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Porting grep from NetBSD

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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
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40
usr.bin/grep/Makefile Normal file
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# $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
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/* $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;
}
}

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usr.bin/grep/file.c Normal file
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/* $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;
}

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usr.bin/grep/grep.1 Normal file
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.\" $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.
.\"
.\" 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.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)grep.1 8.3 (Berkeley) 4/18/94
.\"
.Dd April 19, 2011
.Dt GREP 1
.Os
.Sh NAME
.Nm grep , egrep , fgrep ,
.Nm zgrep , zegrep , zfgrep
.Nd file pattern searcher
.Sh SYNOPSIS
.Nm grep
.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 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
.Sh DESCRIPTION
The
.Nm 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
(RE) 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.
.Pp
.Nm grep
is used for simple patterns and
basic regular expressions
.Pq BREs ;
.Nm egrep
can handle extended regular expressions
.Pq EREs .
See
.Xr re_format 7
for more information on regular expressions.
.Nm fgrep
is quicker than both
.Nm grep
and
.Nm 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.
.Pp
.Nm zgrep ,
.Nm zegrep ,
and
.Nm zfgrep
act like
.Nm grep ,
.Nm egrep ,
and
.Nm fgrep ,
respectively, but accept input files compressed with the
.Xr compress 1
or
.Xr gzip 1
compression utilities.
.Pp
The following options are available:
.Bl -tag -width indent
.It Fl A Ar num , Fl Fl after-context Ns = Ns Ar num
Print
.Ar num
lines of trailing context after each match.
See also the
.Fl B
and
.Fl C
options.
.It Fl a , Fl Fl text
Treat all files as ASCII text.
Normally
.Nm
will simply print
.Dq Binary file ... matches
if files contain binary characters.
Use of this option forces
.Nm
to output lines matching the specified pattern.
.It Fl B Ar num , Fl Fl before-context Ns = Ns Ar num
Print
.Ar num
lines of leading context before each match.
See also the
.Fl A
and
.Fl C
options.
.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 , Fl Fl context Ns = Ns Ar num
Print
.Ar num
lines of leading and trailing context surrounding each match.
The default is 2 and is equivalent to
.Fl A
.Ar 2
.Fl B
.Ar 2 .
Note:
no whitespace may be given between the option and its argument.
.It Fl c , Fl Fl count
Only a count of selected lines is written to standard output.
.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
(i.e. force
.Nm grep
to behave as
.Nm egrep ) .
.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
.Fl e
options are used to specify multiple patterns,
or when a pattern begins with a dash
.Pq Sq - .
.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
(i.e. force
.Nm grep
to behave as
.Nm fgrep ) .
.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.
Newlines are not considered part of a pattern.
If
.Ar file
is empty, nothing is matched.
.It Fl G , Fl Fl basic-regexp
Interpret
.Ar pattern
as a basic regular expression
(i.e. force
.Nm grep
to behave as traditional
.Nm grep ) .
.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.
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 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 , Fl Fl files-with-matches
Only the names of files containing selected lines are written to
standard output.
.Nm grep
will only search a file until a match has been found,
making searches potentially less expensive.
Pathnames are listed once per file searched.
If the standard input is searched, the string
.Dq (standard input)
is written.
.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.
This option is ignored if
.Fl c ,
.Fl L ,
.Fl l ,
or
.Fl q
is
specified.
.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 , 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 , 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 , Fl Fl no-messages
Silent mode.
Nonexistent and unreadable files are ignored
(i.e. their error messages are suppressed).
.It Fl U , Fl Fl binary
Search binary files, but do not attempt to print them.
.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 , 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 , Fl Fl line-regexp
Only input lines selected against an entire fixed string or regular
expression are considered to be matching lines.
.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
.Ar binary ,
the default: search binary files but do not print them;
.Ar without-match :
do not search binary files;
and
.Ar text :
treat all files as text.
.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
and block buffered otherwise.
.Pp
.El
If no file arguments are specified, the standard input is used.
.Sh EXIT STATUS
The
.Nm grep
utility exits with one of the following values:
.Pp
.Bl -tag -width flag -compact
.It Li 0
One or more lines were selected.
.It Li 1
No lines were selected.
.It Li \*(Gt1
An error occurred.
.El
.Sh EXAMPLES
To find all occurrences of the word
.Sq patricia
in a file:
.Pp
.Dl $ grep 'patricia' myfile
.Pp
To find all occurrences of the pattern
.Ql .Pp
at the beginning of a line:
.Pp
.Dl $ grep '^\e.Pp' myfile
.Pp
The apostrophes ensure the entire expression is evaluated by
.Nm grep
instead of by the user's shell.
The caret
.Ql ^
matches the null string at the beginning of a line,
and the
.Ql \e
escapes the
.Ql \&. ,
which would otherwise match any character.
.Pp
To find all lines in a file which do not contain the words
.Sq foo
or
.Sq bar :
.Pp
.Dl $ grep -v -e 'foo' -e 'bar' myfile
.Pp
A simple example of an extended regular expression:
.Pp
.Dl $ egrep '19|20|25' calendar
.Pp
Peruses the file
.Sq calendar
looking for either 19, 20, or 25.
.Sh SEE ALSO
.Xr ed 1 ,
.Xr ex 1 ,
.Xr gzip 1 ,
.Xr sed 1 ,
.Xr re_format 7
.Sh STANDARDS
The
.Nm
utility is compliant with the
.St -p1003.1-2008
specification.
.Pp
The flags
.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.
.Pp
All long options are provided for compatibility with
GNU versions of this utility.
.Pp
Historic versions of the
.Nm grep
utility also supported the flags
.Op Fl ruy .
This implementation supports those options;
however, their use is strongly discouraged.
.Sh HISTORY
The
.Nm grep
command first appeared in
.At v6 .

708
usr.bin/grep/grep.c Normal file
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@@ -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
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@@ -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
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@@ -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"

116
usr.bin/grep/queue.c Normal file
View File

@@ -0,0 +1,116 @@
/* $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
* 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.
*/
/*
* A really poor man's queue. It does only what it has to and gets out of
* 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"
struct qentry {
STAILQ_ENTRY(qentry) list;
struct str data;
};
static STAILQ_HEAD(, qentry) queue = STAILQ_HEAD_INITIALIZER(queue);
static unsigned long long count;
static struct qentry *dequeue(void);
void
enqueue(struct str *x)
{
struct qentry *item;
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;
memcpy(item->data.dat, x->dat, x->len);
item->data.file = x->file;
STAILQ_INSERT_TAIL(&queue, item, list);
if (++count > Bflag) {
item = dequeue();
free(item->data.dat);
free(item);
}
}
static struct qentry *
dequeue(void)
{
struct qentry *item;
item = STAILQ_FIRST(&queue);
if (item == NULL)
return (NULL);
STAILQ_REMOVE_HEAD(&queue, list);
--count;
return (item);
}
void
printqueue(void)
{
struct qentry *item;
while ((item = dequeue()) != NULL) {
printline(&item->data, '-', NULL, 0);
free(item->data.dat);
free(item);
}
}
void
clearqueue(void)
{
struct qentry *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);
}
}