#include "fs.h"
+// use syscalls instead of f* functions
+#define FS_USESYSCALLS
+
/*
struct qfile_s
{
fs_flags_t flags;
+#ifdef FS_USESYSCALLS
+ int stream;
+#else
FILE* stream;
+#endif
size_t length; // file size on disk (PACKED only)
size_t offset; // offset into a package (PACKED only)
size_t position; // current position in the file (PACKED only)
typedef struct pack_s
{
char filename [MAX_OSPATH];
+#ifdef FS_USESYSCALLS
+ int handle;
+#else
FILE *handle;
+#endif
int ignorecase; // PK3 ignores case
int numfiles;
packfile_t *files;
Extract the end of the central directory from a PK3 package
====================
*/
+#ifdef FS_USESYSCALLS
+qboolean PK3_GetEndOfCentralDir (const char *packfile, int packhandle, pk3_endOfCentralDir_t *eocd)
+#else
qboolean PK3_GetEndOfCentralDir (const char *packfile, FILE *packhandle, pk3_endOfCentralDir_t *eocd)
+#endif
{
long filesize, maxsize;
qbyte *buffer, *ptr;
int ind;
// Get the package size
+#ifdef FS_USESYSCALLS
+ filesize = lseek (packhandle, 0, SEEK_END);
+#else
fseek (packhandle, 0, SEEK_END);
- filesize = ftell (packhandle);
+ filesize = ftell(packhandle);
+#endif
if (filesize < ZIP_END_CDIR_SIZE)
return false;
else
maxsize = ZIP_MAX_COMMENTS_SIZE + ZIP_END_CDIR_SIZE;
buffer = Mem_Alloc (tempmempool, maxsize);
+#ifdef FS_USESYSCALLS
+ lseek (packhandle, filesize - maxsize, SEEK_SET);
+ if (read (packhandle, buffer, maxsize) != (unsigned long) maxsize)
+#else
fseek (packhandle, filesize - maxsize, SEEK_SET);
if (fread (buffer, 1, maxsize, packhandle) != (unsigned long) maxsize)
+#endif
{
Mem_Free (buffer);
return false;
// Load the central directory in memory
central_dir = Mem_Alloc (tempmempool, eocd->cdir_size);
+#ifdef FS_USESYSCALLS
+ lseek (pack->handle, eocd->cdir_offset, SEEK_SET);
+ read (pack->handle, central_dir, eocd->cdir_size);
+#else
fseek (pack->handle, eocd->cdir_offset, SEEK_SET);
fread (central_dir, 1, eocd->cdir_size, pack->handle);
+#endif
// Extract the files properties
// The parsing is done "by hand" because some fields have variable sizes and
*/
pack_t *FS_LoadPackPK3 (const char *packfile)
{
+#ifdef FS_USESYSCALLS
+ int packhandle;
+#else
FILE *packhandle;
+#endif
pk3_endOfCentralDir_t eocd;
pack_t *pack;
int real_nb_files;
+#ifdef FS_USESYSCALLS
+ packhandle = open (packfile, O_RDONLY);
+ if (packhandle < 0)
+ return NULL;
+#else
packhandle = fopen (packfile, "rb");
if (!packhandle)
return NULL;
+#endif
if (! PK3_GetEndOfCentralDir (packfile, packhandle, &eocd))
Sys_Error ("%s is not a PK3 file", packfile);
// We only need to do this test if MAX_FILES_IN_PACK is lesser than 65535
// since eocd.nbentries is an unsigned 16 bits integer
- #if MAX_FILES_IN_PACK < 65535
+#if MAX_FILES_IN_PACK < 65535
if (eocd.nbentries > MAX_FILES_IN_PACK)
Sys_Error ("%s contains too many files (%hu)", packfile, eocd.nbentries);
- #endif
+#endif
// Create a package structure in memory
pack = Mem_Alloc (pak_mempool, sizeof (pack_t));
return;
// Load the local file description
+#ifdef FS_USESYSCALLS
+ lseek (pack->handle, file->offset, SEEK_SET);
+ count = read (pack->handle, buffer, ZIP_LOCAL_CHUNK_BASE_SIZE);
+#else
fseek (pack->handle, file->offset, SEEK_SET);
count = fread (buffer, 1, ZIP_LOCAL_CHUNK_BASE_SIZE, pack->handle);
+#endif
if (count != ZIP_LOCAL_CHUNK_BASE_SIZE || BuffBigLong (buffer) != ZIP_DATA_HEADER)
Sys_Error ("Can't retrieve file %s in package %s", file->name, pack->filename);
{
dpackheader_t header;
int i, numpackfiles;
+#ifdef FS_USESYSCALLS
+ int packhandle;
+#else
FILE *packhandle;
+#endif
pack_t *pack;
dpackfile_t *info; // temporary alloc, allowing huge pack directories
+#ifdef FS_USESYSCALLS
+ packhandle = open (packfile, O_RDONLY);
+ if (packhandle < 0)
+ return NULL;
+ read (packhandle, (void *)&header, sizeof(header));
+#else
packhandle = fopen (packfile, "rb");
if (!packhandle)
return NULL;
-
fread ((void *)&header, 1, sizeof(header), packhandle);
+#endif
if (memcmp(header.id, "PACK", 4))
Sys_Error ("%s is not a packfile", packfile);
header.dirofs = LittleLong (header.dirofs);
packlist = pack;
info = Mem_Alloc(tempmempool, sizeof(*info) * numpackfiles);
+#ifdef FS_USESYSCALLS
+ lseek (packhandle, header.dirofs, SEEK_SET);
+ read (packhandle, (void *)info, header.dirlen);
+#else
fseek (packhandle, header.dirofs, SEEK_SET);
fread ((void *)info, 1, header.dirlen, packhandle);
+#endif
// parse the directory
for (i = 0;i < numpackfiles;i++)
file = Mem_Alloc (fs_mempool, sizeof (*file));
memset (file, 0, sizeof (*file));
+#ifdef FS_USESYSCALLS
+ if (strchr(mode, 'r'))
+ file->stream = open (filepath, O_RDONLY);
+ else if (strchr(mode, 'w'))
+ file->stream = open (filepath, O_WRONLY | O_CREAT | O_TRUNC, 0666);
+ else if (strchr(mode, 'a'))
+ file->stream = open (filepath, O_RDWR | O_CREAT | O_APPEND, 0666);
+ else
+ file->stream = -1;
+ if (file->stream < 0)
+ {
+ Mem_Free (file);
+ return NULL;
+ }
+#else
file->stream = fopen (filepath, mode);
if (!file->stream)
{
Mem_Free (file);
return NULL;
}
+#endif
return file;
}
if (offs < 0 || len < 0)
{
// We set fs_filesize here for normal files
+#ifdef FS_USESYSCALLS
+ fs_filesize = lseek (file->stream, 0, SEEK_END);
+ lseek (file->stream, 0, SEEK_SET);
+#else
fseek (file->stream, 0, SEEK_END);
fs_filesize = ftell (file->stream);
fseek (file->stream, 0, SEEK_SET);
+#endif
}
// Packed file
else
{
+#ifdef FS_USESYSCALLS
+ lseek (file->stream, offs, SEEK_SET);
+#else
fseek (file->stream, offs, SEEK_SET);
+#endif
file->flags |= FS_FLAG_PACKED;
file->length = len;
*/
int FS_Close (qfile_t* file)
{
+#ifdef FS_USESYSCALLS
+ if (close (file->stream))
+#else
if (fclose (file->stream))
+#endif
return EOF;
if (file->z)
*/
size_t FS_Write (qfile_t* file, const void* data, size_t datasize)
{
+#ifdef FS_USESYSCALLS
+ return write (file->stream, data, datasize);
+#else
return fwrite (data, 1, datasize, file->stream);
+#endif
}
// Quick path for unpacked files
if (! (file->flags & FS_FLAG_PACKED))
+#ifdef FS_USESYSCALLS
+ return read (file->stream, buffer, buffersize);
+#else
return fread (buffer, 1, buffersize, file->stream);
+#endif
// If the file isn't compressed
if (! (file->flags & FS_FLAG_DEFLATED))
if (buffersize > count)
buffersize = count;
+#ifdef FS_USESYSCALLS
+ nb = read (file->stream, buffer, buffersize);
+#else
nb = fread (buffer, 1, buffersize, file->stream);
+#endif
file->position += nb;
return nb;
remain = file->length - ztk->in_position;
count = (remain > sizeof (ztk->input)) ? sizeof (ztk->input) : remain;
+#ifdef FS_USESYSCALLS
+ read (file->stream, ztk->input, count);
+#else
fread (ztk->input, 1, count, file->stream);
+#endif
// Update indexes and counters
ztk->in_ind = 0;
*/
int FS_Flush (qfile_t* file)
{
+#ifdef FS_USESYSCALLS
+ return 0;
+#else
return fflush (file->stream);
+#endif
}
va_list args;
va_start (args, format);
- result = vfprintf (file->stream, format, args);
+ result = FS_VPrintf(file, format, args);
va_end (args);
return result;
*/
int FS_VPrintf(qfile_t* file, const char* format, va_list ap)
{
+#ifdef FS_USESYSCALLS
+{
+ int len;
+ char tempstring[1024];
+ len = vsnprintf (tempstring, sizeof(tempstring), format, ap);
+ if (len >= sizeof(tempstring))
+ {
+ int result;
+ char *temp = Mem_Alloc(tempmempool, len + 1);
+ len = vsnprintf (temp, len + 1, format, ap);
+ result = write (file->stream, temp, len);
+ Mem_Free(temp);
+ return result;
+ }
+ else
+ return write (file->stream, tempstring, len);
+}
+#else
return vfprintf (file->stream, format, ap);
+#endif
}
{
// Quick path for unpacked files
if (! (file->flags & FS_FLAG_PACKED))
+#ifdef FS_USESYSCALLS
+ return lseek (file->stream, offset, whence);
+#else
return fseek (file->stream, offset, whence);
+#endif
// Seeking in compressed files is more a hack than anything else,
// but we need to support it, so here it is.
ztk->out_max = 0;
ztk->out_position = 0;
file->position = 0;
+#ifdef FS_USESYSCALLS
+ lseek (file->stream, file->offset, SEEK_SET);
+#else
fseek (file->stream, file->offset, SEEK_SET);
+#endif
// Reset the Zlib stream
ztk->zstream.next_in = ztk->input;
if (offset < 0 || offset > (long) file->length)
return -1;
+#ifdef FS_USESYSCALLS
+ if (lseek (file->stream, file->offset + offset, SEEK_SET) == -1)
+ return -1;
+#else
if (fseek (file->stream, file->offset + offset, SEEK_SET) == -1)
return -1;
+#endif
file->position = offset;
return 0;
}
if (file->flags & FS_FLAG_PACKED)
return file->position;
+#ifdef FS_USESYSCALLS
+ return lseek (file->stream, 0, SEEK_CUR);
+#else
return ftell (file->stream);
+#endif
}
size_t ind;
// Quick path for unpacked files
+#ifndef FS_USESYSCALLS
if (! (file->flags & FS_FLAG_PACKED))
return fgets (buffer, buffersize, file->stream);
+#endif
for (ind = 0; ind < (size_t) buffersize - 1; ind++)
{
Extract a line from a file
====================
*/
+// FIXME: remove this function?
int FS_Eof (qfile_t* file)
{
if (file->flags & FS_FLAG_PACKED)
return (file->position == file->length);
}
+#ifdef FS_USESYSCALLS
+ Sys_Error("FS_Eof: not implemented using syscalls\n");
+ return false;
+#else
return feof (file->stream);
+#endif
}
projects / xonotic / darkplaces.git / commitdiff