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index.js
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index.js
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/**
* fis.baidu.com
* DESC:
* {%widget name="demo:a.tpl" inline%}
* =>
* {%widget_inline%}<!--inline [/a.tpl]-->{%/widget_inline%}
*/
'use strict';
var ld
, rd
, include
, exclude
, ids
, parsed;
var exports = module.exports = function(ret, conf, settings, opt) {
ld = settings.left_delimiter || fis.config.get('settings.smarty.left_delimiter') || '{%';
rd = settings.right_delimiter || fis.config.get('settings.smarty.right_delimiter') || '%}';
//include 读取preprocessor的配置是为了向下兼容
include = settings.include || fis.config.get('settings.preprocessor.widget-inline.include') || null;
//exclude 读取preprocessor的配置是为了向下兼容
exclude = settings.exclude || fis.config.get('settings.preprocessor.widget-inline.exclude') || null;
ids = ret.ids || {};
parsed = {};
fis.util.map(ids, function (src, file) {
if (file.rExt == '.tpl') {
var revertObj = {};
//@TODO, ugly!!!
//prepackager 缓存一定是存在的
if(file.cache.revert(revertObj)) {
file.requires = revertObj.info.requires;
file.extras = revertObj.info.extras;
//存储缓存时获取原缓存附加信息,以防止升级出现兼容问题
revertObj = revertObj.info;
}
embedded(file);
file.cache.save(file.getContent(), revertObj);
}
});
};
var map = fis.compile.lang;
function inline(id, properties) {
id = id || '';
properties = properties || '';
var p, path = id;
if ((p = id.indexOf(':')) !== -1) {
var namespace = id.substr(0, p);
if (namespace != fis.config.get('namespace')) {
return false;
}
}
return ld + 'widget_inline ' + properties + rd /*start*/
+ map.embed.ld + id + map.embed.rd
+ ld + 'require name="' + id + '"' + rd
+ ld + '/widget_inline' + rd; /*end*/
}
function hit(id, include, exclude) {
var toString = Object.prototype.toString;
return !(exclude && toString.apply(exclude) == '[object RegExp]' && exclude.test(id)) && (include && toString.apply(include) == '[object RegExp]' && include.test(id));
}
function preparser(file) {
var inline_re = /\s+inline(?:\s+|$)/i;
var escape_ld = fis.util.escapeReg(ld);
var escape_rd = fis.util.escapeReg(rd);
var widget_re = new RegExp(escape_ld + 'widget(?:((?=\\s)[\\s\\S]*?["\'\\s\\w\\]`])'+escape_rd+'|'+escape_rd+')', 'ig');
var content = file.getContent();
content = content.replace(widget_re, function(m, properties) {
if (properties) {
var info;
properties = properties.replace(/\sname\s*=\s*('(?:[^\\'\n\r\f]|\\[\s\S])*'|"(?:[^\\"\r\n\f]|\\[\s\S])*"|\S+)/i, function($0, $1) {
if ($1) {
info = fis.util.stringQuote($1);
$0 = '';
}
return $0;
});
if (info && info.rest) {
var res;
if (inline_re.test(properties)) {
res = inline(info.rest, properties.replace(inline_re, '').trim());
} else if (hit(info.rest, include, exclude)) {
res = inline(info.rest, properties);
}
if (res) {
m = res;
}
}
}
return m;
});
return content;
}
var embeddedMap = {};
function error(msg){
//for watching, unable to exit
embeddedMap = {};
fis.log.error(msg);
}
function embeddedCheck(main, embedded){
main = fis.file.wrap(main).realpath;
embedded = fis.file.wrap(embedded).realpath;
if(main === embedded){
error('unable to embed file[' + main + '] into itself.');
} else if(embeddedMap[embedded]) {
var next = embeddedMap[embedded],
msg = [embedded];
while(next && next !== embedded){
msg.push(next);
next = embeddedMap[next];
}
msg.push(embedded);
error('circular dependency on [' + msg.join('] -> [') + '].');
}
embeddedMap[embedded] = main;
return true;
}
function embeddedUnlock(file){
delete embeddedMap[file.realpath];
}
function addDeps(a, b){
if(a && a.cache && b){
if(b.cache){
a.cache.mergeDeps(b.cache);
}
a.cache.addDeps(b.realpath || b);
}
}
function embedded(file) {
if (parsed[file.realpath]) {
return true;
} else {
var path = file.realpath;
var content = preparser(file);
if(typeof content === 'string'){
fis.log.debug('widget_inline start');
//expand language ability
content = content.replace(map.reg, function(all, type, deps, value){
var ret = '', info;
try {
switch(type){
case 'embed':
var f = ids[value];
if(f && f.isFile()){
if(embeddedCheck(file, f)){
embedded(f);
addDeps(file, f); //添加依赖
embeddedUnlock(f);
ret = f.getContent();
}
} else {
fis.log.error('unable to embed non-existent file [' + value + ']');
}
break;
default :
fis.log.error('unsupported fis language tag [' + type + ']');
}
} catch (e) {
embeddedMap = {};
e.message = e.message + ' in [' + file.subpath + ']';
throw e;
}
return ret;
});
fis.log.debug('widget_inline end');
}
file.setContent(content);
parsed[file.realpath] = true;
return true;
}
}