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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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "physfs.h"
#define __PHYSICSFS_INTERNAL__
#include "physfs_internal.h"
/* There's no PHYSFS_Io interface here. Use __PHYSFS_createNativeIo(). */
static void *DIR_openArchive(PHYSFS_Io *io, const char *name, int forWriting)
{
PHYSFS_Stat statbuf;
const char *dirsep = PHYSFS_getDirSeparator();
char *retval = NULL;
const size_t namelen = strlen(name);
const size_t seplen = strlen(dirsep);
int exists = 0;
assert(io == NULL); /* shouldn't create an Io for these. */
BAIL_IF_MACRO(!__PHYSFS_platformStat(name, &exists, &statbuf), NULL, NULL);
if ((!exists) || (statbuf.filetype != PHYSFS_FILETYPE_DIRECTORY))
BAIL_MACRO(ERR_NOT_AN_ARCHIVE, NULL);
retval = allocator.Malloc(namelen + seplen + 1);
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
/* make sure there's a dir separator at the end of the string */
/* !!! FIXME: is there really any place where (seplen != 1)? */
strcpy(retval, name);
if (strcmp((name + namelen) - seplen, dirsep) != 0)
strcat(retval, dirsep);
return retval;
} /* DIR_openArchive */
/* !!! FIXME: I would like to smallAlloc() all these conversions somehow. */
static void DIR_enumerateFiles(dvoid *opaque, const char *dname,
int omitSymLinks, PHYSFS_EnumFilesCallback cb,
const char *origdir, void *callbackdata)
{
char *d = __PHYSFS_platformCvtToDependent((char *) opaque, dname, NULL);
if (d != NULL)
{
__PHYSFS_platformEnumerateFiles(d, omitSymLinks, cb,
origdir, callbackdata);
allocator.Free(d);
} /* if */
} /* DIR_enumerateFiles */
static PHYSFS_Io *doOpen(dvoid *opaque, const char *name,
const int mode, int *fileExists)
{
char *f = __PHYSFS_platformCvtToDependent((char *) opaque, name, NULL);
PHYSFS_Io *io = NULL;
int existtmp = 0;
if (fileExists == NULL)
fileExists = &existtmp;
*fileExists = 0;
BAIL_IF_MACRO(f == NULL, NULL, NULL);
io = __PHYSFS_createNativeIo(f, mode);
allocator.Free(f);
if (io == NULL)
{
PHYSFS_Stat statbuf;
__PHYSFS_platformStat(f, fileExists, &statbuf);
return NULL;
} /* if */
*fileExists = 1;
return io;
} /* doOpen */
static PHYSFS_Io *DIR_openRead(dvoid *opaque, const char *fnm, int *exist)
{
return doOpen(opaque, fnm, 'r', exist);
} /* DIR_openRead */
static PHYSFS_Io *DIR_openWrite(dvoid *opaque, const char *filename)
{
return doOpen(opaque, filename, 'w', NULL);
} /* DIR_openWrite */
static PHYSFS_Io *DIR_openAppend(dvoid *opaque, const char *filename)
{
return doOpen(opaque, filename, 'a', NULL);
} /* DIR_openAppend */
static int DIR_remove(dvoid *opaque, const char *name)
{
char *f = __PHYSFS_platformCvtToDependent((char *) opaque, name, NULL);
int retval;
BAIL_IF_MACRO(f == NULL, NULL, 0);
retval = __PHYSFS_platformDelete(f);
allocator.Free(f);
return retval;
} /* DIR_remove */
static int DIR_mkdir(dvoid *opaque, const char *name)
{
char *f = __PHYSFS_platformCvtToDependent((char *) opaque, name, NULL);
int retval;
BAIL_IF_MACRO(f == NULL, NULL, 0);
retval = __PHYSFS_platformMkDir(f);
allocator.Free(f);
return retval;
} /* DIR_mkdir */
static void DIR_dirClose(dvoid *opaque)
{
allocator.Free(opaque);
} /* DIR_dirClose */
static int DIR_stat(dvoid *opaque, const char *name, int *exists,
PHYSFS_Stat *stat)
{
char *d = __PHYSFS_platformCvtToDependent((char *) opaque, name, NULL);
int retval = 0;
BAIL_IF_MACRO(d == NULL, NULL, 0);
retval = __PHYSFS_platformStat(d, exists, stat);
allocator.Free(d);
return retval;
} /* DIR_stat */
const PHYSFS_ArchiveInfo __PHYSFS_ArchiveInfo_DIR =
{
"",
DIR_ARCHIVE_DESCRIPTION,
"Ryan C. Gordon <icculus@icculus.org>",
"http://icculus.org/physfs/",
};
const PHYSFS_Archiver __PHYSFS_Archiver_DIR =
{
&__PHYSFS_ArchiveInfo_DIR,
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_dirClose, /* dirClose() method */
DIR_stat /* stat() method */
};
/* end of dir.c ... */