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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/********************************************************
* The native file-system
********************************************************/
#include "gfx.h"
#if GFX_USE_GFILE && GFILE_NEED_NATIVEFS
#include "gfile_fs.h"
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
static bool_t NativeDel(const char *fname);
static bool_t NativeExists(const char *fname);
static long int NativeFilesize(const char *fname);
static bool_t NativeRen(const char *oldname, const char *newname);
static bool_t NativeOpen(GFILE *f, const char *fname);
static void NativeClose(GFILE *f);
static int NativeRead(GFILE *f, void *buf, int size);
static int NativeWrite(GFILE *f, const void *buf, int size);
static bool_t NativeSetpos(GFILE *f, long int pos);
static long int NativeGetsize(GFILE *f);
static bool_t NativeEof(GFILE *f);
#if GFILE_NEED_FILELISTS
static gfileList *NativeFlOpen(const char *path, bool_t dirs);
static const char *NativeFlRead(gfileList *pfl);
static void NativeFlClose(gfileList *pfl);
#endif
const GFILEVMT FsNativeVMT = {
#if defined(WIN32) || GFX_USE_OS_WIN32
GFSFLG_TEXTMODES|
#else
GFSFLG_CASESENSITIVE|
#endif
GFSFLG_WRITEABLE|GFSFLG_SEEKABLE|GFSFLG_FAST, // flags
'N', // prefix
NativeDel, NativeExists, NativeFilesize, NativeRen,
NativeOpen, NativeClose, NativeRead, NativeWrite,
NativeSetpos, NativeGetsize, NativeEof,
0, 0, 0,
#if GFILE_NEED_FILELISTS
NativeFlOpen, NativeFlRead, NativeFlClose
#endif
};
void _gfileNativeAssignStdio(void) {
static GFILE NativeStdIn;
static GFILE NativeStdOut;
static GFILE NativeStdErr;
NativeStdIn.flags = GFILEFLG_OPEN|GFILEFLG_READ;
NativeStdIn.vmt = &FsNativeVMT;
NativeStdIn.obj = (void *)stdin;
NativeStdIn.pos = 0;
gfileStdIn = &NativeStdIn;
NativeStdOut.flags = GFILEFLG_OPEN|GFILEFLG_WRITE|GFILEFLG_APPEND;
NativeStdOut.vmt = &FsNativeVMT;
NativeStdOut.obj = (void *)stdout;
NativeStdOut.pos = 0;
gfileStdOut = &NativeStdOut;
NativeStdErr.flags = GFILEFLG_OPEN|GFILEFLG_WRITE|GFILEFLG_APPEND;
NativeStdErr.vmt = &FsNativeVMT;
NativeStdErr.obj = (void *)stderr;
NativeStdErr.pos = 0;
gfileStdErr = &NativeStdErr;
}
static void Native_flags2mode(char *buf, uint16_t flags) {
if (flags & GFILEFLG_MUSTEXIST)
*buf = 'r';
else if (flags & GFILEFLG_APPEND)
*buf = 'a';
else
*buf = 'w';
buf++;
if ((flags & (GFILEFLG_READ|GFILEFLG_WRITE)) == (GFILEFLG_READ|GFILEFLG_WRITE))
*buf++ = '+';
if (flags & GFILEFLG_BINARY)
*buf++ = 'b';
if (flags & GFILEFLG_MUSTNOTEXIST)
*buf++ = 'x';
*buf++ = 0;
}
static bool_t NativeDel(const char *fname) { return remove(fname) ? FALSE : TRUE; }
static void NativeClose(GFILE *f) { fclose((FILE *)f->obj); }
static int NativeRead(GFILE *f, void *buf, int size) { return fread(buf, 1, size, (FILE *)f->obj); }
static int NativeWrite(GFILE *f, const void *buf, int size) { return fwrite(buf, 1, size, (FILE *)f->obj); }
static bool_t NativeSetpos(GFILE *f, long int pos) { return fseek((FILE *)f->obj, pos, SEEK_SET) ? FALSE : TRUE; }
static bool_t NativeEof(GFILE *f) { return feof((FILE *)f->obj) ? TRUE : FALSE; }
static bool_t NativeRen(const char *oldname, const char *newname) { return rename(oldname, newname) ? FALSE : TRUE; }
static bool_t NativeExists(const char *fname) {
// We define access this way so we don't have to include <unistd.h> which may
// (and does under windows) contain conflicting definitions for types such as uint16_t.
extern int access(const char *pathname, int mode);
return access(fname, 0) ? FALSE : TRUE;
}
static long int NativeFilesize(const char *fname) {
struct stat st;
if (stat(fname, &st)) return -1;
return st.st_size;
}
static bool_t NativeOpen(GFILE *f, const char *fname) {
FILE *fd;
char mode[5];
Native_flags2mode(mode, f->flags);
if (!(fd = fopen(fname, mode)))
return FALSE;
f->obj = (void *)fd;
return TRUE;
}
static long int NativeGetsize(GFILE *f) {
struct stat st;
if (fstat(fileno((FILE *)f->obj), &st)) return -1;
return st.st_size;
}
#if GFILE_NEED_FILELISTS
#if defined(WIN32) || GFX_USE_OS_WIN32
typedef struct NativeFileList {
gfileList fl;
HANDLE d;
WIN32_FIND_DATA f;
bool_t first;
} NativeFileList;
static gfileList *NativeFlOpen(const char *path, bool_t dirs) {
NativeFileList *p;
(void) dirs;
if (!(p = gfxAlloc(sizeof(NativeFileList))))
return 0;
if ((p->d = FindFirstFile(path, &p->f)) == INVALID_HANDLE_VALUE) {
gfxFree(p);
return 0;
}
p->first = TRUE;
return &p->fl;
}
static const char *NativeFlRead(gfileList *pfl) {
#define nfl ((NativeFileList *)pfl)
while(1) {
if (!nfl->first && !FindNextFile(nfl->d, &nfl->f))
return 0;
nfl->first = FALSE;
if (nfl->f.cFileName[0] == '.')
continue;
if (nfl->fl.dirs) {
if ((nfl->f.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
break;
} else {
if (!(nfl->f.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
break;
}
}
return nfl->f.cFileName;
#undef nfl
}
static void NativeFlClose(gfileList *pfl) {
CloseHandle(((NativeFileList *)pfl)->d);
gfxFree(pfl);
}
#else
#include <dirent.h>
typedef struct NativeFileList {
gfileList fl;
DIR * d;
struct dirent * f;
} NativeFileList;
static gfileList *NativeFlOpen(const char *path, bool_t dirs) {
NativeFileList *p;
(void) dirs;
if (!(p = gfxAlloc(sizeof(NativeFileList))))
return 0;
if (!(p->d = opendir(path))) {
gfxFree(p);
return 0;
}
return &p->fl;
}
static const char *NativeFlRead(gfileList *pfl) {
#define nfl ((NativeFileList *)pfl)
while(1) {
if (!(nfl->f = readdir(nfl->d)))
return 0;
if (nfl->f->d_name[0] == '.')
continue;
#ifdef _DIRENT_HAVE_D_TYPE
if (nfl->fl.dirs) {
if (nfl->f->d_type == DT_DIR)
break;
} else {
if (nfl->f->d_type == DT_REG)
break;
}
#else
// Oops - no type field. We could use stat() here but that would mean
// concatting the supplied path to the found filename.
// That all just seems too hard. Instead we just don't
// distinguish between files and directories.
break;
#endif
}
return nfl->f->d_name;
#undef nfl
}
static void NativeFlClose(gfileList *pfl) {
closedir(((NativeFileList *)pfl)->d);
gfxFree(pfl);
}
#endif
#endif
#endif //GFX_USE_GFILE && GFILE_NEED_NATIVEFS
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