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