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mime: rewrite detection function

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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2015-08-17 14:35:20 +02:00
parent 790d2498cb
commit 73f199be3f
1 changed files with 26 additions and 36 deletions
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58
shared.c
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@ -563,49 +563,39 @@ char *expand_macros(const char *txt)
char *get_mimetype_for_filename(const char *filename) char *get_mimetype_for_filename(const char *filename)
{ {
static const char *delimiters; char *ext, *mimetype, *token, line[1024];
char *ext = NULL, *iterate, *mimetype = NULL, *token; FILE *file;
char line[1024];
FILE *fd;
struct string_list_item *mime; struct string_list_item *mime;
if (filename == NULL) if (!filename)
return NULL; return NULL;
ext = strrchr(filename, '.'); ext = strrchr(filename, '.');
if (!ext)
if (ext && *(++ext)) {
mime = string_list_lookup(&ctx.cfg.mimetypes, ext);
if (mime) {
/* We could just pass the pointer here, but would have to care
* whether or not to free the memory. Instead just dup. */
mimetype = xstrdup(mime->util);
} else if (ctx.cfg.mimetype_file != NULL) {
fd = fopen(ctx.cfg.mimetype_file, "r");
if (fd == NULL)
return NULL; return NULL;
++ext;
if (!ext[0])
return NULL;
mime = string_list_lookup(&ctx.cfg.mimetypes, ext);
if (mime)
return xstrdup(mime->util);
delimiters = " \t\r\n"; if (!ctx.cfg.mimetype_file)
return NULL;
/* loop over all lines in the file */ file = fopen(ctx.cfg.mimetype_file, "r");
while (mimetype == NULL && fgets(line, sizeof(line), fd)) { if (!file)
iterate = strtok(line, delimiters); return NULL;
while (fgets(line, sizeof(line), file)) {
/* skip empty lines and comment lines */ if (!line[0] || line[0] == '#')
if (iterate == NULL || (iterate[0] == '#'))
continue; continue;
mimetype = strtok(line, " \t\r\n");
/* loop over all extensions of mimetype */ while ((token = strtok(NULL, " \t\r\n"))) {
while ((token = strtok(NULL, delimiters))) { if (!strcasecmp(ext, token)) {
if (strcasecmp(ext, token) == 0) { fclose(file);
mimetype = xstrdup(iterate); return xstrdup(mimetype);
break;
} }
} }
} }
fclose(fd); fclose(file);
} return NULL;
}
return mimetype;
} }