1994-05-27 12:33:43 +00:00
|
|
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/*-
|
|
|
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* Copyright (c) 1992 Diomidis Spinellis.
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Diomidis Spinellis of Imperial College, University of London.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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|
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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2001-12-12 23:20:16 +00:00
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#include <sys/cdefs.h>
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|
|
__FBSDID("$FreeBSD$");
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|
|
|
1994-05-27 12:33:43 +00:00
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|
|
#ifndef lint
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2001-12-12 23:20:16 +00:00
|
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|
static const char sccsid[] = "@(#)process.c 8.6 (Berkeley) 4/20/94";
|
1997-08-11 07:21:08 +00:00
|
|
|
#endif
|
1994-05-27 12:33:43 +00:00
|
|
|
|
|
|
|
#include <sys/types.h>
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|
|
#include <sys/stat.h>
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|
|
#include <sys/ioctl.h>
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|
|
|
#include <sys/uio.h>
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|
|
|
|
|
|
|
#include <ctype.h>
|
1997-08-11 07:21:08 +00:00
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|
|
#include <err.h>
|
1994-05-27 12:33:43 +00:00
|
|
|
#include <errno.h>
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|
|
#include <fcntl.h>
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|
|
#include <limits.h>
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|
|
#include <regex.h>
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|
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#include <stdio.h>
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|
|
#include <stdlib.h>
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|
|
#include <string.h>
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|
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#include <unistd.h>
|
2004-07-13 04:35:43 +00:00
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|
|
#include <wchar.h>
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#include <wctype.h>
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1994-05-27 12:33:43 +00:00
|
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#include "defs.h"
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#include "extern.h"
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|
2004-07-14 10:06:22 +00:00
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|
static SPACE HS, PS, SS, YS;
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1994-05-27 12:33:43 +00:00
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|
#define pd PS.deleted
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#define ps PS.space
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#define psl PS.len
|
2014-08-08 17:29:01 +00:00
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|
#define psanl PS.append_newline
|
1994-05-27 12:33:43 +00:00
|
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|
#define hs HS.space
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#define hsl HS.len
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|
2015-01-13 00:04:22 +00:00
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static inline int applies(struct s_command *);
|
2004-07-14 10:06:22 +00:00
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|
static void do_tr(struct s_tr *);
|
2002-03-22 01:42:45 +00:00
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|
|
static void flush_appends(void);
|
2004-07-13 04:35:43 +00:00
|
|
|
static void lputs(char *, size_t);
|
2015-01-08 16:33:15 +00:00
|
|
|
static int regexec_e(regex_t *, const char *, int, int, size_t);
|
2002-03-22 01:42:45 +00:00
|
|
|
static void regsub(SPACE *, char *, char *);
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|
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static int substitute(struct s_command *);
|
1994-05-27 12:33:43 +00:00
|
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struct s_appends *appends; /* Array of pointers to strings to append. */
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static int appendx; /* Index into appends array. */
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int appendnum; /* Size of appends array. */
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|
static int lastaddr; /* Set by applies if last address of a range. */
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|
|
static int sdone; /* If any substitutes since last line input. */
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|
|
/* Iov structure for 'w' commands. */
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|
|
|
static regex_t *defpreg;
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|
|
|
size_t maxnsub;
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|
|
regmatch_t *match;
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|
|
|
2014-08-08 17:29:01 +00:00
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|
|
#define OUT() do { \
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|
|
|
fwrite(ps, 1, psl, outfile); \
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|
|
|
if (psanl) fputc('\n', outfile); \
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|
|
|
} while (0)
|
1994-05-27 12:33:43 +00:00
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|
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|
|
|
|
void
|
2003-11-04 12:15:20 +00:00
|
|
|
process(void)
|
1994-05-27 12:33:43 +00:00
|
|
|
{
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|
|
struct s_command *cp;
|
|
|
|
SPACE tspace;
|
2005-04-09 14:31:41 +00:00
|
|
|
size_t oldpsl = 0;
|
1995-08-16 05:56:44 +00:00
|
|
|
char *p;
|
2014-08-08 17:29:01 +00:00
|
|
|
int oldpsanl;
|
1994-05-27 12:33:43 +00:00
|
|
|
|
2002-09-20 19:40:23 +00:00
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|
|
p = NULL;
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|
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|
1994-05-27 12:33:43 +00:00
|
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|
for (linenum = 0; mf_fgets(&PS, REPLACE);) {
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|
|
pd = 0;
|
1995-08-16 05:56:44 +00:00
|
|
|
top:
|
1994-05-27 12:33:43 +00:00
|
|
|
cp = prog;
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|
|
redirect:
|
|
|
|
while (cp != NULL) {
|
|
|
|
if (!applies(cp)) {
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|
|
cp = cp->next;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
switch (cp->code) {
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|
|
|
case '{':
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|
|
|
cp = cp->u.c;
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|
|
goto redirect;
|
|
|
|
case 'a':
|
|
|
|
if (appendx >= appendnum)
|
2001-07-24 14:05:21 +00:00
|
|
|
if ((appends = realloc(appends,
|
1994-05-27 12:33:43 +00:00
|
|
|
sizeof(struct s_appends) *
|
2001-07-24 14:05:21 +00:00
|
|
|
(appendnum *= 2))) == NULL)
|
|
|
|
err(1, "realloc");
|
1994-05-27 12:33:43 +00:00
|
|
|
appends[appendx].type = AP_STRING;
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|
|
appends[appendx].s = cp->t;
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|
|
appends[appendx].len = strlen(cp->t);
|
|
|
|
appendx++;
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|
|
break;
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|
|
case 'b':
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|
|
|
cp = cp->u.c;
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|
|
goto redirect;
|
|
|
|
case 'c':
|
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|
|
pd = 1;
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|
psl = 0;
|
2007-04-01 13:25:03 +00:00
|
|
|
if (cp->a2 == NULL || lastaddr || lastline())
|
2003-11-04 13:09:16 +00:00
|
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|
(void)fprintf(outfile, "%s", cp->t);
|
1994-05-27 12:33:43 +00:00
|
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|
break;
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|
|
case 'd':
|
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|
pd = 1;
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|
goto new;
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|
|
case 'D':
|
|
|
|
if (pd)
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|
|
|
goto new;
|
2002-04-07 02:29:56 +00:00
|
|
|
if (psl == 0 ||
|
2002-08-11 09:53:44 +00:00
|
|
|
(p = memchr(ps, '\n', psl)) == NULL) {
|
1994-05-27 12:33:43 +00:00
|
|
|
pd = 1;
|
1995-08-16 05:56:44 +00:00
|
|
|
goto new;
|
|
|
|
} else {
|
|
|
|
psl -= (p + 1) - ps;
|
1994-05-27 12:33:43 +00:00
|
|
|
memmove(ps, p + 1, psl);
|
1995-08-16 05:56:44 +00:00
|
|
|
goto top;
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
|
|
|
case 'g':
|
|
|
|
cspace(&PS, hs, hsl, REPLACE);
|
|
|
|
break;
|
|
|
|
case 'G':
|
2007-06-12 10:56:38 +00:00
|
|
|
cspace(&PS, "\n", 1, APPEND);
|
|
|
|
cspace(&PS, hs, hsl, APPEND);
|
1994-05-27 12:33:43 +00:00
|
|
|
break;
|
|
|
|
case 'h':
|
|
|
|
cspace(&HS, ps, psl, REPLACE);
|
|
|
|
break;
|
|
|
|
case 'H':
|
2007-06-12 10:56:38 +00:00
|
|
|
cspace(&HS, "\n", 1, APPEND);
|
|
|
|
cspace(&HS, ps, psl, APPEND);
|
1994-05-27 12:33:43 +00:00
|
|
|
break;
|
|
|
|
case 'i':
|
2003-11-04 13:09:16 +00:00
|
|
|
(void)fprintf(outfile, "%s", cp->t);
|
1994-05-27 12:33:43 +00:00
|
|
|
break;
|
|
|
|
case 'l':
|
2004-07-13 04:35:43 +00:00
|
|
|
lputs(ps, psl);
|
1994-05-27 12:33:43 +00:00
|
|
|
break;
|
|
|
|
case 'n':
|
|
|
|
if (!nflag && !pd)
|
2007-06-12 12:17:25 +00:00
|
|
|
OUT();
|
1994-05-27 12:33:43 +00:00
|
|
|
flush_appends();
|
|
|
|
if (!mf_fgets(&PS, REPLACE))
|
|
|
|
exit(0);
|
|
|
|
pd = 0;
|
|
|
|
break;
|
|
|
|
case 'N':
|
|
|
|
flush_appends();
|
2007-06-12 10:56:38 +00:00
|
|
|
cspace(&PS, "\n", 1, APPEND);
|
|
|
|
if (!mf_fgets(&PS, APPEND))
|
1994-05-27 12:33:43 +00:00
|
|
|
exit(0);
|
|
|
|
break;
|
|
|
|
case 'p':
|
|
|
|
if (pd)
|
|
|
|
break;
|
2007-06-12 12:17:25 +00:00
|
|
|
OUT();
|
1994-05-27 12:33:43 +00:00
|
|
|
break;
|
|
|
|
case 'P':
|
|
|
|
if (pd)
|
|
|
|
break;
|
2006-05-27 19:32:28 +00:00
|
|
|
if ((p = memchr(ps, '\n', psl)) != NULL) {
|
1995-08-16 05:56:44 +00:00
|
|
|
oldpsl = psl;
|
2014-08-08 17:29:01 +00:00
|
|
|
oldpsanl = psanl;
|
2002-06-22 01:42:26 +00:00
|
|
|
psl = p - ps;
|
2014-08-08 17:29:01 +00:00
|
|
|
psanl = 1;
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
2007-06-12 12:17:25 +00:00
|
|
|
OUT();
|
2014-08-08 17:29:01 +00:00
|
|
|
if (p != NULL) {
|
1995-08-16 05:56:44 +00:00
|
|
|
psl = oldpsl;
|
2014-08-08 17:29:01 +00:00
|
|
|
psanl = oldpsanl;
|
|
|
|
}
|
1994-05-27 12:33:43 +00:00
|
|
|
break;
|
|
|
|
case 'q':
|
|
|
|
if (!nflag && !pd)
|
2007-06-12 12:17:25 +00:00
|
|
|
OUT();
|
1994-05-27 12:33:43 +00:00
|
|
|
flush_appends();
|
|
|
|
exit(0);
|
|
|
|
case 'r':
|
|
|
|
if (appendx >= appendnum)
|
2001-07-24 14:05:21 +00:00
|
|
|
if ((appends = realloc(appends,
|
1994-05-27 12:33:43 +00:00
|
|
|
sizeof(struct s_appends) *
|
2001-07-24 14:05:21 +00:00
|
|
|
(appendnum *= 2))) == NULL)
|
|
|
|
err(1, "realloc");
|
1994-05-27 12:33:43 +00:00
|
|
|
appends[appendx].type = AP_FILE;
|
|
|
|
appends[appendx].s = cp->t;
|
|
|
|
appends[appendx].len = strlen(cp->t);
|
|
|
|
appendx++;
|
|
|
|
break;
|
|
|
|
case 's':
|
|
|
|
sdone |= substitute(cp);
|
|
|
|
break;
|
|
|
|
case 't':
|
|
|
|
if (sdone) {
|
|
|
|
sdone = 0;
|
|
|
|
cp = cp->u.c;
|
|
|
|
goto redirect;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 'w':
|
|
|
|
if (pd)
|
|
|
|
break;
|
|
|
|
if (cp->u.fd == -1 && (cp->u.fd = open(cp->t,
|
|
|
|
O_WRONLY|O_APPEND|O_CREAT|O_TRUNC,
|
|
|
|
DEFFILEMODE)) == -1)
|
1997-08-11 07:21:08 +00:00
|
|
|
err(1, "%s", cp->t);
|
2008-02-09 09:12:02 +00:00
|
|
|
if (write(cp->u.fd, ps, psl) != (ssize_t)psl ||
|
2002-06-22 01:42:26 +00:00
|
|
|
write(cp->u.fd, "\n", 1) != 1)
|
1997-08-11 07:21:08 +00:00
|
|
|
err(1, "%s", cp->t);
|
1994-05-27 12:33:43 +00:00
|
|
|
break;
|
|
|
|
case 'x':
|
2007-06-12 12:05:24 +00:00
|
|
|
/*
|
|
|
|
* If the hold space is null, make it empty
|
|
|
|
* but not null. Otherwise the pattern space
|
|
|
|
* will become null after the swap, which is
|
|
|
|
* an abnormal condition.
|
|
|
|
*/
|
2002-07-03 14:32:43 +00:00
|
|
|
if (hs == NULL)
|
|
|
|
cspace(&HS, "", 0, REPLACE);
|
1994-05-27 12:33:43 +00:00
|
|
|
tspace = PS;
|
|
|
|
PS = HS;
|
2014-08-08 17:29:01 +00:00
|
|
|
psanl = tspace.append_newline;
|
1994-05-27 12:33:43 +00:00
|
|
|
HS = tspace;
|
|
|
|
break;
|
|
|
|
case 'y':
|
2002-04-07 02:29:56 +00:00
|
|
|
if (pd || psl == 0)
|
1994-05-27 12:33:43 +00:00
|
|
|
break;
|
2004-07-14 10:06:22 +00:00
|
|
|
do_tr(cp->u.y);
|
1994-05-27 12:33:43 +00:00
|
|
|
break;
|
|
|
|
case ':':
|
|
|
|
case '}':
|
|
|
|
break;
|
|
|
|
case '=':
|
2003-11-04 13:09:16 +00:00
|
|
|
(void)fprintf(outfile, "%lu\n", linenum);
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
|
|
|
cp = cp->next;
|
|
|
|
} /* for all cp */
|
|
|
|
|
|
|
|
new: if (!nflag && !pd)
|
2007-06-12 12:17:25 +00:00
|
|
|
OUT();
|
1994-05-27 12:33:43 +00:00
|
|
|
flush_appends();
|
|
|
|
} /* for all lines */
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* TRUE if the address passed matches the current program state
|
|
|
|
* (lastline, linenumber, ps).
|
|
|
|
*/
|
2007-04-02 06:47:48 +00:00
|
|
|
#define MATCH(a) \
|
|
|
|
((a)->type == AT_RE ? regexec_e((a)->u.r, ps, 0, 1, psl) : \
|
|
|
|
(a)->type == AT_LINE ? linenum == (a)->u.l : lastline())
|
1994-05-27 12:33:43 +00:00
|
|
|
|
|
|
|
/*
|
2009-05-25 06:45:33 +00:00
|
|
|
* Return TRUE if the command applies to the current line. Sets the start
|
|
|
|
* line for process ranges. Interprets the non-select (``!'') flag.
|
1994-05-27 12:33:43 +00:00
|
|
|
*/
|
2015-01-13 00:04:22 +00:00
|
|
|
static inline int
|
2003-11-04 12:15:20 +00:00
|
|
|
applies(struct s_command *cp)
|
1994-05-27 12:33:43 +00:00
|
|
|
{
|
|
|
|
int r;
|
|
|
|
|
|
|
|
lastaddr = 0;
|
|
|
|
if (cp->a1 == NULL && cp->a2 == NULL)
|
|
|
|
r = 1;
|
|
|
|
else if (cp->a2)
|
2009-05-25 06:45:33 +00:00
|
|
|
if (cp->startline > 0) {
|
2014-07-30 14:46:39 +00:00
|
|
|
switch (cp->a2->type) {
|
|
|
|
case AT_RELLINE:
|
|
|
|
if (linenum - cp->startline <= cp->a2->u.l)
|
|
|
|
r = 1;
|
|
|
|
else {
|
|
|
|
cp->startline = 0;
|
|
|
|
r = 0;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
if (MATCH(cp->a2)) {
|
|
|
|
cp->startline = 0;
|
|
|
|
lastaddr = 1;
|
|
|
|
r = 1;
|
|
|
|
} else if (cp->a2->type == AT_LINE &&
|
|
|
|
linenum > cp->a2->u.l) {
|
|
|
|
/*
|
|
|
|
* We missed the 2nd address due to a
|
|
|
|
* branch, so just close the range and
|
|
|
|
* return false.
|
|
|
|
*/
|
|
|
|
cp->startline = 0;
|
|
|
|
r = 0;
|
|
|
|
} else
|
|
|
|
r = 1;
|
|
|
|
}
|
2015-01-27 18:58:24 +00:00
|
|
|
} else if (cp->a1 && MATCH(cp->a1)) {
|
1994-05-27 12:33:43 +00:00
|
|
|
/*
|
|
|
|
* If the second address is a number less than or
|
|
|
|
* equal to the line number first selected, only
|
|
|
|
* one line shall be selected.
|
|
|
|
* -- POSIX 1003.2
|
2009-05-25 06:45:33 +00:00
|
|
|
* Likewise if the relative second line address is zero.
|
1994-05-27 12:33:43 +00:00
|
|
|
*/
|
2009-05-25 06:45:33 +00:00
|
|
|
if ((cp->a2->type == AT_LINE &&
|
|
|
|
linenum >= cp->a2->u.l) ||
|
|
|
|
(cp->a2->type == AT_RELLINE && cp->a2->u.l == 0))
|
1994-05-27 12:33:43 +00:00
|
|
|
lastaddr = 1;
|
2009-05-25 06:45:33 +00:00
|
|
|
else {
|
|
|
|
cp->startline = linenum;
|
|
|
|
}
|
1994-05-27 12:33:43 +00:00
|
|
|
r = 1;
|
|
|
|
} else
|
|
|
|
r = 0;
|
|
|
|
else
|
|
|
|
r = MATCH(cp->a1);
|
|
|
|
return (cp->nonsel ? ! r : r);
|
|
|
|
}
|
|
|
|
|
2007-04-21 01:21:36 +00:00
|
|
|
/*
|
2007-06-12 12:05:24 +00:00
|
|
|
* Reset the sed processor to its initial state.
|
2007-04-21 01:21:36 +00:00
|
|
|
*/
|
|
|
|
void
|
2007-06-12 12:05:24 +00:00
|
|
|
resetstate(void)
|
2007-04-21 01:21:36 +00:00
|
|
|
{
|
|
|
|
struct s_command *cp;
|
|
|
|
|
2007-06-12 12:05:24 +00:00
|
|
|
/*
|
2009-05-25 06:45:33 +00:00
|
|
|
* Reset all in-range markers.
|
2007-06-12 12:05:24 +00:00
|
|
|
*/
|
2007-04-21 01:21:36 +00:00
|
|
|
for (cp = prog; cp; cp = cp->code == '{' ? cp->u.c : cp->next)
|
|
|
|
if (cp->a2)
|
2009-05-25 06:45:33 +00:00
|
|
|
cp->startline = 0;
|
2007-06-12 12:05:24 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Clear out the hold space.
|
|
|
|
*/
|
|
|
|
cspace(&HS, "", 0, REPLACE);
|
2007-04-21 01:21:36 +00:00
|
|
|
}
|
|
|
|
|
1994-05-27 12:33:43 +00:00
|
|
|
/*
|
|
|
|
* substitute --
|
|
|
|
* Do substitutions in the pattern space. Currently, we build a
|
|
|
|
* copy of the new pattern space in the substitute space structure
|
|
|
|
* and then swap them.
|
|
|
|
*/
|
|
|
|
static int
|
2003-11-04 12:15:20 +00:00
|
|
|
substitute(struct s_command *cp)
|
1994-05-27 12:33:43 +00:00
|
|
|
{
|
|
|
|
SPACE tspace;
|
|
|
|
regex_t *re;
|
2016-05-07 01:44:22 +00:00
|
|
|
regoff_t slen;
|
1994-05-27 12:33:43 +00:00
|
|
|
int lastempty, n;
|
|
|
|
char *s;
|
|
|
|
|
|
|
|
s = ps;
|
|
|
|
re = cp->u.s->re;
|
|
|
|
if (re == NULL) {
|
|
|
|
if (defpreg != NULL && cp->u.s->maxbref > defpreg->re_nsub) {
|
|
|
|
linenum = cp->u.s->linenum;
|
2008-02-09 09:12:02 +00:00
|
|
|
errx(1, "%lu: %s: \\%u not defined in the RE",
|
1997-08-11 07:21:08 +00:00
|
|
|
linenum, fname, cp->u.s->maxbref);
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
if (!regexec_e(re, s, 0, 0, psl))
|
|
|
|
return (0);
|
|
|
|
|
2003-11-04 12:16:47 +00:00
|
|
|
SS.len = 0; /* Clean substitute space. */
|
|
|
|
slen = psl;
|
|
|
|
n = cp->u.s->n;
|
1994-05-27 12:33:43 +00:00
|
|
|
lastempty = 1;
|
|
|
|
|
2016-05-07 01:44:22 +00:00
|
|
|
do {
|
|
|
|
/* Copy the leading retained string. */
|
|
|
|
if (n <= 1 && match[0].rm_so)
|
|
|
|
cspace(&SS, s, match[0].rm_so, APPEND);
|
1994-05-27 12:33:43 +00:00
|
|
|
|
2016-05-07 01:44:22 +00:00
|
|
|
/* Skip zero-length matches right after other matches. */
|
|
|
|
if (lastempty || match[0].rm_so ||
|
|
|
|
match[0].rm_so != match[0].rm_eo) {
|
|
|
|
if (n <= 1) {
|
|
|
|
/* Want this match: append replacement. */
|
|
|
|
regsub(&SS, s, cp->u.s->new);
|
|
|
|
if (n == 1)
|
|
|
|
n = -1;
|
1994-05-27 12:33:43 +00:00
|
|
|
} else {
|
2016-05-07 01:44:22 +00:00
|
|
|
/* Want a later match: append original. */
|
|
|
|
if (match[0].rm_eo)
|
|
|
|
cspace(&SS, s, match[0].rm_eo, APPEND);
|
|
|
|
n--;
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
|
|
|
}
|
2016-05-07 01:44:22 +00:00
|
|
|
|
|
|
|
/* Move past this match. */
|
1994-05-27 12:33:43 +00:00
|
|
|
s += match[0].rm_eo;
|
|
|
|
slen -= match[0].rm_eo;
|
2016-05-07 01:44:22 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* After a zero-length match, advance one byte,
|
|
|
|
* and at the end of the line, terminate.
|
|
|
|
*/
|
|
|
|
if (match[0].rm_so == match[0].rm_eo) {
|
|
|
|
if (*s == '\0' || *s == '\n')
|
|
|
|
slen = -1;
|
|
|
|
else
|
|
|
|
slen--;
|
|
|
|
if (*s != '\0')
|
|
|
|
cspace(&SS, s++, 1, APPEND);
|
|
|
|
lastempty = 1;
|
|
|
|
} else
|
|
|
|
lastempty = 0;
|
|
|
|
|
|
|
|
} while (n >= 0 && slen >= 0 && regexec_e(re, s, REG_NOTBOL, 0, slen));
|
|
|
|
|
|
|
|
/* Did not find the requested number of matches. */
|
|
|
|
if (n > 1)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
/* Copy the trailing retained string. */
|
|
|
|
if (slen > 0)
|
1994-05-27 12:33:43 +00:00
|
|
|
cspace(&SS, s, slen, APPEND);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Swap the substitute space and the pattern space, and make sure
|
|
|
|
* that any leftover pointers into stdio memory get lost.
|
|
|
|
*/
|
|
|
|
tspace = PS;
|
|
|
|
PS = SS;
|
2014-08-08 17:29:01 +00:00
|
|
|
psanl = tspace.append_newline;
|
1994-05-27 12:33:43 +00:00
|
|
|
SS = tspace;
|
|
|
|
SS.space = SS.back;
|
|
|
|
|
|
|
|
/* Handle the 'p' flag. */
|
|
|
|
if (cp->u.s->p)
|
2007-06-12 12:17:25 +00:00
|
|
|
OUT();
|
1994-05-27 12:33:43 +00:00
|
|
|
|
|
|
|
/* Handle the 'w' flag. */
|
|
|
|
if (cp->u.s->wfile && !pd) {
|
|
|
|
if (cp->u.s->wfd == -1 && (cp->u.s->wfd = open(cp->u.s->wfile,
|
|
|
|
O_WRONLY|O_APPEND|O_CREAT|O_TRUNC, DEFFILEMODE)) == -1)
|
1997-08-11 07:21:08 +00:00
|
|
|
err(1, "%s", cp->u.s->wfile);
|
2008-02-09 09:12:02 +00:00
|
|
|
if (write(cp->u.s->wfd, ps, psl) != (ssize_t)psl ||
|
2002-06-22 01:42:26 +00:00
|
|
|
write(cp->u.s->wfd, "\n", 1) != 1)
|
1997-08-11 07:21:08 +00:00
|
|
|
err(1, "%s", cp->u.s->wfile);
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
2004-07-14 10:06:22 +00:00
|
|
|
/*
|
|
|
|
* do_tr --
|
|
|
|
* Perform translation ('y' command) in the pattern space.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
do_tr(struct s_tr *y)
|
|
|
|
{
|
|
|
|
SPACE tmp;
|
|
|
|
char c, *p;
|
|
|
|
size_t clen, left;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if (MB_CUR_MAX == 1) {
|
|
|
|
/*
|
|
|
|
* Single-byte encoding: perform in-place translation
|
|
|
|
* of the pattern space.
|
|
|
|
*/
|
|
|
|
for (p = ps; p < &ps[psl]; p++)
|
|
|
|
*p = y->bytetab[(u_char)*p];
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* Multi-byte encoding: perform translation into the
|
|
|
|
* translation space, then swap the translation and
|
|
|
|
* pattern spaces.
|
|
|
|
*/
|
|
|
|
/* Clean translation space. */
|
|
|
|
YS.len = 0;
|
|
|
|
for (p = ps, left = psl; left > 0; p += clen, left -= clen) {
|
|
|
|
if ((c = y->bytetab[(u_char)*p]) != '\0') {
|
|
|
|
cspace(&YS, &c, 1, APPEND);
|
|
|
|
clen = 1;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
for (i = 0; i < y->nmultis; i++)
|
|
|
|
if (left >= y->multis[i].fromlen &&
|
|
|
|
memcmp(p, y->multis[i].from,
|
|
|
|
y->multis[i].fromlen) == 0)
|
|
|
|
break;
|
|
|
|
if (i < y->nmultis) {
|
|
|
|
cspace(&YS, y->multis[i].to,
|
|
|
|
y->multis[i].tolen, APPEND);
|
|
|
|
clen = y->multis[i].fromlen;
|
|
|
|
} else {
|
|
|
|
cspace(&YS, p, 1, APPEND);
|
|
|
|
clen = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* Swap the translation space and the pattern space. */
|
|
|
|
tmp = PS;
|
|
|
|
PS = YS;
|
2014-08-08 17:29:01 +00:00
|
|
|
psanl = tmp.append_newline;
|
2004-07-14 10:06:22 +00:00
|
|
|
YS = tmp;
|
|
|
|
YS.space = YS.back;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
1994-05-27 12:33:43 +00:00
|
|
|
/*
|
|
|
|
* Flush append requests. Always called before reading a line,
|
|
|
|
* therefore it also resets the substitution done (sdone) flag.
|
|
|
|
*/
|
|
|
|
static void
|
2003-11-04 12:15:20 +00:00
|
|
|
flush_appends(void)
|
1994-05-27 12:33:43 +00:00
|
|
|
{
|
|
|
|
FILE *f;
|
|
|
|
int count, i;
|
|
|
|
char buf[8 * 1024];
|
|
|
|
|
1995-05-30 06:41:30 +00:00
|
|
|
for (i = 0; i < appendx; i++)
|
1994-05-27 12:33:43 +00:00
|
|
|
switch (appends[i].type) {
|
|
|
|
case AP_STRING:
|
1995-05-30 06:41:30 +00:00
|
|
|
fwrite(appends[i].s, sizeof(char), appends[i].len,
|
2003-11-04 13:09:16 +00:00
|
|
|
outfile);
|
1994-05-27 12:33:43 +00:00
|
|
|
break;
|
|
|
|
case AP_FILE:
|
|
|
|
/*
|
|
|
|
* Read files probably shouldn't be cached. Since
|
|
|
|
* it's not an error to read a non-existent file,
|
|
|
|
* it's possible that another program is interacting
|
2002-05-16 02:19:14 +00:00
|
|
|
* with the sed script through the filesystem. It
|
1994-05-27 12:33:43 +00:00
|
|
|
* would be truly bizarre, but possible. It's probably
|
|
|
|
* not that big a performance win, anyhow.
|
|
|
|
*/
|
|
|
|
if ((f = fopen(appends[i].s, "r")) == NULL)
|
|
|
|
break;
|
1997-08-11 07:21:08 +00:00
|
|
|
while ((count = fread(buf, sizeof(char), sizeof(buf), f)))
|
2003-11-04 13:09:16 +00:00
|
|
|
(void)fwrite(buf, sizeof(char), count, outfile);
|
1994-05-27 12:33:43 +00:00
|
|
|
(void)fclose(f);
|
|
|
|
break;
|
|
|
|
}
|
2003-11-04 13:09:16 +00:00
|
|
|
if (ferror(outfile))
|
|
|
|
errx(1, "%s: %s", outfname, strerror(errno ? errno : EIO));
|
1994-05-27 12:33:43 +00:00
|
|
|
appendx = sdone = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
2004-07-13 04:35:43 +00:00
|
|
|
lputs(char *s, size_t len)
|
1994-05-27 12:33:43 +00:00
|
|
|
{
|
2004-07-13 04:35:43 +00:00
|
|
|
static const char escapes[] = "\\\a\b\f\r\t\v";
|
|
|
|
int c, col, width;
|
2008-02-09 09:12:02 +00:00
|
|
|
const char *p;
|
1994-05-27 12:33:43 +00:00
|
|
|
struct winsize win;
|
|
|
|
static int termwidth = -1;
|
2004-07-13 04:35:43 +00:00
|
|
|
size_t clen, i;
|
|
|
|
wchar_t wc;
|
|
|
|
mbstate_t mbs;
|
1994-05-27 12:33:43 +00:00
|
|
|
|
2003-11-04 13:09:16 +00:00
|
|
|
if (outfile != stdout)
|
|
|
|
termwidth = 60;
|
1999-04-25 22:37:58 +00:00
|
|
|
if (termwidth == -1) {
|
2002-06-04 10:00:08 +00:00
|
|
|
if ((p = getenv("COLUMNS")) && *p != '\0')
|
1994-05-27 12:33:43 +00:00
|
|
|
termwidth = atoi(p);
|
|
|
|
else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) == 0 &&
|
|
|
|
win.ws_col > 0)
|
|
|
|
termwidth = win.ws_col;
|
|
|
|
else
|
|
|
|
termwidth = 60;
|
1999-04-25 22:37:58 +00:00
|
|
|
}
|
2008-02-09 09:12:02 +00:00
|
|
|
if (termwidth <= 0)
|
|
|
|
termwidth = 1;
|
1994-05-27 12:33:43 +00:00
|
|
|
|
2004-07-13 04:35:43 +00:00
|
|
|
memset(&mbs, 0, sizeof(mbs));
|
|
|
|
col = 0;
|
|
|
|
while (len != 0) {
|
|
|
|
clen = mbrtowc(&wc, s, len, &mbs);
|
|
|
|
if (clen == 0)
|
|
|
|
clen = 1;
|
|
|
|
if (clen == (size_t)-1 || clen == (size_t)-2) {
|
|
|
|
wc = (unsigned char)*s;
|
|
|
|
clen = 1;
|
|
|
|
memset(&mbs, 0, sizeof(mbs));
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
2004-07-13 04:35:43 +00:00
|
|
|
if (wc == '\n') {
|
|
|
|
if (col + 1 >= termwidth)
|
|
|
|
fprintf(outfile, "\\\n");
|
|
|
|
fputc('$', outfile);
|
|
|
|
fputc('\n', outfile);
|
|
|
|
col = 0;
|
|
|
|
} else if (iswprint(wc)) {
|
|
|
|
width = wcwidth(wc);
|
|
|
|
if (col + width >= termwidth) {
|
|
|
|
fprintf(outfile, "\\\n");
|
|
|
|
col = 0;
|
|
|
|
}
|
|
|
|
fwrite(s, 1, clen, outfile);
|
|
|
|
col += width;
|
|
|
|
} else if (wc != L'\0' && (c = wctob(wc)) != EOF &&
|
|
|
|
(p = strchr(escapes, c)) != NULL) {
|
|
|
|
if (col + 2 >= termwidth) {
|
|
|
|
fprintf(outfile, "\\\n");
|
|
|
|
col = 0;
|
|
|
|
}
|
|
|
|
fprintf(outfile, "\\%c", "\\abfrtv"[p - escapes]);
|
|
|
|
col += 2;
|
2002-06-22 03:00:52 +00:00
|
|
|
} else {
|
2008-02-09 09:12:02 +00:00
|
|
|
if (col + 4 * clen >= (unsigned)termwidth) {
|
2004-07-13 04:35:43 +00:00
|
|
|
fprintf(outfile, "\\\n");
|
|
|
|
col = 0;
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
2004-07-13 04:35:43 +00:00
|
|
|
for (i = 0; i < clen; i++)
|
|
|
|
fprintf(outfile, "\\%03o",
|
|
|
|
(int)(unsigned char)s[i]);
|
|
|
|
col += 4 * clen;
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
2004-07-13 04:35:43 +00:00
|
|
|
s += clen;
|
|
|
|
len -= clen;
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
2004-07-13 04:35:43 +00:00
|
|
|
if (col + 1 >= termwidth)
|
|
|
|
fprintf(outfile, "\\\n");
|
2003-11-04 13:09:16 +00:00
|
|
|
(void)fputc('$', outfile);
|
|
|
|
(void)fputc('\n', outfile);
|
|
|
|
if (ferror(outfile))
|
|
|
|
errx(1, "%s: %s", outfname, strerror(errno ? errno : EIO));
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
|
|
|
|
2015-01-08 16:33:15 +00:00
|
|
|
static int
|
2003-11-04 12:15:20 +00:00
|
|
|
regexec_e(regex_t *preg, const char *string, int eflags, int nomatch,
|
|
|
|
size_t slen)
|
1994-05-27 12:33:43 +00:00
|
|
|
{
|
|
|
|
int eval;
|
1995-05-30 06:41:30 +00:00
|
|
|
|
1994-05-27 12:33:43 +00:00
|
|
|
if (preg == NULL) {
|
|
|
|
if (defpreg == NULL)
|
1997-08-11 07:21:08 +00:00
|
|
|
errx(1, "first RE may not be empty");
|
1994-05-27 12:33:43 +00:00
|
|
|
} else
|
|
|
|
defpreg = preg;
|
|
|
|
|
2002-06-22 01:42:26 +00:00
|
|
|
/* Set anchors */
|
1994-05-27 12:33:43 +00:00
|
|
|
match[0].rm_so = 0;
|
|
|
|
match[0].rm_eo = slen;
|
1995-05-30 06:41:30 +00:00
|
|
|
|
1994-05-27 12:33:43 +00:00
|
|
|
eval = regexec(defpreg, string,
|
|
|
|
nomatch ? 0 : maxnsub + 1, match, eflags | REG_STARTEND);
|
|
|
|
switch(eval) {
|
|
|
|
case 0:
|
|
|
|
return (1);
|
|
|
|
case REG_NOMATCH:
|
|
|
|
return (0);
|
|
|
|
}
|
1997-08-11 07:21:08 +00:00
|
|
|
errx(1, "RE error: %s", strregerror(eval, defpreg));
|
1994-05-27 12:33:43 +00:00
|
|
|
/* NOTREACHED */
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* regsub - perform substitutions after a regexp match
|
|
|
|
* Based on a routine by Henry Spencer
|
|
|
|
*/
|
|
|
|
static void
|
2003-11-04 12:15:20 +00:00
|
|
|
regsub(SPACE *sp, char *string, char *src)
|
1994-05-27 12:33:43 +00:00
|
|
|
{
|
2001-12-12 23:20:16 +00:00
|
|
|
int len, no;
|
|
|
|
char c, *dst;
|
1994-05-27 12:33:43 +00:00
|
|
|
|
|
|
|
#define NEEDSP(reqlen) \
|
2003-11-02 23:20:24 +00:00
|
|
|
/* XXX What is the +1 for? */ \
|
|
|
|
if (sp->len + (reqlen) + 1 >= sp->blen) { \
|
1994-05-27 12:33:43 +00:00
|
|
|
sp->blen += (reqlen) + 1024; \
|
2001-07-24 14:05:21 +00:00
|
|
|
if ((sp->space = sp->back = realloc(sp->back, sp->blen)) \
|
|
|
|
== NULL) \
|
|
|
|
err(1, "realloc"); \
|
1994-05-27 12:33:43 +00:00
|
|
|
dst = sp->space + sp->len; \
|
|
|
|
}
|
|
|
|
|
|
|
|
dst = sp->space + sp->len;
|
|
|
|
while ((c = *src++) != '\0') {
|
|
|
|
if (c == '&')
|
|
|
|
no = 0;
|
1996-08-11 17:46:35 +00:00
|
|
|
else if (c == '\\' && isdigit((unsigned char)*src))
|
1994-05-27 12:33:43 +00:00
|
|
|
no = *src++ - '0';
|
|
|
|
else
|
|
|
|
no = -1;
|
|
|
|
if (no < 0) { /* Ordinary character. */
|
2003-11-04 12:16:47 +00:00
|
|
|
if (c == '\\' && (*src == '\\' || *src == '&'))
|
|
|
|
c = *src++;
|
1994-05-27 12:33:43 +00:00
|
|
|
NEEDSP(1);
|
2003-11-04 12:16:47 +00:00
|
|
|
*dst++ = c;
|
1994-05-27 12:33:43 +00:00
|
|
|
++sp->len;
|
2003-11-04 12:16:47 +00:00
|
|
|
} else if (match[no].rm_so != -1 && match[no].rm_eo != -1) {
|
1994-05-27 12:33:43 +00:00
|
|
|
len = match[no].rm_eo - match[no].rm_so;
|
|
|
|
NEEDSP(len);
|
|
|
|
memmove(dst, string + match[no].rm_so, len);
|
|
|
|
dst += len;
|
|
|
|
sp->len += len;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
NEEDSP(1);
|
|
|
|
*dst = '\0';
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2007-03-31 09:08:22 +00:00
|
|
|
* cspace --
|
|
|
|
* Concatenate space: append the source space to the destination space,
|
|
|
|
* allocating new space as necessary.
|
1994-05-27 12:33:43 +00:00
|
|
|
*/
|
|
|
|
void
|
2003-11-04 12:15:20 +00:00
|
|
|
cspace(SPACE *sp, const char *p, size_t len, enum e_spflag spflag)
|
1994-05-27 12:33:43 +00:00
|
|
|
{
|
|
|
|
size_t tlen;
|
|
|
|
|
|
|
|
/* Make sure SPACE has enough memory and ramp up quickly. */
|
|
|
|
tlen = sp->len + len + 1;
|
|
|
|
if (tlen > sp->blen) {
|
|
|
|
sp->blen = tlen + 1024;
|
2001-07-24 14:05:21 +00:00
|
|
|
if ((sp->space = sp->back = realloc(sp->back, sp->blen)) ==
|
|
|
|
NULL)
|
|
|
|
err(1, "realloc");
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (spflag == REPLACE)
|
|
|
|
sp->len = 0;
|
|
|
|
|
|
|
|
memmove(sp->space + sp->len, p, len);
|
|
|
|
|
|
|
|
sp->space[sp->len += len] = '\0';
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Close all cached opened files and report any errors
|
|
|
|
*/
|
|
|
|
void
|
2003-11-04 12:15:20 +00:00
|
|
|
cfclose(struct s_command *cp, struct s_command *end)
|
1994-05-27 12:33:43 +00:00
|
|
|
{
|
|
|
|
|
|
|
|
for (; cp != end; cp = cp->next)
|
|
|
|
switch(cp->code) {
|
|
|
|
case 's':
|
|
|
|
if (cp->u.s->wfd != -1 && close(cp->u.s->wfd))
|
1997-08-11 07:21:08 +00:00
|
|
|
err(1, "%s", cp->u.s->wfile);
|
1994-05-27 12:33:43 +00:00
|
|
|
cp->u.s->wfd = -1;
|
|
|
|
break;
|
|
|
|
case 'w':
|
|
|
|
if (cp->u.fd != -1 && close(cp->u.fd))
|
1997-08-11 07:21:08 +00:00
|
|
|
err(1, "%s", cp->t);
|
1994-05-27 12:33:43 +00:00
|
|
|
cp->u.fd = -1;
|
|
|
|
break;
|
|
|
|
case '{':
|
|
|
|
cfclose(cp->u.c, cp->next);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|