275 lines
7.8 KiB
C
275 lines
7.8 KiB
C
/* ed.h: type and constant definitions for the ed editor. */
|
|
/*
|
|
* Copyright (c) 1993 Andrew Moore
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)ed.h,v 1.5 1994/02/01 00:34:39 alm Exp
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <regex.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#define ERR (-2)
|
|
#define EMOD (-3)
|
|
#define FATAL (-4)
|
|
|
|
#define MINBUFSZ 512 /* minimum buffer size - must be > 0 */
|
|
#define SE_MAX 30 /* max subexpressions in a regular expression */
|
|
#ifdef INT_MAX
|
|
# define LINECHARS INT_MAX /* max chars per line */
|
|
#else
|
|
# define LINECHARS MAXINT /* max chars per line */
|
|
#endif
|
|
|
|
/* gflags */
|
|
#define GLB 001 /* global command */
|
|
#define GPR 002 /* print after command */
|
|
#define GLS 004 /* list after command */
|
|
#define GNP 010 /* enumerate after command */
|
|
#define GSG 020 /* global substitute */
|
|
|
|
typedef regex_t pattern_t;
|
|
|
|
/* Line node */
|
|
typedef struct line {
|
|
struct line *q_forw;
|
|
struct line *q_back;
|
|
off_t seek; /* address of line in scratch buffer */
|
|
int len; /* length of line */
|
|
} line_t;
|
|
|
|
|
|
typedef struct undo {
|
|
|
|
/* type of undo nodes */
|
|
#define UADD 0
|
|
#define UDEL 1
|
|
#define UMOV 2
|
|
#define VMOV 3
|
|
|
|
int type; /* command type */
|
|
line_t *h; /* head of list */
|
|
line_t *t; /* tail of list */
|
|
} undo_t;
|
|
|
|
#ifndef max
|
|
# define max(a,b) ((a) > (b) ? (a) : (b))
|
|
#endif
|
|
#ifndef min
|
|
# define min(a,b) ((a) < (b) ? (a) : (b))
|
|
#endif
|
|
|
|
#define INC_MOD(l, k) ((l) + 1 > (k) ? 0 : (l) + 1)
|
|
#define DEC_MOD(l, k) ((l) - 1 < 0 ? (k) : (l) - 1)
|
|
|
|
/* SPL1: disable some interrupts (requires reliable signals) */
|
|
#define SPL1() mutex++
|
|
|
|
/* SPL0: enable all interrupts; check sigflags (requires reliable signals) */
|
|
#define SPL0() \
|
|
if (--mutex == 0) { \
|
|
if (sigflags & (1 << (SIGHUP - 1))) handle_hup(SIGHUP); \
|
|
if (sigflags & (1 << (SIGINT - 1))) handle_int(SIGINT); \
|
|
}
|
|
|
|
/* STRTOL: convert a string to long */
|
|
#define STRTOL(i, p) { \
|
|
if (((i = strtol(p, &p, 10)) == LONG_MIN || i == LONG_MAX) && \
|
|
errno == ERANGE) { \
|
|
errmsg = "number out of range"; \
|
|
i = 0; \
|
|
return ERR; \
|
|
} \
|
|
}
|
|
|
|
#if defined(sun) || defined(NO_REALLOC_NULL)
|
|
/* REALLOC: assure at least a minimum size for buffer b */
|
|
#define REALLOC(b,n,i,err) \
|
|
if ((i) > (n)) { \
|
|
int ti = (n); \
|
|
char *ts; \
|
|
SPL1(); \
|
|
if ((b) != NULL) { \
|
|
if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \
|
|
fprintf(stderr, "%s\n", strerror(errno)); \
|
|
errmsg = "out of memory"; \
|
|
SPL0(); \
|
|
return err; \
|
|
} \
|
|
} else { \
|
|
if ((ts = (char *) malloc(ti += max((i), MINBUFSZ))) == NULL) { \
|
|
fprintf(stderr, "%s\n", strerror(errno)); \
|
|
errmsg = "out of memory"; \
|
|
SPL0(); \
|
|
return err; \
|
|
} \
|
|
} \
|
|
(n) = ti; \
|
|
(b) = ts; \
|
|
SPL0(); \
|
|
}
|
|
#else /* NO_REALLOC_NULL */
|
|
/* REALLOC: assure at least a minimum size for buffer b */
|
|
#define REALLOC(b,n,i,err) \
|
|
if ((i) > (n)) { \
|
|
int ti = (n); \
|
|
char *ts; \
|
|
SPL1(); \
|
|
if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \
|
|
fprintf(stderr, "%s\n", strerror(errno)); \
|
|
errmsg = "out of memory"; \
|
|
SPL0(); \
|
|
return err; \
|
|
} \
|
|
(n) = ti; \
|
|
(b) = ts; \
|
|
SPL0(); \
|
|
}
|
|
#endif /* NO_REALLOC_NULL */
|
|
|
|
/* REQUE: link pred before succ */
|
|
#define REQUE(pred, succ) (pred)->q_forw = (succ), (succ)->q_back = (pred)
|
|
|
|
/* INSQUE: insert elem in circular queue after pred */
|
|
#define INSQUE(elem, pred) \
|
|
{ \
|
|
REQUE((elem), (pred)->q_forw); \
|
|
REQUE((pred), elem); \
|
|
}
|
|
|
|
/* REMQUE: remove_lines elem from circular queue */
|
|
#define REMQUE(elem) REQUE((elem)->q_back, (elem)->q_forw);
|
|
|
|
/* NUL_TO_NEWLINE: overwrite ASCII NULs with newlines */
|
|
#define NUL_TO_NEWLINE(s, l) translit_text(s, l, '\0', '\n')
|
|
|
|
/* NEWLINE_TO_NUL: overwrite newlines with ASCII NULs */
|
|
#define NEWLINE_TO_NUL(s, l) translit_text(s, l, '\n', '\0')
|
|
|
|
/* Local Function Declarations */
|
|
void add_line_node(line_t *);
|
|
int append_lines(long);
|
|
int apply_subst_template(const char *, regmatch_t *, int, int);
|
|
int build_active_list(int);
|
|
int cbc_decode(char *, FILE *);
|
|
int cbc_encode(char *, int, FILE *);
|
|
int check_addr_range(long, long);
|
|
void clear_active_list(void);
|
|
void clear_undo_stack(void);
|
|
int close_sbuf(void);
|
|
int copy_lines(long);
|
|
int delete_lines(long, long);
|
|
void des_error(const char *);
|
|
int display_lines(long, long, int);
|
|
line_t *dup_line_node(line_t *);
|
|
int exec_command(void);
|
|
long exec_global(int, int);
|
|
void expand_des_key(char *, char *);
|
|
int extract_addr_range(void);
|
|
char *extract_pattern(int);
|
|
int extract_subst_tail(int *, long *);
|
|
char *extract_subst_template(void);
|
|
int filter_lines(long, long, char *);
|
|
int flush_des_file(FILE *);
|
|
line_t *get_addressed_line_node(long);
|
|
pattern_t *get_compiled_pattern(void);
|
|
int get_des_char(FILE *);
|
|
char *get_extended_line(int *, int);
|
|
char *get_filename(void);
|
|
int get_keyword(void);
|
|
long get_line_node_addr(line_t *);
|
|
long get_matching_node_addr(pattern_t *, int);
|
|
long get_marked_node_addr(int);
|
|
char *get_sbuf_line(line_t *);
|
|
int get_shell_command(void);
|
|
int get_stream_line(FILE *);
|
|
int get_tty_line(void);
|
|
void handle_hup(int);
|
|
void handle_int(int);
|
|
void handle_winch(int);
|
|
int has_trailing_escape(char *, char *);
|
|
int hex_to_binary(int, int);
|
|
void init_buffers(void);
|
|
void init_des_cipher(void);
|
|
int is_legal_filename(char *);
|
|
int join_lines(long, long);
|
|
int mark_line_node(line_t *, int);
|
|
int move_lines(long);
|
|
line_t *next_active_node(void);
|
|
long next_addr(void);
|
|
int open_sbuf(void);
|
|
char *parse_char_class(char *);
|
|
int pop_undo_stack(void);
|
|
undo_t *push_undo_stack(int, long, long);
|
|
int put_des_char(int, FILE *);
|
|
const char *put_sbuf_line(const char *);
|
|
int put_stream_line(FILE *, const char *, int);
|
|
int put_tty_line(const char *, int, long, int);
|
|
void quit(int);
|
|
long read_file(char *, long);
|
|
long read_stream(FILE *, long);
|
|
int search_and_replace(pattern_t *, int, int);
|
|
int set_active_node(line_t *);
|
|
void set_des_key(char *);
|
|
void signal_hup(int);
|
|
void signal_int(int);
|
|
char *strip_escapes(char *);
|
|
int substitute_matching_text(pattern_t *, line_t *, int, int);
|
|
char *translit_text(char *, int, int, int);
|
|
void unmark_line_node(line_t *);
|
|
void unset_active_nodes(line_t *, line_t *);
|
|
long write_file(char *, const char *, long, long);
|
|
long write_stream(FILE *, long, long);
|
|
|
|
/* global buffers */
|
|
extern char stdinbuf[];
|
|
extern char *ibuf;
|
|
extern char *ibufp;
|
|
extern int ibufsz;
|
|
|
|
/* global flags */
|
|
extern int isbinary;
|
|
extern int isglobal;
|
|
extern int modified;
|
|
extern int mutex;
|
|
extern int sigflags;
|
|
|
|
/* global vars */
|
|
extern long addr_last;
|
|
extern long current_addr;
|
|
extern const char *errmsg;
|
|
extern long first_addr;
|
|
extern int lineno;
|
|
extern long second_addr;
|
|
extern long u_addr_last;
|
|
extern long u_current_addr;
|