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fastjar
[pf3gnuchains/gcc-fork.git] / fastjar / jargrep.c
diff --git a/fastjar/jargrep.c b/fastjar/jargrep.c
deleted file mode 100644 (file)
index 99f4df2..0000000
+++ /dev/null
@@ -1,791 +0,0 @@
-/*
-  jargrep.c - main functions for jargrep utility
-  Copyright (C) 2002, 2003, 2006 Free Software Foundation
-  Copyright (C) 1999, 2000 Bryan Burns
-  Copyright (C) 2000 Cory Hollingsworth 
-  Parts of this program are base on Bryan Burns work with fastjar 
-  Copyright (C) 1999. 
-
-  This program is free software; you can redistribute it and/or
-  modify it under the terms of the GNU General Public License
-  as published by the Free Software Foundation; either version 2
-  of the License, or (at your option) any later version.
-  
-  This program is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  GNU General Public License for more details.
-  
-  You should have received a copy of the GNU General Public License
-  along with this program; if not, write to the Free Software
-  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-*/
-
-/* Id: jargrep.c,v 1.5 2002/01/03 04:57:56 rodrigc Exp
-
-Log: jargrep.c,v 
-Revision 1.5  2002/01/03 04:57:56  rodrigc
-2001-01-02  Craig Rodrigues  <rodrigc@gcc.gnu.org>
-
-        PR bootstrap/5117
-        * configure.in (AC_CHECK_HEADERS): Check for stdlib.h.
-        * Makefile.am: Move grepjar to bin_PROGRAMS.
-        * config.h.in: Regenerated.
-        * Makefile.in: Regenerated.
-        * aclocal.m4: Regenerated.
-        * jargrep.c: Eliminate some signed/unsigned and default
-        uninitialized warnings. Use HAVE_STDLIB_H instead of
-        STDC_HEADERS macro.
-        * jartool.c: Likewise.
-        * compress.c: Likewise.
-
-Revision 1.4  2000/12/15 18:45:09  tromey
-       * jargrep.c: Include getopt.h if it exists.
-       (optind): Declare.
-       * configure, config.h: Rebuilt.
-       * configure.in: Check for getopt.h.
-
-Revision 1.3  2000/12/14 18:45:35  ghazi
-Warning fixes:
-
-       * compress.c: Include stdlib.h and compress.h.
-       (rcsid): Delete.
-       (report_str_error): Make static.
-       (ez_inflate_str): Delete unused variable.  Add parens in if-stmt.
-       (hrd_inflate_str): Likewise.
-
-       * compress.h (init_compression, end_compression, init_inflation,
-       end_inflation): Prototype void arguments.
-
-       * dostime.c (rcsid): Delete.
-
-       * jargrep.c: Include ctype.h, stdlib.h, zlib.h and compress.h.
-       Make functions static.  Cast ctype function argument to `unsigned
-       char'.  Add parens in if-stmts.  Constify.
-       (Usage): Change into a macro.
-       (jargrep): Remove unused parameter.
-
-       * jartool.c: Constify.  Add parens in if-stmts.  Align
-       signed/unsigned char pointers in functions calls using casts.
-       (rcsid): Delete.
-       (list_jar): Fix printf format specifier.
-       (usage): Chop long string into bits.  Reformat.
-
-       * pushback.c (rcsid): Delete.
-
-Revision 1.2  2000/12/11 02:59:55  apbianco
-2000-12-10  Robert Lipe <robertlipe@usa.net>
-
-       * jargrep.c (jargrep): Added null statement after case.
-
-2000-12-10  Alexandre Petit-Bianco  <apbianco@cygnus.com>
-
-       * Makefile: Removed.
-       * Makefile.in: Rebuilt with `-i' and `--enable-foreign'.
-
-(http://gcc.gnu.org/ml/gcc/2000-12/msg00294.html)
-
-Revision 1.1  2000/12/09 03:08:23  apbianco
-2000-12-08  Alexandre Petit-Bianco  <apbianco@cygnus.com>
-
-        * fastjar: Imported.
-
-Revision 1.8  2000/09/13 14:02:02  cory
-Reformatted some of the code to more closly match the layout of the orriginal
-fastjar utility.
-
-Revision 1.7  2000/09/12 22:29:36  cory
-Jargrep now seems to do what I want it to do.  Performs properly on Linux x86,
-will test some other platforms later.
-
-
-*/
-
-#include "config.h"
-#include <stdio.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <ctype.h>
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-
-#include "xregex.h"
-
-#include "jargrep.h"
-#include "jartool.h"
-#include "pushback.h"
-#include "zipfile.h"
-#include "zlib.h"
-#include "compress.h"
-#include <getopt.h>
-
-void version(void);
-void help(const char *name);
-
-#define Usage "Usage: %s [-bcinsVw] [--version|--help] <-e PATTERN | PATTERN> FILE ...\n"
-
-/*
-Function name: opt_valid
-arg:   options Bitfield flag that contains the command line options of grepjar.
-purpose:       To guard agains the occurance of certain incompatible flags being used
-together.
-returns: TRUE if options are valid, FALSE otherwise.
-*/
-
-static int opt_valid(int options) {
-       int retflag;
-
-       if((options & JG_PRINT_COUNT) && 
-               (options & (JG_PRINT_BYTEOFFSET | JG_PRINT_LINE_NUMBER)))
-       {
-               retflag = FALSE;
-       }
-       else retflag = TRUE;
-
-       return retflag;
-}
-
-/*
-Function name: create_regexp
-args:  regstr  String containing the uncompiled regular expression.  This may be the 
-                               expression as is passed in through argv.
-               options This is the flag containing the commandline options that have been
-                               parsed by getopt.
-purpose: Handle the exception handling involved with setting upt a new regular 
-expression.
-returns: Newly allocated compile regular expression ready to be used in an regexec call.
-*/
-
-static regex_t *create_regexp(const char *regstr, int options) {
-       regex_t *exp;
-       int errcode;
-       int msgsize;
-       char *errmsg;
-
-       if((exp = (regex_t *) malloc(sizeof(regex_t))))
-       {
-               if((errcode = regcomp(exp, regstr, (options & JG_IGNORE_CASE) ? REG_ICASE : 0))) {
-                       fprintf(stderr, "regcomp of regex failed,\n");
-                       if((errmsg = (char *) malloc(msgsize = regerror(errcode, exp, NULL, 0) + 1))) {
-                               regerror(errcode, exp, errmsg, msgsize);
-                               fprintf(stderr, "Error: %s\n", errmsg);
-                               free(exp);
-                               free(errmsg);
-                               exit(1);
-                       }
-                       else {
-                               fprintf(stderr, "Malloc of errmsg failed.\n");
-                               fprintf(stderr, "Error: %s\n", strerror(errno));
-                               free(exp);
-                               exit(1);
-                       }
-               }
-       }
-       else {
-               fprintf(stderr, "Malloc of regex failed,\n");
-               fprintf(stderr, "Error: %s\n", strerror(errno));
-               exit(1);
-       }
-
-       return exp; 
-}
-
-/*
-Function name: check_sig
-args:  scratch Pointer to array of bytes containing signature.
-               pbf             Pointer to push back handle for jar file.
-purpose:       Verify that checksum is correct.
-returns: 0, 1, or 2.  0 means we are ready to read embedded file information.  1 means
-we have read beyound the embedded file list and can exit knowing we have read all the
-relevent information.  2 means we still haven't reached embdedded file list and need to
-do some more reading.
-*/
-static int check_sig(ub1 *scratch, pb_file *pbfp) {
-       ub4 signature;
-       int retflag = 0;
-
-       signature = UNPACK_UB4(scratch, 0);
-
-#ifdef DEBUG    
-    printf("signature is %x\n", signature);
-#endif
-    if(signature == 0x08074b50){
-#ifdef DEBUG    
-      printf("skipping data descriptor\n");
-#endif
-      pb_read(pbfp, scratch, 12);
-      retflag = 2;
-    } else if(signature == 0x02014b50){
-#ifdef DEBUG    
-      printf("Central header reached.. we're all done!\n");
-#endif
-      retflag = 1;
-    }else if(signature != 0x04034b50){
-      printf("Ick! %#x\n", signature);
-      retflag = 1;
-    }
-    
-       return retflag;
-}
-
-/*
-Function name: decd_siz
-args   csize           Pointer to embedded file's compressed size.
-               usize           Pointer to embedded file's uncmpressed size.
-               fnlen           Pointer to embedded file's file name length.
-               elfen           Pointer to length of extra fields in jar file.
-               flags           Pointer to bitmapped flags.
-               method          Pointer to indicator of storage method of embedded file.
-               file_header     Pointer to string containing the above values to be unbacked.
-Purpose: Unpack the series of values from file_header.
-*/
-
-static void decd_siz(ub4 *csize, ub4 *usize, ub2 *fnlen, ub2 *eflen, ub2 *flags, ub2 *method, ub1 *file_header) {
-    *csize = UNPACK_UB4(file_header, LOC_CSIZE);
-#ifdef DEBUG    
-    printf("Compressed size is %u\n", *csize);
-#endif
-
-       *usize = UNPACK_UB4(file_header, LOC_USIZE);
-#ifdef DEBUG
-       printf("Uncompressed size is %u\n", *usize);
-#endif
-
-    *fnlen = UNPACK_UB2(file_header, LOC_FNLEN);
-#ifdef DEBUG    
-    printf("Filename length is %hu\n", *fnlen);
-#endif
-
-    *eflen = UNPACK_UB2(file_header, LOC_EFLEN);
-#ifdef DEBUG    
-    printf("Extra field length is %hu\n", *eflen);
-#endif
-
-    *flags = UNPACK_UB2(file_header, LOC_EXTRA);
-#ifdef DEBUG    
-    printf("Flags are %#hx\n", *flags);
-#endif
-
-    *method = UNPACK_UB2(file_header, LOC_COMP);
-#ifdef DEBUG
-    printf("Compression method is %#hx\n", *method);
-#endif
-
-}
-
-/*
-Function name: new_filename
-args:  pbf             Pointer to push back file handle.  Used for reading input file.
-               len             Length of file name to be read.
-purpose:       Read in the embedded file name from jar file.
-returns: Pointer to newly allocated string containing file name.
-*/
-
-static char *new_filename(pb_file *pbf, ub4 len) {
-       char *filename;
-
-       if(!(filename = (char *) malloc(len + 1))) {
-               fprintf(stderr, "Malloc failed of filename\n");
-               fprintf(stderr, "Error: %s\n", strerror(errno));
-       }
-    pb_read(pbf, filename, len);
-    filename[len] = '\0';
-
-#ifdef DEBUG    
-    printf("filename is %s\n", filename);
-#endif
-
-       return filename;
-}
-
-/*
-Funtion name: read_string
-args:  pbf             Pointer to push back file handle.  Used for reading input file.
-               size    Size of embedded file in bytes.
-purpose:       Create a string containing the contents of the embedded noncompressed file.
-returns: Pointer to newly allocated string containing embedded file contents.
-*/
-
-static char *read_string(pb_file *pbf, int size) {
-       char *page;
-       
-       if((page = (char *) malloc(size + 1))) {
-               pb_read(pbf, page, size);
-               page[size] = '\0';
-       }
-       else {
-               fprintf(stderr, "Malloc of page buffer failed.\n");
-               fprintf(stderr, "Error: %s\n", strerror(errno));
-               exit(1);
-       }
-
-       return page;
-}
-
-/*
-Function name: extract_line
-args:  stream  String containing the full contents of a file which is to be substringed
-                               in order to provide line representing our grep output.
-               begin   Index into stream which regular expression first matches.
-               end             Index into stream which end of match to the regular expression.
-               b               Pointer to the index of what will be the beginning of the line when
-                               string is returned.  Used for -b option.
-purpose:       Create a string that can be printed by jargrep from the long string stream.
-The matching line that is printed out by jargrep is generated by this function.
-returns: Pointer to newly allocated string containing matched expression.
-*/
-
-static char *extract_line(const char *stream, regoff_t begin, regoff_t end, int *b) {
-       int e;
-       int length;
-       char *retstr;
-
-       for(*b = begin; *b >= 0 && !iscntrl((unsigned char)stream[*b]); (*b)--);
-       (*b)++;
-       for(e = end; stream[e] == '\t' || !iscntrl((unsigned char)stream[e]); e++);
-       length = e - *b;
-       if((retstr = (char *) malloc(length + 1))) {
-               sprintf(retstr, "%d:", *b);
-               strncpy(retstr, &(stream[*b]), length);
-               retstr[length] = '\0';
-       }
-       else {
-               fprintf(stderr, "Malloc failed of output string.\n");
-               fprintf(stderr, "Error: %s\n", strerror(errno));
-               exit(1);
-       }
-
-       return retstr;
-}
-
-/*
-Function name: chk_wrd
-args:  exp             Pointer to compiled POSIX style regular expression of search target.
-               str             String known to contain at least one match of exp.
-purpose: Verify that the occurance of the regular expression in str occurs as a whole
-word and not a substring of another word.
-returns: TRUE if it is a word, FALSE of it is a substring.
-*/
-
-static int chk_wrd(regex_t *exp, const char *str) {
-       int wrd_fnd = FALSE;
-       int frnt_ok;
-       int bck_ok;
-       const char *str2;
-       regmatch_t match;
-
-       str2 = str;
-       frnt_ok = bck_ok = FALSE;
-       while(!wrd_fnd && !regexec(exp, str2, 1, &match, 0)) {
-               if(!match.rm_so && (str2 == str)) frnt_ok = TRUE;
-               else if(!isalnum((unsigned char)str2[match.rm_so - 1])
-                       && str2[match.rm_so - 1] != '_')
-                       frnt_ok = TRUE;
-               else frnt_ok = FALSE;
-               if(frnt_ok) {
-                       if(str2[match.rm_eo] == '\0') bck_ok = TRUE;
-                       else if(!isalnum((unsigned char)str2[match.rm_eo])
-                               && str2[match.rm_eo] != '_')
-                               bck_ok = TRUE;
-                       else bck_ok = FALSE;
-               }
-               wrd_fnd = frnt_ok && bck_ok;
-               str2 = &(str2[match.rm_eo]);
-       }
-
-       return wrd_fnd;
-}
-
-/*
-Function name: prnt_mtchs
-args:  exp                     Pointer to compiled POSIX style regular expression of search target.
-               filename        String containing the name of the embedded file which matches have
-                                       been found in.
-               stream          String containing the processed contents of the embedded jar file
-                                       represended with filename.
-               pmatch          Array of regmatch_t matches into stream.
-               nl_offset       Array of offsets of '\n' characters in stream.  May be NULL if -n is
-                                       not set on command line.
-               num                     Number of matches in pmatch array.
-               lines           Number of lines in file.  Not set if -n is not set on command line.
-               options         Bitwise flag containing flags set to represent the command line 
-                                       options.
-purpose:       Control output of jargrep.  Output is controlled by which options have been
-set at the command line.
-*/
-
-static void prnt_mtchs(regex_t *exp, const char *filename, const char *stream, regmatch_t *pmatch, regmatch_t *nl_offset, int num, int lines, int options) {
-       int i;
-       int j = 0;
-       int ln_cnt;
-       int begin;
-       int o_begin;
-       char *str;
-
-       o_begin = -1;
-       ln_cnt = 0;
-       for(i = 0; i < num; i++) {
-               str = extract_line(stream, pmatch[i].rm_so, pmatch[i].rm_eo, &begin);
-               if(begin > o_begin) {
-                       if(!(options & JG_WORD_EXPRESSIONS) || chk_wrd(exp, str)) {
-                               ln_cnt++;
-                               if(!(options & JG_PRINT_COUNT)) {
-                                       printf("%s:", filename);
-                                       if(options & JG_PRINT_LINE_NUMBER) {
-                                               for(; j < lines && nl_offset[j].rm_so < begin; j++);
-                                               printf("%d:", j + 1);
-                                       }
-                                       if(options & JG_PRINT_BYTEOFFSET) printf("%d:", begin);
-                                       printf("%s\n", str);
-                               }
-                       }
-               }
-               o_begin = begin;
-               free(str);
-       }
-       if(options & JG_PRINT_COUNT) printf("%s:%d\n", filename, ln_cnt);
-}
-
-/*
-Function name: check_crc
-args:  pbf             Pointer to pushback file pointer for jar file.
-               stream  String containing the non modified contents fo the extraced file entry.
-               usize   Size of file in bytes.
-purpose:       Verify the CRC matches that as what is stored in the jar file.
-*/
-
-static void check_crc(pb_file *pbf, const char *stream, ub4 usize) {
-       ub4 crc=0;
-       ub4 lcrc;
-       ub1 scratch[16];
-
-       crc = crc32(crc, NULL, 0);
-       crc = crc32(crc, (const unsigned char *)stream, usize);
-       if(pb_read(pbf, scratch, 16) != 16) {
-               perror("read");
-        exit(1);
-       }
-       if(UNPACK_UB4(scratch, 0) != 0x08074b50) {
-               fprintf(stderr, "Error! Missing data descriptor!\n");
-               exit(1);
-       }
-       lcrc = UNPACK_UB4(scratch, 4);
-       if(crc != lcrc){
-       fprintf(stderr, "Error! CRCs do not match! Got %x, expected %x\n",
-              crc, lcrc);
-       exit(1);
-    }
-}
-
-/*
-Function name mk_ascii
-args:  stream  String that contains the contents of the extraced file entry.
-               usize   String size.
-purpose:       Make certain that the contents of the file are ASCII, not binary.  This
-permits grepping of binary files as well by converting non ASCII and control characters
-into '\n'.
-*/
-
-static void mk_ascii(char *stream, size_t usize) {
-       size_t i;
-
-       for(i = 0; i < usize; i++) 
-               if(stream[i] != '\t'
-                  && (iscntrl((unsigned char)stream[i])
-                      || (unsigned char) stream[i] >= 128))
-                       stream[i] = '\n';
-}
-
-/*
-Funtion name: fnd_match
-args:  exp                     Pointer to compiled POSIX style regular expression of search target.
-               str_stream      String that contains the contents of the extracted file entry.
-               i                       Pointer to counter and index of matches.
-purpose:       Search str_stream for occurances of the regular expression exp and create
-an array of matches.
-returns:  Pointer to newly allocated array of regmatch_t which gives indexes to start
-and end of matches.  NULL is returned upon no matches found.
-*/
-
-static regmatch_t *fnd_match(regex_t *exp, const char *str_stream, int *i) {
-       int regflag;
-       regmatch_t match;
-       regmatch_t *match_array;
-       regmatch_t *tmp;
-
-       match_array = NULL;
-       for(*i = 0, regflag = regexec(exp, str_stream, 1, &match, 0); !regflag; 
-               regflag = regexec(exp, &(str_stream[match.rm_eo]), 1, &match, 0), (*i)++)
-       {
-               if((tmp = (regmatch_t *) 
-                   realloc(match_array, sizeof(regmatch_t) * ((*i) + 1))))
-               {
-                       match_array = tmp;
-                       if(*i) {
-                               match.rm_so += match_array[(*i) - 1].rm_eo;
-                               match.rm_eo += match_array[(*i) - 1].rm_eo;
-                       }
-                       match_array[*i] = match;
-               }
-               else {
-                       fprintf(stderr, "Realloc of match_array failed.\n");
-                       fprintf(stderr, "Error: %s\n", strerror(errno));
-                       exit(1);
-               }
-       } 
-
-       return match_array;
-}
-
-/*
-Function name: cont_grep
-args:  exp             Pointer to compiled POSIX style regular expression of search target.
-               nl_exp  Pointer to compiled POSIX style regular expression of newlines.  This
-                               argument is NULL unless the -n option is used on the command line.
-               fd              File descriptor of the jar file being grepped.
-               pbf             Pointer to pushback file style file stream.  This is for use with
-                               the pushback.c file io funtions.
-               options Bitwise flag containing flags set to represent the command line options.
-purpose:       This function handles single entries in an open jar file.  The header is
-read and then the embeded file is extracted and grepped.
-returns: FALSE upon failure, TRUE otherwise.
-*/
-
-static int cont_grep(regex_t *exp, regex_t *nl_exp, int fd, pb_file *pbf, int options) {
-       int retflag = TRUE;
-       int i;
-       int j;
-       ub4 csize;
-       ub4 usize;
-       ub2 fnlen;
-       ub2 eflen;
-       ub2 flags;
-       ub2 method;
-       ub1 file_header[30];
-       char *filename;
-       char *str_stream;
-       regmatch_t *match_array;
-       regmatch_t *nl_offsets=0;
-
-       if(pb_read(pbf, (file_header + 4), 26) != 26) {
-               perror("read");
-               retflag = FALSE;
-       }
-       else {
-               decd_siz(&csize, &usize, &fnlen, &eflen, &flags, &method, file_header);
-               filename = new_filename(pbf, fnlen);
-               lseek(fd, eflen, SEEK_CUR);
-               if(filename[fnlen - 1] != '/') {
-                       str_stream = (method == 8 || (flags & 0x0008)) ? 
-                               (char *) inflate_string(pbf, &csize, &usize) : 
-                                       read_string(pbf, csize);
-                       if(flags & 0x008) check_crc(pbf, str_stream, usize);
-                       mk_ascii(str_stream, usize);
-                       match_array = fnd_match(exp, str_stream, &i);
-                       if((options & JG_PRINT_LINE_NUMBER) && i) 
-                               nl_offsets = fnd_match(nl_exp, str_stream, &j);
-                       prnt_mtchs(exp, filename, str_stream, match_array, nl_offsets, i, j, options);
-                       if(match_array) free(match_array);
-                       free(str_stream);
-               }
-               free(filename);
-               retflag = TRUE;
-       }
-
-       return retflag;
-}
-
-/*
-Funtion name: jargrep
-args:  exp             Pointer to compiled POSIX style regular expression of search target.
-               nl_exp  Pointer to compiled regular expression for newlines or NULL.  Only set 
-                               if -n option is present at command line.
-               jarfile Filename of jar file to be searched.
-               options Bitwise flag containing flags set to represent the command line options.
-purpose:       Open jar file.  Check signatures.  When right signature is found go to deeper
-grep routine.
-*/
-
-static void jargrep(regex_t *exp, regex_t *nl_exp, const char *jarfile, int options){
-       int fd;
-       int floop = TRUE;
-       pb_file pbf;
-       ub1 scratch[16];
-
-       if((fd = open(jarfile, O_RDONLY)) == -1) {
-               if(!(options & JG_SUPRESS_ERROR))
-                       fprintf(stderr, "Error reading file '%s': %s\n", jarfile, strerror(errno));
-       }
-       else {
-               pb_init(&pbf, fd);      
-               
-               do {
-                       if(pb_read(&pbf, scratch, 4) != 4) {
-                               perror("read");
-                               floop = FALSE;
-                       }
-                       else {
-                               switch (check_sig(scratch, &pbf)) {
-                               case 0:
-                                       floop = cont_grep(exp, nl_exp, fd, &pbf, options);
-                                       break;
-                               case 1:
-                                       floop = FALSE;
-                                       break;
-                               case 2:
-                                       /* fall through continue */
-                                       ;
-                               }
-                       }
-               } while(floop);
-       }
-}
-
-/* This is used to mark options with no short value.  */
-#define LONG_OPT(Num)  ((Num) + 128)
-
-#define OPT_HELP     LONG_OPT (0)
-
-static const struct option option_vec[] =
-{
-  { "help", no_argument, NULL, OPT_HELP },
-  { "version", no_argument, NULL, 'V' },
-  { NULL, no_argument, NULL, 0 }
-};
-
-/*
-Funtion Name: main
-args:  argc    number of in coming args.
-               argv    array of strings.
-purpose: Entry point of the program.  Parse command line arguments and set options.
-Set up regular expressions.  Call grep routines for each file as input.
-returns: 1 on error 0 on success.
-*/
-
-int main(int argc, char **argv) {
-       int c;
-       int retval = 0;
-       int fileindex;
-       int options = 0;
-       regex_t *regexp;
-       regex_t *nl_exp = NULL;
-       char *regexpstr = NULL;
-
-       while((c = getopt_long(argc, argv, "bce:insVw",
-                              option_vec, NULL)) != -1) {
-               switch(c) {
-                       case 'b':
-                               options |= JG_PRINT_BYTEOFFSET;
-                               break;
-                       case 'c':
-                               options |= JG_PRINT_COUNT;
-                               break;
-                       case 'e':
-                               if(!(regexpstr = (char *) malloc(strlen(optarg) + 1))) {
-                                       fprintf(stderr, "Malloc failure.\n");
-                                       fprintf(stderr, "Error: %s\n", strerror(errno));
-                                       exit(1);
-                               }
-                               strcpy(regexpstr, optarg);
-                               break;
-                       case 'i':
-                               options |= JG_IGNORE_CASE;
-                               break;
-                       case 'n':
-                               options |= JG_PRINT_LINE_NUMBER;
-                               break;
-                       case 's':
-                               options |= JG_SUPRESS_ERROR;
-                               break;
-                       case 'v':
-                               options |= JG_INVERT;
-                               break;
-                       case 'V':
-                               version ();
-                               break;
-                       case 'w':
-                               options |= JG_WORD_EXPRESSIONS;
-                               break;
-                       case OPT_HELP:
-                               help(argv[0]);
-                               break;
-                       default:
-                               fprintf(stderr, Usage, argv[0]);
-                               exit(1);
-               }
-       }
-       if(!regexpstr){
-               if(((argc - optind) >= 2)) {
-                       regexpstr = argv[optind];
-                       fileindex = optind + 1;
-               }
-               else {
-                       fprintf(stderr, "Invalid arguments.\n");
-                       fprintf(stderr, Usage, argv[0]);
-                       exit(1);
-               }
-       }
-       else if((argc - optind) == 1) {
-               fileindex = optind;
-       }
-       else {
-               fprintf(stderr, "Invalid arguments.\n");
-               fprintf(stderr, Usage, argv[0]);
-               exit(1);
-       }
-
-       if(opt_valid(options)) {
-               regexp = create_regexp(regexpstr, options);
-               if(options & JG_PRINT_LINE_NUMBER) nl_exp = create_regexp("\n", 0);
-               init_inflation();
-               for(; fileindex < argc; fileindex++)
-                       jargrep(regexp, nl_exp, argv[fileindex], options);
-               regfree(regexp);
-               if(options & JG_PRINT_LINE_NUMBER) regfree(nl_exp);
-       }
-       else {
-               retval = 1;
-               fprintf(stderr, "Error: Invalid combination of options.\n");
-       }
-
-       return retval;
-}
-
-void help(const char *filename)
-{
-  printf (Usage, filename);
-  printf ("\
-\n\
-Search files in a jar file for a pattern.\n\
-\n\
-   -b                print byte offset of match\n\
-   -c                print number of matches\n\
-   -i                compare case-insensitively\n\
-   -n                print line number of each match\n\
-   -s                suppress error messages\n\
-   -w                force PATTERN to match only whole words\n\
-   -e PATTERN        use PATTERN as regular expression\n\
-   -V|--version      print version number and exit\n\
-   --help            print help\n\
-");
-
-  exit (0);
-}
-
-void version ()
-{
-  printf("grepjar (%s) %s\n\n", PACKAGE, VERSION);
-  printf("Copyright 1999, 2000, 2001  Bryan Burns\n");
-  printf("Copyright 2000 Cory Hollingsworth\n");
-  printf("Copyright 2006 Free Software Foundation\n");
-  printf("\
-This is free software; see the source for copying conditions.  There is NO\n\
-warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
-  exit (0);
-}