* Autores: Leandro Lucarella <llucare@fi.uba.ar>
*----------------------------------------------------------------------------
*
- * $Id: bufford.c 624 2004-05-30 20:18:04Z llucare $
+ * $Id$
*
*/
return ret;
}
+int vfeof(VFILE* vfp)
+{
+ return vfp->lastvol && feof(vfp->fp);
+}
+
int vfgetc(VFILE* vfp)
{
int c;
size_t vfread(void* ptr, size_t size, size_t nmemb, VFILE* vfp)
{
- return 0;
+ int c;
+ size_t i = 0;
+ size_t total = size * nmemb;
+ /* leo uno a uno y si hay error salgo. */
+ while (i < total)
+ {
+ if ((c = vfgetc(vfp)) == EOF)
+ {
+ PERR("vfread: EOF");
+ break;
+ }
+ else ((char*)ptr)[i++] = c;
+ }
+ return i / size;
}
size_t vfwrite(const void *ptr, size_t size, size_t nmemb, VFILE* vfp)
{
- return 0;
+ size_t i = 0;
+ size_t total = size * nmemb;
+ /* escribo uno a uno y si hay error salgo. */
+ while (i < total && (vfputc(((char*)ptr)[i++], vfp)) != EOF);
+ return i / size;
}
int vfvol_close(VFILE* vfp)
return 0;
}
+long vfsize(const char* path)
+{
+ VFILE* vfp = vfopen(path, "r", 0);
+ long size;
+ if (!vfp) return -1; /* error */
+ if (fseek(vfp->fp, 0l, SEEK_END) == -1)
+ {
+ vfclose(vfp);
+ return -1; /* error */
+ }
+ else
+ {
+ size = ftell(vfp->fp);
+ if (size == -1)
+ {
+ vfclose(vfp);
+ return -1; /* error */
+ }
+ }
+ while (!vfp->lastvol) /* mientras no sea el Ășltimo volumen */
+ {
+ if (vfvol_open_next(vfp))
+ {
+ vfclose(vfp);
+ return -1; /* error */
+ }
+ if (fseek(vfp->fp, 0l, SEEK_END) == -1)
+ {
+ vfclose(vfp);
+ return -1; /* error */
+ }
+ else
+ {
+ long curr_size = ftell(vfp->fp);
+ if (curr_size == -1)
+ {
+ vfclose(vfp);
+ return -1; /* error */
+ }
+ size += curr_size;
+ }
+ if (vfvol_close(vfp))
+ {
+ vfclose(vfp);
+ return -1; /* error */
+ }
+ }
+ vfclose(vfp);
+ return size;
+}
+