archiver_dir.c
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/*
* Standard directory I/O support routines for PhysicsFS.
*
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* Please see the file LICENSE.txt in the source's root directory.
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*
* This file written by Ryan C. Gordon.
*/
#define __PHYSICSFS_INTERNAL__
#include "physfs_internal.h"
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/* There's no PHYSFS_Io interface here. Use __PHYSFS_createNativeIo(). */
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static char *cvtToDependent(const char *prepend, const char *path, char *buf)
{
BAIL_IF_MACRO(buf == NULL, 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)); \
}
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static void *DIR_openArchive(PHYSFS_Io *io, const char *name, int forWriting)
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PHYSFS_Stat statbuf;
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const char dirsep = __PHYSFS_platformDirSeparator;
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char *retval = NULL;
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const size_t namelen = strlen(name);
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const size_t seplen = 1;
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int exists = 0;
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assert(io == NULL); /* shouldn't create an Io for these. */
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BAIL_IF_MACRO(!__PHYSFS_platformStat(name, &exists, &statbuf), NULL, NULL);
if ((!exists) || (statbuf.filetype != PHYSFS_FILETYPE_DIRECTORY))
BAIL_MACRO(ERR_NOT_AN_ARCHIVE, NULL);
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retval = allocator.Malloc(namelen + seplen + 1);
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BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
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strcpy(retval, name);
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/* 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 */
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} /* DIR_openArchive */
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static void DIR_enumerateFiles(dvoid *opaque, const char *dname,
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int omitSymLinks, PHYSFS_EnumFilesCallback cb,
const char *origdir, void *callbackdata)
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char *d;
CVT_TO_DEPENDENT(d, opaque, dname);
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if (d != NULL)
{
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__PHYSFS_platformEnumerateFiles(d, omitSymLinks, cb,
origdir, callbackdata);
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__PHYSFS_smallFree(d);
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} /* DIR_enumerateFiles */
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static PHYSFS_Io *doOpen(dvoid *opaque, const char *name,
const int mode, int *fileExists)
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char *f;
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PHYSFS_Io *io = NULL;
int existtmp = 0;
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CVT_TO_DEPENDENT(f, opaque, name);
BAIL_IF_MACRO(f == NULL, NULL, NULL);
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if (fileExists == NULL)
fileExists = &existtmp;
io = __PHYSFS_createNativeIo(f, mode);
if (io == NULL)
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PHYSFS_Stat statbuf; /* !!! FIXME: this changes the error message. */
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__PHYSFS_platformStat(f, fileExists, &statbuf);
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else
{
*fileExists = 1;
} /* else */
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__PHYSFS_smallFree(f);
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return io;
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} /* doOpen */
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static PHYSFS_Io *DIR_openRead(dvoid *opaque, const char *fnm, int *exist)
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return doOpen(opaque, fnm, 'r', exist);
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} /* DIR_openRead */
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static PHYSFS_Io *DIR_openWrite(dvoid *opaque, const char *filename)
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return doOpen(opaque, filename, 'w', NULL);
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} /* DIR_openWrite */
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static PHYSFS_Io *DIR_openAppend(dvoid *opaque, const char *filename)
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return doOpen(opaque, filename, 'a', NULL);
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} /* DIR_openAppend */
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static int DIR_remove(dvoid *opaque, const char *name)
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{
int retval;
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char *f;
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CVT_TO_DEPENDENT(f, opaque, name);
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BAIL_IF_MACRO(f == NULL, NULL, 0);
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retval = __PHYSFS_platformDelete(f);
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__PHYSFS_smallFree(f);
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return retval;
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} /* DIR_remove */
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static int DIR_mkdir(dvoid *opaque, const char *name)
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{
int retval;
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char *f;
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CVT_TO_DEPENDENT(f, opaque, name);
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BAIL_IF_MACRO(f == NULL, NULL, 0);
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retval = __PHYSFS_platformMkDir(f);
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__PHYSFS_smallFree(f);
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return retval;
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} /* DIR_mkdir */
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static void DIR_dirClose(dvoid *opaque)
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allocator.Free(opaque);
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} /* DIR_dirClose */
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static int DIR_stat(dvoid *opaque, const char *name, int *exists,
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PHYSFS_Stat *stat)
{
int retval = 0;
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char *d;
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CVT_TO_DEPENDENT(d, opaque, name);
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BAIL_IF_MACRO(d == NULL, NULL, 0);
retval = __PHYSFS_platformStat(d, exists, stat);
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__PHYSFS_smallFree(d);
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return retval;
} /* DIR_stat */
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const PHYSFS_ArchiveInfo __PHYSFS_ArchiveInfo_DIR =
{
"",
DIR_ARCHIVE_DESCRIPTION,
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"Ryan C. Gordon <icculus@icculus.org>",
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"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 */
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DIR_stat /* stat() method */
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/* end of dir.c ... */