sanchayanmaity/minix
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

Porting grep from NetBSD

Browse source 
Change-Id: I6fa9e3c0a4edc4d3ff292dc5c96ac16b34d7c792
This commit is contained in:
Sky Liu 2014-09-13 22:59:14 +08:00 committed by Lionel Sambuc
parent 831337191b
commit ca78167b44
30 changed files with 2354 additions and 1783 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
minix/commands/Makefile
View file

@ -10,7 +10,7 @@ SUBDIR= add_route arp at backup btrace \
dhrystone diff diskctl \
eject fbdctl \
find fix format fsck.mfs \
gcov-pull grep host \
gcov-pull host \
hostaddr ifconfig ifdef \
intr ipcrm ipcs irdpd isoread \
loadkeys loadramdisk logger look lp \

23
minix/commands/grep/Makefile
View file

@ -1,23 +0,0 @@
# $OpenBSD: Makefile,v 1.5 2003/06/23 07:52:18 deraadt Exp $
PROG= grep
SRCS= binary.c file.c grep.c mmfile.c queue.c util.c
LINKS= ${BINDIR}/grep ${BINDIR}/egrep \
${BINDIR}/grep ${BINDIR}/fgrep \
${BINDIR}/grep ${BINDIR}/zgrep \
${BINDIR}/grep ${BINDIR}/zegrep \
${BINDIR}/grep ${BINDIR}/zfgrep \
OPSYS!= uname
MLINKS= grep.1 egrep.1 \
grep.1 fgrep.1 \
grep.1 zgrep.1 \
grep.1 zegrep.1 \
grep.1 zfgrep.1
LDADD= -lz
DPADD= ${LIBZ}
CFLAGS+= -Wall
.include <bsd.prog.mk>

96
minix/commands/grep/binary.c
View file

@ -1,96 +0,0 @@
/* $OpenBSD: binary.c,v 1.14 2005/02/07 08:47:18 otto Exp $ */
/*-
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* 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 AUTHOR 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 AUTHOR 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.
*/
#include <ctype.h>
#include <err.h>
#include <stdio.h>
#include "grep.h"
#define isbinary(ch) (!isprint((ch)) && !isspace((ch)) && (ch) != '\b')
int
bin_file(FILE *f)
{
unsigned char buf[BUFSIZ];
size_t i, m;
int ret = 0;
if (fseek(f, 0L, SEEK_SET) == -1)
return 0;
if ((m = fread(buf, 1, BUFSIZ, f)) == 0)
return 0;
for (i = 0; i < m; i++)
if (isbinary(buf[i])) {
ret = 1;
break;
}
rewind(f);
return ret;
}
#ifndef NOZ
int
gzbin_file(gzFile *f)
{
unsigned char buf[BUFSIZ];
int i, m;
int ret = 0;
if (gzseek(f, (z_off_t)0, SEEK_SET) == -1)
return 0;
if ((m = gzread(f, buf, BUFSIZ)) <= 0)
return 0;
for (i = 0; i < m; i++)
if (isbinary(buf[i])) {
ret = 1;
break;
}
if (gzrewind(f) != 0)
err(1, "gzbin_file");
return ret;
}
#endif
int
mmbin_file(mmf_t *f)
{
int i;
/* XXX knows too much about mmf internals */
for (i = 0; i < BUFSIZ && i < f->len; i++)
if (isbinary(f->base[i]))
return 1;
return 0;
}

226
minix/commands/grep/file.c
View file

@ -1,226 +0,0 @@
/* $OpenBSD: file.c,v 1.9 2006/02/09 09:54:46 otto Exp $ */
/*-
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* 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 AUTHOR 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 AUTHOR 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.
*/
#include <sys/param.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "grep.h"
static char fname[MAXPATHLEN];
#ifndef NOZ
static char *lnbuf;
static size_t lnbuflen;
#endif
#define FILE_STDIO 0
#define FILE_MMAP 1
#define FILE_GZIP 2
struct file {
int type;
int noseek;
FILE *f;
mmf_t *mmf;
#ifndef NOZ
gzFile *gzf;
#endif
};
#ifndef NOZ
static char *
gzfgetln(gzFile *f, size_t *len)
{
size_t n;
int c;
for (n = 0; ; ++n) {
c = gzgetc(f);
if (c == -1) {
const char *gzerrstr;
int gzerr;
if (gzeof(f))
break;
gzerrstr = gzerror(f, &gzerr);
if (gzerr == Z_ERRNO)
err(2, "%s", fname);
else
errx(2, "%s: %s", fname, gzerrstr);
}
if (n >= lnbuflen) {
lnbuflen *= 2;
lnbuf = grep_realloc(lnbuf, ++lnbuflen);
}
if (c == '\n')
break;
lnbuf[n] = c;
}
if (gzeof(f) && n == 0)
return NULL;
*len = n;
return lnbuf;
}
#endif
file_t *
grep_fdopen(int fd, char *mode)
{
file_t *f;
if (fd == STDIN_FILENO)
snprintf(fname, sizeof fname, "(standard input)");
else
snprintf(fname, sizeof fname, "(fd %d)", fd);
f = grep_malloc(sizeof *f);
#ifndef NOZ
if (Zflag) {
f->type = FILE_GZIP;
f->noseek = lseek(fd, 0L, SEEK_SET) == -1;
if ((f->gzf = gzdopen(fd, mode)) != NULL)
return f;
} else
#endif
{
f->type = FILE_STDIO;
f->noseek = isatty(fd);
if ((f->f = fdopen(fd, mode)) != NULL)
return f;
}
free(f);
return NULL;
}
file_t *
grep_open(char *path, char *mode)
{
file_t *f;
snprintf(fname, sizeof fname, "%s", path);
f = grep_malloc(sizeof *f);
f->noseek = 0;
#ifndef NOZ
if (Zflag) {
f->type = FILE_GZIP;
if ((f->gzf = gzopen(fname, mode)) != NULL)
return f;
} else
#endif
{
#ifdef FILE_MMAP
/* try mmap first; if it fails, try stdio */
if ((f->mmf = mmopen(fname, mode)) != NULL) {
f->type = FILE_MMAP;
return f;
}
#endif
f->type = FILE_STDIO;
if ((f->f = fopen(path, mode)) != NULL)
return f;
}
free(f);
return NULL;
}
int
grep_bin_file(file_t *f)
{
if (f->noseek)
return 0;
switch (f->type) {
case FILE_STDIO:
return bin_file(f->f);
#ifdef FILE_MMAP
case FILE_MMAP:
return mmbin_file(f->mmf);
#endif
#ifndef NOZ
case FILE_GZIP:
return gzbin_file(f->gzf);
#endif
default:
/* can't happen */
errx(2, "invalid file type");
}
}
char *
grep_fgetln(file_t *f, size_t *l)
{
switch (f->type) {
case FILE_STDIO:
return fgetln(f->f, l);
#ifdef FILE_MMAP
case FILE_MMAP:
return mmfgetln(f->mmf, l);
#endif
#ifndef NOZ
case FILE_GZIP:
return gzfgetln(f->gzf, l);
#endif
default:
/* can't happen */
errx(2, "invalid file type");
}
}
void
grep_close(file_t *f)
{
switch (f->type) {
case FILE_STDIO:
fclose(f->f);
break;
#ifdef FILE_MMAP
case FILE_MMAP:
mmclose(f->mmf);
break;
#endif
#ifndef NOZ
case FILE_GZIP:
gzclose(f->gzf);
break;
#endif
default:
/* can't happen */
errx(2, "invalid file type");
}
free(f);
}

488
minix/commands/grep/grep.c
View file

@ -1,488 +0,0 @@
/* $OpenBSD: grep.c,v 1.38 2007/02/13 21:48:20 kili Exp $ */
/*-
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* 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 AUTHOR 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 AUTHOR 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.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/queue.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <getopt.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "grep.h"
/* Flags passed to regcomp() and regexec() */
int cflags;
int eflags = REG_STARTEND;
int matchall; /* shortcut */
int patterns, pattern_sz;
char **pattern;
regex_t *r_pattern;
fastgrep_t *fg_pattern;
/* For regex errors */
char re_error[RE_ERROR_BUF + 1];
/* Command-line flags */
int Aflag; /* -A x: print x lines trailing each match */
int Bflag; /* -B x: print x lines leading each match */
int Eflag; /* -E: interpret pattern as extended regexp */
int Fflag; /* -F: interpret pattern as list of fixed strings */
int Gflag; /* -G: interpret pattern as basic regexp */
int Hflag; /* -H: if -R, follow explicitly listed symlinks */
int Lflag; /* -L: only show names of files with no matches */
int Pflag; /* -P: if -R, no symlinks are followed */
int Rflag; /* -R: recursively search directory trees */
int Sflag; /* -S: if -R, follow all symlinks */
#ifndef NOZ
int Zflag; /* -Z: decompress input before processing */
#endif
int bflag; /* -b: show block numbers for each match */
int cflag; /* -c: only show a count of matching lines */
int hflag; /* -h: don't print filename headers */
int iflag; /* -i: ignore case */
int lflag; /* -l: only show names of files with matches */
int nflag; /* -n: show line numbers in front of matching lines */
int oflag; /* -o: always print file name */
int qflag; /* -q: quiet mode (don't output anything) */
int sflag; /* -s: silent mode (ignore errors) */
int vflag; /* -v: only show non-matching lines */
int wflag; /* -w: pattern must start and end on word boundaries */
int xflag; /* -x: pattern must match entire line */
int lbflag; /* --line-buffered */
int binbehave = BIN_FILE_BIN;
enum {
BIN_OPT = CHAR_MAX + 1,
HELP_OPT,
MMAP_OPT,
LINEBUF_OPT
};
/* Housekeeping */
int first; /* flag whether or not this is our first match */
int tail; /* lines left to print */
struct patfile {
const char *pf_file;
SLIST_ENTRY(patfile) pf_next;
};
SLIST_HEAD(, patfile) patfilelh;
static void
usage(void)
{
fprintf(stderr,
#ifdef NOZ
"usage: %s [-abcEFGHhIiLlnoPqRSsUVvwx] [-A num] [-B num] [-C[num]]\n"
#else
"usage: %s [-abcEFGHhIiLlnoPqRSsUVvwxZ] [-A num] [-B num] [-C[num]]\n"
#endif
"\t[-e pattern] [-f file] [--binary-files=value] [--context[=num]]\n"
"\t[--line-buffered] [pattern] [file ...]\n", getprogname());
exit(2);
}
#ifdef NOZ
static char *optstr = "0123456789A:B:CEFGHILPSRUVabce:f:hilnoqrsuvwxy";
#else
static char *optstr = "0123456789A:B:CEFGHILPSRUVZabce:f:hilnoqrsuvwxy";
#endif
struct option long_options[] =
{
{"binary-files", required_argument, NULL, BIN_OPT},
{"help", no_argument, NULL, HELP_OPT},
{"mmap", no_argument, NULL, MMAP_OPT},
{"line-buffered", no_argument, NULL, LINEBUF_OPT},
{"after-context", required_argument, NULL, 'A'},
{"before-context", required_argument, NULL, 'B'},
{"context", optional_argument, NULL, 'C'},
{"devices", required_argument, NULL, 'D'},
{"extended-regexp", no_argument, NULL, 'E'},
{"fixed-strings", no_argument, NULL, 'F'},
{"basic-regexp", no_argument, NULL, 'G'},
{"binary", no_argument, NULL, 'U'},
{"version", no_argument, NULL, 'V'},
{"text", no_argument, NULL, 'a'},
{"byte-offset", no_argument, NULL, 'b'},
{"count", no_argument, NULL, 'c'},
{"regexp", required_argument, NULL, 'e'},
{"file", required_argument, NULL, 'f'},
{"no-filename", no_argument, NULL, 'h'},
{"ignore-case", no_argument, NULL, 'i'},
{"files-without-match", no_argument, NULL, 'L'},
{"files-with-matches", no_argument, NULL, 'l'},
{"line-number", no_argument, NULL, 'n'},
{"quiet", no_argument, NULL, 'q'},
{"silent", no_argument, NULL, 'q'},
{"recursive", no_argument, NULL, 'r'},
{"no-messages", no_argument, NULL, 's'},
{"revert-match", no_argument, NULL, 'v'},
{"word-regexp", no_argument, NULL, 'w'},
{"line-regexp", no_argument, NULL, 'x'},
{"unix-byte-offsets", no_argument, NULL, 'u'},
#ifndef NOZ
{"decompress", no_argument, NULL, 'Z'},
#endif
{NULL, no_argument, NULL, 0}
};
static void
add_pattern(char *pat, size_t len)
{
if (!xflag && (len == 0 || matchall)) {
matchall = 1;
return;
}
if (patterns == pattern_sz) {
pattern_sz *= 2;
pattern = grep_realloc(pattern, ++pattern_sz * sizeof(*pattern));
}
if (len > 0 && pat[len - 1] == '\n')
--len;
/* pat may not be NUL-terminated */
if (wflag && !Fflag) {
int bol = 0, eol = 0, extra;
if (pat[0] == '^')
bol = 1;
if (len > 0 && pat[len - 1] == '$')
eol = 1;
extra = Eflag ? 2 : 4;
pattern[patterns] = grep_malloc(len + 15 + extra);
snprintf(pattern[patterns], len + 15 + extra,
"%s[[:<:]]%s%.*s%s[[:>:]]%s",
bol ? "^" : "",
Eflag ? "(" : "\\(",
(int)len - bol - eol, pat + bol,
Eflag ? ")" : "\\)",
eol ? "$" : "");
len += 14 + extra;
} else {
pattern[patterns] = grep_malloc(len + 1);
memcpy(pattern[patterns], pat, len);
pattern[patterns][len] = '\0';
}
++patterns;
}
static void
add_patterns(char *pats)
{
char *nl;
while ((nl = strchr(pats, '\n')) != NULL) {
add_pattern(pats, nl - pats);
pats = nl + 1;
}
add_pattern(pats, strlen(pats));
}
static void
read_patterns(const char *fn)
{
FILE *f;
char *line;
size_t len;
if ((f = fopen(fn, "r")) == NULL)
err(2, "%s", fn);
while ((line = fgetln(f, &len)) != NULL)
add_pattern(line, *line == '\n' ? 0 : len);
if (ferror(f))
err(2, "%s", fn);
fclose(f);
}
int
main(int argc, char *argv[])
{
int c, lastc, prevoptind, newarg, i, needpattern;
struct patfile *patfile, *pf_next;
long l;
char *ep;
SLIST_INIT(&patfilelh);
switch (getprogname()[0]) {
case 'e':
Eflag++;
break;
case 'f':
Fflag++;
break;
case 'g':
Gflag++;
break;
#ifndef NOZ
case 'z':
Zflag++;
switch(getprogname()[1]) {
case 'e':
Eflag++;
break;
case 'f':
Fflag++;
break;
case 'g':
Gflag++;
break;
}
break;
#endif
}
lastc = '\0';
newarg = 1;
prevoptind = 1;
needpattern = 1;
while ((c = getopt_long(argc, argv, optstr,
long_options, NULL)) != -1) {
switch (c) {
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
if (newarg || !isdigit(lastc))
Aflag = 0;
else if (Aflag > INT_MAX / 10)
errx(2, "context out of range");
Aflag = Bflag = (Aflag * 10) + (c - '0');
break;
case 'A':
case 'B':
l = strtol(optarg, &ep, 10);
if (ep == optarg || *ep != '\0' ||
l <= 0 || l >= INT_MAX)
errx(2, "context out of range");
if (c == 'A')
Aflag = (int)l;
else
Bflag = (int)l;
break;
case 'C':
if (optarg == NULL)
Aflag = Bflag = 2;
else {
l = strtol(optarg, &ep, 10);
if (ep == optarg || *ep != '\0' ||
l <= 0 || l >= INT_MAX)
errx(2, "context out of range");
Aflag = Bflag = (int)l;
}
break;
case 'E':
Fflag = Gflag = 0;
Eflag++;
break;
case 'F':
Eflag = Gflag = 0;
Fflag++;
break;
case 'G':
Eflag = Fflag = 0;
Gflag++;
break;
case 'H':
Hflag++;
break;
case 'I':
binbehave = BIN_FILE_SKIP;
break;
case 'L':
lflag = 0;
Lflag = qflag = 1;
break;
case 'P':
Pflag++;
break;
case 'S':
Sflag++;
break;
case 'R':
case 'r':
Rflag++;
oflag++;
break;
case 'U':
binbehave = BIN_FILE_BIN;
break;
case 'V':
fprintf(stderr, "grep version %u.%u\n", VER_MAJ, VER_MIN);
exit(0);
break;
#ifndef NOZ
case 'Z':
Zflag++;
break;
#endif
case 'a':
binbehave = BIN_FILE_TEXT;
break;
case 'b':
bflag = 1;
break;
case 'c':
cflag = 1;
break;
case 'e':
add_patterns(optarg);
needpattern = 0;
break;
case 'f':
patfile = grep_malloc(sizeof(*patfile));
patfile->pf_file = optarg;
SLIST_INSERT_HEAD(&patfilelh, patfile, pf_next);
needpattern = 0;
break;
case 'h':
oflag = 0;
hflag = 1;
break;
case 'i':
case 'y':
iflag = 1;
cflags |= REG_ICASE;
break;
case 'l':
Lflag = 0;
lflag = qflag = 1;
break;
case 'n':
nflag = 1;
break;
case 'o':
hflag = 0;
oflag = 1;
break;
case 'q':
qflag = 1;
break;
case 's':
sflag = 1;
break;
case 'v':
vflag = 1;
break;
case 'w':
wflag = 1;
break;
case 'x':
xflag = 1;
break;
case BIN_OPT:
if (strcmp("binary", optarg) == 0)
binbehave = BIN_FILE_BIN;
else if (strcmp("without-match", optarg) == 0)
binbehave = BIN_FILE_SKIP;
else if (strcmp("text", optarg) == 0)
binbehave = BIN_FILE_TEXT;
else
errx(2, "Unknown binary-files option");
break;
case 'u':
case MMAP_OPT:
/* default, compatibility */
break;
case LINEBUF_OPT:
lbflag = 1;
break;
case HELP_OPT:
default:
usage();
}
lastc = c;
newarg = optind != prevoptind;
prevoptind = optind;
}
argc -= optind;
argv += optind;
for (patfile = SLIST_FIRST(&patfilelh); patfile != NULL;
patfile = pf_next) {
pf_next = SLIST_NEXT(patfile, pf_next);
read_patterns(patfile->pf_file);
free(patfile);
}
if (argc == 0 && needpattern)
usage();
if (argc != 0 && needpattern) {
add_patterns(*argv);
--argc;
++argv;
}
if (Eflag)
cflags |= REG_EXTENDED;
fg_pattern = grep_calloc(patterns, sizeof(*fg_pattern));
r_pattern = grep_calloc(patterns, sizeof(*r_pattern));
for (i = 0; i < patterns; ++i) {
/* Check if cheating is allowed (always is for fgrep). */
if (Fflag) {
fgrepcomp(&fg_pattern[i], pattern[i]);
} else {
if (fastcomp(&fg_pattern[i], pattern[i])) {
/* Fall back to full regex library */
c = regcomp(&r_pattern[i], pattern[i], cflags);
if (c != 0) {
regerror(c, &r_pattern[i], re_error,
RE_ERROR_BUF);
errx(2, "%s", re_error);
}
}
}
}
#ifndef __minix
if (lbflag)
setlinebuf(stdout);
#endif
if ((argc == 0 || argc == 1) && !oflag)
hflag = 1;
if (argc == 0)
exit(!procfile(NULL));
if (Rflag)
c = grep_tree(argv);
else
for (c = 0; argc--; ++argv)
c += procfile(*argv);
exit(!c);
}

127
minix/commands/grep/grep.h
View file

@ -1,127 +0,0 @@
/* $OpenBSD: grep.h,v 1.13 2006/02/09 09:54:47 otto Exp $ */
/*-
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* 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 AUTHOR 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 AUTHOR 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.
*/
#include <sys/types.h>
#include <limits.h>
#include <regex.h>
#include <stdio.h>
#ifndef NOZ
#include <zlib.h>
#endif
#define VER_MAJ 1
#define VER_MIN 2
#define BIN_FILE_BIN 0
#define BIN_FILE_SKIP 1
#define BIN_FILE_TEXT 2
typedef struct {
size_t len;
int line_no;
off_t off;
char *file;
char *dat;
} str_t;
typedef struct {
unsigned char *pattern;
int patternLen;
int qsBc[UCHAR_MAX + 1];
/* flags */
int bol;
int eol;
int wmatch;
int reversedSearch;
} fastgrep_t;
/* Flags passed to regcomp() and regexec() */
extern int cflags, eflags;
/* Command line flags */
extern int Aflag, Bflag, Eflag, Fflag, Gflag, Hflag, Lflag, Pflag,
Sflag, Rflag, Zflag,
bflag, cflag, hflag, iflag, lflag, nflag, qflag, sflag,
vflag, wflag, xflag;
extern int binbehave;
extern int first, matchall, patterns, tail;
extern char **pattern;
extern fastgrep_t *fg_pattern;
extern regex_t *r_pattern;
/* For regex errors */
#define RE_ERROR_BUF 512
extern char re_error[RE_ERROR_BUF + 1]; /* Seems big enough */
/* util.c */
int procfile(char *fn);
int grep_tree(char **argv);
void *grep_malloc(size_t size);
void *grep_calloc(size_t nmemb, size_t size);
void *grep_realloc(void *ptr, size_t size);
void printline(str_t *line, int sep);
int fastcomp(fastgrep_t *, const char *);
void fgrepcomp(fastgrep_t *, const char *);
/* queue.c */
void initqueue(void);
void enqueue(str_t *x);
void printqueue(void);
void clearqueue(void);
/* mmfile.c */
typedef struct mmfile {
int fd;
size_t len;
unsigned char *base, *end, *ptr;
} mmf_t;
mmf_t *mmopen(char *fn, char *mode);
void mmclose(mmf_t *mmf);
char *mmfgetln(mmf_t *mmf, size_t *l);
/* file.c */
struct file;
typedef struct file file_t;
file_t *grep_fdopen(int fd, char *mode);
file_t *grep_open(char *path, char *mode);
int grep_bin_file(file_t *f);
char *grep_fgetln(file_t *f, size_t *l);
void grep_close(file_t *f);
/* binary.c */
int bin_file(FILE * f);
#ifndef NOZ
int gzbin_file(gzFile * f);
#endif
int mmbin_file(mmf_t *f);

102
minix/commands/grep/mmfile.c
View file

@ -1,102 +0,0 @@
/* $OpenBSD: mmfile.c,v 1.11 2006/09/19 05:52:23 otto Exp $ */
/*-
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* 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 AUTHOR 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 AUTHOR 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.
*/
#include <sys/param.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <err.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include "grep.h"
#define MAX_MAP_LEN 1048576
mmf_t *
mmopen(char *fn, char *mode)
{
mmf_t *mmf;
struct stat st;
/* XXX ignore mode for now */
mode = mode;
mmf = grep_malloc(sizeof *mmf);
if ((mmf->fd = open(fn, O_RDONLY)) == -1)
goto ouch1;
if (fstat(mmf->fd, &st) == -1)
goto ouch2;
if (st.st_size > SIZE_T_MAX) /* too big to mmap */
goto ouch2;
if (!S_ISREG(st.st_mode)) /* only mmap regular files */
goto ouch2;
mmf->len = (size_t)st.st_size;
mmf->base = mmap(NULL, mmf->len, PROT_READ, MAP_PRIVATE, mmf->fd, (off_t)0);
if (mmf->base == MAP_FAILED)
goto ouch2;
mmf->ptr = mmf->base;
mmf->end = mmf->base + mmf->len;
#ifndef __minix
madvise(mmf->base, mmf->len, MADV_SEQUENTIAL);
#endif
return mmf;
ouch2:
close(mmf->fd);
ouch1:
free(mmf);
return NULL;
}
void
mmclose(mmf_t *mmf)
{
munmap(mmf->base, mmf->len);
close(mmf->fd);
free(mmf);
}
char *
mmfgetln(mmf_t *mmf, size_t *l)
{
static unsigned char *p;
char *start = mmf->ptr; /* Remove speed bump */
char *end = mmf->end; /* Remove speed bump */
if (start >= end)
return NULL;
for (p = mmf->ptr; mmf->ptr < mmf->end; ++mmf->ptr)
if (*mmf->ptr == '\n')
break;
*l = mmf->ptr - p;
++mmf->ptr;
return p;
}

17
minix/commands/grep/readme.md
View file

@ -1,17 +0,0 @@
FreeGrep
========
The grep utility searches any given input files, selecting lines
that match one or more patterns. By default, a pattern matches an
input line if the regular expression in the pattern matches the
input line without its trailing newline. An empty expression matches
every line. Each input line that matches at least one of the patterns
is written to the standard output. grep is used for simple patterns
and basic regular expressions; egrep can handle extended regular
expressions. fgrep is quicker than both grep and egrep, but can
only handle fixed patterns (i.e. it does not interpret regular
expressions). Patterns may consist of one or more lines, allowing
any of the pattern lines to match a portion of the input. zgrep,
zegrep, and zfgrep act like grep, egrep, and fgrep, respectively,
but accept input files compressed with the compress or gzip compression
utilities.

594
minix/commands/grep/util.c
View file

@ -1,594 +0,0 @@
/* $OpenBSD: util.c,v 1.35 2007/09/02 15:19:32 deraadt Exp $ */
/*-
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* 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 AUTHOR 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 AUTHOR 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.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fts.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "grep.h"
/*
* Process a file line by line...
*/
static int linesqueued;
static int procline(str_t *l, int);
static int grep_search(fastgrep_t *, unsigned char *, size_t, regmatch_t *pmatch);
static int grep_cmp(const unsigned char *, const unsigned char *, size_t);
static void grep_revstr(unsigned char *, int);
int
grep_tree(char **argv)
{
FTS *fts;
FTSENT *p;
int c, fts_flags;
c = fts_flags = 0;
if (Hflag)
fts_flags = FTS_COMFOLLOW;
if (Pflag)
fts_flags = FTS_PHYSICAL;
if (Sflag)
fts_flags = FTS_LOGICAL;
fts_flags |= FTS_NOSTAT | FTS_NOCHDIR;
if (!(fts = fts_open(argv, fts_flags, NULL)))
err(2, NULL);
while ((p = fts_read(fts)) != NULL) {
switch (p->fts_info) {
case FTS_DNR:
/* FALL THROUGH */
case FTS_ERR:
errx(2, "%s: %s", p->fts_path, strerror(p->fts_errno));
break;
case FTS_D:
case FTS_DP:
break;
default:
c += procfile(p->fts_path);
break;
}
}
if (errno)
err(2, "fts_read");
return c;
}
int
procfile(char *fn)
{
str_t ln;
file_t *f;
int c, t, z, nottext;
if (fn == NULL) {
fn = "(standard input)";
f = grep_fdopen(STDIN_FILENO, "r");
} else {
f = grep_open(fn, "r");
}
if (f == NULL) {
if (!sflag)
warn("%s", fn);
return 0;
}
nottext = grep_bin_file(f);
if (nottext && binbehave == BIN_FILE_SKIP) {
grep_close(f);
return 0;
}
ln.file = fn;
ln.line_no = 0;
ln.len = 0;
linesqueued = 0;
tail = 0;
ln.off = -1;
if (Bflag > 0)
initqueue();
for (c = 0; c == 0 || !(lflag || qflag); ) {
ln.off += ln.len + 1;
if ((ln.dat = grep_fgetln(f, &ln.len)) == NULL)
break;
if (ln.len > 0 && ln.dat[ln.len - 1] == '\n')
--ln.len;
ln.line_no++;
z = tail;
if ((t = procline(&ln, nottext)) == 0 && Bflag > 0 && z == 0) {
enqueue(&ln);
linesqueued++;
}
c += t;
}
if (Bflag > 0)
clearqueue();
grep_close(f);
if (cflag) {
if (!hflag)
printf("%s:", ln.file);
printf("%u\n", c);
}
if (lflag && c != 0)
printf("%s\n", fn);
if (Lflag && c == 0)
printf("%s\n", fn);
if (c && !cflag && !lflag && !Lflag &&
binbehave == BIN_FILE_BIN && nottext && !qflag)
printf("Binary file %s matches\n", fn);
return c;
}
/*
* Process an individual line in a file. Return non-zero if it matches.
*/
#define isword(x) (isalnum(x) || (x) == '_')
static int
procline(str_t *l, int nottext)
{
regmatch_t pmatch;
int c, i, r;
if (matchall) {
c = !vflag;
goto print;
}
for (c = i = 0; i < patterns; i++) {
if (fg_pattern[i].pattern) {
r = grep_search(&fg_pattern[i], (unsigned char *)l->dat,
l->len, &pmatch);
} else {
pmatch.rm_so = 0;
pmatch.rm_eo = l->len;
r = regexec(&r_pattern[i], l->dat, 1, &pmatch, eflags);
}
if (r == 0 && xflag) {
if (pmatch.rm_so != 0 || pmatch.rm_eo != l->len)
r = REG_NOMATCH;
}
if (r == 0) {
c++;
break;
}
}
if (vflag)
c = !c;
print:
if (c && binbehave == BIN_FILE_BIN && nottext)
return c; /* Binary file */
if ((tail > 0 || c) && !cflag && !qflag) {
if (c) {
if (first > 0 && tail == 0 && (Bflag < linesqueued) &&
(Aflag || Bflag))
printf("--\n");
first = 1;
tail = Aflag;
if (Bflag > 0)
printqueue();
linesqueued = 0;
printline(l, ':');
} else {
printline(l, '-');
tail--;
}
}
return c;
}
void
fgrepcomp(fastgrep_t *fg, const char *pattern)
{
int i;
/* Initialize. */
fg->patternLen = strlen(pattern);
fg->bol = 0;
fg->eol = 0;
fg->wmatch = wflag;
fg->reversedSearch = 0;
/*
* Make a copy and upper case it for later if in -i mode,
* else just copy the pointer.
*/
if (iflag) {
fg->pattern = grep_malloc(fg->patternLen + 1);
for (i = 0; i < fg->patternLen; i++)
fg->pattern[i] = toupper(pattern[i]);
fg->pattern[fg->patternLen] = '\0';
} else
fg->pattern = (unsigned char *)pattern; /* really const */
/* Preprocess pattern. */
for (i = 0; i <= UCHAR_MAX; i++)
fg->qsBc[i] = fg->patternLen;
for (i = 1; i < fg->patternLen; i++) {
fg->qsBc[fg->pattern[i]] = fg->patternLen - i;
/*
* If case is ignored, make the jump apply to both upper and
* lower cased characters. As the pattern is stored in upper
* case, apply the same to the lower case equivalents.
*/
if (iflag)
fg->qsBc[tolower(fg->pattern[i])] = fg->patternLen - i;
}
}
/*
* Returns: -1 on failure, 0 on success
*/
int
fastcomp(fastgrep_t *fg, const char *pattern)
{
int i;
int bol = 0;
int eol = 0;
int shiftPatternLen;
int hasDot = 0;
int firstHalfDot = -1;
int firstLastHalfDot = -1;
int lastHalfDot = 0;
/* Initialize. */
fg->patternLen = strlen(pattern);
fg->bol = 0;
fg->eol = 0;
fg->wmatch = 0;
fg->reversedSearch = 0;
/* Remove end-of-line character ('$'). */
if (pattern[fg->patternLen - 1] == '$') {
eol++;
fg->eol = 1;
fg->patternLen--;
}
/* Remove beginning-of-line character ('^'). */
if (pattern[0] == '^') {
bol++;
fg->bol = 1;
fg->patternLen--;
}
/* Remove enclosing [[:<:]] and [[:>:]] (word match). */
if (wflag) {
/* basic re's use \( \), extended re's ( ) */
int extra = Eflag ? 1 : 2;
fg->patternLen -= 14 + 2 * extra;
fg->wmatch = 7 + extra;
} else if (fg->patternLen >= 14 &&
strncmp(pattern + fg->bol, "[[:<:]]", 7) == 0 &&
strncmp(pattern + fg->bol + fg->patternLen - 7, "[[:>:]]", 7) == 0) {
fg->patternLen -= 14;
fg->wmatch = 7;
}
/*
* Copy pattern minus '^' and '$' characters as well as word
* match character classes at the beginning and ending of the
* string respectively.
*/
fg->pattern = grep_malloc(fg->patternLen + 1);
memcpy(fg->pattern, pattern + bol + fg->wmatch, fg->patternLen);
fg->pattern[fg->patternLen] = '\0';
/* Look for ways to cheat...er...avoid the full regex engine. */
for (i = 0; i < fg->patternLen; i++)
{
/* Can still cheat? */
if ((isalnum(fg->pattern[i])) || isspace(fg->pattern[i]) ||
(fg->pattern[i] == '_') || (fg->pattern[i] == ',') ||
(fg->pattern[i] == '=') || (fg->pattern[i] == '-') ||
(fg->pattern[i] == ':') || (fg->pattern[i] == '/')) {
/* As long as it is good, upper case it for later. */
if (iflag)
fg->pattern[i] = toupper(fg->pattern[i]);
} else if (fg->pattern[i] == '.') {
hasDot = i;
if (i < fg->patternLen / 2) {
if (firstHalfDot < 0)
/* Closest dot to the beginning */
firstHalfDot = i;
} else {
/* Closest dot to the end of the pattern. */
lastHalfDot = i;
if (firstLastHalfDot < 0)
firstLastHalfDot = i;
}
} else {
/* Free memory and let others know this is empty. */
free(fg->pattern);
fg->pattern = NULL;
return (-1);
}
}
/*
* Determine if a reverse search would be faster based on the placement
* of the dots.
*/
if ((!(lflag || cflag)) && ((!(bol || eol)) &&
((lastHalfDot) && ((firstHalfDot < 0) ||
((fg->patternLen - (lastHalfDot + 1)) < firstHalfDot))))) {
fg->reversedSearch = 1;
hasDot = fg->patternLen - (firstHalfDot < 0 ?
firstLastHalfDot : firstHalfDot) - 1;
grep_revstr(fg->pattern, fg->patternLen);
}
/*
* Normal Quick Search would require a shift based on the position the
* next character after the comparison is within the pattern. With
* wildcards, the position of the last dot effects the maximum shift
* distance.
* The closer to the end the wild card is the slower the search. A
* reverse version of this algorithm would be useful for wildcards near
* the end of the string.
*
* Examples:
* Pattern Max shift
* ------- ---------
* this 5
* .his 4
* t.is 3
* th.s 2
* thi. 1
*/
/* Adjust the shift based on location of the last dot ('.'). */
shiftPatternLen = fg->patternLen - hasDot;
/* Preprocess pattern. */
for (i = 0; i <= UCHAR_MAX; i++)
fg->qsBc[i] = shiftPatternLen;
for (i = hasDot + 1; i < fg->patternLen; i++) {
fg->qsBc[fg->pattern[i]] = fg->patternLen - i;
/*
* If case is ignored, make the jump apply to both upper and
* lower cased characters. As the pattern is stored in upper
* case, apply the same to the lower case equivalents.
*/
if (iflag)
fg->qsBc[tolower(fg->pattern[i])] = fg->patternLen - i;
}
/*
* Put pattern back to normal after pre-processing to allow for easy
* comparisons later.
*/
if (fg->reversedSearch)
grep_revstr(fg->pattern, fg->patternLen);
return (0);
}
/*
* Word boundaries using regular expressions are defined as the point
* of transition from a non-word char to a word char, or vice versa.
* This means that grep -w +a and grep -w a+ never match anything,
* because they lack a starting or ending transition, but grep -w a+b
* does match a line containing a+b.
*/
#define wmatch(d, l, s, e) \
((s == 0 || !isword(d[s-1])) && (e == l || !isword(d[e])) && \
e > s && isword(d[s]) && isword(d[e-1]))
static int
grep_search(fastgrep_t *fg, unsigned char *data, size_t dataLen, regmatch_t *pmatch)
{
int j;
int rtrnVal = REG_NOMATCH;
pmatch->rm_so = -1;
pmatch->rm_eo = -1;
/* No point in going farther if we do not have enough data. */
if (dataLen < fg->patternLen)
return (rtrnVal);
/* Only try once at the beginning or ending of the line. */
if (fg->bol || fg->eol) {
/* Simple text comparison. */
/* Verify data is >= pattern length before searching on it. */
if (dataLen >= fg->patternLen) {
/* Determine where in data to start search at. */
if (fg->eol)
j = dataLen - fg->patternLen;
else
j = 0;
if (!((fg->bol && fg->eol) && (dataLen != fg->patternLen)))
if (grep_cmp(fg->pattern, data + j,
fg->patternLen) == -1) {
pmatch->rm_so = j;
pmatch->rm_eo = j + fg->patternLen;
if (!fg->wmatch || wmatch(data, dataLen,
pmatch->rm_so, pmatch->rm_eo))
rtrnVal = 0;
}
}
} else if (fg->reversedSearch) {
/* Quick Search algorithm. */
j = dataLen;
do {
if (grep_cmp(fg->pattern, data + j - fg->patternLen,
fg->patternLen) == -1) {
pmatch->rm_so = j - fg->patternLen;
pmatch->rm_eo = j;
if (!fg->wmatch || wmatch(data, dataLen,
pmatch->rm_so, pmatch->rm_eo)) {
rtrnVal = 0;
break;
}
}
/* Shift if within bounds, otherwise, we are done. */
if (j == fg->patternLen)
break;
j -= fg->qsBc[data[j - fg->patternLen - 1]];
} while (j >= fg->patternLen);
} else {
/* Quick Search algorithm. */
j = 0;
do {
if (grep_cmp(fg->pattern, data + j, fg->patternLen) == -1) {
pmatch->rm_so = j;
pmatch->rm_eo = j + fg->patternLen;
if (fg->patternLen == 0 || !fg->wmatch ||
wmatch(data, dataLen, pmatch->rm_so,
pmatch->rm_eo)) {
rtrnVal = 0;
break;
}
}
/* Shift if within bounds, otherwise, we are done. */
if (j + fg->patternLen == dataLen)
break;
else
j += fg->qsBc[data[j + fg->patternLen]];
} while (j <= (dataLen - fg->patternLen));
}
return (rtrnVal);
}
void *
grep_malloc(size_t size)
{
void *ptr;
if ((ptr = malloc(size)) == NULL)
err(2, "malloc");
return ptr;
}
void *
grep_calloc(size_t nmemb, size_t size)
{
void *ptr;
if ((ptr = calloc(nmemb, size)) == NULL && (size > 0) && (nmemb > 0))
err(2, "calloc");
return ptr;
}
void *
grep_realloc(void *ptr, size_t size)
{
if ((ptr = realloc(ptr, size)) == NULL)
err(2, "realloc");
return ptr;
}
/*
* Returns: i >= 0 on failure (position that it failed)
* -1 on success
*/
static int
grep_cmp(const unsigned char *pattern, const unsigned char *data, size_t len)
{
int i;
for (i = 0; i < len; i++) {
if (((pattern[i] == data[i]) || (!Fflag && pattern[i] == '.'))
|| (iflag && pattern[i] == toupper(data[i])))
continue;
return (i);
}
return (-1);
}
static void
grep_revstr(unsigned char *str, int len)
{
int i;
char c;
for (i = 0; i < len / 2; i++) {
c = str[i];
str[i] = str[len - i - 1];
str[len - i - 1] = c;
}
}
void
printline(str_t *line, int sep)
{
int n;
n = 0;
if (!hflag) {
fputs(line->file, stdout);
++n;
}
if (nflag) {
if (n)
putchar(sep);
printf("%d", line->line_no);
++n;
}
if (bflag) {
if (n)
putchar(sep);
#ifndef __minix
printf("%lld", (long long)line->off);
#else
printf("%ld", (long)line->off);
#endif
++n;
}
if (n)
putchar(sep);
fwrite(line->dat, line->len, 1, stdout);
putchar('\n');
}

2
minix/drivers/storage/ramdisk/Makefile
View file

@ -34,7 +34,7 @@ PROGRAMS= # defined
PROGRAMS+= fsck_mfs
dir.fsck_mfs:= minix/commands/fsck.mfs
PROGRAMS+= grep
dir.grep:= minix/commands/grep
dir.grep:= usr.bin/grep
PROGRAMS+= input
dir.input:= minix/servers/input
PROGRAMS+= loadramdisk

2
usr.bin/Makefile
View file

@ -11,7 +11,7 @@ SUBDIR= asa \
deroff dirname du \
env expand \
false finger fold fpr from \
fsplit ftp genassym getopt \
fsplit ftp genassym getopt grep \
head hexdump id indent infocmp join jot \
lam last ldd leave \
lock login logname lorder m4 \

40
usr.bin/grep/Makefile Normal file
View file

@ -0,0 +1,40 @@
# $NetBSD: Makefile,v 1.5 2011/08/17 15:32:20 christos Exp $
# $FreeBSD: head/usr.bin/grep/Makefile 210389 2010-07-22 19:11:57Z gabor $
# $OpenBSD: Makefile,v 1.6 2003/06/25 15:00:04 millert Exp $
PROG= grep
SRCS= fastgrep.c file.c grep.c queue.c util.c
LINKS= ${BINDIR}/grep ${BINDIR}/egrep \
${BINDIR}/grep ${BINDIR}/fgrep \
${BINDIR}/grep ${BINDIR}/zgrep \
${BINDIR}/grep ${BINDIR}/zegrep \
${BINDIR}/grep ${BINDIR}/zfgrep
MLINKS= grep.1 egrep.1 \
grep.1 fgrep.1 \
grep.1 zgrep.1 \
grep.1 zegrep.1 \
grep.1 zfgrep.1
LDADD= -lz -lbz2
DPADD= ${LIBZ} ${LIBBZ2}
.PATH: ${.CURDIR}/nls
NLS= C.msg \
es_ES.ISO8859-1.msg \
gl_ES.ISO8859-1.msg \
hu_HU.ISO8859-2.msg \
ja_JP.eucJP.msg \
ja_JP.SJIS.msg \
ja_JP.UTF-8.msg \
pt_BR.ISO8859-1.msg \
ru_RU.KOI8-R.msg \
uk_UA.UTF-8.msg \
zh_CN.UTF-8.msg
COPTS.grep.c += -Wno-format-nonliteral
COPTS.util.c += -Wno-format-nonliteral
.include <bsd.prog.mk>

336
usr.bin/grep/fastgrep.c Normal file
View file

@ -0,0 +1,336 @@
/* $OpenBSD: util.c,v 1.36 2007/10/02 17:59:18 otto Exp $ */
/* $FreeBSD: head/usr.bin/grep/fastgrep.c 211496 2010-08-19 09:28:59Z des $ */
/*-
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* Copyright (C) 2008 Gabor Kovesdan <gabor@FreeBSD.org>
* 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 AUTHOR 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 AUTHOR 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.
*/
/*
* XXX: This file is a speed up for grep to cover the defects of the
* regex library. These optimizations should practically be implemented
* there keeping this code clean. This is a future TODO, but for the
* meantime, we need to use this workaround.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
__RCSID("$NetBSD: fastgrep.c,v 1.5 2011/04/18 03:27:40 joerg Exp $");
#include <limits.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <wctype.h>
#include "grep.h"
static inline int grep_cmp(const unsigned char *, const unsigned char *, size_t);
static inline void grep_revstr(unsigned char *, int);
void
fgrepcomp(fastgrep_t *fg, const char *pat)
{
unsigned int i;
/* Initialize. */
fg->len = strlen(pat);
fg->bol = false;
fg->eol = false;
fg->reversed = false;
fg->pattern = (unsigned char *)grep_strdup(pat);
/* Preprocess pattern. */
for (i = 0; i <= UCHAR_MAX; i++)
fg->qsBc[i] = fg->len;
for (i = 1; i < fg->len; i++)
fg->qsBc[fg->pattern[i]] = fg->len - i;
}
/*
* Returns: -1 on failure, 0 on success
*/
int
fastcomp(fastgrep_t *fg, const char *pat)
{
unsigned int i;
int firstHalfDot = -1;
int firstLastHalfDot = -1;
int hasDot = 0;
int lastHalfDot = 0;
int shiftPatternLen;
/* Initialize. */
fg->len = strlen(pat);
fg->bol = false;
fg->eol = false;
fg->reversed = false;
fg->word = wflag;
/* Remove end-of-line character ('$'). */
if (fg->len > 0 && pat[fg->len - 1] == '$') {
fg->eol = true;
fg->len--;
}
/* Remove beginning-of-line character ('^'). */
if (pat[0] == '^') {
fg->bol = true;
fg->len--;
pat++;
}
if (fg->len >= 14 &&
memcmp(pat, "[[:<:]]", 7) == 0 &&
memcmp(pat + fg->len - 7, "[[:>:]]", 7) == 0) {
fg->len -= 14;
pat += 7;
/* Word boundary is handled separately in util.c */
fg->word = true;
}
/*
* pat has been adjusted earlier to not include '^', '$' or
* the word match character classes at the beginning and ending
* of the string respectively.
*/
fg->pattern = grep_malloc(fg->len + 1);
memcpy(fg->pattern, pat, fg->len);
fg->pattern[fg->len] = '\0';
/* Look for ways to cheat...er...avoid the full regex engine. */
for (i = 0; i < fg->len; i++) {
/* Can still cheat? */
if (fg->pattern[i] == '.') {
hasDot = i;
if (i < fg->len / 2) {
if (firstHalfDot < 0)
/* Closest dot to the beginning */
firstHalfDot = i;
} else {
/* Closest dot to the end of the pattern. */
lastHalfDot = i;
if (firstLastHalfDot < 0)
firstLastHalfDot = i;
}
} else {
/* Free memory and let others know this is empty. */
free(fg->pattern);
fg->pattern = NULL;
return (-1);
}
}
/*
* Determine if a reverse search would be faster based on the placement
* of the dots.
*/
if ((!(lflag || cflag)) && ((!(fg->bol || fg->eol)) &&
((lastHalfDot) && ((firstHalfDot < 0) ||
((fg->len - (lastHalfDot + 1)) < (size_t)firstHalfDot)))) &&
!oflag && !color) {
fg->reversed = true;
hasDot = fg->len - (firstHalfDot < 0 ?
firstLastHalfDot : firstHalfDot) - 1;
grep_revstr(fg->pattern, fg->len);
}
/*
* Normal Quick Search would require a shift based on the position the
* next character after the comparison is within the pattern. With
* wildcards, the position of the last dot effects the maximum shift
* distance.
* The closer to the end the wild card is the slower the search. A
* reverse version of this algorithm would be useful for wildcards near
* the end of the string.
*
* Examples:
* Pattern Max shift
* ------- ---------
* this 5
* .his 4
* t.is 3
* th.s 2
* thi. 1
*/
/* Adjust the shift based on location of the last dot ('.'). */
shiftPatternLen = fg->len - hasDot;
/* Preprocess pattern. */
for (i = 0; i <= (signed)UCHAR_MAX; i++)
fg->qsBc[i] = shiftPatternLen;
for (i = hasDot + 1; i < fg->len; i++) {
fg->qsBc[fg->pattern[i]] = fg->len - i;
}
/*
* Put pattern back to normal after pre-processing to allow for easy
* comparisons later.
*/
if (fg->reversed)
grep_revstr(fg->pattern, fg->len);
return (0);
}
int
grep_search(fastgrep_t *fg, const unsigned char *data, size_t len, regmatch_t *pmatch)
{
unsigned int j;
int ret = REG_NOMATCH;
if (pmatch->rm_so == (ssize_t)len)
return (ret);
if (fg->bol && pmatch->rm_so != 0) {
pmatch->rm_so = len;
pmatch->rm_eo = len;
return (ret);
}
/* No point in going farther if we do not have enough data. */
if (len < fg->len)
return (ret);
/* Only try once at the beginning or ending of the line. */
if (fg->bol || fg->eol) {
/* Simple text comparison. */
/* Verify data is >= pattern length before searching on it. */
if (len >= fg->len) {
/* Determine where in data to start search at. */
j = fg->eol ? len - fg->len : 0;
if (!((fg->bol && fg->eol) && (len != fg->len)))
if (grep_cmp(fg->pattern, data + j,
fg->len) == -1) {
pmatch->rm_so = j;
pmatch->rm_eo = j + fg->len;
ret = 0;
}
}
} else if (fg->reversed) {
/* Quick Search algorithm. */
j = len;
do {
if (grep_cmp(fg->pattern, data + j - fg->len,
fg->len) == -1) {
pmatch->rm_so = j - fg->len;
pmatch->rm_eo = j;
ret = 0;
break;
}
/* Shift if within bounds, otherwise, we are done. */
if (j == fg->len)
break;
j -= fg->qsBc[data[j - fg->len - 1]];
} while (j >= fg->len);
} else {
/* Quick Search algorithm. */
j = pmatch->rm_so;
do {
if (grep_cmp(fg->pattern, data + j, fg->len) == -1) {
pmatch->rm_so = j;
pmatch->rm_eo = j + fg->len;
ret = 0;
break;
}
/* Shift if within bounds, otherwise, we are done. */
if (j + fg->len == len)
break;
else
j += fg->qsBc[data[j + fg->len]];
} while (j <= (len - fg->len));
}
return (ret);
}
/*
* Returns: i >= 0 on failure (position that it failed)
* -1 on success
*/
static inline int
grep_cmp(const unsigned char *pat, const unsigned char *data, size_t len)
{
size_t size;
wchar_t *wdata, *wpat;
unsigned int i;
if (iflag) {
if ((size = mbstowcs(NULL, (const char *)data, 0)) ==
((size_t) - 1))
return (-1);
wdata = grep_malloc(size * sizeof(wint_t));
if (mbstowcs(wdata, (const char *)data, size) ==
((size_t) - 1))
return (-1);
if ((size = mbstowcs(NULL, (const char *)pat, 0)) ==
((size_t) - 1))
return (-1);
wpat = grep_malloc(size * sizeof(wint_t));
if (mbstowcs(wpat, (const char *)pat, size) == ((size_t) - 1))
return (-1);
for (i = 0; i < len; i++) {
if ((towlower(wpat[i]) == towlower(wdata[i])) ||
((grepbehave != GREP_FIXED) && wpat[i] == L'.'))
continue;
free(wpat);
free(wdata);
return (i);
}
} else {
for (i = 0; i < len; i++) {
if ((pat[i] == data[i]) || ((grepbehave != GREP_FIXED) &&
pat[i] == '.'))
continue;
return (i);
}
}
return (-1);
}
static inline void
grep_revstr(unsigned char *str, int len)
{
int i;
char c;
for (i = 0; i < len / 2; i++) {
c = str[i];
str[i] = str[len - i - 1];
str[len - i - 1] = c;
}
}

259
usr.bin/grep/file.c Normal file
View file

@ -0,0 +1,259 @@
/* $NetBSD: file.c,v 1.7 2011/04/18 22:46:48 joerg Exp $ */
/* $FreeBSD: head/usr.bin/grep/file.c 211496 2010-08-19 09:28:59Z des $ */
/* $OpenBSD: file.c,v 1.11 2010/07/02 20:48:48 nicm Exp $ */
/*-
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* Copyright (C) 2008-2010 Gabor Kovesdan <gabor@FreeBSD.org>
* Copyright (C) 2010 Dimitry Andric <dimitry@andric.com>
* 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 AUTHOR 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 AUTHOR 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.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
__RCSID("$NetBSD: file.c,v 1.7 2011/04/18 22:46:48 joerg Exp $");
#include <sys/param.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <bzlib.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>
#include <wctype.h>
#include <zlib.h>
#include "grep.h"
#define MAXBUFSIZ (32 * 1024)
#define LNBUFBUMP 80
static gzFile gzbufdesc;
static BZFILE* bzbufdesc;
static unsigned char buffer[MAXBUFSIZ];
static unsigned char *bufpos;
static size_t bufrem;
static unsigned char *lnbuf;
static size_t lnbuflen;
static inline int
grep_refill(struct file *f)
{
ssize_t nr;
int bzerr;
bufpos = buffer;
bufrem = 0;
if (filebehave == FILE_GZIP)
nr = gzread(gzbufdesc, buffer, MAXBUFSIZ);
else if (filebehave == FILE_BZIP && bzbufdesc != NULL) {
nr = BZ2_bzRead(&bzerr, bzbufdesc, buffer, MAXBUFSIZ);
switch (bzerr) {
case BZ_OK:
case BZ_STREAM_END:
/* No problem, nr will be okay */
break;
case BZ_DATA_ERROR_MAGIC:
/*
* As opposed to gzread(), which simply returns the
* plain file data, if it is not in the correct
* compressed format, BZ2_bzRead() instead aborts.
*
* So, just restart at the beginning of the file again,
* and use plain reads from now on.
*/
BZ2_bzReadClose(&bzerr, bzbufdesc);
bzbufdesc = NULL;
if (lseek(f->fd, 0, SEEK_SET) == -1)
return (-1);
nr = read(f->fd, buffer, MAXBUFSIZ);
break;
default:
/* Make sure we exit with an error */
nr = -1;
}
} else
nr = read(f->fd, buffer, MAXBUFSIZ);
if (nr < 0)
return (-1);
bufrem = nr;
return (0);
}
static inline int
grep_lnbufgrow(size_t newlen)
{
if (lnbuflen < newlen) {
lnbuf = grep_realloc(lnbuf, newlen);
lnbuflen = newlen;
}
return (0);
}
char *
grep_fgetln(struct file *f, size_t *lenp)
{
unsigned char *p;
char *ret;
size_t len;
size_t off;
ptrdiff_t diff;
/* Fill the buffer, if necessary */
if (bufrem == 0 && grep_refill(f) != 0)
goto error;
if (bufrem == 0) {
/* Return zero length to indicate EOF */
*lenp = 0;
return ((char *)bufpos);
}
/* Look for a newline in the remaining part of the buffer */
if ((p = memchr(bufpos, line_sep, bufrem)) != NULL) {
++p; /* advance over newline */
ret = (char *)bufpos;
len = p - bufpos;
bufrem -= len;
bufpos = p;
*lenp = len;
return (ret);
}
/* We have to copy the current buffered data to the line buffer */
for (len = bufrem, off = 0; ; len += bufrem) {
/* Make sure there is room for more data */
if (grep_lnbufgrow(len + LNBUFBUMP))
goto error;
memcpy(lnbuf + off, bufpos, len - off);
off = len;
if (grep_refill(f) != 0)
goto error;
if (bufrem == 0)
/* EOF: return partial line */
break;
if ((p = memchr(bufpos, line_sep, bufrem)) == NULL)
continue;
/* got it: finish up the line (like code above) */
++p;
diff = p - bufpos;
len += diff;
if (grep_lnbufgrow(len))
goto error;
memcpy(lnbuf + off, bufpos, diff);
bufrem -= diff;
bufpos = p;
break;
}
*lenp = len;
return ((char *)lnbuf);
error:
*lenp = 0;
return (NULL);
}
static inline struct file *
grep_file_init(struct file *f)
{
if (filebehave == FILE_GZIP &&
(gzbufdesc = gzdopen(f->fd, "r")) == NULL)
goto error;
if (filebehave == FILE_BZIP &&
(bzbufdesc = BZ2_bzdopen(f->fd, "r")) == NULL)
goto error;
/* Fill read buffer, also catches errors early */
if (grep_refill(f) != 0)
goto error;
/* Check for binary stuff, if necessary */
if (!nulldataflag && binbehave != BINFILE_TEXT &&
memchr(bufpos, '\0', bufrem) != NULL)
f->binary = true;
return (f);
error:
close(f->fd);
free(f);
return (NULL);
}
/*
* Opens a file for processing.
*/
struct file *
grep_open(const char *path)
{
struct file *f;
f = grep_malloc(sizeof *f);
memset(f, 0, sizeof *f);
if (path == NULL) {
/* Processing stdin implies --line-buffered. */
lbflag = true;
f->fd = STDIN_FILENO;
} else if ((f->fd = open(path, O_RDONLY)) == -1) {
free(f);
return (NULL);
}
return (grep_file_init(f));
}
/*
* Closes a file.
*/
void
grep_close(struct file *f)
{
close(f->fd);
/* Reset read buffer and line buffer */
bufpos = buffer;
bufrem = 0;
free(lnbuf);
lnbuf = NULL;
lnbuflen = 0;
}

210
minix/commands/grep/grep.1 → usr.bin/grep/grep.1
View file

@ -1,4 +1,6 @@
.\" $OpenBSD: grep.1,v 1.35 2007/05/31 19:20:10 jmc Exp $
.\" $NetBSD: grep.1,v 1.4 2012/04/08 22:00:38 wiz Exp $
.\" $FreeBSD: head/usr.bin/grep/grep.1 210652 2010-07-30 14:05:20Z joel $
.\" $OpenBSD: grep.1,v 1.38 2010/04/05 06:30:59 jmc Exp $
.\" Copyright (c) 1980, 1990, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
@ -28,7 +30,7 @@
.\"
.\" @(#)grep.1 8.3 (Berkeley) 4/18/94
.\"
.Dd $Mdocdate: May 31 2007 $
.Dd April 19, 2011
.Dt GREP 1
.Os
.Sh NAME
@ -37,19 +39,21 @@
.Nd file pattern searcher
.Sh SYNOPSIS
.Nm grep
.Bk -words
.Op Fl abcEFGHhIiLlnoPqRSsUVvwxZ
.Op Fl abcdDEFGHhIiJLlmnOopqRSsUVvwxZz
.Op Fl A Ar num
.Op Fl B Ar num
.Op Fl C Ns Op Ar num
.Op Fl e Ar pattern
.Op Fl f Ar file
.Op Fl -binary-files Ns = Ns Ar value
.Op Fl -context Ns Op = Ns Ar num
.Op Fl -line-buffered
.Op Fl Fl binary-files Ns = Ns Ar value
.Op Fl Fl color Ns Op = Ns Ar when
.Op Fl Fl colour Ns Op = Ns Ar when
.Op Fl Fl context Ns Op = Ns Ar num
.Op Fl Fl decompress
.Op Fl Fl label
.Op Fl Fl line-buffered
.Op Ar pattern
.Op Ar
.Ek
.Sh DESCRIPTION
The
.Nm grep
@ -99,7 +103,7 @@ compression utilities.
.Pp
The following options are available:
.Bl -tag -width indent
.It Fl A Ar num
.It Fl A Ar num , Fl Fl after-context Ns = Ns Ar num
Print
.Ar num
lines of trailing context after each match.
@ -108,7 +112,7 @@ See also the
and
.Fl C
options.
.It Fl a
.It Fl a , Fl Fl text
Treat all files as ASCII text.
Normally
.Nm
@ -118,7 +122,7 @@ if files contain binary characters.
Use of this option forces
.Nm
to output lines matching the specified pattern.
.It Fl B Ar num
.It Fl B Ar num , Fl Fl before-context Ns = Ns Ar num
Print
.Ar num
lines of leading context before each match.
@ -127,10 +131,10 @@ See also the
and
.Fl C
options.
.It Fl b
.It Fl b , Fl Fl byte-offset
The offset in bytes of a matched pattern is
displayed in front of the respective matched line.
.It Fl C Ns Op Ar num
.It Fl C Ns Op Ar num , Fl Fl context Ns = Ns Ar num
Print
.Ar num
lines of leading and trailing context surrounding each match.
@ -141,9 +145,30 @@ The default is 2 and is equivalent to
.Ar 2 .
Note:
no whitespace may be given between the option and its argument.
.It Fl c
.It Fl c , Fl Fl count
Only a count of selected lines is written to standard output.
.It Fl E
.It Fl Fl colour Ns = Ns Op Ar when , Fl Fl color Ns = Ns Op Ar when
Mark up the matching text with the expression stored in
.Ev GREP_COLOR
environment variable.
The possible values of when can be `never', `always' or `auto'.
.It Fl D Ar action , Fl Fl devices Ns = Ns Ar action
Specify the demanded action for devices, FIFOs and sockets.
The default action is `read', which means, that they are read
as if they were normal files.
If the action is set to `skip', devices will be silently skipped.
.It Fl d Ar action , Fl Fl directories Ns = Ns Ar action
Specify the demanded action for directories.
It is `read' by default, which means that the directories
are read in the same manner as normal files.
Other possible values are `skip' to silently ignore the
directories, and `recurse' to read them recursively, which
has the same effect as the
.Fl R
and
.Fl r
option.
.It Fl E , Fl Fl extended-regexp
Interpret
.Ar pattern
as an extended regular expression
@ -151,7 +176,7 @@ as an extended regular expression
.Nm grep
to behave as
.Nm egrep ) .
.It Fl e Ar pattern
.It Fl e Ar pattern , Fl Fl regexp Ns = Ns Ar pattern
Specify a pattern used during the search of the input:
an input line is selected if it matches any of the specified patterns.
This option is most useful when multiple
@ -159,7 +184,33 @@ This option is most useful when multiple
options are used to specify multiple patterns,
or when a pattern begins with a dash
.Pq Sq - .
.It Fl F
.It Fl Fl exclude
If specified, it excludes files matching the given
filename pattern from the search.
Note that
.Fl Fl exclude
patterns take priority over
.Fl Fl include
patterns, and if no
.Fl Fl include
pattern is specified, all files are searched that are
not excluded.
Patterns are matched to the full path specified,
not only to the filename component.
.It Fl Fl exclude-dir
If
.Fl R
is specified, it excludes directories matching the
given filename pattern from the search.
Note that
.Fl Fl exclude-dir
patterns take priority over
.Fl Fl include-dir
patterns, and if no
.Fl Fl include-dir
pattern is specified, all directories are searched that are
not excluded.
.It Fl F , Fl Fl fixed-strings
Interpret
.Ar pattern
as a set of fixed strings
@ -167,7 +218,7 @@ as a set of fixed strings
.Nm grep
to behave as
.Nm fgrep ) .
.It Fl f Ar file
.It Fl f Ar file , Fl Fl file Ns = Ns Ar file
Read one or more newline separated patterns from
.Ar file .
Empty pattern lines match every input line.
@ -175,7 +226,7 @@ Newlines are not considered part of a pattern.
If
.Ar file
is empty, nothing is matched.
.It Fl G
.It Fl G , Fl Fl basic-regexp
Interpret
.Ar pattern
as a basic regular expression
@ -184,30 +235,55 @@ as a basic regular expression
to behave as traditional
.Nm grep ) .
.It Fl H
If
.Fl R
is specified, follow symbolic links only if they were explicitly listed
on the command line.
The default is not to follow symbolic links.
.It Fl h
Always print filename headers with output lines.
.It Fl h , Fl Fl no-filename
Never print filename headers
.Pq i.e. filenames
with output lines.
.It Fl Fl help
Print a brief help message.
.It Fl I
Ignore binary files.
.It Fl i
This option is equivalent to
.Fl Fl binary-file Ns = Ns Ar without-match
option.
.It Fl i , Fl Fl ignore-case
Perform case insensitive matching.
By default,
.Nm grep
is case sensitive.
.It Fl L
.It Fl Fl include
If specified, only files matching the
given filename pattern are searched.
Note that
.Fl Fl exclude
patterns take priority over
.Fl Fl include
patterns.
Patterns are matched to the full path specified,
not only to the filename component.
.It Fl Fl include-dir
If
.Fl R
is specified, only directories matching the
given filename pattern are searched.
Note that
.Fl Fl exclude-dir
patterns take priority over
.Fl Fl include-dir
patterns.
.It Fl J, Fl Fl bz2decompress
Decompress the
.Xr bzip2 1
compressed file before looking for the text.
.It Fl L , Fl Fl files-without-match
Only the names of files not containing selected lines are written to
standard output.
Pathnames are listed once per file searched.
If the standard input is searched, the string
.Dq (standard input)
is written.
.It Fl l
.It Fl l , Fl Fl files-with-matches
Only the names of files containing selected lines are written to
standard output.
.Nm grep
@ -217,7 +293,18 @@ Pathnames are listed once per file searched.
If the standard input is searched, the string
.Dq (standard input)
is written.
.It Fl n
.It Fl Fl mmap
Use
.Xr mmap 2
instead of
.Xr read 2
to read input, which can result in better performance under some
circumstances but can cause undefined behaviour.
.It Fl m Ar num, Fl Fl max-count Ns = Ns Ar num
Stop reading the file after
.Ar num
matches.
.It Fl n , Fl Fl line-number
Each output line is preceded by its relative line number in the file,
starting at line 1.
The line number counter is reset for each file processed.
@ -229,54 +316,62 @@ or
.Fl q
is
specified.
.It Fl o
Always print filename headers with output lines.
.It Fl P
.It Fl O
If
.Fl R
is specified, follow symbolic links only if they were explicitly listed
on the command line.
The default is not to follow symbolic links.
.It Fl o, Fl Fl only-matching
Prints only the matching part of the lines.
.It Fl p
If
.Fl R
is specified, no symbolic links are followed.
This is the default.
.It Fl q
.It Fl q , Fl Fl quiet , Fl Fl silent
Quiet mode:
suppress normal output.
.Nm grep
will only search a file until a match has been found,
making searches potentially less expensive.
.It Fl R
.It Fl R , Fl r , Fl Fl recursive
Recursively search subdirectories listed.
.It Fl S
If
.Fl R
is specified, all symbolic links are followed.
The default is not to follow symbolic links.
.It Fl s
.It Fl s , Fl Fl no-messages
Silent mode.
Nonexistent and unreadable files are ignored
(i.e. their error messages are suppressed).
.It Fl U
.It Fl U , Fl Fl binary
Search binary files, but do not attempt to print them.
.It Fl V
Display version information.
All other options are ignored.
.It Fl v
.It Fl V , Fl Fl version
Display version information and exit.
.It Fl v , Fl Fl invert-match
Selected lines are those
.Em not
matching any of the specified patterns.
.It Fl w
.It Fl w , Fl Fl word-regexp
The expression is searched for as a word (as if surrounded by
.Sq [[:<:]]
and
.Sq [[:>:]] ;
see
.Xr re_format 7 ) .
.It Fl x
.It Fl x , Fl Fl line-regexp
Only input lines selected against an entire fixed string or regular
expression are considered to be matching lines.
.It Fl Z
Force
.Nm grep
to behave as
.Nm zgrep .
.It Fl y
Equivalent to
.Fl i .
Obsoleted.
.It Fl Z , Fl Fl null
Prints a zero-byte after the file name.
.It Fl z , Fl Fl null-data
Use the zero byte (ASCII NUL) as line separator.
.It Fl Fl binary-files Ns = Ns Ar value
Controls searching and printing of binary files.
Options are
@ -287,13 +382,16 @@ do not search binary files;
and
.Ar text :
treat all files as text.
.Sm off
.It Fl Fl context Op = Ar num
.Sm on
Print
.Ar num
lines of leading and trailing context.
The default is 2.
.It Fl Fl decompress
Detect input files compressed with
.Xr bzip2 1
or
.Xr gzip 1
and decompress them dynamically.
This makes
.Nm grep
behave like
.Nm zgrep .
.It Fl Fl line-buffered
Force output to be line buffered.
By default, output is line buffered when standard output is a terminal
@ -301,7 +399,7 @@ and block buffered otherwise.
.Pp
.El
If no file arguments are specified, the standard input is used.
.Sh RETURN VALUES
.Sh EXIT STATUS
The
.Nm grep
utility exits with one of the following values:
@ -367,7 +465,7 @@ utility is compliant with the
specification.
.Pp
The flags
.Op Fl AaBbCGHhILoPRSUVwZ
.Op Fl AaBbCDdGHhIJLmoPRSUVwZ
are extensions to that specification, and the behaviour of the
.Fl f
flag when used with an empty pattern file is left undefined.

708
usr.bin/grep/grep.c Normal file
View file

@ -0,0 +1,708 @@
/* $NetBSD: grep.c,v 1.11 2012/05/06 22:27:00 joerg Exp $ */
/* $FreeBSD: head/usr.bin/grep/grep.c 211519 2010-08-19 22:55:17Z delphij $ */
/* $OpenBSD: grep.c,v 1.42 2010/07/02 22:18:03 tedu Exp $ */
/*-
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* Copyright (C) 2008-2009 Gabor Kovesdan <gabor@FreeBSD.org>
* 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 AUTHOR 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 AUTHOR 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.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
__RCSID("$NetBSD: grep.c,v 1.11 2012/05/06 22:27:00 joerg Exp $");
#include <sys/stat.h>
#include <sys/types.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <libgen.h>
#include <locale.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "grep.h"
#ifndef WITHOUT_NLS
#include <nl_types.h>
nl_catd catalog;
#endif
/*
* Default messags to use when NLS is disabled or no catalogue
* is found.
*/
const char *errstr[] = {
"",
/* 1*/ "(standard input)",
/* 2*/ "cannot read bzip2 compressed file",
/* 3*/ "unknown %s option",
/* 4*/ "usage: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A num] [-B num] [-C[num]]\n",
/* 5*/ "\t[-e pattern] [-f file] [--binary-files=value] [--color=when]\n",
/* 6*/ "\t[--context[=num]] [--directories=action] [--label] [--line-buffered]\n",
/* 7*/ "\t[pattern] [file ...]\n",
/* 8*/ "Binary file %s matches\n",
/* 9*/ "%s (BSD grep) %s\n",
};
/* Flags passed to regcomp() and regexec() */
int cflags = 0;
int eflags = REG_STARTEND;
/* Searching patterns */
unsigned int patterns, pattern_sz;
char **pattern;
regex_t *r_pattern;
fastgrep_t *fg_pattern;
/* Filename exclusion/inclusion patterns */
unsigned int fpatterns, fpattern_sz;
unsigned int dpatterns, dpattern_sz;
struct epat *dpattern, *fpattern;
/* For regex errors */
char re_error[RE_ERROR_BUF + 1];
/* Command-line flags */
unsigned long long Aflag; /* -A x: print x lines trailing each match */
unsigned long long Bflag; /* -B x: print x lines leading each match */
bool Hflag; /* -H: always print file name */
bool Lflag; /* -L: only show names of files with no matches */
bool bflag; /* -b: show block numbers for each match */
bool cflag; /* -c: only show a count of matching lines */
bool hflag; /* -h: don't print filename headers */
bool iflag; /* -i: ignore case */
bool lflag; /* -l: only show names of files with matches */
bool mflag; /* -m x: stop reading the files after x matches */
unsigned long long mcount; /* count for -m */
bool nflag; /* -n: show line numbers in front of matching lines */
bool oflag; /* -o: print only matching part */
bool qflag; /* -q: quiet mode (don't output anything) */
bool sflag; /* -s: silent mode (ignore errors) */
bool vflag; /* -v: only show non-matching lines */
bool wflag; /* -w: pattern must start and end on word boundaries */
bool xflag; /* -x: pattern must match entire line */
bool lbflag; /* --line-buffered */
bool nullflag; /* --null */
bool nulldataflag; /* --null-data */
unsigned char line_sep = '\n'; /* 0 for --null-data */
char *label; /* --label */
const char *color; /* --color */
int grepbehave = GREP_BASIC; /* -EFGP: type of the regex */
int binbehave = BINFILE_BIN; /* -aIU: handling of binary files */
int filebehave = FILE_STDIO; /* -JZ: normal, gzip or bzip2 file */
int devbehave = DEV_READ; /* -D: handling of devices */
int dirbehave = DIR_READ; /* -dRr: handling of directories */
int linkbehave = LINK_READ; /* -OpS: handling of symlinks */
bool dexclude, dinclude; /* --exclude-dir and --include-dir */
bool fexclude, finclude; /* --exclude and --include */
enum {
BIN_OPT = CHAR_MAX + 1,
COLOR_OPT,
DECOMPRESS_OPT,
HELP_OPT,
MMAP_OPT,
LINEBUF_OPT,
LABEL_OPT,
R_EXCLUDE_OPT,
R_INCLUDE_OPT,
R_DEXCLUDE_OPT,
R_DINCLUDE_OPT
};
static inline const char *init_color(const char *);
/* Housekeeping */
int tail; /* lines left to print */
bool notfound; /* file not found */
extern char *__progname;
/*
* Prints usage information and returns 2.
*/
__dead static void
usage(void)
{
fprintf(stderr, getstr(4), __progname);
fprintf(stderr, "%s", getstr(5));
fprintf(stderr, "%s", getstr(5));
fprintf(stderr, "%s", getstr(6));
fprintf(stderr, "%s", getstr(7));
exit(2);
}
static const char optstr[] =
"0123456789A:B:C:D:EFGHIJLOPSRUVZabcd:e:f:hilm:nopqrsuvwxyz";
struct option long_options[] =
{
{"binary-files", required_argument, NULL, BIN_OPT},
{"decompress", no_argument, NULL, DECOMPRESS_OPT},
{"help", no_argument, NULL, HELP_OPT},
{"mmap", no_argument, NULL, MMAP_OPT},
{"line-buffered", no_argument, NULL, LINEBUF_OPT},
{"label", required_argument, NULL, LABEL_OPT},
{"color", optional_argument, NULL, COLOR_OPT},
{"colour", optional_argument, NULL, COLOR_OPT},
{"exclude", required_argument, NULL, R_EXCLUDE_OPT},
{"include", required_argument, NULL, R_INCLUDE_OPT},
{"exclude-dir", required_argument, NULL, R_DEXCLUDE_OPT},
{"include-dir", required_argument, NULL, R_DINCLUDE_OPT},
{"after-context", required_argument, NULL, 'A'},
{"text", no_argument, NULL, 'a'},
{"before-context", required_argument, NULL, 'B'},
{"byte-offset", no_argument, NULL, 'b'},
{"context", optional_argument, NULL, 'C'},
{"count", no_argument, NULL, 'c'},
{"devices", required_argument, NULL, 'D'},
{"directories", required_argument, NULL, 'd'},
{"extended-regexp", no_argument, NULL, 'E'},
{"regexp", required_argument, NULL, 'e'},
{"fixed-strings", no_argument, NULL, 'F'},
{"file", required_argument, NULL, 'f'},
{"basic-regexp", no_argument, NULL, 'G'},
{"no-filename", no_argument, NULL, 'h'},
{"with-filename", no_argument, NULL, 'H'},
{"ignore-case", no_argument, NULL, 'i'},
{"bz2decompress", no_argument, NULL, 'J'},
{"files-with-matches", no_argument, NULL, 'l'},
{"files-without-match", no_argument, NULL, 'L'},
{"max-count", required_argument, NULL, 'm'},
{"line-number", no_argument, NULL, 'n'},
{"only-matching", no_argument, NULL, 'o'},
{"quiet", no_argument, NULL, 'q'},
{"silent", no_argument, NULL, 'q'},
{"recursive", no_argument, NULL, 'r'},
{"no-messages", no_argument, NULL, 's'},
{"binary", no_argument, NULL, 'U'},
{"unix-byte-offsets", no_argument, NULL, 'u'},
{"invert-match", no_argument, NULL, 'v'},
{"version", no_argument, NULL, 'V'},
{"word-regexp", no_argument, NULL, 'w'},
{"line-regexp", no_argument, NULL, 'x'},
{"null", no_argument, NULL, 'Z'},
{"null-data", no_argument, NULL, 'z'},
{NULL, no_argument, NULL, 0}
};
/*
* Adds a searching pattern to the internal array.
*/
static void
add_pattern(char *pat, size_t len)
{
/* TODO: Check for empty patterns and shortcut */
/* Increase size if necessary */
if (patterns == pattern_sz) {
pattern_sz *= 2;
pattern = grep_realloc(pattern, ++pattern_sz *
sizeof(*pattern));
}
if (len > 0 && pat[len - 1] == '\n')
--len;
/* pat may not be NUL-terminated */
pattern[patterns] = grep_malloc(len + 1);
memcpy(pattern[patterns], pat, len);
pattern[patterns][len] = '\0';
++patterns;
}
/*
* Adds a file include/exclude pattern to the internal array.
*/
static void
add_fpattern(const char *pat, int mode)
{
/* Increase size if necessary */
if (fpatterns == fpattern_sz) {
fpattern_sz *= 2;
fpattern = grep_realloc(fpattern, ++fpattern_sz *
sizeof(struct epat));
}
fpattern[fpatterns].pat = grep_strdup(pat);
fpattern[fpatterns].mode = mode;
++fpatterns;
}
/*
* Adds a directory include/exclude pattern to the internal array.
*/
static void
add_dpattern(const char *pat, int mode)
{
/* Increase size if necessary */
if (dpatterns == dpattern_sz) {
dpattern_sz *= 2;
dpattern = grep_realloc(dpattern, ++dpattern_sz *
sizeof(struct epat));
}
dpattern[dpatterns].pat = grep_strdup(pat);
dpattern[dpatterns].mode = mode;
++dpatterns;
}
/*
* Reads searching patterns from a file and adds them with add_pattern().
*/
static void
read_patterns(const char *fn)
{
FILE *f;
char *line;
size_t len;
ssize_t rlen;
if ((f = fopen(fn, "r")) == NULL)
err(2, "%s", fn);
line = NULL;
len = 0;
while ((rlen = getline(&line, &len, f)) != -1)
add_pattern(line, *line == '\n' ? 0 : (size_t)rlen);
free(line);
if (ferror(f))
err(2, "%s", fn);
fclose(f);
}
static inline const char *
init_color(const char *d)
{
char *c;
c = getenv("GREP_COLOR");
return (c != NULL ? c : d);
}
int
main(int argc, char *argv[])
{
char **aargv, **eargv, *eopts;
char *ep;
unsigned long long l;
unsigned int aargc, eargc, i, j;
int c, lastc, needpattern, newarg, prevoptind;
setlocale(LC_ALL, "");
#ifndef WITHOUT_NLS
catalog = catopen("grep", NL_CAT_LOCALE);
#endif
/* Check what is the program name of the binary. In this
way we can have all the funcionalities in one binary
without the need of scripting and using ugly hacks. */
switch (__progname[0]) {
case 'e':
grepbehave = GREP_EXTENDED;
break;
case 'f':
grepbehave = GREP_FIXED;
break;
case 'g':
grepbehave = GREP_BASIC;
break;
case 'z':
filebehave = FILE_GZIP;
switch(__progname[1]) {
case 'e':
grepbehave = GREP_EXTENDED;
break;
case 'f':
grepbehave = GREP_FIXED;
break;
case 'g':
grepbehave = GREP_BASIC;
break;
}
break;
}
lastc = '\0';
newarg = 1;
prevoptind = 1;
needpattern = 1;
eopts = getenv("GREP_OPTIONS");
/* support for extra arguments in GREP_OPTIONS */
eargc = 0;
if (eopts != NULL) {
char *str;
/* make an estimation of how many extra arguments we have */
for (j = 0; j < strlen(eopts); j++)
if (eopts[j] == ' ')
eargc++;
eargv = (char **)grep_malloc(sizeof(char *) * (eargc + 1));
eargc = 0;
/* parse extra arguments */
while ((str = strsep(&eopts, " ")) != NULL)
eargv[eargc++] = grep_strdup(str);
aargv = (char **)grep_calloc(eargc + argc + 1,
sizeof(char *));
aargv[0] = argv[0];
for (i = 0; i < eargc; i++)
aargv[i + 1] = eargv[i];
for (j = 1; j < (unsigned int)argc; j++, i++)
aargv[i + 1] = argv[j];
aargc = eargc + argc;
} else {
aargv = argv;
aargc = argc;
}
while (((c = getopt_long(aargc, aargv, optstr, long_options, NULL)) !=
-1)) {
switch (c) {
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
if (newarg || !isdigit(lastc))
Aflag = 0;
else if (Aflag > LLONG_MAX / 10) {
errno = ERANGE;
err(2, NULL);
}
Aflag = Bflag = (Aflag * 10) + (c - '0');
break;
case 'C':
if (optarg == NULL) {
Aflag = Bflag = 2;
break;
}
/* FALLTHROUGH */
case 'A':
/* FALLTHROUGH */
case 'B':
errno = 0;
l = strtoull(optarg, &ep, 10);
if (((errno == ERANGE) && (l == ULLONG_MAX)) ||
((errno == EINVAL) && (l == 0)))
err(2, NULL);
else if (ep[0] != '\0') {
errno = EINVAL;
err(2, NULL);
}
if (c == 'A')
Aflag = l;
else if (c == 'B')
Bflag = l;
else
Aflag = Bflag = l;
break;
case 'a':
binbehave = BINFILE_TEXT;
break;
case 'b':
bflag = true;
break;
case 'c':
cflag = true;
break;
case 'D':
if (strcasecmp(optarg, "skip") == 0)
devbehave = DEV_SKIP;
else if (strcasecmp(optarg, "read") == 0)
devbehave = DEV_READ;
else
errx(2, getstr(3), "--devices");
break;
case 'd':
if (strcasecmp("recurse", optarg) == 0) {
Hflag = true;
dirbehave = DIR_RECURSE;
} else if (strcasecmp("skip", optarg) == 0)
dirbehave = DIR_SKIP;
else if (strcasecmp("read", optarg) == 0)
dirbehave = DIR_READ;
else
errx(2, getstr(3), "--directories");
break;
case 'E':
grepbehave = GREP_EXTENDED;
break;
case 'e':
add_pattern(optarg, strlen(optarg));
needpattern = 0;
break;
case 'F':
grepbehave = GREP_FIXED;
break;
case 'f':
read_patterns(optarg);
needpattern = 0;
break;
case 'G':
grepbehave = GREP_BASIC;
break;
case 'H':
Hflag = true;
break;
case 'h':
Hflag = false;
hflag = true;
break;
case 'I':
binbehave = BINFILE_SKIP;
break;
case 'i':
case 'y':
iflag = true;
cflags |= REG_ICASE;
break;
case 'J':
filebehave = FILE_BZIP;
break;
case 'L':
lflag = false;
Lflag = true;
break;
case 'l':
Lflag = false;
lflag = true;
break;
case 'm':
mflag = true;
errno = 0;
mcount = strtoull(optarg, &ep, 10);
if (((errno == ERANGE) && (mcount == ULLONG_MAX)) ||
((errno == EINVAL) && (mcount == 0)))
err(2, NULL);
else if (ep[0] != '\0') {
errno = EINVAL;
err(2, NULL);
}
break;
case 'n':
nflag = true;
break;
case 'O':
linkbehave = LINK_EXPLICIT;
break;
case 'o':
oflag = true;
break;
case 'p':
linkbehave = LINK_SKIP;
break;
case 'q':
qflag = true;
break;
case 'S':
linkbehave = LINK_READ;
break;
case 'R':
case 'r':
dirbehave = DIR_RECURSE;
Hflag = true;
break;
case 's':
sflag = true;
break;
case 'U':
binbehave = BINFILE_BIN;
break;
case 'u':
case MMAP_OPT:
/* noop, compatibility */
break;
case 'V':
printf(getstr(9), __progname, VERSION);
exit(0);
case 'v':
vflag = true;
break;
case 'w':
wflag = true;
break;
case 'x':
xflag = true;
break;
case 'Z':
nullflag = true;
break;
case 'z':
nulldataflag = true;
line_sep = '\0';
break;
case BIN_OPT:
if (strcasecmp("binary", optarg) == 0)
binbehave = BINFILE_BIN;
else if (strcasecmp("without-match", optarg) == 0)
binbehave = BINFILE_SKIP;
else if (strcasecmp("text", optarg) == 0)
binbehave = BINFILE_TEXT;
else
errx(2, getstr(3), "--binary-files");
break;
case COLOR_OPT:
color = NULL;
if (optarg == NULL || strcasecmp("auto", optarg) == 0 ||
strcasecmp("tty", optarg) == 0 ||
strcasecmp("if-tty", optarg) == 0) {
char *term;
term = getenv("TERM");
if (isatty(STDOUT_FILENO) && term != NULL &&
strcasecmp(term, "dumb") != 0)
color = init_color("01;31");
} else if (strcasecmp("always", optarg) == 0 ||
strcasecmp("yes", optarg) == 0 ||
strcasecmp("force", optarg) == 0) {
color = init_color("01;31");
} else if (strcasecmp("never", optarg) != 0 &&
strcasecmp("none", optarg) != 0 &&
strcasecmp("no", optarg) != 0)
errx(2, getstr(3), "--color");
break;
case DECOMPRESS_OPT:
filebehave = FILE_GZIP;
break;
case LABEL_OPT:
label = optarg;
break;
case LINEBUF_OPT:
lbflag = true;
break;
case R_INCLUDE_OPT:
finclude = true;
add_fpattern(optarg, INCL_PAT);
break;
case R_EXCLUDE_OPT:
fexclude = true;
add_fpattern(optarg, EXCL_PAT);
break;
case R_DINCLUDE_OPT:
dinclude = true;
add_dpattern(optarg, INCL_PAT);
break;
case R_DEXCLUDE_OPT:
dexclude = true;
add_dpattern(optarg, EXCL_PAT);
break;
case HELP_OPT:
default:
usage();
}
lastc = c;
newarg = optind != prevoptind;
prevoptind = optind;
}
aargc -= optind;
aargv += optind;
/* Fail if we don't have any pattern */
if (aargc == 0 && needpattern)
usage();
/* Process patterns from command line */
if (aargc != 0 && needpattern) {
add_pattern(*aargv, strlen(*aargv));
--aargc;
++aargv;
}
switch (grepbehave) {
case GREP_FIXED:
case GREP_BASIC:
break;
case GREP_EXTENDED:
cflags |= REG_EXTENDED;
break;
default:
/* NOTREACHED */
usage();
}
fg_pattern = grep_calloc(patterns, sizeof(*fg_pattern));
r_pattern = grep_calloc(patterns, sizeof(*r_pattern));
/*
* XXX: fgrepcomp() and fastcomp() are workarounds for regexec() performance.
* Optimizations should be done there.
*/
/* Check if cheating is allowed (always is for fgrep). */
if (grepbehave == GREP_FIXED) {
for (i = 0; i < patterns; ++i)
fgrepcomp(&fg_pattern[i], pattern[i]);
} else {
for (i = 0; i < patterns; ++i) {
if (fastcomp(&fg_pattern[i], pattern[i])) {
/* Fall back to full regex library */
c = regcomp(&r_pattern[i], pattern[i], cflags);
if (c != 0) {
regerror(c, &r_pattern[i], re_error,
RE_ERROR_BUF);
errx(2, "%s", re_error);
}
}
}
}
if (lbflag)
setlinebuf(stdout);
if ((aargc == 0 || aargc == 1) && !Hflag)
hflag = true;
if (aargc == 0)
exit(!procfile("-"));
if (dirbehave == DIR_RECURSE)
c = grep_tree(aargv);
else
for (c = 0; aargc--; ++aargv) {
if ((finclude || fexclude) && !file_matching(*aargv))
continue;
c+= procfile(*aargv);
}
#ifndef WITHOUT_NLS
catclose(catalog);
#endif
/* Find out the correct return value according to the
results and the command line option. */
exit(c ? (notfound ? (qflag ? 0 : 2) : 0) : (notfound ? 2 : 1));
}

158
usr.bin/grep/grep.h Normal file
View file

@ -0,0 +1,158 @@
/* $NetBSD: grep.h,v 1.8 2012/05/06 22:27:00 joerg Exp $ */
/* $OpenBSD: grep.h,v 1.15 2010/04/05 03:03:55 tedu Exp $ */
/* $FreeBSD: head/usr.bin/grep/grep.h 211496 2010-08-19 09:28:59Z des $ */
/*-
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* Copyright (c) 2008-2009 Gabor Kovesdan <gabor@FreeBSD.org>
* 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 AUTHOR 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 AUTHOR 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.
*/
#include <bzlib.h>
#include <limits.h>
#include <regex.h>
#include <stdbool.h>
#include <stdio.h>
#include <zlib.h>
#ifdef WITHOUT_NLS
#define getstr(n) errstr[n]
#else
#include <nl_types.h>
extern nl_catd catalog;
#define getstr(n) catgets(catalog, 1, n, errstr[n])
#endif
extern const char *errstr[];
#define VERSION "2.5.1-FreeBSD"
#define GREP_FIXED 0
#define GREP_BASIC 1
#define GREP_EXTENDED 2
#define BINFILE_BIN 0
#define BINFILE_SKIP 1
#define BINFILE_TEXT 2
#define FILE_STDIO 0
#define FILE_GZIP 1
#define FILE_BZIP 2
#define DIR_READ 0
#define DIR_SKIP 1
#define DIR_RECURSE 2
#define DEV_READ 0
#define DEV_SKIP 1
#define LINK_READ 0
#define LINK_EXPLICIT 1
#define LINK_SKIP 2
#define EXCL_PAT 0
#define INCL_PAT 1
#define MAX_LINE_MATCHES 32
struct file {
int fd;
bool binary;
};
struct str {
off_t off;
size_t len;
char *dat;
char *file;
int line_no;
};
struct epat {
char *pat;
int mode;
};
typedef struct {
size_t len;
unsigned char *pattern;
int qsBc[UCHAR_MAX + 1];
/* flags */
bool bol;
bool eol;
bool reversed;
bool word;
} fastgrep_t;
/* Flags passed to regcomp() and regexec() */
extern int cflags, eflags;
/* Command line flags */
extern bool Eflag, Fflag, Gflag, Hflag, Lflag,
bflag, cflag, hflag, iflag, lflag, mflag, nflag, oflag,
qflag, sflag, vflag, wflag, xflag;
extern bool dexclude, dinclude, fexclude, finclude, lbflag, nullflag, nulldataflag;
extern unsigned char line_sep;
extern unsigned long long Aflag, Bflag, mcount;
extern char *label;
extern const char *color;
extern int binbehave, devbehave, dirbehave, filebehave, grepbehave, linkbehave;
extern bool notfound;
extern int tail;
extern unsigned int dpatterns, fpatterns, patterns;
extern char **pattern;
extern struct epat *dpattern, *fpattern;
extern regex_t *er_pattern, *r_pattern;
extern fastgrep_t *fg_pattern;
/* For regex errors */
#define RE_ERROR_BUF 512
extern char re_error[RE_ERROR_BUF + 1]; /* Seems big enough */
/* util.c */
bool file_matching(const char *fname);
int procfile(const char *fn);
int grep_tree(char **argv);
void *grep_malloc(size_t size);
void *grep_calloc(size_t nmemb, size_t size);
void *grep_realloc(void *ptr, size_t size);
char *grep_strdup(const char *str);
void printline(struct str *line, int sep, regmatch_t *matches, int m);
/* queue.c */
void enqueue(struct str *x);
void printqueue(void);
void clearqueue(void);
/* file.c */
void grep_close(struct file *f);
struct file *grep_open(const char *path);
char *grep_fgetln(struct file *f, size_t *len);
/* fastgrep.c */
int fastcomp(fastgrep_t *, const char *);
void fgrepcomp(fastgrep_t *, const char *);
int grep_search(fastgrep_t *, const unsigned char *, size_t, regmatch_t *);

13
usr.bin/grep/nls/C.msg Normal file
View file

@ -0,0 +1,13 @@
$ $FreeBSD: head/usr.bin/grep/nls/C.msg 210622 2010-07-29 18:02:57Z gabor $
$
$set 1
$quote "
1 "(standard input)"
2 "cannot read bzip2 compressed file"
3 "unknown %s option"
4 "usage: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A num] [-B num] [-C[num]]\n"
5 "\t[-e pattern] [-f file] [--binary-files=value] [--color=when]\n"
6 "\t[--context[=num]] [--directories=action] [--label] [--line-buffered]\n"
7 "\t[pattern] [file ...]\n"
8 "Binary file %s matches\n"
9 "%s (BSD grep) %s\n"

14
usr.bin/grep/nls/es_ES.ISO8859-1.msg Normal file
View file

@ -0,0 +1,14 @@
$ $NetBSD: es_ES.ISO8859-1.msg,v 1.2 2011/04/18 22:46:48 joerg Exp $
$ $FreeBSD: head/usr.bin/grep/nls/es_ES.ISO8859-1.msg 210622 2010-07-29 18:02:57Z gabor $
$
$set 1
$quote "
1 "(entrada estándar)"
2 "no se puede leer el fichero comprimido bzip2"
3 "opción desconocida de %s"
4 "uso: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A no] [-B no] [-C[no]]\n"
5 "\t[-e pauta] [-f fichero] [--binary-files=valor] [--color=cuando]\n"
6 "\t[--context[=no]] [--directories=acción] [--label] [--line-buffered]\n"
7 "\t[pauta] [fichero ...]\n"
8 "fichero binario %s se ajusta\n"
9 "%s (BSD grep) %s\n"

14
usr.bin/grep/nls/gl_ES.ISO8859-1.msg Normal file
View file

@ -0,0 +1,14 @@
$ $NetBSD: gl_ES.ISO8859-1.msg,v 1.2 2011/04/18 22:46:48 joerg Exp $
$ $FreeBSD: head/usr.bin/grep/nls/gl_ES.ISO8859-1.msg 210622 2010-07-29 18:02:57Z gabor $
$
$set 1
$quote "
1 "(entrada estándar)"
2 "non se pode ler o ficheiro comprimido bzip2"
3 "opción descoñecida de %s"
4 "uso: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A no] [-B no] [-C[no]]\n"
5 "\t[-e pauta] [-f ficheiro] [--binary-files=valor] [--color=cando]\n"
6 "\t[--context[=no]] [--directories=acción] [--label] [--line-buffered]\n"
7 "\t[pauta] [ficheiro ...]\n"
8 "ficheiro binario %s conforma\n"
9 "%s (BSD grep) %s\n"

14
usr.bin/grep/nls/hu_HU.ISO8859-2.msg Normal file
View file

@ -0,0 +1,14 @@
$ $NetBSD: hu_HU.ISO8859-2.msg,v 1.2 2011/04/18 22:46:48 joerg Exp $
$ $FreeBSD: head/usr.bin/grep/nls/hu_HU.ISO8859-2.msg 210622 2010-07-29 18:02:57Z gabor $
$
$set 1
$quote "
1 "(szabványos bemenet)"
2 "bzip2 tömörített fájl nem olvasható"
3 "ismeretlen %s opció"
4 "használat: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A szám] [-B szám] [-C[szám]]\n"
5 "\t[-e minta] [-f fájl] [--binary-files=érték] [--color=mikor]\n"
6 "\t[--context[=szám]] [--directories=művelet] [--label] [--line-buffered]\n"
7 "\t[minta] [fájl ...]\n"
8 "%s bináris fájl illeszkedik\n"
9 "%s (BSD grep) %s\n"

14
usr.bin/grep/nls/ja_JP.SJIS.msg Normal file
View file

@ -0,0 +1,14 @@
$ $NetBSD: ja_JP.SJIS.msg,v 1.2 2011/04/18 22:46:48 joerg Exp $
$ $FreeBSD: head/usr.bin/grep/nls/ja_JP.SJIS.msg 210622 2010-07-29 18:02:57Z gabor $
$
$set 1
$quote "
1 "(標準入力)"
2 "bzip2 圧縮ファイルを読み込むことができません"
3 "%s オプションの指定値に誤りがあります"
4 "使い方: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A 数字] [-B 数字] [-C[数字]]\n"
5 "\t[-e パターン] [-f ファイル名] [--binary-files=値] [--color=値]\n"
6 "\t[--context[=数字]] [--directories=動作] [--label] [--line-buffered]\n"
7 "\t[パターン] [ファイル名 ...]\n"
8 "バイナリファイル %s にマッチしました\n"
9 "%s (BSD grep) %s\n"

14
usr.bin/grep/nls/ja_JP.UTF-8.msg Normal file
View file

@ -0,0 +1,14 @@
$ $NetBSD: ja_JP.UTF-8.msg,v 1.2 2011/04/18 22:46:48 joerg Exp $
$ $FreeBSD: head/usr.bin/grep/nls/ja_JP.UTF-8.msg 210622 2010-07-29 18:02:57Z gabor $
$
$set 1
$quote "
1 "(標準入力)"
2 "bzip2 圧縮ファイルを読み込むことができません"
3 "%s オプションの指定値に誤りがあります"
4 "使い方: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A 数字] [-B 数字] [-C[数字]]\n"
5 "\t[-e パターン] [-f ファイル名] [--binary-files=値] [--color=値]\n"
6 "\t[--context[=数字]] [--directories=動作] [--label] [--line-buffered]\n"
7 "\t[パターン] [ファイル名 ...]\n"
8 "バイナリファイル %s にマッチしました\n"
9 "%s (BSD grep) %s\n"

14
usr.bin/grep/nls/ja_JP.eucJP.msg Normal file
View file

@ -0,0 +1,14 @@
$ $NetBSD: ja_JP.eucJP.msg,v 1.2 2011/04/18 22:46:48 joerg Exp $
$ $FreeBSD: head/usr.bin/grep/nls/ja_JP.eucJP.msg 210622 2010-07-29 18:02:57Z gabor $
$
$set 1
$quote "
1 "(標準入力)"
2 "bzip2 圧縮ファイルを読み込むことができません"
3 "%s オプションの指定値に誤りがあります"
4 "使い方: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A 数字] [-B 数字] [-C[数字]]\n"
5 "\t[-e パターン] [-f ファイル名] [--binary-files=値] [--color=値]\n"
6 "\t[--context[=数字]] [--directories=動作] [--label] [--line-buffered]\n"
7 "\t[パターン] [ファイル名 ...]\n"
8 "バイナリファイル %s にマッチしました\n"
9 "%s (BSD grep) %s\n"

14
usr.bin/grep/nls/pt_BR.ISO8859-1.msg Normal file
View file

@ -0,0 +1,14 @@
$ $NetBSD: pt_BR.ISO8859-1.msg,v 1.2 2011/04/18 22:46:48 joerg Exp $
$ $FreeBSD: head/usr.bin/grep/nls/pt_BR.ISO8859-1.msg 210622 2010-07-29 18:02:57Z gabor $
$
$set 1
$quote "
1 "(entrada padrão)"
2 "não se posso ler o fichero comprimido bzip2"
3 "opcão não conhecida de %s"
4 "uso: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A num] [-B num] [-C[num]]\n"
5 "\t[-e padrão] [-f arquivo] [--binary-files=valor] [--color=quando]\n"
6 "\t[--context[=num]] [--directories=ação] [--label] [--line-buffered]\n"
7 "\t[padrão] [arquivo ...]\n"
8 "arquivo binário %s casa com o padrão\n"
9 "%s (BSD grep) %s\n"

14
usr.bin/grep/nls/ru_RU.KOI8-R.msg Normal file
View file

@ -0,0 +1,14 @@
$ $NetBSD: ru_RU.KOI8-R.msg,v 1.2 2011/04/18 22:46:48 joerg Exp $
$ $FreeBSD: head/usr.bin/grep/nls/ru_RU.KOI8-R.msg 210622 2010-07-29 18:02:57Z gabor $
$
$set 1
$quote "
1 "(стандартный ввод)"
2 "не могу прочитать сжатый в bzip2 файл"
3 "неизвестный ключ %s"
4 "использование: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A чис] [-B чис] [-C[чис]]\n"
5 "\t[-e шаблон] [-f файл] [--binary-files=значение] [--color=когда]\n"
6 "\t[--context[=чис]] [--directories=действие] [--label] [--line-buffered]\n"
7 "\t[шаблон] [файл ...]\n"
8 "двоичный файл %s совпадает\n"
9 "%s (BSD grep) %s\n"

13
usr.bin/grep/nls/uk_UA.UTF-8.msg Normal file
View file

@ -0,0 +1,13 @@
$ $NetBSD: uk_UA.UTF-8.msg,v 1.2 2011/04/18 22:46:48 joerg Exp $
$ $FreeBSD: head/usr.bin/grep/nls/uk_UA.UTF-8.msg 210927 2010-08-06 10:34:48Z gabor $
$set 1
$quote "
1 "(стандартний ввід)"
2 "не можу прочитати стиснутий bzip2 файл"
3 "невiдома опція %s"
4 "використання: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A чис] [-B чис] [-C[чис]]\n"
5 "\t[-e шаблон] [-f файл] [--binary-files=значення] [--color=коли]\n"
6 "\t[--context[=чис] [--directories=дія] [--label] [--line-buffered]\n"
7 "\t[шаблон] [файл ...]\n"
8 "двійковий файл %s співпадає\n"
9 "%s (BSD grep) %s\n"

14
usr.bin/grep/nls/zh_CN.UTF-8.msg Normal file
View file

@ -0,0 +1,14 @@
$ $NetBSD: zh_CN.UTF-8.msg,v 1.2 2011/04/18 22:46:48 joerg Exp $
$ $FreeBSD: head/usr.bin/grep/nls/zh_CN.UTF-8.msg 212927 2010-09-20 19:42:52Z delphij $
$
$set 1
$quote "
1 "(标准输入)"
2 "读取 bzip2 压缩文件时出错"
3 "选项 %s 无法识别"
4 "用法： %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZz] [-A 行数] [-B 行数] [-C[行数]]\n"
5 "\t[-e 模式] [-f 文件] [--binary-files=值] [--color=何时]\n"
6 "\t[--context[=行数]] [--directories=动作] [--label] [--line-buffered]\n"
7 "\t[模式] [文件名 ...]\n"
8 "二进制文件 %s 包含模式\n"
9 "%s (BSD grep) %s\n"

96
minix/commands/grep/queue.c → usr.bin/grep/queue.c
View file

@ -1,7 +1,7 @@
/* $OpenBSD: queue.c,v 1.4 2003/06/25 05:31:11 deraadt Exp $ */
/* $NetBSD: queue.c,v 1.5 2011/08/31 16:24:57 plunky Exp $ */
/* $FreeBSD: head/usr.bin/grep/queue.c 211496 2010-08-19 09:28:59Z des $ */
/*-
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -28,95 +28,89 @@
/*
* A really poor man's queue. It does only what it has to and gets out of
* Dodge.
* Dodge. It is used in place of <sys/queue.h> to get a better performance.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
__RCSID("$NetBSD: queue.c,v 1.5 2011/08/31 16:24:57 plunky Exp $");
#include <sys/param.h>
#include <sys/queue.h>
#include <stdlib.h>
#include <string.h>
#include "grep.h"
typedef struct queue {
struct queue *next;
str_t data;
} queue_t;
struct qentry {
STAILQ_ENTRY(qentry) list;
struct str data;
};
static queue_t *q_head, *q_tail;
static int count;
static STAILQ_HEAD(, qentry) queue = STAILQ_HEAD_INITIALIZER(queue);
static unsigned long long count;
static queue_t *dequeue(void);
static struct qentry *dequeue(void);
void
initqueue(void)
enqueue(struct str *x)
{
q_head = q_tail = NULL;
}
struct qentry *item;
static void
free_item(queue_t *item)
{
free(item);
}
void
enqueue(str_t *x)
{
queue_t *item;
item = grep_malloc(sizeof *item + x->len);
item = grep_malloc(sizeof(struct qentry));
item->data.dat = grep_malloc(sizeof(char) * x->len);
item->data.len = x->len;
item->data.line_no = x->line_no;
item->data.off = x->off;
item->data.dat = (char *)item + sizeof *item;
memcpy(item->data.dat, x->dat, x->len);
item->data.file = x->file;
item->next = NULL;
if (!q_head) {
q_head = q_tail = item;
} else {
q_tail->next = item;
q_tail = item;
STAILQ_INSERT_TAIL(&queue, item, list);
if (++count > Bflag) {
item = dequeue();
free(item->data.dat);
free(item);
}
if (++count > Bflag)
free_item(dequeue());
}
static queue_t *
static struct qentry *
dequeue(void)
{
queue_t *item;
struct qentry *item;
if (q_head == NULL)
return NULL;
item = STAILQ_FIRST(&queue);
if (item == NULL)
return (NULL);
STAILQ_REMOVE_HEAD(&queue, list);
--count;
item = q_head;
q_head = item->next;
if (q_head == NULL)
q_tail = NULL;
return item;
return (item);
}
void
printqueue(void)
{
queue_t *item;
struct qentry *item;
while ((item = dequeue()) != NULL) {
printline(&item->data, '-');
free_item(item);
printline(&item->data, '-', NULL, 0);
free(item->data.dat);
free(item);
}
}
void
clearqueue(void)
{
queue_t *item;
struct qentry *item;
while ((item = dequeue()) != NULL)
free_item(item);
while ((item = dequeue()) != NULL) {
free(item->data.dat);
free(item);
}
}

499
usr.bin/grep/util.c Normal file
View file

@ -0,0 +1,499 @@
/* $NetBSD: util.c,v 1.17 2013/01/21 03:24:43 msaitoh Exp $ */
/* $FreeBSD: head/usr.bin/grep/util.c 211496 2010-08-19 09:28:59Z des $ */
/* $OpenBSD: util.c,v 1.39 2010/07/02 22:18:03 tedu Exp $ */
/*-
* Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav
* Copyright (C) 2008-2010 Gabor Kovesdan <gabor@FreeBSD.org>
* 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 AUTHOR 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 AUTHOR 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.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
__RCSID("$NetBSD: util.c,v 1.17 2013/01/21 03:24:43 msaitoh Exp $");
#include <sys/stat.h>
#include <sys/types.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fnmatch.h>
#include <fts.h>
#include <libgen.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>
#include <wctype.h>
#include "grep.h"
static bool first, first_global = true;
static unsigned long long since_printed;
static int procline(struct str *l, int);
bool
file_matching(const char *fname)
{
char *fname_base, *fname_copy;
unsigned int i;
bool ret;
ret = finclude ? false : true;
fname_copy = grep_strdup(fname);
fname_base = basename(fname_copy);
for (i = 0; i < fpatterns; ++i) {
if (fnmatch(fpattern[i].pat, fname, 0) == 0 ||
fnmatch(fpattern[i].pat, fname_base, 0) == 0) {
if (fpattern[i].mode == EXCL_PAT) {
free(fname_copy);
return (false);
} else
ret = true;
}
}
free(fname_copy);
return (ret);
}
static inline bool
dir_matching(const char *dname)
{
unsigned int i;
bool ret;
ret = dinclude ? false : true;
for (i = 0; i < dpatterns; ++i) {
if (dname != NULL &&
fnmatch(dname, dpattern[i].pat, 0) == 0) {
if (dpattern[i].mode == EXCL_PAT)
return (false);
else
ret = true;
}
}
return (ret);
}
/*
* Processes a directory when a recursive search is performed with
* the -R option. Each appropriate file is passed to procfile().
*/
int
grep_tree(char **argv)
{
FTS *fts;
FTSENT *p;
char *d, *dir = NULL;
int c, fts_flags;
bool ok;
c = fts_flags = 0;
switch(linkbehave) {
case LINK_EXPLICIT:
fts_flags = FTS_COMFOLLOW;
break;
case LINK_SKIP:
fts_flags = FTS_PHYSICAL;
break;
default:
fts_flags = FTS_LOGICAL;
}
fts_flags |= FTS_NOSTAT | FTS_NOCHDIR;
if (!(fts = fts_open(argv, fts_flags, NULL)))
err(2, "fts_open");
while ((p = fts_read(fts)) != NULL) {
switch (p->fts_info) {
case FTS_DNR:
/* FALLTHROUGH */
case FTS_ERR:
errx(2, "%s: %s", p->fts_path, strerror(p->fts_errno));
break;
case FTS_D:
/* FALLTHROUGH */
case FTS_DP:
break;
case FTS_DC:
/* Print a warning for recursive directory loop */
warnx("warning: %s: recursive directory loop",
p->fts_path);
break;
default:
/* Check for file exclusion/inclusion */
ok = true;
if (dexclude || dinclude) {
if ((d = strrchr(p->fts_path, '/')) != NULL) {
dir = grep_malloc(sizeof(char) *
(d - p->fts_path + 1));
memcpy(dir, p->fts_path,
d - p->fts_path);
dir[d - p->fts_path] = '\0';
}
ok = dir_matching(dir);
free(dir);
dir = NULL;
}
if (fexclude || finclude)
ok &= file_matching(p->fts_path);
if (ok)
c += procfile(p->fts_path);
break;
}
}
fts_close(fts);
return (c);
}
/*
* Opens a file and processes it. Each file is processed line-by-line
* passing the lines to procline().
*/
int
procfile(const char *fn)
{
struct file *f;
struct stat sb;
struct str ln;
mode_t s;
int c, t;
if (mflag && (mcount <= 0))
return (0);
if (strcmp(fn, "-") == 0) {
fn = label != NULL ? label : getstr(1);
f = grep_open(NULL);
} else {
if (!stat(fn, &sb)) {
/* Check if we need to process the file */
s = sb.st_mode & S_IFMT;
if (s == S_IFDIR && dirbehave == DIR_SKIP)
return (0);
if ((s == S_IFIFO || s == S_IFCHR || s == S_IFBLK
|| s == S_IFSOCK) && devbehave == DEV_SKIP)
return (0);
}
f = grep_open(fn);
}
if (f == NULL) {
if (!sflag)
warn("%s", fn);
if (errno == ENOENT)
notfound = true;
return (0);
}
ln.file = grep_malloc(strlen(fn) + 1);
strcpy(ln.file, fn);
ln.line_no = 0;
ln.len = 0;
tail = 0;
ln.off = -1;
for (first = true, c = 0; c == 0 || !(lflag || qflag); ) {
ln.off += ln.len + 1;
if ((ln.dat = grep_fgetln(f, &ln.len)) == NULL || ln.len == 0)
break;
if (ln.len > 0 && ln.dat[ln.len - 1] == line_sep)
--ln.len;
ln.line_no++;
/* Return if we need to skip a binary file */
if (f->binary && binbehave == BINFILE_SKIP) {
grep_close(f);
free(ln.file);
free(f);
return (0);
}
/* Process the file line-by-line */
t = procline(&ln, f->binary);
c += t;
/* Count the matches if we have a match limit */
if (mflag) {
mcount -= t;
if (mcount <= 0)
break;
}
}
if (Bflag > 0)
clearqueue();
grep_close(f);
if (cflag) {
if (!hflag)
printf("%s:", ln.file);
printf("%u%c", c, line_sep);
}
if (lflag && !qflag && c != 0)
printf("%s%c", fn, line_sep);
if (Lflag && !qflag && c == 0)
printf("%s%c", fn, line_sep);
if (c && !cflag && !lflag && !Lflag &&
binbehave == BINFILE_BIN && f->binary && !qflag)
printf(getstr(8), fn);
free(ln.file);
free(f);
return (c);
}
#define iswword(x) (iswalnum((x)) || (x) == L'_')
/*
* Processes a line comparing it with the specified patterns. Each pattern
* is looped to be compared along with the full string, saving each and every
* match, which is necessary to colorize the output and to count the
* matches. The matching lines are passed to printline() to display the
* appropriate output.
*/
static int
procline(struct str *l, int nottext)
{
regmatch_t matches[MAX_LINE_MATCHES];
regmatch_t pmatch;
size_t st = 0;
unsigned int i;
int c = 0, m = 0, r = 0;
/* Loop to process the whole line */
while (st <= l->len) {
pmatch.rm_so = st;
pmatch.rm_eo = l->len;
/* Loop to compare with all the patterns */
for (i = 0; i < patterns; i++) {
/*
* XXX: grep_search() is a workaround for speed up and should be
* removed in the future. See fastgrep.c.
*/
if (fg_pattern[i].pattern) {
r = grep_search(&fg_pattern[i],
(unsigned char *)l->dat,
l->len, &pmatch);
r = (r == 0) ? 0 : REG_NOMATCH;
st = pmatch.rm_eo;
} else {
r = regexec(&r_pattern[i], l->dat, 1,
&pmatch, eflags);
r = (r == 0) ? 0 : REG_NOMATCH;
st = pmatch.rm_eo;
}
if (r == REG_NOMATCH)
continue;
/* Check for full match */
if (xflag &&
(pmatch.rm_so != 0 ||
(size_t)pmatch.rm_eo != l->len))
continue;
/* Check for whole word match */
if (fg_pattern[i].word && pmatch.rm_so != 0) {
wint_t wbegin, wend;
wbegin = wend = L' ';
if (pmatch.rm_so != 0 &&
sscanf(&l->dat[pmatch.rm_so - 1],
"%lc", &wbegin) != 1)
continue;
if ((size_t)pmatch.rm_eo != l->len &&
sscanf(&l->dat[pmatch.rm_eo],
"%lc", &wend) != 1)
continue;
if (iswword(wbegin) || iswword(wend))
continue;
}
c = 1;
if (m < MAX_LINE_MATCHES)
matches[m++] = pmatch;
/* matches - skip further patterns */
if ((color != NULL && !oflag) || qflag || lflag)
break;
}
if (vflag) {
c = !c;
break;
}
/* One pass if we are not recording matches */
if ((color != NULL && !oflag) || qflag || lflag)
break;
if (st == (size_t)pmatch.rm_so)
break; /* No matches */
}
if (c && binbehave == BINFILE_BIN && nottext)
return (c); /* Binary file */
/* Dealing with the context */
if ((tail || c) && !cflag && !qflag && !lflag && !Lflag) {
if (c) {
if ((Aflag || Bflag) && !first_global &&
(first || since_printed > Bflag))
printf("--\n");
tail = Aflag;
if (Bflag > 0)
printqueue();
printline(l, ':', matches, m);
} else {
printline(l, '-', matches, m);
tail--;
}
first = false;
first_global = false;
since_printed = 0;
} else {
if (Bflag)
enqueue(l);
since_printed++;
}
return (c);
}
/*
* Safe malloc() for internal use.
*/
void *
grep_malloc(size_t size)
{
void *ptr;
if ((ptr = malloc(size)) == NULL)
err(2, "malloc");
return (ptr);
}
/*
* Safe calloc() for internal use.
*/
void *
grep_calloc(size_t nmemb, size_t size)
{
void *ptr;
if ((ptr = calloc(nmemb, size)) == NULL)
err(2, "calloc");
return (ptr);
}
/*
* Safe realloc() for internal use.
*/
void *
grep_realloc(void *ptr, size_t size)
{
if ((ptr = realloc(ptr, size)) == NULL)
err(2, "realloc");
return (ptr);
}
/*
* Safe strdup() for internal use.
*/
char *
grep_strdup(const char *str)
{
char *ret;
if ((ret = strdup(str)) == NULL)
err(2, "strdup");
return (ret);
}
/*
* Prints a matching line according to the command line options.
*/
void
printline(struct str *line, int sep, regmatch_t *matches, int m)
{
size_t a = 0;
int i, n = 0;
if (!hflag) {
if (nullflag == 0)
fputs(line->file, stdout);
else {
printf("%s", line->file);
putchar(0);
}
++n;
}
if (nflag) {
if (n > 0)
putchar(sep);
printf("%d", line->line_no);
++n;
}
if (bflag) {
if (n > 0)
putchar(sep);
printf("%lld", (long long)line->off);
++n;
}
if (n)
putchar(sep);
/* --color and -o */
if ((oflag || color) && m > 0) {
for (i = 0; i < m; i++) {
if (!oflag)
fwrite(line->dat + a, matches[i].rm_so - a, 1,
stdout);
if (color)
fprintf(stdout, "\33[%sm\33[K", color);
fwrite(line->dat + matches[i].rm_so,
matches[i].rm_eo - matches[i].rm_so, 1,
stdout);
if (color)
fprintf(stdout, "\33[m\33[K");
a = matches[i].rm_eo;
if (oflag)
putchar('\n');
}
if (!oflag) {
if (line->len - a > 0)
fwrite(line->dat + a, line->len - a, 1, stdout);
putchar(line_sep);
}
} else {
fwrite(line->dat, line->len, 1, stdout);
putchar(line_sep);
}
}