Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 1 | // Copyright (C) 1999-2005 Open Source Telecom Corporation. |
| 2 | // Copyright (C) 2006-2010 David Sugar, Tycho Softworks. |
| 3 | // |
| 4 | // This program is free software; you can redistribute it and/or modify |
| 5 | // it under the terms of the GNU General Public License as published by |
| 6 | // the Free Software Foundation; either version 2 of the License, or |
| 7 | // (at your option) any later version. |
| 8 | // |
| 9 | // This program is distributed in the hope that it will be useful, |
| 10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | // GNU General Public License for more details. |
| 13 | // |
| 14 | // You should have received a copy of the GNU General Public License |
| 15 | // along with this program; if not, write to the Free Software |
| 16 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | // |
| 18 | // As a special exception, you may use this file as part of a free software |
| 19 | // library without restriction. Specifically, if other files instantiate |
| 20 | // templates or use macros or inline functions from this file, or you compile |
| 21 | // this file and link it with other files to produce an executable, this |
| 22 | // file does not by itself cause the resulting executable to be covered by |
| 23 | // the GNU General Public License. This exception does not however |
| 24 | // invalidate any other reasons why the executable file might be covered by |
| 25 | // the GNU General Public License. |
| 26 | // |
| 27 | // This exception applies only to the code released under the name GNU |
| 28 | // Common C++. If you copy code from other releases into a copy of GNU |
| 29 | // Common C++, as the General Public License permits, the exception does |
| 30 | // not apply to the code that you add in this way. To avoid misleading |
| 31 | // anyone as to the status of such modified files, you must delete |
| 32 | // this exception notice from them. |
| 33 | // |
| 34 | // If you write modifications of your own for GNU Common C++, it is your choice |
| 35 | // whether to permit this exception to apply to your modifications. |
| 36 | // If you do not wish that, delete this exception notice. |
| 37 | // |
| 38 | |
| 39 | #include <cc++/config.h> |
| 40 | #include <cc++/export.h> |
| 41 | #include <cc++/exception.h> |
| 42 | #include <cc++/file.h> |
| 43 | #include "private.h" |
| 44 | |
| 45 | #ifdef WIN32 |
| 46 | #include <sys/stat.h> |
| 47 | #include <malloc.h> |
| 48 | #endif |
| 49 | |
| 50 | #ifdef CCXX_NAMESPACES |
| 51 | namespace ost { |
| 52 | using namespace std; |
| 53 | #endif |
| 54 | |
| 55 | Dir::Dir(const char *fname) : |
| 56 | #ifdef WIN32 |
| 57 | hDir(INVALID_HANDLE_VALUE), name(NULL) |
| 58 | #else |
| 59 | dir(NULL) |
| 60 | #endif |
| 61 | { |
| 62 | #ifdef HAVE_READDIR_R |
| 63 | save = reinterpret_cast<struct dirent*>(save_space); |
| 64 | #endif |
| 65 | if(fname) |
| 66 | open(fname); |
| 67 | } |
| 68 | |
| 69 | bool Dir::create(const char *path, Attr attr) |
| 70 | { |
| 71 | long xmask = 0; |
| 72 | bool rtn = true; |
| 73 | #ifdef WIN32 |
| 74 | |
| 75 | // fixme: make it form a security attributes structure |
| 76 | |
| 77 | if(!CreateDirectory(path, NULL)) |
| 78 | rtn = false; |
| 79 | #else |
| 80 | switch(attr) { |
| 81 | case attrPublic: |
| 82 | xmask |= S_IXOTH; |
| 83 | case attrGroup: |
| 84 | xmask |= S_IXGRP; |
| 85 | case attrPrivate: |
| 86 | xmask |= S_IXUSR; |
| 87 | break; |
| 88 | default: |
| 89 | return false; |
| 90 | } |
| 91 | if(mkdir(path, (long)attr | xmask)) |
| 92 | rtn = false; |
| 93 | #endif |
| 94 | return rtn; |
| 95 | } |
| 96 | |
| 97 | bool Dir::remove(const char *path) |
| 98 | { |
| 99 | bool rtn = true; |
| 100 | #ifdef WIN32 |
| 101 | if(!RemoveDirectory(path)) |
| 102 | rtn = false; |
| 103 | #else |
| 104 | if(rmdir(path)) |
| 105 | rtn = false; |
| 106 | #endif |
| 107 | return rtn; |
| 108 | } |
| 109 | |
| 110 | bool Dir::setPrefix(const char *prefix) |
| 111 | { |
| 112 | bool rtn = true; |
| 113 | |
| 114 | #ifdef WIN32 |
| 115 | if(!SetCurrentDirectory(prefix)) |
| 116 | rtn = false; |
| 117 | #else |
| 118 | if(chdir(prefix)) |
| 119 | rtn = false; |
| 120 | #endif |
| 121 | return rtn; |
| 122 | } |
| 123 | |
| 124 | bool Dir::getPrefix(char *prefix, size_t size) |
| 125 | { |
| 126 | bool rtn = true; |
| 127 | |
| 128 | #ifdef WIN32 |
| 129 | if(!GetCurrentDirectory((DWORD)size, prefix)) |
| 130 | rtn = false; |
| 131 | #else |
| 132 | if(getcwd(prefix, size) == NULL) |
| 133 | rtn = false; |
| 134 | #endif |
| 135 | return rtn; |
| 136 | } |
| 137 | |
| 138 | void Dir::open(const char *fname) |
| 139 | { |
| 140 | #ifdef WIN32 |
| 141 | size_t len = strlen(fname) + 4; |
| 142 | char *path; |
| 143 | #endif |
| 144 | |
| 145 | close(); |
| 146 | #ifdef WIN32 |
| 147 | DWORD attr = GetFileAttributes(fname); |
| 148 | if( (attr == (DWORD)~0l) || !(attr & FILE_ATTRIBUTE_DIRECTORY) ) { |
| 149 | #ifdef CCXX_EXCEPTIONS |
| 150 | if(Thread::getException() == Thread::throwObject) |
| 151 | throw(this); |
| 152 | #ifdef COMMON_STD_EXCEPTION |
| 153 | else if(Thread::getException() == Thread::throwException) |
| 154 | throw(DirException(String(fname) + ": failed")); |
| 155 | #endif |
| 156 | #endif |
| 157 | } |
| 158 | |
| 159 | path = (char *)alloca(len + 1); |
| 160 | if(path) |
| 161 | snprintf(path, len + 1, "%s", fname); |
| 162 | #ifdef CCXX_EXCEPTIONS |
| 163 | if (!path && Thread::getException() == Thread::throwObject) |
| 164 | throw(this); |
| 165 | #ifdef COMMON_STD_EXCEPTION |
| 166 | else if(!path && Thread::getException() == Thread::throwException) |
| 167 | throw(DirException(String(fname) + ": failed")); |
| 168 | #endif |
| 169 | #endif |
| 170 | addString(path, len, "\\*"); |
| 171 | hDir = FindFirstFile(path, &fdata); |
| 172 | if(hDir != INVALID_HANDLE_VALUE) |
| 173 | name = fdata.cFileName; |
| 174 | memcpy(&data, &fdata, sizeof(fdata)); |
| 175 | |
| 176 | #else // WIN32 |
| 177 | entry = NULL; |
| 178 | dir = opendir(fname); |
| 179 | #ifdef CCXX_EXCEPTIONS |
| 180 | if(!dir && Thread::getException() == Thread::throwObject) |
| 181 | throw(this); |
| 182 | #ifdef COMMON_STD_EXCEPTION |
| 183 | else if(!dir && Thread::getException() == Thread::throwException) |
| 184 | throw(DirException(String(fname) + ": failed")); |
| 185 | #endif |
| 186 | #endif |
| 187 | #endif // WIN32 |
| 188 | } |
| 189 | |
| 190 | Dir::~Dir() |
| 191 | { |
| 192 | close(); |
| 193 | } |
| 194 | |
| 195 | void Dir::close(void) |
| 196 | { |
| 197 | #ifdef WIN32 |
| 198 | if(hDir != INVALID_HANDLE_VALUE) |
| 199 | FindClose(hDir); |
| 200 | hDir = INVALID_HANDLE_VALUE; |
| 201 | #else |
| 202 | if(dir) |
| 203 | closedir(dir); |
| 204 | dir = NULL; |
| 205 | entry = NULL; |
| 206 | #endif |
| 207 | } |
| 208 | |
| 209 | bool Dir::rewind(void) |
| 210 | { |
| 211 | bool rtn = true; |
| 212 | #ifdef WIN32 |
| 213 | memcpy(&data, &fdata, sizeof(data)); |
| 214 | name = fdata.cFileName; |
| 215 | #else |
| 216 | if(!dir) |
| 217 | rtn = false; |
| 218 | else |
| 219 | rewinddir(dir); |
| 220 | #endif |
| 221 | return rtn; |
| 222 | } |
| 223 | |
| 224 | bool Dir::isValid(void) |
| 225 | { |
| 226 | #ifdef WIN32 |
| 227 | if(hDir == INVALID_HANDLE_VALUE) |
| 228 | #else |
| 229 | if(!dir) |
| 230 | #endif |
| 231 | return false; |
| 232 | |
| 233 | return true; |
| 234 | } |
| 235 | |
| 236 | const char *Dir::operator*() |
| 237 | { |
| 238 | #ifdef WIN32 |
| 239 | return name; |
| 240 | #else |
| 241 | if(!dir) |
| 242 | return NULL; |
| 243 | |
| 244 | if(!entry) |
| 245 | return getName(); |
| 246 | |
| 247 | return entry->d_name; |
| 248 | #endif |
| 249 | } |
| 250 | |
| 251 | const char *Dir::getName(void) |
| 252 | { |
| 253 | #ifdef WIN32 |
| 254 | char *retname = name; |
| 255 | |
| 256 | if(hDir == INVALID_HANDLE_VALUE) |
| 257 | return NULL; |
| 258 | |
| 259 | if(retname) { |
| 260 | name = NULL; |
| 261 | if(FindNextFile(hDir, &data)) |
| 262 | name = data.cFileName; |
| 263 | } |
| 264 | return retname; |
| 265 | |
| 266 | #else |
| 267 | if(!dir) |
| 268 | return NULL; |
| 269 | |
| 270 | #ifdef HAVE_READDIR_R |
| 271 | readdir_r(dir, save, &entry); |
| 272 | #else |
| 273 | entry = readdir(dir); |
| 274 | #endif |
| 275 | if(!entry) |
| 276 | return NULL; |
| 277 | |
| 278 | return entry->d_name; |
| 279 | #endif // WIN32 |
| 280 | } |
| 281 | |
| 282 | DirTree::DirTree(const char *prefix, unsigned depth) |
| 283 | { |
| 284 | max = ++depth; |
| 285 | dir = new Dir[depth]; |
| 286 | current = 0; |
| 287 | |
| 288 | open(prefix); |
| 289 | } |
| 290 | |
| 291 | DirTree::DirTree(unsigned depth) |
| 292 | { |
| 293 | max = ++depth; |
| 294 | dir = new Dir[depth]; |
| 295 | current = 0; |
| 296 | } |
| 297 | |
| 298 | void DirTree::open(const char *prefix) |
| 299 | { |
| 300 | char *cp; |
| 301 | |
| 302 | close(); |
| 303 | |
| 304 | if(!isDir(prefix)) |
| 305 | return; |
| 306 | |
| 307 | snprintf(path, sizeof(path), "%s/", prefix); |
| 308 | prefixpos = (unsigned)strlen(path) - 1; |
| 309 | |
| 310 | while(NULL != (cp = strchr(path, '\\'))) |
| 311 | *cp = '/'; |
| 312 | |
| 313 | while(prefixpos && path[prefixpos - 1] == '/') |
| 314 | path[prefixpos--] = 0; |
| 315 | |
| 316 | dir[current++].open(prefix); |
| 317 | } |
| 318 | |
| 319 | DirTree::~DirTree() |
| 320 | { |
| 321 | close(); |
| 322 | |
| 323 | if(dir) |
| 324 | delete[] dir; |
| 325 | |
| 326 | dir = NULL; |
| 327 | } |
| 328 | |
| 329 | unsigned DirTree::perform(const char *prefix) |
| 330 | { |
| 331 | unsigned count = 0; |
| 332 | |
| 333 | open(prefix); |
| 334 | while(NULL != (getPath())) |
| 335 | ++count; |
| 336 | close(); |
| 337 | return count; |
| 338 | } |
| 339 | |
| 340 | void DirTree::close(void) |
| 341 | { |
| 342 | while(current--) |
| 343 | dir[current].close(); |
| 344 | |
| 345 | current = 0; |
| 346 | } |
| 347 | |
| 348 | |
| 349 | bool DirTree::filter(const char *path, struct stat *ino) |
| 350 | { |
| 351 | path = strrchr(path, '/'); |
| 352 | |
| 353 | if(path) |
| 354 | ++path; |
| 355 | else |
| 356 | return false; |
| 357 | |
| 358 | if(!strcmp(path, ".")) |
| 359 | return false; |
| 360 | |
| 361 | if(!strcmp(path, "..")) |
| 362 | return false; |
| 363 | |
| 364 | if(!ino) |
| 365 | return false; |
| 366 | |
| 367 | return true; |
| 368 | } |
| 369 | |
| 370 | char *DirTree::getPath(void) |
| 371 | { |
| 372 | char *cp; |
| 373 | const char *name; |
| 374 | struct stat ino; |
| 375 | bool flag; |
| 376 | |
| 377 | while(current) { |
| 378 | cp = strrchr(path, '/'); |
| 379 | name = dir[current - 1].getName(); |
| 380 | if(!name) { |
| 381 | *cp = 0; |
| 382 | dir[--current].close(); |
| 383 | continue; |
| 384 | } |
| 385 | snprintf(cp + 1, sizeof(path) - strlen(path) - 2, "%s", name); |
| 386 | |
| 387 | if(::stat(path, &ino)) { |
| 388 | ino.st_mode = 0; |
| 389 | flag = filter(path, NULL); |
| 390 | } |
| 391 | else |
| 392 | flag = filter(path, &ino); |
| 393 | |
| 394 | if(!flag) |
| 395 | continue; |
| 396 | |
| 397 | if((ino.st_mode & S_IFMT) == S_IFDIR) { |
| 398 | if(!canAccess(path)) |
| 399 | break; |
| 400 | |
| 401 | if(current < max) |
| 402 | dir[current++].open(path); |
| 403 | |
| 404 | snprintf(path + strlen(path), sizeof(path) - strlen(path), "/"); |
| 405 | } |
| 406 | break; |
| 407 | } |
| 408 | if(!current) |
| 409 | return NULL; |
| 410 | |
| 411 | return path; |
| 412 | } |
| 413 | |
| 414 | #ifdef CCXX_NAMESPACES |
| 415 | } |
| 416 | #endif |
| 417 | |
| 418 | /** EMACS ** |
| 419 | * Local variables: |
| 420 | * mode: c++ |
| 421 | * c-basic-offset: 4 |
| 422 | * End: |
| 423 | */ |