X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=demo_prior;a=blobdiff_plain;f=libs%2Fimago2%2Fsrc%2Fftype_module.c;fp=libs%2Fimago2%2Fsrc%2Fftype_module.c;h=a3d3b0402b60769e7a610222662b01d73385c919;hp=0000000000000000000000000000000000000000;hb=3a9f6854df479d81442273c9d0b133c49c5c8f66;hpb=0b24071f728b7c8550daa1b7aa7c4012cb70ef4c

diff --git a/libs/imago2/src/ftype_module.c b/libs/imago2/src/ftype_module.c
new file mode 100644
index 0000000..a3d3b04
--- /dev/null
+++ b/libs/imago2/src/ftype_module.c
@@ -0,0 +1,118 @@
+/*
+libimago - a multi-format image file input/output library.
+Copyright (C) 2010 John Tsiombikas <nuclear@member.fsf.org>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published
+by the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdlib.h>
+#include <string.h>
+#include "ftype_module.h"
+
+static struct list_node {
+	struct ftype_module *module;
+	struct list_node *next;
+} *modules;
+
+/* defined in modules.c which is generated by configure */
+void img_modules_init();
+
+static int done_init;
+
+int img_register_module(struct ftype_module *mod)
+{
+	struct list_node *node;
+
+	if(!(node = malloc(sizeof *node))) {
+		return -1;
+	}
+
+	node->module = mod;
+	node->next = modules;
+	modules = node;
+	return 0;
+}
+
+struct ftype_module *img_find_format_module(struct img_io *io)
+{
+	struct list_node *node;
+
+	if(!done_init) {
+		img_modules_init();
+		done_init = 1;
+	}
+
+	node = modules;
+	while(node) {
+		if(node->module->check(io) != -1) {
+			return node->module;
+		}
+		node = node->next;
+	}
+	return 0;
+}
+
+struct ftype_module *img_guess_format(const char *fname)
+{
+	struct list_node *node;
+	char *suffix;
+	int suffix_len;
+
+	if(!done_init) {
+		img_modules_init();
+		done_init = 1;
+	}
+
+	if(!(suffix = strrchr(fname, '.'))) {
+		return 0;	/* no suffix, can't guess ... */
+	}
+	suffix_len = (int)strlen(suffix);
+
+	node = modules;
+	while(node) {
+		char *suflist = node->module->suffix;
+		char *start, *end;
+
+		while(*suflist) {
+			if(!(start = strstr(suflist, suffix))) {
+				break;
+			}
+			end = start + suffix_len;
+
+			if(*end == ':' || *end == 0) {
+				return node->module;	/* found it */
+			}
+			suflist = end;
+		}
+
+		node = node->next;
+	}
+	return 0;
+}
+
+struct ftype_module *img_get_module(int idx)
+{
+	struct list_node *node;
+
+	if(!done_init) {
+		img_modules_init();
+		done_init = 1;
+	}
+
+	node = modules;
+	while(node && idx--) {
+		node = node->next;
+	}
+	return node->module;
+}