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146 lines
3.3 KiB
C
146 lines
3.3 KiB
C
/* _______ ____ __ ___ ___
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* \ _ \ \ / \ / \ \ / / ' ' '
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* | | \ \ | | || | \/ | . .
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* | | | | | | || ||\ /| |
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* | | | | | | || || \/ | | ' ' '
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* | | | | | | || || | | . .
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* | |_/ / \ \__// || | |
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* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
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* / \
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* / . \
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* stdfile.c - stdio file input module. / / \ \
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* | < / \_
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* By entheh. | \/ /\ /
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* \_ / > /
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* | \ / /
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* | ' /
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* \__/
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*/
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#include <stdio.h>
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#include "dumb.h"
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typedef struct dumb_stdfile
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{
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FILE * file;
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long size;
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} dumb_stdfile;
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static void *DUMBCALLBACK dumb_stdfile_open(const char *filename)
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{
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dumb_stdfile * file = ( dumb_stdfile * ) malloc( sizeof(dumb_stdfile) );
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if ( !file ) return 0;
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file->file = fopen(filename, "rb");
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fseek(file->file, 0, SEEK_END);
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file->size = ftell(file->file);
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fseek(file->file, 0, SEEK_SET);
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return file;
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}
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static int DUMBCALLBACK dumb_stdfile_skip(void *f, long n)
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{
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dumb_stdfile * file = ( dumb_stdfile * ) f;
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return fseek(file->file, n, SEEK_CUR);
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}
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static int DUMBCALLBACK dumb_stdfile_getc(void *f)
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{
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dumb_stdfile * file = ( dumb_stdfile * ) f;
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return fgetc(file->file);
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}
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static int32 DUMBCALLBACK dumb_stdfile_getnc(char *ptr, int32 n, void *f)
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{
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dumb_stdfile * file = ( dumb_stdfile * ) f;
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return (int32)fread(ptr, 1, n, file->file);
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}
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static void DUMBCALLBACK dumb_stdfile_close(void *f)
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{
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dumb_stdfile * file = ( dumb_stdfile * ) f;
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fclose(file->file);
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free(f);
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}
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static void DUMBCALLBACK dumb_stdfile_noclose(void *f)
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{
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free(f);
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}
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static int DUMBCALLBACK dumb_stdfile_seek(void *f, long n)
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{
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dumb_stdfile * file = ( dumb_stdfile * ) f;
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return fseek(file->file, n, SEEK_SET);
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}
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static long DUMBCALLBACK dumb_stdfile_get_size(void *f)
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{
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dumb_stdfile * file = ( dumb_stdfile * ) f;
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return file->size;
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}
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static const DUMBFILE_SYSTEM stdfile_dfs = {
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&dumb_stdfile_open,
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&dumb_stdfile_skip,
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&dumb_stdfile_getc,
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&dumb_stdfile_getnc,
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&dumb_stdfile_close,
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&dumb_stdfile_seek,
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&dumb_stdfile_get_size
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};
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void DUMBEXPORT dumb_register_stdfiles(void)
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{
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register_dumbfile_system(&stdfile_dfs);
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}
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static const DUMBFILE_SYSTEM stdfile_dfs_leave_open = {
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NULL,
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&dumb_stdfile_skip,
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&dumb_stdfile_getc,
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&dumb_stdfile_getnc,
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&dumb_stdfile_noclose,
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&dumb_stdfile_seek,
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&dumb_stdfile_get_size
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};
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DUMBFILE *DUMBEXPORT dumbfile_open_stdfile(FILE *p)
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{
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dumb_stdfile * file = ( dumb_stdfile * ) malloc( sizeof(dumb_stdfile) );
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DUMBFILE *d;
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if ( !file ) return 0;
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file->file = p;
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fseek(p, 0, SEEK_END);
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file->size = ftell(p);
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fseek(p, 0, SEEK_SET);
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d = dumbfile_open_ex(file, &stdfile_dfs_leave_open);
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return d;
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}
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