2 Copyright (c) 2001, Loki software, inc.
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34 // - Directories should be searched in the following order: ~/.q3a/baseq3,
35 // install dir (/usr/local/games/quake3/baseq3) and cd_path (/mnt/cdrom/baseq3).
37 // - Pak files are searched first inside the directories.
38 // - Case insensitive.
39 // - Unix-style slashes (/) (windows is backwards .. everyone knows that)
41 // Leonardo Zide (leo@lokigames.com)
48 #include <glib/gslist.h>
49 #include <glib/gdir.h>
50 #include <glib/gstrfuncs.h>
52 #include "qerplugin.h"
53 #include "idatastream.h"
55 ArchiveModules& FileSystemQ3API_getArchiveModules();
56 #include "ifilesystem.h"
58 #include "generic/callback.h"
59 #include "string/string.h"
60 #include "stream/stringstream.h"
62 #include "moduleobservers.h"
71 #define gamemode_get GlobalRadiant().getGameMode
75 // =============================================================================
78 Archive* OpenArchive(const char* name);
80 struct archive_entry_t
89 typedef std::list<archive_entry_t> archives_t;
91 static archives_t g_archives;
92 static char g_strDirs[VFS_MAXDIRS][PATH_MAX+1];
94 static bool g_bUsePak = true;
96 ModuleObservers g_observers;
98 // =============================================================================
101 static void AddSlash (char *str)
103 std::size_t n = strlen (str);
106 if (str[n-1] != '\\' && str[n-1] != '/')
108 globalErrorStream() << "WARNING: directory path does not end with separator: " << str << "\n";
114 static void FixDOSName (char *src)
116 if (src == 0 || strchr(src, '\\') == 0)
119 globalErrorStream() << "WARNING: invalid path separator '\\': " << src << "\n";
131 const _QERArchiveTable* GetArchiveTable(ArchiveModules& archiveModules, const char* ext)
133 StringOutputStream tmp(16);
134 tmp << LowerCase(ext);
135 return archiveModules.findModule(tmp.c_str());
137 static void InitPakFile (ArchiveModules& archiveModules, const char *filename)
139 const _QERArchiveTable* table = GetArchiveTable(archiveModules, path_get_extension(filename));
143 archive_entry_t entry;
144 entry.name = filename;
145 entry.archive = table->m_pfnOpenArchive(filename);
146 entry.is_pakfile = true;
147 g_archives.push_back(entry);
148 globalOutputStream() << " pak file: " << filename << "\n";
152 inline void pathlist_prepend_unique(GSList*& pathlist, char* path)
154 if(g_slist_find_custom(pathlist, path, (GCompareFunc)path_compare) == 0)
156 pathlist = g_slist_prepend(pathlist, path);
164 class DirectoryListVisitor : public Archive::Visitor
167 const char* m_directory;
169 DirectoryListVisitor(GSList*& matches, const char* directory)
170 : m_matches(matches), m_directory(directory)
172 void visit(const char* name)
174 const char* subname = path_make_relative(name, m_directory);
177 if(subname[0] == '/')
179 char* dir = g_strdup(subname);
180 char* last_char = dir + strlen(dir);
181 if(last_char != dir && *(--last_char) == '/')
183 pathlist_prepend_unique(m_matches, dir);
188 class FileListVisitor : public Archive::Visitor
191 const char* m_directory;
192 const char* m_extension;
194 FileListVisitor(GSList*& matches, const char* directory, const char* extension)
195 : m_matches(matches), m_directory(directory), m_extension(extension)
197 void visit(const char* name)
199 const char* subname = path_make_relative(name, m_directory);
202 if(subname[0] == '/')
204 if(m_extension[0] == '*' || extension_equal(path_get_extension(subname), m_extension))
205 pathlist_prepend_unique(m_matches, g_strdup (subname));
210 static GSList* GetListInternal (const char *refdir, const char *ext, bool directories, std::size_t depth)
214 ASSERT_MESSAGE(refdir[strlen(refdir) - 1] == '/', "search path does not end in '/'");
218 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
220 DirectoryListVisitor visitor(files, refdir);
221 (*i).archive->forEachFile(Archive::VisitorFunc(visitor, Archive::eDirectories, depth), refdir);
226 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
228 FileListVisitor visitor(files, refdir, ext);
229 (*i).archive->forEachFile(Archive::VisitorFunc(visitor, Archive::eFiles, depth), refdir);
233 files = g_slist_reverse(files);
238 inline int ascii_to_upper(int c)
240 if (c >= 'a' && c <= 'z')
242 return c - ('a' - 'A');
248 This behaves identically to stricmp(a,b), except that ASCII chars
249 [\]^`_ come AFTER alphabet chars instead of before. This is because
250 it converts all alphabet chars to uppercase before comparison,
251 while stricmp converts them to lowercase.
253 static int string_compare_nocase_upper(const char* a, const char* b)
257 int c1 = ascii_to_upper(*a++);
258 int c2 = ascii_to_upper(*b++);
275 // Arnout: note - sort pakfiles in reverse order. This ensures that
276 // later pakfiles override earlier ones. This because the vfs module
277 // returns a filehandle to the first file it can find (while it should
278 // return the filehandle to the file in the most overriding pakfile, the
279 // last one in the list that is).
281 //!\todo Analyse the code in rtcw/q3 to see which order it sorts pak files.
285 bool operator()(const CopiedString& self, const CopiedString& other) const
287 return string_compare_nocase_upper(self.c_str(), other.c_str()) > 0;
291 typedef std::set<CopiedString, PakLess> Archives;
293 // =============================================================================
296 // reads all pak files from a dir
297 void InitDirectory(const char* directory, ArchiveModules& archiveModules)
299 if (g_numDirs == (VFS_MAXDIRS-1))
302 strncpy(g_strDirs[g_numDirs], directory, PATH_MAX);
303 g_strDirs[g_numDirs][PATH_MAX] = '\0';
304 FixDOSName (g_strDirs[g_numDirs]);
305 AddSlash (g_strDirs[g_numDirs]);
307 const char* path = g_strDirs[g_numDirs];
312 archive_entry_t entry;
314 entry.archive = OpenArchive(path);
315 entry.is_pakfile = false;
316 g_archives.push_back(entry);
321 GDir* dir = g_dir_open (path, 0, 0);
325 globalOutputStream() << "vfs directory: " << path << "\n";
327 const char* ignore_prefix = "";
328 const char* override_prefix = "";
331 // See if we are in "sp" or "mp" mapping mode
332 const char* gamemode = gamemode_get();
334 if (strcmp (gamemode, "sp") == 0)
336 ignore_prefix = "mp_";
337 override_prefix = "sp_";
339 else if (strcmp (gamemode, "mp") == 0)
341 ignore_prefix = "sp_";
342 override_prefix = "mp_";
347 Archives archivesOverride;
350 const char* name = g_dir_read_name(dir);
354 const char *ext = strrchr (name, '.');
355 if ((ext == 0) || *(++ext) == '\0' || GetArchiveTable(archiveModules, ext) == 0)
358 // using the same kludge as in engine to ensure consistency
359 if(!string_empty(ignore_prefix) && strncmp(name, ignore_prefix, strlen(ignore_prefix)) == 0)
363 if(!string_empty(override_prefix) && strncmp(name, override_prefix, strlen(override_prefix)) == 0)
365 archivesOverride.insert(name);
369 archives.insert(name);
374 // add the entries to the vfs
375 for(Archives::iterator i = archivesOverride.begin(); i != archivesOverride.end(); ++i)
377 char filename[PATH_MAX];
378 strcpy(filename, path);
379 strcat(filename, (*i).c_str());
380 InitPakFile(archiveModules, filename);
382 for(Archives::iterator i = archives.begin(); i != archives.end(); ++i)
384 char filename[PATH_MAX];
385 strcpy(filename, path);
386 strcat(filename, (*i).c_str());
387 InitPakFile(archiveModules, filename);
392 globalErrorStream() << "vfs directory not found: " << path << "\n";
397 // frees all memory that we allocated
398 // FIXME TTimo this should be improved so that we can shutdown and restart the VFS without exiting Radiant?
399 // (for instance when modifying the project settings)
402 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
404 (*i).archive->release();
411 #define VFS_SEARCH_PAK 0x1
412 #define VFS_SEARCH_DIR 0x2
414 int GetFileCount (const char *filename, int flag)
417 char fixed[PATH_MAX+1];
419 strncpy(fixed, filename, PATH_MAX);
420 fixed[PATH_MAX] = '\0';
424 flag = VFS_SEARCH_PAK | VFS_SEARCH_DIR;
426 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
428 if((*i).is_pakfile && (flag & VFS_SEARCH_PAK) != 0
429 || !(*i).is_pakfile && (flag & VFS_SEARCH_DIR) != 0)
431 if((*i).archive->containsFile(fixed))
439 ArchiveFile* OpenFile(const char* filename)
441 ASSERT_MESSAGE(strchr(filename, '\\') == 0, "path contains invalid separator '\\': \"" << filename << "\"");
442 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
444 ArchiveFile* file = (*i).archive->openFile(filename);
454 ArchiveTextFile* OpenTextFile(const char* filename)
456 ASSERT_MESSAGE(strchr(filename, '\\') == 0, "path contains invalid separator '\\': \"" << filename << "\"");
457 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
459 ArchiveTextFile* file = (*i).archive->openTextFile(filename);
469 // NOTE: when loading a file, you have to allocate one extra byte and set it to \0
470 std::size_t LoadFile (const char *filename, void **bufferptr, int index)
472 char fixed[PATH_MAX+1];
474 strncpy (fixed, filename, PATH_MAX);
475 fixed[PATH_MAX] = '\0';
478 ArchiveFile* file = OpenFile(fixed);
482 *bufferptr = malloc (file->size()+1);
483 // we need to end the buffer with a 0
484 ((char*) (*bufferptr))[file->size()] = 0;
486 std::size_t length = file->getInputStream().read((InputStream::byte_type*)*bufferptr, file->size());
495 void FreeFile (void *p)
500 GSList* GetFileList (const char *dir, const char *ext, std::size_t depth)
502 return GetListInternal (dir, ext, false, depth);
505 GSList* GetDirList (const char *dir, std::size_t depth)
507 return GetListInternal (dir, 0, true, depth);
510 void ClearFileDirList (GSList **lst)
514 g_free ((*lst)->data);
515 *lst = g_slist_remove (*lst, (*lst)->data);
519 const char* FindFile(const char* relative)
521 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
523 if(!(*i).is_pakfile && (*i).archive->containsFile(relative))
525 return (*i).name.c_str();
532 const char* FindPath(const char* absolute)
534 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
536 if(!(*i).is_pakfile && path_equal_n(absolute, (*i).name.c_str(), string_length((*i).name.c_str())))
538 return (*i).name.c_str();
546 class Quake3FileSystem : public VirtualFileSystem
549 void initDirectory(const char *path)
551 InitDirectory(path, FileSystemQ3API_getArchiveModules());
555 globalOutputStream() << "filesystem initialised\n";
556 g_observers.realise();
560 g_observers.unrealise();
561 globalOutputStream() << "filesystem shutdown\n";
565 int getFileCount(const char *filename, int flags)
567 return GetFileCount(filename, flags);
569 ArchiveFile* openFile(const char* filename)
571 return OpenFile(filename);
573 ArchiveTextFile* openTextFile(const char* filename)
575 return OpenTextFile(filename);
577 std::size_t loadFile(const char *filename, void **buffer)
579 return LoadFile(filename, buffer, 0);
581 void freeFile(void *p)
586 void forEachDirectory(const char* basedir, const FileNameCallback& callback, std::size_t depth)
588 GSList* list = GetDirList(basedir, depth);
590 for(GSList* i = list; i != 0; i = g_slist_next(i))
592 callback(reinterpret_cast<const char*>((*i).data));
595 ClearFileDirList(&list);
597 void forEachFile(const char* basedir, const char* extension, const FileNameCallback& callback, std::size_t depth)
599 GSList* list = GetFileList(basedir, extension, depth);
601 for(GSList* i = list; i != 0; i = g_slist_next(i))
603 const char* name = reinterpret_cast<const char*>((*i).data);
604 if(extension_equal(path_get_extension(name), extension))
610 ClearFileDirList(&list);
612 GSList* getDirList(const char *basedir)
614 return GetDirList(basedir, 1);
616 GSList* getFileList(const char *basedir, const char *extension)
618 return GetFileList(basedir, extension, 1);
620 void clearFileDirList(GSList **lst)
622 ClearFileDirList(lst);
625 const char* findFile(const char *name)
627 return FindFile(name);
629 const char* findRoot(const char *name)
631 return FindPath(name);
634 void attach(ModuleObserver& observer)
636 g_observers.attach(observer);
638 void detach(ModuleObserver& observer)
640 g_observers.detach(observer);
643 Archive* getArchive(const char* archiveName)
645 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
649 if(path_equal((*i).name.c_str(), archiveName))
657 void forEachArchive(const ArchiveNameCallback& callback)
659 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
663 callback((*i).name.c_str());
669 Quake3FileSystem g_Quake3FileSystem;
671 void FileSystem_Init()
675 void FileSystem_Shutdown()
679 VirtualFileSystem& GetFileSystem()
681 return g_Quake3FileSystem;