Mercurial > hg > octave-lyh
annotate liboctave/file-ops.cc @ 10180:be952ce74023
bootstrap.conf fixes
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Thu, 21 Jan 2010 03:25:23 -0500 |
| parents | 326746625a51 |
| children | 0522a65bcd56 |
| rev | line source |
|---|---|
| 1765 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 2000, 2001, 2002, 2003, 2004, 2005, 2006, |
| 8920 | 4 2007, 2008 John W. Eaton |
| 1765 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 1765 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 1765 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 25 #include <config.h> | |
| 26 #endif | |
| 27 | |
| 28 #include <cerrno> | |
| 1802 | 29 #include <cstdio> |
| 30 #include <cstdlib> | |
| 1765 | 31 #include <cstring> |
| 32 | |
| 3503 | 33 #include <iostream> |
| 4726 | 34 #include <vector> |
| 3040 | 35 |
| 2443 | 36 #ifdef HAVE_SYS_TYPES_H |
| 1765 | 37 #include <sys/types.h> |
| 2443 | 38 #endif |
| 2926 | 39 |
| 10179 | 40 #include <pathmax.h> |
| 1765 | 41 |
| 5476 | 42 #include "dir-ops.h" |
| 1765 | 43 #include "file-ops.h" |
| 5476 | 44 #include "file-stat.h" |
| 2926 | 45 #include "oct-env.h" |
| 2934 | 46 #include "oct-passwd.h" |
| 3710 | 47 #include "pathlen.h" |
| 5476 | 48 #include "quit.h" |
| 1775 | 49 #include "statdefs.h" |
| 2926 | 50 #include "str-vec.h" |
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51 #include "oct-locbuf.h" |
| 1765 | 52 |
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53 file_ops::static_members *file_ops::static_members::instance = 0; |
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54 |
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55 file_ops::static_members::static_members (void) |
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56 : |
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57 #if (defined (OCTAVE_HAVE_WINDOWS_FILESYSTEM) && ! defined (OCTAVE_HAVE_POSIX_FILESYSTEM)) |
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58 xdir_sep_char ('\\'), |
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59 xdir_sep_str ("\\"), |
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60 #else |
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61 xdir_sep_char ('/'), |
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62 xdir_sep_str ("/"), |
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63 #endif |
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64 #if defined (OCTAVE_HAVE_WINDOWS_FILESYSTEM) |
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65 xdir_sep_chars ("/\\") |
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66 #else |
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67 xdir_sep_chars (xdir_sep_str) |
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68 #endif |
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69 { } |
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70 |
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71 bool |
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72 file_ops::static_members::instance_ok (void) |
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73 { |
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74 bool retval = true; |
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75 |
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76 if (! instance) |
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77 instance = new static_members (); |
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78 |
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79 if (! instance) |
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80 { |
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81 (*current_liboctave_error_handler) |
| 10180 | 82 ("unable to create file_ops::static_members object!"); |
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83 |
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84 retval = false; |
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85 } |
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86 |
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87 return retval; |
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88 } |
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89 |
| 2433 | 90 // We provide a replacement for mkdir(). |
| 91 | |
| 1765 | 92 int |
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93 file_ops::mkdir (const std::string& nm, mode_t md) |
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94 { |
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95 std::string msg; |
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96 return mkdir (nm, md, msg); |
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97 } |
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98 |
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99 int |
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100 file_ops::mkdir (const std::string& name, mode_t mode, std::string& msg) |
| 2668 | 101 { |
| 3504 | 102 msg = std::string (); |
| 2668 | 103 |
| 2937 | 104 int status = -1; |
| 105 | |
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106 status = octave_mkdir (name.c_str (), mode); |
| 2668 | 107 |
| 108 if (status < 0) | |
| 3504 | 109 { |
| 110 using namespace std; | |
| 111 msg = ::strerror (errno); | |
| 112 } | |
| 2668 | 113 |
| 114 return status; | |
| 115 } | |
| 116 | |
| 2433 | 117 // I don't know how to emulate this on systems that don't provide it. |
| 118 | |
| 1765 | 119 int |
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120 file_ops::mkfifo (const std::string& nm, mode_t md) |
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121 { |
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122 std::string msg; |
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123 return mkfifo (nm, md, msg); |
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124 } |
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125 |
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126 int |
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127 file_ops::mkfifo (const std::string& name, mode_t mode, std::string& msg) |
| 2668 | 128 { |
| 3504 | 129 msg = std::string (); |
| 2668 | 130 |
| 2937 | 131 int status = -1; |
| 132 | |
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133 // With gnulib we will always have mkfifo, but some systems like MinGW |
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134 // don't have working mkfifo functions. On those systems, mkfifo will |
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135 // always return -1 and set errno. |
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136 |
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137 status = octave_mkfifo (name.c_str (), mode); |
| 2668 | 138 |
| 139 if (status < 0) | |
| 3504 | 140 { |
| 141 using namespace std; | |
| 142 msg = ::strerror (errno); | |
| 143 } | |
| 2668 | 144 |
| 145 return status; | |
| 146 } | |
| 147 | |
| 3710 | 148 // I don't know how to emulate this on systems that don't provide it. |
| 149 | |
| 150 int | |
| 151 file_ops::link (const std::string& old_name, const std::string& new_name) | |
| 152 { | |
| 153 std::string msg; | |
| 154 return link (old_name, new_name, msg); | |
| 155 } | |
| 156 | |
| 157 int | |
| 158 file_ops::link (const std::string& old_name, | |
| 10180 | 159 const std::string& new_name, std::string& msg) |
| 3710 | 160 { |
| 161 msg = std::string (); | |
| 162 | |
| 163 int status = -1; | |
| 164 | |
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165 status = octave_link (old_name.c_str (), new_name.c_str ()); |
| 3710 | 166 |
| 167 if (status < 0) | |
| 168 { | |
| 169 using namespace std; | |
| 170 msg = ::strerror (errno); | |
| 171 } | |
| 172 | |
| 173 return status; | |
| 174 } | |
| 175 | |
| 176 // I don't know how to emulate this on systems that don't provide it. | |
| 177 | |
| 178 int | |
| 179 file_ops::symlink (const std::string& old_name, const std::string& new_name) | |
| 180 { | |
| 181 std::string msg; | |
| 182 return symlink (old_name, new_name, msg); | |
| 183 } | |
| 184 | |
| 185 int | |
| 186 file_ops::symlink (const std::string& old_name, | |
| 10180 | 187 const std::string& new_name, std::string& msg) |
| 3710 | 188 { |
| 189 msg = std::string (); | |
| 190 | |
| 191 int status = -1; | |
| 192 | |
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193 status = octave_symlink (old_name.c_str (), new_name.c_str ()); |
| 3710 | 194 |
| 195 if (status < 0) | |
| 196 { | |
| 197 using namespace std; | |
| 198 msg = ::strerror (errno); | |
| 199 } | |
| 200 | |
| 201 return status; | |
| 202 } | |
| 203 | |
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204 // We provide a replacement for readlink(). |
| 3710 | 205 |
| 206 int | |
| 207 file_ops::readlink (const std::string& path, std::string& result) | |
| 208 { | |
| 209 std::string msg; | |
| 210 return readlink (path, result, msg); | |
| 211 } | |
| 212 | |
| 213 int | |
| 214 file_ops::readlink (const std::string& path, std::string& result, | |
| 10180 | 215 std::string& msg) |
| 3710 | 216 { |
| 217 int status = -1; | |
| 218 | |
| 219 msg = std::string (); | |
| 220 | |
| 221 char buf[MAXPATHLEN+1]; | |
| 222 | |
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223 status = octave_readlink (path.c_str (), buf, MAXPATHLEN); |
| 3710 | 224 |
| 225 if (status < 0) | |
| 226 { | |
| 227 using namespace std; | |
| 228 msg = ::strerror (errno); | |
| 229 } | |
| 230 else | |
| 231 { | |
| 232 buf[status] = '\0'; | |
| 3769 | 233 result = std::string (buf); |
| 3710 | 234 status = 0; |
| 235 } | |
| 236 | |
| 237 return status; | |
| 238 } | |
| 239 | |
| 2433 | 240 // We provide a replacement for rename(). |
| 241 | |
| 1765 | 242 int |
| 3504 | 243 file_ops::rename (const std::string& from, const std::string& to) |
| 1765 | 244 { |
| 3504 | 245 std::string msg; |
| 2937 | 246 return rename (from, to, msg); |
| 1765 | 247 } |
| 248 | |
| 2668 | 249 int |
| 3504 | 250 file_ops::rename (const std::string& from, const std::string& to, |
| 10180 | 251 std::string& msg) |
| 2668 | 252 { |
| 2937 | 253 int status = -1; |
| 254 | |
| 3504 | 255 msg = std::string (); |
| 2668 | 256 |
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257 status = octave_rename (from.c_str (), to.c_str ()); |
| 2668 | 258 |
| 259 if (status < 0) | |
| 3504 | 260 { |
| 261 using namespace std; | |
| 262 msg = ::strerror (errno); | |
| 263 } | |
| 2668 | 264 |
| 265 return status; | |
| 266 } | |
| 267 | |
| 2433 | 268 // We provide a replacement for rmdir(). |
| 269 | |
| 1765 | 270 int |
| 3504 | 271 file_ops::rmdir (const std::string& name) |
| 1765 | 272 { |
| 3504 | 273 std::string msg; |
| 2937 | 274 return rmdir (name, msg); |
| 1765 | 275 } |
| 276 | |
| 2668 | 277 int |
| 3504 | 278 file_ops::rmdir (const std::string& name, std::string& msg) |
| 2668 | 279 { |
| 3504 | 280 msg = std::string (); |
| 2668 | 281 |
| 2937 | 282 int status = -1; |
| 283 | |
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284 status = octave_rmdir (name.c_str ()); |
| 2668 | 285 |
| 286 if (status < 0) | |
| 3504 | 287 { |
| 288 using namespace std; | |
| 289 msg = ::strerror (errno); | |
| 290 } | |
| 2668 | 291 |
| 292 return status; | |
| 293 } | |
| 294 | |
| 5476 | 295 // And a version that works recursively. |
| 296 | |
| 297 int | |
| 298 file_ops::recursive_rmdir (const std::string& name) | |
| 299 { | |
| 300 std::string msg; | |
| 301 return recursive_rmdir (name, msg); | |
| 302 } | |
| 303 | |
| 304 int | |
| 305 file_ops::recursive_rmdir (const std::string& name, std::string& msg) | |
| 306 { | |
| 307 msg = std::string (); | |
| 308 | |
| 309 int status = 0; | |
| 310 | |
| 311 dir_entry dir (name); | |
| 312 | |
| 313 if (dir) | |
| 314 { | |
| 315 string_vector dirlist = dir.read (); | |
| 316 | |
| 317 for (octave_idx_type i = 0; i < dirlist.length (); i++) | |
| 10180 | 318 { |
| 319 octave_quit (); | |
| 5476 | 320 |
| 10180 | 321 std::string nm = dirlist[i]; |
| 5476 | 322 |
| 10180 | 323 // Skip current directory and parent. |
| 324 if (nm == "." || nm == "..") | |
| 325 continue; | |
| 5476 | 326 |
| 10180 | 327 std::string fullnm = name + file_ops::dir_sep_str () + nm; |
| 5476 | 328 |
| 10180 | 329 // Get info about the file. Don't follow links. |
| 330 file_stat fs (fullnm, false); | |
| 5476 | 331 |
| 10180 | 332 if (fs) |
| 333 { | |
| 334 if (fs.is_dir ()) | |
| 335 { | |
| 336 status = recursive_rmdir (fullnm, msg); | |
| 5476 | 337 |
| 10180 | 338 if (status < 0) |
| 339 break; | |
| 340 } | |
| 341 else | |
| 342 { | |
| 343 status = unlink (fullnm, msg); | |
| 5476 | 344 |
| 10180 | 345 if (status < 0) |
| 346 break; | |
| 347 } | |
| 348 } | |
| 349 else | |
| 350 { | |
| 351 msg = fs.error (); | |
| 352 break; | |
| 353 } | |
| 354 } | |
| 5476 | 355 |
| 356 if (status >= 0) | |
| 10180 | 357 { |
| 358 dir.close (); | |
| 359 status = file_ops::rmdir (name, msg); | |
| 360 } | |
| 5476 | 361 } |
| 362 else | |
| 363 { | |
| 364 status = -1; | |
| 365 | |
| 366 msg = dir.error (); | |
| 367 } | |
| 368 | |
| 369 return status; | |
| 370 } | |
| 371 | |
| 5138 | 372 std::string |
| 373 file_ops::canonicalize_file_name (const std::string& name) | |
| 374 { | |
| 375 std::string msg; | |
| 376 return canonicalize_file_name (name, msg); | |
| 377 } | |
| 378 | |
| 379 std::string | |
| 380 file_ops::canonicalize_file_name (const std::string& name, std::string& msg) | |
| 381 { | |
| 382 msg = std::string (); | |
| 383 | |
| 384 std::string retval; | |
| 385 | |
| 386 #if defined (HAVE_CANONICALIZE_FILE_NAME) | |
| 387 | |
| 388 char *tmp = ::canonicalize_file_name (name.c_str ()); | |
| 389 | |
| 390 if (tmp) | |
| 391 { | |
| 392 retval = tmp; | |
| 393 ::free (tmp); | |
| 394 } | |
| 395 | |
| 396 #elif defined (HAVE_RESOLVEPATH) | |
| 397 | |
| 398 #if !defined (errno) | |
| 399 extern int errno; | |
| 400 #endif | |
| 401 | |
| 402 #if !defined (__set_errno) | |
| 403 # define __set_errno(Val) errno = (Val) | |
| 404 #endif | |
| 405 | |
| 406 if (name.empty ()) | |
| 407 { | |
| 408 __set_errno (ENOENT); | |
| 409 return retval; | |
| 410 } | |
| 411 | |
| 412 // All known hosts with resolvepath (e.g. Solaris 7) don't turn | |
| 413 // relative names into absolute ones, so prepend the working | |
| 414 // directory if the path is not absolute. | |
| 415 | |
| 5149 | 416 std::string absolute_name |
| 417 = octave_env::make_absolute (name, octave_env::getcwd ()); | |
| 5138 | 418 |
| 5149 | 419 size_t resolved_size = absolute_name.length (); |
| 5138 | 420 |
| 6208 | 421 while (true) |
| 5138 | 422 { |
| 423 resolved_size = 2 * resolved_size + 1; | |
| 424 | |
| 425 OCTAVE_LOCAL_BUFFER (char, resolved, resolved_size); | |
| 426 | |
| 5149 | 427 int resolved_len |
| 10180 | 428 = ::resolvepath (absolute_name.c_str (), resolved, resolved_size); |
| 5138 | 429 |
| 430 if (resolved_len < 0) | |
| 10180 | 431 break; |
| 5138 | 432 |
| 433 if (resolved_len < resolved_size) | |
| 10180 | 434 { |
| 435 retval = resolved; | |
| 436 break; | |
| 437 } | |
| 5138 | 438 } |
| 439 | |
| 6208 | 440 #elif defined (__WIN32__) |
| 441 | |
| 442 int n = 1024; | |
| 443 | |
| 444 std::string win_path (n, '\0'); | |
| 445 | |
| 446 while (true) | |
| 447 { | |
| 7520 | 448 int status = GetFullPathName (name.c_str (), n, &win_path[0], 0); |
| 6208 | 449 |
| 450 if (status == 0) | |
| 451 break; | |
| 452 else if (status < n) | |
| 453 { | |
| 454 win_path.resize (status); | |
| 10180 | 455 retval = win_path; |
| 456 break; | |
| 6208 | 457 } |
| 458 else | |
| 459 { | |
| 460 n *= 2; | |
| 10180 | 461 win_path.resize (n); |
| 6208 | 462 } |
| 463 } | |
| 464 | |
| 6271 | 465 #elif defined (HAVE_REALPATH) |
| 466 | |
| 467 #if !defined (__set_errno) | |
| 468 # define __set_errno(Val) errno = (Val) | |
| 469 #endif | |
| 470 | |
| 471 if (name.empty ()) | |
| 472 { | |
| 473 __set_errno (ENOENT); | |
| 474 return retval; | |
| 475 } | |
| 476 | |
| 477 OCTAVE_LOCAL_BUFFER (char, buf, PATH_MAX); | |
| 478 | |
| 6273 | 479 if (::realpath (name.c_str (), buf)) |
| 480 retval = buf; | |
| 6271 | 481 |
| 5138 | 482 #else |
| 483 | |
| 5775 | 484 // FIXME -- provide replacement here... |
| 5138 | 485 retval = name; |
| 486 | |
| 487 #endif | |
| 488 | |
| 489 if (retval.empty ()) | |
| 490 { | |
| 491 using namespace std; | |
| 492 msg = ::strerror (errno); | |
| 493 } | |
| 494 | |
| 495 return retval; | |
| 496 } | |
| 497 | |
| 2433 | 498 // We provide a replacement for tempnam(). |
| 499 | |
| 3504 | 500 std::string |
| 501 file_ops::tempnam (const std::string& dir, const std::string& pfx) | |
| 1802 | 502 { |
| 3504 | 503 std::string msg; |
| 2937 | 504 return tempnam (dir, pfx, msg); |
| 505 } | |
| 506 | |
| 3504 | 507 std::string |
| 508 file_ops::tempnam (const std::string& dir, const std::string& pfx, | |
| 10180 | 509 std::string& msg) |
| 2937 | 510 { |
| 3504 | 511 msg = std::string (); |
| 2937 | 512 |
| 3504 | 513 std::string retval; |
| 2937 | 514 |
| 515 const char *pdir = dir.empty () ? 0 : dir.c_str (); | |
| 1802 | 516 |
| 2937 | 517 const char *ppfx = pfx.empty () ? 0 : pfx.c_str (); |
| 518 | |
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519 char *tmp = octave_tempnam (pdir, ppfx); |
| 1802 | 520 |
| 521 if (tmp) | |
| 522 { | |
| 523 retval = tmp; | |
| 524 | |
| 2937 | 525 ::free (tmp); |
| 1802 | 526 } |
| 527 else | |
| 3504 | 528 { |
| 529 using namespace std; | |
| 530 msg = ::strerror (errno); | |
| 531 } | |
| 1802 | 532 |
| 533 return retval; | |
| 534 } | |
| 535 | |
| 3040 | 536 // The following tilde-expansion code was stolen and adapted from |
| 537 // readline. | |
| 2926 | 538 |
| 3040 | 539 // The default value of tilde_additional_prefixes. This is set to |
| 540 // whitespace preceding a tilde so that simple programs which do not | |
| 541 // perform any word separation get desired behaviour. | |
| 542 static const char *default_prefixes[] = { " ~", "\t~", ":~", 0 }; | |
| 543 | |
| 544 // The default value of tilde_additional_suffixes. This is set to | |
| 545 // whitespace or newline so that simple programs which do not perform | |
| 546 // any word separation get desired behaviour. | |
| 547 static const char *default_suffixes[] = { " ", "\n", ":", 0 }; | |
| 548 | |
| 549 // If non-null, this contains the address of a function that the | |
| 550 // application wants called before trying the standard tilde | |
| 551 // expansions. The function is called with the text sans tilde, and | |
| 552 // returns a malloc()'ed string which is the expansion, or a NULL | |
| 553 // pointer if the expansion fails. | |
| 554 file_ops::tilde_expansion_hook file_ops::tilde_expansion_preexpansion_hook = 0; | |
| 555 | |
| 556 // If non-null, this contains the address of a function to call if the | |
| 557 // standard meaning for expanding a tilde fails. The function is | |
| 558 // called with the text (sans tilde, as in "foo"), and returns a | |
| 559 // malloc()'ed string which is the expansion, or a NULL pointer if | |
| 560 // there is no expansion. | |
| 561 file_ops::tilde_expansion_hook file_ops::tilde_expansion_failure_hook = 0; | |
| 562 | |
| 563 // When non-null, this is a NULL terminated array of strings which are | |
| 564 // duplicates for a tilde prefix. Bash uses this to expand `=~' and | |
| 565 // `:~'. | |
| 566 string_vector file_ops::tilde_additional_prefixes = default_prefixes; | |
| 567 | |
| 568 // When non-null, this is a NULL terminated array of strings which | |
| 569 // match the end of a username, instead of just "/". Bash sets this | |
| 570 // to `:' and `=~'. | |
| 571 string_vector file_ops::tilde_additional_suffixes = default_suffixes; | |
| 572 | |
| 573 // Find the start of a tilde expansion in S, and return the index | |
| 574 // of the tilde which starts the expansion. Place the length of the | |
| 575 // text which identified this tilde starter in LEN, excluding the | |
| 576 // tilde itself. | |
| 577 | |
| 578 static size_t | |
| 3504 | 579 tilde_find_prefix (const std::string& s, size_t& len) |
| 3040 | 580 { |
| 581 len = 0; | |
| 582 | |
| 583 size_t s_len = s.length (); | |
| 584 | |
| 585 if (s_len == 0 || s[0] == '~') | |
| 586 return 0; | |
| 587 | |
| 588 string_vector prefixes = file_ops::tilde_additional_prefixes; | |
| 589 | |
| 590 if (! prefixes.empty ()) | |
| 591 { | |
| 592 for (size_t i = 0; i < s_len; i++) | |
| 10180 | 593 { |
| 594 for (int j = 0; j < prefixes.length (); j++) | |
| 595 { | |
| 596 size_t pfx_len = prefixes[j].length (); | |
| 3040 | 597 |
| 10180 | 598 if (prefixes[j].compare (s.substr (i, pfx_len)) == 0) |
| 599 { | |
| 600 len = pfx_len - 1; | |
| 601 return i + len; | |
| 602 } | |
| 603 } | |
| 604 } | |
| 3040 | 605 } |
| 606 | |
| 607 return s_len; | |
| 608 } | |
| 609 | |
| 610 // Find the end of a tilde expansion in S, and return the index | |
| 611 // of the character which ends the tilde definition. | |
| 612 | |
| 613 static size_t | |
| 3504 | 614 tilde_find_suffix (const std::string& s) |
| 3040 | 615 { |
| 616 size_t s_len = s.length (); | |
| 617 | |
| 618 string_vector suffixes = file_ops::tilde_additional_suffixes; | |
| 619 | |
| 620 size_t i = 0; | |
| 621 | |
| 622 for ( ; i < s_len; i++) | |
| 623 { | |
| 6694 | 624 if (file_ops::is_dir_sep (s[i])) |
| 10180 | 625 break; |
| 3040 | 626 |
| 627 if (! suffixes.empty ()) | |
| 10180 | 628 { |
| 629 for (int j = 0; j < suffixes.length (); j++) | |
| 630 { | |
| 631 size_t sfx_len = suffixes[j].length (); | |
| 3040 | 632 |
| 10180 | 633 if (suffixes[j].compare (s.substr (i, sfx_len)) == 0) |
| 634 return i; | |
| 635 } | |
| 636 } | |
| 3040 | 637 } |
| 638 | |
| 639 return i; | |
| 640 } | |
| 641 | |
| 642 // Take FNAME and return the tilde prefix we want expanded. | |
| 643 | |
| 3504 | 644 static std::string |
| 645 isolate_tilde_prefix (const std::string& fname) | |
| 3040 | 646 { |
| 647 size_t f_len = fname.length (); | |
| 648 | |
| 649 size_t len = 1; | |
| 650 | |
| 6694 | 651 while (len < f_len && ! file_ops::is_dir_sep (fname[len])) |
| 3040 | 652 len++; |
| 653 | |
| 654 return fname.substr (1, len); | |
| 655 } | |
| 656 | |
| 657 // Do the work of tilde expansion on FILENAME. FILENAME starts with a | |
| 658 // tilde. | |
| 659 | |
| 3504 | 660 static std::string |
| 661 tilde_expand_word (const std::string& filename) | |
| 3040 | 662 { |
| 663 size_t f_len = filename.length (); | |
| 664 | |
| 665 if (f_len == 0 || filename[0] != '~') | |
| 666 return filename; | |
| 667 | |
| 668 // A leading `~/' or a bare `~' is *always* translated to the value | |
| 669 // of $HOME or the home directory of the current user, regardless of | |
| 670 // any preexpansion hook. | |
| 671 | |
| 6694 | 672 if (f_len == 1 || file_ops::is_dir_sep (filename[1])) |
| 3040 | 673 return octave_env::get_home_directory () + filename.substr (1); |
| 674 | |
| 3504 | 675 std::string username = isolate_tilde_prefix (filename); |
| 3040 | 676 |
| 677 size_t user_len = username.length (); | |
| 678 | |
| 3504 | 679 std::string dirname; |
| 3040 | 680 |
| 681 if (file_ops::tilde_expansion_preexpansion_hook) | |
| 682 { | |
| 3504 | 683 std::string expansion |
| 10180 | 684 = file_ops::tilde_expansion_preexpansion_hook (username); |
| 3040 | 685 |
| 686 if (! expansion.empty ()) | |
| 10180 | 687 return expansion + filename.substr (user_len+1); |
| 3040 | 688 } |
| 689 | |
| 690 // No preexpansion hook, or the preexpansion hook failed. Look in the | |
| 691 // password database. | |
| 692 | |
| 693 octave_passwd pw = octave_passwd::getpwnam (username); | |
| 694 | |
| 695 if (! pw) | |
| 696 { | |
| 697 // If the calling program has a special syntax for expanding tildes, | |
| 698 // and we couldn't find a standard expansion, then let them try. | |
| 699 | |
| 700 if (file_ops::tilde_expansion_failure_hook) | |
| 10180 | 701 { |
| 702 std::string expansion | |
| 703 = file_ops::tilde_expansion_failure_hook (username); | |
| 3040 | 704 |
| 10180 | 705 if (! expansion.empty ()) |
| 706 dirname = expansion + filename.substr (user_len+1); | |
| 707 } | |
| 3040 | 708 |
| 709 // If we don't have a failure hook, or if the failure hook did not | |
| 710 // expand the tilde, return a copy of what we were passed. | |
| 711 | |
| 712 if (dirname.length () == 0) | |
| 10180 | 713 dirname = filename; |
| 3040 | 714 } |
| 715 else | |
| 3074 | 716 dirname = pw.dir () + filename.substr (user_len+1); |
| 3040 | 717 |
| 718 return dirname; | |
| 719 } | |
| 720 | |
| 721 // If NAME has a leading ~ or ~user, Unix-style, expand it to the | |
| 722 // user's home directory. If no ~, or no <pwd.h>, just return NAME. | |
| 723 | |
| 3504 | 724 std::string |
| 725 file_ops::tilde_expand (const std::string& name) | |
| 2926 | 726 { |
|
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727 if (name.find ('~') == std::string::npos) |
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728 return name; |
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729 else |
| 3040 | 730 { |
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731 std::string result; |
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732 |
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733 size_t name_len = name.length (); |
| 2926 | 734 |
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735 // Scan through S expanding tildes as we come to them. |
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736 |
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737 size_t pos = 0; |
| 3040 | 738 |
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739 while (1) |
| 10180 | 740 { |
| 741 if (pos > name_len) | |
| 742 break; | |
| 3040 | 743 |
| 10180 | 744 size_t len; |
|
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745 |
| 10180 | 746 // Make START point to the tilde which starts the expansion. |
| 2926 | 747 |
| 10180 | 748 size_t start = tilde_find_prefix (name.substr (pos), len); |
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749 |
| 10180 | 750 result.append (name.substr (pos, start)); |
| 3040 | 751 |
| 10180 | 752 // Advance STRING to the starting tilde. |
| 2926 | 753 |
| 10180 | 754 pos += start; |
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755 |
| 10180 | 756 // Make FINI be the index of one after the last character of the |
| 757 // username. | |
| 2926 | 758 |
| 10180 | 759 size_t fini = tilde_find_suffix (name.substr (pos)); |
| 2926 | 760 |
| 10180 | 761 // If both START and FINI are zero, we are all done. |
| 2926 | 762 |
| 10180 | 763 if (! (start || fini)) |
| 764 break; | |
| 2926 | 765 |
| 10180 | 766 // Expand the entire tilde word, and copy it into RESULT. |
| 2947 | 767 |
| 10180 | 768 std::string tilde_word = name.substr (pos, fini); |
| 3040 | 769 |
| 10180 | 770 pos += fini; |
| 2926 | 771 |
| 10180 | 772 std::string expansion = tilde_expand_word (tilde_word); |
| 3040 | 773 |
| 10180 | 774 result.append (expansion); |
| 775 } | |
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776 |
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|
777 return result; |
| 2926 | 778 } |
| 779 } | |
| 780 | |
| 781 // A vector version of the above. | |
| 782 | |
| 783 string_vector | |
| 784 file_ops::tilde_expand (const string_vector& names) | |
| 785 { | |
| 786 string_vector retval; | |
| 787 | |
| 788 int n = names.length (); | |
| 789 | |
| 790 retval.resize (n); | |
| 791 | |
| 792 for (int i = 0; i < n; i++) | |
| 793 retval[i] = file_ops::tilde_expand (names[i]); | |
| 794 | |
| 795 return retval; | |
| 796 } | |
| 1802 | 797 |
| 1765 | 798 int |
| 2926 | 799 file_ops::umask (mode_t mode) |
| 1765 | 800 { |
| 10173 | 801 return octave_umask (mode); |
| 1765 | 802 } |
| 803 | |
| 1773 | 804 int |
| 3504 | 805 file_ops::unlink (const std::string& name) |
| 1773 | 806 { |
| 3504 | 807 std::string msg; |
| 2937 | 808 return unlink (name, msg); |
| 1773 | 809 } |
| 810 | |
| 2668 | 811 int |
| 3504 | 812 file_ops::unlink (const std::string& name, std::string& msg) |
| 2668 | 813 { |
| 3504 | 814 msg = std::string (); |
| 2668 | 815 |
| 2937 | 816 int status = -1; |
| 817 | |
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818 status = octave_unlink (name.c_str ()); |
| 2668 | 819 |
| 820 if (status < 0) | |
| 3504 | 821 { |
| 822 using namespace std; | |
| 823 msg = ::strerror (errno); | |
| 824 } | |
| 2668 | 825 |
| 826 return status; | |
| 827 } | |
| 828 | |
| 7272 | 829 std::string |
| 830 file_ops::concat (const std::string& dir, const std::string& file) | |
| 831 { | |
| 832 return dir.empty () | |
| 833 ? file | |
| 834 : (is_dir_sep (dir[dir.length()-1]) | |
| 835 ? dir + file | |
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836 : dir + file_ops::dir_sep_char () + file); |
| 7272 | 837 } |