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Viewing changes to plugin/pbms/src/cslib/CSPath.cc

  • Committer: Monty Taylor
  • Date: 2011-02-13 17:26:39 UTC
  • mfrom: (2157.2.2 give-in-to-pkg-config)
  • mto: This revision was merged to the branch mainline in revision 2166.
  • Revision ID: mordred@inaugust.com-20110213172639-nhy7i72sfhoq13ms
Merged in pkg-config fixes.

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plugin/pbms/src/cslib/CSPath.cc
 
1
/* Copyright (C) 2008 PrimeBase Technologies GmbH, Germany
 
2
 *
 
3
 * PrimeBase Media Stream for MySQL
 
4
 *
 
5
 * This program is free software; you can redistribute it and/or modify
 
6
 * it under the terms of the GNU General Public License as published by
 
7
 * the Free Software Foundation; either version 2 of the License, or
 
8
 * (at your option) any later version.
 
9
 *
 
10
 * This program is distributed in the hope that it will be useful,
 
11
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
12
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
13
 * GNU General Public License for more details.
 
14
 *
 
15
 * You should have received a copy of the GNU General Public License
 
16
 * along with this program; if not, write to the Free Software
 
17
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 
18
 *
 
19
 * Original author: Paul McCullagh
 
20
 * Continued development: Barry Leslie
 
21
 *
 
22
 * 2007-06-07
 
23
 *
 
24
 * CORE SYSTEM:
 
25
 * Basic file system path.
 
26
 *
 
27
 */
 
28
 
 
29
#include "CSConfig.h"
 
30
 
 
31
#include <string.h>
 
32
#include <stdio.h>
 
33
 
 
34
#include "CSStrUtil.h"
 
35
#include "CSSys.h"
 
36
#include "CSFile.h"
 
37
#include "CSDirectory.h"
 
38
#include "CSPath.h"
 
39
#include "CSGlobal.h"
 
40
 
 
41
/*
 
42
 * ---------------------------------------------------------------
 
43
 * CORE SYSTEM PATH
 
44
 */
 
45
CSLock  CSPath::iRename_lock;
 
46
 
 
47
CSPath *CSPath::iCWD = NULL;
 
48
 
 
49
CSPath::~CSPath()
 
50
{
 
51
        if (iPath)
 
52
                iPath->release();
 
53
}
 
54
 
 
55
CSFile *CSPath::try_CreateAndOpen(CSThread *self, int mode, bool retry)
 
56
{
 
57
        try_(a) {
 
58
                return openFile(mode | CSFile::CREATE); // success, do not try again.
 
59
        }
 
60
        catch_(a) {
 
61
                if (retry || !CSFile::isDirNotFound(&self->myException))
 
62
                        throw_();
 
63
 
 
64
                /* Make sure the parent directory exists: */
 
65
                CSPath  *dir = CSPath::newPath(RETAIN(this), "..");
 
66
                push_(dir);
 
67
                dir->makePath();
 
68
                release_(dir);
 
69
 
 
70
        }
 
71
        cont_(a);
 
72
        return NULL; 
 
73
}
 
74
 
 
75
CSFile *CSPath::createFile(int mode)
 
76
{
 
77
        CSFile  *file = NULL;
 
78
        bool    retry = false;
 
79
 
 
80
        enter_();
 
81
        while (file == NULL) {
 
82
                file = try_CreateAndOpen(self, mode, retry);
 
83
                retry = true;
 
84
        }
 
85
        return_(file);
 
86
}
 
87
 
 
88
/* Copy the contents of one file to another.
 
89
 * The destination need not exist.
 
90
 * If the destination exists, it will be
 
91
 * overwritten if 'overwrite' is true.
 
92
 */
 
93
void CSPath::copyFile(CSPath *in_to_file, bool overwrite)
 
94
{
 
95
        CSPath                  *to_file = in_to_file;
 
96
        bool                    is_dir;
 
97
        CSFile                  *infile, *outfile;
 
98
 
 
99
        enter_();
 
100
        push_(in_to_file);
 
101
        
 
102
        if (to_file->exists(&is_dir)) {
 
103
                if (is_dir) {
 
104
                        to_file = CSPath::newPath(RETAIN(in_to_file), getNameCString());
 
105
                        push_(to_file);
 
106
                        
 
107
                        if (to_file->exists(&is_dir)) { 
 
108
                                if (!overwrite)
 
109
                                        CSException::throwFileError(CS_CONTEXT, to_file->getCString(), EEXIST);
 
110
                                to_file->remove();
 
111
                        }
 
112
                }
 
113
                else if (!overwrite)
 
114
                        CSException::throwFileError(CS_CONTEXT, to_file->getCString(), EEXIST);
 
115
        }
 
116
 
 
117
        infile = openFile(CSFile::READONLY);
 
118
        push_(infile);
 
119
 
 
120
        outfile = to_file->createFile(CSFile::TRUNCATE);
 
121
        push_(outfile);
 
122
        
 
123
        CSStream::pipe(outfile->getOutputStream(), infile->getInputStream());
 
124
        release_(outfile);
 
125
        release_(infile);
 
126
        
 
127
        if (to_file != in_to_file)
 
128
                release_(to_file);
 
129
                
 
130
        release_(in_to_file);
 
131
        exit_();
 
132
}
 
133
 
 
134
void CSPath::makePath()
 
135
{
 
136
        CSPath  *path;
 
137
        bool    is_dir;
 
138
 
 
139
        enter_();
 
140
        if (iPath->length() <= 1)
 
141
                exit_();
 
142
 
 
143
        if (exists(&is_dir)) {
 
144
                if (!is_dir)
 
145
                        CSException::throwFileError(CS_CONTEXT, iPath, EEXIST);
 
146
                exit_();
 
147
        }
 
148
 
 
149
        path = CSPath::newPath(RETAIN(this), "..");
 
150
        push_(path);
 
151
        
 
152
        path->makePath();
 
153
        makeDir();
 
154
        
 
155
        release_(path);
 
156
 
 
157
        exit_();
 
158
}
 
159
 
 
160
/* Copy the contents of one directory to another.
 
161
 * The destination must be a directory.
 
162
 * The new source directory will be copied to
 
163
 * a directory of the same name in the destination.
 
164
 */
 
165
void CSPath::copyDir(CSPath *in_to_dir, bool overwrite)
 
166
{
 
167
        CSPath          *to_dir = in_to_dir;
 
168
        bool            is_dir;
 
169
        CSDirectory *dir = NULL;
 
170
        CSPath          *path = NULL;
 
171
 
 
172
        enter_();
 
173
        push_(in_to_dir);
 
174
        
 
175
        if (to_dir->exists(&is_dir)) {
 
176
                if (!is_dir)
 
177
                        CSException::throwFileError(CS_CONTEXT, to_dir->getCString(), ENOTDIR);
 
178
                /* Add the source directory name to the destination: */
 
179
                to_dir = CSPath::newPath(RETAIN(in_to_dir), getNameCString());
 
180
                push_(to_dir);
 
181
                
 
182
                if (to_dir->exists(&is_dir)) {
 
183
                        if (!overwrite)
 
184
                                CSException::throwFileError(CS_CONTEXT, to_dir->getCString(), EEXIST);
 
185
                        to_dir->remove();
 
186
                }
 
187
        }
 
188
 
 
189
        /* Make the directory and copy the contents of the source
 
190
         * into it:
 
191
         */
 
192
        to_dir->makePath();
 
193
 
 
194
        dir = openDirectory();
 
195
        push_(dir);
 
196
        while (dir->next()) {
 
197
                self->interrupted();
 
198
                path = CSPath::newPath(RETAIN(this), dir->name());
 
199
                push_(path);
 
200
                if (dir->isFile())
 
201
                        path->copyFile(RETAIN(to_dir), overwrite);
 
202
                else
 
203
                        path->copyDir(RETAIN(to_dir), overwrite);
 
204
                release_(path);
 
205
        }
 
206
        release_(dir);
 
207
        
 
208
        if (to_dir != in_to_dir)
 
209
                release_(to_dir);
 
210
                
 
211
        release_(in_to_dir);
 
212
        
 
213
        exit_();
 
214
}
 
215
 
 
216
 
 
217
bool CSPath::isLink()
 
218
{
 
219
        bool link;
 
220
        enter_();
 
221
 
 
222
        link = sys_isLink(iPath->getCString());
 
223
        
 
224
        return_(link);
 
225
}
 
226
 
 
227
bool CSPath::isEmpty()
 
228
{
 
229
        CSDirectory *dir = NULL;
 
230
        bool            is_dir, result = true;
 
231
 
 
232
        enter_();
 
233
        if (!exists(&is_dir))
 
234
                return_(true);
 
235
 
 
236
        if (!is_dir)
 
237
                return_(false);
 
238
 
 
239
        dir = openDirectory();
 
240
        push_(dir);
 
241
        
 
242
        if (dir->next())
 
243
                result = false;
 
244
 
 
245
        release_(dir);
 
246
        return_(result);
 
247
}
 
248
 
 
249
void CSPath::emptyDir()
 
250
{
 
251
        CSDirectory *dir;
 
252
        CSPath          *path = NULL;
 
253
        bool            is_dir;
 
254
 
 
255
        enter_();
 
256
        if (!exists(&is_dir))
 
257
                exit_();
 
258
 
 
259
        if (!is_dir)
 
260
                CSException::throwFileError(CS_CONTEXT, iPath, ENOTDIR);
 
261
 
 
262
        dir = openDirectory();
 
263
        push_(dir);
 
264
 
 
265
        while (dir->next()) {
 
266
                path = CSPath::newPath(RETAIN(this), dir->name());
 
267
                push_(path);
 
268
                if (dir->isFile())
 
269
                        path->remove();
 
270
                else
 
271
                        path->removeDir();
 
272
                release_(path);
 
273
        }
 
274
 
 
275
        release_(dir);
 
276
        exit_();
 
277
}
 
278
 
 
279
void CSPath::emptyPath()
 
280
{
 
281
        CSDirectory *dir;
 
282
        CSPath          *path = NULL;
 
283
        bool            is_dir;
 
284
 
 
285
        enter_();
 
286
        if (!exists(&is_dir))
 
287
                exit_();
 
288
 
 
289
        if (!is_dir)
 
290
                CSException::throwFileError(CS_CONTEXT, iPath, ENOTDIR);
 
291
 
 
292
        dir = openDirectory();
 
293
        push_(dir);
 
294
 
 
295
        while (dir->next()) {
 
296
                path = CSPath::newPath(RETAIN(this), dir->name());
 
297
                push_(path);
 
298
                if (dir->isFile())
 
299
                        path->remove();
 
300
                else
 
301
                        path->emptyPath();
 
302
                release_(path);
 
303
        }
 
304
 
 
305
        release_(dir);
 
306
        exit_();
 
307
}
 
308
 
 
309
void CSPath::copyTo(CSPath *to_path, bool overwrite)
 
310
{
 
311
        bool is_dir;
 
312
 
 
313
        enter_();
 
314
        push_(to_path);
 
315
        if (!exists(&is_dir))
 
316
                CSException::throwFileError(CS_CONTEXT, iPath, ENOENT);
 
317
 
 
318
        pop_(to_path);
 
319
        if (is_dir)
 
320
                /* The source is a directory. */
 
321
                copyDir(to_path, overwrite);
 
322
        else {
 
323
                /* The source is not a directory: */
 
324
                copyFile(to_path, overwrite);
 
325
        }
 
326
 
 
327
        exit_();
 
328
}
 
329
 
 
330
void CSPath::moveTo(CSPath *in_to_path)
 
331
{
 
332
        CSPath  *to_path = NULL;
 
333
        bool    is_dir;
 
334
 
 
335
        enter_();
 
336
        push_(in_to_path);
 
337
        
 
338
        if (!exists(NULL))
 
339
                CSException::throwFileError(CS_CONTEXT, iPath, ENOENT);
 
340
 
 
341
        if (in_to_path->exists(&is_dir)) {
 
342
                if (is_dir) {
 
343
                        to_path = CSPath::newPath(RETAIN(in_to_path), getNameCString());
 
344
                        push_(to_path);
 
345
                        if (to_path->exists(NULL))
 
346
                                CSException::throwFileError(CS_CONTEXT, to_path->getCString(), EEXIST);
 
347
                        pop_(to_path);
 
348
                }
 
349
                else
 
350
                        CSException::throwFileError(CS_CONTEXT, to_path->getCString(), ENOTDIR);
 
351
        } else
 
352
                to_path = RETAIN(in_to_path);
 
353
                
 
354
        move(to_path);
 
355
 
 
356
        release_(in_to_path);
 
357
        exit_();
 
358
}
 
359
 
 
360
void CSPath::remove()
 
361
{
 
362
        bool is_dir;
 
363
 
 
364
        if (exists(&is_dir)) {
 
365
                if (is_dir) {
 
366
                        emptyDir();
 
367
                        removeDir();
 
368
                }
 
369
                else
 
370
                        removeFile();
 
371
        }
 
372
}
 
373
 
 
374
 
 
375
void CSPath::touch(bool create_path)
 
376
{
 
377
        CSFile *file;
 
378
 
 
379
        enter_();
 
380
        if (create_path)
 
381
                file = createFile(CSFile::READONLY);
 
382
        else
 
383
                file = openFile(CSFile::READONLY | CSFile::CREATE);
 
384
        file->release();
 
385
        exit_();
 
386
}
 
387
 
 
388
CSString *CSPath::getString()
 
389
{ 
 
390
        return iPath;
 
391
}
 
392
 
 
393
const char *CSPath::getCString()
 
394
{
 
395
        return iPath->getCString();
 
396
}
 
397
 
 
398
const char *CSPath::getNameCString()
 
399
{
 
400
        const char *str = getCString();
 
401
        
 
402
        return cs_last_name_of_path(str);
 
403
}
 
404
 
 
405
off64_t CSPath::getSize(const char *path)
 
406
{
 
407
        off64_t size;
 
408
 
 
409
        info(path, NULL, &size, NULL);
 
410
        return size;
 
411
}
 
412
 
 
413
off64_t CSPath::getSize()
 
414
{
 
415
        off64_t size;
 
416
 
 
417
        info((bool *) NULL, &size, (CSTime *) NULL);
 
418
        return size;
 
419
}
 
420
 
 
421
bool CSPath::isDir()
 
422
{
 
423
        bool    is_dir;
 
424
 
 
425
        info(&is_dir, (off64_t *) NULL, (CSTime *) NULL);
 
426
        return is_dir;
 
427
}
 
428
 
 
429
bool CSPath::exists(bool *is_dir)
 
430
{
 
431
        if (!sys_exists(iPath->getCString()))
 
432
                return false;
 
433
                
 
434
        if (is_dir)
 
435
                *is_dir = isDir();
 
436
        return true;
 
437
}
 
438
 
 
439
void CSPath::info(const char *path, bool *is_dir, off64_t *size, CSTime *mod_time)
 
440
{
 
441
        sys_stat(path, is_dir, size, mod_time);
 
442
        
 
443
}
 
444
 
 
445
void CSPath::info(bool *is_dir, off64_t *size, CSTime *mod_time)
 
446
{
 
447
        info(iPath->getCString(), is_dir, size, mod_time);
 
448
}
 
449
 
 
450
CSFile *CSPath::openFile(int mode)
 
451
{
 
452
        CSFile *file;
 
453
 
 
454
        enter_();
 
455
        file = CSFile::newFile(RETAIN(this));
 
456
        push_(file);
 
457
        file->open(mode);
 
458
        pop_(file);
 
459
        return_(file);
 
460
}
 
461
 
 
462
void CSPath::removeFile()
 
463
{
 
464
        sys_removeFile(iPath->getCString());
 
465
}
 
466
 
 
467
void CSPath::makeDir()
 
468
{
 
469
        char path[PATH_MAX];
 
470
 
 
471
        cs_strcpy(PATH_MAX, path, iPath->getCString());
 
472
        cs_remove_dir_char(path);
 
473
 
 
474
        sys_makeDir(path);
 
475
}
 
476
 
 
477
CSDirectory *CSPath::openDirectory()
 
478
{
 
479
        CSDirectory *dir;
 
480
 
 
481
        enter_();
 
482
        dir = CSDirectory::newDirectory(RETAIN(this));
 
483
        push_(dir);
 
484
        dir->open();
 
485
        pop_(dir);
 
486
        return_(dir);
 
487
}
 
488
 
 
489
void CSPath::removeDir()
 
490
{                       
 
491
        emptyDir();
 
492
        sys_removeDir(iPath->getCString());
 
493
}
 
494
 
 
495
void CSPath::rename(const char *name)
 
496
{
 
497
        char new_path[PATH_MAX];
 
498
        CSString *tmp_path, *old_path = iPath;
 
499
        
 
500
        enter_();
 
501
        
 
502
        cs_strcpy(PATH_MAX, new_path, iPath->getCString());
 
503
        cs_remove_last_name_of_path(new_path);
 
504
        cs_add_dir_char(PATH_MAX, new_path);
 
505
        cs_strcat(PATH_MAX, new_path, name);
 
506
        
 
507
        lock_(&iRename_lock); // protect against race condition when testing if the new name exists yet or not. 
 
508
        if (sys_exists(new_path))
 
509
                CSException::throwFileError(CS_CONTEXT, new_path, EEXIST);
 
510
        
 
511
        tmp_path = CSString::newString(new_path);
 
512
        push_(tmp_path);
 
513
        
 
514
        sys_rename(iPath->getCString(), new_path);
 
515
                
 
516
        pop_(tmp_path);
 
517
        unlock_(&iRename_lock);
 
518
        
 
519
        old_path = iPath;
 
520
        iPath = tmp_path;
 
521
        
 
522
        old_path->release();
 
523
        exit_();
 
524
}
 
525
 
 
526
void CSPath::move(CSPath *to_path)
 
527
{
 
528
        enter_();
 
529
        lock_(&iRename_lock); // protect against race condition when testing if the new name exists yet or not. 
 
530
        if (to_path->exists())
 
531
                CSException::throwFileError(CS_CONTEXT, to_path->getCString(), EEXIST);
 
532
                
 
533
        /* Cannot move from TD to non-TD: */
 
534
        sys_rename(iPath->getCString(), to_path->getCString());
 
535
        unlock_(&iRename_lock);
 
536
        exit_();
 
537
}
 
538
 
 
539
CSPath *CSPath::getCWD()
 
540
{
 
541
        char path[PATH_MAX];
 
542
 
 
543
        sys_getcwd(path, PATH_MAX);
 
544
        return newPath(path);
 
545
}
 
546
 
 
547
CSPath *CSPath::newPath(const char *path)
 
548
{
 
549
        if (!path)
 
550
                CSException::throwAssertion(CS_CONTEXT, "Initial string may not be NULL");
 
551
        return newPath(CSString::newString(path));
 
552
}
 
553
 
 
554
CSPath *CSPath::newPath(CSString *path)
 
555
{
 
556
        CSPath *p;
 
557
 
 
558
        enter_();
 
559
        push_(path);
 
560
        new_(p, CSPath());
 
561
 
 
562
        /* Adjust the path string so that it does not have
 
563
         * a terminating CS_DIR_CHAR:
 
564
         */
 
565
        if (path->endsWith(CS_DIR_DELIM) && path->length() > 1) {
 
566
                p->iPath = path->left(CS_DIR_DELIM, -1);
 
567
                path->release();
 
568
        }
 
569
        else
 
570
                p->iPath = path;
 
571
        pop_(path);
 
572
        return_(p);
 
573
}
 
574
 
 
575
CSPath *CSPath::newPath(CSPath *cwd, const char *path)
 
576
{
 
577
        char abs_path[PATH_MAX];
 
578
 
 
579
        enter_();
 
580
        cs_make_absolute_path(PATH_MAX, abs_path, path, cwd->getCString());
 
581
        cwd->release();
 
582
        CSPath *p = newPath(abs_path);
 
583
        return_(p);
 
584
}
 
585
 
 
586
CSPath *CSPath::newPath(CSString *cwd, const char *path)
 
587
{
 
588
        char abs_path[PATH_MAX];
 
589
 
 
590
        enter_();
 
591
        cs_make_absolute_path(PATH_MAX, abs_path, path, cwd->getCString());
 
592
        cwd->release();
 
593
        CSPath *p = newPath(abs_path);
 
594
        return_(p);
 
595
}
 
596
 
 
597
CSPath *CSPath::newPath(const char *cwd, CSString *path)
 
598
{
 
599
        char abs_path[PATH_MAX];
 
600
 
 
601
        enter_();
 
602
        cs_make_absolute_path(PATH_MAX, abs_path, path->getCString(), cwd);
 
603
        path->release();
 
604
        CSPath *p = newPath(abs_path);
 
605
        return_(p);
 
606
}
 
607
 
 
608
CSPath *CSPath::newPath(const char *cwd, const char *path)
 
609
{
 
610
        char abs_path[PATH_MAX];
 
611
 
 
612
        enter_();
 
613
        cs_make_absolute_path(PATH_MAX, abs_path, path, cwd);
 
614
        CSPath *p = newPath(abs_path);
 
615
        return_(p);
 
616
}
 
617