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 "container/array.h"
61 #include "stream/stringstream.h"
63 #include "moduleobservers.h"
72 #define gamemode_get GlobalRadiant().getGameMode
76 // =============================================================================
79 Archive* OpenArchive(const char* name);
81 struct archive_entry_t
90 typedef std::list<archive_entry_t> archives_t;
92 static archives_t g_archives;
93 static char g_strDirs[VFS_MAXDIRS][PATH_MAX+1];
95 static bool g_bUsePak = true;
97 ModuleObservers g_observers;
99 // =============================================================================
102 static void AddSlash (char *str)
104 std::size_t n = strlen (str);
107 if (str[n-1] != '\\' && str[n-1] != '/')
109 globalErrorStream() << "WARNING: directory path does not end with separator: " << str << "\n";
115 static void FixDOSName (char *src)
117 if (src == 0 || strchr(src, '\\') == 0)
120 globalErrorStream() << "WARNING: invalid path separator '\\': " << src << "\n";
132 const _QERArchiveTable* GetArchiveTable(ArchiveModules& archiveModules, const char* ext)
134 StringOutputStream tmp(16);
135 tmp << LowerCase(ext);
136 return archiveModules.findModule(tmp.c_str());
138 static void InitPakFile (ArchiveModules& archiveModules, const char *filename)
140 const _QERArchiveTable* table = GetArchiveTable(archiveModules, path_get_extension(filename));
144 archive_entry_t entry;
146 std::size_t length = string_length(filename);
147 Array<char> tmp(length + 2);
148 std::copy(filename, filename + length, tmp.begin());
150 tmp[length + 1] = '\0';
151 entry.name = tmp.begin();
153 entry.archive = table->m_pfnOpenArchive(filename);
154 entry.is_pakfile = true;
155 g_archives.push_back(entry);
156 globalOutputStream() << " pak file: " << filename << "\n";
160 inline void pathlist_prepend_unique(GSList*& pathlist, char* path)
162 if(g_slist_find_custom(pathlist, path, (GCompareFunc)path_compare) == 0)
164 pathlist = g_slist_prepend(pathlist, path);
172 class DirectoryListVisitor : public Archive::Visitor
175 const char* m_directory;
177 DirectoryListVisitor(GSList*& matches, const char* directory)
178 : m_matches(matches), m_directory(directory)
180 void visit(const char* name)
182 const char* subname = path_make_relative(name, m_directory);
185 if(subname[0] == '/')
187 char* dir = g_strdup(subname);
188 char* last_char = dir + strlen(dir);
189 if(last_char != dir && *(--last_char) == '/')
191 pathlist_prepend_unique(m_matches, dir);
196 class FileListVisitor : public Archive::Visitor
199 const char* m_directory;
200 const char* m_extension;
202 FileListVisitor(GSList*& matches, const char* directory, const char* extension)
203 : m_matches(matches), m_directory(directory), m_extension(extension)
205 void visit(const char* name)
207 const char* subname = path_make_relative(name, m_directory);
210 if(subname[0] == '/')
212 if(m_extension[0] == '*' || extension_equal(path_get_extension(subname), m_extension))
213 pathlist_prepend_unique(m_matches, g_strdup (subname));
218 static GSList* GetListInternal (const char *refdir, const char *ext, bool directories, std::size_t depth)
222 ASSERT_MESSAGE(refdir[strlen(refdir) - 1] == '/', "search path does not end in '/'");
226 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
228 DirectoryListVisitor visitor(files, refdir);
229 (*i).archive->forEachFile(Archive::VisitorFunc(visitor, Archive::eDirectories, depth), refdir);
234 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
236 FileListVisitor visitor(files, refdir, ext);
237 (*i).archive->forEachFile(Archive::VisitorFunc(visitor, Archive::eFiles, depth), refdir);
241 files = g_slist_reverse(files);
246 inline int ascii_to_upper(int c)
248 if (c >= 'a' && c <= 'z')
250 return c - ('a' - 'A');
256 This behaves identically to stricmp(a,b), except that ASCII chars
257 [\]^`_ come AFTER alphabet chars instead of before. This is because
258 it converts all alphabet chars to uppercase before comparison,
259 while stricmp converts them to lowercase.
261 static int string_compare_nocase_upper(const char* a, const char* b)
265 int c1 = ascii_to_upper(*a++);
266 int c2 = ascii_to_upper(*b++);
283 // Arnout: note - sort pakfiles in reverse order. This ensures that
284 // later pakfiles override earlier ones. This because the vfs module
285 // returns a filehandle to the first file it can find (while it should
286 // return the filehandle to the file in the most overriding pakfile, the
287 // last one in the list that is).
289 //!\todo Analyse the code in rtcw/q3 to see which order it sorts pak files.
293 bool operator()(const CopiedString& self, const CopiedString& other) const
295 return string_compare_nocase_upper(self.c_str(), other.c_str()) > 0;
299 typedef std::set<CopiedString, PakLess> Archives;
301 // =============================================================================
304 // reads all pak files from a dir
305 void InitDirectory(const char* directory, ArchiveModules& archiveModules)
307 if (g_numDirs == (VFS_MAXDIRS-1))
310 strncpy(g_strDirs[g_numDirs], directory, PATH_MAX);
311 g_strDirs[g_numDirs][PATH_MAX] = '\0';
312 FixDOSName (g_strDirs[g_numDirs]);
313 AddSlash (g_strDirs[g_numDirs]);
315 const char* path = g_strDirs[g_numDirs];
320 archive_entry_t entry;
322 entry.archive = OpenArchive(path);
323 entry.is_pakfile = false;
324 g_archives.push_back(entry);
329 GDir* dir = g_dir_open (path, 0, 0);
333 globalOutputStream() << "vfs directory: " << path << "\n";
335 const char* ignore_prefix = "";
336 const char* override_prefix = "";
339 // See if we are in "sp" or "mp" mapping mode
340 const char* gamemode = gamemode_get();
342 if (strcmp (gamemode, "sp") == 0)
344 ignore_prefix = "mp_";
345 override_prefix = "sp_";
347 else if (strcmp (gamemode, "mp") == 0)
349 ignore_prefix = "sp_";
350 override_prefix = "mp_";
355 Archives archivesOverride;
358 const char* name = g_dir_read_name(dir);
362 const char *ext = strrchr (name, '.');
363 if ((ext == 0) || *(++ext) == '\0' || GetArchiveTable(archiveModules, ext) == 0)
366 // using the same kludge as in engine to ensure consistency
367 if(!string_empty(ignore_prefix) && strncmp(name, ignore_prefix, strlen(ignore_prefix)) == 0)
371 if(!string_empty(override_prefix) && strncmp(name, override_prefix, strlen(override_prefix)) == 0)
373 archivesOverride.insert(name);
377 archives.insert(name);
382 // add the entries to the vfs
383 for(Archives::iterator i = archivesOverride.begin(); i != archivesOverride.end(); ++i)
385 char filename[PATH_MAX];
386 strcpy(filename, path);
387 strcat(filename, (*i).c_str());
388 InitPakFile(archiveModules, filename);
390 for(Archives::iterator i = archives.begin(); i != archives.end(); ++i)
392 char filename[PATH_MAX];
393 strcpy(filename, path);
394 strcat(filename, (*i).c_str());
395 InitPakFile(archiveModules, filename);
400 globalErrorStream() << "vfs directory not found: " << path << "\n";
405 // frees all memory that we allocated
406 // FIXME TTimo this should be improved so that we can shutdown and restart the VFS without exiting Radiant?
407 // (for instance when modifying the project settings)
410 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
412 (*i).archive->release();
419 #define VFS_SEARCH_PAK 0x1
420 #define VFS_SEARCH_DIR 0x2
422 int GetFileCount (const char *filename, int flag)
425 char fixed[PATH_MAX+1];
427 strncpy(fixed, filename, PATH_MAX);
428 fixed[PATH_MAX] = '\0';
432 flag = VFS_SEARCH_PAK | VFS_SEARCH_DIR;
434 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
436 if((*i).is_pakfile && (flag & VFS_SEARCH_PAK) != 0
437 || !(*i).is_pakfile && (flag & VFS_SEARCH_DIR) != 0)
439 if((*i).archive->containsFile(fixed))
447 ArchiveFile* OpenFile(const char* filename)
449 ASSERT_MESSAGE(strchr(filename, '\\') == 0, "path contains invalid separator '\\': \"" << filename << "\"");
450 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
452 ArchiveFile* file = (*i).archive->openFile(filename);
462 ArchiveTextFile* OpenTextFile(const char* filename)
464 ASSERT_MESSAGE(strchr(filename, '\\') == 0, "path contains invalid separator '\\': \"" << filename << "\"");
465 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
467 ArchiveTextFile* file = (*i).archive->openTextFile(filename);
477 // NOTE: when loading a file, you have to allocate one extra byte and set it to \0
478 std::size_t LoadFile (const char *filename, void **bufferptr, int index)
480 char fixed[PATH_MAX+1];
482 strncpy (fixed, filename, PATH_MAX);
483 fixed[PATH_MAX] = '\0';
486 ArchiveFile* file = OpenFile(fixed);
490 *bufferptr = malloc (file->size()+1);
491 // we need to end the buffer with a 0
492 ((char*) (*bufferptr))[file->size()] = 0;
494 std::size_t length = file->getInputStream().read((InputStream::byte_type*)*bufferptr, file->size());
503 void FreeFile (void *p)
508 GSList* GetFileList (const char *dir, const char *ext, std::size_t depth)
510 return GetListInternal (dir, ext, false, depth);
513 GSList* GetDirList (const char *dir, std::size_t depth)
515 return GetListInternal (dir, 0, true, depth);
518 void ClearFileDirList (GSList **lst)
522 g_free ((*lst)->data);
523 *lst = g_slist_remove (*lst, (*lst)->data);
527 const char* FindFile(const char* relative)
529 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
531 if((*i).archive->containsFile(relative))
533 return (*i).name.c_str();
540 const char* FindPath(const char* absolute)
542 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
544 if(path_equal_n(absolute, (*i).name.c_str(), string_length((*i).name.c_str())))
546 return (*i).name.c_str();
554 class Quake3FileSystem : public VirtualFileSystem
557 void initDirectory(const char *path)
559 InitDirectory(path, FileSystemQ3API_getArchiveModules());
563 globalOutputStream() << "filesystem initialised\n";
564 g_observers.realise();
568 g_observers.unrealise();
569 globalOutputStream() << "filesystem shutdown\n";
573 int getFileCount(const char *filename, int flags)
575 return GetFileCount(filename, flags);
577 ArchiveFile* openFile(const char* filename)
579 return OpenFile(filename);
581 ArchiveTextFile* openTextFile(const char* filename)
583 return OpenTextFile(filename);
585 std::size_t loadFile(const char *filename, void **buffer)
587 return LoadFile(filename, buffer, 0);
589 void freeFile(void *p)
594 void forEachDirectory(const char* basedir, const FileNameCallback& callback, std::size_t depth)
596 GSList* list = GetDirList(basedir, depth);
598 for(GSList* i = list; i != 0; i = g_slist_next(i))
600 callback(reinterpret_cast<const char*>((*i).data));
603 ClearFileDirList(&list);
605 void forEachFile(const char* basedir, const char* extension, const FileNameCallback& callback, std::size_t depth)
607 GSList* list = GetFileList(basedir, extension, depth);
609 for(GSList* i = list; i != 0; i = g_slist_next(i))
611 const char* name = reinterpret_cast<const char*>((*i).data);
612 if(extension_equal(path_get_extension(name), extension))
618 ClearFileDirList(&list);
620 GSList* getDirList(const char *basedir)
622 return GetDirList(basedir, 1);
624 GSList* getFileList(const char *basedir, const char *extension)
626 return GetFileList(basedir, extension, 1);
628 void clearFileDirList(GSList **lst)
630 ClearFileDirList(lst);
633 const char* findFile(const char *name)
635 return FindFile(name);
637 const char* findRoot(const char *name)
639 return FindPath(name);
642 void attach(ModuleObserver& observer)
644 g_observers.attach(observer);
646 void detach(ModuleObserver& observer)
648 g_observers.detach(observer);
651 Archive* getArchive(const char* archiveName)
653 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
657 if(path_equal((*i).name.c_str(), archiveName))
665 void forEachArchive(const ArchiveNameCallback& callback)
667 for(archives_t::iterator i = g_archives.begin(); i != g_archives.end(); ++i)
671 callback((*i).name.c_str());
677 Quake3FileSystem g_Quake3FileSystem;
679 void FileSystem_Init()
683 void FileSystem_Shutdown()
687 VirtualFileSystem& GetFileSystem()
689 return g_Quake3FileSystem;