3181 lines
90 KiB
C
3181 lines
90 KiB
C
/*************************************************
|
|
* pcregrep program *
|
|
*************************************************/
|
|
|
|
/* This is a grep program that uses the PCRE regular expression library to do
|
|
its pattern matching. On a Unix or Win32 system it can recurse into
|
|
directories.
|
|
|
|
Copyright (c) 1997-2012 University of Cambridge
|
|
|
|
-----------------------------------------------------------------------------
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
|
|
* 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.
|
|
|
|
* Neither the name of the University of Cambridge 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
|
|
-----------------------------------------------------------------------------
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <ctype.h>
|
|
#include <locale.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#ifdef SUPPORT_LIBZ
|
|
#include <zlib.h>
|
|
#endif
|
|
|
|
#ifdef SUPPORT_LIBBZ2
|
|
#include <bzlib.h>
|
|
#endif
|
|
|
|
#include "pcre.h"
|
|
|
|
#define FALSE 0
|
|
#define TRUE 1
|
|
|
|
typedef int BOOL;
|
|
|
|
#define OFFSET_SIZE 99
|
|
|
|
#if BUFSIZ > 8192
|
|
#define MAXPATLEN BUFSIZ
|
|
#else
|
|
#define MAXPATLEN 8192
|
|
#endif
|
|
|
|
#define PATBUFSIZE (MAXPATLEN + 10) /* Allows for prefix+suffix */
|
|
|
|
/* Values for the "filenames" variable, which specifies options for file name
|
|
output. The order is important; it is assumed that a file name is wanted for
|
|
all values greater than FN_DEFAULT. */
|
|
|
|
enum { FN_NONE, FN_DEFAULT, FN_MATCH_ONLY, FN_NOMATCH_ONLY, FN_FORCE };
|
|
|
|
/* File reading styles */
|
|
|
|
enum { FR_PLAIN, FR_LIBZ, FR_LIBBZ2 };
|
|
|
|
/* Actions for the -d and -D options */
|
|
|
|
enum { dee_READ, dee_SKIP, dee_RECURSE };
|
|
enum { DEE_READ, DEE_SKIP };
|
|
|
|
/* Actions for special processing options (flag bits) */
|
|
|
|
#define PO_WORD_MATCH 0x0001
|
|
#define PO_LINE_MATCH 0x0002
|
|
#define PO_FIXED_STRINGS 0x0004
|
|
|
|
/* Line ending types */
|
|
|
|
enum { EL_LF, EL_CR, EL_CRLF, EL_ANY, EL_ANYCRLF };
|
|
|
|
/* Binary file options */
|
|
|
|
enum { BIN_BINARY, BIN_NOMATCH, BIN_TEXT };
|
|
|
|
/* In newer versions of gcc, with FORTIFY_SOURCE set (the default in some
|
|
environments), a warning is issued if the value of fwrite() is ignored.
|
|
Unfortunately, casting to (void) does not suppress the warning. To get round
|
|
this, we use a macro that compiles a fudge. Oddly, this does not also seem to
|
|
apply to fprintf(). */
|
|
|
|
#define FWRITE(a,b,c,d) if (fwrite(a,b,c,d)) {}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Global variables *
|
|
*************************************************/
|
|
|
|
/* Jeffrey Friedl has some debugging requirements that are not part of the
|
|
regular code. */
|
|
|
|
#ifdef JFRIEDL_DEBUG
|
|
static int S_arg = -1;
|
|
static unsigned int jfriedl_XR = 0; /* repeat regex attempt this many times */
|
|
static unsigned int jfriedl_XT = 0; /* replicate text this many times */
|
|
static const char *jfriedl_prefix = "";
|
|
static const char *jfriedl_postfix = "";
|
|
#endif
|
|
|
|
static int endlinetype;
|
|
|
|
static char *colour_string = (char *)"1;31";
|
|
static char *colour_option = NULL;
|
|
static char *dee_option = NULL;
|
|
static char *DEE_option = NULL;
|
|
static char *locale = NULL;
|
|
static char *main_buffer = NULL;
|
|
static char *newline = NULL;
|
|
static char *om_separator = (char *)"";
|
|
static char *stdin_name = (char *)"(standard input)";
|
|
|
|
static const unsigned char *pcretables = NULL;
|
|
|
|
static int after_context = 0;
|
|
static int before_context = 0;
|
|
static int binary_files = BIN_BINARY;
|
|
static int both_context = 0;
|
|
static int bufthird = PCREGREP_BUFSIZE;
|
|
static int bufsize = 3*PCREGREP_BUFSIZE;
|
|
|
|
#if defined HAVE_WINDOWS_H && HAVE_WINDOWS_H
|
|
static int dee_action = dee_SKIP;
|
|
#else
|
|
static int dee_action = dee_READ;
|
|
#endif
|
|
|
|
static int DEE_action = DEE_READ;
|
|
static int error_count = 0;
|
|
static int filenames = FN_DEFAULT;
|
|
static int pcre_options = 0;
|
|
static int process_options = 0;
|
|
|
|
#ifdef SUPPORT_PCREGREP_JIT
|
|
static int study_options = PCRE_STUDY_JIT_COMPILE;
|
|
#else
|
|
static int study_options = 0;
|
|
#endif
|
|
|
|
static unsigned long int match_limit = 0;
|
|
static unsigned long int match_limit_recursion = 0;
|
|
|
|
static BOOL count_only = FALSE;
|
|
static BOOL do_colour = FALSE;
|
|
static BOOL file_offsets = FALSE;
|
|
static BOOL hyphenpending = FALSE;
|
|
static BOOL invert = FALSE;
|
|
static BOOL line_buffered = FALSE;
|
|
static BOOL line_offsets = FALSE;
|
|
static BOOL multiline = FALSE;
|
|
static BOOL number = FALSE;
|
|
static BOOL omit_zero_count = FALSE;
|
|
static BOOL resource_error = FALSE;
|
|
static BOOL quiet = FALSE;
|
|
static BOOL show_only_matching = FALSE;
|
|
static BOOL silent = FALSE;
|
|
static BOOL utf8 = FALSE;
|
|
|
|
/* Structure for list of --only-matching capturing numbers. */
|
|
|
|
typedef struct omstr {
|
|
struct omstr *next;
|
|
int groupnum;
|
|
} omstr;
|
|
|
|
static omstr *only_matching = NULL;
|
|
static omstr *only_matching_last = NULL;
|
|
|
|
/* Structure for holding the two variables that describe a number chain. */
|
|
|
|
typedef struct omdatastr {
|
|
omstr **anchor;
|
|
omstr **lastptr;
|
|
} omdatastr;
|
|
|
|
static omdatastr only_matching_data = { &only_matching, &only_matching_last };
|
|
|
|
/* Structure for list of file names (for -f and --{in,ex}clude-from) */
|
|
|
|
typedef struct fnstr {
|
|
struct fnstr *next;
|
|
char *name;
|
|
} fnstr;
|
|
|
|
static fnstr *exclude_from = NULL;
|
|
static fnstr *exclude_from_last = NULL;
|
|
static fnstr *include_from = NULL;
|
|
static fnstr *include_from_last = NULL;
|
|
|
|
static fnstr *file_lists = NULL;
|
|
static fnstr *file_lists_last = NULL;
|
|
static fnstr *pattern_files = NULL;
|
|
static fnstr *pattern_files_last = NULL;
|
|
|
|
/* Structure for holding the two variables that describe a file name chain. */
|
|
|
|
typedef struct fndatastr {
|
|
fnstr **anchor;
|
|
fnstr **lastptr;
|
|
} fndatastr;
|
|
|
|
static fndatastr exclude_from_data = { &exclude_from, &exclude_from_last };
|
|
static fndatastr include_from_data = { &include_from, &include_from_last };
|
|
static fndatastr file_lists_data = { &file_lists, &file_lists_last };
|
|
static fndatastr pattern_files_data = { &pattern_files, &pattern_files_last };
|
|
|
|
/* Structure for pattern and its compiled form; used for matching patterns and
|
|
also for include/exclude patterns. */
|
|
|
|
typedef struct patstr {
|
|
struct patstr *next;
|
|
char *string;
|
|
pcre *compiled;
|
|
pcre_extra *hint;
|
|
} patstr;
|
|
|
|
static patstr *patterns = NULL;
|
|
static patstr *patterns_last = NULL;
|
|
static patstr *include_patterns = NULL;
|
|
static patstr *include_patterns_last = NULL;
|
|
static patstr *exclude_patterns = NULL;
|
|
static patstr *exclude_patterns_last = NULL;
|
|
static patstr *include_dir_patterns = NULL;
|
|
static patstr *include_dir_patterns_last = NULL;
|
|
static patstr *exclude_dir_patterns = NULL;
|
|
static patstr *exclude_dir_patterns_last = NULL;
|
|
|
|
/* Structure holding the two variables that describe a pattern chain. A pointer
|
|
to such structures is used for each appropriate option. */
|
|
|
|
typedef struct patdatastr {
|
|
patstr **anchor;
|
|
patstr **lastptr;
|
|
} patdatastr;
|
|
|
|
static patdatastr match_patdata = { &patterns, &patterns_last };
|
|
static patdatastr include_patdata = { &include_patterns, &include_patterns_last };
|
|
static patdatastr exclude_patdata = { &exclude_patterns, &exclude_patterns_last };
|
|
static patdatastr include_dir_patdata = { &include_dir_patterns, &include_dir_patterns_last };
|
|
static patdatastr exclude_dir_patdata = { &exclude_dir_patterns, &exclude_dir_patterns_last };
|
|
|
|
static patstr **incexlist[4] = { &include_patterns, &exclude_patterns,
|
|
&include_dir_patterns, &exclude_dir_patterns };
|
|
|
|
static const char *incexname[4] = { "--include", "--exclude",
|
|
"--include-dir", "--exclude-dir" };
|
|
|
|
/* Structure for options and list of them */
|
|
|
|
enum { OP_NODATA, OP_STRING, OP_OP_STRING, OP_NUMBER, OP_LONGNUMBER,
|
|
OP_OP_NUMBER, OP_OP_NUMBERS, OP_PATLIST, OP_FILELIST, OP_BINFILES };
|
|
|
|
typedef struct option_item {
|
|
int type;
|
|
int one_char;
|
|
void *dataptr;
|
|
const char *long_name;
|
|
const char *help_text;
|
|
} option_item;
|
|
|
|
/* Options without a single-letter equivalent get a negative value. This can be
|
|
used to identify them. */
|
|
|
|
#define N_COLOUR (-1)
|
|
#define N_EXCLUDE (-2)
|
|
#define N_EXCLUDE_DIR (-3)
|
|
#define N_HELP (-4)
|
|
#define N_INCLUDE (-5)
|
|
#define N_INCLUDE_DIR (-6)
|
|
#define N_LABEL (-7)
|
|
#define N_LOCALE (-8)
|
|
#define N_NULL (-9)
|
|
#define N_LOFFSETS (-10)
|
|
#define N_FOFFSETS (-11)
|
|
#define N_LBUFFER (-12)
|
|
#define N_M_LIMIT (-13)
|
|
#define N_M_LIMIT_REC (-14)
|
|
#define N_BUFSIZE (-15)
|
|
#define N_NOJIT (-16)
|
|
#define N_FILE_LIST (-17)
|
|
#define N_BINARY_FILES (-18)
|
|
#define N_EXCLUDE_FROM (-19)
|
|
#define N_INCLUDE_FROM (-20)
|
|
#define N_OM_SEPARATOR (-21)
|
|
|
|
static option_item optionlist[] = {
|
|
{ OP_NODATA, N_NULL, NULL, "", "terminate options" },
|
|
{ OP_NODATA, N_HELP, NULL, "help", "display this help and exit" },
|
|
{ OP_NUMBER, 'A', &after_context, "after-context=number", "set number of following context lines" },
|
|
{ OP_NODATA, 'a', NULL, "text", "treat binary files as text" },
|
|
{ OP_NUMBER, 'B', &before_context, "before-context=number", "set number of prior context lines" },
|
|
{ OP_BINFILES, N_BINARY_FILES, NULL, "binary-files=word", "set treatment of binary files" },
|
|
{ OP_NUMBER, N_BUFSIZE,&bufthird, "buffer-size=number", "set processing buffer size parameter" },
|
|
{ OP_OP_STRING, N_COLOUR, &colour_option, "color=option", "matched text color option" },
|
|
{ OP_OP_STRING, N_COLOUR, &colour_option, "colour=option", "matched text colour option" },
|
|
{ OP_NUMBER, 'C', &both_context, "context=number", "set number of context lines, before & after" },
|
|
{ OP_NODATA, 'c', NULL, "count", "print only a count of matching lines per FILE" },
|
|
{ OP_STRING, 'D', &DEE_option, "devices=action","how to handle devices, FIFOs, and sockets" },
|
|
{ OP_STRING, 'd', &dee_option, "directories=action", "how to handle directories" },
|
|
{ OP_PATLIST, 'e', &match_patdata, "regex(p)=pattern", "specify pattern (may be used more than once)" },
|
|
{ OP_NODATA, 'F', NULL, "fixed-strings", "patterns are sets of newline-separated strings" },
|
|
{ OP_FILELIST, 'f', &pattern_files_data, "file=path", "read patterns from file" },
|
|
{ OP_FILELIST, N_FILE_LIST, &file_lists_data, "file-list=path","read files to search from file" },
|
|
{ OP_NODATA, N_FOFFSETS, NULL, "file-offsets", "output file offsets, not text" },
|
|
{ OP_NODATA, 'H', NULL, "with-filename", "force the prefixing filename on output" },
|
|
{ OP_NODATA, 'h', NULL, "no-filename", "suppress the prefixing filename on output" },
|
|
{ OP_NODATA, 'I', NULL, "", "treat binary files as not matching (ignore)" },
|
|
{ OP_NODATA, 'i', NULL, "ignore-case", "ignore case distinctions" },
|
|
#ifdef SUPPORT_PCREGREP_JIT
|
|
{ OP_NODATA, N_NOJIT, NULL, "no-jit", "do not use just-in-time compiler optimization" },
|
|
#else
|
|
{ OP_NODATA, N_NOJIT, NULL, "no-jit", "ignored: this pcregrep does not support JIT" },
|
|
#endif
|
|
{ OP_NODATA, 'l', NULL, "files-with-matches", "print only FILE names containing matches" },
|
|
{ OP_NODATA, 'L', NULL, "files-without-match","print only FILE names not containing matches" },
|
|
{ OP_STRING, N_LABEL, &stdin_name, "label=name", "set name for standard input" },
|
|
{ OP_NODATA, N_LBUFFER, NULL, "line-buffered", "use line buffering" },
|
|
{ OP_NODATA, N_LOFFSETS, NULL, "line-offsets", "output line numbers and offsets, not text" },
|
|
{ OP_STRING, N_LOCALE, &locale, "locale=locale", "use the named locale" },
|
|
{ OP_LONGNUMBER, N_M_LIMIT, &match_limit, "match-limit=number", "set PCRE match limit option" },
|
|
{ OP_LONGNUMBER, N_M_LIMIT_REC, &match_limit_recursion, "recursion-limit=number", "set PCRE match recursion limit option" },
|
|
{ OP_NODATA, 'M', NULL, "multiline", "run in multiline mode" },
|
|
{ OP_STRING, 'N', &newline, "newline=type", "set newline type (CR, LF, CRLF, ANYCRLF or ANY)" },
|
|
{ OP_NODATA, 'n', NULL, "line-number", "print line number with output lines" },
|
|
{ OP_OP_NUMBERS, 'o', &only_matching_data, "only-matching=n", "show only the part of the line that matched" },
|
|
{ OP_STRING, N_OM_SEPARATOR, &om_separator, "om-separator=text", "set separator for multiple -o output" },
|
|
{ OP_NODATA, 'q', NULL, "quiet", "suppress output, just set return code" },
|
|
{ OP_NODATA, 'r', NULL, "recursive", "recursively scan sub-directories" },
|
|
{ OP_PATLIST, N_EXCLUDE,&exclude_patdata, "exclude=pattern","exclude matching files when recursing" },
|
|
{ OP_PATLIST, N_INCLUDE,&include_patdata, "include=pattern","include matching files when recursing" },
|
|
{ OP_PATLIST, N_EXCLUDE_DIR,&exclude_dir_patdata, "exclude-dir=pattern","exclude matching directories when recursing" },
|
|
{ OP_PATLIST, N_INCLUDE_DIR,&include_dir_patdata, "include-dir=pattern","include matching directories when recursing" },
|
|
{ OP_FILELIST, N_EXCLUDE_FROM,&exclude_from_data, "exclude-from=path", "read exclude list from file" },
|
|
{ OP_FILELIST, N_INCLUDE_FROM,&include_from_data, "include-from=path", "read include list from file" },
|
|
|
|
/* These two were accidentally implemented with underscores instead of
|
|
hyphens in the option names. As this was not discovered for several releases,
|
|
the incorrect versions are left in the table for compatibility. However, the
|
|
--help function misses out any option that has an underscore in its name. */
|
|
|
|
{ OP_PATLIST, N_EXCLUDE_DIR,&exclude_dir_patdata, "exclude_dir=pattern","exclude matching directories when recursing" },
|
|
{ OP_PATLIST, N_INCLUDE_DIR,&include_dir_patdata, "include_dir=pattern","include matching directories when recursing" },
|
|
|
|
#ifdef JFRIEDL_DEBUG
|
|
{ OP_OP_NUMBER, 'S', &S_arg, "jeffS", "replace matched (sub)string with X" },
|
|
#endif
|
|
{ OP_NODATA, 's', NULL, "no-messages", "suppress error messages" },
|
|
{ OP_NODATA, 'u', NULL, "utf-8", "use UTF-8 mode" },
|
|
{ OP_NODATA, 'V', NULL, "version", "print version information and exit" },
|
|
{ OP_NODATA, 'v', NULL, "invert-match", "select non-matching lines" },
|
|
{ OP_NODATA, 'w', NULL, "word-regex(p)", "force patterns to match only as words" },
|
|
{ OP_NODATA, 'x', NULL, "line-regex(p)", "force patterns to match only whole lines" },
|
|
{ OP_NODATA, 0, NULL, NULL, NULL }
|
|
};
|
|
|
|
/* Tables for prefixing and suffixing patterns, according to the -w, -x, and -F
|
|
options. These set the 1, 2, and 4 bits in process_options, respectively. Note
|
|
that the combination of -w and -x has the same effect as -x on its own, so we
|
|
can treat them as the same. Note that the MAXPATLEN macro assumes the longest
|
|
prefix+suffix is 10 characters; if anything longer is added, it must be
|
|
adjusted. */
|
|
|
|
static const char *prefix[] = {
|
|
"", "\\b", "^(?:", "^(?:", "\\Q", "\\b\\Q", "^(?:\\Q", "^(?:\\Q" };
|
|
|
|
static const char *suffix[] = {
|
|
"", "\\b", ")$", ")$", "\\E", "\\E\\b", "\\E)$", "\\E)$" };
|
|
|
|
/* UTF-8 tables - used only when the newline setting is "any". */
|
|
|
|
const int utf8_table3[] = { 0xff, 0x1f, 0x0f, 0x07, 0x03, 0x01};
|
|
|
|
const char utf8_table4[] = {
|
|
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
|
|
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
|
|
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
|
|
3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5 };
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Exit from the program *
|
|
*************************************************/
|
|
|
|
/* If there has been a resource error, give a suitable message.
|
|
|
|
Argument: the return code
|
|
Returns: does not return
|
|
*/
|
|
|
|
static void
|
|
pcregrep_exit(int rc)
|
|
{
|
|
if (resource_error)
|
|
{
|
|
fprintf(stderr, "pcregrep: Error %d, %d or %d means that a resource limit "
|
|
"was exceeded.\n", PCRE_ERROR_MATCHLIMIT, PCRE_ERROR_RECURSIONLIMIT,
|
|
PCRE_ERROR_JIT_STACKLIMIT);
|
|
fprintf(stderr, "pcregrep: Check your regex for nested unlimited loops.\n");
|
|
}
|
|
exit(rc);
|
|
}
|
|
|
|
|
|
/*************************************************
|
|
* Add item to chain of patterns *
|
|
*************************************************/
|
|
|
|
/* Used to add an item onto a chain, or just return an unconnected item if the
|
|
"after" argument is NULL.
|
|
|
|
Arguments:
|
|
s pattern string to add
|
|
after if not NULL points to item to insert after
|
|
|
|
Returns: new pattern block
|
|
*/
|
|
|
|
static patstr *
|
|
add_pattern(char *s, patstr *after)
|
|
{
|
|
patstr *p = (patstr *)malloc(sizeof(patstr));
|
|
if (p == NULL)
|
|
{
|
|
fprintf(stderr, "pcregrep: malloc failed\n");
|
|
pcregrep_exit(2);
|
|
}
|
|
if (strlen(s) > MAXPATLEN)
|
|
{
|
|
fprintf(stderr, "pcregrep: pattern is too long (limit is %d bytes)\n",
|
|
MAXPATLEN);
|
|
return NULL;
|
|
}
|
|
p->next = NULL;
|
|
p->string = s;
|
|
p->compiled = NULL;
|
|
p->hint = NULL;
|
|
|
|
if (after != NULL)
|
|
{
|
|
p->next = after->next;
|
|
after->next = p;
|
|
}
|
|
return p;
|
|
}
|
|
|
|
|
|
/*************************************************
|
|
* Free chain of patterns *
|
|
*************************************************/
|
|
|
|
/* Used for several chains of patterns.
|
|
|
|
Argument: pointer to start of chain
|
|
Returns: nothing
|
|
*/
|
|
|
|
static void
|
|
free_pattern_chain(patstr *pc)
|
|
{
|
|
while (pc != NULL)
|
|
{
|
|
patstr *p = pc;
|
|
pc = p->next;
|
|
if (p->hint != NULL) pcre_free_study(p->hint);
|
|
if (p->compiled != NULL) pcre_free(p->compiled);
|
|
free(p);
|
|
}
|
|
}
|
|
|
|
|
|
/*************************************************
|
|
* Free chain of file names *
|
|
*************************************************/
|
|
|
|
/*
|
|
Argument: pointer to start of chain
|
|
Returns: nothing
|
|
*/
|
|
|
|
static void
|
|
free_file_chain(fnstr *fn)
|
|
{
|
|
while (fn != NULL)
|
|
{
|
|
fnstr *f = fn;
|
|
fn = f->next;
|
|
free(f);
|
|
}
|
|
}
|
|
|
|
|
|
/*************************************************
|
|
* OS-specific functions *
|
|
*************************************************/
|
|
|
|
/* These functions are defined so that they can be made system specific,
|
|
although at present the only ones are for Unix, Win32, and for "no support". */
|
|
|
|
|
|
/************* Directory scanning in Unix ***********/
|
|
|
|
#if defined HAVE_SYS_STAT_H && defined HAVE_DIRENT_H && defined HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <dirent.h>
|
|
|
|
typedef DIR directory_type;
|
|
#define FILESEP '/'
|
|
|
|
static int
|
|
isdirectory(char *filename)
|
|
{
|
|
struct stat statbuf;
|
|
if (stat(filename, &statbuf) < 0)
|
|
return 0; /* In the expectation that opening as a file will fail */
|
|
return (statbuf.st_mode & S_IFMT) == S_IFDIR;
|
|
}
|
|
|
|
static directory_type *
|
|
opendirectory(char *filename)
|
|
{
|
|
return opendir(filename);
|
|
}
|
|
|
|
static char *
|
|
readdirectory(directory_type *dir)
|
|
{
|
|
for (;;)
|
|
{
|
|
struct dirent *dent = readdir(dir);
|
|
if (dent == NULL) return NULL;
|
|
if (strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0)
|
|
return dent->d_name;
|
|
}
|
|
/* Control never reaches here */
|
|
}
|
|
|
|
static void
|
|
closedirectory(directory_type *dir)
|
|
{
|
|
closedir(dir);
|
|
}
|
|
|
|
|
|
/************* Test for regular file in Unix **********/
|
|
|
|
static int
|
|
isregfile(char *filename)
|
|
{
|
|
struct stat statbuf;
|
|
if (stat(filename, &statbuf) < 0)
|
|
return 1; /* In the expectation that opening as a file will fail */
|
|
return (statbuf.st_mode & S_IFMT) == S_IFREG;
|
|
}
|
|
|
|
|
|
/************* Test for a terminal in Unix **********/
|
|
|
|
static BOOL
|
|
is_stdout_tty(void)
|
|
{
|
|
return isatty(fileno(stdout));
|
|
}
|
|
|
|
static BOOL
|
|
is_file_tty(FILE *f)
|
|
{
|
|
return isatty(fileno(f));
|
|
}
|
|
|
|
|
|
/************* Directory scanning in Win32 ***********/
|
|
|
|
/* I (Philip Hazel) have no means of testing this code. It was contributed by
|
|
Lionel Fourquaux. David Burgess added a patch to define INVALID_FILE_ATTRIBUTES
|
|
when it did not exist. David Byron added a patch that moved the #include of
|
|
<windows.h> to before the INVALID_FILE_ATTRIBUTES definition rather than after.
|
|
The double test below stops gcc 4.4.4 grumbling that HAVE_WINDOWS_H is
|
|
undefined when it is indeed undefined. */
|
|
|
|
#elif defined HAVE_WINDOWS_H && HAVE_WINDOWS_H
|
|
|
|
#ifndef STRICT
|
|
# define STRICT
|
|
#endif
|
|
#ifndef WIN32_LEAN_AND_MEAN
|
|
# define WIN32_LEAN_AND_MEAN
|
|
#endif
|
|
|
|
#include <windows.h>
|
|
|
|
#ifndef INVALID_FILE_ATTRIBUTES
|
|
#define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF
|
|
#endif
|
|
|
|
typedef struct directory_type
|
|
{
|
|
HANDLE handle;
|
|
BOOL first;
|
|
WIN32_FIND_DATA data;
|
|
} directory_type;
|
|
|
|
#define FILESEP '/'
|
|
|
|
int
|
|
isdirectory(char *filename)
|
|
{
|
|
DWORD attr = GetFileAttributes(filename);
|
|
if (attr == INVALID_FILE_ATTRIBUTES)
|
|
return 0;
|
|
return (attr & FILE_ATTRIBUTE_DIRECTORY) != 0;
|
|
}
|
|
|
|
directory_type *
|
|
opendirectory(char *filename)
|
|
{
|
|
size_t len;
|
|
char *pattern;
|
|
directory_type *dir;
|
|
DWORD err;
|
|
len = strlen(filename);
|
|
pattern = (char *)malloc(len + 3);
|
|
dir = (directory_type *)malloc(sizeof(*dir));
|
|
if ((pattern == NULL) || (dir == NULL))
|
|
{
|
|
fprintf(stderr, "pcregrep: malloc failed\n");
|
|
pcregrep_exit(2);
|
|
}
|
|
memcpy(pattern, filename, len);
|
|
memcpy(&(pattern[len]), "\\*", 3);
|
|
dir->handle = FindFirstFile(pattern, &(dir->data));
|
|
if (dir->handle != INVALID_HANDLE_VALUE)
|
|
{
|
|
free(pattern);
|
|
dir->first = TRUE;
|
|
return dir;
|
|
}
|
|
err = GetLastError();
|
|
free(pattern);
|
|
free(dir);
|
|
errno = (err == ERROR_ACCESS_DENIED) ? EACCES : ENOENT;
|
|
return NULL;
|
|
}
|
|
|
|
char *
|
|
readdirectory(directory_type *dir)
|
|
{
|
|
for (;;)
|
|
{
|
|
if (!dir->first)
|
|
{
|
|
if (!FindNextFile(dir->handle, &(dir->data)))
|
|
return NULL;
|
|
}
|
|
else
|
|
{
|
|
dir->first = FALSE;
|
|
}
|
|
if (strcmp(dir->data.cFileName, ".") != 0 && strcmp(dir->data.cFileName, "..") != 0)
|
|
return dir->data.cFileName;
|
|
}
|
|
#ifndef _MSC_VER
|
|
return NULL; /* Keep compiler happy; never executed */
|
|
#endif
|
|
}
|
|
|
|
void
|
|
closedirectory(directory_type *dir)
|
|
{
|
|
FindClose(dir->handle);
|
|
free(dir);
|
|
}
|
|
|
|
|
|
/************* Test for regular file in Win32 **********/
|
|
|
|
/* I don't know how to do this, or if it can be done; assume all paths are
|
|
regular if they are not directories. */
|
|
|
|
int isregfile(char *filename)
|
|
{
|
|
return !isdirectory(filename);
|
|
}
|
|
|
|
|
|
/************* Test for a terminal in Win32 **********/
|
|
|
|
/* I don't know how to do this; assume never */
|
|
|
|
static BOOL
|
|
is_stdout_tty(void)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
static BOOL
|
|
is_file_tty(FILE *f)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/************* Directory scanning when we can't do it ***********/
|
|
|
|
/* The type is void, and apart from isdirectory(), the functions do nothing. */
|
|
|
|
#else
|
|
|
|
#define FILESEP 0
|
|
typedef void directory_type;
|
|
|
|
int isdirectory(char *filename) { return 0; }
|
|
directory_type * opendirectory(char *filename) { return (directory_type*)0;}
|
|
char *readdirectory(directory_type *dir) { return (char*)0;}
|
|
void closedirectory(directory_type *dir) {}
|
|
|
|
|
|
/************* Test for regular when we can't do it **********/
|
|
|
|
/* Assume all files are regular. */
|
|
|
|
int isregfile(char *filename) { return 1; }
|
|
|
|
|
|
/************* Test for a terminal when we can't do it **********/
|
|
|
|
static BOOL
|
|
is_stdout_tty(void)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
static BOOL
|
|
is_file_tty(FILE *f)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef HAVE_STRERROR
|
|
/*************************************************
|
|
* Provide strerror() for non-ANSI libraries *
|
|
*************************************************/
|
|
|
|
/* Some old-fashioned systems still around (e.g. SunOS4) don't have strerror()
|
|
in their libraries, but can provide the same facility by this simple
|
|
alternative function. */
|
|
|
|
extern int sys_nerr;
|
|
extern char *sys_errlist[];
|
|
|
|
char *
|
|
strerror(int n)
|
|
{
|
|
if (n < 0 || n >= sys_nerr) return "unknown error number";
|
|
return sys_errlist[n];
|
|
}
|
|
#endif /* HAVE_STRERROR */
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Usage function *
|
|
*************************************************/
|
|
|
|
static int
|
|
usage(int rc)
|
|
{
|
|
option_item *op;
|
|
fprintf(stderr, "Usage: pcregrep [-");
|
|
for (op = optionlist; op->one_char != 0; op++)
|
|
{
|
|
if (op->one_char > 0) fprintf(stderr, "%c", op->one_char);
|
|
}
|
|
fprintf(stderr, "] [long options] [pattern] [files]\n");
|
|
fprintf(stderr, "Type `pcregrep --help' for more information and the long "
|
|
"options.\n");
|
|
return rc;
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Help function *
|
|
*************************************************/
|
|
|
|
static void
|
|
help(void)
|
|
{
|
|
option_item *op;
|
|
|
|
printf("Usage: pcregrep [OPTION]... [PATTERN] [FILE1 FILE2 ...]\n");
|
|
printf("Search for PATTERN in each FILE or standard input.\n");
|
|
printf("PATTERN must be present if neither -e nor -f is used.\n");
|
|
printf("\"-\" can be used as a file name to mean STDIN.\n");
|
|
|
|
#ifdef SUPPORT_LIBZ
|
|
printf("Files whose names end in .gz are read using zlib.\n");
|
|
#endif
|
|
|
|
#ifdef SUPPORT_LIBBZ2
|
|
printf("Files whose names end in .bz2 are read using bzlib2.\n");
|
|
#endif
|
|
|
|
#if defined SUPPORT_LIBZ || defined SUPPORT_LIBBZ2
|
|
printf("Other files and the standard input are read as plain files.\n\n");
|
|
#else
|
|
printf("All files are read as plain files, without any interpretation.\n\n");
|
|
#endif
|
|
|
|
printf("Example: pcregrep -i 'hello.*world' menu.h main.c\n\n");
|
|
printf("Options:\n");
|
|
|
|
for (op = optionlist; op->one_char != 0; op++)
|
|
{
|
|
int n;
|
|
char s[4];
|
|
|
|
/* Two options were accidentally implemented and documented with underscores
|
|
instead of hyphens in their names, something that was not noticed for quite a
|
|
few releases. When fixing this, I left the underscored versions in the list
|
|
in case people were using them. However, we don't want to display them in the
|
|
help data. There are no other options that contain underscores, and we do not
|
|
expect ever to implement such options. Therefore, just omit any option that
|
|
contains an underscore. */
|
|
|
|
if (strchr(op->long_name, '_') != NULL) continue;
|
|
|
|
if (op->one_char > 0 && (op->long_name)[0] == 0)
|
|
n = 31 - printf(" -%c", op->one_char);
|
|
else
|
|
{
|
|
if (op->one_char > 0) sprintf(s, "-%c,", op->one_char);
|
|
else strcpy(s, " ");
|
|
n = 31 - printf(" %s --%s", s, op->long_name);
|
|
}
|
|
|
|
if (n < 1) n = 1;
|
|
printf("%.*s%s\n", n, " ", op->help_text);
|
|
}
|
|
|
|
printf("\nNumbers may be followed by K or M, e.g. --buffer-size=100K.\n");
|
|
printf("The default value for --buffer-size is %d.\n", PCREGREP_BUFSIZE);
|
|
printf("When reading patterns or file names from a file, trailing white\n");
|
|
printf("space is removed and blank lines are ignored.\n");
|
|
printf("The maximum size of any pattern is %d bytes.\n", MAXPATLEN);
|
|
|
|
printf("\nWith no FILEs, read standard input. If fewer than two FILEs given, assume -h.\n");
|
|
printf("Exit status is 0 if any matches, 1 if no matches, and 2 if trouble.\n");
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Test exclude/includes *
|
|
*************************************************/
|
|
|
|
/* If any exclude pattern matches, the path is excluded. Otherwise, unless
|
|
there are no includes, the path must match an include pattern.
|
|
|
|
Arguments:
|
|
path the path to be matched
|
|
ip the chain of include patterns
|
|
ep the chain of exclude patterns
|
|
|
|
Returns: TRUE if the path is not excluded
|
|
*/
|
|
|
|
static BOOL
|
|
test_incexc(char *path, patstr *ip, patstr *ep)
|
|
{
|
|
int plen = strlen(path);
|
|
|
|
for (; ep != NULL; ep = ep->next)
|
|
{
|
|
if (pcre_exec(ep->compiled, NULL, path, plen, 0, 0, NULL, 0) >= 0)
|
|
return FALSE;
|
|
}
|
|
|
|
if (ip == NULL) return TRUE;
|
|
|
|
for (; ip != NULL; ip = ip->next)
|
|
{
|
|
if (pcre_exec(ip->compiled, NULL, path, plen, 0, 0, NULL, 0) >= 0)
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Decode integer argument value *
|
|
*************************************************/
|
|
|
|
/* Integer arguments can be followed by K or M. Avoid the use of strtoul()
|
|
because SunOS4 doesn't have it. This is used only for unpicking arguments, so
|
|
just keep it simple.
|
|
|
|
Arguments:
|
|
option_data the option data string
|
|
op the option item (for error messages)
|
|
longop TRUE if option given in long form
|
|
|
|
Returns: a long integer
|
|
*/
|
|
|
|
static long int
|
|
decode_number(char *option_data, option_item *op, BOOL longop)
|
|
{
|
|
unsigned long int n = 0;
|
|
char *endptr = option_data;
|
|
while (*endptr != 0 && isspace((unsigned char)(*endptr))) endptr++;
|
|
while (isdigit((unsigned char)(*endptr)))
|
|
n = n * 10 + (int)(*endptr++ - '0');
|
|
if (toupper(*endptr) == 'K')
|
|
{
|
|
n *= 1024;
|
|
endptr++;
|
|
}
|
|
else if (toupper(*endptr) == 'M')
|
|
{
|
|
n *= 1024*1024;
|
|
endptr++;
|
|
}
|
|
|
|
if (*endptr != 0) /* Error */
|
|
{
|
|
if (longop)
|
|
{
|
|
char *equals = strchr(op->long_name, '=');
|
|
int nlen = (equals == NULL)? (int)strlen(op->long_name) :
|
|
(int)(equals - op->long_name);
|
|
fprintf(stderr, "pcregrep: Malformed number \"%s\" after --%.*s\n",
|
|
option_data, nlen, op->long_name);
|
|
}
|
|
else
|
|
fprintf(stderr, "pcregrep: Malformed number \"%s\" after -%c\n",
|
|
option_data, op->one_char);
|
|
pcregrep_exit(usage(2));
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Add item to a chain of numbers *
|
|
*************************************************/
|
|
|
|
/* Used to add an item onto a chain, or just return an unconnected item if the
|
|
"after" argument is NULL.
|
|
|
|
Arguments:
|
|
n the number to add
|
|
after if not NULL points to item to insert after
|
|
|
|
Returns: new number block
|
|
*/
|
|
|
|
static omstr *
|
|
add_number(int n, omstr *after)
|
|
{
|
|
omstr *om = (omstr *)malloc(sizeof(omstr));
|
|
|
|
if (om == NULL)
|
|
{
|
|
fprintf(stderr, "pcregrep: malloc failed\n");
|
|
pcregrep_exit(2);
|
|
}
|
|
om->next = NULL;
|
|
om->groupnum = n;
|
|
|
|
if (after != NULL)
|
|
{
|
|
om->next = after->next;
|
|
after->next = om;
|
|
}
|
|
return om;
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Read one line of input *
|
|
*************************************************/
|
|
|
|
/* Normally, input is read using fread() into a large buffer, so many lines may
|
|
be read at once. However, doing this for tty input means that no output appears
|
|
until a lot of input has been typed. Instead, tty input is handled line by
|
|
line. We cannot use fgets() for this, because it does not stop at a binary
|
|
zero, and therefore there is no way of telling how many characters it has read,
|
|
because there may be binary zeros embedded in the data.
|
|
|
|
Arguments:
|
|
buffer the buffer to read into
|
|
length the maximum number of characters to read
|
|
f the file
|
|
|
|
Returns: the number of characters read, zero at end of file
|
|
*/
|
|
|
|
static unsigned int
|
|
read_one_line(char *buffer, int length, FILE *f)
|
|
{
|
|
int c;
|
|
int yield = 0;
|
|
while ((c = fgetc(f)) != EOF)
|
|
{
|
|
buffer[yield++] = c;
|
|
if (c == '\n' || yield >= length) break;
|
|
}
|
|
return yield;
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Find end of line *
|
|
*************************************************/
|
|
|
|
/* The length of the endline sequence that is found is set via lenptr. This may
|
|
be zero at the very end of the file if there is no line-ending sequence there.
|
|
|
|
Arguments:
|
|
p current position in line
|
|
endptr end of available data
|
|
lenptr where to put the length of the eol sequence
|
|
|
|
Returns: pointer after the last byte of the line,
|
|
including the newline byte(s)
|
|
*/
|
|
|
|
static char *
|
|
end_of_line(char *p, char *endptr, int *lenptr)
|
|
{
|
|
switch(endlinetype)
|
|
{
|
|
default: /* Just in case */
|
|
case EL_LF:
|
|
while (p < endptr && *p != '\n') p++;
|
|
if (p < endptr)
|
|
{
|
|
*lenptr = 1;
|
|
return p + 1;
|
|
}
|
|
*lenptr = 0;
|
|
return endptr;
|
|
|
|
case EL_CR:
|
|
while (p < endptr && *p != '\r') p++;
|
|
if (p < endptr)
|
|
{
|
|
*lenptr = 1;
|
|
return p + 1;
|
|
}
|
|
*lenptr = 0;
|
|
return endptr;
|
|
|
|
case EL_CRLF:
|
|
for (;;)
|
|
{
|
|
while (p < endptr && *p != '\r') p++;
|
|
if (++p >= endptr)
|
|
{
|
|
*lenptr = 0;
|
|
return endptr;
|
|
}
|
|
if (*p == '\n')
|
|
{
|
|
*lenptr = 2;
|
|
return p + 1;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case EL_ANYCRLF:
|
|
while (p < endptr)
|
|
{
|
|
int extra = 0;
|
|
register int c = *((unsigned char *)p);
|
|
|
|
if (utf8 && c >= 0xc0)
|
|
{
|
|
int gcii, gcss;
|
|
extra = utf8_table4[c & 0x3f]; /* Number of additional bytes */
|
|
gcss = 6*extra;
|
|
c = (c & utf8_table3[extra]) << gcss;
|
|
for (gcii = 1; gcii <= extra; gcii++)
|
|
{
|
|
gcss -= 6;
|
|
c |= (p[gcii] & 0x3f) << gcss;
|
|
}
|
|
}
|
|
|
|
p += 1 + extra;
|
|
|
|
switch (c)
|
|
{
|
|
case '\n':
|
|
*lenptr = 1;
|
|
return p;
|
|
|
|
case '\r':
|
|
if (p < endptr && *p == '\n')
|
|
{
|
|
*lenptr = 2;
|
|
p++;
|
|
}
|
|
else *lenptr = 1;
|
|
return p;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
} /* End of loop for ANYCRLF case */
|
|
|
|
*lenptr = 0; /* Must have hit the end */
|
|
return endptr;
|
|
|
|
case EL_ANY:
|
|
while (p < endptr)
|
|
{
|
|
int extra = 0;
|
|
register int c = *((unsigned char *)p);
|
|
|
|
if (utf8 && c >= 0xc0)
|
|
{
|
|
int gcii, gcss;
|
|
extra = utf8_table4[c & 0x3f]; /* Number of additional bytes */
|
|
gcss = 6*extra;
|
|
c = (c & utf8_table3[extra]) << gcss;
|
|
for (gcii = 1; gcii <= extra; gcii++)
|
|
{
|
|
gcss -= 6;
|
|
c |= (p[gcii] & 0x3f) << gcss;
|
|
}
|
|
}
|
|
|
|
p += 1 + extra;
|
|
|
|
switch (c)
|
|
{
|
|
case '\n': /* LF */
|
|
case '\v': /* VT */
|
|
case '\f': /* FF */
|
|
*lenptr = 1;
|
|
return p;
|
|
|
|
case '\r': /* CR */
|
|
if (p < endptr && *p == '\n')
|
|
{
|
|
*lenptr = 2;
|
|
p++;
|
|
}
|
|
else *lenptr = 1;
|
|
return p;
|
|
|
|
#ifndef EBCDIC
|
|
case 0x85: /* Unicode NEL */
|
|
*lenptr = utf8? 2 : 1;
|
|
return p;
|
|
|
|
case 0x2028: /* Unicode LS */
|
|
case 0x2029: /* Unicode PS */
|
|
*lenptr = 3;
|
|
return p;
|
|
#endif /* Not EBCDIC */
|
|
|
|
default:
|
|
break;
|
|
}
|
|
} /* End of loop for ANY case */
|
|
|
|
*lenptr = 0; /* Must have hit the end */
|
|
return endptr;
|
|
} /* End of overall switch */
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Find start of previous line *
|
|
*************************************************/
|
|
|
|
/* This is called when looking back for before lines to print.
|
|
|
|
Arguments:
|
|
p start of the subsequent line
|
|
startptr start of available data
|
|
|
|
Returns: pointer to the start of the previous line
|
|
*/
|
|
|
|
static char *
|
|
previous_line(char *p, char *startptr)
|
|
{
|
|
switch(endlinetype)
|
|
{
|
|
default: /* Just in case */
|
|
case EL_LF:
|
|
p--;
|
|
while (p > startptr && p[-1] != '\n') p--;
|
|
return p;
|
|
|
|
case EL_CR:
|
|
p--;
|
|
while (p > startptr && p[-1] != '\n') p--;
|
|
return p;
|
|
|
|
case EL_CRLF:
|
|
for (;;)
|
|
{
|
|
p -= 2;
|
|
while (p > startptr && p[-1] != '\n') p--;
|
|
if (p <= startptr + 1 || p[-2] == '\r') return p;
|
|
}
|
|
return p; /* But control should never get here */
|
|
|
|
case EL_ANY:
|
|
case EL_ANYCRLF:
|
|
if (*(--p) == '\n' && p > startptr && p[-1] == '\r') p--;
|
|
if (utf8) while ((*p & 0xc0) == 0x80) p--;
|
|
|
|
while (p > startptr)
|
|
{
|
|
register unsigned int c;
|
|
char *pp = p - 1;
|
|
|
|
if (utf8)
|
|
{
|
|
int extra = 0;
|
|
while ((*pp & 0xc0) == 0x80) pp--;
|
|
c = *((unsigned char *)pp);
|
|
if (c >= 0xc0)
|
|
{
|
|
int gcii, gcss;
|
|
extra = utf8_table4[c & 0x3f]; /* Number of additional bytes */
|
|
gcss = 6*extra;
|
|
c = (c & utf8_table3[extra]) << gcss;
|
|
for (gcii = 1; gcii <= extra; gcii++)
|
|
{
|
|
gcss -= 6;
|
|
c |= (pp[gcii] & 0x3f) << gcss;
|
|
}
|
|
}
|
|
}
|
|
else c = *((unsigned char *)pp);
|
|
|
|
if (endlinetype == EL_ANYCRLF) switch (c)
|
|
{
|
|
case '\n': /* LF */
|
|
case '\r': /* CR */
|
|
return p;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
else switch (c)
|
|
{
|
|
case '\n': /* LF */
|
|
case '\v': /* VT */
|
|
case '\f': /* FF */
|
|
case '\r': /* CR */
|
|
#ifndef EBCDIE
|
|
case 0x85: /* Unicode NEL */
|
|
case 0x2028: /* Unicode LS */
|
|
case 0x2029: /* Unicode PS */
|
|
#endif /* Not EBCDIC */
|
|
return p;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
p = pp; /* Back one character */
|
|
} /* End of loop for ANY case */
|
|
|
|
return startptr; /* Hit start of data */
|
|
} /* End of overall switch */
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Print the previous "after" lines *
|
|
*************************************************/
|
|
|
|
/* This is called if we are about to lose said lines because of buffer filling,
|
|
and at the end of the file. The data in the line is written using fwrite() so
|
|
that a binary zero does not terminate it.
|
|
|
|
Arguments:
|
|
lastmatchnumber the number of the last matching line, plus one
|
|
lastmatchrestart where we restarted after the last match
|
|
endptr end of available data
|
|
printname filename for printing
|
|
|
|
Returns: nothing
|
|
*/
|
|
|
|
static void
|
|
do_after_lines(int lastmatchnumber, char *lastmatchrestart, char *endptr,
|
|
char *printname)
|
|
{
|
|
if (after_context > 0 && lastmatchnumber > 0)
|
|
{
|
|
int count = 0;
|
|
while (lastmatchrestart < endptr && count++ < after_context)
|
|
{
|
|
int ellength;
|
|
char *pp = lastmatchrestart;
|
|
if (printname != NULL) fprintf(stdout, "%s-", printname);
|
|
if (number) fprintf(stdout, "%d-", lastmatchnumber++);
|
|
pp = end_of_line(pp, endptr, &ellength);
|
|
FWRITE(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
|
|
lastmatchrestart = pp;
|
|
}
|
|
hyphenpending = TRUE;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Apply patterns to subject till one matches *
|
|
*************************************************/
|
|
|
|
/* This function is called to run through all patterns, looking for a match. It
|
|
is used multiple times for the same subject when colouring is enabled, in order
|
|
to find all possible matches.
|
|
|
|
Arguments:
|
|
matchptr the start of the subject
|
|
length the length of the subject to match
|
|
startoffset where to start matching
|
|
offsets the offets vector to fill in
|
|
mrc address of where to put the result of pcre_exec()
|
|
|
|
Returns: TRUE if there was a match
|
|
FALSE if there was no match
|
|
invert if there was a non-fatal error
|
|
*/
|
|
|
|
static BOOL
|
|
match_patterns(char *matchptr, size_t length, int startoffset, int *offsets,
|
|
int *mrc)
|
|
{
|
|
int i;
|
|
size_t slen = length;
|
|
patstr *p = patterns;
|
|
const char *msg = "this text:\n\n";
|
|
|
|
if (slen > 200)
|
|
{
|
|
slen = 200;
|
|
msg = "text that starts:\n\n";
|
|
}
|
|
for (i = 1; p != NULL; p = p->next, i++)
|
|
{
|
|
*mrc = pcre_exec(p->compiled, p->hint, matchptr, (int)length,
|
|
startoffset, PCRE_NOTEMPTY, offsets, OFFSET_SIZE);
|
|
if (*mrc >= 0) return TRUE;
|
|
if (*mrc == PCRE_ERROR_NOMATCH) continue;
|
|
fprintf(stderr, "pcregrep: pcre_exec() gave error %d while matching ", *mrc);
|
|
if (patterns->next != NULL) fprintf(stderr, "pattern number %d to ", i);
|
|
fprintf(stderr, "%s", msg);
|
|
FWRITE(matchptr, 1, slen, stderr); /* In case binary zero included */
|
|
fprintf(stderr, "\n\n");
|
|
if (*mrc == PCRE_ERROR_MATCHLIMIT || *mrc == PCRE_ERROR_RECURSIONLIMIT ||
|
|
*mrc == PCRE_ERROR_JIT_STACKLIMIT)
|
|
resource_error = TRUE;
|
|
if (error_count++ > 20)
|
|
{
|
|
fprintf(stderr, "pcregrep: Too many errors - abandoned.\n");
|
|
pcregrep_exit(2);
|
|
}
|
|
return invert; /* No more matching; don't show the line again */
|
|
}
|
|
|
|
return FALSE; /* No match, no errors */
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Grep an individual file *
|
|
*************************************************/
|
|
|
|
/* This is called from grep_or_recurse() below. It uses a buffer that is three
|
|
times the value of bufthird. The matching point is never allowed to stray into
|
|
the top third of the buffer, thus keeping more of the file available for
|
|
context printing or for multiline scanning. For large files, the pointer will
|
|
be in the middle third most of the time, so the bottom third is available for
|
|
"before" context printing.
|
|
|
|
Arguments:
|
|
handle the fopened FILE stream for a normal file
|
|
the gzFile pointer when reading is via libz
|
|
the BZFILE pointer when reading is via libbz2
|
|
frtype FR_PLAIN, FR_LIBZ, or FR_LIBBZ2
|
|
filename the file name or NULL (for errors)
|
|
printname the file name if it is to be printed for each match
|
|
or NULL if the file name is not to be printed
|
|
it cannot be NULL if filenames[_nomatch]_only is set
|
|
|
|
Returns: 0 if there was at least one match
|
|
1 otherwise (no matches)
|
|
2 if an overlong line is encountered
|
|
3 if there is a read error on a .bz2 file
|
|
*/
|
|
|
|
static int
|
|
pcregrep(void *handle, int frtype, char *filename, char *printname)
|
|
{
|
|
int rc = 1;
|
|
int linenumber = 1;
|
|
int lastmatchnumber = 0;
|
|
int count = 0;
|
|
int filepos = 0;
|
|
int offsets[OFFSET_SIZE];
|
|
char *lastmatchrestart = NULL;
|
|
char *ptr = main_buffer;
|
|
char *endptr;
|
|
size_t bufflength;
|
|
BOOL binary = FALSE;
|
|
BOOL endhyphenpending = FALSE;
|
|
BOOL input_line_buffered = line_buffered;
|
|
FILE *in = NULL; /* Ensure initialized */
|
|
|
|
#ifdef SUPPORT_LIBZ
|
|
gzFile ingz = NULL;
|
|
#endif
|
|
|
|
#ifdef SUPPORT_LIBBZ2
|
|
BZFILE *inbz2 = NULL;
|
|
#endif
|
|
|
|
|
|
/* Do the first read into the start of the buffer and set up the pointer to end
|
|
of what we have. In the case of libz, a non-zipped .gz file will be read as a
|
|
plain file. However, if a .bz2 file isn't actually bzipped, the first read will
|
|
fail. */
|
|
|
|
(void)frtype;
|
|
|
|
#ifdef SUPPORT_LIBZ
|
|
if (frtype == FR_LIBZ)
|
|
{
|
|
ingz = (gzFile)handle;
|
|
bufflength = gzread (ingz, main_buffer, bufsize);
|
|
}
|
|
else
|
|
#endif
|
|
|
|
#ifdef SUPPORT_LIBBZ2
|
|
if (frtype == FR_LIBBZ2)
|
|
{
|
|
inbz2 = (BZFILE *)handle;
|
|
bufflength = BZ2_bzread(inbz2, main_buffer, bufsize);
|
|
if ((int)bufflength < 0) return 2; /* Gotcha: bufflength is size_t; */
|
|
} /* without the cast it is unsigned. */
|
|
else
|
|
#endif
|
|
|
|
{
|
|
in = (FILE *)handle;
|
|
if (is_file_tty(in)) input_line_buffered = TRUE;
|
|
bufflength = input_line_buffered?
|
|
read_one_line(main_buffer, bufsize, in) :
|
|
fread(main_buffer, 1, bufsize, in);
|
|
}
|
|
|
|
endptr = main_buffer + bufflength;
|
|
|
|
/* Unless binary-files=text, see if we have a binary file. This uses the same
|
|
rule as GNU grep, namely, a search for a binary zero byte near the start of the
|
|
file. */
|
|
|
|
if (binary_files != BIN_TEXT)
|
|
{
|
|
binary =
|
|
memchr(main_buffer, 0, (bufflength > 1024)? 1024 : bufflength) != NULL;
|
|
if (binary && binary_files == BIN_NOMATCH) return 1;
|
|
}
|
|
|
|
/* Loop while the current pointer is not at the end of the file. For large
|
|
files, endptr will be at the end of the buffer when we are in the middle of the
|
|
file, but ptr will never get there, because as soon as it gets over 2/3 of the
|
|
way, the buffer is shifted left and re-filled. */
|
|
|
|
while (ptr < endptr)
|
|
{
|
|
int endlinelength;
|
|
int mrc = 0;
|
|
int startoffset = 0;
|
|
BOOL match;
|
|
char *matchptr = ptr;
|
|
char *t = ptr;
|
|
size_t length, linelength;
|
|
|
|
/* At this point, ptr is at the start of a line. We need to find the length
|
|
of the subject string to pass to pcre_exec(). In multiline mode, it is the
|
|
length remainder of the data in the buffer. Otherwise, it is the length of
|
|
the next line, excluding the terminating newline. After matching, we always
|
|
advance by the length of the next line. In multiline mode the PCRE_FIRSTLINE
|
|
option is used for compiling, so that any match is constrained to be in the
|
|
first line. */
|
|
|
|
t = end_of_line(t, endptr, &endlinelength);
|
|
linelength = t - ptr - endlinelength;
|
|
length = multiline? (size_t)(endptr - ptr) : linelength;
|
|
|
|
/* Check to see if the line we are looking at extends right to the very end
|
|
of the buffer without a line terminator. This means the line is too long to
|
|
handle. */
|
|
|
|
if (endlinelength == 0 && t == main_buffer + bufsize)
|
|
{
|
|
fprintf(stderr, "pcregrep: line %d%s%s is too long for the internal buffer\n"
|
|
"pcregrep: check the --buffer-size option\n",
|
|
linenumber,
|
|
(filename == NULL)? "" : " of file ",
|
|
(filename == NULL)? "" : filename);
|
|
return 2;
|
|
}
|
|
|
|
/* Extra processing for Jeffrey Friedl's debugging. */
|
|
|
|
#ifdef JFRIEDL_DEBUG
|
|
if (jfriedl_XT || jfriedl_XR)
|
|
{
|
|
# include <sys/time.h>
|
|
# include <time.h>
|
|
struct timeval start_time, end_time;
|
|
struct timezone dummy;
|
|
int i;
|
|
|
|
if (jfriedl_XT)
|
|
{
|
|
unsigned long newlen = length * jfriedl_XT + strlen(jfriedl_prefix) + strlen(jfriedl_postfix);
|
|
const char *orig = ptr;
|
|
ptr = malloc(newlen + 1);
|
|
if (!ptr) {
|
|
printf("out of memory");
|
|
pcregrep_exit(2);
|
|
}
|
|
endptr = ptr;
|
|
strcpy(endptr, jfriedl_prefix); endptr += strlen(jfriedl_prefix);
|
|
for (i = 0; i < jfriedl_XT; i++) {
|
|
strncpy(endptr, orig, length);
|
|
endptr += length;
|
|
}
|
|
strcpy(endptr, jfriedl_postfix); endptr += strlen(jfriedl_postfix);
|
|
length = newlen;
|
|
}
|
|
|
|
if (gettimeofday(&start_time, &dummy) != 0)
|
|
perror("bad gettimeofday");
|
|
|
|
|
|
for (i = 0; i < jfriedl_XR; i++)
|
|
match = (pcre_exec(patterns->compiled, patterns->hint, ptr, length, 0,
|
|
PCRE_NOTEMPTY, offsets, OFFSET_SIZE) >= 0);
|
|
|
|
if (gettimeofday(&end_time, &dummy) != 0)
|
|
perror("bad gettimeofday");
|
|
|
|
double delta = ((end_time.tv_sec + (end_time.tv_usec / 1000000.0))
|
|
-
|
|
(start_time.tv_sec + (start_time.tv_usec / 1000000.0)));
|
|
|
|
printf("%s TIMER[%.4f]\n", match ? "MATCH" : "FAIL", delta);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* We come back here after a match when show_only_matching is set, in order
|
|
to find any further matches in the same line. This applies to
|
|
--only-matching, --file-offsets, and --line-offsets. */
|
|
|
|
ONLY_MATCHING_RESTART:
|
|
|
|
/* Run through all the patterns until one matches or there is an error other
|
|
than NOMATCH. This code is in a subroutine so that it can be re-used for
|
|
finding subsequent matches when colouring matched lines. */
|
|
|
|
match = match_patterns(matchptr, length, startoffset, offsets, &mrc);
|
|
|
|
/* If it's a match or a not-match (as required), do what's wanted. */
|
|
|
|
if (match != invert)
|
|
{
|
|
BOOL hyphenprinted = FALSE;
|
|
|
|
/* We've failed if we want a file that doesn't have any matches. */
|
|
|
|
if (filenames == FN_NOMATCH_ONLY) return 1;
|
|
|
|
/* Just count if just counting is wanted. */
|
|
|
|
if (count_only) count++;
|
|
|
|
/* When handling a binary file and binary-files==binary, the "binary"
|
|
variable will be set true (it's false in all other cases). In this
|
|
situation we just want to output the file name. No need to scan further. */
|
|
|
|
else if (binary)
|
|
{
|
|
fprintf(stdout, "Binary file %s matches\n", filename);
|
|
return 0;
|
|
}
|
|
|
|
/* If all we want is a file name, there is no need to scan any more lines
|
|
in the file. */
|
|
|
|
else if (filenames == FN_MATCH_ONLY)
|
|
{
|
|
fprintf(stdout, "%s\n", printname);
|
|
return 0;
|
|
}
|
|
|
|
/* Likewise, if all we want is a yes/no answer. */
|
|
|
|
else if (quiet) return 0;
|
|
|
|
/* The --only-matching option prints just the substring that matched,
|
|
and/or one or more captured portions of it, as long as these strings are
|
|
not empty. The --file-offsets and --line-offsets options output offsets for
|
|
the matching substring (all three set show_only_matching). None of these
|
|
mutually exclusive options prints any context. Afterwards, adjust the start
|
|
and then jump back to look for further matches in the same line. If we are
|
|
in invert mode, however, nothing is printed and we do not restart - this
|
|
could still be useful because the return code is set. */
|
|
|
|
else if (show_only_matching)
|
|
{
|
|
if (!invert)
|
|
{
|
|
if (printname != NULL) fprintf(stdout, "%s:", printname);
|
|
if (number) fprintf(stdout, "%d:", linenumber);
|
|
|
|
/* Handle --line-offsets */
|
|
|
|
if (line_offsets)
|
|
fprintf(stdout, "%d,%d\n", (int)(matchptr + offsets[0] - ptr),
|
|
offsets[1] - offsets[0]);
|
|
|
|
/* Handle --file-offsets */
|
|
|
|
else if (file_offsets)
|
|
fprintf(stdout, "%d,%d\n",
|
|
(int)(filepos + matchptr + offsets[0] - ptr),
|
|
offsets[1] - offsets[0]);
|
|
|
|
/* Handle --only-matching, which may occur many times */
|
|
|
|
else
|
|
{
|
|
BOOL printed = FALSE;
|
|
omstr *om;
|
|
|
|
for (om = only_matching; om != NULL; om = om->next)
|
|
{
|
|
int n = om->groupnum;
|
|
if (n < mrc)
|
|
{
|
|
int plen = offsets[2*n + 1] - offsets[2*n];
|
|
if (plen > 0)
|
|
{
|
|
if (printed) fprintf(stdout, "%s", om_separator);
|
|
if (do_colour) fprintf(stdout, "%c[%sm", 0x1b, colour_string);
|
|
FWRITE(matchptr + offsets[n*2], 1, plen, stdout);
|
|
if (do_colour) fprintf(stdout, "%c[00m", 0x1b);
|
|
printed = TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (printed || printname != NULL || number) fprintf(stdout, "\n");
|
|
}
|
|
|
|
/* Prepare to repeat to find the next match */
|
|
|
|
match = FALSE;
|
|
if (line_buffered) fflush(stdout);
|
|
rc = 0; /* Had some success */
|
|
startoffset = offsets[1]; /* Restart after the match */
|
|
goto ONLY_MATCHING_RESTART;
|
|
}
|
|
}
|
|
|
|
/* This is the default case when none of the above options is set. We print
|
|
the matching lines(s), possibly preceded and/or followed by other lines of
|
|
context. */
|
|
|
|
else
|
|
{
|
|
/* See if there is a requirement to print some "after" lines from a
|
|
previous match. We never print any overlaps. */
|
|
|
|
if (after_context > 0 && lastmatchnumber > 0)
|
|
{
|
|
int ellength;
|
|
int linecount = 0;
|
|
char *p = lastmatchrestart;
|
|
|
|
while (p < ptr && linecount < after_context)
|
|
{
|
|
p = end_of_line(p, ptr, &ellength);
|
|
linecount++;
|
|
}
|
|
|
|
/* It is important to advance lastmatchrestart during this printing so
|
|
that it interacts correctly with any "before" printing below. Print
|
|
each line's data using fwrite() in case there are binary zeroes. */
|
|
|
|
while (lastmatchrestart < p)
|
|
{
|
|
char *pp = lastmatchrestart;
|
|
if (printname != NULL) fprintf(stdout, "%s-", printname);
|
|
if (number) fprintf(stdout, "%d-", lastmatchnumber++);
|
|
pp = end_of_line(pp, endptr, &ellength);
|
|
FWRITE(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
|
|
lastmatchrestart = pp;
|
|
}
|
|
if (lastmatchrestart != ptr) hyphenpending = TRUE;
|
|
}
|
|
|
|
/* If there were non-contiguous lines printed above, insert hyphens. */
|
|
|
|
if (hyphenpending)
|
|
{
|
|
fprintf(stdout, "--\n");
|
|
hyphenpending = FALSE;
|
|
hyphenprinted = TRUE;
|
|
}
|
|
|
|
/* See if there is a requirement to print some "before" lines for this
|
|
match. Again, don't print overlaps. */
|
|
|
|
if (before_context > 0)
|
|
{
|
|
int linecount = 0;
|
|
char *p = ptr;
|
|
|
|
while (p > main_buffer && (lastmatchnumber == 0 || p > lastmatchrestart) &&
|
|
linecount < before_context)
|
|
{
|
|
linecount++;
|
|
p = previous_line(p, main_buffer);
|
|
}
|
|
|
|
if (lastmatchnumber > 0 && p > lastmatchrestart && !hyphenprinted)
|
|
fprintf(stdout, "--\n");
|
|
|
|
while (p < ptr)
|
|
{
|
|
int ellength;
|
|
char *pp = p;
|
|
if (printname != NULL) fprintf(stdout, "%s-", printname);
|
|
if (number) fprintf(stdout, "%d-", linenumber - linecount--);
|
|
pp = end_of_line(pp, endptr, &ellength);
|
|
FWRITE(p, 1, pp - p, stdout);
|
|
p = pp;
|
|
}
|
|
}
|
|
|
|
/* Now print the matching line(s); ensure we set hyphenpending at the end
|
|
of the file if any context lines are being output. */
|
|
|
|
if (after_context > 0 || before_context > 0)
|
|
endhyphenpending = TRUE;
|
|
|
|
if (printname != NULL) fprintf(stdout, "%s:", printname);
|
|
if (number) fprintf(stdout, "%d:", linenumber);
|
|
|
|
/* In multiline mode, we want to print to the end of the line in which
|
|
the end of the matched string is found, so we adjust linelength and the
|
|
line number appropriately, but only when there actually was a match
|
|
(invert not set). Because the PCRE_FIRSTLINE option is set, the start of
|
|
the match will always be before the first newline sequence. */
|
|
|
|
if (multiline & !invert)
|
|
{
|
|
char *endmatch = ptr + offsets[1];
|
|
t = ptr;
|
|
while (t < endmatch)
|
|
{
|
|
t = end_of_line(t, endptr, &endlinelength);
|
|
if (t < endmatch) linenumber++; else break;
|
|
}
|
|
linelength = t - ptr - endlinelength;
|
|
}
|
|
|
|
/*** NOTE: Use only fwrite() to output the data line, so that binary
|
|
zeroes are treated as just another data character. */
|
|
|
|
/* This extra option, for Jeffrey Friedl's debugging requirements,
|
|
replaces the matched string, or a specific captured string if it exists,
|
|
with X. When this happens, colouring is ignored. */
|
|
|
|
#ifdef JFRIEDL_DEBUG
|
|
if (S_arg >= 0 && S_arg < mrc)
|
|
{
|
|
int first = S_arg * 2;
|
|
int last = first + 1;
|
|
FWRITE(ptr, 1, offsets[first], stdout);
|
|
fprintf(stdout, "X");
|
|
FWRITE(ptr + offsets[last], 1, linelength - offsets[last], stdout);
|
|
}
|
|
else
|
|
#endif
|
|
|
|
/* We have to split the line(s) up if colouring, and search for further
|
|
matches, but not of course if the line is a non-match. */
|
|
|
|
if (do_colour && !invert)
|
|
{
|
|
int plength;
|
|
FWRITE(ptr, 1, offsets[0], stdout);
|
|
fprintf(stdout, "%c[%sm", 0x1b, colour_string);
|
|
FWRITE(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
|
|
fprintf(stdout, "%c[00m", 0x1b);
|
|
for (;;)
|
|
{
|
|
startoffset = offsets[1];
|
|
if (startoffset >= (int)linelength + endlinelength ||
|
|
!match_patterns(matchptr, length, startoffset, offsets, &mrc))
|
|
break;
|
|
FWRITE(matchptr + startoffset, 1, offsets[0] - startoffset, stdout);
|
|
fprintf(stdout, "%c[%sm", 0x1b, colour_string);
|
|
FWRITE(matchptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
|
|
fprintf(stdout, "%c[00m", 0x1b);
|
|
}
|
|
|
|
/* In multiline mode, we may have already printed the complete line
|
|
and its line-ending characters (if they matched the pattern), so there
|
|
may be no more to print. */
|
|
|
|
plength = (int)((linelength + endlinelength) - startoffset);
|
|
if (plength > 0) FWRITE(ptr + startoffset, 1, plength, stdout);
|
|
}
|
|
|
|
/* Not colouring; no need to search for further matches */
|
|
|
|
else FWRITE(ptr, 1, linelength + endlinelength, stdout);
|
|
}
|
|
|
|
/* End of doing what has to be done for a match. If --line-buffered was
|
|
given, flush the output. */
|
|
|
|
if (line_buffered) fflush(stdout);
|
|
rc = 0; /* Had some success */
|
|
|
|
/* Remember where the last match happened for after_context. We remember
|
|
where we are about to restart, and that line's number. */
|
|
|
|
lastmatchrestart = ptr + linelength + endlinelength;
|
|
lastmatchnumber = linenumber + 1;
|
|
}
|
|
|
|
/* For a match in multiline inverted mode (which of course did not cause
|
|
anything to be printed), we have to move on to the end of the match before
|
|
proceeding. */
|
|
|
|
if (multiline && invert && match)
|
|
{
|
|
int ellength;
|
|
char *endmatch = ptr + offsets[1];
|
|
t = ptr;
|
|
while (t < endmatch)
|
|
{
|
|
t = end_of_line(t, endptr, &ellength);
|
|
if (t <= endmatch) linenumber++; else break;
|
|
}
|
|
endmatch = end_of_line(endmatch, endptr, &ellength);
|
|
linelength = endmatch - ptr - ellength;
|
|
}
|
|
|
|
/* Advance to after the newline and increment the line number. The file
|
|
offset to the current line is maintained in filepos. */
|
|
|
|
ptr += linelength + endlinelength;
|
|
filepos += (int)(linelength + endlinelength);
|
|
linenumber++;
|
|
|
|
/* If input is line buffered, and the buffer is not yet full, read another
|
|
line and add it into the buffer. */
|
|
|
|
if (input_line_buffered && bufflength < (size_t)bufsize)
|
|
{
|
|
int add = read_one_line(ptr, bufsize - (int)(ptr - main_buffer), in);
|
|
bufflength += add;
|
|
endptr += add;
|
|
}
|
|
|
|
/* If we haven't yet reached the end of the file (the buffer is full), and
|
|
the current point is in the top 1/3 of the buffer, slide the buffer down by
|
|
1/3 and refill it. Before we do this, if some unprinted "after" lines are
|
|
about to be lost, print them. */
|
|
|
|
if (bufflength >= (size_t)bufsize && ptr > main_buffer + 2*bufthird)
|
|
{
|
|
if (after_context > 0 &&
|
|
lastmatchnumber > 0 &&
|
|
lastmatchrestart < main_buffer + bufthird)
|
|
{
|
|
do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);
|
|
lastmatchnumber = 0;
|
|
}
|
|
|
|
/* Now do the shuffle */
|
|
|
|
memmove(main_buffer, main_buffer + bufthird, 2*bufthird);
|
|
ptr -= bufthird;
|
|
|
|
#ifdef SUPPORT_LIBZ
|
|
if (frtype == FR_LIBZ)
|
|
bufflength = 2*bufthird +
|
|
gzread (ingz, main_buffer + 2*bufthird, bufthird);
|
|
else
|
|
#endif
|
|
|
|
#ifdef SUPPORT_LIBBZ2
|
|
if (frtype == FR_LIBBZ2)
|
|
bufflength = 2*bufthird +
|
|
BZ2_bzread(inbz2, main_buffer + 2*bufthird, bufthird);
|
|
else
|
|
#endif
|
|
|
|
bufflength = 2*bufthird +
|
|
(input_line_buffered?
|
|
read_one_line(main_buffer + 2*bufthird, bufthird, in) :
|
|
fread(main_buffer + 2*bufthird, 1, bufthird, in));
|
|
endptr = main_buffer + bufflength;
|
|
|
|
/* Adjust any last match point */
|
|
|
|
if (lastmatchnumber > 0) lastmatchrestart -= bufthird;
|
|
}
|
|
} /* Loop through the whole file */
|
|
|
|
/* End of file; print final "after" lines if wanted; do_after_lines sets
|
|
hyphenpending if it prints something. */
|
|
|
|
if (!show_only_matching && !count_only)
|
|
{
|
|
do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);
|
|
hyphenpending |= endhyphenpending;
|
|
}
|
|
|
|
/* Print the file name if we are looking for those without matches and there
|
|
were none. If we found a match, we won't have got this far. */
|
|
|
|
if (filenames == FN_NOMATCH_ONLY)
|
|
{
|
|
fprintf(stdout, "%s\n", printname);
|
|
return 0;
|
|
}
|
|
|
|
/* Print the match count if wanted */
|
|
|
|
if (count_only)
|
|
{
|
|
if (count > 0 || !omit_zero_count)
|
|
{
|
|
if (printname != NULL && filenames != FN_NONE)
|
|
fprintf(stdout, "%s:", printname);
|
|
fprintf(stdout, "%d\n", count);
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Grep a file or recurse into a directory *
|
|
*************************************************/
|
|
|
|
/* Given a path name, if it's a directory, scan all the files if we are
|
|
recursing; if it's a file, grep it.
|
|
|
|
Arguments:
|
|
pathname the path to investigate
|
|
dir_recurse TRUE if recursing is wanted (-r or -drecurse)
|
|
only_one_at_top TRUE if the path is the only one at toplevel
|
|
|
|
Returns: -1 the file/directory was skipped
|
|
0 if there was at least one match
|
|
1 if there were no matches
|
|
2 there was some kind of error
|
|
|
|
However, file opening failures are suppressed if "silent" is set.
|
|
*/
|
|
|
|
static int
|
|
grep_or_recurse(char *pathname, BOOL dir_recurse, BOOL only_one_at_top)
|
|
{
|
|
int rc = 1;
|
|
int frtype;
|
|
void *handle;
|
|
char *lastcomp;
|
|
FILE *in = NULL; /* Ensure initialized */
|
|
|
|
#ifdef SUPPORT_LIBZ
|
|
gzFile ingz = NULL;
|
|
#endif
|
|
|
|
#ifdef SUPPORT_LIBBZ2
|
|
BZFILE *inbz2 = NULL;
|
|
#endif
|
|
|
|
#if defined SUPPORT_LIBZ || defined SUPPORT_LIBBZ2
|
|
int pathlen;
|
|
#endif
|
|
|
|
/* If the file name is "-" we scan stdin */
|
|
|
|
if (strcmp(pathname, "-") == 0)
|
|
{
|
|
return pcregrep(stdin, FR_PLAIN, stdin_name,
|
|
(filenames > FN_DEFAULT || (filenames == FN_DEFAULT && !only_one_at_top))?
|
|
stdin_name : NULL);
|
|
}
|
|
|
|
/* Inclusion and exclusion: --include-dir and --exclude-dir apply only to
|
|
directories, whereas --include and --exclude apply to everything else. The test
|
|
is against the final component of the path. */
|
|
|
|
lastcomp = strrchr(pathname, FILESEP);
|
|
lastcomp = (lastcomp == NULL)? pathname : lastcomp + 1;
|
|
|
|
/* If the file is a directory, skip if not recursing or if explicitly excluded.
|
|
Otherwise, scan the directory and recurse for each path within it. The scanning
|
|
code is localized so it can be made system-specific. */
|
|
|
|
if (isdirectory(pathname))
|
|
{
|
|
if (dee_action == dee_SKIP ||
|
|
!test_incexc(lastcomp, include_dir_patterns, exclude_dir_patterns))
|
|
return -1;
|
|
|
|
if (dee_action == dee_RECURSE)
|
|
{
|
|
char buffer[1024];
|
|
char *nextfile;
|
|
directory_type *dir = opendirectory(pathname);
|
|
|
|
if (dir == NULL)
|
|
{
|
|
if (!silent)
|
|
fprintf(stderr, "pcregrep: Failed to open directory %s: %s\n", pathname,
|
|
strerror(errno));
|
|
return 2;
|
|
}
|
|
|
|
while ((nextfile = readdirectory(dir)) != NULL)
|
|
{
|
|
int frc;
|
|
sprintf(buffer, "%.512s%c%.128s", pathname, FILESEP, nextfile);
|
|
frc = grep_or_recurse(buffer, dir_recurse, FALSE);
|
|
if (frc > 1) rc = frc;
|
|
else if (frc == 0 && rc == 1) rc = 0;
|
|
}
|
|
|
|
closedirectory(dir);
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
/* If the file is not a directory and not a regular file, skip it if that's
|
|
been requested. Otherwise, check for explicit include/exclude. */
|
|
|
|
else if ((!isregfile(pathname) && DEE_action == DEE_SKIP) ||
|
|
!test_incexc(lastcomp, include_patterns, exclude_patterns))
|
|
return -1;
|
|
|
|
/* Control reaches here if we have a regular file, or if we have a directory
|
|
and recursion or skipping was not requested, or if we have anything else and
|
|
skipping was not requested. The scan proceeds. If this is the first and only
|
|
argument at top level, we don't show the file name, unless we are only showing
|
|
the file name, or the filename was forced (-H). */
|
|
|
|
#if defined SUPPORT_LIBZ || defined SUPPORT_LIBBZ2
|
|
pathlen = (int)(strlen(pathname));
|
|
#endif
|
|
|
|
/* Open using zlib if it is supported and the file name ends with .gz. */
|
|
|
|
#ifdef SUPPORT_LIBZ
|
|
if (pathlen > 3 && strcmp(pathname + pathlen - 3, ".gz") == 0)
|
|
{
|
|
ingz = gzopen(pathname, "rb");
|
|
if (ingz == NULL)
|
|
{
|
|
if (!silent)
|
|
fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname,
|
|
strerror(errno));
|
|
return 2;
|
|
}
|
|
handle = (void *)ingz;
|
|
frtype = FR_LIBZ;
|
|
}
|
|
else
|
|
#endif
|
|
|
|
/* Otherwise open with bz2lib if it is supported and the name ends with .bz2. */
|
|
|
|
#ifdef SUPPORT_LIBBZ2
|
|
if (pathlen > 4 && strcmp(pathname + pathlen - 4, ".bz2") == 0)
|
|
{
|
|
inbz2 = BZ2_bzopen(pathname, "rb");
|
|
handle = (void *)inbz2;
|
|
frtype = FR_LIBBZ2;
|
|
}
|
|
else
|
|
#endif
|
|
|
|
/* Otherwise use plain fopen(). The label is so that we can come back here if
|
|
an attempt to read a .bz2 file indicates that it really is a plain file. */
|
|
|
|
#ifdef SUPPORT_LIBBZ2
|
|
PLAIN_FILE:
|
|
#endif
|
|
{
|
|
in = fopen(pathname, "rb");
|
|
handle = (void *)in;
|
|
frtype = FR_PLAIN;
|
|
}
|
|
|
|
/* All the opening methods return errno when they fail. */
|
|
|
|
if (handle == NULL)
|
|
{
|
|
if (!silent)
|
|
fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname,
|
|
strerror(errno));
|
|
return 2;
|
|
}
|
|
|
|
/* Now grep the file */
|
|
|
|
rc = pcregrep(handle, frtype, pathname, (filenames > FN_DEFAULT ||
|
|
(filenames == FN_DEFAULT && !only_one_at_top))? pathname : NULL);
|
|
|
|
/* Close in an appropriate manner. */
|
|
|
|
#ifdef SUPPORT_LIBZ
|
|
if (frtype == FR_LIBZ)
|
|
gzclose(ingz);
|
|
else
|
|
#endif
|
|
|
|
/* If it is a .bz2 file and the result is 3, it means that the first attempt to
|
|
read failed. If the error indicates that the file isn't in fact bzipped, try
|
|
again as a normal file. */
|
|
|
|
#ifdef SUPPORT_LIBBZ2
|
|
if (frtype == FR_LIBBZ2)
|
|
{
|
|
if (rc == 3)
|
|
{
|
|
int errnum;
|
|
const char *err = BZ2_bzerror(inbz2, &errnum);
|
|
if (errnum == BZ_DATA_ERROR_MAGIC)
|
|
{
|
|
BZ2_bzclose(inbz2);
|
|
goto PLAIN_FILE;
|
|
}
|
|
else if (!silent)
|
|
fprintf(stderr, "pcregrep: Failed to read %s using bzlib: %s\n",
|
|
pathname, err);
|
|
rc = 2; /* The normal "something went wrong" code */
|
|
}
|
|
BZ2_bzclose(inbz2);
|
|
}
|
|
else
|
|
#endif
|
|
|
|
/* Normal file close */
|
|
|
|
fclose(in);
|
|
|
|
/* Pass back the yield from pcregrep(). */
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Handle a single-letter, no data option *
|
|
*************************************************/
|
|
|
|
static int
|
|
handle_option(int letter, int options)
|
|
{
|
|
switch(letter)
|
|
{
|
|
case N_FOFFSETS: file_offsets = TRUE; break;
|
|
case N_HELP: help(); pcregrep_exit(0);
|
|
case N_LBUFFER: line_buffered = TRUE; break;
|
|
case N_LOFFSETS: line_offsets = number = TRUE; break;
|
|
case N_NOJIT: study_options &= ~PCRE_STUDY_JIT_COMPILE; break;
|
|
case 'a': binary_files = BIN_TEXT; break;
|
|
case 'c': count_only = TRUE; break;
|
|
case 'F': process_options |= PO_FIXED_STRINGS; break;
|
|
case 'H': filenames = FN_FORCE; break;
|
|
case 'I': binary_files = BIN_NOMATCH; break;
|
|
case 'h': filenames = FN_NONE; break;
|
|
case 'i': options |= PCRE_CASELESS; break;
|
|
case 'l': omit_zero_count = TRUE; filenames = FN_MATCH_ONLY; break;
|
|
case 'L': filenames = FN_NOMATCH_ONLY; break;
|
|
case 'M': multiline = TRUE; options |= PCRE_MULTILINE|PCRE_FIRSTLINE; break;
|
|
case 'n': number = TRUE; break;
|
|
|
|
case 'o':
|
|
only_matching_last = add_number(0, only_matching_last);
|
|
if (only_matching == NULL) only_matching = only_matching_last;
|
|
break;
|
|
|
|
case 'q': quiet = TRUE; break;
|
|
case 'r': dee_action = dee_RECURSE; break;
|
|
case 's': silent = TRUE; break;
|
|
case 'u': options |= PCRE_UTF8; utf8 = TRUE; break;
|
|
case 'v': invert = TRUE; break;
|
|
case 'w': process_options |= PO_WORD_MATCH; break;
|
|
case 'x': process_options |= PO_LINE_MATCH; break;
|
|
|
|
case 'V':
|
|
fprintf(stdout, "pcregrep version %s\n", pcre_version());
|
|
pcregrep_exit(0);
|
|
break;
|
|
|
|
default:
|
|
fprintf(stderr, "pcregrep: Unknown option -%c\n", letter);
|
|
pcregrep_exit(usage(2));
|
|
}
|
|
|
|
return options;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Construct printed ordinal *
|
|
*************************************************/
|
|
|
|
/* This turns a number into "1st", "3rd", etc. */
|
|
|
|
static char *
|
|
ordin(int n)
|
|
{
|
|
static char buffer[8];
|
|
char *p = buffer;
|
|
sprintf(p, "%d", n);
|
|
while (*p != 0) p++;
|
|
switch (n%10)
|
|
{
|
|
case 1: strcpy(p, "st"); break;
|
|
case 2: strcpy(p, "nd"); break;
|
|
case 3: strcpy(p, "rd"); break;
|
|
default: strcpy(p, "th"); break;
|
|
}
|
|
return buffer;
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Compile a single pattern *
|
|
*************************************************/
|
|
|
|
/* Do nothing if the pattern has already been compiled. This is the case for
|
|
include/exclude patterns read from a file.
|
|
|
|
When the -F option has been used, each "pattern" may be a list of strings,
|
|
separated by line breaks. They will be matched literally. We split such a
|
|
string and compile the first substring, inserting an additional block into the
|
|
pattern chain.
|
|
|
|
Arguments:
|
|
p points to the pattern block
|
|
options the PCRE options
|
|
popts the processing options
|
|
fromfile TRUE if the pattern was read from a file
|
|
fromtext file name or identifying text (e.g. "include")
|
|
count 0 if this is the only command line pattern, or
|
|
number of the command line pattern, or
|
|
linenumber for a pattern from a file
|
|
|
|
Returns: TRUE on success, FALSE after an error
|
|
*/
|
|
|
|
static BOOL
|
|
compile_pattern(patstr *p, int options, int popts, int fromfile,
|
|
const char *fromtext, int count)
|
|
{
|
|
char buffer[PATBUFSIZE];
|
|
const char *error;
|
|
char *ps = p->string;
|
|
int patlen = strlen(ps);
|
|
int errptr;
|
|
|
|
if (p->compiled != NULL) return TRUE;
|
|
|
|
if ((popts & PO_FIXED_STRINGS) != 0)
|
|
{
|
|
int ellength;
|
|
char *eop = ps + patlen;
|
|
char *pe = end_of_line(ps, eop, &ellength);
|
|
|
|
if (ellength != 0)
|
|
{
|
|
if (add_pattern(pe, p) == NULL) return FALSE;
|
|
patlen = (int)(pe - ps - ellength);
|
|
}
|
|
}
|
|
|
|
sprintf(buffer, "%s%.*s%s", prefix[popts], patlen, ps, suffix[popts]);
|
|
p->compiled = pcre_compile(buffer, options, &error, &errptr, pcretables);
|
|
if (p->compiled != NULL) return TRUE;
|
|
|
|
/* Handle compile errors */
|
|
|
|
errptr -= (int)strlen(prefix[popts]);
|
|
if (errptr > patlen) errptr = patlen;
|
|
|
|
if (fromfile)
|
|
{
|
|
fprintf(stderr, "pcregrep: Error in regex in line %d of %s "
|
|
"at offset %d: %s\n", count, fromtext, errptr, error);
|
|
}
|
|
else
|
|
{
|
|
if (count == 0)
|
|
fprintf(stderr, "pcregrep: Error in %s regex at offset %d: %s\n",
|
|
fromtext, errptr, error);
|
|
else
|
|
fprintf(stderr, "pcregrep: Error in %s %s regex at offset %d: %s\n",
|
|
ordin(count), fromtext, errptr, error);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Read and compile a file of patterns *
|
|
*************************************************/
|
|
|
|
/* This is used for --filelist, --include-from, and --exclude-from.
|
|
|
|
Arguments:
|
|
name the name of the file; "-" is stdin
|
|
patptr pointer to the pattern chain anchor
|
|
patlastptr pointer to the last pattern pointer
|
|
popts the process options to pass to pattern_compile()
|
|
|
|
Returns: TRUE if all went well
|
|
*/
|
|
|
|
static BOOL
|
|
read_pattern_file(char *name, patstr **patptr, patstr **patlastptr, int popts)
|
|
{
|
|
int linenumber = 0;
|
|
FILE *f;
|
|
char *filename;
|
|
char buffer[PATBUFSIZE];
|
|
|
|
if (strcmp(name, "-") == 0)
|
|
{
|
|
f = stdin;
|
|
filename = stdin_name;
|
|
}
|
|
else
|
|
{
|
|
f = fopen(name, "r");
|
|
if (f == NULL)
|
|
{
|
|
fprintf(stderr, "pcregrep: Failed to open %s: %s\n", name, strerror(errno));
|
|
return FALSE;
|
|
}
|
|
filename = name;
|
|
}
|
|
|
|
while (fgets(buffer, PATBUFSIZE, f) != NULL)
|
|
{
|
|
char *s = buffer + (int)strlen(buffer);
|
|
while (s > buffer && isspace((unsigned char)(s[-1]))) s--;
|
|
*s = 0;
|
|
linenumber++;
|
|
if (buffer[0] == 0) continue; /* Skip blank lines */
|
|
|
|
/* Note: this call to add_pattern() puts a pointer to the local variable
|
|
"buffer" into the pattern chain. However, that pointer is used only when
|
|
compiling the pattern, which happens immediately below, so we flatten it
|
|
afterwards, as a precaution against any later code trying to use it. */
|
|
|
|
*patlastptr = add_pattern(buffer, *patlastptr);
|
|
if (*patlastptr == NULL) return FALSE;
|
|
if (*patptr == NULL) *patptr = *patlastptr;
|
|
|
|
/* This loop is needed because compiling a "pattern" when -F is set may add
|
|
on additional literal patterns if the original contains a newline. In the
|
|
common case, it never will, because fgets() stops at a newline. However,
|
|
the -N option can be used to give pcregrep a different newline setting. */
|
|
|
|
for(;;)
|
|
{
|
|
if (!compile_pattern(*patlastptr, pcre_options, popts, TRUE, filename,
|
|
linenumber))
|
|
return FALSE;
|
|
(*patlastptr)->string = NULL; /* Insurance */
|
|
if ((*patlastptr)->next == NULL) break;
|
|
*patlastptr = (*patlastptr)->next;
|
|
}
|
|
}
|
|
|
|
if (f != stdin) fclose(f);
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
|
|
/*************************************************
|
|
* Main program *
|
|
*************************************************/
|
|
|
|
/* Returns 0 if something matched, 1 if nothing matched, 2 after an error. */
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
int i, j;
|
|
int rc = 1;
|
|
BOOL only_one_at_top;
|
|
patstr *cp;
|
|
fnstr *fn;
|
|
const char *locale_from = "--locale";
|
|
const char *error;
|
|
|
|
#ifdef SUPPORT_PCREGREP_JIT
|
|
pcre_jit_stack *jit_stack = NULL;
|
|
#endif
|
|
|
|
/* Set the default line ending value from the default in the PCRE library;
|
|
"lf", "cr", "crlf", and "any" are supported. Anything else is treated as "lf".
|
|
Note that the return values from pcre_config(), though derived from the ASCII
|
|
codes, are the same in EBCDIC environments, so we must use the actual values
|
|
rather than escapes such as as '\r'. */
|
|
|
|
(void)pcre_config(PCRE_CONFIG_NEWLINE, &i);
|
|
switch(i)
|
|
{
|
|
default: newline = (char *)"lf"; break;
|
|
case 13: newline = (char *)"cr"; break;
|
|
case (13 << 8) | 10: newline = (char *)"crlf"; break;
|
|
case -1: newline = (char *)"any"; break;
|
|
case -2: newline = (char *)"anycrlf"; break;
|
|
}
|
|
|
|
/* Process the options */
|
|
|
|
for (i = 1; i < argc; i++)
|
|
{
|
|
option_item *op = NULL;
|
|
char *option_data = (char *)""; /* default to keep compiler happy */
|
|
BOOL longop;
|
|
BOOL longopwasequals = FALSE;
|
|
|
|
if (argv[i][0] != '-') break;
|
|
|
|
/* If we hit an argument that is just "-", it may be a reference to STDIN,
|
|
but only if we have previously had -e or -f to define the patterns. */
|
|
|
|
if (argv[i][1] == 0)
|
|
{
|
|
if (pattern_files != NULL || patterns != NULL) break;
|
|
else pcregrep_exit(usage(2));
|
|
}
|
|
|
|
/* Handle a long name option, or -- to terminate the options */
|
|
|
|
if (argv[i][1] == '-')
|
|
{
|
|
char *arg = argv[i] + 2;
|
|
char *argequals = strchr(arg, '=');
|
|
|
|
if (*arg == 0) /* -- terminates options */
|
|
{
|
|
i++;
|
|
break; /* out of the options-handling loop */
|
|
}
|
|
|
|
longop = TRUE;
|
|
|
|
/* Some long options have data that follows after =, for example file=name.
|
|
Some options have variations in the long name spelling: specifically, we
|
|
allow "regexp" because GNU grep allows it, though I personally go along
|
|
with Jeffrey Friedl and Larry Wall in preferring "regex" without the "p".
|
|
These options are entered in the table as "regex(p)". Options can be in
|
|
both these categories. */
|
|
|
|
for (op = optionlist; op->one_char != 0; op++)
|
|
{
|
|
char *opbra = strchr(op->long_name, '(');
|
|
char *equals = strchr(op->long_name, '=');
|
|
|
|
/* Handle options with only one spelling of the name */
|
|
|
|
if (opbra == NULL) /* Does not contain '(' */
|
|
{
|
|
if (equals == NULL) /* Not thing=data case */
|
|
{
|
|
if (strcmp(arg, op->long_name) == 0) break;
|
|
}
|
|
else /* Special case xxx=data */
|
|
{
|
|
int oplen = (int)(equals - op->long_name);
|
|
int arglen = (argequals == NULL)?
|
|
(int)strlen(arg) : (int)(argequals - arg);
|
|
if (oplen == arglen && strncmp(arg, op->long_name, oplen) == 0)
|
|
{
|
|
option_data = arg + arglen;
|
|
if (*option_data == '=')
|
|
{
|
|
option_data++;
|
|
longopwasequals = TRUE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Handle options with an alternate spelling of the name */
|
|
|
|
else
|
|
{
|
|
char buff1[24];
|
|
char buff2[24];
|
|
|
|
int baselen = (int)(opbra - op->long_name);
|
|
int fulllen = (int)(strchr(op->long_name, ')') - op->long_name + 1);
|
|
int arglen = (argequals == NULL || equals == NULL)?
|
|
(int)strlen(arg) : (int)(argequals - arg);
|
|
|
|
sprintf(buff1, "%.*s", baselen, op->long_name);
|
|
sprintf(buff2, "%s%.*s", buff1, fulllen - baselen - 2, opbra + 1);
|
|
|
|
if (strncmp(arg, buff1, arglen) == 0 ||
|
|
strncmp(arg, buff2, arglen) == 0)
|
|
{
|
|
if (equals != NULL && argequals != NULL)
|
|
{
|
|
option_data = argequals;
|
|
if (*option_data == '=')
|
|
{
|
|
option_data++;
|
|
longopwasequals = TRUE;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (op->one_char == 0)
|
|
{
|
|
fprintf(stderr, "pcregrep: Unknown option %s\n", argv[i]);
|
|
pcregrep_exit(usage(2));
|
|
}
|
|
}
|
|
|
|
/* Jeffrey Friedl's debugging harness uses these additional options which
|
|
are not in the right form for putting in the option table because they use
|
|
only one hyphen, yet are more than one character long. By putting them
|
|
separately here, they will not get displayed as part of the help() output,
|
|
but I don't think Jeffrey will care about that. */
|
|
|
|
#ifdef JFRIEDL_DEBUG
|
|
else if (strcmp(argv[i], "-pre") == 0) {
|
|
jfriedl_prefix = argv[++i];
|
|
continue;
|
|
} else if (strcmp(argv[i], "-post") == 0) {
|
|
jfriedl_postfix = argv[++i];
|
|
continue;
|
|
} else if (strcmp(argv[i], "-XT") == 0) {
|
|
sscanf(argv[++i], "%d", &jfriedl_XT);
|
|
continue;
|
|
} else if (strcmp(argv[i], "-XR") == 0) {
|
|
sscanf(argv[++i], "%d", &jfriedl_XR);
|
|
continue;
|
|
}
|
|
#endif
|
|
|
|
|
|
/* One-char options; many that have no data may be in a single argument; we
|
|
continue till we hit the last one or one that needs data. */
|
|
|
|
else
|
|
{
|
|
char *s = argv[i] + 1;
|
|
longop = FALSE;
|
|
|
|
while (*s != 0)
|
|
{
|
|
for (op = optionlist; op->one_char != 0; op++)
|
|
{
|
|
if (*s == op->one_char) break;
|
|
}
|
|
if (op->one_char == 0)
|
|
{
|
|
fprintf(stderr, "pcregrep: Unknown option letter '%c' in \"%s\"\n",
|
|
*s, argv[i]);
|
|
pcregrep_exit(usage(2));
|
|
}
|
|
|
|
option_data = s+1;
|
|
|
|
/* Break out if this is the last character in the string; it's handled
|
|
below like a single multi-char option. */
|
|
|
|
if (*option_data == 0) break;
|
|
|
|
/* Check for a single-character option that has data: OP_OP_NUMBER(S)
|
|
are used for ones that either have a numerical number or defaults, i.e.
|
|
the data is optional. If a digit follows, there is data; if not, carry on
|
|
with other single-character options in the same string. */
|
|
|
|
if (op->type == OP_OP_NUMBER || op->type == OP_OP_NUMBERS)
|
|
{
|
|
if (isdigit((unsigned char)s[1])) break;
|
|
}
|
|
else /* Check for an option with data */
|
|
{
|
|
if (op->type != OP_NODATA) break;
|
|
}
|
|
|
|
/* Handle a single-character option with no data, then loop for the
|
|
next character in the string. */
|
|
|
|
pcre_options = handle_option(*s++, pcre_options);
|
|
}
|
|
}
|
|
|
|
/* At this point we should have op pointing to a matched option. If the type
|
|
is NO_DATA, it means that there is no data, and the option might set
|
|
something in the PCRE options. */
|
|
|
|
if (op->type == OP_NODATA)
|
|
{
|
|
pcre_options = handle_option(op->one_char, pcre_options);
|
|
continue;
|
|
}
|
|
|
|
/* If the option type is OP_OP_STRING or OP_OP_NUMBER(S), it's an option that
|
|
either has a value or defaults to something. It cannot have data in a
|
|
separate item. At the moment, the only such options are "colo(u)r",
|
|
"only-matching", and Jeffrey Friedl's special -S debugging option. */
|
|
|
|
if (*option_data == 0 &&
|
|
(op->type == OP_OP_STRING || op->type == OP_OP_NUMBER ||
|
|
op->type == OP_OP_NUMBERS))
|
|
{
|
|
switch (op->one_char)
|
|
{
|
|
case N_COLOUR:
|
|
colour_option = (char *)"auto";
|
|
break;
|
|
|
|
case 'o':
|
|
only_matching_last = add_number(0, only_matching_last);
|
|
if (only_matching == NULL) only_matching = only_matching_last;
|
|
break;
|
|
|
|
#ifdef JFRIEDL_DEBUG
|
|
case 'S':
|
|
S_arg = 0;
|
|
break;
|
|
#endif
|
|
}
|
|
continue;
|
|
}
|
|
|
|
/* Otherwise, find the data string for the option. */
|
|
|
|
if (*option_data == 0)
|
|
{
|
|
if (i >= argc - 1 || longopwasequals)
|
|
{
|
|
fprintf(stderr, "pcregrep: Data missing after %s\n", argv[i]);
|
|
pcregrep_exit(usage(2));
|
|
}
|
|
option_data = argv[++i];
|
|
}
|
|
|
|
/* If the option type is OP_OP_NUMBERS, the value is a number that is to be
|
|
added to a chain of numbers. */
|
|
|
|
if (op->type == OP_OP_NUMBERS)
|
|
{
|
|
unsigned long int n = decode_number(option_data, op, longop);
|
|
omdatastr *omd = (omdatastr *)op->dataptr;
|
|
*(omd->lastptr) = add_number((int)n, *(omd->lastptr));
|
|
if (*(omd->anchor) == NULL) *(omd->anchor) = *(omd->lastptr);
|
|
}
|
|
|
|
/* If the option type is OP_PATLIST, it's the -e option, or one of the
|
|
include/exclude options, which can be called multiple times to create lists
|
|
of patterns. */
|
|
|
|
else if (op->type == OP_PATLIST)
|
|
{
|
|
patdatastr *pd = (patdatastr *)op->dataptr;
|
|
*(pd->lastptr) = add_pattern(option_data, *(pd->lastptr));
|
|
if (*(pd->lastptr) == NULL) goto EXIT2;
|
|
if (*(pd->anchor) == NULL) *(pd->anchor) = *(pd->lastptr);
|
|
}
|
|
|
|
/* If the option type is OP_FILELIST, it's one of the options that names a
|
|
file. */
|
|
|
|
else if (op->type == OP_FILELIST)
|
|
{
|
|
fndatastr *fd = (fndatastr *)op->dataptr;
|
|
fn = (fnstr *)malloc(sizeof(fnstr));
|
|
if (fn == NULL)
|
|
{
|
|
fprintf(stderr, "pcregrep: malloc failed\n");
|
|
goto EXIT2;
|
|
}
|
|
fn->next = NULL;
|
|
fn->name = option_data;
|
|
if (*(fd->anchor) == NULL)
|
|
*(fd->anchor) = fn;
|
|
else
|
|
(*(fd->lastptr))->next = fn;
|
|
*(fd->lastptr) = fn;
|
|
}
|
|
|
|
/* Handle OP_BINARY_FILES */
|
|
|
|
else if (op->type == OP_BINFILES)
|
|
{
|
|
if (strcmp(option_data, "binary") == 0)
|
|
binary_files = BIN_BINARY;
|
|
else if (strcmp(option_data, "without-match") == 0)
|
|
binary_files = BIN_NOMATCH;
|
|
else if (strcmp(option_data, "text") == 0)
|
|
binary_files = BIN_TEXT;
|
|
else
|
|
{
|
|
fprintf(stderr, "pcregrep: unknown value \"%s\" for binary-files\n",
|
|
option_data);
|
|
pcregrep_exit(usage(2));
|
|
}
|
|
}
|
|
|
|
/* Otherwise, deal with a single string or numeric data value. */
|
|
|
|
else if (op->type != OP_NUMBER && op->type != OP_LONGNUMBER &&
|
|
op->type != OP_OP_NUMBER)
|
|
{
|
|
*((char **)op->dataptr) = option_data;
|
|
}
|
|
else
|
|
{
|
|
unsigned long int n = decode_number(option_data, op, longop);
|
|
if (op->type == OP_LONGNUMBER) *((unsigned long int *)op->dataptr) = n;
|
|
else *((int *)op->dataptr) = n;
|
|
}
|
|
}
|
|
|
|
/* Options have been decoded. If -C was used, its value is used as a default
|
|
for -A and -B. */
|
|
|
|
if (both_context > 0)
|
|
{
|
|
if (after_context == 0) after_context = both_context;
|
|
if (before_context == 0) before_context = both_context;
|
|
}
|
|
|
|
/* Only one of --only-matching, --file-offsets, or --line-offsets is permitted.
|
|
However, all three set show_only_matching because they display, each in their
|
|
own way, only the data that has matched. */
|
|
|
|
if ((only_matching != NULL && (file_offsets || line_offsets)) ||
|
|
(file_offsets && line_offsets))
|
|
{
|
|
fprintf(stderr, "pcregrep: Cannot mix --only-matching, --file-offsets "
|
|
"and/or --line-offsets\n");
|
|
pcregrep_exit(usage(2));
|
|
}
|
|
|
|
if (only_matching != NULL || file_offsets || line_offsets)
|
|
show_only_matching = TRUE;
|
|
|
|
/* If a locale has not been provided as an option, see if the LC_CTYPE or
|
|
LC_ALL environment variable is set, and if so, use it. */
|
|
|
|
if (locale == NULL)
|
|
{
|
|
locale = getenv("LC_ALL");
|
|
locale_from = "LCC_ALL";
|
|
}
|
|
|
|
if (locale == NULL)
|
|
{
|
|
locale = getenv("LC_CTYPE");
|
|
locale_from = "LC_CTYPE";
|
|
}
|
|
|
|
/* If a locale has been provided, set it, and generate the tables the PCRE
|
|
needs. Otherwise, pcretables==NULL, which causes the use of default tables. */
|
|
|
|
if (locale != NULL)
|
|
{
|
|
if (setlocale(LC_CTYPE, locale) == NULL)
|
|
{
|
|
fprintf(stderr, "pcregrep: Failed to set locale %s (obtained from %s)\n",
|
|
locale, locale_from);
|
|
return 2;
|
|
}
|
|
pcretables = pcre_maketables();
|
|
}
|
|
|
|
/* Sort out colouring */
|
|
|
|
if (colour_option != NULL && strcmp(colour_option, "never") != 0)
|
|
{
|
|
if (strcmp(colour_option, "always") == 0) do_colour = TRUE;
|
|
else if (strcmp(colour_option, "auto") == 0) do_colour = is_stdout_tty();
|
|
else
|
|
{
|
|
fprintf(stderr, "pcregrep: Unknown colour setting \"%s\"\n",
|
|
colour_option);
|
|
return 2;
|
|
}
|
|
if (do_colour)
|
|
{
|
|
char *cs = getenv("PCREGREP_COLOUR");
|
|
if (cs == NULL) cs = getenv("PCREGREP_COLOR");
|
|
if (cs != NULL) colour_string = cs;
|
|
}
|
|
}
|
|
|
|
/* Interpret the newline type; the default settings are Unix-like. */
|
|
|
|
if (strcmp(newline, "cr") == 0 || strcmp(newline, "CR") == 0)
|
|
{
|
|
pcre_options |= PCRE_NEWLINE_CR;
|
|
endlinetype = EL_CR;
|
|
}
|
|
else if (strcmp(newline, "lf") == 0 || strcmp(newline, "LF") == 0)
|
|
{
|
|
pcre_options |= PCRE_NEWLINE_LF;
|
|
endlinetype = EL_LF;
|
|
}
|
|
else if (strcmp(newline, "crlf") == 0 || strcmp(newline, "CRLF") == 0)
|
|
{
|
|
pcre_options |= PCRE_NEWLINE_CRLF;
|
|
endlinetype = EL_CRLF;
|
|
}
|
|
else if (strcmp(newline, "any") == 0 || strcmp(newline, "ANY") == 0)
|
|
{
|
|
pcre_options |= PCRE_NEWLINE_ANY;
|
|
endlinetype = EL_ANY;
|
|
}
|
|
else if (strcmp(newline, "anycrlf") == 0 || strcmp(newline, "ANYCRLF") == 0)
|
|
{
|
|
pcre_options |= PCRE_NEWLINE_ANYCRLF;
|
|
endlinetype = EL_ANYCRLF;
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr, "pcregrep: Invalid newline specifier \"%s\"\n", newline);
|
|
return 2;
|
|
}
|
|
|
|
/* Interpret the text values for -d and -D */
|
|
|
|
if (dee_option != NULL)
|
|
{
|
|
if (strcmp(dee_option, "read") == 0) dee_action = dee_READ;
|
|
else if (strcmp(dee_option, "recurse") == 0) dee_action = dee_RECURSE;
|
|
else if (strcmp(dee_option, "skip") == 0) dee_action = dee_SKIP;
|
|
else
|
|
{
|
|
fprintf(stderr, "pcregrep: Invalid value \"%s\" for -d\n", dee_option);
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
if (DEE_option != NULL)
|
|
{
|
|
if (strcmp(DEE_option, "read") == 0) DEE_action = DEE_READ;
|
|
else if (strcmp(DEE_option, "skip") == 0) DEE_action = DEE_SKIP;
|
|
else
|
|
{
|
|
fprintf(stderr, "pcregrep: Invalid value \"%s\" for -D\n", DEE_option);
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
/* Check the values for Jeffrey Friedl's debugging options. */
|
|
|
|
#ifdef JFRIEDL_DEBUG
|
|
if (S_arg > 9)
|
|
{
|
|
fprintf(stderr, "pcregrep: bad value for -S option\n");
|
|
return 2;
|
|
}
|
|
if (jfriedl_XT != 0 || jfriedl_XR != 0)
|
|
{
|
|
if (jfriedl_XT == 0) jfriedl_XT = 1;
|
|
if (jfriedl_XR == 0) jfriedl_XR = 1;
|
|
}
|
|
#endif
|
|
|
|
/* Get memory for the main buffer. */
|
|
|
|
bufsize = 3*bufthird;
|
|
main_buffer = (char *)malloc(bufsize);
|
|
|
|
if (main_buffer == NULL)
|
|
{
|
|
fprintf(stderr, "pcregrep: malloc failed\n");
|
|
goto EXIT2;
|
|
}
|
|
|
|
/* If no patterns were provided by -e, and there are no files provided by -f,
|
|
the first argument is the one and only pattern, and it must exist. */
|
|
|
|
if (patterns == NULL && pattern_files == NULL)
|
|
{
|
|
if (i >= argc) return usage(2);
|
|
patterns = patterns_last = add_pattern(argv[i++], NULL);
|
|
if (patterns == NULL) goto EXIT2;
|
|
}
|
|
|
|
/* Compile the patterns that were provided on the command line, either by
|
|
multiple uses of -e or as a single unkeyed pattern. We cannot do this until
|
|
after all the command-line options are read so that we know which PCRE options
|
|
to use. When -F is used, compile_pattern() may add another block into the
|
|
chain, so we must not access the next pointer till after the compile. */
|
|
|
|
for (j = 1, cp = patterns; cp != NULL; j++, cp = cp->next)
|
|
{
|
|
if (!compile_pattern(cp, pcre_options, process_options, FALSE, "command-line",
|
|
(j == 1 && patterns->next == NULL)? 0 : j))
|
|
goto EXIT2;
|
|
}
|
|
|
|
/* Read and compile the regular expressions that are provided in files. */
|
|
|
|
for (fn = pattern_files; fn != NULL; fn = fn->next)
|
|
{
|
|
if (!read_pattern_file(fn->name, &patterns, &patterns_last, process_options))
|
|
goto EXIT2;
|
|
}
|
|
|
|
/* Study the regular expressions, as we will be running them many times. If an
|
|
extra block is needed for a limit, set PCRE_STUDY_EXTRA_NEEDED so that one is
|
|
returned, even if studying produces no data. */
|
|
|
|
if (match_limit > 0 || match_limit_recursion > 0)
|
|
study_options |= PCRE_STUDY_EXTRA_NEEDED;
|
|
|
|
/* Unless JIT has been explicitly disabled, arrange a stack for it to use. */
|
|
|
|
#ifdef SUPPORT_PCREGREP_JIT
|
|
if ((study_options & PCRE_STUDY_JIT_COMPILE) != 0)
|
|
jit_stack = pcre_jit_stack_alloc(32*1024, 1024*1024);
|
|
#endif
|
|
|
|
for (j = 1, cp = patterns; cp != NULL; j++, cp = cp->next)
|
|
{
|
|
cp->hint = pcre_study(cp->compiled, study_options, &error);
|
|
if (error != NULL)
|
|
{
|
|
char s[16];
|
|
if (patterns->next == NULL) s[0] = 0; else sprintf(s, " number %d", j);
|
|
fprintf(stderr, "pcregrep: Error while studying regex%s: %s\n", s, error);
|
|
goto EXIT2;
|
|
}
|
|
#ifdef SUPPORT_PCREGREP_JIT
|
|
if (jit_stack != NULL && cp->hint != NULL)
|
|
pcre_assign_jit_stack(cp->hint, NULL, jit_stack);
|
|
#endif
|
|
}
|
|
|
|
/* If --match-limit or --recursion-limit was set, put the value(s) into the
|
|
pcre_extra block for each pattern. There will always be an extra block because
|
|
of the use of PCRE_STUDY_EXTRA_NEEDED above. */
|
|
|
|
for (cp = patterns; cp != NULL; cp = cp->next)
|
|
{
|
|
if (match_limit > 0)
|
|
{
|
|
cp->hint->flags |= PCRE_EXTRA_MATCH_LIMIT;
|
|
cp->hint->match_limit = match_limit;
|
|
}
|
|
|
|
if (match_limit_recursion > 0)
|
|
{
|
|
cp->hint->flags |= PCRE_EXTRA_MATCH_LIMIT_RECURSION;
|
|
cp->hint->match_limit_recursion = match_limit_recursion;
|
|
}
|
|
}
|
|
|
|
/* If there are include or exclude patterns read from the command line, compile
|
|
them. -F, -w, and -x do not apply, so the third argument of compile_pattern is
|
|
0. */
|
|
|
|
for (j = 0; j < 4; j++)
|
|
{
|
|
int k;
|
|
for (k = 1, cp = *(incexlist[j]); cp != NULL; k++, cp = cp->next)
|
|
{
|
|
if (!compile_pattern(cp, pcre_options, 0, FALSE, incexname[j],
|
|
(k == 1 && cp->next == NULL)? 0 : k))
|
|
goto EXIT2;
|
|
}
|
|
}
|
|
|
|
/* Read and compile include/exclude patterns from files. */
|
|
|
|
for (fn = include_from; fn != NULL; fn = fn->next)
|
|
{
|
|
if (!read_pattern_file(fn->name, &include_patterns, &include_patterns_last, 0))
|
|
goto EXIT2;
|
|
}
|
|
|
|
for (fn = exclude_from; fn != NULL; fn = fn->next)
|
|
{
|
|
if (!read_pattern_file(fn->name, &exclude_patterns, &exclude_patterns_last, 0))
|
|
goto EXIT2;
|
|
}
|
|
|
|
/* If there are no files that contain lists of files to search, and there are
|
|
no file arguments, search stdin, and then exit. */
|
|
|
|
if (file_lists == NULL && i >= argc)
|
|
{
|
|
rc = pcregrep(stdin, FR_PLAIN, stdin_name,
|
|
(filenames > FN_DEFAULT)? stdin_name : NULL);
|
|
goto EXIT;
|
|
}
|
|
|
|
/* If any files that contains a list of files to search have been specified,
|
|
read them line by line and search the given files. */
|
|
|
|
for (fn = file_lists; fn != NULL; fn = fn->next)
|
|
{
|
|
char buffer[PATBUFSIZE];
|
|
FILE *fl;
|
|
if (strcmp(fn->name, "-") == 0) fl = stdin; else
|
|
{
|
|
fl = fopen(fn->name, "rb");
|
|
if (fl == NULL)
|
|
{
|
|
fprintf(stderr, "pcregrep: Failed to open %s: %s\n", fn->name,
|
|
strerror(errno));
|
|
goto EXIT2;
|
|
}
|
|
}
|
|
while (fgets(buffer, PATBUFSIZE, fl) != NULL)
|
|
{
|
|
int frc;
|
|
char *end = buffer + (int)strlen(buffer);
|
|
while (end > buffer && isspace(end[-1])) end--;
|
|
*end = 0;
|
|
if (*buffer != 0)
|
|
{
|
|
frc = grep_or_recurse(buffer, dee_action == dee_RECURSE, FALSE);
|
|
if (frc > 1) rc = frc;
|
|
else if (frc == 0 && rc == 1) rc = 0;
|
|
}
|
|
}
|
|
if (fl != stdin) fclose(fl);
|
|
}
|
|
|
|
/* After handling file-list, work through remaining arguments. Pass in the fact
|
|
that there is only one argument at top level - this suppresses the file name if
|
|
the argument is not a directory and filenames are not otherwise forced. */
|
|
|
|
only_one_at_top = i == argc - 1 && file_lists == NULL;
|
|
|
|
for (; i < argc; i++)
|
|
{
|
|
int frc = grep_or_recurse(argv[i], dee_action == dee_RECURSE,
|
|
only_one_at_top);
|
|
if (frc > 1) rc = frc;
|
|
else if (frc == 0 && rc == 1) rc = 0;
|
|
}
|
|
|
|
EXIT:
|
|
#ifdef SUPPORT_PCREGREP_JIT
|
|
if (jit_stack != NULL) pcre_jit_stack_free(jit_stack);
|
|
#endif
|
|
|
|
if (main_buffer != NULL) free(main_buffer);
|
|
|
|
free_pattern_chain(patterns);
|
|
free_pattern_chain(include_patterns);
|
|
free_pattern_chain(include_dir_patterns);
|
|
free_pattern_chain(exclude_patterns);
|
|
free_pattern_chain(exclude_dir_patterns);
|
|
|
|
free_file_chain(exclude_from);
|
|
free_file_chain(include_from);
|
|
free_file_chain(pattern_files);
|
|
free_file_chain(file_lists);
|
|
|
|
while (only_matching != NULL)
|
|
{
|
|
omstr *this = only_matching;
|
|
only_matching = this->next;
|
|
free(this);
|
|
}
|
|
|
|
pcregrep_exit(rc);
|
|
|
|
EXIT2:
|
|
rc = 2;
|
|
goto EXIT;
|
|
}
|
|
|
|
/* End of pcregrep */
|