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archiver_dir.c
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/
archiver_dir.c
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/*
* Standard directory I/O support routines for PhysicsFS.
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
#define __PHYSICSFS_INTERNAL__
#include "physfs_internal.h"
/* There's no PHYSFS_Io interface here. Use __PHYSFS_createNativeIo(). */
static char *cvtToDependent(const char *prepend, const char *path, char *buf)
{
BAIL_IF_MACRO(buf == NULL, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
sprintf(buf, "%s%s", prepend ? prepend : "", path);
if (__PHYSFS_platformDirSeparator != '/')
{
char *p;
for (p = strchr(buf, '/'); p != NULL; p = strchr(p + 1, '/'))
*p = __PHYSFS_platformDirSeparator;
} /* if */
return buf;
} /* cvtToDependent */
#define CVT_TO_DEPENDENT(buf, pre, dir) { \
const size_t len = ((pre) ? strlen((char *) pre) : 0) + strlen(dir) + 1; \
buf = cvtToDependent((char*)pre,dir,(char*)__PHYSFS_smallAlloc(len)); \
}
static void *DIR_openArchive(PHYSFS_Io *io, const char *name, int forWriting)
{
PHYSFS_Stat st;
const char dirsep = __PHYSFS_platformDirSeparator;
char *retval = NULL;
const size_t namelen = strlen(name);
const size_t seplen = 1;
int exists = 0;
assert(io == NULL); /* shouldn't create an Io for these. */
BAIL_IF_MACRO(!__PHYSFS_platformStat(name, &exists, &st), ERRPASS, NULL);
if (st.filetype != PHYSFS_FILETYPE_DIRECTORY)
BAIL_MACRO(PHYSFS_ERR_UNSUPPORTED, NULL);
retval = allocator.Malloc(namelen + seplen + 1);
BAIL_IF_MACRO(retval == NULL, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
strcpy(retval, name);
/* make sure there's a dir separator at the end of the string */
if (retval[namelen - 1] != dirsep)
{
retval[namelen] = dirsep;
retval[namelen + 1] = '\0';
} /* if */
return retval;
} /* DIR_openArchive */
static void DIR_enumerateFiles(void *opaque, const char *dname,
PHYSFS_EnumFilesCallback cb,
const char *origdir, void *callbackdata)
{
char *d;
CVT_TO_DEPENDENT(d, opaque, dname);
if (d != NULL)
{
__PHYSFS_platformEnumerateFiles(d, cb, origdir, callbackdata);
__PHYSFS_smallFree(d);
} /* if */
} /* DIR_enumerateFiles */
static PHYSFS_Io *doOpen(void *opaque, const char *name,
const int mode, int *fileExists)
{
char *f;
PHYSFS_Io *io = NULL;
int existtmp = 0;
CVT_TO_DEPENDENT(f, opaque, name);
BAIL_IF_MACRO(!f, ERRPASS, NULL);
if (fileExists == NULL)
fileExists = &existtmp;
io = __PHYSFS_createNativeIo(f, mode);
if (io == NULL)
{
const PHYSFS_ErrorCode err = PHYSFS_getLastErrorCode();
PHYSFS_Stat statbuf;
__PHYSFS_platformStat(f, fileExists, &statbuf);
__PHYSFS_setError(err);
} /* if */
else
{
*fileExists = 1;
} /* else */
__PHYSFS_smallFree(f);
return io;
} /* doOpen */
static PHYSFS_Io *DIR_openRead(void *opaque, const char *fnm, int *exist)
{
return doOpen(opaque, fnm, 'r', exist);
} /* DIR_openRead */
static PHYSFS_Io *DIR_openWrite(void *opaque, const char *filename)
{
return doOpen(opaque, filename, 'w', NULL);
} /* DIR_openWrite */
static PHYSFS_Io *DIR_openAppend(void *opaque, const char *filename)
{
return doOpen(opaque, filename, 'a', NULL);
} /* DIR_openAppend */
static int DIR_remove(void *opaque, const char *name)
{
int retval;
char *f;
CVT_TO_DEPENDENT(f, opaque, name);
BAIL_IF_MACRO(!f, ERRPASS, 0);
retval = __PHYSFS_platformDelete(f);
__PHYSFS_smallFree(f);
return retval;
} /* DIR_remove */
static int DIR_mkdir(void *opaque, const char *name)
{
int retval;
char *f;
CVT_TO_DEPENDENT(f, opaque, name);
BAIL_IF_MACRO(!f, ERRPASS, 0);
retval = __PHYSFS_platformMkDir(f);
__PHYSFS_smallFree(f);
return retval;
} /* DIR_mkdir */
static void DIR_closeArchive(void *opaque)
{
allocator.Free(opaque);
} /* DIR_closeArchive */
static int DIR_stat(void *opaque, const char *name,
int *exists, PHYSFS_Stat *stat)
{
int retval = 0;
char *d;
CVT_TO_DEPENDENT(d, opaque, name);
BAIL_IF_MACRO(!d, ERRPASS, 0);
retval = __PHYSFS_platformStat(d, exists, stat);
__PHYSFS_smallFree(d);
return retval;
} /* DIR_stat */
const PHYSFS_Archiver __PHYSFS_Archiver_DIR =
{
CURRENT_PHYSFS_ARCHIVER_API_VERSION,
{
"",
"Non-archive, direct filesystem I/O",
"Ryan C. Gordon <icculus@icculus.org>",
"http://icculus.org/physfs/",
1, /* supportsSymlinks */
},
DIR_openArchive, /* openArchive() method */
DIR_enumerateFiles, /* enumerateFiles() method */
DIR_openRead, /* openRead() method */
DIR_openWrite, /* openWrite() method */
DIR_openAppend, /* openAppend() method */
DIR_remove, /* remove() method */
DIR_mkdir, /* mkdir() method */
DIR_closeArchive, /* closeArchive() method */
DIR_stat /* stat() method */
};
/* end of archiver_dir.c ... */