fteqw/engine/web/fs_web.c

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#include "quakedef.h"
#include "fs.h"
#if defined(FTE_TARGET_WEB)
#include "ftejslib.h"
#define FSWEB_OpenPath VFSOS_OpenPath
#define FSWEB_OpenTemp FS_OpenTemp
typedef struct {
searchpathfuncs_t pub;
int depth;
void (QDECL *AddFileHash)(int depth, const char *fname, fsbucket_t *filehandle, void *pathhandle);
char rootpath[1];
} webpath_t;
typedef struct {
vfsfile_t funcs;
int offset;
int handle;
} vfswebfile_t;
static int QDECL VFSWEB_ReadBytes (struct vfsfile_s *file, void *buffer, int bytestoread)
{
vfswebfile_t *intfile = (vfswebfile_t*)file;
int len = emscriptenfte_buf_read(intfile->handle, intfile->offset, buffer, bytestoread);
intfile->offset += len;
return len;
}
static int QDECL VFSWEB_WriteBytes (struct vfsfile_s *file, const void *buffer, int bytestoread)
{
vfswebfile_t *intfile = (vfswebfile_t*)file;
int len = emscriptenfte_buf_write(intfile->handle, intfile->offset, buffer, bytestoread);
intfile->offset += len;
return len;
}
static qboolean QDECL VFSWEB_Seek (struct vfsfile_s *file, unsigned long pos)
{
vfswebfile_t *intfile = (vfswebfile_t*)file;
if (pos < 0)
return 0;
intfile->offset = pos;
return true;
}
static unsigned long QDECL VFSWEB_Tell (struct vfsfile_s *file)
{
vfswebfile_t *intfile = (vfswebfile_t*)file;
return intfile->offset;
}
static void QDECL VFSWEB_Flush(struct vfsfile_s *file)
{
vfswebfile_t *intfile = (vfswebfile_t*)file;
}
static unsigned long QDECL VFSWEB_GetSize (struct vfsfile_s *file)
{
vfswebfile_t *intfile = (vfswebfile_t*)file;
unsigned long l;
l = emscriptenfte_buf_getsize(intfile->handle);
return l;
}
static void QDECL VFSWEB_Close(vfsfile_t *file)
{
vfswebfile_t *intfile = (vfswebfile_t*)file;
emscriptenfte_buf_release(intfile->handle);
Z_Free(file);
}
vfsfile_t *FSWEB_OpenTemp(void)
{
int f;
vfswebfile_t *file;
f = emscriptenfte_buf_create();
if (f == -1)
{
Con_Printf("FSWEB_OpenTemp failed\n");
return NULL;
}
file = Z_Malloc(sizeof(vfswebfile_t));
file->funcs.Close = VFSWEB_Close;
#ifdef _DEBUG
Q_strncpyz(file->funcs.dbgname, "FSWEB_OpenTemp", sizeof(file->funcs.dbgname));
#endif
file->funcs.ReadBytes = VFSWEB_ReadBytes;
file->funcs.WriteBytes = VFSWEB_WriteBytes;
file->funcs.Seek = VFSWEB_Seek;
file->funcs.Tell = VFSWEB_Tell;
file->funcs.GetLen = VFSWEB_GetSize;
file->funcs.Flush = VFSWEB_Flush;
file->handle = f;
return &file->funcs;
}
vfsfile_t *VFSWEB_Open(const char *osname, const char *mode, qboolean *needsflush)
{
int f;
vfswebfile_t *file;
//qboolean read = !!strchr(mode, 'r');
qboolean write = !!strchr(mode, 'w');
qboolean append = !!strchr(mode, 'a');
if (needsflush)
*needsflush = false;
f = emscriptenfte_buf_open(osname, write||append);
if (f == -1)
return NULL;
if (write || append)
{
if (needsflush)
*needsflush = true;
}
file = Z_Malloc(sizeof(vfswebfile_t));
#ifdef _DEBUG
Q_strncpyz(file->funcs.dbgname, osname, sizeof(file->funcs.dbgname));
#endif
file->funcs.ReadBytes = VFSWEB_ReadBytes;
file->funcs.WriteBytes = VFSWEB_WriteBytes;
file->funcs.Seek = VFSWEB_Seek;
file->funcs.Tell = VFSWEB_Tell;
file->funcs.GetLen = VFSWEB_GetSize;
file->funcs.Close = VFSWEB_Close;
file->funcs.Flush = VFSWEB_Flush;
file->handle = f;
if (append)
file->offset = VFSWEB_GetSize(&file->funcs);
return &file->funcs;
}
vfsfile_t *VFSOS_Open(const char *osname, const char *mode)
{
vfsfile_t *f;
qboolean needsflush;
f = VFSWEB_Open(osname, mode, &needsflush);
if (needsflush)
FS_FlushFSHashReally();
return f;
}
static vfsfile_t *QDECL FSWEB_OpenVFS(searchpathfuncs_t *handle, flocation_t *loc, const char *mode)
{
vfsfile_t *f;
webpath_t *sp = (void*)handle;
qboolean needsflush;
f = VFSWEB_Open(loc->rawname, mode, &needsflush);
if (needsflush && sp->AddFileHash)
sp->AddFileHash(sp->depth, loc->rawname, NULL, sp);
return f;
}
static void QDECL FSWEB_ClosePath(searchpathfuncs_t *handle)
{
Z_Free(handle);
}
static qboolean QDECL FSWEB_PollChanges(searchpathfuncs_t *handle)
{
// webpath_t *np = handle;
return true; //can't verify that or not, so we have to assume the worst
}
static int QDECL FSWEB_RebuildFSHash(const char *filename, int filesize, void *data, searchpathfuncs_t *spath)
{
webpath_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, FSWEB_RebuildFSHash, data, spath);
return true;
}
AddFileHash(sp->depth, filename, NULL, sp);
return true;
}
static void QDECL FSWEB_BuildHash(searchpathfuncs_t *handle, int depth, void (QDECL *AddFileHash)(int depth, const char *fname, fsbucket_t *filehandle, void *pathhandle))
{
webpath_t *sp = (void*)handle;
sp->depth = depth;
sp->AddFileHash = AddFileHash;
Sys_EnumerateFiles(sp->rootpath, "*", FSWEB_RebuildFSHash, AddFileHash, handle);
}
static qboolean QDECL FSWEB_FLocate(searchpathfuncs_t *handle, flocation_t *loc, const char *filename, void *hashedresult)
{
webpath_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);
{
vfsfile_t *f = VFSWEB_Open(netpath, "rb", NULL);
if (!f)
return false;
len = VFS_GETLEN(f);
VFS_CLOSE(f);
}
if (loc)
{
loc->len = len;
loc->offset = 0;
loc->index = 0;
Q_strncpyz(loc->rawname, netpath, sizeof(loc->rawname));
}
return true;
}
static void QDECL FSWEB_ReadFile(searchpathfuncs_t *handle, flocation_t *loc, char *buffer)
{
vfsfile_t *f;
size_t result;
f = VFSWEB_Open(loc->rawname, "rb", NULL);
if (!f) //err...
return;
VFS_SEEK(f, loc->offset);
result = VFS_READ(f, buffer, loc->len); // do soemthing with result
if (result != loc->len)
Con_Printf("FSWEB_ReadFile() fread: Filename: %s, expected %i, result was %u \n",loc->rawname,loc->len,(unsigned int)result);
VFS_CLOSE(f);
}
static int QDECL FSWEB_EnumerateFiles (searchpathfuncs_t *handle, const char *match, int (QDECL *func)(const char *, int, void *, searchpathfuncs_t *spath), void *parm)
{
webpath_t *sp = (webpath_t*)handle;
return Sys_EnumerateFiles(sp->rootpath, match, func, parm, handle);
}
searchpathfuncs_t *QDECL FSWEB_OpenPath(vfsfile_t *mustbenull, const char *desc)
{
webpath_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 = FSWEB_ClosePath;
np->pub.BuildHash = FSWEB_BuildHash;
np->pub.FindFile = FSWEB_FLocate;
np->pub.ReadFile = FSWEB_ReadFile;
np->pub.EnumerateFiles = FSWEB_EnumerateFiles;
np->pub.OpenVFS = FSWEB_OpenVFS;
np->pub.PollChanges = FSWEB_PollChanges;
return &np->pub;
}
#endif