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annotate libs/imago/ftype_module.c @ 16:c6952cc82cca

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asset manager, android version
author John Tsiombikas <nuclear@member.fsf.org>
date Tue, 09 Jun 2015 18:38:33 +0300
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nuclear@14 1 /*
nuclear@14 2 libimago - a multi-format image file input/output library.
nuclear@14 3 Copyright (C) 2010 John Tsiombikas <nuclear@member.fsf.org>
nuclear@14 4
nuclear@14 5 This program is free software: you can redistribute it and/or modify
nuclear@14 6 it under the terms of the GNU Lesser General Public License as published
nuclear@14 7 by the Free Software Foundation, either version 3 of the License, or
nuclear@14 8 (at your option) any later version.
nuclear@14 9
nuclear@14 10 This program is distributed in the hope that it will be useful,
nuclear@14 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@14 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
nuclear@14 13 GNU Lesser General Public License for more details.
nuclear@14 14
nuclear@14 15 You should have received a copy of the GNU Lesser General Public License
nuclear@14 16 along with this program. If not, see <http://www.gnu.org/licenses/>.
nuclear@14 17 */
nuclear@14 18
nuclear@14 19 #include <stdlib.h>
nuclear@14 20 #include <string.h>
nuclear@14 21 #include "ftype_module.h"
nuclear@14 22
nuclear@14 23 static struct list_node {
nuclear@14 24 struct ftype_module *module;
nuclear@14 25 struct list_node *next;
nuclear@14 26 } *modules;
nuclear@14 27
nuclear@14 28 /* defined in modules.c which is generated by configure */
nuclear@14 29 void img_modules_init();
nuclear@14 30
nuclear@14 31 static int done_init;
nuclear@14 32
nuclear@14 33 int img_register_module(struct ftype_module *mod)
nuclear@14 34 {
nuclear@14 35 struct list_node *node;
nuclear@14 36
nuclear@14 37 if(!(node = malloc(sizeof *node))) {
nuclear@14 38 return -1;
nuclear@14 39 }
nuclear@14 40
nuclear@14 41 node->module = mod;
nuclear@14 42 node->next = modules;
nuclear@14 43 modules = node;
nuclear@14 44 return 0;
nuclear@14 45 }
nuclear@14 46
nuclear@14 47 struct ftype_module *img_find_format_module(struct img_io *io)
nuclear@14 48 {
nuclear@14 49 struct list_node *node;
nuclear@14 50
nuclear@14 51 if(!done_init) {
nuclear@14 52 img_modules_init();
nuclear@14 53 done_init = 1;
nuclear@14 54 }
nuclear@14 55
nuclear@14 56 node = modules;
nuclear@14 57 while(node) {
nuclear@14 58 if(node->module->check(io) != -1) {
nuclear@14 59 return node->module;
nuclear@14 60 }
nuclear@14 61 node = node->next;
nuclear@14 62 }
nuclear@14 63 return 0;
nuclear@14 64 }
nuclear@14 65
nuclear@14 66 struct ftype_module *img_guess_format(const char *fname)
nuclear@14 67 {
nuclear@14 68 struct list_node *node;
nuclear@14 69 char *suffix;
nuclear@14 70 int suffix_len;
nuclear@14 71
nuclear@14 72 if(!done_init) {
nuclear@14 73 img_modules_init();
nuclear@14 74 done_init = 1;
nuclear@14 75 }
nuclear@14 76
nuclear@14 77 if(!(suffix = strrchr(fname, '.'))) {
nuclear@14 78 return 0; /* no suffix, can't guess ... */
nuclear@14 79 }
nuclear@14 80 suffix_len = (int)strlen(suffix);
nuclear@14 81
nuclear@14 82 node = modules;
nuclear@14 83 while(node) {
nuclear@14 84 char *suflist = node->module->suffix;
nuclear@14 85 char *start, *end;
nuclear@14 86
nuclear@14 87 while(*suflist) {
nuclear@14 88 if(!(start = strstr(suflist, suffix))) {
nuclear@14 89 break;
nuclear@14 90 }
nuclear@14 91 end = start + suffix_len;
nuclear@14 92
nuclear@14 93 if(*end == ':' || *end == 0) {
nuclear@14 94 return node->module; /* found it */
nuclear@14 95 }
nuclear@14 96 suflist = end;
nuclear@14 97 }
nuclear@14 98
nuclear@14 99 node = node->next;
nuclear@14 100 }
nuclear@14 101 return 0;
nuclear@14 102 }
nuclear@14 103
nuclear@14 104 struct ftype_module *img_get_module(int idx)
nuclear@14 105 {
nuclear@14 106 struct list_node *node;
nuclear@14 107
nuclear@14 108 if(!done_init) {
nuclear@14 109 img_modules_init();
nuclear@14 110 done_init = 1;
nuclear@14 111 }
nuclear@14 112
nuclear@14 113 node = modules;
nuclear@14 114 while(node && idx--) {
nuclear@14 115 node = node->next;
nuclear@14 116 }
nuclear@14 117 return node->module;
nuclear@14 118 }