fteqw/engine/common/fs_stdio.c

341 lines
8.9 KiB
C
Raw Normal View History

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