622 lines
12 KiB
C++
622 lines
12 KiB
C++
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// -*- C++ -*-
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/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
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Written by James Clark (jjc@jclark.com)
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This file is part of groff.
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groff is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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groff is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with groff; see the file COPYING. If not, write to the Free Software
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Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "pic.h"
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extern int yyparse();
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output *out;
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int flyback_flag;
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int zero_length_line_flag = 0;
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// Non-zero means we're using a groff driver.
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int driver_extension_flag = 1;
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int compatible_flag = 0;
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int safer_flag = 0;
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int command_char = '.'; // the character that introduces lines
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// that should be passed through tranparently
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static int lf_flag = 1; // non-zero if we should attempt to understand
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// lines beginning with `.lf'
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// Non-zero means a parse error was encountered.
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static int had_parse_error = 0;
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void do_file(const char *filename);
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class top_input : public input {
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FILE *fp;
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int bol;
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int eof;
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int push_back[3];
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int start_lineno;
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public:
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top_input(FILE *);
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int get();
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int peek();
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int get_location(const char **, int *);
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};
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top_input::top_input(FILE *p) : fp(p), bol(1), eof(0)
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{
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push_back[0] = push_back[1] = push_back[2] = EOF;
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start_lineno = current_lineno;
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}
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int top_input::get()
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{
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if (eof)
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return EOF;
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if (push_back[2] != EOF) {
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int c = push_back[2];
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push_back[2] = EOF;
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return c;
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}
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else if (push_back[1] != EOF) {
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int c = push_back[1];
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push_back[1] = EOF;
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return c;
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}
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else if (push_back[0] != EOF) {
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int c = push_back[0];
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push_back[0] = EOF;
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return c;
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}
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int c = getc(fp);
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while (illegal_input_char(c)) {
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error("illegal input character code %1", int(c));
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c = getc(fp);
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bol = 0;
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}
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if (bol && c == '.') {
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c = getc(fp);
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if (c == 'P') {
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c = getc(fp);
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if (c == 'F' || c == 'E') {
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int d = getc(fp);
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if (d != EOF)
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ungetc(d, fp);
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if (d == EOF || d == ' ' || d == '\n' || compatible_flag) {
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eof = 1;
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flyback_flag = c == 'F';
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return EOF;
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}
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push_back[0] = c;
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push_back[1] = 'P';
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return '.';
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}
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if (c == 'S') {
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c = getc(fp);
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if (c != EOF)
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ungetc(c, fp);
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if (c == EOF || c == ' ' || c == '\n' || compatible_flag) {
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error("nested .PS");
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eof = 1;
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return EOF;
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}
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push_back[0] = 'S';
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push_back[1] = 'P';
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return '.';
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}
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if (c != EOF)
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ungetc(c, fp);
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push_back[0] = 'P';
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return '.';
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}
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else {
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if (c != EOF)
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ungetc(c, fp);
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return '.';
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}
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}
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if (c == '\n') {
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bol = 1;
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current_lineno++;
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return '\n';
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}
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bol = 0;
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if (c == EOF) {
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eof = 1;
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error("end of file before .PE or .PF");
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error_with_file_and_line(current_filename, start_lineno - 1,
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".PS was here");
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}
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return c;
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}
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int top_input::peek()
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{
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if (eof)
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return EOF;
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if (push_back[2] != EOF)
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return push_back[2];
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if (push_back[1] != EOF)
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return push_back[1];
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if (push_back[0] != EOF)
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return push_back[0];
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int c = getc(fp);
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while (illegal_input_char(c)) {
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error("illegal input character code %1", int(c));
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c = getc(fp);
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bol = 0;
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}
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if (bol && c == '.') {
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c = getc(fp);
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if (c == 'P') {
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c = getc(fp);
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if (c == 'F' || c == 'E') {
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int d = getc(fp);
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if (d != EOF)
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ungetc(d, fp);
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if (d == EOF || d == ' ' || d == '\n' || compatible_flag) {
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eof = 1;
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flyback_flag = c == 'F';
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return EOF;
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}
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push_back[0] = c;
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push_back[1] = 'P';
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push_back[2] = '.';
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return '.';
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}
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if (c == 'S') {
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c = getc(fp);
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if (c != EOF)
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ungetc(c, fp);
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if (c == EOF || c == ' ' || c == '\n' || compatible_flag) {
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error("nested .PS");
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eof = 1;
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return EOF;
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}
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push_back[0] = 'S';
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push_back[1] = 'P';
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push_back[2] = '.';
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return '.';
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}
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if (c != EOF)
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ungetc(c, fp);
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push_back[0] = 'P';
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push_back[1] = '.';
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return '.';
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}
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else {
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if (c != EOF)
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ungetc(c, fp);
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push_back[0] = '.';
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return '.';
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}
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}
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if (c != EOF)
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ungetc(c, fp);
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if (c == '\n')
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return '\n';
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return c;
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}
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int top_input::get_location(const char **filenamep, int *linenop)
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{
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*filenamep = current_filename;
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*linenop = current_lineno;
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return 1;
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}
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void do_picture(FILE *fp)
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{
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flyback_flag = 0;
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int c;
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while ((c = getc(fp)) == ' ')
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;
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if (c == '<') {
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string filename;
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while ((c = getc(fp)) == ' ')
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;
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while (c != EOF && c != ' ' && c != '\n') {
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filename += char(c);
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c = getc(fp);
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}
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if (c == ' ') {
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do {
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c = getc(fp);
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} while (c != EOF && c != '\n');
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}
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if (c == '\n')
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current_lineno++;
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if (filename.length() == 0)
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error("missing filename after `<'");
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else {
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filename += '\0';
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const char *old_filename = current_filename;
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int old_lineno = current_lineno;
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// filenames must be permanent
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do_file(strsave(filename.contents()));
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current_filename = old_filename;
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current_lineno = old_lineno;
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}
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out->set_location(current_filename, current_lineno);
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}
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else {
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out->set_location(current_filename, current_lineno);
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string start_line;
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while (c != EOF) {
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if (c == '\n') {
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current_lineno++;
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break;
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}
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start_line += c;
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c = getc(fp);
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}
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if (c == EOF)
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return;
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start_line += '\0';
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double wid, ht;
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switch (sscanf(&start_line[0], "%lf %lf", &wid, &ht)) {
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case 1:
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ht = 0.0;
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break;
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case 2:
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break;
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default:
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ht = wid = 0.0;
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break;
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}
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out->set_desired_width_height(wid, ht);
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out->set_args(start_line.contents());
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lex_init(new top_input(fp));
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if (yyparse()) {
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had_parse_error = 1;
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lex_error("giving up on this picture");
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}
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parse_cleanup();
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lex_cleanup();
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// skip the rest of the .PF/.PE line
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while ((c = getc(fp)) != EOF && c != '\n')
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;
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if (c == '\n')
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current_lineno++;
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out->set_location(current_filename, current_lineno);
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}
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}
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void do_file(const char *filename)
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{
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FILE *fp;
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if (strcmp(filename, "-") == 0)
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fp = stdin;
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else {
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errno = 0;
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fp = fopen(filename, "r");
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if (fp == 0)
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fatal("can't open `%1': %2", filename, strerror(errno));
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}
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out->set_location(filename, 1);
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current_filename = filename;
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current_lineno = 1;
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enum { START, MIDDLE, HAD_DOT, HAD_P, HAD_PS, HAD_l, HAD_lf } state = START;
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for (;;) {
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int c = getc(fp);
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if (c == EOF)
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break;
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switch (state) {
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case START:
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if (c == '.')
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state = HAD_DOT;
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else {
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putchar(c);
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if (c == '\n') {
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current_lineno++;
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state = START;
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}
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else
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state = MIDDLE;
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}
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break;
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case MIDDLE:
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putchar(c);
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if (c == '\n') {
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current_lineno++;
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state = START;
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}
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break;
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case HAD_DOT:
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if (c == 'P')
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state = HAD_P;
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else if (lf_flag && c == 'l')
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state = HAD_l;
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else {
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putchar('.');
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putchar(c);
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if (c == '\n') {
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current_lineno++;
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state = START;
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}
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else
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state = MIDDLE;
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}
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break;
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case HAD_P:
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if (c == 'S')
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state = HAD_PS;
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else {
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putchar('.');
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putchar('P');
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putchar(c);
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if (c == '\n') {
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current_lineno++;
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state = START;
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}
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else
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state = MIDDLE;
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}
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break;
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case HAD_PS:
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if (c == ' ' || c == '\n' || compatible_flag) {
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ungetc(c, fp);
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do_picture(fp);
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state = START;
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}
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else {
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fputs(".PS", stdout);
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putchar(c);
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state = MIDDLE;
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}
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break;
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case HAD_l:
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if (c == 'f')
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state = HAD_lf;
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else {
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putchar('.');
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putchar('l');
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putchar(c);
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if (c == '\n') {
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current_lineno++;
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state = START;
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}
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else
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state = MIDDLE;
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}
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break;
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case HAD_lf:
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if (c == ' ' || c == '\n' || compatible_flag) {
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string line;
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while (c != EOF) {
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line += c;
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if (c == '\n') {
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current_lineno++;
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break;
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}
|
||
|
|
c = getc(fp);
|
||
|
|
}
|
||
|
|
line += '\0';
|
||
|
|
interpret_lf_args(line.contents());
|
||
|
|
printf(".lf%s", line.contents());
|
||
|
|
state = START;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
fputs(".lf", stdout);
|
||
|
|
putchar(c);
|
||
|
|
state = MIDDLE;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
assert(0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
switch (state) {
|
||
|
|
case START:
|
||
|
|
break;
|
||
|
|
case MIDDLE:
|
||
|
|
putchar('\n');
|
||
|
|
break;
|
||
|
|
case HAD_DOT:
|
||
|
|
fputs(".\n", stdout);
|
||
|
|
break;
|
||
|
|
case HAD_P:
|
||
|
|
fputs(".P\n", stdout);
|
||
|
|
break;
|
||
|
|
case HAD_PS:
|
||
|
|
fputs(".PS\n", stdout);
|
||
|
|
break;
|
||
|
|
case HAD_l:
|
||
|
|
fputs(".l\n", stdout);
|
||
|
|
break;
|
||
|
|
case HAD_lf:
|
||
|
|
fputs(".lf\n", stdout);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (fp != stdin)
|
||
|
|
fclose(fp);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef FIG_SUPPORT
|
||
|
|
void do_whole_file(const char *filename)
|
||
|
|
{
|
||
|
|
// Do not set current_filename.
|
||
|
|
FILE *fp;
|
||
|
|
if (strcmp(filename, "-") == 0)
|
||
|
|
fp = stdin;
|
||
|
|
else {
|
||
|
|
errno = 0;
|
||
|
|
fp = fopen(filename, "r");
|
||
|
|
if (fp == 0)
|
||
|
|
fatal("can't open `%1': %2", filename, strerror(errno));
|
||
|
|
}
|
||
|
|
lex_init(new file_input(fp, filename));
|
||
|
|
if (yyparse())
|
||
|
|
had_parse_error = 1;
|
||
|
|
parse_cleanup();
|
||
|
|
lex_cleanup();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
void usage()
|
||
|
|
{
|
||
|
|
fprintf(stderr, "usage: %s [ -nvC ] [ filename ... ]\n", program_name);
|
||
|
|
#ifdef TEX_SUPPORT
|
||
|
|
fprintf(stderr, " %s -t [ -cvzC ] [ filename ... ]\n", program_name);
|
||
|
|
#endif
|
||
|
|
#ifdef FIG_SUPPORT
|
||
|
|
fprintf(stderr, " %s -f [ -v ] [ filename ]\n", program_name);
|
||
|
|
#endif
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef __MSDOS__
|
||
|
|
static char *fix_program_name(char *arg, char *dflt)
|
||
|
|
{
|
||
|
|
if (!arg)
|
||
|
|
return dflt;
|
||
|
|
char *prog = strchr(arg, '\0');
|
||
|
|
for (;;) {
|
||
|
|
if (prog == arg)
|
||
|
|
break;
|
||
|
|
--prog;
|
||
|
|
if (strchr("\\/:", *prog)) {
|
||
|
|
prog++;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
char *ext = strchr(prog, '.');
|
||
|
|
if (ext)
|
||
|
|
*ext = '\0';
|
||
|
|
for (char *p = prog; *p; p++)
|
||
|
|
if ('A' <= *p && *p <= 'Z')
|
||
|
|
*p = 'a' + (*p - 'A');
|
||
|
|
return prog;
|
||
|
|
}
|
||
|
|
#endif /* __MSDOS__ */
|
||
|
|
|
||
|
|
int main(int argc, char **argv)
|
||
|
|
{
|
||
|
|
#ifdef __MSDOS__
|
||
|
|
argv[0] = fix_program_name(argv[0], "pic");
|
||
|
|
#endif /* __MSDOS__ */
|
||
|
|
program_name = argv[0];
|
||
|
|
static char stderr_buf[BUFSIZ];
|
||
|
|
setbuf(stderr, stderr_buf);
|
||
|
|
int opt;
|
||
|
|
#ifdef TEX_SUPPORT
|
||
|
|
int tex_flag = 0;
|
||
|
|
int tpic_flag = 0;
|
||
|
|
#endif
|
||
|
|
#ifdef FIG_SUPPORT
|
||
|
|
int whole_file_flag = 0;
|
||
|
|
int fig_flag = 0;
|
||
|
|
#endif
|
||
|
|
while ((opt = getopt(argc, argv, "T:CDStcvnxzpf")) != EOF)
|
||
|
|
switch (opt) {
|
||
|
|
case 'C':
|
||
|
|
compatible_flag = 1;
|
||
|
|
break;
|
||
|
|
case 'D':
|
||
|
|
case 'T':
|
||
|
|
break;
|
||
|
|
case 'S':
|
||
|
|
safer_flag = 1;
|
||
|
|
break;
|
||
|
|
case 'f':
|
||
|
|
#ifdef FIG_SUPPORT
|
||
|
|
whole_file_flag++;
|
||
|
|
fig_flag++;
|
||
|
|
#else
|
||
|
|
fatal("fig support not included");
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
case 'n':
|
||
|
|
driver_extension_flag = 0;
|
||
|
|
break;
|
||
|
|
case 'p':
|
||
|
|
case 'x':
|
||
|
|
warning("-%1 option is obsolete", char(opt));
|
||
|
|
break;
|
||
|
|
case 't':
|
||
|
|
#ifdef TEX_SUPPORT
|
||
|
|
tex_flag++;
|
||
|
|
#else
|
||
|
|
fatal("TeX support not included");
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
case 'c':
|
||
|
|
#ifdef TEX_SUPPORT
|
||
|
|
tpic_flag++;
|
||
|
|
#else
|
||
|
|
fatal("TeX support not included");
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
case 'v':
|
||
|
|
{
|
||
|
|
extern const char *version_string;
|
||
|
|
fprintf(stderr, "GNU pic version %s\n", version_string);
|
||
|
|
fflush(stderr);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 'z':
|
||
|
|
// zero length lines will be printed as dots
|
||
|
|
zero_length_line_flag++;
|
||
|
|
break;
|
||
|
|
case '?':
|
||
|
|
usage();
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
assert(0);
|
||
|
|
}
|
||
|
|
parse_init();
|
||
|
|
#ifdef TEX_SUPPORT
|
||
|
|
if (tpic_flag) {
|
||
|
|
out = make_tpic_output();
|
||
|
|
lf_flag = 0;
|
||
|
|
}
|
||
|
|
else if (tex_flag) {
|
||
|
|
out = make_tex_output();
|
||
|
|
command_char = '\\';
|
||
|
|
lf_flag = 0;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
#ifdef FIG_SUPPORT
|
||
|
|
if (fig_flag)
|
||
|
|
out = make_fig_output();
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
out = make_troff_output();
|
||
|
|
#ifdef FIG_SUPPORT
|
||
|
|
if (whole_file_flag) {
|
||
|
|
if (optind >= argc)
|
||
|
|
do_whole_file("-");
|
||
|
|
else if (argc - optind > 1)
|
||
|
|
usage();
|
||
|
|
else
|
||
|
|
do_whole_file(argv[optind]);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
#endif
|
||
|
|
if (optind >= argc)
|
||
|
|
do_file("-");
|
||
|
|
else
|
||
|
|
for (int i = optind; i < argc; i++)
|
||
|
|
do_file(argv[i]);
|
||
|
|
#ifdef FIG_SUPPORT
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
delete out;
|
||
|
|
if (ferror(stdout) || fflush(stdout) < 0)
|
||
|
|
fatal("output error");
|
||
|
|
return had_parse_error;
|
||
|
|
}
|
||
|
|
|