* #34826: android: add SDES support and pcre
diff --git a/jni/libpcre/pcregrep.c b/jni/libpcre/pcregrep.c
new file mode 100644
index 0000000..74a37c2
--- /dev/null
+++ b/jni/libpcre/pcregrep.c
@@ -0,0 +1,2742 @@
+/*************************************************
+* 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) 1997-2011 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 MAX_PATTERN_COUNT 100
+#define OFFSET_SIZE 99
+
+#if BUFSIZ > 8192
+#define PATBUFSIZE BUFSIZ
+#else
+#define PATBUFSIZE 8192
+#endif
+
+/* 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 };
+
+/* 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 *main_buffer = NULL;
+static char *newline = NULL;
+static char *pattern_filename = NULL;
+static char *stdin_name = (char *)"(standard input)";
+static char *locale = NULL;
+
+static const unsigned char *pcretables = NULL;
+
+static int pattern_count = 0;
+static pcre **pattern_list = NULL;
+static pcre_extra **hints_list = NULL;
+
+static char *include_pattern = NULL;
+static char *exclude_pattern = NULL;
+static char *include_dir_pattern = NULL;
+static char *exclude_dir_pattern = NULL;
+
+static pcre *include_compiled = NULL;
+static pcre *exclude_compiled = NULL;
+static pcre *include_dir_compiled = NULL;
+static pcre *exclude_dir_compiled = NULL;
+
+static int after_context = 0;
+static int before_context = 0;
+static int both_context = 0;
+static int bufthird = PCREGREP_BUFSIZE;
+static int bufsize = 3*PCREGREP_BUFSIZE;
+static int dee_action = dee_READ;
+static int DEE_action = DEE_READ;
+static int error_count = 0;
+static int filenames = FN_DEFAULT;
+static int only_matching = -1;
+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 silent = FALSE;
+static BOOL utf8 = FALSE;
+
+/* Structure for options and list of them */
+
+enum { OP_NODATA, OP_STRING, OP_OP_STRING, OP_NUMBER, OP_LONGNUMBER,
+ OP_OP_NUMBER, OP_PATLIST };
+
+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)
+
+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_NUMBER, 'B', &before_context, "before-context=number", "set number of prior context lines" },
+ { 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', NULL, "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_STRING, 'f', &pattern_filename, "file=path", "read patterns 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, "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_NUMBER, 'o', &only_matching, "only-matching=n", "show only the part of the line that matched" },
+ { OP_NODATA, 'q', NULL, "quiet", "suppress output, just set return code" },
+ { OP_NODATA, 'r', NULL, "recursive", "recursively scan sub-directories" },
+ { OP_STRING, N_EXCLUDE,&exclude_pattern, "exclude=pattern","exclude matching files when recursing" },
+ { OP_STRING, N_INCLUDE,&include_pattern, "include=pattern","include matching files when recursing" },
+ { OP_STRING, N_EXCLUDE_DIR,&exclude_dir_pattern, "exclude-dir=pattern","exclude matching directories when recursing" },
+ { OP_STRING, N_INCLUDE_DIR,&include_dir_pattern, "include-dir=pattern","include matching directories when recursing" },
+
+ /* 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_STRING, N_EXCLUDE_DIR,&exclude_dir_pattern, "exclude_dir=pattern","exclude matching directories when recursing" },
+ { OP_STRING, N_INCLUDE_DIR,&include_dir_pattern, "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. */
+
+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);
+}
+
+
+/*************************************************
+* 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;
+
+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)? '/' : 0;
+}
+
+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;
+
+int
+isdirectory(char *filename)
+{
+DWORD attr = GetFileAttributes(filename);
+if (attr == INVALID_FILE_ATTRIBUTES)
+ return 0;
+return ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) ? '/' : 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
+
+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 */
+
+
+
+/*************************************************
+* 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 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 0x0a: /* LF */
+ *lenptr = 1;
+ return p;
+
+ case 0x0d: /* CR */
+ if (p < endptr && *p == 0x0a)
+ {
+ *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 0x0a: /* LF */
+ case 0x0b: /* VT */
+ case 0x0c: /* FF */
+ *lenptr = 1;
+ return p;
+
+ case 0x0d: /* CR */
+ if (p < endptr && *p == 0x0a)
+ {
+ *lenptr = 2;
+ p++;
+ }
+ else *lenptr = 1;
+ return p;
+
+ case 0x85: /* NEL */
+ *lenptr = utf8? 2 : 1;
+ return p;
+
+ case 0x2028: /* LS */
+ case 0x2029: /* PS */
+ *lenptr = 3;
+ return p;
+
+ 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 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 0x0a: /* LF */
+ case 0x0d: /* CR */
+ return p;
+
+ default:
+ break;
+ }
+
+ else switch (c)
+ {
+ case 0x0a: /* LF */
+ case 0x0b: /* VT */
+ case 0x0c: /* FF */
+ case 0x0d: /* CR */
+ case 0x85: /* NEL */
+ case 0x2028: /* LS */
+ case 0x2029: /* PS */
+ 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;
+const char *msg = "this text:\n\n";
+if (slen > 200)
+ {
+ slen = 200;
+ msg = "text that starts:\n\n";
+ }
+for (i = 0; i < pattern_count; i++)
+ {
+ *mrc = pcre_exec(pattern_list[i], hints_list[i], 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 (pattern_count > 1) fprintf(stderr, "pattern number %d to ", i+1);
+ 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 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. */
+
+#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;
+
+/* 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(pattern_list[0], hints_list[0], 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 the -o option (only_matching) is set,
+ in order to find any further matches in the same line. */
+
+ 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++;
+
+ /* 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, or a
+ captured portion of it, as long as this string is not empty, and the
+ --file-offsets and --line-offsets options output offsets for the matching
+ substring (they both force --only-matching = 0). None of these 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 (only_matching >= 0)
+ {
+ if (!invert)
+ {
+ if (printname != NULL) fprintf(stdout, "%s:", printname);
+ if (number) fprintf(stdout, "%d:", linenumber);
+ if (line_offsets)
+ fprintf(stdout, "%d,%d\n", (int)(matchptr + offsets[0] - ptr),
+ offsets[1] - offsets[0]);
+ else if (file_offsets)
+ fprintf(stdout, "%d,%d\n",
+ (int)(filepos + matchptr + offsets[0] - ptr),
+ offsets[1] - offsets[0]);
+ else if (only_matching < mrc)
+ {
+ int plen = offsets[2*only_matching + 1] - offsets[2*only_matching];
+ if (plen > 0)
+ {
+ if (do_colour) fprintf(stdout, "%c[%sm", 0x1b, colour_string);
+ FWRITE(matchptr + offsets[only_matching*2], 1, plen, stdout);
+ if (do_colour) fprintf(stdout, "%c[00m", 0x1b);
+ fprintf(stdout, "\n");
+ }
+ }
+ else if (printname != NULL || number) fprintf(stdout, "\n");
+ 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 (only_matching < 0 && !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: 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 sep;
+int frtype;
+int pathlen;
+void *handle;
+FILE *in = NULL; /* Ensure initialized */
+
+#ifdef SUPPORT_LIBZ
+gzFile ingz = NULL;
+#endif
+
+#ifdef SUPPORT_LIBBZ2
+BZFILE *inbz2 = NULL;
+#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);
+ }
+
+/* If the file is a directory, skip if skipping or if we are recursing, scan
+each file and directory within it, subject to any include or exclude patterns
+that were set. The scanning code is localized so it can be made
+system-specific. */
+
+if ((sep = isdirectory(pathname)) != 0)
+ {
+ if (dee_action == dee_SKIP) 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, nflen;
+ sprintf(buffer, "%.512s%c%.128s", pathname, sep, nextfile);
+ nflen = (int)(strlen(nextfile));
+
+ if (isdirectory(buffer))
+ {
+ if (exclude_dir_compiled != NULL &&
+ pcre_exec(exclude_dir_compiled, NULL, nextfile, nflen, 0, 0, NULL, 0) >= 0)
+ continue;
+
+ if (include_dir_compiled != NULL &&
+ pcre_exec(include_dir_compiled, NULL, nextfile, nflen, 0, 0, NULL, 0) < 0)
+ continue;
+ }
+ else
+ {
+ if (exclude_compiled != NULL &&
+ pcre_exec(exclude_compiled, NULL, nextfile, nflen, 0, 0, NULL, 0) >= 0)
+ continue;
+
+ if (include_compiled != NULL &&
+ pcre_exec(include_compiled, NULL, nextfile, nflen, 0, 0, NULL, 0) < 0)
+ continue;
+ }
+
+ 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. */
+
+else if (!isregfile(pathname) && DEE_action == DEE_SKIP) 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). */
+
+pathlen = (int)(strlen(pathname));
+
+/* 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;
+}
+
+
+
+
+/*************************************************
+* 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) 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 from a file instead of using a command line option,\n");
+printf("trailing white space is removed and blank lines are ignored.\n");
+printf("There is a maximum of %d patterns, each of maximum size %d bytes.\n",
+ MAX_PATTERN_COUNT, PATBUFSIZE);
+
+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");
+}
+
+
+
+
+/*************************************************
+* 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 'c': count_only = TRUE; break;
+ case 'F': process_options |= PO_FIXED_STRINGS; break;
+ case 'H': filenames = FN_FORCE; 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 = 0; 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(stderr, "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 *
+*************************************************/
+
+/* When the -F option has been used, this is called for each substring.
+Otherwise it's called for each supplied pattern.
+
+Arguments:
+ pattern the pattern string
+ options the PCRE options
+ filename the file name, or NULL for a command-line pattern
+ 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_single_pattern(char *pattern, int options, char *filename, int count)
+{
+char buffer[PATBUFSIZE];
+const char *error;
+int errptr;
+
+if (pattern_count >= MAX_PATTERN_COUNT)
+ {
+ fprintf(stderr, "pcregrep: Too many %spatterns (max %d)\n",
+ (filename == NULL)? "command-line " : "", MAX_PATTERN_COUNT);
+ return FALSE;
+ }
+
+sprintf(buffer, "%s%.*s%s", prefix[process_options], bufthird, pattern,
+ suffix[process_options]);
+pattern_list[pattern_count] =
+ pcre_compile(buffer, options, &error, &errptr, pcretables);
+if (pattern_list[pattern_count] != NULL)
+ {
+ pattern_count++;
+ return TRUE;
+ }
+
+/* Handle compile errors */
+
+errptr -= (int)strlen(prefix[process_options]);
+if (errptr > (int)strlen(pattern)) errptr = (int)strlen(pattern);
+
+if (filename == NULL)
+ {
+ if (count == 0)
+ fprintf(stderr, "pcregrep: Error in command-line regex "
+ "at offset %d: %s\n", errptr, error);
+ else
+ fprintf(stderr, "pcregrep: Error in %s command-line regex "
+ "at offset %d: %s\n", ordin(count), errptr, error);
+ }
+else
+ {
+ fprintf(stderr, "pcregrep: Error in regex in line %d of %s "
+ "at offset %d: %s\n", count, filename, errptr, error);
+ }
+
+return FALSE;
+}
+
+
+
+/*************************************************
+* Compile one supplied pattern *
+*************************************************/
+
+/* When the -F option has been used, each string may be a list of strings,
+separated by line breaks. They will be matched literally.
+
+Arguments:
+ pattern the pattern string
+ options the PCRE options
+ filename the file name, or NULL for a command-line pattern
+ 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(char *pattern, int options, char *filename, int count)
+{
+if ((process_options & PO_FIXED_STRINGS) != 0)
+ {
+ char *eop = pattern + strlen(pattern);
+ char buffer[PATBUFSIZE];
+ for(;;)
+ {
+ int ellength;
+ char *p = end_of_line(pattern, eop, &ellength);
+ if (ellength == 0)
+ return compile_single_pattern(pattern, options, filename, count);
+ sprintf(buffer, "%.*s", (int)(p - pattern - ellength), pattern);
+ pattern = p;
+ if (!compile_single_pattern(buffer, options, filename, count))
+ return FALSE;
+ }
+ }
+else return compile_single_pattern(pattern, options, filename, count);
+}
+
+
+
+/*************************************************
+* 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;
+int pcre_options = 0;
+int cmd_pattern_count = 0;
+int hint_count = 0;
+int errptr;
+BOOL only_one_at_top;
+char *patterns[MAX_PATTERN_COUNT];
+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_filename != NULL || pattern_count > 0) 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));
+ }
+
+ /* Check for a single-character option that has data: OP_OP_NUMBER
+ is used for one that either has 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. */
+
+ option_data = s+1;
+ if (op->type == OP_OP_NUMBER)
+ {
+ if (isdigit((unsigned char)s[1])) break;
+ }
+ else /* Check for end or a dataless option */
+ {
+ if (op->type != OP_NODATA || s[1] == 0) 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, 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))
+ {
+ switch (op->one_char)
+ {
+ case N_COLOUR:
+ colour_option = (char *)"auto";
+ break;
+
+ case 'o':
+ only_matching = 0;
+ 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_PATLIST, it's the -e option, which can be called
+ multiple times to create a list of patterns. */
+
+ if (op->type == OP_PATLIST)
+ {
+ if (cmd_pattern_count >= MAX_PATTERN_COUNT)
+ {
+ fprintf(stderr, "pcregrep: Too many command-line patterns (max %d)\n",
+ MAX_PATTERN_COUNT);
+ return 2;
+ }
+ patterns[cmd_pattern_count++] = option_data;
+ }
+
+ /* Otherwise, deal with single string or numeric data values. */
+
+ else if (op->type != OP_NUMBER && op->type != OP_LONGNUMBER &&
+ op->type != OP_OP_NUMBER)
+ {
+ *((char **)op->dataptr) = option_data;
+ }
+
+ /* Avoid the use of strtoul() because SunOS4 doesn't have it. This is used
+ only for unpicking arguments, so just keep it simple. */
+
+ else
+ {
+ 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)
+ {
+ 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));
+ }
+ 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, the latter two set only_matching. */
+
+if ((only_matching >= 0 && (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 (file_offsets || line_offsets) only_matching = 0;
+
+/* 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, and to store the pattern and hints lists. */
+
+bufsize = 3*bufthird;
+main_buffer = (char *)malloc(bufsize);
+pattern_list = (pcre **)malloc(MAX_PATTERN_COUNT * sizeof(pcre *));
+hints_list = (pcre_extra **)malloc(MAX_PATTERN_COUNT * sizeof(pcre_extra *));
+
+if (main_buffer == NULL || pattern_list == NULL || hints_list == NULL)
+ {
+ fprintf(stderr, "pcregrep: malloc failed\n");
+ goto EXIT2;
+ }
+
+/* If no patterns were provided by -e, and there is no file provided by -f,
+the first argument is the one and only pattern, and it must exist. */
+
+if (cmd_pattern_count == 0 && pattern_filename == NULL)
+ {
+ if (i >= argc) return usage(2);
+ patterns[cmd_pattern_count++] = argv[i++];
+ }
+
+/* Compile the patterns that were provided on the command line, either by
+multiple uses of -e or as a single unkeyed pattern. */
+
+for (j = 0; j < cmd_pattern_count; j++)
+ {
+ if (!compile_pattern(patterns[j], pcre_options, NULL,
+ (j == 0 && cmd_pattern_count == 1)? 0 : j + 1))
+ goto EXIT2;
+ }
+
+/* Compile the regular expressions that are provided in a file. */
+
+if (pattern_filename != NULL)
+ {
+ int linenumber = 0;
+ FILE *f;
+ char *filename;
+ char buffer[PATBUFSIZE];
+
+ if (strcmp(pattern_filename, "-") == 0)
+ {
+ f = stdin;
+ filename = stdin_name;
+ }
+ else
+ {
+ f = fopen(pattern_filename, "r");
+ if (f == NULL)
+ {
+ fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pattern_filename,
+ strerror(errno));
+ goto EXIT2;
+ }
+ filename = pattern_filename;
+ }
+
+ 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 */
+ if (!compile_pattern(buffer, pcre_options, filename, linenumber))
+ goto EXIT2;
+ }
+
+ if (f != stdin) fclose(f);
+ }
+
+/* Study the regular expressions, as we will be running them many times. 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 = 0; j < pattern_count; j++)
+ {
+ hints_list[j] = pcre_study(pattern_list[j], study_options, &error);
+ if (error != NULL)
+ {
+ char s[16];
+ if (pattern_count == 1) s[0] = 0; else sprintf(s, " number %d", j);
+ fprintf(stderr, "pcregrep: Error while studying regex%s: %s\n", s, error);
+ goto EXIT2;
+ }
+ hint_count++;
+#ifdef SUPPORT_PCREGREP_JIT
+ if (jit_stack != NULL && hints_list[j] != NULL)
+ pcre_assign_jit_stack(hints_list[j], NULL, jit_stack);
+#endif
+ }
+
+/* If --match-limit or --recursion-limit was set, put the value(s) into the
+pcre_extra block for each pattern. */
+
+if (match_limit > 0 || match_limit_recursion > 0)
+ {
+ for (j = 0; j < pattern_count; j++)
+ {
+ if (hints_list[j] == NULL)
+ {
+ hints_list[j] = malloc(sizeof(pcre_extra));
+ if (hints_list[j] == NULL)
+ {
+ fprintf(stderr, "pcregrep: malloc failed\n");
+ pcregrep_exit(2);
+ }
+ }
+ if (match_limit > 0)
+ {
+ hints_list[j]->flags |= PCRE_EXTRA_MATCH_LIMIT;
+ hints_list[j]->match_limit = match_limit;
+ }
+ if (match_limit_recursion > 0)
+ {
+ hints_list[j]->flags |= PCRE_EXTRA_MATCH_LIMIT_RECURSION;
+ hints_list[j]->match_limit_recursion = match_limit_recursion;
+ }
+ }
+ }
+
+/* If there are include or exclude patterns, compile them. */
+
+if (exclude_pattern != NULL)
+ {
+ exclude_compiled = pcre_compile(exclude_pattern, 0, &error, &errptr,
+ pcretables);
+ if (exclude_compiled == NULL)
+ {
+ fprintf(stderr, "pcregrep: Error in 'exclude' regex at offset %d: %s\n",
+ errptr, error);
+ goto EXIT2;
+ }
+ }
+
+if (include_pattern != NULL)
+ {
+ include_compiled = pcre_compile(include_pattern, 0, &error, &errptr,
+ pcretables);
+ if (include_compiled == NULL)
+ {
+ fprintf(stderr, "pcregrep: Error in 'include' regex at offset %d: %s\n",
+ errptr, error);
+ goto EXIT2;
+ }
+ }
+
+if (exclude_dir_pattern != NULL)
+ {
+ exclude_dir_compiled = pcre_compile(exclude_dir_pattern, 0, &error, &errptr,
+ pcretables);
+ if (exclude_dir_compiled == NULL)
+ {
+ fprintf(stderr, "pcregrep: Error in 'exclude_dir' regex at offset %d: %s\n",
+ errptr, error);
+ goto EXIT2;
+ }
+ }
+
+if (include_dir_pattern != NULL)
+ {
+ include_dir_compiled = pcre_compile(include_dir_pattern, 0, &error, &errptr,
+ pcretables);
+ if (include_dir_compiled == NULL)
+ {
+ fprintf(stderr, "pcregrep: Error in 'include_dir' regex at offset %d: %s\n",
+ errptr, error);
+ goto EXIT2;
+ }
+ }
+
+/* If there are no further arguments, do the business on stdin and exit. */
+
+if (i >= argc)
+ {
+ rc = pcregrep(stdin, FR_PLAIN, stdin_name,
+ (filenames > FN_DEFAULT)? stdin_name : NULL);
+ goto EXIT;
+ }
+
+/* Otherwise, work through the remaining arguments as files or directories.
+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; /* Catch initial value of i */
+
+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);
+if (pattern_list != NULL)
+ {
+ for (i = 0; i < pattern_count; i++) free(pattern_list[i]);
+ free(pattern_list);
+ }
+if (hints_list != NULL)
+ {
+ for (i = 0; i < hint_count; i++)
+ {
+ if (hints_list[i] != NULL) pcre_free_study(hints_list[i]);
+ }
+ free(hints_list);
+ }
+pcregrep_exit(rc);
+
+EXIT2:
+rc = 2;
+goto EXIT;
+}
+
+/* End of pcregrep */