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/* minIni glue functions for FAT library by CCS, Inc. (as provided with their
* PIC MCU compiler)
*
* By CompuPhase, 2011-2012
* This "glue file" is in the public domain. It is distributed without
* warranties or conditions of any kind, either express or implied.
*
* (The FAT library is copyright (c) 2007 Custom Computer Services, and
* licensed at its own terms.)
*/
#define INI_BUFFERSIZE 256 /* maximum line length, maximum path length */
#ifndef FAT_PIC_C
#error FAT library must be included before this module
#endif
#define const /* keyword not supported by CCS */
#define INI_FILETYPE FILE
#define ini_openread(filename,file) (fatopen((filename), "r", (file)) == GOODEC)
#define ini_openwrite(filename,file) (fatopen((filename), "w", (file)) == GOODEC)
#define ini_close(file) (fatclose((file)) == 0)
#define ini_read(buffer,size,file) (fatgets((buffer), (size), (file)) != NULL)
#define ini_write(buffer,file) (fatputs((buffer), (file)) == GOODEC)
#define ini_remove(filename) (rm_file((filename)) == 0)
#define INI_FILEPOS fatpos_t
#define ini_tell(file,pos) (fatgetpos((file), (pos)) == 0)
#define ini_seek(file,pos) (fatsetpos((file), (pos)) == 0)
#ifndef INI_READONLY
/* CCS FAT library lacks a rename function, so instead we copy the file to the
* new name and delete the old file
*/
static int ini_rename(char *source, char *dest)
{
FILE fr, fw;
int n;
if (fatopen(source, "r", &fr) != GOODEC)
return 0;
if (rm_file(dest) != 0)
return 0;
if (fatopen(dest, "w", &fw) != GOODEC)
return 0;
/* With some "insider knowledge", we can save some memory: the "source"
* parameter holds a filename that was built from the "dest" parameter. It
* was built in a local buffer with the size INI_BUFFERSIZE. We can reuse
* this buffer for copying the file.
*/
while (n=fatread(source, 1, INI_BUFFERSIZE, &fr))
fatwrite(source, 1, n, &fw);
fatclose(&fr);
fatclose(&fw);
/* Now we need to delete the source file. However, we have garbled the buffer
* that held the filename of the source. So we need to build it again.
*/
ini_tempname(source, dest, INI_BUFFERSIZE);
return rm_file(source) == 0;
}
#endif
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