313 lines
9.2 KiB
C
313 lines
9.2 KiB
C
/*
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* Standard directory I/O support routines for PhysicsFS.
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*
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* Please see the file LICENSE in the source's root directory.
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*
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* This file written by Ryan C. Gordon.
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*/
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "physfs.h"
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#define __PHYSICSFS_INTERNAL__
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#include "physfs_internal.h"
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static PHYSFS_sint64 DIR_read(fvoid *opaque, void *buffer,
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PHYSFS_uint32 objSize, PHYSFS_uint32 objCount);
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static PHYSFS_sint64 DIR_write(fvoid *opaque, const void *buffer,
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PHYSFS_uint32 objSize, PHYSFS_uint32 objCount);
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static int DIR_eof(fvoid *opaque);
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static PHYSFS_sint64 DIR_tell(fvoid *opaque);
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static int DIR_seek(fvoid *opaque, PHYSFS_uint64 offset);
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static PHYSFS_sint64 DIR_fileLength(fvoid *opaque);
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static int DIR_fileClose(fvoid *opaque);
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static int DIR_isArchive(const char *filename, int forWriting);
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static void *DIR_openArchive(const char *name, int forWriting);
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static LinkedStringList *DIR_enumerateFiles(dvoid *opaque,
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const char *dname,
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int omitSymLinks);
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static int DIR_exists(dvoid *opaque, const char *name);
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static int DIR_isDirectory(dvoid *opaque, const char *name, int *fileExists);
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static int DIR_isSymLink(dvoid *opaque, const char *name, int *fileExists);
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static fvoid *DIR_openRead(dvoid *opaque, const char *fnm, int *exist);
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static PHYSFS_sint64 DIR_getLastModTime(dvoid *opaque, const char *f, int *e);
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static fvoid *DIR_openWrite(dvoid *opaque, const char *filename);
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static fvoid *DIR_openAppend(dvoid *opaque, const char *filename);
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static int DIR_remove(dvoid *opaque, const char *name);
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static int DIR_mkdir(dvoid *opaque, const char *name);
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static void DIR_dirClose(dvoid *opaque);
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const PHYSFS_ArchiveInfo __PHYSFS_ArchiveInfo_DIR =
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{
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"",
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DIR_ARCHIVE_DESCRIPTION,
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"Ryan C. Gordon <icculus@clutteredmind.org>",
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"http://icculus.org/physfs/",
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};
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const PHYSFS_Archiver __PHYSFS_Archiver_DIR =
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{
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&__PHYSFS_ArchiveInfo_DIR,
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DIR_isArchive, /* isArchive() method */
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DIR_openArchive, /* openArchive() method */
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DIR_enumerateFiles, /* enumerateFiles() method */
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DIR_exists, /* exists() method */
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DIR_isDirectory, /* isDirectory() method */
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DIR_isSymLink, /* isSymLink() method */
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DIR_getLastModTime, /* getLastModTime() method */
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DIR_openRead, /* openRead() method */
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DIR_openWrite, /* openWrite() method */
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DIR_openAppend, /* openAppend() method */
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DIR_remove, /* remove() method */
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DIR_mkdir, /* mkdir() method */
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DIR_dirClose, /* dirClose() method */
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DIR_read, /* read() method */
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DIR_write, /* write() method */
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DIR_eof, /* eof() method */
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DIR_tell, /* tell() method */
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DIR_seek, /* seek() method */
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DIR_fileLength, /* fileLength() method */
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DIR_fileClose /* fileClose() method */
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};
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static PHYSFS_sint64 DIR_read(fvoid *opaque, void *buffer,
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PHYSFS_uint32 objSize, PHYSFS_uint32 objCount)
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{
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PHYSFS_sint64 retval;
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retval = __PHYSFS_platformRead(opaque, buffer, objSize, objCount);
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return(retval);
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} /* DIR_read */
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static PHYSFS_sint64 DIR_write(fvoid *opaque, const void *buffer,
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PHYSFS_uint32 objSize, PHYSFS_uint32 objCount)
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{
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PHYSFS_sint64 retval;
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retval = __PHYSFS_platformWrite(opaque, buffer, objSize, objCount);
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return(retval);
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} /* DIR_write */
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static int DIR_eof(fvoid *opaque)
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{
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return(__PHYSFS_platformEOF(opaque));
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} /* DIR_eof */
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static PHYSFS_sint64 DIR_tell(fvoid *opaque)
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{
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return(__PHYSFS_platformTell(opaque));
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} /* DIR_tell */
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static int DIR_seek(fvoid *opaque, PHYSFS_uint64 offset)
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{
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return(__PHYSFS_platformSeek(opaque, offset));
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} /* DIR_seek */
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static PHYSFS_sint64 DIR_fileLength(fvoid *opaque)
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{
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return(__PHYSFS_platformFileLength(opaque));
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} /* DIR_fileLength */
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static int DIR_fileClose(fvoid *opaque)
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{
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/*
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* we manually flush the buffer, since that's the place a close will
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* most likely fail, but that will leave the file handle in an undefined
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* state if it fails. Flush failures we can recover from.
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*/
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BAIL_IF_MACRO(!__PHYSFS_platformFlush(opaque), NULL, 0);
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BAIL_IF_MACRO(!__PHYSFS_platformClose(opaque), NULL, 0);
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return(1);
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} /* DIR_fileClose */
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static int DIR_isArchive(const char *filename, int forWriting)
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{
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/* directories ARE archives in this driver... */
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return(__PHYSFS_platformIsDirectory(filename));
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} /* DIR_isArchive */
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static void *DIR_openArchive(const char *name, int forWriting)
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{
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const char *dirsep = PHYSFS_getDirSeparator();
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char *retval = NULL;
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size_t namelen = strlen(name);
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size_t seplen = strlen(dirsep);
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/* !!! FIXME: when is this not called right before openArchive? */
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BAIL_IF_MACRO(!DIR_isArchive(name, forWriting),
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ERR_UNSUPPORTED_ARCHIVE, 0);
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retval = malloc(namelen + seplen + 1);
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BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
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/* make sure there's a dir separator at the end of the string */
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strcpy(retval, name);
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if (strcmp((name + namelen) - seplen, dirsep) != 0)
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strcat(retval, dirsep);
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return(retval);
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} /* DIR_openArchive */
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static LinkedStringList *DIR_enumerateFiles(dvoid *opaque,
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const char *dname,
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int omitSymLinks)
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{
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char *d = __PHYSFS_platformCvtToDependent((char *)opaque, dname, NULL);
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LinkedStringList *retval;
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BAIL_IF_MACRO(d == NULL, NULL, NULL);
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retval = __PHYSFS_platformEnumerateFiles(d, omitSymLinks);
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free(d);
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return(retval);
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} /* DIR_enumerateFiles */
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static int DIR_exists(dvoid *opaque, const char *name)
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{
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char *f = __PHYSFS_platformCvtToDependent((char *) opaque, name, NULL);
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int retval;
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BAIL_IF_MACRO(f == NULL, NULL, 0);
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retval = __PHYSFS_platformExists(f);
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free(f);
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return(retval);
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} /* DIR_exists */
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static int DIR_isDirectory(dvoid *opaque, const char *name, int *fileExists)
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{
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char *d = __PHYSFS_platformCvtToDependent((char *) opaque, name, NULL);
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int retval = 0;
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BAIL_IF_MACRO(d == NULL, NULL, 0);
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*fileExists = __PHYSFS_platformExists(d);
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if (*fileExists)
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retval = __PHYSFS_platformIsDirectory(d);
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free(d);
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return(retval);
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} /* DIR_isDirectory */
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static int DIR_isSymLink(dvoid *opaque, const char *name, int *fileExists)
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{
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char *f = __PHYSFS_platformCvtToDependent((char *) opaque, name, NULL);
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int retval = 0;
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BAIL_IF_MACRO(f == NULL, NULL, 0);
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*fileExists = __PHYSFS_platformExists(f);
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if (*fileExists)
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retval = __PHYSFS_platformIsSymLink(f);
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free(f);
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return(retval);
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} /* DIR_isSymLink */
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static PHYSFS_sint64 DIR_getLastModTime(dvoid *opaque,
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const char *name,
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int *fileExists)
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{
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char *d = __PHYSFS_platformCvtToDependent((char *) opaque, name, NULL);
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PHYSFS_sint64 retval = -1;
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BAIL_IF_MACRO(d == NULL, NULL, 0);
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*fileExists = __PHYSFS_platformExists(d);
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if (*fileExists)
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retval = __PHYSFS_platformGetLastModTime(d);
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free(d);
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return(retval);
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} /* DIR_getLastModTime */
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static fvoid *doOpen(dvoid *opaque, const char *name,
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void *(*openFunc)(const char *filename),
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int *fileExists)
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{
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char *f = __PHYSFS_platformCvtToDependent((char *) opaque, name, NULL);
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void *rc = NULL;
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BAIL_IF_MACRO(f == NULL, NULL, NULL);
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if (fileExists != NULL)
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{
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*fileExists = __PHYSFS_platformExists(f);
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if (!(*fileExists))
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{
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free(f);
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return(NULL);
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} /* if */
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} /* if */
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rc = openFunc(f);
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free(f);
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return((fvoid *) rc);
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} /* doOpen */
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static fvoid *DIR_openRead(dvoid *opaque, const char *fnm, int *exist)
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{
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return(doOpen(opaque, fnm, __PHYSFS_platformOpenRead, exist));
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} /* DIR_openRead */
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static fvoid *DIR_openWrite(dvoid *opaque, const char *filename)
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{
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return(doOpen(opaque, filename, __PHYSFS_platformOpenWrite, NULL));
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} /* DIR_openWrite */
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static fvoid *DIR_openAppend(dvoid *opaque, const char *filename)
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{
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return(doOpen(opaque, filename, __PHYSFS_platformOpenAppend, NULL));
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} /* DIR_openAppend */
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static int DIR_remove(dvoid *opaque, const char *name)
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{
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char *f = __PHYSFS_platformCvtToDependent((char *) opaque, name, NULL);
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int retval;
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BAIL_IF_MACRO(f == NULL, NULL, 0);
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retval = __PHYSFS_platformDelete(f);
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free(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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{
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char *f = __PHYSFS_platformCvtToDependent((char *) opaque, name, NULL);
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int retval;
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BAIL_IF_MACRO(f == NULL, NULL, 0);
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retval = __PHYSFS_platformMkDir(f);
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free(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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{
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free(opaque);
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} /* DIR_dirClose */
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/* end of dir.c ... */
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