diff options
Diffstat (limited to 'text_cmds/grep')
| -rw-r--r-- | text_cmds/grep/file.c | 347 | ||||
| -rw-r--r-- | text_cmds/grep/grep.1 | 500 | ||||
| -rw-r--r-- | text_cmds/grep/grep.c | 783 | ||||
| -rw-r--r-- | text_cmds/grep/grep.h | 161 | ||||
| -rw-r--r-- | text_cmds/grep/queue.c | 107 | ||||
| -rw-r--r-- | text_cmds/grep/util.c | 599 |
6 files changed, 2497 insertions, 0 deletions
diff --git a/text_cmds/grep/file.c b/text_cmds/grep/file.c new file mode 100644 index 0000000..54d8772 --- /dev/null +++ b/text_cmds/grep/file.c @@ -0,0 +1,347 @@ +/* $NetBSD: file.c,v 1.5 2011/02/16 18:35:39 joerg Exp $ */ +/* $FreeBSD: src/usr.bin/grep/file.c,v 1.7 2011/10/11 22:27:23 gabor Exp $ */ +/* $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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD: src/usr.bin/grep/file.c,v 1.7 2011/10/11 22:27:23 gabor Exp $"); + +#include <sys/param.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <sys/types.h> + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#ifndef WITHOUT_LZMA +#include <lzma.h> +#endif +#include <stddef.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <wchar.h> +#include <wctype.h> +#include <zlib.h> + +#ifndef WITHOUT_BZIP2 +#include <bzlib.h> +#endif + +#include "grep.h" + +#define MAXBUFSIZ (32 * 1024) +#define LNBUFBUMP 80 + +static gzFile gzbufdesc; +#ifndef WITHOUT_LZMA +static lzma_stream lstrm = LZMA_STREAM_INIT; +#endif +#ifndef WITHOUT_BZIP2 +static BZFILE* bzbufdesc; +#endif + +static unsigned char *buffer; +static unsigned char *bufpos; +static size_t bufrem; +static size_t fsiz; + +static unsigned char *lnbuf; +static size_t lnbuflen; + +static inline int +grep_refill(struct file *f) +{ + ssize_t nr; + + if (filebehave == FILE_MMAP) + return (0); + + bufpos = buffer; + bufrem = 0; + + if (filebehave == FILE_GZIP) { + nr = gzread(gzbufdesc, buffer, MAXBUFSIZ); +#ifndef WITHOUT_BZIP2 + } else if (filebehave == FILE_BZIP && bzbufdesc != NULL) { + int bzerr; + + 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; + } +#endif +#ifndef WITHOUT_LZMA + } else if ((filebehave == FILE_XZ) || (filebehave == FILE_LZMA)) { + lzma_action action = LZMA_RUN; + uint8_t in_buf[MAXBUFSIZ]; + lzma_ret ret; + + ret = (filebehave == FILE_XZ) ? + lzma_stream_decoder(&lstrm, UINT64_MAX, + LZMA_CONCATENATED) : + lzma_alone_decoder(&lstrm, UINT64_MAX); + + if (ret != LZMA_OK) + return (-1); + + lstrm.next_out = buffer; + lstrm.avail_out = MAXBUFSIZ; + lstrm.next_in = in_buf; + nr = read(f->fd, in_buf, MAXBUFSIZ); + + if (nr < 0) + return (-1); + else if (nr == 0) + action = LZMA_FINISH; + + lstrm.avail_in = nr; + ret = lzma_code(&lstrm, action); + + if (ret != LZMA_OK && ret != LZMA_STREAM_END) + return (-1); + bufrem = MAXBUFSIZ - lstrm.avail_out; + return (0); +#endif + } 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; +#ifdef __APPLE__ + return (char *)(bufpos); +#else + return (bufpos); +#endif + } + + /* Look for a newline in the remaining part of the buffer */ + if ((p = memchr(bufpos, '\n', bufrem)) != NULL) { + ++p; /* advance over newline */ +#ifdef __APPLE__ + ret = (char *)bufpos; +#else + ret = bufpos; +#endif + 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, '\n', 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; +#ifdef __APPLE__ + return (char *)(lnbuf); +#else + return (lnbuf); +#endif + +error: + *lenp = 0; + 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) + goto error1; + + if (filebehave == FILE_MMAP) { + struct stat st; + + if ((fstat(f->fd, &st) == -1) || (st.st_size > OFF_MAX) || + (!S_ISREG(st.st_mode))) + filebehave = FILE_STDIO; + else { +#ifdef __APPLE__ + int flags = MAP_PRIVATE | MAP_NOCACHE; +#else + int flags = MAP_PRIVATE | MAP_NOCORE | MAP_NOSYNC; +#endif +#ifdef MAP_PREFAULT_READ + flags |= MAP_PREFAULT_READ; +#endif + fsiz = st.st_size; + buffer = mmap(NULL, fsiz, PROT_READ, flags, + f->fd, (off_t)0); + if (buffer == MAP_FAILED) + filebehave = FILE_STDIO; + else { + bufrem = st.st_size; + bufpos = buffer; + madvise(buffer, st.st_size, MADV_SEQUENTIAL); + } + } + } + + if ((buffer == NULL) || (buffer == MAP_FAILED)) + buffer = grep_malloc(MAXBUFSIZ); + + if (filebehave == FILE_GZIP && + (gzbufdesc = gzdopen(f->fd, "r")) == NULL) + goto error2; + +#ifndef WITHOUT_BZIP2 + if (filebehave == FILE_BZIP && + (bzbufdesc = BZ2_bzdopen(f->fd, "r")) == NULL) + goto error2; +#endif + + /* Fill read buffer, also catches errors early */ + if (bufrem == 0 && grep_refill(f) != 0) + goto error2; + + /* Check for binary stuff, if necessary */ + if (binbehave != BINFILE_TEXT && memchr(bufpos, '\0', bufrem) != NULL) + f->binary = true; + + return (f); + +error2: + close(f->fd); +error1: + free(f); + return (NULL); +} + +/* + * Closes a file. + */ +void +grep_close(struct file *f) +{ + + close(f->fd); + + /* Reset read buffer and line buffer */ + if (filebehave == FILE_MMAP) { + munmap(buffer, fsiz); + buffer = NULL; + } + bufpos = buffer; + bufrem = 0; + + free(lnbuf); + lnbuf = NULL; + lnbuflen = 0; +} diff --git a/text_cmds/grep/grep.1 b/text_cmds/grep/grep.1 new file mode 100644 index 0000000..a1d056e --- /dev/null +++ b/text_cmds/grep/grep.1 @@ -0,0 +1,500 @@ +.\" $NetBSD: grep.1,v 1.2 2011/02/16 01:31:33 joerg Exp $ +.\" $FreeBSD: src/usr.bin/grep/grep.1,v 1.5 2011/04/07 13:03:35 gabor Exp $ +.\" $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 July 28, 2010 +.Dt GREP 1 +.Os +.Sh NAME +.Nm grep , egrep , fgrep , +.Nm zgrep , zegrep , zfgrep +.Nd file pattern searcher +.Sh SYNOPSIS +.Nm grep +.Bk -words +.Op Fl abcdDEFGHhIiJLlmnOopqRSsUVvwxZ +.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 label +.Op Fl Fl line-buffered +.Op Fl Fl null +.Op Ar pattern +.Op Ar +.Ek +.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 Fl null +Prints a zero-byte after the file name. +.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 z , Fl Fl decompress +Force +.Nm grep +to behave as +.Nm zgrep . +.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. +.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 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 ENVIRONMENT +.Bl -tag -width "GREP_OPTIONS" +.It Ev GREP_OPTIONS +May be used to specify default options that will be placed at the beginning +of the argument list. +Backslash-escaping is not supported, unlike the behavior in GNU grep. +.El +.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 . +.Sh BUGS +The +.Nm +utility does not normalize Unicode input, so a pattern containing composed +characters will not match decomposed input, and vice versa. diff --git a/text_cmds/grep/grep.c b/text_cmds/grep/grep.c new file mode 100644 index 0000000..38f50ea --- /dev/null +++ b/text_cmds/grep/grep.c @@ -0,0 +1,783 @@ +/* $NetBSD: grep.c,v 1.4 2011/02/16 01:31:33 joerg Exp $ */ +/* $FreeBSD: src/usr.bin/grep/grep.c,v 1.16 2012/01/15 17:01:28 eadler Exp $ */ +/* $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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD: src/usr.bin/grep/grep.c,v 1.16 2012/01/15 17:01:28 eadler Exp $"); + +#include <sys/stat.h> +#include <sys/types.h> + +#include <ctype.h> +#include <err.h> +#include <errno.h> +#include <fcntl.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> + +#ifndef WITHOUT_FASTMATCH +#include "fastmatch.h" +#endif +#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", +#ifdef __APPLE__ +/* 4*/ "usage: %s [-abcDEFGHhIiJLlmnOoqRSsUVvwxZ] [-A num] [-B num] [-C[num]]\n", +#else +/* 4*/ "usage: %s [-abcDEFGHhIiJLlmnOoPqRSsUVvwxZ] [-A num] [-B num] [-C[num]]\n", +#endif +/* 5*/ "\t[-e pattern] [-f file] [--binary-files=value] [--color=when]\n", +/* 6*/ "\t[--context[=num]] [--directories=action] [--label] [--line-buffered]\n", +/* 7*/ "\t[--null] [pattern] [file ...]\n", +/* 8*/ "Binary file %s matches\n", +/* 9*/ "%s (BSD grep) %s\n", +}; + +/* Flags passed to regcomp() and regexec() */ +int cflags = REG_NOSUB; +int eflags = REG_STARTEND; + +/* Shortcut for matching all cases like empty regex */ +bool matchall; + +/* Searching patterns */ +unsigned int patterns, pattern_sz; +struct pat *pattern; +regex_t *r_pattern; +#ifndef WITHOUT_FASTMATCH +fastmatch_t *fg_pattern; +#endif + +/* 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 */ +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 */ +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, + HELP_OPT, + MMAP_OPT, + LINEBUF_OPT, + LABEL_OPT, + NULL_OPT, + R_EXCLUDE_OPT, + R_INCLUDE_OPT, + R_DEXCLUDE_OPT, + R_DINCLUDE_OPT +}; + +static inline const char *init_color(const char *); + +/* Housekeeping */ +bool first = true; /* flag whether we are processing the first match */ +bool prev; /* flag whether or not the previous line matched */ +int tail; /* lines left to print */ +bool file_err; /* file reading error */ + +/* + * Prints usage information and returns 2. + */ +static void +usage(void) +{ + fprintf(stderr, getstr(4), getprogname()); + 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:EFGHIJMLOPSRUVZabcd:e:f:hilm:nopqrsuvwxXy"; + +static const 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}, + {"label", required_argument, NULL, LABEL_OPT}, + {"null", no_argument, NULL, NULL_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'}, + {"lzma", no_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'}, + {"xz", no_argument, NULL, 'X'}, + {"decompress", 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) +{ + + /* Do not add further pattern is we already match everything */ + if (matchall) + return; + + /* Check if we can do a shortcut */ + if (len == 0) { + matchall = true; +#ifndef WITHOUT_FASTMATCH + for (unsigned int i = 0; i < patterns; i++) { + free(pattern[i].pat); + } + pattern = grep_realloc(pattern, sizeof(struct pat)); + pattern[0].pat = NULL; + pattern[0].len = 0; + patterns = 1; +#endif + return; + } + /* Increase size if necessary */ + if (patterns == pattern_sz) { + pattern_sz *= 2; + pattern = grep_realloc(pattern, ++pattern_sz * + sizeof(struct pat)); + } + if (len > 0 && pat[len - 1] == '\n') + --len; + /* pat may not be NUL-terminated */ + pattern[patterns].pat = grep_malloc(len + 1); + memcpy(pattern[patterns].pat, pat, len); + pattern[patterns].len = len; + pattern[patterns].pat[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; +} + +/* + * Adds search patterns from arguments. + */ +static void +add_arg_patterns(const char *arg) +{ + char *argcopy, *pattern; + + argcopy = grep_strdup(arg); + while ((pattern = strsep(&argcopy, "\n")) != NULL) { + add_pattern(pattern, strlen(pattern)); + } + free(argcopy); +} + +/* + * Reads searching patterns from a file and adds them with add_pattern(). + */ +static void +read_patterns(const char *fn) +{ + struct stat st; + FILE *f; + char *line; + size_t len; + + if ((f = fopen(fn, "r")) == NULL) + err(2, "%s", fn); + if ((fstat(fileno(f), &st) == -1) || (S_ISDIR(st.st_mode))) { + fclose(f); + return; + } + while ((line = fgetln(f, &len)) != NULL) + add_pattern(line, line[0] == '\n' ? 0 : len); + 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[0] != '\0' ? c : d); +} + +int +main(int argc, char *argv[]) +{ + char **aargv, **eargv, *eopts; + char *ep; + const char *pn; + unsigned long long l; + unsigned int aargc, eargc, i; + 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. */ + pn = getprogname(); + if (pn[0] == 'b' && pn[1] == 'z') { + filebehave = FILE_BZIP; + pn += 2; + } else if (pn[0] == 'x' && pn[1] == 'z') { + filebehave = FILE_XZ; + pn += 2; + } else if (pn[0] == 'l' && pn[1] == 'z') { + filebehave = FILE_LZMA; + pn += 2; + } else if (pn[0] == 'z') { + filebehave = FILE_GZIP; + pn += 1; + } + switch (pn[0]) { + case 'e': + grepbehave = GREP_EXTENDED; + break; + case 'f': + grepbehave = GREP_FIXED; + 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 && eopts[0] != '\0') { + char *str; + + /* make an estimation of how many extra arguments we have */ + for (unsigned int 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) + if (str[0] != '\0') + 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 (int j = 1; j < 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_arg_patterns(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': +#ifdef WITHOUT_BZIP2 + errno = EOPNOTSUPP; + err(2, "bzip2 support was disabled at compile-time"); +#endif + 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 = strtoll(optarg, &ep, 10); + if (((errno == ERANGE) && (mcount == LLONG_MAX)) || + ((errno == EINVAL) && (mcount == 0))) + err(2, NULL); + else if (ep[0] != '\0') { + errno = EINVAL; + err(2, NULL); + } + break; + case 'M': +#ifdef WITHOUT_LZMA + errno = EOPNOTSUPP; + err(2, "lzma support was disabled at compile-time"); +#endif + filebehave = FILE_LZMA; + break; + case 'n': + nflag = true; + break; + case 'O': + linkbehave = LINK_EXPLICIT; + break; + case 'o': + oflag = true; + cflags &= ~REG_NOSUB; + 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: +#ifndef __APPLE__ + /* mmap mode is buggy (10789286) */ + filebehave = FILE_MMAP; +#endif + break; + case 'V': + printf(getstr(9), getprogname(), VERSION); + exit(0); + case 'v': + vflag = true; + break; + case 'w': + wflag = true; + cflags &= ~REG_NOSUB; + break; + case 'x': + xflag = true; + cflags &= ~REG_NOSUB; + break; + case 'X': +#ifdef WITHOUT_LZMA + errno = EOPNOTSUPP; + err(2, "xz support was disabled at compile-time"); +#endif + filebehave = FILE_XZ; + break; + case 'Z': + filebehave = FILE_GZIP; + 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"); + cflags &= ~REG_NOSUB; + break; + case LABEL_OPT: + label = optarg; + break; + case LINEBUF_OPT: + lbflag = true; + break; + case NULL_OPT: + nullflag = 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; + + /* Empty pattern file matches nothing */ +#ifndef WITHOUT_FASTMATCH + if (!needpattern && (patterns == 0)) +#else + if (!needpattern && (patterns == 0) && !matchall) +#endif + exit(1); + + /* Fail if we don't have any pattern */ + if (aargc == 0 && needpattern) + usage(); + + /* Process patterns from command line */ + if (aargc != 0 && needpattern) { + add_arg_patterns(*aargv); + --aargc; + ++aargv; + } + + switch (grepbehave) { + case GREP_BASIC: +#ifdef __APPLE__ + cflags |= REG_ENHANCED; +#endif + break; + case GREP_FIXED: + /* XXX: header mess, REG_LITERAL not defined in gnu/regex.h */ + cflags |= 0020; + break; + case GREP_EXTENDED: + cflags |= REG_EXTENDED; +#ifdef __APPLE__ + cflags |= REG_ENHANCED; +#endif + break; + default: + /* NOTREACHED */ + usage(); + } + +#ifndef WITHOUT_FASTMATCH + fg_pattern = grep_calloc(patterns, sizeof(*fg_pattern)); +#endif + r_pattern = grep_calloc(patterns, sizeof(*r_pattern)); + + /* Check if cheating is allowed (always is for fgrep). */ + for (i = 0; i < patterns; ++i) { +#ifndef WITHOUT_FASTMATCH + if (fastncomp(&fg_pattern[i], pattern[i].pat, + pattern[i].len, cflags) != 0) { +#endif + /* Fall back to full regex library */ + c = regcomp(&r_pattern[i], pattern[i].pat, cflags); + if (c != 0) { + regerror(c, &r_pattern[i], re_error, + RE_ERROR_BUF); + errx(2, "%s", re_error); + } +#ifndef WITHOUT_FASTMATCH + } +#endif + } + + 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 ? (file_err ? (qflag ? 0 : 2) : 0) : (file_err ? 2 : 1)); +} diff --git a/text_cmds/grep/grep.h b/text_cmds/grep/grep.h new file mode 100644 index 0000000..c46e172 --- /dev/null +++ b/text_cmds/grep/grep.h @@ -0,0 +1,161 @@ +/* $NetBSD: grep.h,v 1.5 2011/02/27 17:33:37 joerg Exp $ */ +/* $OpenBSD: grep.h,v 1.15 2010/04/05 03:03:55 tedu Exp $ */ +/* $FreeBSD: src/usr.bin/grep/grep.h,v 1.10 2011/12/07 12:25:28 gabor 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. + */ + +#include <bzlib.h> +#include <limits.h> +#include <regex.h> +#include <stdbool.h> +#include <stdio.h> +#include <zlib.h> + +#ifndef WITHOUT_FASTMATCH +#include "fastmatch.h" +#endif + +#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_MMAP 1 +#define FILE_GZIP 2 +#define FILE_BZIP 3 +#define FILE_XZ 4 +#define FILE_LZMA 5 + +#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 + +#ifdef __APPLE__ +#define MIN_LINE_MATCHES 32 +#define MAX_LINE_MATCHES 1073741824 +#else +#define MAX_LINE_MATCHES 32 +#endif + +struct file { + int fd; + bool binary; +}; + +struct str { + off_t off; + size_t len; + char *dat; + char *file; + int line_no; +}; + +struct pat { + char *pat; + int len; +}; + +struct epat { + char *pat; + int mode; +}; + +/* 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; +extern unsigned long long Aflag, Bflag; +extern long long mcount; +extern char *label; +extern const char *color; +extern int binbehave, devbehave, dirbehave, filebehave, grepbehave, linkbehave; + +extern bool file_err, first, matchall, prev; +extern int tail; +extern unsigned int dpatterns, fpatterns, patterns; +extern struct pat *pattern; +extern struct epat *dpattern, *fpattern; +extern regex_t *er_pattern, *r_pattern; +#ifndef WITHOUT_FASTMATCH +extern fastmatch_t *fg_pattern; +#endif + +/* 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); diff --git a/text_cmds/grep/queue.c b/text_cmds/grep/queue.c new file mode 100644 index 0000000..474b4c5 --- /dev/null +++ b/text_cmds/grep/queue.c @@ -0,0 +1,107 @@ +/* $NetBSD: queue.c,v 1.2 2011/02/16 01:31:33 joerg Exp $ */ +/* $FreeBSD: src/usr.bin/grep/queue.c,v 1.5 2011/04/07 13:03:35 gabor 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. + */ + +/* + * 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD: src/usr.bin/grep/queue.c,v 1.5 2011/04/07 13:03:35 gabor 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) + free(dequeue()); +} + +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, '-', (regmatch_t *)NULL, 0); + free(item); + } +} + +void +clearqueue(void) +{ + struct qentry *item; + + while ((item = dequeue()) != NULL) + free(item); +} diff --git a/text_cmds/grep/util.c b/text_cmds/grep/util.c new file mode 100644 index 0000000..fa42d55 --- /dev/null +++ b/text_cmds/grep/util.c @@ -0,0 +1,599 @@ +/* $NetBSD: util.c,v 1.9 2011/02/27 17:33:37 joerg Exp $ */ +/* $FreeBSD: src/usr.bin/grep/util.c,v 1.19 2011/12/07 12:25:28 gabor Exp $ */ +/* $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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD: src/usr.bin/grep/util.c,v 1.19 2011/12/07 12:25:28 gabor Exp $"); + +#include <sys/stat.h> +#include <sys/types.h> +#ifdef __APPLE__ +#include <sys/param.h> +#endif + +#include <ctype.h> +#include <err.h> +#include <errno.h> +#include <fnmatch.h> +#include <fts.h> +#include <libgen.h> +#ifdef __APPLE__ +#include <locale.h> +#endif /* __APPLE__ */ +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <wchar.h> +#include <wctype.h> + +#ifndef WITHOUT_FASTMATCH +#include "fastmatch.h" +#endif +#include "grep.h" + +static int linesqueued; +static int procline(struct str *l, int); + +bool +file_matching(const char *fname) +{ + char *fname_base; + bool ret; + + ret = finclude ? false : true; +#ifdef __APPLE__ + fname_base = basename((char *)fname); +#else + fname_base = basename(fname); +#endif + + for (unsigned int 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) + return (false); + else + ret = true; + } + } + return (ret); +} + +static inline bool +dir_matching(const char *dname) +{ + bool ret; + + ret = dinclude ? false : true; + + for (unsigned int i = 0; i < dpatterns; ++i) { + if (dname != NULL && + fnmatch(dpattern[i].pat, dname, 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; + 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: + file_err = true; + if(!sflag) + warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); + break; + case FTS_D: + /* FALLTHROUGH */ + case FTS_DP: + if (dexclude || dinclude) + if (!dir_matching(p->fts_name) || + !dir_matching(p->fts_path)) + fts_set(fts, p, FTS_SKIP); + 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 (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) { +#ifdef __APPLE__ + /* 4053512, 10290183 */ + if (dirbehave == DIR_RECURSE && isatty(STDIN_FILENO)) { + warnx("warning: recursive search of stdin"); + } +#endif + 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) { + file_err = true; + if (!sflag) + warn("%s", fn); + return (0); + } + + ln.file = grep_malloc(strlen(fn) + 1); + strcpy(ln.file, fn); + ln.line_no = 0; + ln.len = 0; + linesqueued = 0; + tail = 0; + ln.off = -1; + + for (c = 0; c == 0 || !(lflag || qflag); ) { + ln.off += ln.len + 1; + if ((ln.dat = grep_fgetln(f, &ln.len)) == NULL || ln.len == 0) { + if (ln.line_no == 0 && matchall) + exit(0); + else + break; + } + if (ln.len > 0 && ln.dat[ln.len - 1] == '\n') + --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 */ + if ((t = procline(&ln, f->binary)) == 0 && Bflag > 0) { + enqueue(&ln); + linesqueued++; + } + c += t; + if (mflag && mcount <= 0) + break; + } + if (Bflag > 0) + clearqueue(); + grep_close(f); + +#ifdef __APPLE__ + /* 10680370 */ + if (cflag && !qflag) { +#else + if (cflag) { +#endif + if (!hflag) + printf("%s:", ln.file); + printf("%u\n", c); + } + if (lflag && !qflag && c != 0) + printf("%s%c", fn, nullflag ? 0 : '\n'); + if (Lflag && !qflag && c == 0) + printf("%s%c", fn, nullflag ? 0 : '\n'); + if (c && !cflag && !lflag && !Lflag && + binbehave == BINFILE_BIN && f->binary && !qflag) + printf(getstr(8), fn); + + free(ln.file); + free(f); + return (c); +} + +#ifdef __APPLE__ +static int +mbtowc_reverse(wchar_t *pwc, const char *s, size_t n) +{ + int result; + size_t i; + + result = -1; + for (i = 1; i <= n; i++) { + result = mbtowc(pwc, s - i, i); + if (result != -1) { + break; + } + } + + return result; +} +#endif + +#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) +{ +#ifdef __APPLE__ + int nmatches; + regmatch_t *matches; +#else + regmatch_t matches[MAX_LINE_MATCHES]; +#endif + regmatch_t pmatch; + size_t st = 0; + unsigned int i; + int c = 0, m = 0, r = 0; + +#ifdef __APPLE__ + nmatches = MIN_LINE_MATCHES; + matches = grep_malloc(nmatches * sizeof(regmatch_t)); +#endif + + /* Loop to process the whole line */ + do { +#ifdef WITHOUT_FASTMATCH + if (matchall) { + c = !vflag; + break; + } +#endif + + pmatch.rm_so = st; + pmatch.rm_eo = l->len; + + /* Loop to compare with all the patterns */ + for (i = 0; i < patterns; i++) { +#ifdef __APPLE__ + /* 10462853: Treat binary files as binary. */ + if (nottext) { + setlocale(LC_ALL, "C"); + } +#endif /* __APPLE__ */ +#ifndef WITHOUT_FASTMATCH + if (fg_pattern[i].pattern) + r = fastexec(&fg_pattern[i], + l->dat, 1, &pmatch, eflags); + else +#endif + r = regexec(&r_pattern[i], l->dat, 1, + &pmatch, eflags); +#ifdef __APPLE__ + if (nottext) { + setlocale(LC_ALL, ""); + } +#endif /* __APPLE__ */ + r = (r == 0) ? 0 : REG_NOMATCH; + st = (cflags & REG_NOSUB) + ? (size_t)l->len + : (size_t)pmatch.rm_eo; + if (r == REG_NOMATCH) + continue; + /* Check for full match */ + if (r == 0 && xflag) + if (pmatch.rm_so != 0 || + (size_t)pmatch.rm_eo != l->len) + r = REG_NOMATCH; + /* Check for whole word match */ +#ifndef WITHOUT_FASTMATCH + if (r == 0 && (wflag || fg_pattern[i].word)) { +#else + if (r == 0 && (wflag)) { +#endif + wchar_t wbegin, wend; + + wbegin = wend = L' '; + if (pmatch.rm_so != 0 && +#ifdef __APPLE__ + mbtowc_reverse(&wbegin, &l->dat[pmatch.rm_so], MAX(MB_CUR_MAX, pmatch.rm_so)) == -1) +#else + sscanf(&l->dat[pmatch.rm_so - 1], + "%lc", &wbegin) != 1) +#endif + r = REG_NOMATCH; + else if ((size_t)pmatch.rm_eo != + l->len && +#ifdef __APPLE__ + mbtowc(&wend, &l->dat[pmatch.rm_eo], MAX(MB_CUR_MAX, l->len - (size_t)pmatch.rm_eo)) == -1) +#else + sscanf(&l->dat[pmatch.rm_eo], + "%lc", &wend) != 1) +#endif + r = REG_NOMATCH; + else if (iswword(wbegin) || + iswword(wend)) + r = REG_NOMATCH; + } + if (r == 0) { + if (m == 0) + c++; +#ifdef __APPLE__ + if (m < MAX_LINE_MATCHES) { + if (m >= nmatches) { + nmatches += MIN_LINE_MATCHES; + matches = grep_realloc(matches, nmatches * sizeof(regmatch_t)); + } + matches[m++] = pmatch; + } +#else + if (m < MAX_LINE_MATCHES) + matches[m++] = pmatch; +#endif + /* matches - skip further patterns */ + if ((color == NULL && !oflag) || + qflag || lflag) + break; + } + } + + if (vflag) { + c = !c; + break; + } + + /* One pass if we are not recording matches */ +#ifdef __APPLE__ + /* 10593340: If -w didn't match, keep going. */ + if (!(wflag && r == REG_NOMATCH) && ((color == NULL && !oflag) || qflag || lflag)) +#else + if ((color == NULL && !oflag) || qflag || lflag) +#endif + break; + + if (st == (size_t)pmatch.rm_so) + break; /* No matches */ + } while (st < l->len); + + + /* Count the matches if we have a match limit */ + if (mflag) + mcount -= c; + + if (c && binbehave == BINFILE_BIN && nottext) { +#ifdef __APPLE__ + free(matches); +#endif + return (c); /* Binary file */ + } + + /* Dealing with the context */ + if ((tail || c) && !cflag && !qflag && !lflag && !Lflag) { + if (c) { + if (!first && !prev && !tail && Aflag) + printf("--\n"); + tail = Aflag; + if (Bflag > 0) { + if (!first && !prev) + printf("--\n"); + printqueue(); + } + linesqueued = 0; + printline(l, ':', matches, m); + } else { + printline(l, '-', matches, m); + tail--; + } + } + + if (c) { + prev = true; + first = false; + } else + prev = false; + +#ifdef __APPLE__ + free(matches); +#endif + 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) { + fputs(line->file, stdout); + ++n; + } else { + printf("%s", line->file); + putchar(0); + } + } + 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('\n'); + } + } else { + fwrite(line->dat, line->len, 1, stdout); + putchar('\n'); + } +} |