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/*************************************************
|
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* pcregrep program *
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*************************************************/
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/* This is a grep program that uses the PCRE regular expression library to do
|
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its pattern matching. On a Unix or Win32 system it can recurse into
|
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directories.
|
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|
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Copyright (c) 1997-2007 University of Cambridge
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-----------------------------------------------------------------------------
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Redistribution and use in source and binary forms, with or without
|
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the University of Cambridge nor the names of its
|
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contributors may be used to endorse or promote products derived from
|
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
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POSSIBILITY OF SUCH DAMAGE.
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-----------------------------------------------------------------------------
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <ctype.h>
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#include <locale.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <pcre.h>
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#define FALSE 0
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#define TRUE 1
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typedef int BOOL;
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#define MAX_PATTERN_COUNT 100
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#if BUFSIZ > 8192
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#define MBUFTHIRD BUFSIZ
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#else
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#define MBUFTHIRD 8192
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#endif
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/* Values for the "filenames" variable, which specifies options for file name
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output. The order is important; it is assumed that a file name is wanted for
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all values greater than FN_DEFAULT. */
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enum { FN_NONE, FN_DEFAULT, FN_ONLY, FN_NOMATCH_ONLY, FN_FORCE };
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/* Actions for the -d and -D options */
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enum { dee_READ, dee_SKIP, dee_RECURSE };
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enum { DEE_READ, DEE_SKIP };
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/* Actions for special processing options (flag bits) */
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#define PO_WORD_MATCH 0x0001
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#define PO_LINE_MATCH 0x0002
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#define PO_FIXED_STRINGS 0x0004
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/* Line ending types */
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enum { EL_LF, EL_CR, EL_CRLF, EL_ANY, EL_ANYCRLF };
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/*************************************************
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* Global variables *
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*************************************************/
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/* Jeffrey Friedl has some debugging requirements that are not part of the
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regular code. */
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#ifdef JFRIEDL_DEBUG
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static int S_arg = -1;
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static unsigned int jfriedl_XR = 0; /* repeat regex attempt this many times */
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static unsigned int jfriedl_XT = 0; /* replicate text this many times */
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static const char *jfriedl_prefix = "";
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static const char *jfriedl_postfix = "";
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#endif
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static int endlinetype;
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static char *colour_string = (char *)"1;31";
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static char *colour_option = NULL;
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static char *dee_option = NULL;
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static char *DEE_option = NULL;
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static char *newline = NULL;
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static char *pattern_filename = NULL;
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static char *stdin_name = (char *)"(standard input)";
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static char *locale = NULL;
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static const unsigned char *pcretables = NULL;
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static int pattern_count = 0;
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static pcre **pattern_list = NULL;
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static pcre_extra **hints_list = NULL;
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static char *include_pattern = NULL;
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static char *exclude_pattern = NULL;
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static pcre *include_compiled = NULL;
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static pcre *exclude_compiled = NULL;
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static int after_context = 0;
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static int before_context = 0;
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static int both_context = 0;
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static int dee_action = dee_READ;
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static int DEE_action = DEE_READ;
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static int error_count = 0;
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static int filenames = FN_DEFAULT;
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static int process_options = 0;
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static BOOL count_only = FALSE;
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static BOOL do_colour = FALSE;
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static BOOL hyphenpending = FALSE;
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static BOOL invert = FALSE;
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static BOOL multiline = FALSE;
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static BOOL number = FALSE;
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static BOOL only_matching = FALSE;
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static BOOL quiet = FALSE;
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static BOOL silent = FALSE;
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static BOOL utf8 = FALSE;
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/* Structure for options and list of them */
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enum { OP_NODATA, OP_STRING, OP_OP_STRING, OP_NUMBER, OP_OP_NUMBER,
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OP_PATLIST };
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typedef struct option_item {
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int type;
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int one_char;
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void *dataptr;
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const char *long_name;
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const char *help_text;
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} option_item;
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/* Options without a single-letter equivalent get a negative value. This can be
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used to identify them. */
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#define N_COLOUR (-1)
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#define N_EXCLUDE (-2)
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#define N_HELP (-3)
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#define N_INCLUDE (-4)
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#define N_LABEL (-5)
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#define N_LOCALE (-6)
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#define N_NULL (-7)
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static option_item optionlist[] = {
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{ OP_NODATA, N_NULL, NULL, "", " terminate options" },
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{ OP_NODATA, N_HELP, NULL, "help", "display this help and exit" },
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{ OP_NUMBER, 'A', &after_context, "after-context=number", "set number of following context lines" },
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{ OP_NUMBER, 'B', &before_context, "before-context=number", "set number of prior context lines" },
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{ OP_OP_STRING, N_COLOUR, &colour_option, "color=option", "matched text color option" },
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{ OP_NUMBER, 'C', &both_context, "context=number", "set number of context lines, before & after" },
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{ OP_NODATA, 'c', NULL, "count", "print only a count of matching lines per FILE" },
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{ OP_OP_STRING, N_COLOUR, &colour_option, "colour=option", "matched text colour option" },
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{ OP_STRING, 'D', &DEE_option, "devices=action","how to handle devices, FIFOs, and sockets" },
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{ OP_STRING, 'd', &dee_option, "directories=action", "how to handle directories" },
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{ OP_PATLIST, 'e', NULL, "regex(p)", "specify pattern (may be used more than once)" },
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{ OP_NODATA, 'F', NULL, "fixed_strings", "patterns are sets of newline-separated strings" },
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{ OP_STRING, 'f', &pattern_filename, "file=path", "read patterns from file" },
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{ OP_NODATA, 'H', NULL, "with-filename", "force the prefixing filename on output" },
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{ OP_NODATA, 'h', NULL, "no-filename", "suppress the prefixing filename on output" },
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{ OP_NODATA, 'i', NULL, "ignore-case", "ignore case distinctions" },
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{ OP_NODATA, 'l', NULL, "files-with-matches", "print only FILE names containing matches" },
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{ OP_NODATA, 'L', NULL, "files-without-match","print only FILE names not containing matches" },
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{ OP_STRING, N_LABEL, &stdin_name, "label=name", "set name for standard input" },
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{ OP_STRING, N_LOCALE, &locale, "locale=locale", "use the named locale" },
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{ OP_NODATA, 'M', NULL, "multiline", "run in multiline mode" },
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{ OP_STRING, 'N', &newline, "newline=type", "specify newline type (CR, LF, CRLF, ANYCRLF or ANY)" },
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{ OP_NODATA, 'n', NULL, "line-number", "print line number with output lines" },
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{ OP_NODATA, 'o', NULL, "only-matching", "show only the part of the line that matched" },
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{ OP_NODATA, 'q', NULL, "quiet", "suppress output, just set return code" },
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{ OP_NODATA, 'r', NULL, "recursive", "recursively scan sub-directories" },
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{ OP_STRING, N_EXCLUDE,&exclude_pattern, "exclude=pattern","exclude matching files when recursing" },
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{ OP_STRING, N_INCLUDE,&include_pattern, "include=pattern","include matching files when recursing" },
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#ifdef JFRIEDL_DEBUG
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{ OP_OP_NUMBER, 'S', &S_arg, "jeffS", "replace matched (sub)string with X" },
|
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#endif
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{ OP_NODATA, 's', NULL, "no-messages", "suppress error messages" },
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{ OP_NODATA, 'u', NULL, "utf-8", "use UTF-8 mode" },
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{ OP_NODATA, 'V', NULL, "version", "print version information and exit" },
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{ OP_NODATA, 'v', NULL, "invert-match", "select non-matching lines" },
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{ OP_NODATA, 'w', NULL, "word-regex(p)", "force patterns to match only as words" },
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{ OP_NODATA, 'x', NULL, "line-regex(p)", "force patterns to match only whole lines" },
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{ OP_NODATA, 0, NULL, NULL, NULL }
|
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};
|
217 |
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/* Tables for prefixing and suffixing patterns, according to the -w, -x, and -F
|
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options. These set the 1, 2, and 4 bits in process_options, respectively. Note
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that the combination of -w and -x has the same effect as -x on its own, so we
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can treat them as the same. */
|
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static const char *prefix[] = {
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"", "\\b", "^(?:", "^(?:", "\\Q", "\\b\\Q", "^(?:\\Q", "^(?:\\Q" };
|
225 |
|
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static const char *suffix[] = {
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"", "\\b", ")$", ")$", "\\E", "\\E\\b", "\\E)$", "\\E)$" };
|
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|
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/* UTF-8 tables - used only when the newline setting is "any". */
|
230 |
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const int utf8_table3[] = { 0xff, 0x1f, 0x0f, 0x07, 0x03, 0x01};
|
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const char utf8_table4[] = {
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
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3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5 };
|
238 |
|
239 |
|
240 |
|
241 |
/*************************************************
|
242 |
* OS-specific functions *
|
243 |
*************************************************/
|
244 |
|
245 |
/* These functions are defined so that they can be made system specific,
|
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although at present the only ones are for Unix, Win32, and for "no support". */
|
247 |
|
248 |
|
249 |
/************* Directory scanning in Unix ***********/
|
250 |
|
251 |
#if defined HAVE_SYS_STAT_H && defined HAVE_DIRENT_H && defined HAVE_SYS_TYPES_H
|
252 |
#include <sys/types.h>
|
253 |
#include <sys/stat.h>
|
254 |
#include <dirent.h>
|
255 |
|
256 |
typedef DIR directory_type;
|
257 |
|
258 |
static int
|
259 |
isdirectory(char *filename)
|
260 |
{
|
261 |
struct stat statbuf;
|
262 |
if (stat(filename, &statbuf) < 0)
|
263 |
return 0; /* In the expectation that opening as a file will fail */
|
264 |
return ((statbuf.st_mode & S_IFMT) == S_IFDIR)? '/' : 0;
|
265 |
}
|
266 |
|
267 |
static directory_type *
|
268 |
opendirectory(char *filename)
|
269 |
{
|
270 |
return opendir(filename);
|
271 |
}
|
272 |
|
273 |
static char *
|
274 |
readdirectory(directory_type *dir)
|
275 |
{
|
276 |
for (;;)
|
277 |
{
|
278 |
struct dirent *dent = readdir(dir);
|
279 |
if (dent == NULL) return NULL;
|
280 |
if (strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0)
|
281 |
return dent->d_name;
|
282 |
}
|
283 |
/* Control never reaches here */
|
284 |
}
|
285 |
|
286 |
static void
|
287 |
closedirectory(directory_type *dir)
|
288 |
{
|
289 |
closedir(dir);
|
290 |
}
|
291 |
|
292 |
|
293 |
/************* Test for regular file in Unix **********/
|
294 |
|
295 |
static int
|
296 |
isregfile(char *filename)
|
297 |
{
|
298 |
struct stat statbuf;
|
299 |
if (stat(filename, &statbuf) < 0)
|
300 |
return 1; /* In the expectation that opening as a file will fail */
|
301 |
return (statbuf.st_mode & S_IFMT) == S_IFREG;
|
302 |
}
|
303 |
|
304 |
|
305 |
/************* Test stdout for being a terminal in Unix **********/
|
306 |
|
307 |
static BOOL
|
308 |
is_stdout_tty(void)
|
309 |
{
|
310 |
return isatty(fileno(stdout));
|
311 |
}
|
312 |
|
313 |
|
314 |
/************* Directory scanning in Win32 ***********/
|
315 |
|
316 |
/* I (Philip Hazel) have no means of testing this code. It was contributed by
|
317 |
Lionel Fourquaux. David Burgess added a patch to define INVALID_FILE_ATTRIBUTES
|
318 |
when it did not exist. */
|
319 |
|
320 |
|
321 |
#elif HAVE_WINDOWS_H
|
322 |
|
323 |
#ifndef STRICT
|
324 |
# define STRICT
|
325 |
#endif
|
326 |
#ifndef WIN32_LEAN_AND_MEAN
|
327 |
# define WIN32_LEAN_AND_MEAN
|
328 |
#endif
|
329 |
#ifndef INVALID_FILE_ATTRIBUTES
|
330 |
#define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF
|
331 |
#endif
|
332 |
|
333 |
#include <windows.h>
|
334 |
|
335 |
typedef struct directory_type
|
336 |
{
|
337 |
HANDLE handle;
|
338 |
BOOL first;
|
339 |
WIN32_FIND_DATA data;
|
340 |
} directory_type;
|
341 |
|
342 |
int
|
343 |
isdirectory(char *filename)
|
344 |
{
|
345 |
DWORD attr = GetFileAttributes(filename);
|
346 |
if (attr == INVALID_FILE_ATTRIBUTES)
|
347 |
return 0;
|
348 |
return ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) ? '/' : 0;
|
349 |
}
|
350 |
|
351 |
directory_type *
|
352 |
opendirectory(char *filename)
|
353 |
{
|
354 |
size_t len;
|
355 |
char *pattern;
|
356 |
directory_type *dir;
|
357 |
DWORD err;
|
358 |
len = strlen(filename);
|
359 |
pattern = (char *) malloc(len + 3);
|
360 |
dir = (directory_type *) malloc(sizeof(*dir));
|
361 |
if ((pattern == NULL) || (dir == NULL))
|
362 |
{
|
363 |
fprintf(stderr, "pcregrep: malloc failed\n");
|
364 |
exit(2);
|
365 |
}
|
366 |
memcpy(pattern, filename, len);
|
367 |
memcpy(&(pattern[len]), "\\*", 3);
|
368 |
dir->handle = FindFirstFile(pattern, &(dir->data));
|
369 |
if (dir->handle != INVALID_HANDLE_VALUE)
|
370 |
{
|
371 |
free(pattern);
|
372 |
dir->first = TRUE;
|
373 |
return dir;
|
374 |
}
|
375 |
err = GetLastError();
|
376 |
free(pattern);
|
377 |
free(dir);
|
378 |
errno = (err == ERROR_ACCESS_DENIED) ? EACCES : ENOENT;
|
379 |
return NULL;
|
380 |
}
|
381 |
|
382 |
char *
|
383 |
readdirectory(directory_type *dir)
|
384 |
{
|
385 |
for (;;)
|
386 |
{
|
387 |
if (!dir->first)
|
388 |
{
|
389 |
if (!FindNextFile(dir->handle, &(dir->data)))
|
390 |
return NULL;
|
391 |
}
|
392 |
else
|
393 |
{
|
394 |
dir->first = FALSE;
|
395 |
}
|
396 |
if (strcmp(dir->data.cFileName, ".") != 0 && strcmp(dir->data.cFileName, "..") != 0)
|
397 |
return dir->data.cFileName;
|
398 |
}
|
399 |
#ifndef _MSC_VER
|
400 |
return NULL; /* Keep compiler happy; never executed */
|
401 |
#endif
|
402 |
}
|
403 |
|
404 |
void
|
405 |
closedirectory(directory_type *dir)
|
406 |
{
|
407 |
FindClose(dir->handle);
|
408 |
free(dir);
|
409 |
}
|
410 |
|
411 |
|
412 |
/************* Test for regular file in Win32 **********/
|
413 |
|
414 |
/* I don't know how to do this, or if it can be done; assume all paths are
|
415 |
regular if they are not directories. */
|
416 |
|
417 |
int isregfile(char *filename)
|
418 |
{
|
419 |
return !isdirectory(filename)
|
420 |
}
|
421 |
|
422 |
|
423 |
/************* Test stdout for being a terminal in Win32 **********/
|
424 |
|
425 |
/* I don't know how to do this; assume never */
|
426 |
|
427 |
static BOOL
|
428 |
is_stdout_tty(void)
|
429 |
{
|
430 |
FALSE;
|
431 |
}
|
432 |
|
433 |
|
434 |
/************* Directory scanning when we can't do it ***********/
|
435 |
|
436 |
/* The type is void, and apart from isdirectory(), the functions do nothing. */
|
437 |
|
438 |
#else
|
439 |
|
440 |
typedef void directory_type;
|
441 |
|
442 |
int isdirectory(char *filename) { return 0; }
|
443 |
directory_type * opendirectory(char *filename) { return (directory_type*)0;}
|
444 |
char *readdirectory(directory_type *dir) { return (char*)0;}
|
445 |
void closedirectory(directory_type *dir) {}
|
446 |
|
447 |
|
448 |
/************* Test for regular when we can't do it **********/
|
449 |
|
450 |
/* Assume all files are regular. */
|
451 |
|
452 |
int isregfile(char *filename) { return 1; }
|
453 |
|
454 |
|
455 |
/************* Test stdout for being a terminal when we can't do it **********/
|
456 |
|
457 |
static BOOL
|
458 |
is_stdout_tty(void)
|
459 |
{
|
460 |
return FALSE;
|
461 |
}
|
462 |
|
463 |
|
464 |
#endif
|
465 |
|
466 |
|
467 |
|
468 |
#ifndef HAVE_STRERROR
|
469 |
/*************************************************
|
470 |
* Provide strerror() for non-ANSI libraries *
|
471 |
*************************************************/
|
472 |
|
473 |
/* Some old-fashioned systems still around (e.g. SunOS4) don't have strerror()
|
474 |
in their libraries, but can provide the same facility by this simple
|
475 |
alternative function. */
|
476 |
|
477 |
extern int sys_nerr;
|
478 |
extern char *sys_errlist[];
|
479 |
|
480 |
char *
|
481 |
strerror(int n)
|
482 |
{
|
483 |
if (n < 0 || n >= sys_nerr) return "unknown error number";
|
484 |
return sys_errlist[n];
|
485 |
}
|
486 |
#endif /* HAVE_STRERROR */
|
487 |
|
488 |
|
489 |
|
490 |
/*************************************************
|
491 |
* Find end of line *
|
492 |
*************************************************/
|
493 |
|
494 |
/* The length of the endline sequence that is found is set via lenptr. This may
|
495 |
be zero at the very end of the file if there is no line-ending sequence there.
|
496 |
|
497 |
Arguments:
|
498 |
p current position in line
|
499 |
endptr end of available data
|
500 |
lenptr where to put the length of the eol sequence
|
501 |
|
502 |
Returns: pointer to the last byte of the line
|
503 |
*/
|
504 |
|
505 |
static char *
|
506 |
end_of_line(char *p, char *endptr, int *lenptr)
|
507 |
{
|
508 |
switch(endlinetype)
|
509 |
{
|
510 |
default: /* Just in case */
|
511 |
case EL_LF:
|
512 |
while (p < endptr && *p != '\n') p++;
|
513 |
if (p < endptr)
|
514 |
{
|
515 |
*lenptr = 1;
|
516 |
return p + 1;
|
517 |
}
|
518 |
*lenptr = 0;
|
519 |
return endptr;
|
520 |
|
521 |
case EL_CR:
|
522 |
while (p < endptr && *p != '\r') p++;
|
523 |
if (p < endptr)
|
524 |
{
|
525 |
*lenptr = 1;
|
526 |
return p + 1;
|
527 |
}
|
528 |
*lenptr = 0;
|
529 |
return endptr;
|
530 |
|
531 |
case EL_CRLF:
|
532 |
for (;;)
|
533 |
{
|
534 |
while (p < endptr && *p != '\r') p++;
|
535 |
if (++p >= endptr)
|
536 |
{
|
537 |
*lenptr = 0;
|
538 |
return endptr;
|
539 |
}
|
540 |
if (*p == '\n')
|
541 |
{
|
542 |
*lenptr = 2;
|
543 |
return p + 1;
|
544 |
}
|
545 |
}
|
546 |
break;
|
547 |
|
548 |
case EL_ANYCRLF:
|
549 |
while (p < endptr)
|
550 |
{
|
551 |
int extra = 0;
|
552 |
register int c = *((unsigned char *)p);
|
553 |
|
554 |
if (utf8 && c >= 0xc0)
|
555 |
{
|
556 |
int gcii, gcss;
|
557 |
extra = utf8_table4[c & 0x3f]; /* Number of additional bytes */
|
558 |
gcss = 6*extra;
|
559 |
c = (c & utf8_table3[extra]) << gcss;
|
560 |
for (gcii = 1; gcii <= extra; gcii++)
|
561 |
{
|
562 |
gcss -= 6;
|
563 |
c |= (p[gcii] & 0x3f) << gcss;
|
564 |
}
|
565 |
}
|
566 |
|
567 |
p += 1 + extra;
|
568 |
|
569 |
switch (c)
|
570 |
{
|
571 |
case 0x0a: /* LF */
|
572 |
*lenptr = 1;
|
573 |
return p;
|
574 |
|
575 |
case 0x0d: /* CR */
|
576 |
if (p < endptr && *p == 0x0a)
|
577 |
{
|
578 |
*lenptr = 2;
|
579 |
p++;
|
580 |
}
|
581 |
else *lenptr = 1;
|
582 |
return p;
|
583 |
|
584 |
default:
|
585 |
break;
|
586 |
}
|
587 |
} /* End of loop for ANYCRLF case */
|
588 |
|
589 |
*lenptr = 0; /* Must have hit the end */
|
590 |
return endptr;
|
591 |
|
592 |
case EL_ANY:
|
593 |
while (p < endptr)
|
594 |
{
|
595 |
int extra = 0;
|
596 |
register int c = *((unsigned char *)p);
|
597 |
|
598 |
if (utf8 && c >= 0xc0)
|
599 |
{
|
600 |
int gcii, gcss;
|
601 |
extra = utf8_table4[c & 0x3f]; /* Number of additional bytes */
|
602 |
gcss = 6*extra;
|
603 |
c = (c & utf8_table3[extra]) << gcss;
|
604 |
for (gcii = 1; gcii <= extra; gcii++)
|
605 |
{
|
606 |
gcss -= 6;
|
607 |
c |= (p[gcii] & 0x3f) << gcss;
|
608 |
}
|
609 |
}
|
610 |
|
611 |
p += 1 + extra;
|
612 |
|
613 |
switch (c)
|
614 |
{
|
615 |
case 0x0a: /* LF */
|
616 |
case 0x0b: /* VT */
|
617 |
case 0x0c: /* FF */
|
618 |
*lenptr = 1;
|
619 |
return p;
|
620 |
|
621 |
case 0x0d: /* CR */
|
622 |
if (p < endptr && *p == 0x0a)
|
623 |
{
|
624 |
*lenptr = 2;
|
625 |
p++;
|
626 |
}
|
627 |
else *lenptr = 1;
|
628 |
return p;
|
629 |
|
630 |
case 0x85: /* NEL */
|
631 |
*lenptr = utf8? 2 : 1;
|
632 |
return p;
|
633 |
|
634 |
case 0x2028: /* LS */
|
635 |
case 0x2029: /* PS */
|
636 |
*lenptr = 3;
|
637 |
return p;
|
638 |
|
639 |
default:
|
640 |
break;
|
641 |
}
|
642 |
} /* End of loop for ANY case */
|
643 |
|
644 |
*lenptr = 0; /* Must have hit the end */
|
645 |
return endptr;
|
646 |
} /* End of overall switch */
|
647 |
}
|
648 |
|
649 |
|
650 |
|
651 |
/*************************************************
|
652 |
* Find start of previous line *
|
653 |
*************************************************/
|
654 |
|
655 |
/* This is called when looking back for before lines to print.
|
656 |
|
657 |
Arguments:
|
658 |
p start of the subsequent line
|
659 |
startptr start of available data
|
660 |
|
661 |
Returns: pointer to the start of the previous line
|
662 |
*/
|
663 |
|
664 |
static char *
|
665 |
previous_line(char *p, char *startptr)
|
666 |
{
|
667 |
switch(endlinetype)
|
668 |
{
|
669 |
default: /* Just in case */
|
670 |
case EL_LF:
|
671 |
p--;
|
672 |
while (p > startptr && p[-1] != '\n') p--;
|
673 |
return p;
|
674 |
|
675 |
case EL_CR:
|
676 |
p--;
|
677 |
while (p > startptr && p[-1] != '\n') p--;
|
678 |
return p;
|
679 |
|
680 |
case EL_CRLF:
|
681 |
for (;;)
|
682 |
{
|
683 |
p -= 2;
|
684 |
while (p > startptr && p[-1] != '\n') p--;
|
685 |
if (p <= startptr + 1 || p[-2] == '\r') return p;
|
686 |
}
|
687 |
return p; /* But control should never get here */
|
688 |
|
689 |
case EL_ANY:
|
690 |
case EL_ANYCRLF:
|
691 |
if (*(--p) == '\n' && p > startptr && p[-1] == '\r') p--;
|
692 |
if (utf8) while ((*p & 0xc0) == 0x80) p--;
|
693 |
|
694 |
while (p > startptr)
|
695 |
{
|
696 |
register int c;
|
697 |
char *pp = p - 1;
|
698 |
|
699 |
if (utf8)
|
700 |
{
|
701 |
int extra = 0;
|
702 |
while ((*pp & 0xc0) == 0x80) pp--;
|
703 |
c = *((unsigned char *)pp);
|
704 |
if (c >= 0xc0)
|
705 |
{
|
706 |
int gcii, gcss;
|
707 |
extra = utf8_table4[c & 0x3f]; /* Number of additional bytes */
|
708 |
gcss = 6*extra;
|
709 |
c = (c & utf8_table3[extra]) << gcss;
|
710 |
for (gcii = 1; gcii <= extra; gcii++)
|
711 |
{
|
712 |
gcss -= 6;
|
713 |
c |= (pp[gcii] & 0x3f) << gcss;
|
714 |
}
|
715 |
}
|
716 |
}
|
717 |
else c = *((unsigned char *)pp);
|
718 |
|
719 |
if (endlinetype == EL_ANYCRLF) switch (c)
|
720 |
{
|
721 |
case 0x0a: /* LF */
|
722 |
case 0x0d: /* CR */
|
723 |
return p;
|
724 |
|
725 |
default:
|
726 |
break;
|
727 |
}
|
728 |
|
729 |
else switch (c)
|
730 |
{
|
731 |
case 0x0a: /* LF */
|
732 |
case 0x0b: /* VT */
|
733 |
case 0x0c: /* FF */
|
734 |
case 0x0d: /* CR */
|
735 |
case 0x85: /* NEL */
|
736 |
case 0x2028: /* LS */
|
737 |
case 0x2029: /* PS */
|
738 |
return p;
|
739 |
|
740 |
default:
|
741 |
break;
|
742 |
}
|
743 |
|
744 |
p = pp; /* Back one character */
|
745 |
} /* End of loop for ANY case */
|
746 |
|
747 |
return startptr; /* Hit start of data */
|
748 |
} /* End of overall switch */
|
749 |
}
|
750 |
|
751 |
|
752 |
|
753 |
|
754 |
|
755 |
/*************************************************
|
756 |
* Print the previous "after" lines *
|
757 |
*************************************************/
|
758 |
|
759 |
/* This is called if we are about to lose said lines because of buffer filling,
|
760 |
and at the end of the file. The data in the line is written using fwrite() so
|
761 |
that a binary zero does not terminate it.
|
762 |
|
763 |
Arguments:
|
764 |
lastmatchnumber the number of the last matching line, plus one
|
765 |
lastmatchrestart where we restarted after the last match
|
766 |
endptr end of available data
|
767 |
printname filename for printing
|
768 |
|
769 |
Returns: nothing
|
770 |
*/
|
771 |
|
772 |
static void do_after_lines(int lastmatchnumber, char *lastmatchrestart,
|
773 |
char *endptr, char *printname)
|
774 |
{
|
775 |
if (after_context > 0 && lastmatchnumber > 0)
|
776 |
{
|
777 |
int count = 0;
|
778 |
while (lastmatchrestart < endptr && count++ < after_context)
|
779 |
{
|
780 |
int ellength;
|
781 |
char *pp = lastmatchrestart;
|
782 |
if (printname != NULL) fprintf(stdout, "%s-", printname);
|
783 |
if (number) fprintf(stdout, "%d-", lastmatchnumber++);
|
784 |
pp = end_of_line(pp, endptr, &ellength);
|
785 |
fwrite(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
|
786 |
lastmatchrestart = pp;
|
787 |
}
|
788 |
hyphenpending = TRUE;
|
789 |
}
|
790 |
}
|
791 |
|
792 |
|
793 |
|
794 |
/*************************************************
|
795 |
* Grep an individual file *
|
796 |
*************************************************/
|
797 |
|
798 |
/* This is called from grep_or_recurse() below. It uses a buffer that is three
|
799 |
times the value of MBUFTHIRD. The matching point is never allowed to stray into
|
800 |
the top third of the buffer, thus keeping more of the file available for
|
801 |
context printing or for multiline scanning. For large files, the pointer will
|
802 |
be in the middle third most of the time, so the bottom third is available for
|
803 |
"before" context printing.
|
804 |
|
805 |
Arguments:
|
806 |
in the fopened FILE stream
|
807 |
printname the file name if it is to be printed for each match
|
808 |
or NULL if the file name is not to be printed
|
809 |
it cannot be NULL if filenames[_nomatch]_only is set
|
810 |
|
811 |
Returns: 0 if there was at least one match
|
812 |
1 otherwise (no matches)
|
813 |
*/
|
814 |
|
815 |
static int
|
816 |
pcregrep(FILE *in, char *printname)
|
817 |
{
|
818 |
int rc = 1;
|
819 |
int linenumber = 1;
|
820 |
int lastmatchnumber = 0;
|
821 |
int count = 0;
|
822 |
int offsets[99];
|
823 |
char *lastmatchrestart = NULL;
|
824 |
char buffer[3*MBUFTHIRD];
|
825 |
char *ptr = buffer;
|
826 |
char *endptr;
|
827 |
size_t bufflength;
|
828 |
BOOL endhyphenpending = FALSE;
|
829 |
|
830 |
/* Do the first read into the start of the buffer and set up the pointer to
|
831 |
end of what we have. */
|
832 |
|
833 |
bufflength = fread(buffer, 1, 3*MBUFTHIRD, in);
|
834 |
endptr = buffer + bufflength;
|
835 |
|
836 |
/* Loop while the current pointer is not at the end of the file. For large
|
837 |
files, endptr will be at the end of the buffer when we are in the middle of the
|
838 |
file, but ptr will never get there, because as soon as it gets over 2/3 of the
|
839 |
way, the buffer is shifted left and re-filled. */
|
840 |
|
841 |
while (ptr < endptr)
|
842 |
{
|
843 |
int i, endlinelength;
|
844 |
int mrc = 0;
|
845 |
BOOL match = FALSE;
|
846 |
char *t = ptr;
|
847 |
size_t length, linelength;
|
848 |
|
849 |
/* At this point, ptr is at the start of a line. We need to find the length
|
850 |
of the subject string to pass to pcre_exec(). In multiline mode, it is the
|
851 |
length remainder of the data in the buffer. Otherwise, it is the length of
|
852 |
the next line. After matching, we always advance by the length of the next
|
853 |
line. In multiline mode the PCRE_FIRSTLINE option is used for compiling, so
|
854 |
that any match is constrained to be in the first line. */
|
855 |
|
856 |
t = end_of_line(t, endptr, &endlinelength);
|
857 |
linelength = t - ptr - endlinelength;
|
858 |
length = multiline? endptr - ptr : linelength;
|
859 |
|
860 |
/* Extra processing for Jeffrey Friedl's debugging. */
|
861 |
|
862 |
#ifdef JFRIEDL_DEBUG
|
863 |
if (jfriedl_XT || jfriedl_XR)
|
864 |
{
|
865 |
#include <sys/time.h>
|
866 |
#include <time.h>
|
867 |
struct timeval start_time, end_time;
|
868 |
struct timezone dummy;
|
869 |
|
870 |
if (jfriedl_XT)
|
871 |
{
|
872 |
unsigned long newlen = length * jfriedl_XT + strlen(jfriedl_prefix) + strlen(jfriedl_postfix);
|
873 |
const char *orig = ptr;
|
874 |
ptr = malloc(newlen + 1);
|
875 |
if (!ptr) {
|
876 |
printf("out of memory");
|
877 |
exit(2);
|
878 |
}
|
879 |
endptr = ptr;
|
880 |
strcpy(endptr, jfriedl_prefix); endptr += strlen(jfriedl_prefix);
|
881 |
for (i = 0; i < jfriedl_XT; i++) {
|
882 |
strncpy(endptr, orig, length);
|
883 |
endptr += length;
|
884 |
}
|
885 |
strcpy(endptr, jfriedl_postfix); endptr += strlen(jfriedl_postfix);
|
886 |
length = newlen;
|
887 |
}
|
888 |
|
889 |
if (gettimeofday(&start_time, &dummy) != 0)
|
890 |
perror("bad gettimeofday");
|
891 |
|
892 |
|
893 |
for (i = 0; i < jfriedl_XR; i++)
|
894 |
match = (pcre_exec(pattern_list[0], hints_list[0], ptr, length, 0, 0, offsets, 99) >= 0);
|
895 |
|
896 |
if (gettimeofday(&end_time, &dummy) != 0)
|
897 |
perror("bad gettimeofday");
|
898 |
|
899 |
double delta = ((end_time.tv_sec + (end_time.tv_usec / 1000000.0))
|
900 |
-
|
901 |
(start_time.tv_sec + (start_time.tv_usec / 1000000.0)));
|
902 |
|
903 |
printf("%s TIMER[%.4f]\n", match ? "MATCH" : "FAIL", delta);
|
904 |
return 0;
|
905 |
}
|
906 |
#endif
|
907 |
|
908 |
|
909 |
/* Run through all the patterns until one matches. Note that we don't include
|
910 |
the final newline in the subject string. */
|
911 |
|
912 |
for (i = 0; i < pattern_count; i++)
|
913 |
{
|
914 |
mrc = pcre_exec(pattern_list[i], hints_list[i], ptr, length, 0, 0,
|
915 |
offsets, 99);
|
916 |
if (mrc >= 0) { match = TRUE; break; }
|
917 |
if (mrc != PCRE_ERROR_NOMATCH)
|
918 |
{
|
919 |
fprintf(stderr, "pcregrep: pcre_exec() error %d while matching ", mrc);
|
920 |
if (pattern_count > 1) fprintf(stderr, "pattern number %d to ", i+1);
|
921 |
fprintf(stderr, "this line:\n");
|
922 |
fwrite(ptr, 1, linelength, stderr); /* In case binary zero included */
|
923 |
fprintf(stderr, "\n");
|
924 |
if (error_count == 0 &&
|
925 |
(mrc == PCRE_ERROR_MATCHLIMIT || mrc == PCRE_ERROR_RECURSIONLIMIT))
|
926 |
{
|
927 |
fprintf(stderr, "pcregrep: error %d means that a resource limit "
|
928 |
"was exceeded\n", mrc);
|
929 |
fprintf(stderr, "pcregrep: check your regex for nested unlimited loops\n");
|
930 |
}
|
931 |
if (error_count++ > 20)
|
932 |
{
|
933 |
fprintf(stderr, "pcregrep: too many errors - abandoned\n");
|
934 |
exit(2);
|
935 |
}
|
936 |
match = invert; /* No more matching; don't show the line again */
|
937 |
break;
|
938 |
}
|
939 |
}
|
940 |
|
941 |
/* If it's a match or a not-match (as required), do what's wanted. */
|
942 |
|
943 |
if (match != invert)
|
944 |
{
|
945 |
BOOL hyphenprinted = FALSE;
|
946 |
|
947 |
/* We've failed if we want a file that doesn't have any matches. */
|
948 |
|
949 |
if (filenames == FN_NOMATCH_ONLY) return 1;
|
950 |
|
951 |
/* Just count if just counting is wanted. */
|
952 |
|
953 |
if (count_only) count++;
|
954 |
|
955 |
/* If all we want is a file name, there is no need to scan any more lines
|
956 |
in the file. */
|
957 |
|
958 |
else if (filenames == FN_ONLY)
|
959 |
{
|
960 |
fprintf(stdout, "%s\n", printname);
|
961 |
return 0;
|
962 |
}
|
963 |
|
964 |
/* Likewise, if all we want is a yes/no answer. */
|
965 |
|
966 |
else if (quiet) return 0;
|
967 |
|
968 |
/* The --only-matching option prints just the substring that matched, and
|
969 |
does not pring any context. */
|
970 |
|
971 |
else if (only_matching)
|
972 |
{
|
973 |
if (printname != NULL) fprintf(stdout, "%s:", printname);
|
974 |
if (number) fprintf(stdout, "%d:", linenumber);
|
975 |
fwrite(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
|
976 |
fprintf(stdout, "\n");
|
977 |
}
|
978 |
|
979 |
/* This is the default case when none of the above options is set. We print
|
980 |
the matching lines(s), possibly preceded and/or followed by other lines of
|
981 |
context. */
|
982 |
|
983 |
else
|
984 |
{
|
985 |
/* See if there is a requirement to print some "after" lines from a
|
986 |
previous match. We never print any overlaps. */
|
987 |
|
988 |
if (after_context > 0 && lastmatchnumber > 0)
|
989 |
{
|
990 |
int ellength;
|
991 |
int linecount = 0;
|
992 |
char *p = lastmatchrestart;
|
993 |
|
994 |
while (p < ptr && linecount < after_context)
|
995 |
{
|
996 |
p = end_of_line(p, ptr, &ellength);
|
997 |
linecount++;
|
998 |
}
|
999 |
|
1000 |
/* It is important to advance lastmatchrestart during this printing so
|
1001 |
that it interacts correctly with any "before" printing below. Print
|
1002 |
each line's data using fwrite() in case there are binary zeroes. */
|
1003 |
|
1004 |
while (lastmatchrestart < p)
|
1005 |
{
|
1006 |
char *pp = lastmatchrestart;
|
1007 |
if (printname != NULL) fprintf(stdout, "%s-", printname);
|
1008 |
if (number) fprintf(stdout, "%d-", lastmatchnumber++);
|
1009 |
pp = end_of_line(pp, endptr, &ellength);
|
1010 |
fwrite(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
|
1011 |
lastmatchrestart = pp;
|
1012 |
}
|
1013 |
if (lastmatchrestart != ptr) hyphenpending = TRUE;
|
1014 |
}
|
1015 |
|
1016 |
/* If there were non-contiguous lines printed above, insert hyphens. */
|
1017 |
|
1018 |
if (hyphenpending)
|
1019 |
{
|
1020 |
fprintf(stdout, "--\n");
|
1021 |
hyphenpending = FALSE;
|
1022 |
hyphenprinted = TRUE;
|
1023 |
}
|
1024 |
|
1025 |
/* See if there is a requirement to print some "before" lines for this
|
1026 |
match. Again, don't print overlaps. */
|
1027 |
|
1028 |
if (before_context > 0)
|
1029 |
{
|
1030 |
int linecount = 0;
|
1031 |
char *p = ptr;
|
1032 |
|
1033 |
while (p > buffer && (lastmatchnumber == 0 || p > lastmatchrestart) &&
|
1034 |
linecount < before_context)
|
1035 |
{
|
1036 |
linecount++;
|
1037 |
p = previous_line(p, buffer);
|
1038 |
}
|
1039 |
|
1040 |
if (lastmatchnumber > 0 && p > lastmatchrestart && !hyphenprinted)
|
1041 |
fprintf(stdout, "--\n");
|
1042 |
|
1043 |
while (p < ptr)
|
1044 |
{
|
1045 |
int ellength;
|
1046 |
char *pp = p;
|
1047 |
if (printname != NULL) fprintf(stdout, "%s-", printname);
|
1048 |
if (number) fprintf(stdout, "%d-", linenumber - linecount--);
|
1049 |
pp = end_of_line(pp, endptr, &ellength);
|
1050 |
fwrite(p, 1, pp - p, stdout);
|
1051 |
p = pp;
|
1052 |
}
|
1053 |
}
|
1054 |
|
1055 |
/* Now print the matching line(s); ensure we set hyphenpending at the end
|
1056 |
of the file if any context lines are being output. */
|
1057 |
|
1058 |
if (after_context > 0 || before_context > 0)
|
1059 |
endhyphenpending = TRUE;
|
1060 |
|
1061 |
if (printname != NULL) fprintf(stdout, "%s:", printname);
|
1062 |
if (number) fprintf(stdout, "%d:", linenumber);
|
1063 |
|
1064 |
/* In multiline mode, we want to print to the end of the line in which
|
1065 |
the end of the matched string is found, so we adjust linelength and the
|
1066 |
line number appropriately. Because the PCRE_FIRSTLINE option is set, the
|
1067 |
start of the match will always be before the first newline sequence. */
|
1068 |
|
1069 |
if (multiline)
|
1070 |
{
|
1071 |
int ellength;
|
1072 |
char *endmatch = ptr + offsets[1];
|
1073 |
t = ptr;
|
1074 |
while (t < endmatch)
|
1075 |
{
|
1076 |
t = end_of_line(t, endptr, &ellength);
|
1077 |
if (t <= endmatch) linenumber++; else break;
|
1078 |
}
|
1079 |
endmatch = end_of_line(endmatch, endptr, &ellength);
|
1080 |
linelength = endmatch - ptr - ellength;
|
1081 |
}
|
1082 |
|
1083 |
/*** NOTE: Use only fwrite() to output the data line, so that binary
|
1084 |
zeroes are treated as just another data character. */
|
1085 |
|
1086 |
/* This extra option, for Jeffrey Friedl's debugging requirements,
|
1087 |
replaces the matched string, or a specific captured string if it exists,
|
1088 |
with X. When this happens, colouring is ignored. */
|
1089 |
|
1090 |
#ifdef JFRIEDL_DEBUG
|
1091 |
if (S_arg >= 0 && S_arg < mrc)
|
1092 |
{
|
1093 |
int first = S_arg * 2;
|
1094 |
int last = first + 1;
|
1095 |
fwrite(ptr, 1, offsets[first], stdout);
|
1096 |
fprintf(stdout, "X");
|
1097 |
fwrite(ptr + offsets[last], 1, linelength - offsets[last], stdout);
|
1098 |
}
|
1099 |
else
|
1100 |
#endif
|
1101 |
|
1102 |
/* We have to split the line(s) up if colouring. */
|
1103 |
|
1104 |
if (do_colour)
|
1105 |
{
|
1106 |
fwrite(ptr, 1, offsets[0], stdout);
|
1107 |
fprintf(stdout, "%c[%sm", 0x1b, colour_string);
|
1108 |
fwrite(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
|
1109 |
fprintf(stdout, "%c[00m", 0x1b);
|
1110 |
fwrite(ptr + offsets[1], 1, linelength - offsets[1], stdout);
|
1111 |
}
|
1112 |
else fwrite(ptr, 1, linelength + endlinelength, stdout);
|
1113 |
}
|
1114 |
|
1115 |
/* End of doing what has to be done for a match */
|
1116 |
|
1117 |
rc = 0; /* Had some success */
|
1118 |
|
1119 |
/* Remember where the last match happened for after_context. We remember
|
1120 |
where we are about to restart, and that line's number. */
|
1121 |
|
1122 |
lastmatchrestart = ptr + linelength + endlinelength;
|
1123 |
lastmatchnumber = linenumber + 1;
|
1124 |
}
|
1125 |
|
1126 |
/* Advance to after the newline and increment the line number. */
|
1127 |
|
1128 |
ptr += linelength + endlinelength;
|
1129 |
linenumber++;
|
1130 |
|
1131 |
/* If we haven't yet reached the end of the file (the buffer is full), and
|
1132 |
the current point is in the top 1/3 of the buffer, slide the buffer down by
|
1133 |
1/3 and refill it. Before we do this, if some unprinted "after" lines are
|
1134 |
about to be lost, print them. */
|
1135 |
|
1136 |
if (bufflength >= sizeof(buffer) && ptr > buffer + 2*MBUFTHIRD)
|
1137 |
{
|
1138 |
if (after_context > 0 &&
|
1139 |
lastmatchnumber > 0 &&
|
1140 |
lastmatchrestart < buffer + MBUFTHIRD)
|
1141 |
{
|
1142 |
do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);
|
1143 |
lastmatchnumber = 0;
|
1144 |
}
|
1145 |
|
1146 |
/* Now do the shuffle */
|
1147 |
|
1148 |
memmove(buffer, buffer + MBUFTHIRD, 2*MBUFTHIRD);
|
1149 |
ptr -= MBUFTHIRD;
|
1150 |
bufflength = 2*MBUFTHIRD + fread(buffer + 2*MBUFTHIRD, 1, MBUFTHIRD, in);
|
1151 |
endptr = buffer + bufflength;
|
1152 |
|
1153 |
/* Adjust any last match point */
|
1154 |
|
1155 |
if (lastmatchnumber > 0) lastmatchrestart -= MBUFTHIRD;
|
1156 |
}
|
1157 |
} /* Loop through the whole file */
|
1158 |
|
1159 |
/* End of file; print final "after" lines if wanted; do_after_lines sets
|
1160 |
hyphenpending if it prints something. */
|
1161 |
|
1162 |
if (!only_matching && !count_only)
|
1163 |
{
|
1164 |
do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);
|
1165 |
hyphenpending |= endhyphenpending;
|
1166 |
}
|
1167 |
|
1168 |
/* Print the file name if we are looking for those without matches and there
|
1169 |
were none. If we found a match, we won't have got this far. */
|
1170 |
|
1171 |
if (filenames == FN_NOMATCH_ONLY)
|
1172 |
{
|
1173 |
fprintf(stdout, "%s\n", printname);
|
1174 |
return 0;
|
1175 |
}
|
1176 |
|
1177 |
/* Print the match count if wanted */
|
1178 |
|
1179 |
if (count_only)
|
1180 |
{
|
1181 |
if (printname != NULL) fprintf(stdout, "%s:", printname);
|
1182 |
fprintf(stdout, "%d\n", count);
|
1183 |
}
|
1184 |
|
1185 |
return rc;
|
1186 |
}
|
1187 |
|
1188 |
|
1189 |
|
1190 |
/*************************************************
|
1191 |
* Grep a file or recurse into a directory *
|
1192 |
*************************************************/
|
1193 |
|
1194 |
/* Given a path name, if it's a directory, scan all the files if we are
|
1195 |
recursing; if it's a file, grep it.
|
1196 |
|
1197 |
Arguments:
|
1198 |
pathname the path to investigate
|
1199 |
dir_recurse TRUE if recursing is wanted (-r or -drecurse)
|
1200 |
only_one_at_top TRUE if the path is the only one at toplevel
|
1201 |
|
1202 |
Returns: 0 if there was at least one match
|
1203 |
1 if there were no matches
|
1204 |
2 there was some kind of error
|
1205 |
|
1206 |
However, file opening failures are suppressed if "silent" is set.
|
1207 |
*/
|
1208 |
|
1209 |
static int
|
1210 |
grep_or_recurse(char *pathname, BOOL dir_recurse, BOOL only_one_at_top)
|
1211 |
{
|
1212 |
int rc = 1;
|
1213 |
int sep;
|
1214 |
FILE *in;
|
1215 |
|
1216 |
/* If the file name is "-" we scan stdin */
|
1217 |
|
1218 |
if (strcmp(pathname, "-") == 0)
|
1219 |
{
|
1220 |
return pcregrep(stdin,
|
1221 |
(filenames > FN_DEFAULT || (filenames == FN_DEFAULT && !only_one_at_top))?
|
1222 |
stdin_name : NULL);
|
1223 |
}
|
1224 |
|
1225 |
|
1226 |
/* If the file is a directory, skip if skipping or if we are recursing, scan
|
1227 |
each file within it, subject to any include or exclude patterns that were set.
|
1228 |
The scanning code is localized so it can be made system-specific. */
|
1229 |
|
1230 |
if ((sep = isdirectory(pathname)) != 0)
|
1231 |
{
|
1232 |
if (dee_action == dee_SKIP) return 1;
|
1233 |
if (dee_action == dee_RECURSE)
|
1234 |
{
|
1235 |
char buffer[1024];
|
1236 |
char *nextfile;
|
1237 |
directory_type *dir = opendirectory(pathname);
|
1238 |
|
1239 |
if (dir == NULL)
|
1240 |
{
|
1241 |
if (!silent)
|
1242 |
fprintf(stderr, "pcregrep: Failed to open directory %s: %s\n", pathname,
|
1243 |
strerror(errno));
|
1244 |
return 2;
|
1245 |
}
|
1246 |
|
1247 |
while ((nextfile = readdirectory(dir)) != NULL)
|
1248 |
{
|
1249 |
int frc, blen;
|
1250 |
sprintf(buffer, "%.512s%c%.128s", pathname, sep, nextfile);
|
1251 |
blen = strlen(buffer);
|
1252 |
|
1253 |
if (exclude_compiled != NULL &&
|
1254 |
pcre_exec(exclude_compiled, NULL, buffer, blen, 0, 0, NULL, 0) >= 0)
|
1255 |
continue;
|
1256 |
|
1257 |
if (include_compiled != NULL &&
|
1258 |
pcre_exec(include_compiled, NULL, buffer, blen, 0, 0, NULL, 0) < 0)
|
1259 |
continue;
|
1260 |
|
1261 |
frc = grep_or_recurse(buffer, dir_recurse, FALSE);
|
1262 |
if (frc > 1) rc = frc;
|
1263 |
else if (frc == 0 && rc == 1) rc = 0;
|
1264 |
}
|
1265 |
|
1266 |
closedirectory(dir);
|
1267 |
return rc;
|
1268 |
}
|
1269 |
}
|
1270 |
|
1271 |
/* If the file is not a directory and not a regular file, skip it if that's
|
1272 |
been requested. */
|
1273 |
|
1274 |
else if (!isregfile(pathname) && DEE_action == DEE_SKIP) return 1;
|
1275 |
|
1276 |
/* Control reaches here if we have a regular file, or if we have a directory
|
1277 |
and recursion or skipping was not requested, or if we have anything else and
|
1278 |
skipping was not requested. The scan proceeds. If this is the first and only
|
1279 |
argument at top level, we don't show the file name, unless we are only showing
|
1280 |
the file name, or the filename was forced (-H). */
|
1281 |
|
1282 |
in = fopen(pathname, "r");
|
1283 |
if (in == NULL)
|
1284 |
{
|
1285 |
if (!silent)
|
1286 |
fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname,
|
1287 |
strerror(errno));
|
1288 |
return 2;
|
1289 |
}
|
1290 |
|
1291 |
rc = pcregrep(in, (filenames > FN_DEFAULT ||
|
1292 |
(filenames == FN_DEFAULT && !only_one_at_top))? pathname : NULL);
|
1293 |
|
1294 |
fclose(in);
|
1295 |
return rc;
|
1296 |
}
|
1297 |
|
1298 |
|
1299 |
|
1300 |
|
1301 |
/*************************************************
|
1302 |
* Usage function *
|
1303 |
*************************************************/
|
1304 |
|
1305 |
static int
|
1306 |
usage(int rc)
|
1307 |
{
|
1308 |
option_item *op;
|
1309 |
fprintf(stderr, "Usage: pcregrep [-");
|
1310 |
for (op = optionlist; op->one_char != 0; op++)
|
1311 |
{
|
1312 |
if (op->one_char > 0) fprintf(stderr, "%c", op->one_char);
|
1313 |
}
|
1314 |
fprintf(stderr, "] [long options] [pattern] [files]\n");
|
1315 |
fprintf(stderr, "Type `pcregrep --help' for more information.\n");
|
1316 |
return rc;
|
1317 |
}
|
1318 |
|
1319 |
|
1320 |
|
1321 |
|
1322 |
/*************************************************
|
1323 |
* Help function *
|
1324 |
*************************************************/
|
1325 |
|
1326 |
static void
|
1327 |
help(void)
|
1328 |
{
|
1329 |
option_item *op;
|
1330 |
|
1331 |
printf("Usage: pcregrep [OPTION]... [PATTERN] [FILE1 FILE2 ...]\n");
|
1332 |
printf("Search for PATTERN in each FILE or standard input.\n");
|
1333 |
printf("PATTERN must be present if neither -e nor -f is used.\n");
|
1334 |
printf("\"-\" can be used as a file name to mean STDIN.\n\n");
|
1335 |
printf("Example: pcregrep -i 'hello.*world' menu.h main.c\n\n");
|
1336 |
|
1337 |
printf("Options:\n");
|
1338 |
|
1339 |
for (op = optionlist; op->one_char != 0; op++)
|
1340 |
{
|
1341 |
int n;
|
1342 |
char s[4];
|
1343 |
if (op->one_char > 0) sprintf(s, "-%c,", op->one_char); else strcpy(s, " ");
|
1344 |
printf(" %s --%s%n", s, op->long_name, &n);
|
1345 |
n = 30 - n;
|
1346 |
if (n < 1) n = 1;
|
1347 |
printf("%.*s%s\n", n, " ", op->help_text);
|
1348 |
}
|
1349 |
|
1350 |
printf("\nWhen reading patterns from a file instead of using a command line option,\n");
|
1351 |
printf("trailing white space is removed and blank lines are ignored.\n");
|
1352 |
printf("There is a maximum of %d patterns.\n", MAX_PATTERN_COUNT);
|
1353 |
|
1354 |
printf("\nWith no FILEs, read standard input. If fewer than two FILEs given, assume -h.\n");
|
1355 |
printf("Exit status is 0 if any matches, 1 if no matches, and 2 if trouble.\n");
|
1356 |
}
|
1357 |
|
1358 |
|
1359 |
|
1360 |
|
1361 |
/*************************************************
|
1362 |
* Handle a single-letter, no data option *
|
1363 |
*************************************************/
|
1364 |
|
1365 |
static int
|
1366 |
handle_option(int letter, int options)
|
1367 |
{
|
1368 |
switch(letter)
|
1369 |
{
|
1370 |
case N_HELP: help(); exit(0);
|
1371 |
case 'c': count_only = TRUE; break;
|
1372 |
case 'F': process_options |= PO_FIXED_STRINGS; break;
|
1373 |
case 'H': filenames = FN_FORCE; break;
|
1374 |
case 'h': filenames = FN_NONE; break;
|
1375 |
case 'i': options |= PCRE_CASELESS; break;
|
1376 |
case 'l': filenames = FN_ONLY; break;
|
1377 |
case 'L': filenames = FN_NOMATCH_ONLY; break;
|
1378 |
case 'M': multiline = TRUE; options |= PCRE_MULTILINE|PCRE_FIRSTLINE; break;
|
1379 |
case 'n': number = TRUE; break;
|
1380 |
case 'o': only_matching = TRUE; break;
|
1381 |
case 'q': quiet = TRUE; break;
|
1382 |
case 'r': dee_action = dee_RECURSE; break;
|
1383 |
case 's': silent = TRUE; break;
|
1384 |
case 'u': options |= PCRE_UTF8; utf8 = TRUE; break;
|
1385 |
case 'v': invert = TRUE; break;
|
1386 |
case 'w': process_options |= PO_WORD_MATCH; break;
|
1387 |
case 'x': process_options |= PO_LINE_MATCH; break;
|
1388 |
|
1389 |
case 'V':
|
1390 |
fprintf(stderr, "pcregrep version %s\n", pcre_version());
|
1391 |
exit(0);
|
1392 |
break;
|
1393 |
|
1394 |
default:
|
1395 |
fprintf(stderr, "pcregrep: Unknown option -%c\n", letter);
|
1396 |
exit(usage(2));
|
1397 |
}
|
1398 |
|
1399 |
return options;
|
1400 |
}
|
1401 |
|
1402 |
|
1403 |
|
1404 |
|
1405 |
/*************************************************
|
1406 |
* Construct printed ordinal *
|
1407 |
*************************************************/
|
1408 |
|
1409 |
/* This turns a number into "1st", "3rd", etc. */
|
1410 |
|
1411 |
static char *
|
1412 |
ordin(int n)
|
1413 |
{
|
1414 |
static char buffer[8];
|
1415 |
char *p = buffer;
|
1416 |
sprintf(p, "%d", n);
|
1417 |
while (*p != 0) p++;
|
1418 |
switch (n%10)
|
1419 |
{
|
1420 |
case 1: strcpy(p, "st"); break;
|
1421 |
case 2: strcpy(p, "nd"); break;
|
1422 |
case 3: strcpy(p, "rd"); break;
|
1423 |
default: strcpy(p, "th"); break;
|
1424 |
}
|
1425 |
return buffer;
|
1426 |
}
|
1427 |
|
1428 |
|
1429 |
|
1430 |
/*************************************************
|
1431 |
* Compile a single pattern *
|
1432 |
*************************************************/
|
1433 |
|
1434 |
/* When the -F option has been used, this is called for each substring.
|
1435 |
Otherwise it's called for each supplied pattern.
|
1436 |
|
1437 |
Arguments:
|
1438 |
pattern the pattern string
|
1439 |
options the PCRE options
|
1440 |
filename the file name, or NULL for a command-line pattern
|
1441 |
count 0 if this is the only command line pattern, or
|
1442 |
number of the command line pattern, or
|
1443 |
linenumber for a pattern from a file
|
1444 |
|
1445 |
Returns: TRUE on success, FALSE after an error
|
1446 |
*/
|
1447 |
|
1448 |
static BOOL
|
1449 |
compile_single_pattern(char *pattern, int options, char *filename, int count)
|
1450 |
{
|
1451 |
char buffer[MBUFTHIRD + 16];
|
1452 |
const char *error;
|
1453 |
int errptr;
|
1454 |
|
1455 |
if (pattern_count >= MAX_PATTERN_COUNT)
|
1456 |
{
|
1457 |
fprintf(stderr, "pcregrep: Too many %spatterns (max %d)\n",
|
1458 |
(filename == NULL)? "command-line " : "", MAX_PATTERN_COUNT);
|
1459 |
return FALSE;
|
1460 |
}
|
1461 |
|
1462 |
sprintf(buffer, "%s%.*s%s", prefix[process_options], MBUFTHIRD, pattern,
|
1463 |
suffix[process_options]);
|
1464 |
pattern_list[pattern_count] =
|
1465 |
pcre_compile(buffer, options, &error, &errptr, pcretables);
|
1466 |
if (pattern_list[pattern_count] != NULL)
|
1467 |
{
|
1468 |
pattern_count++;
|
1469 |
return TRUE;
|
1470 |
}
|
1471 |
|
1472 |
/* Handle compile errors */
|
1473 |
|
1474 |
errptr -= (int)strlen(prefix[process_options]);
|
1475 |
if (errptr > (int)strlen(pattern)) errptr = (int)strlen(pattern);
|
1476 |
|
1477 |
if (filename == NULL)
|
1478 |
{
|
1479 |
if (count == 0)
|
1480 |
fprintf(stderr, "pcregrep: Error in command-line regex "
|
1481 |
"at offset %d: %s\n", errptr, error);
|
1482 |
else
|
1483 |
fprintf(stderr, "pcregrep: Error in %s command-line regex "
|
1484 |
"at offset %d: %s\n", ordin(count), errptr, error);
|
1485 |
}
|
1486 |
else
|
1487 |
{
|
1488 |
fprintf(stderr, "pcregrep: Error in regex in line %d of %s "
|
1489 |
"at offset %d: %s\n", count, filename, errptr, error);
|
1490 |
}
|
1491 |
|
1492 |
return FALSE;
|
1493 |
}
|
1494 |
|
1495 |
|
1496 |
|
1497 |
/*************************************************
|
1498 |
* Compile one supplied pattern *
|
1499 |
*************************************************/
|
1500 |
|
1501 |
/* When the -F option has been used, each string may be a list of strings,
|
1502 |
separated by line breaks. They will be matched literally.
|
1503 |
|
1504 |
Arguments:
|
1505 |
pattern the pattern string
|
1506 |
options the PCRE options
|
1507 |
filename the file name, or NULL for a command-line pattern
|
1508 |
count 0 if this is the only command line pattern, or
|
1509 |
number of the command line pattern, or
|
1510 |
linenumber for a pattern from a file
|
1511 |
|
1512 |
Returns: TRUE on success, FALSE after an error
|
1513 |
*/
|
1514 |
|
1515 |
static BOOL
|
1516 |
compile_pattern(char *pattern, int options, char *filename, int count)
|
1517 |
{
|
1518 |
if ((process_options & PO_FIXED_STRINGS) != 0)
|
1519 |
{
|
1520 |
char *eop = pattern + strlen(pattern);
|
1521 |
char buffer[MBUFTHIRD];
|
1522 |
for(;;)
|
1523 |
{
|
1524 |
int ellength;
|
1525 |
char *p = end_of_line(pattern, eop, &ellength);
|
1526 |
if (ellength == 0)
|
1527 |
return compile_single_pattern(pattern, options, filename, count);
|
1528 |
sprintf(buffer, "%.*s", (int)(p - pattern - ellength), pattern);
|
1529 |
pattern = p;
|
1530 |
if (!compile_single_pattern(buffer, options, filename, count))
|
1531 |
return FALSE;
|
1532 |
}
|
1533 |
}
|
1534 |
else return compile_single_pattern(pattern, options, filename, count);
|
1535 |
}
|
1536 |
|
1537 |
|
1538 |
|
1539 |
/*************************************************
|
1540 |
* Main program *
|
1541 |
*************************************************/
|
1542 |
|
1543 |
/* Returns 0 if something matched, 1 if nothing matched, 2 after an error. */
|
1544 |
|
1545 |
int
|
1546 |
main(int argc, char **argv)
|
1547 |
{
|
1548 |
int i, j;
|
1549 |
int rc = 1;
|
1550 |
int pcre_options = 0;
|
1551 |
int cmd_pattern_count = 0;
|
1552 |
int hint_count = 0;
|
1553 |
int errptr;
|
1554 |
BOOL only_one_at_top;
|
1555 |
char *patterns[MAX_PATTERN_COUNT];
|
1556 |
const char *locale_from = "--locale";
|
1557 |
const char *error;
|
1558 |
|
1559 |
/* Set the default line ending value from the default in the PCRE library;
|
1560 |
"lf", "cr", "crlf", and "any" are supported. Anything else is treated as "lf".
|
1561 |
*/
|
1562 |
|
1563 |
(void)pcre_config(PCRE_CONFIG_NEWLINE, &i);
|
1564 |
switch(i)
|
1565 |
{
|
1566 |
default: newline = (char *)"lf"; break;
|
1567 |
case '\r': newline = (char *)"cr"; break;
|
1568 |
case ('\r' << 8) | '\n': newline = (char *)"crlf"; break;
|
1569 |
case -1: newline = (char *)"any"; break;
|
1570 |
case -2: newline = (char *)"anycrlf"; break;
|
1571 |
}
|
1572 |
|
1573 |
/* Process the options */
|
1574 |
|
1575 |
for (i = 1; i < argc; i++)
|
1576 |
{
|
1577 |
option_item *op = NULL;
|
1578 |
char *option_data = (char *)""; /* default to keep compiler happy */
|
1579 |
BOOL longop;
|
1580 |
BOOL longopwasequals = FALSE;
|
1581 |
|
1582 |
if (argv[i][0] != '-') break;
|
1583 |
|
1584 |
/* If we hit an argument that is just "-", it may be a reference to STDIN,
|
1585 |
but only if we have previously had -e or -f to define the patterns. */
|
1586 |
|
1587 |
if (argv[i][1] == 0)
|
1588 |
{
|
1589 |
if (pattern_filename != NULL || pattern_count > 0) break;
|
1590 |
else exit(usage(2));
|
1591 |
}
|
1592 |
|
1593 |
/* Handle a long name option, or -- to terminate the options */
|
1594 |
|
1595 |
if (argv[i][1] == '-')
|
1596 |
{
|
1597 |
char *arg = argv[i] + 2;
|
1598 |
char *argequals = strchr(arg, '=');
|
1599 |
|
1600 |
if (*arg == 0) /* -- terminates options */
|
1601 |
{
|
1602 |
i++;
|
1603 |
break; /* out of the options-handling loop */
|
1604 |
}
|
1605 |
|
1606 |
longop = TRUE;
|
1607 |
|
1608 |
/* Some long options have data that follows after =, for example file=name.
|
1609 |
Some options have variations in the long name spelling: specifically, we
|
1610 |
allow "regexp" because GNU grep allows it, though I personally go along
|
1611 |
with Jeffrey Friedl and Larry Wall in preferring "regex" without the "p".
|
1612 |
These options are entered in the table as "regex(p)". No option is in both
|
1613 |
these categories, fortunately. */
|
1614 |
|
1615 |
for (op = optionlist; op->one_char != 0; op++)
|
1616 |
{
|
1617 |
char *opbra = strchr(op->long_name, '(');
|
1618 |
char *equals = strchr(op->long_name, '=');
|
1619 |
if (opbra == NULL) /* Not a (p) case */
|
1620 |
{
|
1621 |
if (equals == NULL) /* Not thing=data case */
|
1622 |
{
|
1623 |
if (strcmp(arg, op->long_name) == 0) break;
|
1624 |
}
|
1625 |
else /* Special case xxx=data */
|
1626 |
{
|
1627 |
int oplen = equals - op->long_name;
|
1628 |
int arglen = (argequals == NULL)? strlen(arg) : argequals - arg;
|
1629 |
if (oplen == arglen && strncmp(arg, op->long_name, oplen) == 0)
|
1630 |
{
|
1631 |
option_data = arg + arglen;
|
1632 |
if (*option_data == '=')
|
1633 |
{
|
1634 |
option_data++;
|
1635 |
longopwasequals = TRUE;
|
1636 |
}
|
1637 |
break;
|
1638 |
}
|
1639 |
}
|
1640 |
}
|
1641 |
else /* Special case xxxx(p) */
|
1642 |
{
|
1643 |
char buff1[24];
|
1644 |
char buff2[24];
|
1645 |
int baselen = opbra - op->long_name;
|
1646 |
sprintf(buff1, "%.*s", baselen, op->long_name);
|
1647 |
sprintf(buff2, "%s%.*s", buff1,
|
1648 |
(int)strlen(op->long_name) - baselen - 2, opbra + 1);
|
1649 |
if (strcmp(arg, buff1) == 0 || strcmp(arg, buff2) == 0)
|
1650 |
break;
|
1651 |
}
|
1652 |
}
|
1653 |
|
1654 |
if (op->one_char == 0)
|
1655 |
{
|
1656 |
fprintf(stderr, "pcregrep: Unknown option %s\n", argv[i]);
|
1657 |
exit(usage(2));
|
1658 |
}
|
1659 |
}
|
1660 |
|
1661 |
|
1662 |
/* Jeffrey Friedl's debugging harness uses these additional options which
|
1663 |
are not in the right form for putting in the option table because they use
|
1664 |
only one hyphen, yet are more than one character long. By putting them
|
1665 |
separately here, they will not get displayed as part of the help() output,
|
1666 |
but I don't think Jeffrey will care about that. */
|
1667 |
|
1668 |
#ifdef JFRIEDL_DEBUG
|
1669 |
else if (strcmp(argv[i], "-pre") == 0) {
|
1670 |
jfriedl_prefix = argv[++i];
|
1671 |
continue;
|
1672 |
} else if (strcmp(argv[i], "-post") == 0) {
|
1673 |
jfriedl_postfix = argv[++i];
|
1674 |
continue;
|
1675 |
} else if (strcmp(argv[i], "-XT") == 0) {
|
1676 |
sscanf(argv[++i], "%d", &jfriedl_XT);
|
1677 |
continue;
|
1678 |
} else if (strcmp(argv[i], "-XR") == 0) {
|
1679 |
sscanf(argv[++i], "%d", &jfriedl_XR);
|
1680 |
continue;
|
1681 |
}
|
1682 |
#endif
|
1683 |
|
1684 |
|
1685 |
/* One-char options; many that have no data may be in a single argument; we
|
1686 |
continue till we hit the last one or one that needs data. */
|
1687 |
|
1688 |
else
|
1689 |
{
|
1690 |
char *s = argv[i] + 1;
|
1691 |
longop = FALSE;
|
1692 |
while (*s != 0)
|
1693 |
{
|
1694 |
for (op = optionlist; op->one_char != 0; op++)
|
1695 |
{ if (*s == op->one_char) break; }
|
1696 |
if (op->one_char == 0)
|
1697 |
{
|
1698 |
fprintf(stderr, "pcregrep: Unknown option letter '%c' in \"%s\"\n",
|
1699 |
*s, argv[i]);
|
1700 |
exit(usage(2));
|
1701 |
}
|
1702 |
if (op->type != OP_NODATA || s[1] == 0)
|
1703 |
{
|
1704 |
option_data = s+1;
|
1705 |
break;
|
1706 |
}
|
1707 |
pcre_options = handle_option(*s++, pcre_options);
|
1708 |
}
|
1709 |
}
|
1710 |
|
1711 |
/* At this point we should have op pointing to a matched option. If the type
|
1712 |
is NO_DATA, it means that there is no data, and the option might set
|
1713 |
something in the PCRE options. */
|
1714 |
|
1715 |
if (op->type == OP_NODATA)
|
1716 |
{
|
1717 |
pcre_options = handle_option(op->one_char, pcre_options);
|
1718 |
continue;
|
1719 |
}
|
1720 |
|
1721 |
/* If the option type is OP_OP_STRING or OP_OP_NUMBER, it's an option that
|
1722 |
either has a value or defaults to something. It cannot have data in a
|
1723 |
separate item. At the moment, the only such options are "colo(u)r" and
|
1724 |
Jeffrey Friedl's special -S debugging option. */
|
1725 |
|
1726 |
if (*option_data == 0 &&
|
1727 |
(op->type == OP_OP_STRING || op->type == OP_OP_NUMBER))
|
1728 |
{
|
1729 |
switch (op->one_char)
|
1730 |
{
|
1731 |
case N_COLOUR:
|
1732 |
colour_option = (char *)"auto";
|
1733 |
break;
|
1734 |
#ifdef JFRIEDL_DEBUG
|
1735 |
case 'S':
|
1736 |
S_arg = 0;
|
1737 |
break;
|
1738 |
#endif
|
1739 |
}
|
1740 |
continue;
|
1741 |
}
|
1742 |
|
1743 |
/* Otherwise, find the data string for the option. */
|
1744 |
|
1745 |
if (*option_data == 0)
|
1746 |
{
|
1747 |
if (i >= argc - 1 || longopwasequals)
|
1748 |
{
|
1749 |
fprintf(stderr, "pcregrep: Data missing after %s\n", argv[i]);
|
1750 |
exit(usage(2));
|
1751 |
}
|
1752 |
option_data = argv[++i];
|
1753 |
}
|
1754 |
|
1755 |
/* If the option type is OP_PATLIST, it's the -e option, which can be called
|
1756 |
multiple times to create a list of patterns. */
|
1757 |
|
1758 |
if (op->type == OP_PATLIST)
|
1759 |
{
|
1760 |
if (cmd_pattern_count >= MAX_PATTERN_COUNT)
|
1761 |
{
|
1762 |
fprintf(stderr, "pcregrep: Too many command-line patterns (max %d)\n",
|
1763 |
MAX_PATTERN_COUNT);
|
1764 |
return 2;
|
1765 |
}
|
1766 |
patterns[cmd_pattern_count++] = option_data;
|
1767 |
}
|
1768 |
|
1769 |
/* Otherwise, deal with single string or numeric data values. */
|
1770 |
|
1771 |
else if (op->type != OP_NUMBER && op->type != OP_OP_NUMBER)
|
1772 |
{
|
1773 |
*((char **)op->dataptr) = option_data;
|
1774 |
}
|
1775 |
else
|
1776 |
{
|
1777 |
char *endptr;
|
1778 |
int n = strtoul(option_data, &endptr, 10);
|
1779 |
if (*endptr != 0)
|
1780 |
{
|
1781 |
if (longop)
|
1782 |
{
|
1783 |
char *equals = strchr(op->long_name, '=');
|
1784 |
int nlen = (equals == NULL)? (int)strlen(op->long_name) :
|
1785 |
equals - op->long_name;
|
1786 |
fprintf(stderr, "pcregrep: Malformed number \"%s\" after --%.*s\n",
|
1787 |
option_data, nlen, op->long_name);
|
1788 |
}
|
1789 |
else
|
1790 |
fprintf(stderr, "pcregrep: Malformed number \"%s\" after -%c\n",
|
1791 |
option_data, op->one_char);
|
1792 |
exit(usage(2));
|
1793 |
}
|
1794 |
*((int *)op->dataptr) = n;
|
1795 |
}
|
1796 |
}
|
1797 |
|
1798 |
/* Options have been decoded. If -C was used, its value is used as a default
|
1799 |
for -A and -B. */
|
1800 |
|
1801 |
if (both_context > 0)
|
1802 |
{
|
1803 |
if (after_context == 0) after_context = both_context;
|
1804 |
if (before_context == 0) before_context = both_context;
|
1805 |
}
|
1806 |
|
1807 |
/* If a locale has not been provided as an option, see if the LC_CTYPE or
|
1808 |
LC_ALL environment variable is set, and if so, use it. */
|
1809 |
|
1810 |
if (locale == NULL)
|
1811 |
{
|
1812 |
locale = getenv("LC_ALL");
|
1813 |
locale_from = "LCC_ALL";
|
1814 |
}
|
1815 |
|
1816 |
if (locale == NULL)
|
1817 |
{
|
1818 |
locale = getenv("LC_CTYPE");
|
1819 |
locale_from = "LC_CTYPE";
|
1820 |
}
|
1821 |
|
1822 |
/* If a locale has been provided, set it, and generate the tables the PCRE
|
1823 |
needs. Otherwise, pcretables==NULL, which causes the use of default tables. */
|
1824 |
|
1825 |
if (locale != NULL)
|
1826 |
{
|
1827 |
if (setlocale(LC_CTYPE, locale) == NULL)
|
1828 |
{
|
1829 |
fprintf(stderr, "pcregrep: Failed to set locale %s (obtained from %s)\n",
|
1830 |
locale, locale_from);
|
1831 |
return 2;
|
1832 |
}
|
1833 |
pcretables = pcre_maketables();
|
1834 |
}
|
1835 |
|
1836 |
/* Sort out colouring */
|
1837 |
|
1838 |
if (colour_option != NULL && strcmp(colour_option, "never") != 0)
|
1839 |
{
|
1840 |
if (strcmp(colour_option, "always") == 0) do_colour = TRUE;
|
1841 |
else if (strcmp(colour_option, "auto") == 0) do_colour = is_stdout_tty();
|
1842 |
else
|
1843 |
{
|
1844 |
fprintf(stderr, "pcregrep: Unknown colour setting \"%s\"\n",
|
1845 |
colour_option);
|
1846 |
return 2;
|
1847 |
}
|
1848 |
if (do_colour)
|
1849 |
{
|
1850 |
char *cs = getenv("PCREGREP_COLOUR");
|
1851 |
if (cs == NULL) cs = getenv("PCREGREP_COLOR");
|
1852 |
if (cs != NULL) colour_string = cs;
|
1853 |
}
|
1854 |
}
|
1855 |
|
1856 |
/* Interpret the newline type; the default settings are Unix-like. */
|
1857 |
|
1858 |
if (strcmp(newline, "cr") == 0 || strcmp(newline, "CR") == 0)
|
1859 |
{
|
1860 |
pcre_options |= PCRE_NEWLINE_CR;
|
1861 |
endlinetype = EL_CR;
|
1862 |
}
|
1863 |
else if (strcmp(newline, "lf") == 0 || strcmp(newline, "LF") == 0)
|
1864 |
{
|
1865 |
pcre_options |= PCRE_NEWLINE_LF;
|
1866 |
endlinetype = EL_LF;
|
1867 |
}
|
1868 |
else if (strcmp(newline, "crlf") == 0 || strcmp(newline, "CRLF") == 0)
|
1869 |
{
|
1870 |
pcre_options |= PCRE_NEWLINE_CRLF;
|
1871 |
endlinetype = EL_CRLF;
|
1872 |
}
|
1873 |
else if (strcmp(newline, "any") == 0 || strcmp(newline, "ANY") == 0)
|
1874 |
{
|
1875 |
pcre_options |= PCRE_NEWLINE_ANY;
|
1876 |
endlinetype = EL_ANY;
|
1877 |
}
|
1878 |
else if (strcmp(newline, "anycrlf") == 0 || strcmp(newline, "ANYCRLF") == 0)
|
1879 |
{
|
1880 |
pcre_options |= PCRE_NEWLINE_ANYCRLF;
|
1881 |
endlinetype = EL_ANYCRLF;
|
1882 |
}
|
1883 |
else
|
1884 |
{
|
1885 |
fprintf(stderr, "pcregrep: Invalid newline specifier \"%s\"\n", newline);
|
1886 |
return 2;
|
1887 |
}
|
1888 |
|
1889 |
/* Interpret the text values for -d and -D */
|
1890 |
|
1891 |
if (dee_option != NULL)
|
1892 |
{
|
1893 |
if (strcmp(dee_option, "read") == 0) dee_action = dee_READ;
|
1894 |
else if (strcmp(dee_option, "recurse") == 0) dee_action = dee_RECURSE;
|
1895 |
else if (strcmp(dee_option, "skip") == 0) dee_action = dee_SKIP;
|
1896 |
else
|
1897 |
{
|
1898 |
fprintf(stderr, "pcregrep: Invalid value \"%s\" for -d\n", dee_option);
|
1899 |
return 2;
|
1900 |
}
|
1901 |
}
|
1902 |
|
1903 |
if (DEE_option != NULL)
|
1904 |
{
|
1905 |
if (strcmp(DEE_option, "read") == 0) DEE_action = DEE_READ;
|
1906 |
else if (strcmp(DEE_option, "skip") == 0) DEE_action = DEE_SKIP;
|
1907 |
else
|
1908 |
{
|
1909 |
fprintf(stderr, "pcregrep: Invalid value \"%s\" for -D\n", DEE_option);
|
1910 |
return 2;
|
1911 |
}
|
1912 |
}
|
1913 |
|
1914 |
/* Check the values for Jeffrey Friedl's debugging options. */
|
1915 |
|
1916 |
#ifdef JFRIEDL_DEBUG
|
1917 |
if (S_arg > 9)
|
1918 |
{
|
1919 |
fprintf(stderr, "pcregrep: bad value for -S option\n");
|
1920 |
return 2;
|
1921 |
}
|
1922 |
if (jfriedl_XT != 0 || jfriedl_XR != 0)
|
1923 |
{
|
1924 |
if (jfriedl_XT == 0) jfriedl_XT = 1;
|
1925 |
if (jfriedl_XR == 0) jfriedl_XR = 1;
|
1926 |
}
|
1927 |
#endif
|
1928 |
|
1929 |
/* Get memory to store the pattern and hints lists. */
|
1930 |
|
1931 |
pattern_list = (pcre **)malloc(MAX_PATTERN_COUNT * sizeof(pcre *));
|
1932 |
hints_list = (pcre_extra **)malloc(MAX_PATTERN_COUNT * sizeof(pcre_extra *));
|
1933 |
|
1934 |
if (pattern_list == NULL || hints_list == NULL)
|
1935 |
{
|
1936 |
fprintf(stderr, "pcregrep: malloc failed\n");
|
1937 |
goto EXIT2;
|
1938 |
}
|
1939 |
|
1940 |
/* If no patterns were provided by -e, and there is no file provided by -f,
|
1941 |
the first argument is the one and only pattern, and it must exist. */
|
1942 |
|
1943 |
if (cmd_pattern_count == 0 && pattern_filename == NULL)
|
1944 |
{
|
1945 |
if (i >= argc) return usage(2);
|
1946 |
patterns[cmd_pattern_count++] = argv[i++];
|
1947 |
}
|
1948 |
|
1949 |
/* Compile the patterns that were provided on the command line, either by
|
1950 |
multiple uses of -e or as a single unkeyed pattern. */
|
1951 |
|
1952 |
for (j = 0; j < cmd_pattern_count; j++)
|
1953 |
{
|
1954 |
if (!compile_pattern(patterns[j], pcre_options, NULL,
|
1955 |
(j == 0 && cmd_pattern_count == 1)? 0 : j + 1))
|
1956 |
goto EXIT2;
|
1957 |
}
|
1958 |
|
1959 |
/* Compile the regular expressions that are provided in a file. */
|
1960 |
|
1961 |
if (pattern_filename != NULL)
|
1962 |
{
|
1963 |
int linenumber = 0;
|
1964 |
FILE *f;
|
1965 |
char *filename;
|
1966 |
char buffer[MBUFTHIRD];
|
1967 |
|
1968 |
if (strcmp(pattern_filename, "-") == 0)
|
1969 |
{
|
1970 |
f = stdin;
|
1971 |
filename = stdin_name;
|
1972 |
}
|
1973 |
else
|
1974 |
{
|
1975 |
f = fopen(pattern_filename, "r");
|
1976 |
if (f == NULL)
|
1977 |
{
|
1978 |
fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pattern_filename,
|
1979 |
strerror(errno));
|
1980 |
goto EXIT2;
|
1981 |
}
|
1982 |
filename = pattern_filename;
|
1983 |
}
|
1984 |
|
1985 |
while (fgets(buffer, MBUFTHIRD, f) != NULL)
|
1986 |
{
|
1987 |
char *s = buffer + (int)strlen(buffer);
|
1988 |
while (s > buffer && isspace((unsigned char)(s[-1]))) s--;
|
1989 |
*s = 0;
|
1990 |
linenumber++;
|
1991 |
if (buffer[0] == 0) continue; /* Skip blank lines */
|
1992 |
if (!compile_pattern(buffer, pcre_options, filename, linenumber))
|
1993 |
goto EXIT2;
|
1994 |
}
|
1995 |
|
1996 |
if (f != stdin) fclose(f);
|
1997 |
}
|
1998 |
|
1999 |
/* Study the regular expressions, as we will be running them many times */
|
2000 |
|
2001 |
for (j = 0; j < pattern_count; j++)
|
2002 |
{
|
2003 |
hints_list[j] = pcre_study(pattern_list[j], 0, &error);
|
2004 |
if (error != NULL)
|
2005 |
{
|
2006 |
char s[16];
|
2007 |
if (pattern_count == 1) s[0] = 0; else sprintf(s, " number %d", j);
|
2008 |
fprintf(stderr, "pcregrep: Error while studying regex%s: %s\n", s, error);
|
2009 |
goto EXIT2;
|
2010 |
}
|
2011 |
hint_count++;
|
2012 |
}
|
2013 |
|
2014 |
/* If there are include or exclude patterns, compile them. */
|
2015 |
|
2016 |
if (exclude_pattern != NULL)
|
2017 |
{
|
2018 |
exclude_compiled = pcre_compile(exclude_pattern, 0, &error, &errptr,
|
2019 |
pcretables);
|
2020 |
if (exclude_compiled == NULL)
|
2021 |
{
|
2022 |
fprintf(stderr, "pcregrep: Error in 'exclude' regex at offset %d: %s\n",
|
2023 |
errptr, error);
|
2024 |
goto EXIT2;
|
2025 |
}
|
2026 |
}
|
2027 |
|
2028 |
if (include_pattern != NULL)
|
2029 |
{
|
2030 |
include_compiled = pcre_compile(include_pattern, 0, &error, &errptr,
|
2031 |
pcretables);
|
2032 |
if (include_compiled == NULL)
|
2033 |
{
|
2034 |
fprintf(stderr, "pcregrep: Error in 'include' regex at offset %d: %s\n",
|
2035 |
errptr, error);
|
2036 |
goto EXIT2;
|
2037 |
}
|
2038 |
}
|
2039 |
|
2040 |
/* If there are no further arguments, do the business on stdin and exit. */
|
2041 |
|
2042 |
if (i >= argc)
|
2043 |
{
|
2044 |
rc = pcregrep(stdin, (filenames > FN_DEFAULT)? stdin_name : NULL);
|
2045 |
goto EXIT;
|
2046 |
}
|
2047 |
|
2048 |
/* Otherwise, work through the remaining arguments as files or directories.
|
2049 |
Pass in the fact that there is only one argument at top level - this suppresses
|
2050 |
the file name if the argument is not a directory and filenames are not
|
2051 |
otherwise forced. */
|
2052 |
|
2053 |
only_one_at_top = i == argc - 1; /* Catch initial value of i */
|
2054 |
|
2055 |
for (; i < argc; i++)
|
2056 |
{
|
2057 |
int frc = grep_or_recurse(argv[i], dee_action == dee_RECURSE,
|
2058 |
only_one_at_top);
|
2059 |
if (frc > 1) rc = frc;
|
2060 |
else if (frc == 0 && rc == 1) rc = 0;
|
2061 |
}
|
2062 |
|
2063 |
EXIT:
|
2064 |
if (pattern_list != NULL)
|
2065 |
{
|
2066 |
for (i = 0; i < pattern_count; i++) free(pattern_list[i]);
|
2067 |
free(pattern_list);
|
2068 |
}
|
2069 |
if (hints_list != NULL)
|
2070 |
{
|
2071 |
for (i = 0; i < hint_count; i++) free(hints_list[i]);
|
2072 |
free(hints_list);
|
2073 |
}
|
2074 |
return rc;
|
2075 |
|
2076 |
EXIT2:
|
2077 |
rc = 2;
|
2078 |
goto EXIT;
|
2079 |
}
|
2080 |
|
2081 |
/* End of pcregrep */
|