annotate vamp-sdk/hostext/PluginLoader.cpp @ 78:6bf198e06d72 vamp-plugin-sdk-v1.1

* doc updates
author cannam
date Thu, 23 Aug 2007 10:31:46 +0000
parents 0f8524203677
children c94c066a4897
rev   line source
cannam@64 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
cannam@64 2
cannam@64 3 /*
cannam@64 4 Vamp
cannam@64 5
cannam@64 6 An API for audio analysis and feature extraction plugins.
cannam@64 7
cannam@64 8 Centre for Digital Music, Queen Mary, University of London.
cannam@71 9 Copyright 2006-2007 Chris Cannam and QMUL.
cannam@64 10
cannam@64 11 Permission is hereby granted, free of charge, to any person
cannam@64 12 obtaining a copy of this software and associated documentation
cannam@64 13 files (the "Software"), to deal in the Software without
cannam@64 14 restriction, including without limitation the rights to use, copy,
cannam@64 15 modify, merge, publish, distribute, sublicense, and/or sell copies
cannam@64 16 of the Software, and to permit persons to whom the Software is
cannam@64 17 furnished to do so, subject to the following conditions:
cannam@64 18
cannam@64 19 The above copyright notice and this permission notice shall be
cannam@64 20 included in all copies or substantial portions of the Software.
cannam@64 21
cannam@64 22 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
cannam@64 23 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
cannam@64 24 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
cannam@64 25 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
cannam@64 26 ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
cannam@64 27 CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
cannam@64 28 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
cannam@64 29
cannam@64 30 Except as contained in this notice, the names of the Centre for
cannam@64 31 Digital Music; Queen Mary, University of London; and Chris Cannam
cannam@64 32 shall not be used in advertising or otherwise to promote the sale,
cannam@64 33 use or other dealings in this Software without prior written
cannam@64 34 authorization.
cannam@64 35 */
cannam@64 36
cannam@64 37 #include "vamp-sdk/PluginHostAdapter.h"
cannam@64 38 #include "PluginLoader.h"
cannam@64 39 #include "PluginInputDomainAdapter.h"
cannam@64 40 #include "PluginChannelAdapter.h"
cannam@64 41
cannam@64 42 #include <fstream>
cannam@75 43 #include <cctype> // tolower
cannam@64 44
cannam@64 45 #ifdef _WIN32
cannam@64 46
cannam@64 47 #include <windows.h>
cannam@64 48 #include <tchar.h>
cannam@64 49 #define PLUGIN_SUFFIX "dll"
cannam@64 50
cannam@64 51 #else /* ! _WIN32 */
cannam@64 52
cannam@64 53 #include <dirent.h>
cannam@64 54 #include <dlfcn.h>
cannam@64 55
cannam@64 56 #ifdef __APPLE__
cannam@64 57 #define PLUGIN_SUFFIX "dylib"
cannam@64 58 #else /* ! __APPLE__ */
cannam@64 59 #define PLUGIN_SUFFIX "so"
cannam@64 60 #endif /* ! __APPLE__ */
cannam@64 61
cannam@64 62 #endif /* ! _WIN32 */
cannam@64 63
cannam@64 64 using namespace std;
cannam@64 65
cannam@64 66 namespace Vamp {
cannam@64 67
cannam@64 68 namespace HostExt {
cannam@64 69
cannam@69 70 class PluginLoader::Impl
cannam@69 71 {
cannam@69 72 public:
cannam@72 73 Impl();
cannam@72 74 virtual ~Impl();
cannam@69 75
cannam@69 76 PluginKeyList listPlugins();
cannam@69 77
cannam@69 78 Plugin *loadPlugin(PluginKey key,
cannam@69 79 float inputSampleRate,
cannam@69 80 int adapterFlags);
cannam@69 81
cannam@69 82 PluginKey composePluginKey(string libraryName, string identifier);
cannam@69 83
cannam@69 84 PluginCategoryHierarchy getPluginCategory(PluginKey key);
cannam@69 85
cannam@72 86 string getLibraryPathForPlugin(PluginKey key);
cannam@69 87
cannam@69 88 protected:
cannam@69 89 class PluginDeletionNotifyAdapter : public PluginWrapper {
cannam@69 90 public:
cannam@69 91 PluginDeletionNotifyAdapter(Plugin *plugin, Impl *loader);
cannam@69 92 virtual ~PluginDeletionNotifyAdapter();
cannam@69 93 protected:
cannam@69 94 Impl *m_loader;
cannam@69 95 };
cannam@69 96
cannam@69 97 virtual void pluginDeleted(PluginDeletionNotifyAdapter *adapter);
cannam@69 98
cannam@72 99 map<PluginKey, string> m_pluginLibraryNameMap;
cannam@72 100 bool m_allPluginsEnumerated;
cannam@72 101 void enumeratePlugins(PluginKey forPlugin = "");
cannam@69 102
cannam@72 103 map<PluginKey, PluginCategoryHierarchy> m_taxonomy;
cannam@69 104 void generateTaxonomy();
cannam@69 105
cannam@72 106 map<Plugin *, void *> m_pluginLibraryHandleMap;
cannam@69 107
cannam@72 108 bool decomposePluginKey(PluginKey key,
cannam@72 109 string &libraryName, string &identifier);
cannam@72 110
cannam@72 111 void *loadLibrary(string path);
cannam@69 112 void unloadLibrary(void *handle);
cannam@69 113 void *lookupInLibrary(void *handle, const char *symbol);
cannam@69 114
cannam@72 115 string splicePath(string a, string b);
cannam@72 116 vector<string> listFiles(string dir, string ext);
cannam@69 117 };
cannam@69 118
cannam@64 119 PluginLoader *
cannam@64 120 PluginLoader::m_instance = 0;
cannam@64 121
cannam@64 122 PluginLoader::PluginLoader()
cannam@64 123 {
cannam@69 124 m_impl = new Impl();
cannam@64 125 }
cannam@64 126
cannam@64 127 PluginLoader::~PluginLoader()
cannam@64 128 {
cannam@69 129 delete m_impl;
cannam@64 130 }
cannam@64 131
cannam@64 132 PluginLoader *
cannam@64 133 PluginLoader::getInstance()
cannam@64 134 {
cannam@64 135 if (!m_instance) m_instance = new PluginLoader();
cannam@64 136 return m_instance;
cannam@64 137 }
cannam@64 138
cannam@64 139 vector<PluginLoader::PluginKey>
cannam@64 140 PluginLoader::listPlugins()
cannam@64 141 {
cannam@69 142 return m_impl->listPlugins();
cannam@69 143 }
cannam@69 144
cannam@69 145 Plugin *
cannam@69 146 PluginLoader::loadPlugin(PluginKey key,
cannam@69 147 float inputSampleRate,
cannam@69 148 int adapterFlags)
cannam@69 149 {
cannam@69 150 return m_impl->loadPlugin(key, inputSampleRate, adapterFlags);
cannam@69 151 }
cannam@69 152
cannam@69 153 PluginLoader::PluginKey
cannam@69 154 PluginLoader::composePluginKey(string libraryName, string identifier)
cannam@69 155 {
cannam@69 156 return m_impl->composePluginKey(libraryName, identifier);
cannam@69 157 }
cannam@69 158
cannam@69 159 PluginLoader::PluginCategoryHierarchy
cannam@69 160 PluginLoader::getPluginCategory(PluginKey key)
cannam@69 161 {
cannam@69 162 return m_impl->getPluginCategory(key);
cannam@69 163 }
cannam@69 164
cannam@69 165 string
cannam@69 166 PluginLoader::getLibraryPathForPlugin(PluginKey key)
cannam@69 167 {
cannam@69 168 return m_impl->getLibraryPathForPlugin(key);
cannam@69 169 }
cannam@72 170
cannam@72 171 PluginLoader::Impl::Impl() :
cannam@72 172 m_allPluginsEnumerated(false)
cannam@72 173 {
cannam@72 174 }
cannam@72 175
cannam@72 176 PluginLoader::Impl::~Impl()
cannam@72 177 {
cannam@72 178 }
cannam@69 179
cannam@69 180 vector<PluginLoader::PluginKey>
cannam@69 181 PluginLoader::Impl::listPlugins()
cannam@69 182 {
cannam@72 183 if (!m_allPluginsEnumerated) enumeratePlugins();
cannam@64 184
cannam@64 185 vector<PluginKey> plugins;
cannam@72 186 for (map<PluginKey, string>::iterator mi = m_pluginLibraryNameMap.begin();
cannam@64 187 mi != m_pluginLibraryNameMap.end(); ++mi) {
cannam@64 188 plugins.push_back(mi->first);
cannam@64 189 }
cannam@64 190
cannam@64 191 return plugins;
cannam@64 192 }
cannam@64 193
cannam@64 194 void
cannam@72 195 PluginLoader::Impl::enumeratePlugins(PluginKey forPlugin)
cannam@64 196 {
cannam@64 197 vector<string> path = PluginHostAdapter::getPluginPath();
cannam@64 198
cannam@72 199 string libraryName, identifier;
cannam@72 200 if (forPlugin != "") {
cannam@72 201 if (!decomposePluginKey(forPlugin, libraryName, identifier)) {
cannam@72 202 std::cerr << "WARNING: Vamp::HostExt::PluginLoader: Invalid plugin key \""
cannam@72 203 << forPlugin << "\" in enumerate" << std::endl;
cannam@72 204 return;
cannam@72 205 }
cannam@72 206 }
cannam@72 207
cannam@64 208 for (size_t i = 0; i < path.size(); ++i) {
cannam@64 209
cannam@64 210 vector<string> files = listFiles(path[i], PLUGIN_SUFFIX);
cannam@64 211
cannam@64 212 for (vector<string>::iterator fi = files.begin();
cannam@64 213 fi != files.end(); ++fi) {
cannam@64 214
cannam@72 215 if (libraryName != "") {
cannam@73 216 // libraryName is lowercased and lacking an extension,
cannam@73 217 // as it came from the plugin key
cannam@73 218 string temp = *fi;
cannam@73 219 for (size_t i = 0; i < temp.length(); ++i) {
cannam@75 220 temp[i] = tolower(temp[i]);
cannam@73 221 }
cannam@73 222 string::size_type pi = temp.find('.');
cannam@72 223 if (pi == string::npos) {
cannam@73 224 if (libraryName != temp) continue;
cannam@72 225 } else {
cannam@73 226 if (libraryName != temp.substr(0, pi)) continue;
cannam@72 227 }
cannam@72 228 }
cannam@72 229
cannam@64 230 string fullPath = path[i];
cannam@64 231 fullPath = splicePath(fullPath, *fi);
cannam@64 232 void *handle = loadLibrary(fullPath);
cannam@64 233 if (!handle) continue;
cannam@64 234
cannam@64 235 VampGetPluginDescriptorFunction fn =
cannam@64 236 (VampGetPluginDescriptorFunction)lookupInLibrary
cannam@64 237 (handle, "vampGetPluginDescriptor");
cannam@64 238
cannam@64 239 if (!fn) {
cannam@64 240 unloadLibrary(handle);
cannam@64 241 continue;
cannam@64 242 }
cannam@64 243
cannam@64 244 int index = 0;
cannam@64 245 const VampPluginDescriptor *descriptor = 0;
cannam@64 246
cannam@64 247 while ((descriptor = fn(VAMP_API_VERSION, index))) {
cannam@72 248 ++index;
cannam@72 249 if (identifier != "") {
cannam@72 250 if (descriptor->identifier != identifier) continue;
cannam@72 251 }
cannam@64 252 PluginKey key = composePluginKey(*fi, descriptor->identifier);
cannam@72 253 // std::cerr << "enumerate: " << key << " (path: " << fullPath << ")" << std::endl;
cannam@64 254 if (m_pluginLibraryNameMap.find(key) ==
cannam@64 255 m_pluginLibraryNameMap.end()) {
cannam@64 256 m_pluginLibraryNameMap[key] = fullPath;
cannam@64 257 }
cannam@64 258 }
cannam@64 259
cannam@64 260 unloadLibrary(handle);
cannam@64 261 }
cannam@64 262 }
cannam@72 263
cannam@72 264 if (forPlugin == "") m_allPluginsEnumerated = true;
cannam@64 265 }
cannam@64 266
cannam@64 267 PluginLoader::PluginKey
cannam@69 268 PluginLoader::Impl::composePluginKey(string libraryName, string identifier)
cannam@64 269 {
cannam@64 270 string basename = libraryName;
cannam@64 271
cannam@64 272 string::size_type li = basename.rfind('/');
cannam@64 273 if (li != string::npos) basename = basename.substr(li + 1);
cannam@64 274
cannam@64 275 li = basename.find('.');
cannam@64 276 if (li != string::npos) basename = basename.substr(0, li);
cannam@64 277
cannam@73 278 for (size_t i = 0; i < basename.length(); ++i) {
cannam@75 279 basename[i] = tolower(basename[i]);
cannam@73 280 }
cannam@73 281
cannam@64 282 return basename + ":" + identifier;
cannam@64 283 }
cannam@64 284
cannam@72 285 bool
cannam@72 286 PluginLoader::Impl::decomposePluginKey(PluginKey key,
cannam@72 287 string &libraryName,
cannam@72 288 string &identifier)
cannam@72 289 {
cannam@72 290 string::size_type ki = key.find(':');
cannam@72 291 if (ki == string::npos) {
cannam@72 292 return false;
cannam@72 293 }
cannam@72 294
cannam@72 295 libraryName = key.substr(0, ki);
cannam@72 296 identifier = key.substr(ki + 1);
cannam@72 297 return true;
cannam@72 298 }
cannam@72 299
cannam@64 300 PluginLoader::PluginCategoryHierarchy
cannam@69 301 PluginLoader::Impl::getPluginCategory(PluginKey plugin)
cannam@64 302 {
cannam@64 303 if (m_taxonomy.empty()) generateTaxonomy();
cannam@69 304 if (m_taxonomy.find(plugin) == m_taxonomy.end()) {
cannam@69 305 return PluginCategoryHierarchy();
cannam@69 306 }
cannam@64 307 return m_taxonomy[plugin];
cannam@64 308 }
cannam@64 309
cannam@64 310 string
cannam@69 311 PluginLoader::Impl::getLibraryPathForPlugin(PluginKey plugin)
cannam@64 312 {
cannam@72 313 if (m_pluginLibraryNameMap.find(plugin) == m_pluginLibraryNameMap.end()) {
cannam@72 314 if (m_allPluginsEnumerated) return "";
cannam@72 315 enumeratePlugins(plugin);
cannam@72 316 }
cannam@72 317 if (m_pluginLibraryNameMap.find(plugin) == m_pluginLibraryNameMap.end()) {
cannam@72 318 return "";
cannam@72 319 }
cannam@64 320 return m_pluginLibraryNameMap[plugin];
cannam@64 321 }
cannam@64 322
cannam@64 323 Plugin *
cannam@69 324 PluginLoader::Impl::loadPlugin(PluginKey key,
cannam@69 325 float inputSampleRate, int adapterFlags)
cannam@64 326 {
cannam@72 327 string libname, identifier;
cannam@72 328 if (!decomposePluginKey(key, libname, identifier)) {
cannam@72 329 std::cerr << "Vamp::HostExt::PluginLoader: Invalid plugin key \""
cannam@72 330 << key << "\" in loadPlugin" << std::endl;
cannam@72 331 return 0;
cannam@72 332 }
cannam@72 333
cannam@64 334 string fullPath = getLibraryPathForPlugin(key);
cannam@64 335 if (fullPath == "") return 0;
cannam@64 336
cannam@64 337 void *handle = loadLibrary(fullPath);
cannam@64 338 if (!handle) return 0;
cannam@64 339
cannam@64 340 VampGetPluginDescriptorFunction fn =
cannam@64 341 (VampGetPluginDescriptorFunction)lookupInLibrary
cannam@64 342 (handle, "vampGetPluginDescriptor");
cannam@64 343
cannam@64 344 if (!fn) {
cannam@64 345 unloadLibrary(handle);
cannam@64 346 return 0;
cannam@64 347 }
cannam@64 348
cannam@64 349 int index = 0;
cannam@64 350 const VampPluginDescriptor *descriptor = 0;
cannam@64 351
cannam@64 352 while ((descriptor = fn(VAMP_API_VERSION, index))) {
cannam@64 353
cannam@64 354 if (string(descriptor->identifier) == identifier) {
cannam@64 355
cannam@64 356 Vamp::PluginHostAdapter *plugin =
cannam@64 357 new Vamp::PluginHostAdapter(descriptor, inputSampleRate);
cannam@64 358
cannam@64 359 Plugin *adapter = new PluginDeletionNotifyAdapter(plugin, this);
cannam@64 360
cannam@64 361 m_pluginLibraryHandleMap[adapter] = handle;
cannam@64 362
cannam@64 363 if (adapterFlags & ADAPT_INPUT_DOMAIN) {
cannam@64 364 if (adapter->getInputDomain() == Plugin::FrequencyDomain) {
cannam@64 365 adapter = new PluginInputDomainAdapter(adapter);
cannam@64 366 }
cannam@64 367 }
cannam@64 368
cannam@64 369 if (adapterFlags & ADAPT_CHANNEL_COUNT) {
cannam@64 370 adapter = new PluginChannelAdapter(adapter);
cannam@64 371 }
cannam@64 372
cannam@64 373 return adapter;
cannam@64 374 }
cannam@64 375
cannam@64 376 ++index;
cannam@64 377 }
cannam@64 378
cannam@64 379 cerr << "Vamp::HostExt::PluginLoader: Plugin \""
cannam@64 380 << identifier << "\" not found in library \""
cannam@64 381 << fullPath << "\"" << endl;
cannam@64 382
cannam@64 383 return 0;
cannam@64 384 }
cannam@64 385
cannam@64 386 void
cannam@69 387 PluginLoader::Impl::generateTaxonomy()
cannam@64 388 {
cannam@69 389 // cerr << "PluginLoader::Impl::generateTaxonomy" << endl;
cannam@64 390
cannam@64 391 vector<string> path = PluginHostAdapter::getPluginPath();
cannam@64 392 string libfragment = "/lib/";
cannam@64 393 vector<string> catpath;
cannam@64 394
cannam@64 395 string suffix = "cat";
cannam@64 396
cannam@64 397 for (vector<string>::iterator i = path.begin();
cannam@64 398 i != path.end(); ++i) {
cannam@64 399
cannam@64 400 // It doesn't matter that we're using literal forward-slash in
cannam@64 401 // this bit, as it's only relevant if the path contains
cannam@64 402 // "/lib/", which is only meaningful and only plausible on
cannam@64 403 // systems with forward-slash delimiters
cannam@64 404
cannam@64 405 string dir = *i;
cannam@64 406 string::size_type li = dir.find(libfragment);
cannam@64 407
cannam@64 408 if (li != string::npos) {
cannam@64 409 catpath.push_back
cannam@64 410 (dir.substr(0, li)
cannam@64 411 + "/share/"
cannam@64 412 + dir.substr(li + libfragment.length()));
cannam@64 413 }
cannam@64 414
cannam@64 415 catpath.push_back(dir);
cannam@64 416 }
cannam@64 417
cannam@64 418 char buffer[1024];
cannam@64 419
cannam@64 420 for (vector<string>::iterator i = catpath.begin();
cannam@64 421 i != catpath.end(); ++i) {
cannam@64 422
cannam@64 423 vector<string> files = listFiles(*i, suffix);
cannam@64 424
cannam@64 425 for (vector<string>::iterator fi = files.begin();
cannam@64 426 fi != files.end(); ++fi) {
cannam@64 427
cannam@64 428 string filepath = splicePath(*i, *fi);
cannam@64 429 ifstream is(filepath.c_str(), ifstream::in | ifstream::binary);
cannam@64 430
cannam@64 431 if (is.fail()) {
cannam@64 432 // cerr << "failed to open: " << filepath << endl;
cannam@64 433 continue;
cannam@64 434 }
cannam@64 435
cannam@64 436 // cerr << "opened: " << filepath << endl;
cannam@64 437
cannam@64 438 while (!!is.getline(buffer, 1024)) {
cannam@64 439
cannam@64 440 string line(buffer);
cannam@64 441
cannam@64 442 // cerr << "line = " << line << endl;
cannam@64 443
cannam@64 444 string::size_type di = line.find("::");
cannam@64 445 if (di == string::npos) continue;
cannam@64 446
cannam@64 447 string id = line.substr(0, di);
cannam@64 448 string encodedCat = line.substr(di + 2);
cannam@64 449
cannam@64 450 if (id.substr(0, 5) != "vamp:") continue;
cannam@64 451 id = id.substr(5);
cannam@64 452
cannam@64 453 while (encodedCat.length() >= 1 &&
cannam@64 454 encodedCat[encodedCat.length()-1] == '\r') {
cannam@64 455 encodedCat = encodedCat.substr(0, encodedCat.length()-1);
cannam@64 456 }
cannam@64 457
cannam@64 458 // cerr << "id = " << id << ", cat = " << encodedCat << endl;
cannam@64 459
cannam@64 460 PluginCategoryHierarchy category;
cannam@64 461 string::size_type ai;
cannam@64 462 while ((ai = encodedCat.find(" > ")) != string::npos) {
cannam@64 463 category.push_back(encodedCat.substr(0, ai));
cannam@64 464 encodedCat = encodedCat.substr(ai + 3);
cannam@64 465 }
cannam@64 466 if (encodedCat != "") category.push_back(encodedCat);
cannam@64 467
cannam@64 468 m_taxonomy[id] = category;
cannam@64 469 }
cannam@64 470 }
cannam@64 471 }
cannam@64 472 }
cannam@64 473
cannam@64 474 void *
cannam@69 475 PluginLoader::Impl::loadLibrary(string path)
cannam@64 476 {
cannam@64 477 void *handle = 0;
cannam@64 478 #ifdef _WIN32
cannam@64 479 handle = LoadLibrary(path.c_str());
cannam@64 480 if (!handle) {
cannam@64 481 cerr << "Vamp::HostExt::PluginLoader: Unable to load library \""
cannam@64 482 << path << "\"" << endl;
cannam@64 483 }
cannam@64 484 #else
cannam@64 485 handle = dlopen(path.c_str(), RTLD_LAZY);
cannam@64 486 if (!handle) {
cannam@64 487 cerr << "Vamp::HostExt::PluginLoader: Unable to load library \""
cannam@64 488 << path << "\": " << dlerror() << endl;
cannam@64 489 }
cannam@64 490 #endif
cannam@64 491 return handle;
cannam@64 492 }
cannam@64 493
cannam@64 494 void
cannam@69 495 PluginLoader::Impl::unloadLibrary(void *handle)
cannam@64 496 {
cannam@64 497 #ifdef _WIN32
cannam@64 498 FreeLibrary((HINSTANCE)handle);
cannam@64 499 #else
cannam@64 500 dlclose(handle);
cannam@64 501 #endif
cannam@64 502 }
cannam@64 503
cannam@64 504 void *
cannam@69 505 PluginLoader::Impl::lookupInLibrary(void *handle, const char *symbol)
cannam@64 506 {
cannam@64 507 #ifdef _WIN32
cannam@64 508 return (void *)GetProcAddress((HINSTANCE)handle, symbol);
cannam@64 509 #else
cannam@64 510 return (void *)dlsym(handle, symbol);
cannam@64 511 #endif
cannam@64 512 }
cannam@64 513
cannam@64 514 string
cannam@69 515 PluginLoader::Impl::splicePath(string a, string b)
cannam@64 516 {
cannam@64 517 #ifdef _WIN32
cannam@64 518 return a + "\\" + b;
cannam@64 519 #else
cannam@64 520 return a + "/" + b;
cannam@64 521 #endif
cannam@64 522 }
cannam@64 523
cannam@64 524 vector<string>
cannam@69 525 PluginLoader::Impl::listFiles(string dir, string extension)
cannam@64 526 {
cannam@64 527 vector<string> files;
cannam@64 528
cannam@64 529 #ifdef _WIN32
cannam@64 530
cannam@64 531 string expression = dir + "\\*." + extension;
cannam@64 532 WIN32_FIND_DATA data;
cannam@64 533 HANDLE fh = FindFirstFile(expression.c_str(), &data);
cannam@64 534 if (fh == INVALID_HANDLE_VALUE) return files;
cannam@64 535
cannam@64 536 bool ok = true;
cannam@64 537 while (ok) {
cannam@64 538 files.push_back(data.cFileName);
cannam@64 539 ok = FindNextFile(fh, &data);
cannam@64 540 }
cannam@64 541
cannam@64 542 FindClose(fh);
cannam@64 543
cannam@64 544 #else
cannam@78 545
cannam@78 546 size_t extlen = extension.length();
cannam@64 547 DIR *d = opendir(dir.c_str());
cannam@64 548 if (!d) return files;
cannam@64 549
cannam@64 550 struct dirent *e = 0;
cannam@64 551 while ((e = readdir(d))) {
cannam@64 552
cannam@64 553 if (!(e->d_type & DT_REG) || !e->d_name) continue;
cannam@64 554
cannam@64 555 size_t len = strlen(e->d_name);
cannam@64 556 if (len < extlen + 2 ||
cannam@64 557 e->d_name + len - extlen - 1 != "." + extension) {
cannam@64 558 continue;
cannam@64 559 }
cannam@64 560
cannam@64 561 files.push_back(e->d_name);
cannam@64 562 }
cannam@64 563
cannam@64 564 closedir(d);
cannam@64 565 #endif
cannam@64 566
cannam@64 567 return files;
cannam@64 568 }
cannam@64 569
cannam@64 570 void
cannam@69 571 PluginLoader::Impl::pluginDeleted(PluginDeletionNotifyAdapter *adapter)
cannam@64 572 {
cannam@64 573 void *handle = m_pluginLibraryHandleMap[adapter];
cannam@64 574 if (handle) unloadLibrary(handle);
cannam@64 575 m_pluginLibraryHandleMap.erase(adapter);
cannam@64 576 }
cannam@64 577
cannam@69 578 PluginLoader::Impl::PluginDeletionNotifyAdapter::PluginDeletionNotifyAdapter(Plugin *plugin,
cannam@69 579 Impl *loader) :
cannam@64 580 PluginWrapper(plugin),
cannam@64 581 m_loader(loader)
cannam@64 582 {
cannam@64 583 }
cannam@64 584
cannam@69 585 PluginLoader::Impl::PluginDeletionNotifyAdapter::~PluginDeletionNotifyAdapter()
cannam@64 586 {
cannam@64 587 // We need to delete the plugin before calling pluginDeleted, as
cannam@64 588 // the delete call may require calling through to the descriptor
cannam@64 589 // (for e.g. cleanup) but pluginDeleted may unload the required
cannam@64 590 // library for the call. To prevent a double deletion when our
cannam@64 591 // parent's destructor runs (after this one), be sure to set
cannam@64 592 // m_plugin to 0 after deletion.
cannam@64 593 delete m_plugin;
cannam@64 594 m_plugin = 0;
cannam@64 595
cannam@64 596 if (m_loader) m_loader->pluginDeleted(this);
cannam@64 597 }
cannam@64 598
cannam@64 599 }
cannam@64 600
cannam@64 601 }