
|
||
#if defined (REQUIRE_SETFILENAME)
|
||
error (_("No `%s' found in `%s'"), setfilename_search, name);
|
||
goto finished;
|
||
#else
|
||
command_output_filename = output_name_from_input_name (name);
|
||
#endif /* !REQUIRE_SETFILENAME */
|
||
}
|
||
|
||
{
|
||
int i, end_of_first_line;
|
||
|
||
/* Find the end of the first line in the file. */
|
||
for (i = 0; i < input_text_length - 1; i++)
|
||
if (input_text[i] == '\n')
|
||
break;
|
||
|
||
end_of_first_line = i + 1;
|
||
|
||
for (i = 0; i < end_of_first_line; i++)
|
||
{
|
||
if ((input_text[i] == '\\') &&
|
||
(strncmp (input_text + i + 1, "input", 5) == 0))
|
||
{
|
||
input_text_offset = i;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
else
|
||
input_text_offset += strlen (setfilename_search);
|
||
|
||
if (!command_output_filename)
|
||
{
|
||
get_until ("\n", &output_filename); /* read rest of line */
|
||
if (html)
|
||
{ /* Change any extension to .html. */
|
||
char *html_name, *directory_part, *basename_part, *temp;
|
||
|
||
canon_white (output_filename);
|
||
directory_part = pathname_part (output_filename);
|
||
basename_part = filename_part (output_filename);
|
||
|
||
/* Zap any existing extension. */
|
||
temp = strrchr (basename_part, '.');
|
||
if (temp)
|
||
*temp = 0;
|
||
|
||
/* Construct new filename. */
|
||
html_name = xmalloc (strlen (directory_part)
|
||
+ strlen (basename_part) + 6);
|
||
strcpy (html_name, directory_part);
|
||
strcat (html_name, basename_part);
|
||
strcat (html_name, ".html");
|
||
|
||
/* Replace name from @setfilename with the html name. */
|
||
free (output_filename);
|
||
output_filename = html_name;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (input_text_offset != -1)
|
||
discard_until ("\n");
|
||
else
|
||
input_text_offset = 0;
|
||
|
||
real_output_filename = output_filename = command_output_filename;
|
||
command_output_filename = NULL;
|
||
}
|
||
|
||
canon_white (output_filename);
|
||
|
||
if (real_output_filename && strcmp (real_output_filename, "-") == 0)
|
||
{
|
||
if (macro_expansion_filename
|
||
&& strcmp (macro_expansion_filename, "-") == 0)
|
||
{
|
||
fprintf (stderr, _("%s: Skipping macro expansion to stdout as Info output is going there.\n"),
|
||
progname);
|
||
macro_expansion_output_stream = NULL;
|
||
}
|
||
real_output_filename = xstrdup (real_output_filename);
|
||
output_stream = stdout;
|
||
splitting = 0; /* Cannot split when writing to stdout. */
|
||
}
|
||
else
|
||
{
|
||
if (!real_output_filename)
|
||
real_output_filename = expand_filename (output_filename, name);
|
||
else
|
||
real_output_filename = xstrdup (real_output_filename);
|
||
|
||
output_stream = fopen (real_output_filename, "w");
|
||
}
|
||
|
||
set_current_output_filename (real_output_filename);
|
||
|
||
if (verbose_mode)
|
||
printf (_("Making %s file `%s' from `%s'.\n"),
|
||
no_headers ? "text" : (html ? "HTML" : "info"),
|
||
output_filename, input_filename);
|
||
|
||
if (output_stream == NULL)
|
||
{
|
||
fs_error (real_output_filename);
|
||
goto finished;
|
||
}
|
||
|
||
/* Make the displayable filename from output_filename. Only the base
|
||
portion of the filename need be displayed. */
|
||
if (output_stream != stdout)
|
||
pretty_output_filename = filename_part (output_filename);
|
||
else
|
||
pretty_output_filename = xstrdup ("stdout");
|
||
|
||
/* For this file only, count the number of newlines from the top of
|
||
the file to here. This way, we keep track of line numbers for
|
||
error reporting. Line_number starts at 1, since the user isn't
|
||
zero-based. */
|
||
{
|
||
int temp = 0;
|
||
line_number = 1;
|
||
while (temp != input_text_offset)
|
||
if (input_text[temp++] == '\n')
|
||
line_number++;
|
||
}
|
||
|
||
/* html fixxme: should output this as trailer on first page. */
|
||
if (!no_headers && !html)
|
||
add_word_args (_("This is %s, produced by makeinfo version %s from %s.\n"),
|
||
output_filename, VERSION, input_filename);
|
||
|
||
close_paragraph ();
|
||
reader_loop ();
|
||
|
||
finished:
|
||
discard_insertions (0);
|
||
close_paragraph ();
|
||
flush_file_stack ();
|
||
|
||
if (macro_expansion_output_stream)
|
||
{
|
||
fclose (macro_expansion_output_stream);
|
||
if (errors_printed && !force
|
||
&& strcmp (macro_expansion_filename, "-") != 0
|
||
&& FILENAME_CMP (macro_expansion_filename, NULL_DEVICE) != 0
|
||
&& FILENAME_CMP (macro_expansion_filename, ALSO_NULL_DEVICE) != 0)
|
||
{
|
||
fprintf (stderr, _("%s: Removing macro output file `%s' due to errors; use --force to preserve.\n"),
|
||
progname, macro_expansion_filename);
|
||
if (unlink (macro_expansion_filename) < 0)
|
||
perror (macro_expansion_filename);
|
||
}
|
||
}
|
||
|
||
if (output_stream)
|
||
{
|
||
output_pending_notes ();
|
||
if (tag_table)
|
||
{
|
||
tag_table = (TAG_ENTRY *) reverse_list (tag_table);
|
||
if (!no_headers && !html)
|
||
write_tag_table ();
|
||
}
|
||
|
||
if (html)
|
||
{
|
||
start_paragraph ();
|
||
add_word ("</body></html>\n");
|
||
close_paragraph ();
|
||
}
|
||
|
||
if (output_stream != stdout)
|
||
fclose (output_stream);
|
||
|
||
/* If validating, then validate the entire file right now. */
|
||
if (validating)
|
||
validate_file (tag_table);
|
||
|
||
/* If we need to output the table of contents, do it now. */
|
||
if (contents_filename || shortcontents_filename)
|
||
toc_update ();
|
||
|
||
if (splitting && !html && (!errors_printed || force))
|
||
split_file (real_output_filename, 0);
|
||
else if (errors_printed
|
||
&& !force
|
||
&& strcmp (real_output_filename, "-") != 0
|
||
&& FILENAME_CMP (real_output_filename, NULL_DEVICE) != 0
|
||
&& FILENAME_CMP (real_output_filename, ALSO_NULL_DEVICE) != 0)
|
||
{ /* If there were errors, and no --force, remove the output. */
|
||
fprintf (stderr, _("%s: Removing output file `%s' due to errors; use --force to preserve.\n"),
|
||
progname, real_output_filename);
|
||
if (unlink (real_output_filename) < 0)
|
||
perror (real_output_filename);
|
||
}
|
||
}
|
||
free (real_output_filename);
|
||
}
|
||
|
||
void
|
||
free_and_clear (pointer)
|
||
char **pointer;
|
||
{
|
||
if (*pointer)
|
||
{
|
||
free (*pointer);
|
||
*pointer = NULL;
|
||
}
|
||
}
|
||
|
||
/* Initialize some state. */
|
||
void
|
||
init_internals ()
|
||
{
|
||
free_and_clear (&output_filename);
|
||
free_and_clear (&command);
|
||
free_and_clear (&input_filename);
|
||
free_node_references ();
|
||
free_node_node_references ();
|
||
toc_free ();
|
||
init_insertion_stack ();
|
||
init_brace_stack ();
|
||
current_node = NULL; /* sometimes already freed */
|
||
command_index = 0;
|
||
in_menu = 0;
|
||
in_detailmenu = 0;
|
||
top_node_seen = 0;
|
||
non_top_node_seen = 0;
|
||
node_number = -1;
|
||
}
|
||
|
||
void
|
||
init_paragraph ()
|
||
{
|
||
free_and_clear (&output_paragraph);
|
||
output_paragraph = xmalloc (paragraph_buffer_len);
|
||
output_paragraph[0] = 0;
|
||
output_paragraph_offset = 0;
|
||
output_column = 0;
|
||
paragraph_is_open = 0;
|
||
current_indent = 0;
|
||
meta_char_pos = 0;
|
||
}
|
||
|
||
/* This is called from `reader_loop' when we are at the * beginning a
|
||
menu line. */
|
||
|
||
static void
|
||
handle_menu_entry ()
|
||
{
|
||
char *tem;
|
||
|
||
/* Ugh, glean_node_from_menu wants to read the * itself. */
|
||
input_text_offset--;
|
||
|
||
/* Find node name in menu entry and save it in references list for
|
||
later validation. Use followed_reference type for detailmenu
|
||
references since we don't want to use them for default node pointers. */
|
||
tem = glean_node_from_menu (1, in_detailmenu
|
||
? followed_reference : menu_reference);
|
||
|
||
if (html && tem)
|
||
{ /* Start a menu item with the cleaned-up line. Put an anchor
|
||
around the start text (before `:' or the node name). */
|
||
char *string;
|
||
|
||
discard_until ("* ");
|
||
|
||
/* The line number was already incremented in reader_loop when we
|
||
saw the newline, and discard_until has now incremented again. */
|
||
line_number--;
|
||
|
||
if (had_menu_commentary)
|
||
{
|
||
add_word ("<ul>\n");
|
||
had_menu_commentary = 0;
|
||
in_paragraph = 0;
|
||
}
|
||
else if (!in_paragraph && !paragraph_is_open)
|
||
{
|
||
add_word ("<p>\n");
|
||
in_paragraph = 1;
|
||
}
|
||
|
||
if (in_paragraph)
|
||
{
|
||
add_word ("</p>");
|
||
in_paragraph = 0;
|
||
}
|
||
|
||
add_word ("<li><a href=\"");
|
||
string = expansion (tem, 0);
|
||
add_anchor_name (string, 1);
|
||
add_word ("\">");
|
||
free (string);
|
||
|
||
/* The menu item may use macros, so expand them now. */
|
||
only_macro_expansion++;
|
||
get_until_in_line (1, ":", &string);
|
||
only_macro_expansion--;
|
||
execute_string ("%s", string); /* get escaping done */
|
||
free (string);
|
||
|
||
add_word ("</a>");
|
||
|
||
if (looking_at ("::"))
|
||
discard_until (":");
|
||
else
|
||
{ /* discard the node name */
|
||
get_until_in_line (0, ".", &string);
|
||
free (string);
|
||
}
|
||
input_text_offset++; /* discard the second colon or the period */
|
||
add_word (": ");
|
||
}
|
||
else if (tem)
|
||
{ /* For Info output, we can just use the input and the main case in
|
||
reader_loop where we output what comes in. Just move off the *
|
||
so the next time through reader_loop we don't end up back here. */
|
||
add_char ('*');
|
||
input_text_offset += 2; /* undo the pointer back-up above. */
|
||
}
|
||
|
||
if (tem)
|
||
free (tem);
|
||
}
|
||
|
||
/* Find the command corresponding to STRING. If the command is found,
|
||
return a pointer to the data structure. Otherwise return -1. */
|
||
static COMMAND *
|
||
get_command_entry (string)
|
||
char *string;
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; command_table[i].name; i++)
|
||
if (strcmp (command_table[i].name, string) == 0)
|
||
return &command_table[i];
|
||
|
||
/* This command is not in our predefined command table. Perhaps
|
||
it is a user defined command. */
|
||
for (i = 0; i < user_command_array_len; i++)
|
||
if (user_command_array[i] &&
|
||
(strcmp (user_command_array[i]->name, string) == 0))
|
||
return user_command_array[i];
|
||
|
||
/* We never heard of this command. */
|
||
return (COMMAND *) -1;
|
||
}
|
||
|
||
/* input_text_offset is right at the command prefix character.
|
||
Read the next token to determine what to do. Return zero
|
||
if there's no known command or macro after the prefix character. */
|
||
static int
|
||
read_command ()
|
||
{
|
||
COMMAND *entry;
|
||
int old_text_offset = input_text_offset++;
|
||
|
||
free_and_clear (&command);
|
||
command = read_token ();
|
||
|
||
/* Check to see if this command is a macro. If so, execute it here. */
|
||
{
|
||
MACRO_DEF *def;
|
||
|
||
def = find_macro (command);
|
||
|
||
if (def)
|
||
{
|
||
/* We disallow recursive use of a macro call. Inhibit the expansion
|
||
of this macro during the life of its execution. */
|
||
if (!(def->flags & ME_RECURSE))
|
||
def->inhibited = 1;
|
||
|
||
execute_macro (def);
|
||
|
||
if (!(def->flags & ME_RECURSE))
|
||
def->inhibited = 0;
|
||
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
if (only_macro_expansion)
|
||
{
|
||
/* Back up to the place where we were called, so the
|
||
caller will have a chance to process this non-macro. */
|
||
input_text_offset = old_text_offset;
|
||
return 0;
|
||
}
|
||
|
||
/* Perform alias expansion */
|
||
command = alias_expand (command);
|
||
|
||
if (enclosure_command (command))
|
||
{
|
||
remember_brace (enclosure_expand);
|
||
enclosure_expand (START, output_paragraph_offset, 0);
|
||
return 0;
|
||
}
|
||
|
||
entry = get_command_entry (command);
|
||
if (entry == (COMMAND *)-1)
|
||
{
|
||
line_error (_("Unknown command `%s'"), command);
|
||
return 0;
|
||
}
|
||
|
||
if (entry->argument_in_braces == BRACE_ARGS)
|
||
remember_brace (entry->proc);
|
||
else if (entry->argument_in_braces == MAYBE_BRACE_ARGS)
|
||
{
|
||
if (curchar () == '{')
|
||
remember_brace (entry->proc);
|
||
else
|
||
{ /* No braces, so arg is next char. */
|
||
int ch;
|
||
int saved_offset = output_paragraph_offset;
|
||
(*(entry->proc)) (START, output_paragraph_offset, 0);
|
||
|
||
/* Possibilities left for the next character: @ (error), }
|
||
(error), whitespace (skip) anything else (normal char). */
|
||
skip_whitespace ();
|
||
ch = curchar ();
|
||
if (ch == '@')
|
||
{
|
||
line_error (_("Use braces to give a command as an argument to @%s"),
|
||
entry->name);
|
||
return 0;
|
||
}
|
||
else if (ch == '}')
|
||
{
|
||
/* Our caller will give the error message, because this }
|
||
won't match anything. */
|
||
return 0;
|
||
}
|
||
|
||
add_char (ch);
|
||
input_text_offset++;
|
||
(*(entry->proc)) (END, saved_offset, output_paragraph_offset);
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
/* Get here if we have BRACE_ARGS, NO_BRACE_ARGS, or MAYBE_BRACE_ARGS
|
||
with braces. */
|
||
(*(entry->proc)) (START, output_paragraph_offset, 0);
|
||
return 1;
|
||
}
|
||
|
||
/* Okay, we are ready to start the conversion. Call the reader on
|
||
some text, and fill the text as it is output. Handle commands by
|
||
remembering things like open braces and the current file position on a
|
||
stack, and when the corresponding close brace is found, you can call
|
||
the function with the proper arguments. Although the filling isn't
|
||
necessary for HTML, it should do no harm. */
|
||
void
|
||
reader_loop ()
|
||
{
|
||
int character;
|
||
int done = 0;
|
||
int dash_count = 0;
|
||
|
||
while (!done)
|
||
{
|
||
if (input_text_offset >= input_text_length)
|
||
break;
|
||
|
||
character = curchar ();
|
||
|
||
/* If only_macro_expansion, only handle macros and leave
|
||
everything else intact. */
|
||
if (!only_macro_expansion && !in_fixed_width_font
|
||
&& (character == '\'' || character == '`')
|
||
&& input_text[input_text_offset + 1] == character)
|
||
{
|
||
input_text_offset++;
|
||
character = '"'; /* html fixxme */
|
||
}
|
||
|
||
/* Convert --- to --. */
|
||
if (!only_macro_expansion && character == '-')
|
||
{
|
||
dash_count++;
|
||
if (dash_count == 2 && !in_fixed_width_font)
|
||
{
|
||
input_text_offset++;
|
||
continue;
|
||
}
|
||
}
|
||
else if (dash_count > 0)
|
||
dash_count = 0;
|
||
|
||
/* If this is a whitespace character, then check to see if the line
|
||
is blank. If so, advance to the carriage return. */
|
||
if (!only_macro_expansion && whitespace (character))
|
||
{
|
||
int i = input_text_offset + 1;
|
||
|
||
while (i < input_text_length && whitespace (input_text[i]))
|
||
i++;
|
||
|
||
if (i == input_text_length || input_text[i] == '\n')
|
||
{
|
||
if (i == input_text_length)
|
||
i--;
|
||
|
||
input_text_offset = i;
|
||
character = curchar ();
|
||
}
|
||
}
|
||
|
||
if (character == '\n')
|
||
line_number++;
|
||
|
||
switch (character)
|
||
{
|
||
case '*': /* perhaps we are at a menu */
|
||
/* We used to check for this in the \n case but an @c in a
|
||
menu swallows its newline, so check here instead. */
|
||
if (!only_macro_expansion && in_menu
|
||
&& input_text_offset + 1 < input_text_length
|
||
&& input_text[input_text_offset-1] == '\n')
|
||
handle_menu_entry ();
|
||
else
|
||
{ /* Duplicate code from below, but not worth twisting the
|
||
fallthroughs to get down there. */
|
||
add_char (character);
|
||
input_text_offset++;
|
||
}
|
||
break;
|
||
|
||
/* Escapes for HTML unless we're outputting raw HTML. Do
|
||
this always, even if SGML rules don't require it since
|
||
that's easier and safer for non-conforming browsers. */
|
||
case '&':
|
||
if (html && escape_html)
|
||
add_word ("&");
|
||
else
|
||
add_char (character);
|
||
input_text_offset++;
|
||
break;
|
||
|
||
case '<':
|
||
if (html && escape_html)
|
||
add_word ("<");
|
||
else
|
||
add_char (character);
|
||
input_text_offset++;
|
||
break;
|
||
|
||
case '>':
|
||
if (html && escape_html)
|
||
add_word (">");
|
||
else
|
||
add_char (character);
|
||
input_text_offset++;
|
||
break;
|
||
|
||
case COMMAND_PREFIX: /* @ */
|
||
if (read_command () || !only_macro_expansion)
|
||
break;
|
||
|
||
/* FALLTHROUGH (usually) */
|
||
case '{':
|
||
/* Special case. We're not supposed to see this character by itself.
|
||
If we do, it means there is a syntax error in the input text.
|
||
Report the error here, but remember this brace on the stack so
|
||
we can ignore its partner. */
|
||
if (!only_macro_expansion)
|
||
{
|
||
line_error (_("Misplaced %c"), '{');
|
||
remember_brace (misplaced_brace);
|
||
/* remember_brace advances input_text_offset. */
|
||
break;
|
||
}
|
||
|
||
/* FALLTHROUGH (usually) */
|
||
case '}':
|
||
if (!only_macro_expansion)
|
||
{
|
||
pop_and_call_brace ();
|
||
input_text_offset++;
|
||
break;
|
||
}
|
||
|
||
/* FALLTHROUGH (usually) */
|
||
default:
|
||
add_char (character);
|
||
input_text_offset++;
|
||
}
|
||
}
|
||
if (macro_expansion_output_stream && !only_macro_expansion)
|
||
maybe_write_itext (input_text, input_text_offset);
|
||
}
|
||
|
||
void
|
||
init_brace_stack ()
|
||
{
|
||
brace_stack = NULL;
|
||
}
|
||
|
||
void
|
||
remember_brace (proc)
|
||
COMMAND_FUNCTION *proc;
|
||
{
|
||
if (curchar () != '{')
|
||
line_error (_("%c%s expected `{...}'"), COMMAND_PREFIX, command);
|
||
else
|
||
input_text_offset++;
|
||
remember_brace_1 (proc, output_paragraph_offset);
|
||
}
|
||
|
||
/* Remember the current output position here. Save PROC
|
||
along with it so you can call it later. */
|
||
void
|
||
remember_brace_1 (proc, position)
|
||
COMMAND_FUNCTION *proc;
|
||
int position;
|
||
{
|
||
BRACE_ELEMENT *new = xmalloc (sizeof (BRACE_ELEMENT));
|
||
new->next = brace_stack;
|
||
new->proc = proc;
|
||
new->command = xstrdup (command);
|
||
new->pos = position;
|
||
new->line = line_number;
|
||
new->in_fixed_width_font = in_fixed_width_font;
|
||
brace_stack = new;
|
||
}
|
||
|
||
/* Pop the top of the brace stack, and call the associated function
|
||
with the args END and POS. */
|
||
void
|
||
pop_and_call_brace ()
|
||
{
|
||
if (brace_stack == NULL)
|
||
{
|
||
line_error (_("Unmatched }"));
|
||
return;
|
||
}
|
||
|
||
{
|
||
BRACE_ELEMENT *temp;
|
||
|
||
int pos = brace_stack->pos;
|
||
COMMAND_FUNCTION *proc = brace_stack->proc;
|
||
in_fixed_width_font = brace_stack->in_fixed_width_font;
|
||
|
||
/* Reset current command, so the proc can know who it is. This is
|
||
used in cm_accent. */
|
||
command = brace_stack->command;
|
||
|
||
temp = brace_stack->next;
|
||
free (brace_stack);
|
||
brace_stack = temp;
|
||
|
||
(*proc) (END, pos, output_paragraph_offset);
|
||
}
|
||
}
|
||
|
||
/* Shift all of the markers in `brace_stack' by AMOUNT. */
|
||
void
|
||
adjust_braces_following (here, amount)
|
||
int here, amount;
|
||
{
|
||
BRACE_ELEMENT *stack = brace_stack;
|
||
|
||
while (stack)
|
||
{
|
||
if (stack->pos >= here)
|
||
stack->pos += amount;
|
||
stack = stack->next;
|
||
}
|
||
}
|
||
|
||
/* Return the string which invokes PROC; a pointer to a function.
|
||
Always returns the first function in the command table if more than
|
||
one matches PROC. */
|
||
static char *
|
||
find_proc_name (proc)
|
||
COMMAND_FUNCTION *proc;
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; command_table[i].name; i++)
|
||
if (proc == command_table[i].proc)
|
||
return command_table[i].name;
|
||
return _("NO_NAME!");
|
||
}
|
||
|
||
/* You call discard_braces () when you shouldn't have any braces on the stack.
|
||
I used to think that this happens for commands that don't take arguments
|
||
in braces, but that was wrong because of things like @code{foo @@}. So now
|
||
I only detect it at the beginning of nodes. */
|
||
void
|
||
discard_braces ()
|
||
{
|
||
if (!brace_stack)
|
||
return;
|
||
|
||
while (brace_stack)
|
||
{
|
||
if (brace_stack->proc != misplaced_brace)
|
||
{
|
||
char *proc_name;
|
||
int temp_line_number = line_number;
|
||
|
||
line_number = brace_stack->line;
|
||
proc_name = find_proc_name (brace_stack->proc);
|
||
line_error (_("%c%s missing close brace"), COMMAND_PREFIX, proc_name);
|
||
line_number = temp_line_number;
|
||
pop_and_call_brace ();
|
||
}
|
||
else
|
||
{
|
||
BRACE_ELEMENT *temp;
|
||
temp = brace_stack->next;
|
||
free (brace_stack);
|
||
brace_stack = temp;
|
||
}
|
||
}
|
||
}
|
||
|
||
int
|
||
get_char_len (character)
|
||
int character;
|
||
{
|
||
/* Return the printed length of the character. */
|
||
int len;
|
||
|
||
switch (character)
|
||
{
|
||
case '\t':
|
||
len = (output_column + 8) & 0xf7;
|
||
if (len > fill_column)
|
||
len = fill_column - output_column;
|
||
else
|
||
len = len - output_column;
|
||
break;
|
||
|
||
case '\n':
|
||
len = fill_column - output_column;
|
||
break;
|
||
|
||
default:
|
||
/* ASCII control characters appear as two characters in the output
|
||
(e.g., ^A). But characters with the high bit set are just one
|
||
on suitable terminals, so don't count them as two for line
|
||
breaking purposes. */
|
||
if (0 <= character && character < ' ')
|
||
len = 2;
|
||
else
|
||
len = 1;
|
||
}
|
||
return len;
|
||
}
|
||
|
||
void
|
||
#if defined (VA_FPRINTF) && __STDC__
|
||
add_word_args (char *format, ...)
|
||
#else
|
||
add_word_args (format, va_alist)
|
||
char *format;
|
||
va_dcl
|
||
#endif
|
||
{
|
||
char buffer[2000]; /* xx no fixed limits */
|
||
#ifdef VA_FPRINTF
|
||
va_list ap;
|
||
#endif
|
||
|
||
VA_START (ap, format);
|
||
#ifdef VA_SPRINTF
|
||
VA_SPRINTF (buffer, format, ap);
|
||
#else
|
||
sprintf (buffer, format, a1, a2, a3, a4, a5, a6, a7, a8);
|
||
#endif /* not VA_SPRINTF */
|
||
va_end (ap);
|
||
add_word (buffer);
|
||
}
|
||
|
||
/* Add STRING to output_paragraph. */
|
||
void
|
||
add_word (string)
|
||
char *string;
|
||
{
|
||
while (*string)
|
||
add_char (*string++);
|
||
}
|
||
|
||
/* Add the character to the current paragraph. If filling_enabled is
|
||
nonzero, then do filling as well. */
|
||
void
|
||
add_char (character)
|
||
int character;
|
||
{
|
||
/* If we are avoiding outputting headers, and we are currently
|
||
in a menu, then simply return. But if we're only expanding macros,
|
||
then we're being called from glean_node_from_menu to try to
|
||
remember a menu reference, and we need that so we can do defaulting. */
|
||
if (no_headers && !only_macro_expansion && (in_menu || in_detailmenu))
|
||
return;
|
||
|
||
/* If we are adding a character now, then we don't have to
|
||
ignore close_paragraph () calls any more. */
|
||
if (must_start_paragraph && character != '\n')
|
||
{
|
||
must_start_paragraph = 0;
|
||
line_already_broken = 0; /* The line is no longer broken. */
|
||
if (current_indent > output_column)
|
||
{
|
||
indent (current_indent - output_column);
|
||
output_column = current_indent;
|
||
}
|
||
}
|
||
|
||
if (non_splitting_words && strchr (" \t\n", character))
|
||
{
|
||
if (html)
|
||
{ /* Seems cleaner to use than an 8-bit char. */
|
||
add_word (" ");
|
||
character = ';';
|
||
}
|
||
else
|
||
character = META (' '); /* unmeta-d in flush_output */
|
||
}
|
||
|
||
insertion_paragraph_closed = 0;
|
||
|
||
switch (character)
|
||
{
|
||
case '\n':
|
||
if (!filling_enabled && ! (html && (in_menu || in_detailmenu)))
|
||
{
|
||
insert ('\n');
|
||
|
||
if (force_flush_right)
|
||
{
|
||
close_paragraph ();
|
||
/* Hack to force single blank lines out in this mode. */
|
||
flush_output ();
|
||
}
|
||
|
||
output_column = 0;
|
||
|
||
if (!no_indent && paragraph_is_open)
|
||
indent (output_column = current_indent);
|
||
break;
|
||
}
|
||
else if (end_of_sentence_p ())
|
||
/* CHARACTER is newline, and filling is enabled. */
|
||
{
|
||
insert (' ');
|
||
output_column++;
|
||
last_inserted_character = character;
|
||
}
|
||
|
||
if (last_char_was_newline)
|
||
{
|
||
if (html)
|
||
last_char_was_newline++;
|
||
close_paragraph ();
|
||
pending_indent = 0;
|
||
}
|
||
else
|
||
{
|
||
last_char_was_newline = 1;
|
||
if (html)
|
||
insert ('\n');
|
||
else
|
||
insert (' ');
|
||
output_column++;
|
||
}
|
||
break;
|
||
|
||
default: /* not at newline */
|
||
{
|
||
int len = get_char_len (character);
|
||
int suppress_insert = 0;
|
||
|
||
if ((character == ' ') && (last_char_was_newline))
|
||
{
|
||
if (!paragraph_is_open)
|
||
{
|
||
pending_indent++;
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (!paragraph_is_open)
|
||
{
|
||
start_paragraph ();
|
||
/* If the paragraph is supposed to be indented a certain
|
||
way, then discard all of the pending whitespace.
|
||
Otherwise, we let the whitespace stay. */
|
||
if (!paragraph_start_indent)
|
||
indent (pending_indent);
|
||
pending_indent = 0;
|
||
|
||
/* This horrible kludge of checking for a < prevents <p>
|
||
from being inserted when we already have html markup
|
||
starting a paragraph, as with <ul> and <h1> and the like. */
|
||
if (html && escape_html && character != '<'
|
||
&& (!in_fixed_width_font || in_menu || in_detailmenu))
|
||
{
|
||
insert_string ("<p>");
|
||
in_paragraph = 1;
|
||
adjust_braces_following (0, 3); /* adjust for <p> */
|
||
}
|
||
}
|
||
|
||
output_column += len;
|
||
if (output_column > fill_column)
|
||
{
|
||
if (filling_enabled && !html)
|
||
{
|
||
int temp = output_paragraph_offset;
|
||
while (--temp > 0 && output_paragraph[temp] != '\n')
|
||
{
|
||
/* If we have found a space, we have the place to break
|
||
the line. */
|
||
if (output_paragraph[temp] == ' ')
|
||
{
|
||
/* Remove trailing whitespace from output. */
|
||
while (temp && whitespace (output_paragraph[temp - 1]))
|
||
temp--;
|
||
|
||
/* If we went back all the way to the newline of the
|
||
preceding line, it probably means that the word we
|
||
are adding is itself wider than the space that the
|
||
indentation and the fill_column let us use. In
|
||
that case, do NOT insert another newline, since it
|
||
won't help. Just indent to current_indent and
|
||
leave it alone, since that's the most we can do. */
|
||
if (temp && output_paragraph[temp - 1] != '\n')
|
||
output_paragraph[temp++] = '\n';
|
||
|
||
/* We have correctly broken the line where we want
|
||
to. What we don't want is spaces following where
|
||
we have decided to break the line. We get rid of
|
||
them. */
|
||
{
|
||
int t1 = temp;
|
||
|
||
for (;; t1++)
|
||
{
|
||
if (t1 == output_paragraph_offset)
|
||
{
|
||
if (whitespace (character))
|
||
suppress_insert = 1;
|
||
break;
|
||
}
|
||
if (!whitespace (output_paragraph[t1]))
|
||
break;
|
||
}
|
||
|
||
if (t1 != temp)
|
||
{
|
||
adjust_braces_following (temp, (- (t1 - temp)));
|
||
strncpy ((char *) &output_paragraph[temp],
|
||
(char *) &output_paragraph[t1],
|
||
(output_paragraph_offset - t1));
|
||
output_paragraph_offset -= (t1 - temp);
|
||
}
|
||
}
|
||
|
||
/* Filled, but now indent if that is right. */
|
||
if (indented_fill && current_indent > 0)
|
||
{
|
||
int buffer_len = ((output_paragraph_offset - temp)
|
||
+ current_indent);
|
||
char *temp_buffer = xmalloc (buffer_len);
|
||
int indentation = 0;
|
||
|
||
/* We have to shift any markers that are in
|
||
front of the wrap point. */
|
||
adjust_braces_following (temp, current_indent);
|
||
|
||
while (current_indent > 0 &&
|
||
indentation != current_indent)
|
||
temp_buffer[indentation++] = ' ';
|
||
|
||
memcpy ((char *) &temp_buffer[current_indent],
|
||
(char *) &output_paragraph[temp],
|
||
buffer_len - current_indent);
|
||
|
||
if (output_paragraph_offset + buffer_len
|
||
>= paragraph_buffer_len)
|
||
{
|
||
unsigned char *tt = xrealloc
|
||
(output_paragraph,
|
||
(paragraph_buffer_len += buffer_len));
|
||
output_paragraph = tt;
|
||
}
|
||
memcpy ((char *) &output_paragraph[temp],
|
||
temp_buffer, buffer_len);
|
||
output_paragraph_offset += current_indent;
|
||
free (temp_buffer);
|
||
}
|
||
output_column = 0;
|
||
while (temp < output_paragraph_offset)
|
||
output_column +=
|
||
get_char_len (output_paragraph[temp++]);
|
||
output_column += len;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!suppress_insert)
|
||
{
|
||
insert (character);
|
||
last_inserted_character = character;
|
||
}
|
||
last_char_was_newline = 0;
|
||
line_already_broken = 0;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Add a character and store its position in meta_char_pos. */
|
||
void
|
||
add_meta_char (character)
|
||
int character;
|
||
{
|
||
meta_char_pos = output_paragraph_offset;
|
||
add_char (character);
|
||
}
|
||
|
||
/* Insert CHARACTER into `output_paragraph'. */
|
||
void
|
||
insert (character)
|
||
int character;
|
||
{
|
||
/* This is sad, but it seems desirable to not force any particular
|
||
order on the front matter commands. This way, the document can do
|
||
@settitle, @documentlanguage, etc, in any order and with any
|
||
omissions, and we'll still output the html <head> `just in time'. */
|
||
if (!executing_string && html && !html_output_head_p)
|
||
html_output_head ();
|
||
|
||
output_paragraph[output_paragraph_offset++] = character;
|
||
if (output_paragraph_offset == paragraph_buffer_len)
|
||
{
|
||
output_paragraph =
|
||
xrealloc (output_paragraph, (paragraph_buffer_len += 100));
|
||
}
|
||
}
|
||
|
||
/* Insert the null-terminated string STRING into `output_paragraph'. */
|
||
void
|
||
insert_string (string)
|
||
char *string;
|
||
{
|
||
while (*string)
|
||
insert (*string++);
|
||
}
|
||
|
||
|
||
/* Sentences might have these characters after the period (or whatever). */
|
||
#define POST_SENTENCE(c) ((c) == ')' || (c) == '\'' || (c) == '"' \
|
||
|| (c) == ']')
|
||
|
||
/* Return true if at an end-of-sentence character, possibly followed by
|
||
post-sentence punctuation to ignore. */
|
||
static int
|
||
end_of_sentence_p ()
|
||
{
|
||
int loc = output_paragraph_offset - 1;
|
||
|
||
/* If nothing has been output, don't check output_paragraph[-1]. */
|
||
if (loc < 0)
|
||
return 0;
|
||
|
||
/* A post-sentence character that is at meta_char_pos is not really
|
||
a post-sentence character; it was produced by a markup such as
|
||
@samp. We don't want the period inside @samp to be treated as a
|
||
sentence ender. */
|
||
while (loc > 0
|
||
&& loc != meta_char_pos && POST_SENTENCE (output_paragraph[loc]))
|
||
loc--;
|
||
return loc != meta_char_pos && sentence_ender (output_paragraph[loc]);
|
||
}
|
||
|
||
|
||
/* Remove upto COUNT characters of whitespace from the
|
||
the current output line. If COUNT is less than zero,
|
||
then remove until none left. */
|
||
void
|
||
kill_self_indent (count)
|
||
int count;
|
||
{
|
||
/* Handle infinite case first. */
|
||
if (count < 0)
|
||
{
|
||
output_column = 0;
|
||
while (output_paragraph_offset)
|
||
{
|
||
if (whitespace (output_paragraph[output_paragraph_offset - 1]))
|
||
output_paragraph_offset--;
|
||
else
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
while (output_paragraph_offset && count--)
|
||
if (whitespace (output_paragraph[output_paragraph_offset - 1]))
|
||
output_paragraph_offset--;
|
||
else
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Nonzero means do not honor calls to flush_output (). */
|
||
static int flushing_ignored = 0;
|
||
|
||
/* Prevent calls to flush_output () from having any effect. */
|
||
void
|
||
inhibit_output_flushing ()
|
||
{
|
||
flushing_ignored++;
|
||
}
|
||
|
||
/* Allow calls to flush_output () to write the paragraph data. */
|
||
void
|
||
uninhibit_output_flushing ()
|
||
{
|
||
flushing_ignored--;
|
||
}
|
||
|
||
void
|
||
flush_output ()
|
||
{
|
||
int i;
|
||
|
||
if (!output_paragraph_offset || flushing_ignored)
|
||
return;
|
||
|
||
for (i = 0; i < output_paragraph_offset; i++)
|
||
{
|
||
/* If we turned on the 8th bit for a space inside @w, turn it
|
||
back off for output. This might be problematic, since the
|
||
0x80 character may be used in 8-bit character sets. Sigh.
|
||
In any case, don't do this for HTML, since the nbsp character
|
||
is valid input and must be passed along to the browser. */
|
||
if (!html && (output_paragraph[i] & meta_character_bit))
|
||
{
|
||
int temp = UNMETA (output_paragraph[i]);
|
||
if (temp == ' ')
|
||
output_paragraph[i] &= 0x7f;
|
||
}
|
||
}
|
||
|
||
fwrite (output_paragraph, 1, output_paragraph_offset, output_stream);
|
||
|
||
output_position += output_paragraph_offset;
|
||
output_paragraph_offset = 0;
|
||
meta_char_pos = 0;
|
||
}
|
||
|
||
/* How to close a paragraph controlling the number of lines between
|
||
this one and the last one. */
|
||
|
||
/* Paragraph spacing is controlled by this variable. It is the number of
|
||
blank lines that you wish to appear between paragraphs. A value of
|
||
1 creates a single blank line between paragraphs. */
|
||
int paragraph_spacing = DEFAULT_PARAGRAPH_SPACING;
|
||
|
||
static void
|
||
close_paragraph_with_lines (lines)
|
||
int lines;
|
||
{
|
||
int old_spacing = paragraph_spacing;
|
||
paragraph_spacing = lines;
|
||
close_paragraph ();
|
||
paragraph_spacing = old_spacing;
|
||
}
|
||
|
||
/* Close the current paragraph, leaving no blank lines between them. */
|
||
void
|
||
close_single_paragraph ()
|
||
{
|
||
close_paragraph_with_lines (0);
|
||
}
|
||
|
||
/* Close a paragraph after an insertion has ended. */
|
||
void
|
||
close_insertion_paragraph ()
|
||
{
|
||
if (!insertion_paragraph_closed)
|
||
{
|
||
/* Close the current paragraph, breaking the line. */
|
||
close_single_paragraph ();
|
||
|
||
/* Start a new paragraph, with the correct indentation for the now
|
||
current insertion level (one above the one that we are ending). */
|
||
start_paragraph ();
|
||
|
||
/* Tell `close_paragraph' that the previous line has already been
|
||
broken, so it should insert one less newline. */
|
||
line_already_broken = 1;
|
||
|
||
/* Tell functions such as `add_char' we've already found a newline. */
|
||
ignore_blank_line ();
|
||
}
|
||
else
|
||
{
|
||
/* If the insertion paragraph is closed already, then we are seeing
|
||
two `@end' commands in a row. Note that the first one we saw was
|
||
handled in the first part of this if-then-else clause, and at that
|
||
time `start_paragraph' was called, partially to handle the proper
|
||
indentation of the current line. However, the indentation level
|
||
may have just changed again, so we may have to outdent the current
|
||
line to the new indentation level. */
|
||
if (current_indent < output_column)
|
||
kill_self_indent (output_column - current_indent);
|
||
}
|
||
|
||
insertion_paragraph_closed = 1;
|
||
}
|
||
|
||
/* Close the currently open paragraph. */
|
||
void
|
||
close_paragraph ()
|
||
{
|
||
int i;
|
||
|
||
/* The insertion paragraph is no longer closed. */
|
||
insertion_paragraph_closed = 0;
|
||
|
||
if (paragraph_is_open && !must_start_paragraph)
|
||
{
|
||
int tindex, c;
|
||
|
||
tindex = output_paragraph_offset;
|
||
|
||
/* Back up to last non-newline/space character, forcing all such
|
||
subsequent characters to be newlines. This isn't strictly
|
||
necessary, but a couple of functions use the presence of a newline
|
||
to make decisions. */
|
||
for (tindex = output_paragraph_offset - 1; tindex >= 0; --tindex)
|
||
{
|
||
c = output_paragraph[tindex];
|
||
|
||
if (c == ' '|| c == '\n')
|
||
output_paragraph[tindex] = '\n';
|
||
else
|
||
break;
|
||
}
|
||
|
||
/* All trailing whitespace is ignored. */
|
||
output_paragraph_offset = ++tindex;
|
||
|
||
/* Break the line if that is appropriate. */
|
||
if (paragraph_spacing >= 0)
|
||
insert ('\n');
|
||
|
||
/* Add as many blank lines as is specified in `paragraph_spacing'. */
|
||
if (!force_flush_right)
|
||
{
|
||
for (i = 0; i < (paragraph_spacing - line_already_broken); i++)
|
||
{
|
||
insert ('\n');
|
||
/* Don't need anything extra for HTML in usual case of no
|
||
extra paragraph spacing. */
|
||
if (html && i > 0)
|
||
insert_string ("<br>");
|
||
}
|
||
}
|
||
|
||
/* If we are doing flush right indentation, then do it now
|
||
on the paragraph (really a single line). */
|
||
if (force_flush_right)
|
||
do_flush_right_indentation ();
|
||
|
||
flush_output ();
|
||
paragraph_is_open = 0;
|
||
no_indent = 0;
|
||
output_column = 0;
|
||
}
|
||
|
||
ignore_blank_line ();
|
||
}
|
||
|
||
/* Make the last line just read look as if it were only a newline. */
|
||
void
|
||
ignore_blank_line ()
|
||
{
|
||
last_inserted_character = '\n';
|
||
last_char_was_newline = 1;
|
||
}
|
||
|
||
/* Align the end of the text in output_paragraph with fill_column. */
|
||
void
|
||
do_flush_right_indentation ()
|
||
{
|
||
char *temp;
|
||
int temp_len;
|
||
|
||
kill_self_indent (-1);
|
||
|
||
if (output_paragraph[0] != '\n')
|
||
{
|
||
output_paragraph[output_paragraph_offset] = 0;
|
||
|
||
if (output_paragraph_offset < fill_column)
|
||
{
|
||
int i;
|
||
|
||
if (fill_column >= paragraph_buffer_len)
|
||
output_paragraph =
|
||
xrealloc (output_paragraph,
|
||
(paragraph_buffer_len += fill_column));
|
||
|
||
temp_len = strlen ((char *)output_paragraph);
|
||
temp = xmalloc (temp_len + 1);
|
||
memcpy (temp, (char *)output_paragraph, temp_len);
|
||
|
||
for (i = 0; i < fill_column - output_paragraph_offset; i++)
|
||
output_paragraph[i] = ' ';
|
||
|
||
memcpy ((char *)output_paragraph + i, temp, temp_len);
|
||
free (temp);
|
||
output_paragraph_offset = fill_column;
|
||
adjust_braces_following (0, i);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Begin a new paragraph. */
|
||
void
|
||
start_paragraph ()
|
||
{
|
||
/* First close existing one. */
|
||
if (paragraph_is_open)
|
||
close_paragraph ();
|
||
|
||
/* In either case, the insertion paragraph is no longer closed. */
|
||
insertion_paragraph_closed = 0;
|
||
|
||
/* However, the paragraph is open! */
|
||
paragraph_is_open = 1;
|
||
|
||
/* If we MUST_START_PARAGRAPH, that simply means that start_paragraph ()
|
||
had to be called before we would allow any other paragraph operations
|
||
to have an effect. */
|
||
if (!must_start_paragraph)
|
||
{
|
||
int amount_to_indent = 0;
|
||
|
||
/* If doing indentation, then insert the appropriate amount. */
|
||
if (!no_indent)
|
||
{
|
||
if (inhibit_paragraph_indentation)
|
||
{
|
||
amount_to_indent = current_indent;
|
||
if (inhibit_paragraph_indentation < 0)
|
||
inhibit_paragraph_indentation++;
|
||
}
|
||
else if (paragraph_start_indent < 0)
|
||
amount_to_indent = current_indent;
|
||
else
|
||
amount_to_indent = current_indent + paragraph_start_indent;
|
||
|
||
if (amount_to_indent >= output_column)
|
||
{
|
||
amount_to_indent -= output_column;
|
||
indent (amount_to_indent);
|
||
output_column += amount_to_indent;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
must_start_paragraph = 0;
|
||
}
|
||
|
||
/* Insert the indentation specified by AMOUNT. */
|
||
void
|
||
indent (amount)
|
||
int amount;
|
||
{
|
||
if (html)
|
||
return;
|
||
|
||
/* For every START_POS saved within the brace stack which will be affected
|
||
by this indentation, bump that start pos forward. */
|
||
adjust_braces_following (output_paragraph_offset, amount);
|
||
|
||
while (--amount >= 0)
|
||
insert (' ');
|
||
}
|
||
|
||
/* Search forward for STRING in input_text.
|
||
FROM says where where to start. */
|
||
int
|
||
search_forward (string, from)
|
||
char *string;
|
||
int from;
|
||
{
|
||
int len = strlen (string);
|
||
|
||
while (from < input_text_length)
|
||
{
|
||
if (strncmp (input_text + from, string, len) == 0)
|
||
return from;
|
||
from++;
|
||
}
|
||
return -1;
|
||
}
|
||
|
||
/* Cross references. */
|
||
|
||
/* Return next comma-delimited argument, but do not cross a close-brace
|
||
boundary. Clean up whitespace, too. If EXPAND is nonzero, replace
|
||
the entire brace-delimited argument list with its expansion before
|
||
looking for the next comma. */
|
||
char *
|
||
get_xref_token (expand)
|
||
int expand;
|
||
{
|
||
char *string;
|
||
|
||
if (expand)
|
||
{
|
||
int old_offset = input_text_offset;
|
||
int old_lineno = line_number;
|
||
|
||
get_until_in_braces ("}", &string);
|
||
if (curchar () == '}') /* as opposed to end of text */
|
||
input_text_offset++;
|
||
if (input_text_offset > old_offset)
|
||
{
|
||
int limit = input_text_offset;
|
||
|
||
input_text_offset = old_offset;
|
||
line_number = old_lineno;
|
||
only_macro_expansion++;
|
||
replace_with_expansion (input_text_offset, &limit);
|
||
only_macro_expansion--;
|
||
}
|
||
free (string);
|
||
}
|
||
|
||
get_until_in_braces (",", &string);
|
||
if (curchar () == ',')
|
||
input_text_offset++;
|
||
fix_whitespace (string);
|
||
return string;
|
||
}
|
||
|
||
/* NOTE: If you wonder why the HTML output is produced with such a
|
||
peculiar mix of calls to add_word and execute_string, here's the
|
||
reason. get_xref_token (1) expands all macros in a reference, but
|
||
any other commands, like @value, @@, etc., are left intact. To
|
||
expand them, we need to run the arguments through execute_string.
|
||
However, characters like <, &, > and others cannot be let into
|
||
execute_string, because they will be escaped. See the mess? */
|
||
|
||
/* Make a cross reference. */
|
||
void
|
||
cm_xref (arg)
|
||
{
|
||
if (arg == START)
|
||
{
|
||
char *arg1 = get_xref_token (1); /* expands all macros in xref */
|
||
char *arg2 = get_xref_token (0);
|
||
char *arg3 = get_xref_token (0);
|
||
char *arg4 = get_xref_token (0);
|
||
char *arg5 = get_xref_token (0);
|
||
char *tem;
|
||
|
||
if (html)
|
||
{
|
||
if (!ref_flag)
|
||
add_word_args ("%s", px_ref_flag ? _("see ") : _("See "));
|
||
}
|
||
else
|
||
add_word_args ("%s", px_ref_flag ? "*note " : "*Note ");
|
||
|
||
if (*arg5 || *arg4)
|
||
{
|
||
char *node_name;
|
||
|
||
if (!*arg2)
|
||
{
|
||
if (*arg3)
|
||
node_name = arg3;
|
||
else
|
||
node_name = arg1;
|
||
}
|
||
else
|
||
node_name = arg2;
|
||
|
||
if (html)
|
||
{
|
||
/* html fixxme: revisit this; external node name not
|
||
much use to us with numbered nodes. */
|
||
add_word ("<a href=");
|
||
execute_string ("\"%s.html#", arg4);
|
||
/* Do not collapse -- to -, etc., in references. */
|
||
in_fixed_width_font++;
|
||
tem = expansion (node_name, 0);
|
||
in_fixed_width_font--;
|
||
add_escaped_anchor_name (tem);
|
||
free (tem);
|
||
add_word ("\">");
|
||
execute_string ("%s", arg1);
|
||
add_word ("</a>");
|
||
}
|
||
else
|
||
{
|
||
execute_string ("%s:", node_name);
|
||
in_fixed_width_font++;
|
||
execute_string (" (%s)%s%s", arg4, arg1, px_ref_flag ? "." : "");
|
||
in_fixed_width_font--;
|
||
}
|
||
|
||
/* Free all of the arguments found. */
|
||
if (arg1) free (arg1);
|
||
if (arg2) free (arg2);
|
||
if (arg3) free (arg3);
|
||
if (arg4) free (arg4);
|
||
if (arg5) free (arg5);
|
||
return;
|
||
}
|
||
else
|
||
remember_node_reference (arg1, line_number, followed_reference);
|
||
|
||
if (*arg3)
|
||
{
|
||
if (html)
|
||
{
|
||
add_word ("<a href=\"");
|
||
in_fixed_width_font++;
|
||
tem = expansion (arg1, 0);
|
||
in_fixed_width_font--;
|
||
add_anchor_name (tem, 1);
|
||
free (tem);
|
||
add_word ("\">");
|
||
execute_string ("%s", *arg2 ? arg2 : arg3);
|
||
add_word ("</a>");
|
||
}
|
||
else
|
||
{
|
||
execute_string ("%s:", *arg2 ? arg2 : arg3);
|
||
in_fixed_width_font++;
|
||
execute_string (" %s%s", arg1, px_ref_flag ? "." : "");
|
||
in_fixed_width_font--;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (html)
|
||
{
|
||
add_word ("<a href=\"");
|
||
in_fixed_width_font++;
|
||
tem = expansion (arg1, 0);
|
||
in_fixed_width_font--;
|
||
add_anchor_name (tem, 1);
|
||
free (tem);
|
||
add_word ("\">");
|
||
execute_string ("%s", *arg2 ? arg2 : arg1);
|
||
add_word ("</a>");
|
||
}
|
||
else
|
||
{
|
||
if (*arg2)
|
||
{
|
||
execute_string ("%s:", arg2);
|
||
in_fixed_width_font++;
|
||
execute_string (" %s%s", arg1, px_ref_flag ? "." : "");
|
||
in_fixed_width_font--;
|
||
}
|
||
else
|
||
{
|
||
in_fixed_width_font++;
|
||
execute_string ("%s::", arg1);
|
||
in_fixed_width_font--;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Free all of the arguments found. */
|
||
if (arg1) free (arg1);
|
||
if (arg2) free (arg2);
|
||
if (arg3) free (arg3);
|
||
if (arg4) free (arg4);
|
||
if (arg5) free (arg5);
|
||
}
|
||
else
|
||
{ /* Check to make sure that the next non-whitespace character is
|
||
valid to follow an xref (so info readers can find the node
|
||
names). `input_text_offset' is pointing at the "}" which ended
|
||
the xref or ref command. */
|
||
int temp;
|
||
|
||
for (temp = input_text_offset + 1; temp < input_text_length; )
|
||
{
|
||
if (cr_or_whitespace (input_text[temp]))
|
||
temp++;
|
||
else
|
||
{
|
||
if (input_text[temp] != '.' && input_text[temp] != ',')
|
||
warning (_("`.' or `,' must follow cross reference, not %c"),
|
||
input_text[temp]);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
cm_pxref (arg)
|
||
int arg;
|
||
{
|
||
if (arg == START)
|
||
{
|
||
px_ref_flag++;
|
||
cm_xref (arg);
|
||
px_ref_flag--;
|
||
}
|
||
/* Note that cm_xref isn't called with arg == END, which disables
|
||
the code near the end of cm_xref that checks for `.' or `,'
|
||
after the cross-reference. This is because @pxref{} generates
|
||
the required character itself, when needed. */
|
||
}
|
||
|
||
void
|
||
cm_ref (arg)
|
||
int arg;
|
||
{
|
||
if (arg == START)
|
||
{
|
||
ref_flag++;
|
||
cm_xref (arg);
|
||
ref_flag--;
|
||
}
|
||
}
|
||
|
||
void
|
||
cm_inforef (arg)
|
||
int arg;
|
||
{
|
||
if (arg == START)
|
||
{
|
||
char *node = get_xref_token (1); /* expands all macros in inforef */
|
||
char *pname = get_xref_token (0);
|
||
char *file = get_xref_token (0);
|
||
|
||
if (html)
|
||
{
|
||
add_word (_("see "));
|
||
/* html fixxme: revisit this */
|
||
add_word ("<a href=");
|
||
execute_string ("\"%s.html\"", file);
|
||
add_word (">");
|
||
execute_string ("%s", pname);
|
||
add_word ("</a>");
|
||
}
|
||
else
|
||
{
|
||
if (*pname)
|
||
execute_string ("*note %s: (%s)%s", pname, file, node);
|
||
else
|
||
execute_string ("*note (%s)%s::", file, node);
|
||
}
|
||
|
||
free (node);
|
||
free (pname);
|
||
free (file);
|
||
}
|
||
}
|
||
|
||
/* A URL reference. */
|
||
void
|
||
cm_uref (arg)
|
||
int arg;
|
||
{
|
||
if (arg == START)
|
||
{
|
||
extern int printing_index;
|
||
char *url = get_xref_token (1); /* expands all macros in uref */
|
||
char *desc = get_xref_token (0);
|
||
char *replacement = get_xref_token (0);
|
||
|
||
if (html)
|
||
{ /* never need to show the url */
|
||
add_word ("<a href=");
|
||
/* don't collapse `--' etc. in the url */
|
||
in_fixed_width_font++;
|
||
execute_string ("\"%s\"", url);
|
||
in_fixed_width_font--;
|
||
add_word (">");
|
||
execute_string ("%s", *replacement ? replacement
|
||
: (*desc ? desc : url));
|
||
add_word ("</a>");
|
||
}
|
||
else if (*replacement) /* do not show the url */
|
||
execute_string ("%s", replacement);
|
||
else if (*desc) /* show both text and url */
|
||
{
|
||
execute_string ("%s ", desc);
|
||
in_fixed_width_font++;
|
||
execute_string ("(%s)", url);
|
||
in_fixed_width_font--;
|
||
}
|
||
else /* no text at all, so have the url to show */
|
||
{
|
||
in_fixed_width_font++;
|
||
execute_string ("%s%s%s",
|
||
printing_index ? "" : "`",
|
||
url,
|
||
printing_index ? "" : "'");
|
||
in_fixed_width_font--;
|
||
}
|
||
if (url)
|
||
free (url);
|
||
if (desc)
|
||
free (desc);
|
||
if (replacement)
|
||
free (replacement);
|
||
}
|
||
}
|
||
|
||
/* An email reference. */
|
||
void
|
||
cm_email (arg)
|
||
int arg;
|
||
{
|
||
if (arg == START)
|
||
{
|
||
char *addr = get_xref_token (1); /* expands all macros in email */
|
||
char *name = get_xref_token (0);
|
||
|
||
if (html)
|
||
{
|
||
add_word ("<a href=");
|
||
/* don't collapse `--' etc. in the address */
|
||
in_fixed_width_font++;
|
||
execute_string ("\"mailto:%s\"", addr);
|
||
in_fixed_width_font--;
|
||
add_word (">");
|
||
execute_string ("%s", *name ? name : addr);
|
||
add_word ("</a>");
|
||
}
|
||
else
|
||
{
|
||
execute_string ("%s%s", name, *name ? " " : "");
|
||
in_fixed_width_font++;
|
||
execute_string ("<%s>", addr);
|
||
in_fixed_width_font--;
|
||
}
|
||
|
||
if (addr)
|
||
free (addr);
|
||
if (name)
|
||
free (name);
|
||
}
|
||
}
|
||
|
||
/* An external image is a reference, kind of. The parsing is (not
|
||
coincidentally) similar, anyway. */
|
||
void
|
||
cm_image (arg)
|
||
int arg;
|
||
{
|
||
char *name_arg, *rest;
|
||
|
||
if (arg == END)
|
||
return;
|
||
|
||
name_arg = get_xref_token (1); /* expands all macros in image */
|
||
/* We don't (yet) care about any other args, but read them so they
|
||
don't end up in the text. */
|
||
rest = get_xref_token (0);
|
||
if (rest)
|
||
free (rest);
|
||
rest = get_xref_token (0);
|
||
if (rest)
|
||
free (rest);
|
||
|
||
if (*name_arg)
|
||
{
|
||
char *fullname = xmalloc (strlen (name_arg) + 4 + 1);
|
||
|
||
if (html)
|
||
{ /* fixxme It would be nice to insert more useful alt text. */
|
||
sprintf (fullname, "%s.png", name_arg);
|
||
if (access (fullname, R_OK) != 0)
|
||
{
|
||
sprintf (fullname, "%s.jpg", name_arg);
|
||
if (access (fullname, R_OK) != 0)
|
||
{
|
||
line_error (_("No .png or .jpg for `%s'"), name_arg);
|
||
return;
|
||
}
|
||
}
|
||
|
||
add_word_args ("<img src=\"%s\" alt=\"%s\">", fullname, fullname);
|
||
}
|
||
else
|
||
{ /* Try to open foo.txt. */
|
||
FILE *image_file;
|
||
strcpy (fullname, name_arg);
|
||
strcat (fullname, ".txt");
|
||
image_file = fopen (fullname, "r");
|
||
if (image_file)
|
||
{
|
||
int ch;
|
||
int save_inhibit_indentation = inhibit_paragraph_indentation;
|
||
int save_filling_enabled = filling_enabled;
|
||
|
||
inhibit_paragraph_indentation = 1;
|
||
filling_enabled = 0;
|
||
last_char_was_newline = 0;
|
||
|
||
/* Maybe we need to remove the final newline if the image
|
||
file is only one line to allow in-line images. On the
|
||
other hand, they could just make the file without a
|
||
final newline. */
|
||
while ((ch = getc (image_file)) != EOF)
|
||
add_char (ch);
|
||
|
||
inhibit_paragraph_indentation = save_inhibit_indentation;
|
||
filling_enabled = save_filling_enabled;
|
||
|
||
if (fclose (image_file) != 0)
|
||
perror (fullname);
|
||
}
|
||
else
|
||
warning (_("@image file `%s' unreadable: %s"), fullname,
|
||
strerror (errno));
|
||
}
|
||
|
||
free (fullname);
|
||
}
|
||
else
|
||
line_error (_("@image missing filename argument"));
|
||
|
||
if (name_arg)
|
||
free (name_arg);
|
||
}
|
||
|
||
/* Conditionals. */
|
||
|
||
/* A structure which contains `defined' variables. */
|
||
typedef struct defines {
|
||
struct defines *next;
|
||
char *name;
|
||
char *value;
|
||
} DEFINE;
|
||
|
||
/* The linked list of `set' defines. */
|
||
DEFINE *defines = NULL;
|
||
|
||
/* Add NAME to the list of `set' defines. */
|
||
void
|
||
set (name, value)
|
||
char *name;
|
||
char *value;
|
||
{
|
||
DEFINE *temp;
|
||
|
||
for (temp = defines; temp; temp = temp->next)
|
||
if (strcmp (name, temp->name) == 0)
|
||
{
|
||
free (temp->value);
|
||
temp->value = xstrdup (value);
|
||
return;
|
||
}
|
||
|
||
temp = xmalloc (sizeof (DEFINE));
|
||
temp->next = defines;
|
||
temp->name = xstrdup (name);
|
||
temp->value = xstrdup (value);
|
||
defines = temp;
|
||
}
|
||
|
||
/* Remove NAME from the list of `set' defines. */
|
||
void
|
||
clear (name)
|
||
char *name;
|
||
{
|
||
DEFINE *temp, *last;
|
||
|
||
last = NULL;
|
||
temp = defines;
|
||
|
||
while (temp)
|
||
{
|
||
if (strcmp (temp->name, name) == 0)
|
||
{
|
||
if (last)
|
||
last->next = temp->next;
|
||
else
|
||
defines = temp->next;
|
||
|
||
free (temp->name);
|
||
free (temp->value);
|
||
free (temp);
|
||
break;
|
||
}
|
||
last = temp;
|
||
temp = temp->next;
|
||
}
|
||
}
|
||
|
||
/* Return the value of NAME. The return value is NULL if NAME is unset. */
|
||
char *
|
||
set_p (name)
|
||
char *name;
|
||
{
|
||
DEFINE *temp;
|
||
|
||
for (temp = defines; temp; temp = temp->next)
|
||
if (strcmp (temp->name, name) == 0)
|
||
return temp->value;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Create a variable whose name appears as the first word on this line. */
|
||
void
|
||
cm_set ()
|
||
{
|
||
handle_variable (SET);
|
||
}
|
||
|
||
/* Remove a variable whose name appears as the first word on this line. */
|
||
void
|
||
cm_clear ()
|
||
{
|
||
handle_variable (CLEAR);
|
||
}
|
||
|
||
void
|
||
cm_ifset ()
|
||
{
|
||
handle_variable (IFSET);
|
||
}
|
||
|
||
void
|
||
cm_ifclear ()
|
||
{
|
||
handle_variable (IFCLEAR);
|
||
}
|
||
|
||
/* This command takes braces, but we parse the contents specially, so we
|
||
don't use the standard brace popping code.
|
||
|
||
The syntax @ifeq{arg1, arg2, texinfo-commands} performs texinfo-commands
|
||
if ARG1 and ARG2 caselessly string compare to the same string, otherwise,
|
||
it produces no output. */
|
||
void
|
||
cm_ifeq ()
|
||
{
|
||
char **arglist;
|
||
|
||
arglist = get_brace_args (0);
|
||
|
||
if (arglist)
|
||
{
|
||
if (array_len (arglist) > 1)
|
||
{
|
||
if ((strcasecmp (arglist[0], arglist[1]) == 0) &&
|
||
(arglist[2]))
|
||
execute_string ("%s\n", arglist[2]);
|
||
}
|
||
|
||
free_array (arglist);
|
||
}
|
||
}
|
||
|
||
void
|
||
cm_value (arg, start_pos, end_pos)
|
||
int arg, start_pos, end_pos;
|
||
{
|
||
static int value_level = 0, saved_meta_pos = -1;
|
||
|
||
/* All the text after @value{ upto the matching } will eventually
|
||
disappear from output_paragraph, when this function is called
|
||
with ARG == END. If the text produced until then sets
|
||
meta_char_pos, we will need to restore it to the value it had
|
||
before @value was seen. So we need to save the previous value
|
||
of meta_char_pos here. */
|
||
if (arg == START)
|
||
{
|
||
/* If we are already inside some outer @value, don't overwrite
|
||
the value saved in saved_meta_pos. */
|
||
if (!value_level)
|
||
saved_meta_pos = meta_char_pos;
|
||
value_level++;
|
||
/* While the argument of @value is processed, we need to inhibit
|
||
textual transformations like "--" into "-", since @set didn't
|
||
do that when it grabbed the name of the variable. */
|
||
in_fixed_width_font++;
|
||
}
|
||
else
|
||
{
|
||
char *name = (char *) &output_paragraph[start_pos];
|
||
char *value;
|
||
output_paragraph[end_pos] = 0;
|
||
name = xstrdup (name);
|
||
value = set_p (name);
|
||
output_column -= end_pos - start_pos;
|
||
output_paragraph_offset = start_pos;
|
||
|
||
/* Restore the previous value of meta_char_pos if the stuff
|
||
inside this @value{} moved it. */
|
||
if (saved_meta_pos == -1) /* can't happen inside @value{} */
|
||
abort ();
|
||
if (value_level == 1
|
||
&& meta_char_pos >= start_pos && meta_char_pos < end_pos)
|
||
{
|
||
meta_char_pos = saved_meta_pos;
|
||
saved_meta_pos = -1;
|
||
}
|
||
value_level--;
|
||
/* No need to decrement in_fixed_width_font, since before
|
||
we are called with arg == END, the reader loop already
|
||
popped the brace stack, which restored in_fixed_width_font,
|
||
among other things. */
|
||
|
||
if (value)
|
||
execute_string ("%s", value);
|
||
else
|
||
add_word_args (_("{No value for `%s'}"), name);
|
||
|
||
free (name);
|
||
}
|
||
}
|
||
|
||
/* Set, clear, or conditionalize based on ACTION. */
|
||
void
|
||
handle_variable (action)
|
||
int action;
|
||
{
|
||
char *name;
|
||
|
||
get_rest_of_line (0, &name);
|
||
/* If we hit the end of text in get_rest_of_line, backing up
|
||
input pointer will cause the last character of the last line
|
||
be pushed back onto the input, which is wrong. */
|
||
if (input_text_offset < input_text_length)
|
||
backup_input_pointer ();
|
||
handle_variable_internal (action, name);
|
||
free (name);
|
||
}
|
||
|
||
void
|
||
handle_variable_internal (action, name)
|
||
int action;
|
||
char *name;
|
||
{
|
||
char *temp;
|
||
int delimiter, additional_text_present = 0;
|
||
|
||
/* Only the first word of NAME is a valid tag. */
|
||
temp = name;
|
||
delimiter = 0;
|
||
while (*temp && (delimiter || !whitespace (*temp)))
|
||
{
|
||
/* #if defined (SET_WITH_EQUAL) */
|
||
if (*temp == '"' || *temp == '\'')
|
||
{
|
||
if (*temp == delimiter)
|
||
delimiter = 0;
|
||
else
|
||
delimiter = *temp;
|
||
}
|
||
/* #endif SET_WITH_EQUAL */
|
||
temp++;
|
||
}
|
||
|
||
if (*temp)
|
||
additional_text_present++;
|
||
|
||
*temp = 0;
|
||
|
||
if (!*name)
|
||
line_error (_("%c%s requires a name"), COMMAND_PREFIX, command);
|
||
else
|
||
{
|
||
switch (action)
|
||
{
|
||
case SET:
|
||
{
|
||
char *value;
|
||
|
||
#if defined (SET_WITH_EQUAL)
|
||
/* Allow a value to be saved along with a variable. The value is
|
||
the text following an `=' sign in NAME, if any is present. */
|
||
|
||
for (value = name; *value && *value != '='; value++);
|
||
|
||
if (*value)
|
||
*value++ = 0;
|
||
|
||
if (*value == '"' || *value == '\'')
|
||
{
|
||
value++;
|
||
value[strlen (value) - 1] = 0;
|
||
}
|
||
|
||
#else /* !SET_WITH_EQUAL */
|
||
/* The VALUE of NAME is the remainder of the line sans
|
||
whitespace. */
|
||
if (additional_text_present)
|
||
{
|
||
value = temp + 1;
|
||
canon_white (value);
|
||
}
|
||
else
|
||
value = "";
|
||
#endif /* !SET_WITH_VALUE */
|
||
|
||
set (name, value);
|
||
}
|
||
break;
|
||
|
||
case CLEAR:
|
||
clear (name);
|
||
break;
|
||
|
||
case IFSET:
|
||
case IFCLEAR:
|
||
/* If IFSET and NAME is not set, or if IFCLEAR and NAME is set,
|
||
read lines from the the file until we reach a matching
|
||
"@end CONDITION". This means that we only take note of
|
||
"@ifset/clear" and "@end" commands. */
|
||
{
|
||
char condition[8];
|
||
int condition_len;
|
||
int orig_line_number = line_number;
|
||
|
||
if (action == IFSET)
|
||
strcpy (condition, "ifset");
|
||
else
|
||
strcpy (condition, "ifclear");
|
||
|
||
condition_len = strlen (condition);
|
||
|
||
if ((action == IFSET && !set_p (name))
|
||
|| (action == IFCLEAR && set_p (name)))
|
||
{
|
||
int level = 0, done = 0;
|
||
|
||
while (!done && input_text_offset < input_text_length)
|
||
{
|
||
char *freeable_line, *line;
|
||
|
||
get_rest_of_line (0, &freeable_line);
|
||
|
||
for (line = freeable_line; whitespace (*line); line++);
|
||
|
||
if (*line == COMMAND_PREFIX &&
|
||
(strncmp (line + 1, condition, condition_len) == 0))
|
||
level++;
|
||
else if (strncmp (line, "@end", 4) == 0)
|
||
{
|
||
char *cname = line + 4;
|
||
char *temp;
|
||
|
||
while (*cname && whitespace (*cname))
|
||
cname++;
|
||
temp = cname;
|
||
|
||
while (*temp && !whitespace (*temp))
|
||
temp++;
|
||
*temp = 0;
|
||
|
||
if (strcmp (cname, condition) == 0)
|
||
{
|
||
if (!level)
|
||
{
|
||
done = 1;
|
||
}
|
||
else
|
||
level--;
|
||
}
|
||
}
|
||
free (freeable_line);
|
||
}
|
||
|
||
if (!done)
|
||
{
|
||
int save = line_number;
|
||
line_number = orig_line_number;
|
||
line_error (_("Reached eof before matching @end %s"),
|
||
condition);
|
||
line_number = save;
|
||
}
|
||
|
||
/* We found the end of a false @ifset/ifclear. If we are
|
||
in a menu, back up over the newline that ends the ifset,
|
||
since that newline may also begin the next menu entry. */
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
if (action == IFSET)
|
||
begin_insertion (ifset);
|
||
else
|
||
begin_insertion (ifclear);
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Execution of random text not in file. */
|
||
|
||
typedef struct {
|
||
char *string; /* The string buffer. */
|
||
int size; /* The size of the buffer. */
|
||
int in_use; /* Nonzero means string currently in use. */
|
||
} EXECUTION_STRING;
|
||
|
||
static EXECUTION_STRING **execution_strings = NULL;
|
||
static int execution_strings_index = 0;
|
||
static int execution_strings_slots = 0;
|
||
|
||
EXECUTION_STRING *
|
||
get_execution_string (initial_size)
|
||
int initial_size;
|
||
{
|
||
int i = 0;
|
||
EXECUTION_STRING *es = NULL;
|
||
|
||
if (execution_strings)
|
||
{
|
||
for (i = 0; i < execution_strings_index; i++)
|
||
if (execution_strings[i] && (execution_strings[i]->in_use == 0))
|
||
{
|
||
es = execution_strings[i];
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (!es)
|
||
{
|
||
if (execution_strings_index + 1 >= execution_strings_slots)
|
||
{
|
||
execution_strings = xrealloc
|
||
(execution_strings,
|
||
(execution_strings_slots += 3) * sizeof (EXECUTION_STRING *));
|
||
for (; i < execution_strings_slots; i++)
|
||
execution_strings[i] = NULL;
|
||
}
|
||
|
||
execution_strings[execution_strings_index] =
|
||
xmalloc (sizeof (EXECUTION_STRING));
|
||
es = execution_strings[execution_strings_index];
|
||
execution_strings_index++;
|
||
|
||
es->size = 0;
|
||
es->string = NULL;
|
||
es->in_use = 0;
|
||
}
|
||
|
||
if (initial_size > es->size)
|
||
{
|
||
es->string = xrealloc (es->string, initial_size);
|
||
es->size = initial_size;
|
||
}
|
||
return es;
|
||
}
|
||
|
||
/* Given a pointer to TEXT and its desired length NEW_LEN, find TEXT's
|
||
entry in the execution_strings[] array and change the .STRING and
|
||
.SIZE members of that entry as appropriate. */
|
||
void
|
||
maybe_update_execution_strings (text, new_len)
|
||
char **text;
|
||
unsigned new_len;
|
||
{
|
||
int i = 0;
|
||
|
||
if (execution_strings)
|
||
{
|
||
for (i = 0; i < execution_strings_index; i++)
|
||
if (execution_strings[i] && (execution_strings[i]->in_use == 1) &&
|
||
execution_strings[i]->string == *text)
|
||
{
|
||
/* Don't ever shrink the string storage in execution_strings[]!
|
||
execute_string assumes that it is always big enough to store
|
||
every possible execution_string, and will break if that's
|
||
not true. So we only enlarge the string storage if the
|
||
current size isn't big enough. */
|
||
if (execution_strings[i]->size < new_len)
|
||
{
|
||
execution_strings[i]->string =
|
||
*text = xrealloc (*text, new_len + 1);
|
||
execution_strings[i]->size = new_len + 1;
|
||
}
|
||
return;
|
||
}
|
||
}
|
||
/* We should *never* end up here, since if we are inside
|
||
execute_string, TEXT is always in execution_strings[]. */
|
||
abort ();
|
||
}
|
||
|
||
/* Execute the string produced by formatting the ARGs with FORMAT. This
|
||
is like submitting a new file with @include. */
|
||
void
|
||
#if defined (VA_FPRINTF) && __STDC__
|
||
execute_string (char *format, ...)
|
||
#else
|
||
execute_string (format, va_alist)
|
||
char *format;
|
||
va_dcl
|
||
#endif
|
||
{
|
||
EXECUTION_STRING *es;
|
||
char *temp_string;
|
||
#ifdef VA_FPRINTF
|
||
va_list ap;
|
||
#endif
|
||
|
||
es = get_execution_string (4000);
|
||
temp_string = es->string;
|
||
es->in_use = 1;
|
||
|
||
VA_START (ap, format);
|
||
#ifdef VA_SPRINTF
|
||
VA_SPRINTF (temp_string, format, ap);
|
||
#else
|
||
sprintf (temp_string, format, a1, a2, a3, a4, a5, a6, a7, a8);
|
||
#endif /* not VA_SPRINTF */
|
||
va_end (ap);
|
||
|
||
pushfile ();
|
||
input_text_offset = 0;
|
||
input_text = temp_string;
|
||
input_filename = xstrdup (input_filename);
|
||
input_text_length = strlen (temp_string);
|
||
|
||
executing_string++;
|
||
reader_loop ();
|
||
free (input_filename);
|
||
|
||
popfile ();
|
||
executing_string--;
|
||
es->in_use = 0;
|
||
}
|
||
|
||
|
||
/* Return what would be output for STR (in newly-malloced memory), i.e.,
|
||
expand Texinfo commands. If IMPLICIT_CODE is set, expand @code{STR}. */
|
||
|
||
char *
|
||
expansion (str, implicit_code)
|
||
char *str;
|
||
int implicit_code;
|
||
{
|
||
int length;
|
||
char *result;
|
||
|
||
/* Inhibit any real output. */
|
||
int start = output_paragraph_offset;
|
||
int saved_paragraph_is_open = paragraph_is_open;
|
||
int saved_output_column = output_column;
|
||
|
||
/* Inhibit indentation and filling, so that extra newlines
|
||
are not added to the expansion. (This is undesirable if
|
||
we write the expanded text to macro_expansion_output_stream.) */
|
||
int saved_filling_enabled = filling_enabled;
|
||
int saved_indented_fill = indented_fill;
|
||
int saved_no_indent = no_indent;
|
||
int saved_escape_html = escape_html;
|
||
int saved_meta_pos = meta_char_pos;
|
||
int saved_last_char = last_inserted_character;
|
||
int saved_last_nl = last_char_was_newline;
|
||
|
||
/* If we are called in the middle of processing a command, we need
|
||
to dup and save the global variable `command' (which holds the
|
||
name of this command), since the recursive reader loop will free
|
||
it from under our feet if it finds any macros in STR. */
|
||
char *saved_command = command ? xstrdup (command) : NULL;
|
||
|
||
filling_enabled = 0;
|
||
indented_fill = 0;
|
||
no_indent = 1;
|
||
escape_html = 0;
|
||
|
||
inhibit_output_flushing ();
|
||
paragraph_is_open = 1;
|
||
execute_string (implicit_code ? "@code{%s}" : "%s", str);
|
||
uninhibit_output_flushing ();
|
||
|
||
/* Copy the expansion from the buffer. */
|
||
length = output_paragraph_offset - start;
|
||
result = xmalloc (1 + length);
|
||
memcpy (result, (char *) (output_paragraph + start), length);
|
||
result[length] = 0;
|
||
|
||
/* Pretend it never happened. */
|
||
free_and_clear (&command);
|
||
command = saved_command;
|
||
output_paragraph_offset = start;
|
||
paragraph_is_open = saved_paragraph_is_open;
|
||
output_column = saved_output_column;
|
||
filling_enabled = saved_filling_enabled;
|
||
indented_fill = saved_indented_fill;
|
||
no_indent = saved_no_indent;
|
||
escape_html = saved_escape_html;
|
||
meta_char_pos = saved_meta_pos;
|
||
last_inserted_character = saved_last_char;
|
||
last_char_was_newline = saved_last_nl;
|
||
|
||
return result;
|
||
}
|
||
|
||
|
||
/* Return text (info) expansion of STR no matter what the current output
|
||
format is. */
|
||
|
||
char *
|
||
text_expansion (str)
|
||
char *str;
|
||
{
|
||
char *ret;
|
||
int save_html = html;
|
||
|
||
html = 0;
|
||
ret = expansion (str, 0);
|
||
html = save_html;
|
||
|
||
return ret;
|
||
}
|
||
|
||
|
||
/* Set the paragraph indentation variable to the value specified in STRING.
|
||
Values can be:
|
||
`asis': Don't change existing indentation.
|
||
`none': Remove existing indentation.
|
||
NUM: Indent NUM spaces at the starts of paragraphs.
|
||
If NUM is zero, we assume `none'.
|
||
Returns 0 if successful, or nonzero if STRING isn't one of the above. */
|
||
int
|
||
set_paragraph_indent (string)
|
||
char *string;
|
||
{
|
||
if (strcmp (string, "asis") == 0 || strcmp (string, _("asis")) == 0)
|
||
paragraph_start_indent = 0;
|
||
else if (strcmp (string, "none") == 0 || strcmp (string, _("none")) == 0)
|
||
paragraph_start_indent = -1;
|
||
else
|
||
{
|
||
if (sscanf (string, "%d", ¶graph_start_indent) != 1)
|
||
return -1;
|
||
else
|
||
{
|
||
if (paragraph_start_indent == 0)
|
||
paragraph_start_indent = -1;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|