1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
|
/* Zutils - Utilities dealing with compressed files
Copyright (C) 2009, 2010 Antonio Diaz Diaz.
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#define _FILE_OFFSET_BITS 64
#include <cerrno>
#include <climits>
#include <csignal>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <list>
#include <string>
#include <vector>
#include <dirent.h>
#include <fcntl.h>
#include <stdint.h>
#include <unistd.h>
#include <sys/stat.h>
#if defined(__MSVCRT__) || defined(__OS2__)
#include <io.h>
#endif
#include "arg_parser.h"
#include "zutils.h"
#if CHAR_BIT != 8
#error "Environments where CHAR_BIT != 8 are not supported."
#endif
namespace {
#ifdef O_BINARY
const int o_binary = O_BINARY;
#else
const int o_binary = 0;
#endif
enum Mode { m_none, m_zcat, m_zgrep, m_ztest };
void show_help() throw()
{
std::printf( "Zutils is a collection of utilities able to deal with any combination of\n" );
std::printf( "compressed and non-compressed files transparently. If any given file,\n" );
std::printf( "including standard input, is compressed, its uncompressed content is used.\n" );
std::printf( "The supported compressors are bzip2, gzip, lzip and xz.\n" );
std::printf( "\nUsage: %s <operation> [options] [files]\n", invocation_name );
std::printf( "\nTry `%s <operation> --help' for more specific help.\n", invocation_name );
std::printf( "\nOperations:\n" );
std::printf( " -h, --help display this help and exit\n" );
std::printf( " -V, --version output version information and exit\n" );
std::printf( " --zcat zcat operation\n" );
std::printf( " --zgrep zgrep operation\n" );
std::printf( " --ztest ztest operation\n" );
show_help_addr();
}
int simple_extension_index( const std::string & name ) throw()
{
for( int i = 0; simple_extensions[i]; ++i )
{
const std::string ext( simple_extensions[i] );
if( name.size() > ext.size() &&
name.compare( name.size() - ext.size(), ext.size(), ext ) == 0 )
return i;
}
return -1;
}
int open_instream( std::string & input_filename, const Mode program_mode ) throw()
{
int infd = open( input_filename.c_str(), O_RDONLY | o_binary );
if( infd < 0 )
{
if( ( program_mode == m_zcat || program_mode == m_zgrep )
&& simple_extension_index( input_filename ) < 0 )
{
for( int i = 0; simple_extensions[i]; ++i )
{
const std::string name( input_filename + simple_extensions[i] );
infd = open( name.c_str(), O_RDONLY | o_binary );
if( infd >= 0 ) { input_filename = name; break; }
}
}
if( infd < 0 )
show_error2( "Can't open input file", input_filename.c_str() );
}
return infd;
}
#include "zcat.cc"
#include "zgrep.cc"
#include "ztest.cc"
} // end namespace
int main( const int argc, const char * const argv[] )
{
enum { help_opt = 256, verbose_opt, zcat_opt, zgrep_opt, ztest_opt };
const Arg_parser::Option * options = 0;
int infd = -1;
Mode program_mode = m_none;
bool recursive = false;
std::string input_filename;
std::list< std::string > filenames;
Cat_options cat_options;
std::vector< const char * > grep_args; // args to grep, maybe empty
std::vector< const char * > ztest_args; // args to ztest, maybe empty
invocation_name = argv[0];
const Arg_parser::Option m_zcat_options[] =
{
{ 'A', "show-all", Arg_parser::no }, // cat
{ 'b', "number-nonblank", Arg_parser::no }, // cat
{ 'c', "stdout", Arg_parser::no }, // gzip
{ 'd', "decompress", Arg_parser::no }, // gzip
{ 'e', 0, Arg_parser::no }, // cat
{ 'E', "show-ends", Arg_parser::no }, // cat
{ 'f', "force", Arg_parser::no }, // gzip
{ 'h', "help", Arg_parser::no },
{ 'l', "list", Arg_parser::no }, // gzip
{ 'L', "license", Arg_parser::no }, // gzip
{ 'n', "number", Arg_parser::no }, // cat
{ 'q', "quiet", Arg_parser::no },
{ 'r', "recursive", Arg_parser::no },
{ 's', "squeeze-blank", Arg_parser::no }, // cat
{ 't', 0, Arg_parser::no }, // cat
{ 'T', "show-tabs", Arg_parser::no }, // cat
{ 'v', "show-nonprinting", Arg_parser::no }, // cat
{ 'V', "version", Arg_parser::no },
{ verbose_opt, "verbose", Arg_parser::no },
{ zcat_opt, "zcat", Arg_parser::no },
{ 0 , 0, Arg_parser::no } };
const Arg_parser::Option m_zgrep_options[] =
{
{ 'a', "text", Arg_parser::no }, // grep GNU
{ 'A', "after-context", Arg_parser::yes }, // grep GNU
{ 'b', "byte-offset", Arg_parser::no }, // grep GNU
{ 'B', "before-context", Arg_parser::yes }, // grep GNU
{ 'c', "count", Arg_parser::no }, // grep
{ 'C', "context", Arg_parser::yes }, // grep GNU
{ 'e', "regexp", Arg_parser::yes }, // grep
{ 'E', "extended-regexp", Arg_parser::no }, // grep
{ 'f', "file ", Arg_parser::yes }, // grep
{ 'F', "fixed-strings", Arg_parser::no }, // grep
{ 'h', "no-filename", Arg_parser::no }, // grep GNU
{ 'H', "with-filename", Arg_parser::no }, // grep GNU
{ 'i', "ignore-case", Arg_parser::no }, // grep
{ 'I', 0, Arg_parser::no }, // grep GNU
{ 'l', "files-with-matches", Arg_parser::no }, // grep
{ 'L', "files-without-match", Arg_parser::no }, // grep GNU
{ 'm', "max-count", Arg_parser::yes }, // grep GNU
{ 'n', "line-number", Arg_parser::no }, // grep
{ 'o', "only-matching", Arg_parser::no }, // grep
{ 'q', "quiet", Arg_parser::no },
{ 'r', "recursive", Arg_parser::no },
{ 's', "no-messages", Arg_parser::no }, // grep
{ 'v', "invert-match", Arg_parser::no }, // grep
{ 'V', "version", Arg_parser::no },
{ 'w', "word-regexp", Arg_parser::no }, // grep GNU
{ 'x', "line-regexp", Arg_parser::no }, // grep
{ help_opt, "help", Arg_parser::no },
{ verbose_opt, "verbose", Arg_parser::no },
{ zgrep_opt, "zgrep", Arg_parser::no },
{ 0 , 0, Arg_parser::no } };
const Arg_parser::Option m_ztest_options[] =
{
{ 'h', "help", Arg_parser::no },
{ 'q', "quiet", Arg_parser::no },
{ 'r', "recursive", Arg_parser::no },
{ 'v', "verbose", Arg_parser::no },
{ 'V', "version", Arg_parser::no },
{ ztest_opt, "ztest", Arg_parser::no },
{ 0 , 0, Arg_parser::no } };
{ // parse operation
const Arg_parser::Option operations[] =
{
{ 'h', "help", Arg_parser::no },
{ 'V', "version", Arg_parser::no },
{ zcat_opt, "zcat", Arg_parser::no },
{ zgrep_opt, "zgrep", Arg_parser::no },
{ ztest_opt, "ztest", Arg_parser::no },
{ 0 , 0, Arg_parser::no } };
const Arg_parser parser( argv[1], ( argc > 2 ) ? argv[2] : 0, operations );
if( parser.error().size() ) // bad operation
{ show_error( parser.error().c_str(), 0, true ); return 1; }
if( parser.arguments() > 0 )
{
switch( parser.code( 0 ) )
{
case 0 : break;
case 'h': show_help(); return 0;
case 'V': show_version(); return 0;
case zcat_opt : program_mode = m_zcat; options = m_zcat_options;
util_name = "zcat"; break;
case zgrep_opt : program_mode = m_zgrep; options = m_zgrep_options;
util_name = "zgrep"; break;
case ztest_opt : program_mode = m_ztest; options = m_ztest_options;
util_name = "ztest"; break;
default : internal_error( "uncaught option" );
}
}
#if defined(__MSVCRT__) || defined(__OS2__)
_setmode( STDIN_FILENO, O_BINARY );
_setmode( STDOUT_FILENO, O_BINARY );
#endif
if( program_mode == m_none )
{
show_error( "You must specify the operation to be performed.", 0, true );
return 1;
}
} // end parse operation
const Arg_parser parser( argc, argv, options );
if( parser.error().size() ) // bad option
{ show_error( parser.error().c_str(), 0, true );
return ( program_mode == m_zcat ) ? 1 : 2; }
int argind = 0;
bool grep_list = false;
bool grep_show_name = true;
bool grep_pattern_found = false;
for( ; argind < parser.arguments(); ++argind )
{
const int code = parser.code( argind );
const char * arg = parser.argument( argind ).c_str();
if( !code )
{
if( program_mode == m_zgrep && !grep_pattern_found )
{ grep_args.push_back( arg ); grep_pattern_found = true; continue; }
else break; // no more options
}
switch( program_mode )
{
case m_none: internal_error( "invalid operation" );
case m_zcat:
switch( code )
{
case 'A': cat_options.show_ends = true;
cat_options.show_nonprinting = true;
cat_options.show_tabs = true; break;
case 'b': cat_options.number_lines = 1; break;
case 'c': break;
case 'd': break;
case 'e': cat_options.show_nonprinting = true; // fall through
case 'E': cat_options.show_ends = true; break;
case 'f': break;
case 'h': show_zcat_help(); return 0;
case 'l': break;
case 'L': break;
case 'n': if( cat_options.number_lines == 0 )
{ cat_options.number_lines = 2; } break;
case 'q': verbosity = -1; break;
case 'r': recursive = true; break;
case 's': cat_options.squeeze_blank = true; break;
case 't': cat_options.show_nonprinting = true; // fall through
case 'T': cat_options.show_tabs = true; break;
case 'v': cat_options.show_nonprinting = true; break;
case 'V': show_version( "Zcat" ); return 0;
case verbose_opt : if( verbosity < 4 ) ++verbosity; break;
case zcat_opt : break;
default : internal_error( "uncaught option" );
} break;
case m_zgrep:
switch( code )
{
case 'a': grep_args.push_back( "-a" ); break;
case 'A': grep_args.push_back( "-A" ); grep_args.push_back( arg ); break;
case 'b': grep_args.push_back( "-b" ); break;
case 'B': grep_args.push_back( "-B" ); grep_args.push_back( arg ); break;
case 'c': grep_args.push_back( "-c" ); break;
case 'C': grep_args.push_back( "-C" ); grep_args.push_back( arg ); break;
case 'e': grep_args.push_back( "-e" ); grep_args.push_back( arg );
grep_pattern_found = true; break;
case 'E': grep_args.push_back( "-E" ); break;
case 'f': grep_args.push_back( "-f" ); grep_args.push_back( arg );
grep_pattern_found = true; break;
case 'F': grep_args.push_back( "-F" ); break;
case 'h': grep_show_name = false; break;
case 'H': grep_show_name = true; break;
case 'i': grep_args.push_back( "-i" ); break;
case 'I': grep_args.push_back( "-I" ); break;
case 'l': grep_args.push_back( "-l" ); grep_list = true; break;
case 'L': grep_args.push_back( "-L" ); grep_list = true; break;
case 'm': grep_args.push_back( "-m" ); grep_args.push_back( arg ); break;
case 'n': grep_args.push_back( "-n" ); break;
case 'o': grep_args.push_back( "-o" ); break;
case 'q': grep_args.push_back( "-q" ); verbosity = -1; break;
case 'r': recursive = true; break;
case 's': grep_args.push_back( "-s" ); verbosity = -1; break;
case 'v': grep_args.push_back( "-v" ); break;
case 'V': show_version( "Zgrep" ); return 0;
case 'w': grep_args.push_back( "-w" ); break;
case 'x': grep_args.push_back( "-x" ); break;
case help_opt : show_zgrep_help(); return 0;
case verbose_opt : if( verbosity < 4 ) ++verbosity; break;
case zgrep_opt : break;
default : internal_error( "uncaught option" );
} break;
case m_ztest:
switch( code )
{
case 'h': show_ztest_help(); return 0;
case 'q': verbosity = -1; ztest_args.push_back( "-q" ); break;
case 'r': recursive = true; break;
case 'v': if( verbosity < 4 ) ++verbosity;
ztest_args.push_back( "-v" ); break;
case 'V': show_version( "Ztest" ); return 0;
case ztest_opt : break;
default : internal_error( "uncaught option" );
} break;
}
} // end process options
if( program_mode == m_zgrep && !grep_pattern_found )
{ show_error( "Pattern not found.", 0, true ); return 2; }
bool filenames_given = false;
for( ; argind < parser.arguments(); ++argind )
{
if( parser.argument( argind ) != "-" ) filenames_given = true;
filenames.push_back( parser.argument( argind ) );
}
if( filenames.empty() ) filenames.push_back("-");
int retval = ( ( program_mode == m_zgrep ) ? 1 : 0 );
while( !filenames.empty() )
{
input_filename = filenames.front();
filenames.pop_front();
if( !input_filename.size() || input_filename == "-" )
{
input_filename.clear();
infd = STDIN_FILENO;
}
else
{
if( recursive )
{
struct stat st;
if( !stat( input_filename.c_str(), &st ) && S_ISDIR( st.st_mode ) )
{
DIR * const dirp = opendir( input_filename.c_str() );
if( !dirp )
{
show_error2( "Can't open directory", input_filename.c_str() );
if( retval < 1 ) retval = 1; continue;
}
std::list< std::string > tmp_list;
while( true )
{
const struct dirent * const entryp = readdir( dirp );
if( !entryp ) { closedir( dirp ); break; }
std::string tmp_name( entryp->d_name );
if( tmp_name != "." && tmp_name != ".." )
tmp_list.push_back( input_filename + "/" + tmp_name );
}
filenames.splice( filenames.begin(), tmp_list );
continue;
}
}
infd = open_instream( input_filename, program_mode );
if( infd < 0 ) { if( retval < 1 ) retval = 1; continue; }
}
int tmp = 0;
switch( program_mode )
{
case m_none:
break;
case m_zcat:
tmp = cat( infd, input_filename, cat_options );
break;
case m_zgrep:
if( infd == STDIN_FILENO )
tmp = zgrep_stdin( infd, grep_args );
else tmp = zgrep_file( infd, input_filename, grep_args,
grep_list, grep_show_name );
break;
case m_ztest:
if( infd == STDIN_FILENO )
tmp = ztest_stdin( infd, ztest_args );
else tmp = ztest_file( infd, input_filename, ztest_args );
break;
}
if( program_mode == m_zgrep )
{ if( tmp == 0 || ( tmp == 2 && retval == 1 ) ) retval = tmp; }
else if( tmp > retval ) retval = tmp;
if( input_filename.size() )
{ close( infd ); infd = -1; }
}
if( std::fclose( stdout ) != 0 )
{
show_error( "Can't close stdout", errno );
switch( program_mode )
{
case m_none: break;
case m_zcat: retval = 1; break;
case m_zgrep: if( retval != 0 || verbosity >= 0 ) retval = 2; break;
case m_ztest: if( retval == 0 ) retval = 1; break;
}
}
return retval;
}
|