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#include "mupdf/fitz.h"
/* Produce a (hopefully) unique temporary filename based upon a given
* 'base' name, with a 'hint' for where to create it.
*
* Isolated into a file that can be modified on a per-platform basis
* if required.
*/
/* For now, put temporary files with the hint. */
#define USE_HINT_FOR_DIR
#if defined(_WIN32) || defined(_WIN64)
#define DIRSEP '\\'
#else
#define DIRSEP '/'
#endif
char *fz_tempfilename(fz_context *ctx, const char *base, const char *hint)
{
char *tmp;
char *ret;
#ifdef USE_HINT_FOR_DIR
char *hintpath;
size_t hintlen;
hintlen = strlen(hint);
hintpath = fz_malloc(ctx, 1 + hintlen);
if (hint == NULL)
fz_throw(ctx, FZ_ERROR_GENERIC, "Failed to construct temporary file name");
while (hintlen > 0 && hint[hintlen-1] != DIRSEP)
hintlen--;
if (hintlen > 0)
memcpy(hintpath, hint, hintlen);
hintpath[hintlen] = 0;
tmp = tempnam(hintlen > 0 ? hintpath : ".", base);
fz_free(ctx, hintpath);
#else
tmp = tempnam(".", base);
#endif
if (tmp == NULL)
fz_throw(ctx, FZ_ERROR_GENERIC, "Failed to construct temporary file name");
ret = fz_strdup(ctx, tmp);
/* The value returned from tempnam is allocated using malloc.
* We must therefore free it using free. Real, honest to God
* free, not Memento_free, or other wrapped versions.
*/
#undef free
(free)(tmp);
return ret;
}
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