350 lines
8.4 KiB
C
350 lines
8.4 KiB
C
#include "quakedef.h"
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#include "fs.h"
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#include "errno.h"
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#ifndef NACL
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#ifdef WEBSVONLY
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#define Z_Free free
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#define Z_Malloc malloc
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#else
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#if !defined(_WIN32) || defined(_SDL)
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#define stdiofilefuncs osfilefuncs
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#endif
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#define FSSTDIO_OpenTemp FS_OpenTemp
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#endif
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typedef struct {
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int depth;
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char rootpath[1];
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} stdiopath_t;
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typedef struct {
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vfsfile_t funcs;
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FILE *handle;
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} vfsstdiofile_t;
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static int VFSSTDIO_ReadBytes (struct vfsfile_s *file, void *buffer, int bytestoread)
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{
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vfsstdiofile_t *intfile = (vfsstdiofile_t*)file;
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return fread(buffer, 1, bytestoread, intfile->handle);
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}
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static int VFSSTDIO_WriteBytes (struct vfsfile_s *file, const void *buffer, int bytestoread)
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{
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vfsstdiofile_t *intfile = (vfsstdiofile_t*)file;
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return fwrite(buffer, 1, bytestoread, intfile->handle);
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}
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static qboolean VFSSTDIO_Seek (struct vfsfile_s *file, unsigned long pos)
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{
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vfsstdiofile_t *intfile = (vfsstdiofile_t*)file;
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return fseek(intfile->handle, pos, SEEK_SET) == 0;
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}
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static unsigned long VFSSTDIO_Tell (struct vfsfile_s *file)
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{
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vfsstdiofile_t *intfile = (vfsstdiofile_t*)file;
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return ftell(intfile->handle);
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}
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static void VFSSTDIO_Flush(struct vfsfile_s *file)
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{
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vfsstdiofile_t *intfile = (vfsstdiofile_t*)file;
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fflush(intfile->handle);
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}
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static unsigned long VFSSTDIO_GetSize (struct vfsfile_s *file)
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{
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vfsstdiofile_t *intfile = (vfsstdiofile_t*)file;
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unsigned int curpos;
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unsigned int maxlen;
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curpos = ftell(intfile->handle);
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fseek(intfile->handle, 0, SEEK_END);
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maxlen = ftell(intfile->handle);
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fseek(intfile->handle, curpos, SEEK_SET);
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return maxlen;
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}
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static void VFSSTDIO_Close(vfsfile_t *file)
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{
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vfsstdiofile_t *intfile = (vfsstdiofile_t*)file;
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fclose(intfile->handle);
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Z_Free(file);
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}
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#ifdef _WIN32
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static void VFSSTDIO_CloseTemp(vfsfile_t *file)
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{
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vfsstdiofile_t *intfile = (vfsstdiofile_t*)file;
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char *fname = (char*)(intfile+1);
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fclose(intfile->handle);
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_unlink(fname);
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Z_Free(file);
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}
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#endif
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vfsfile_t *FSSTDIO_OpenTemp(void)
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{
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FILE *f;
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vfsstdiofile_t *file;
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#ifdef _WIN32
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/*warning: annother app might manage to open the file before we can. if the file is not opened exclusively then we can end up with issues
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on windows, fopen is typically exclusive anyway, but not on unix. but on unix, tmpfile is actually usable, so special-case the windows code*/
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char *fname = _tempnam(NULL, "ftemp");
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f = fopen(fname, "w+b");
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if (!f)
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return NULL;
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file = Z_Malloc(sizeof(vfsstdiofile_t) + strlen(fname)+1);
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file->funcs.Close = VFSSTDIO_CloseTemp;
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strcpy((char*)(file+1), fname);
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free(fname);
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#else
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f = tmpfile();
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if (!f)
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return NULL;
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file = Z_Malloc(sizeof(vfsstdiofile_t));
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file->funcs.Close = VFSSTDIO_Close;
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#endif
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#ifdef _DEBUG
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Q_strncpyz(file->funcs.dbgname, "FSSTDIO_OpenTemp", sizeof(file->funcs.dbgname));
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#endif
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file->funcs.ReadBytes = VFSSTDIO_ReadBytes;
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file->funcs.WriteBytes = VFSSTDIO_WriteBytes;
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file->funcs.Seek = VFSSTDIO_Seek;
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file->funcs.Tell = VFSSTDIO_Tell;
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file->funcs.GetLen = VFSSTDIO_GetSize;
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file->funcs.Flush = VFSSTDIO_Flush;
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file->handle = f;
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return (vfsfile_t*)file;
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}
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#if 0//def ANDROID
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vfsfile_t *Sys_OpenAsset(const char *fname);
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#endif
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vfsfile_t *VFSSTDIO_Open(const char *osname, const char *mode, qboolean *needsflush)
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{
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FILE *f;
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vfsstdiofile_t *file;
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qboolean read = !!strchr(mode, 'r');
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qboolean write = !!strchr(mode, 'w');
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qboolean append = !!strchr(mode, 'a');
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qboolean text = !!strchr(mode, 't');
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char newmode[3];
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int modec = 0;
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if (needsflush)
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*needsflush = false;
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#if 0//def ANDROID
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// if (!strncmp("asset/", osname, 6))
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{
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if (append || write)
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return NULL;
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return Sys_OpenAsset(osname);
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}
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#endif
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if (read)
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newmode[modec++] = 'r';
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if (write)
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newmode[modec++] = 'w';
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if (append)
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newmode[modec++] = 'a';
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if (text)
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newmode[modec++] = 't';
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else
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newmode[modec++] = 'b';
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newmode[modec++] = '\0';
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f = fopen(osname, newmode);
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if (!f)
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return NULL;
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if (write || append)
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{
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if (needsflush)
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*needsflush = true;
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}
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file = Z_Malloc(sizeof(vfsstdiofile_t));
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#ifdef _DEBUG
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Q_strncpyz(file->funcs.dbgname, osname, sizeof(file->funcs.dbgname));
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#endif
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file->funcs.ReadBytes = strchr(mode, 'r')?VFSSTDIO_ReadBytes:NULL;
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file->funcs.WriteBytes = (strchr(mode, 'w')||strchr(mode, 'a'))?VFSSTDIO_WriteBytes:NULL;
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file->funcs.Seek = VFSSTDIO_Seek;
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file->funcs.Tell = VFSSTDIO_Tell;
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file->funcs.GetLen = VFSSTDIO_GetSize;
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file->funcs.Close = VFSSTDIO_Close;
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file->funcs.Flush = VFSSTDIO_Flush;
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file->handle = f;
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return (vfsfile_t*)file;
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}
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#if !defined(_WIN32) || defined(_SDL)
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vfsfile_t *VFSOS_Open(const char *osname, const char *mode)
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{
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vfsfile_t *f;
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qboolean needsflush;
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f = VFSSTDIO_Open(osname, mode, &needsflush);
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if (needsflush)
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FS_FlushFSHashReally();
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return f;
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}
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#endif
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#ifndef WEBSVONLY
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static vfsfile_t *FSSTDIO_OpenVFS(void *handle, flocation_t *loc, const char *mode)
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{
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vfsfile_t *f;
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stdiopath_t *sp = handle;
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char diskname[MAX_OSPATH];
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qboolean needsflush;
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//path is already cleaned, as anything that gets a valid loc needs cleaning up first.
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snprintf(diskname, sizeof(diskname), "%s/%s", sp->rootpath, loc->rawname);
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f = VFSSTDIO_Open(diskname, mode, &needsflush);
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if (needsflush)
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FS_AddFileHash(sp->depth, loc->rawname, NULL, sp);
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return f;
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}
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static void FSSTDIO_PrintPath(void *handle)
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{
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stdiopath_t *np = handle;
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Con_Printf("%s\n", np->rootpath);
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}
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static void FSSTDIO_ClosePath(void *handle)
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{
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Z_Free(handle);
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}
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static qboolean FSSTDIO_PollChanges(void *handle)
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{
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stdiopath_t *np = handle;
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return true; //can't verify that or not, so we have to assume the worst
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}
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static void *FSSTDIO_OpenPath(vfsfile_t *mustbenull, const char *desc)
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{
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stdiopath_t *np;
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int dlen = strlen(desc);
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if (mustbenull)
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return NULL;
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np = Z_Malloc(sizeof(*np) + dlen);
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if (np)
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{
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np->depth = 0;
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memcpy(np->rootpath, desc, dlen+1);
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}
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return np;
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}
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static int FSSTDIO_RebuildFSHash(const char *filename, int filesize, void *data)
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{
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stdiopath_t *sp = data;
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if (filename[strlen(filename)-1] == '/')
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{ //this is actually a directory
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char childpath[256];
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Q_snprintfz(childpath, sizeof(childpath), "%s*", filename);
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Sys_EnumerateFiles(sp->rootpath, childpath, FSSTDIO_RebuildFSHash, data);
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return true;
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}
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FS_AddFileHash(sp->depth, filename, NULL, sp);
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return true;
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}
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static void FSSTDIO_BuildHash(void *handle, int depth)
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{
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stdiopath_t *sp = handle;
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sp->depth = depth;
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Sys_EnumerateFiles(sp->rootpath, "*", FSSTDIO_RebuildFSHash, handle);
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}
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static qboolean FSSTDIO_FLocate(void *handle, flocation_t *loc, const char *filename, void *hashedresult)
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{
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stdiopath_t *sp = handle;
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int len;
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char netpath[MAX_OSPATH];
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if (hashedresult && (void *)hashedresult != handle)
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return false;
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/*
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if (!static_registered)
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{ // if not a registered version, don't ever go beyond base
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if ( strchr (filename, '/') || strchr (filename,'\\'))
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continue;
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}
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*/
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// check a file in the directory tree
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snprintf (netpath, sizeof(netpath)-1, "%s/%s", sp->rootpath, filename);
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#ifdef ANDROID
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{
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vfsfile_t *f = VFSSTDIO_Open(netpath, "rb", NULL);
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if (!f)
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return false;
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len = VFS_GETLEN(f);
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VFS_CLOSE(f);
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}
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#else
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{
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FILE *f = fopen(netpath, "rb");
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if (!f)
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return false;
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fseek(f, 0, SEEK_END);
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len = ftell(f);
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fclose(f);
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}
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#endif
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if (loc)
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{
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loc->len = len;
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loc->offset = 0;
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loc->index = 0;
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Q_strncpyz(loc->rawname, filename, sizeof(loc->rawname));
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}
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return true;
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}
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static void FSSTDIO_ReadFile(void *handle, flocation_t *loc, char *buffer)
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{
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FILE *f;
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size_t result;
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f = fopen(loc->rawname, "rb");
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if (!f) //err...
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return;
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fseek(f, loc->offset, SEEK_SET);
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result = fread(buffer, 1, loc->len, f); // do soemthing with result
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if (result != loc->len)
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Con_Printf("FSSTDIO_ReadFile() fread: Filename: %s, expected %i, result was %u (%s)\n",loc->rawname,loc->len,(unsigned int)result,strerror(errno));
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fclose(f);
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}
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static int FSSTDIO_EnumerateFiles (void *handle, const char *match, int (*func)(const char *, int, void *), void *parm)
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{
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stdiopath_t *sp = handle;
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return Sys_EnumerateFiles(sp->rootpath, match, func, parm);
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}
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searchpathfuncs_t stdiofilefuncs = {
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FSSTDIO_PrintPath,
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FSSTDIO_ClosePath,
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FSSTDIO_BuildHash,
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FSSTDIO_FLocate,
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FSSTDIO_ReadFile,
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FSSTDIO_EnumerateFiles,
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FSSTDIO_OpenPath,
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NULL,
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FSSTDIO_OpenVFS,
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FSSTDIO_PollChanges
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};
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#endif
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#endif
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