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react-templates
mirror of https://github.com/bobwen-dev/react-templates
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Initial version

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avim 2014-11-10 12:55:24 +02:00
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commit e7ef23971d
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.gitignore vendored Normal file
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### Operating systems ###
.DS_Store
.AppleDouble
.LSOverride
._*
.Spotlight-V100
.Trashes
### Regular dev ###
node_modules
npm-debug.log
.idea
*.iml
### bower ###
/bower_components/*

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package.json Normal file
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{
"name": "react-templates",
"version": "0.0.0",
"description": "Light weight templates for react -> write html get valid react code",
"main": "reactTemplates.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"repository": {
"type": "git",
"url": "git://github.com/wix/react-templates.git"
},
"author": "Avi Marcus",
"license": "MIT",
"bugs": {
"url": "https://github.com/wix/react-templates/issues"
},
"homepage": "https://github.com/wix/react-templates",
"dependencies": {
"cheerio": "^0.18.0",
"escodegen": "^1.4.1",
"esprima": "^1.2.2"
}
}

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reactTemplates.js Normal file
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/**
* Created by avim on 11/9/2014.
*/
var cheerio = require('cheerio');
var fs = require('fs');
var _ = require('lodash');
var esprima = require('esprima');
var escodegen = require('escodegen');
var path = require('path');
var React = require('react');
var repeatTemplate = _.template("_.map(<%= collection %>,function (<%= item %>,<%= item %>Index) {\n return <%= body %>}, this)");
var ifTemplate = _.template("((<%= condition %>)?(<%= body %>):null)");
var classSetTemplate = _.template("React.addons.classSet(<%= classSet %>)");
var tagTemplate = _.template("<%= name %>.apply(this,_.flatten([<%= props %>].concat([<%= children %>])))");
var commentTemplate = _.template(" /* <%= data %> */ ");
var templateTemplate = _.template("define([<%= requirePaths %>], function (<%= requireNames %>) {\n <%= injectedFunctions %>\nreturn <%= body %>\n});")
var templateProp = "rt-repeat";
var ifProp = "rt-if";
var classSetProp = "rt-class";
var reactSupportedAttributes = ['accept', 'acceptCharset', 'accessKey', 'action', 'allowFullScreen', 'allowTransparency', 'alt', 'async', 'autoComplete', 'autoPlay', 'cellPadding', 'cellSpacing', 'charSet', 'checked', 'classID', 'className', 'cols', 'colSpan', 'content', 'contentEditable', 'contextMenu', 'controls', 'coords', 'crossOrigin', 'data', 'dateTime', 'defer', 'dir', 'disabled', 'download', 'draggable', 'encType', 'form', 'formNoValidate', 'frameBorder', 'height', 'hidden', 'href', 'hrefLang', 'htmlFor', 'httpEquiv', 'icon', 'id', 'label', 'lang', 'list', 'loop', 'manifest', 'max', 'maxLength', 'media', 'mediaGroup', 'method', 'min', 'multiple', 'muted', 'name', 'noValidate', 'open', 'pattern', 'placeholder', 'poster', 'preload', 'radioGroup', 'readOnly', 'rel', 'required', 'role', 'rows', 'rowSpan', 'sandbox', 'scope', 'scrolling', 'seamless', 'selected', 'shape', 'size', 'sizes', 'span', 'spellCheck', 'src', 'srcDoc', 'srcSet', 'start', 'step', 'style', 'tabIndex', 'target', 'title', 'type', 'useMap', 'value', 'width', 'wmode'];
var attributesMapping = {'class':'className','rt-class':'className'};
_.forEach(reactSupportedAttributes,function (attributeReactName) {
if (attributeReactName !== attributeReactName.toLowerCase()) {
attributesMapping[attributeReactName.toLowerCase()] = attributeReactName;
}
});
function concatChildren(children) {
var res = "";
var first = true;
_.forEach(children, function (child) {
if (child.indexOf(" /*") !== 0 && child) {
res += (first?"":",") + child;
first = false;
} else {
res += child;
}
}, this);
return res;
}
var curlyMap = {'{':1, '}': -1};
function convertText(txt) {
txt = txt.trim();
var res = "";
var first = true;
while (txt.indexOf('{') !== -1) {
var start = txt.indexOf('{');
var pre = txt.substr(0,start);
if (pre) {
res += (first?"":"+") + JSON.stringify(pre);
first = false;
}
var curlyCounter = 1;
for (var end = start + 1;end < txt.length && curlyCounter > 0;end++) {
curlyCounter += curlyMap[txt.charAt(end)] || 0;
}
if (curlyCounter !== 0) {
throw "Failed to parse text";
} else {
res += (first?"":"+") + txt.substr(start+1,end-start-2);
first = false;
txt = txt.substr(end);
}
}
if (txt) {
res += (first?"":"+") + JSON.stringify(txt);
}
return res;
}
function isStringOnlyCode(txt) {
txt = txt.trim();
return txt.length && txt.charAt(0) === '{' && txt.charAt(txt.length - 1) === '}';
}
function generateProps(node,context) {
var props = {};
_.forOwn(node.attribs, function (val,key) {
var propKey = attributesMapping[key.toLowerCase()] || key;
if (props.hasOwnProperty(propKey)) {
throw "duplicate definition of "+propKey+" "+JSON.stringify(node.attribs);
}
if (key.indexOf("on") === 0 && !isStringOnlyCode(val)) {
var funcParts = val.split("=>");
var evtParams = funcParts[0].replace("(","").replace(")","").trim();
var funcBody = funcParts[1].trim();
var generatedFuncName = "generated"+(context.injectedFunctions.length + 1);
var params = context.boundParams;
if (evtParams.trim().length > 0) {
params = params.concat(evtParams.trim());
}
var funcText = "function "+generatedFuncName+"("+ params.join(",");
funcText += ") {\n"+funcBody+"\n}\n";
context.injectedFunctions.push(funcText);
props[propKey] = generatedFuncName+".bind("+(["this"].concat(context.boundParams)).join(",")+")";
} else if (key === "style" && !isStringOnlyCode(val)) {
var styleParts = val.trim().split(";");
styleParts = _.compact(_.map(styleParts, function (str) {
str = str.trim();
if (!str || str.indexOf(':') === -1) {
return null;
}
var res = str.split(":");
res[0] = res[0].trim();
res[1] = res[1].trim();
return res;
}));
var styleArray = [];
_.forEach(styleParts, function (stylePart) {
styleArray.push(stylePart[0] + " : " + convertText(stylePart[1]))
});
props[propKey] = "{" + styleArray.join(",") + "}";
} else if (key === classSetProp) {
props[propKey] = classSetTemplate({classSet:val});
} else if (key.indexOf("rt-") !== 0) {
props[propKey] = convertText(val);
}
});
return "{"+ _.map(props, function (val,key) {
return JSON.stringify(key) + " : "+val;
}).join(",")+"}";
}
function convertTagNameToConsstructor(tagName) {
return React.DOM.hasOwnProperty(tagName)?"React.DOM."+tagName:tagName;
}
function defaultContext() {
return {
boundParams: [],
injectedFunctions: []
}
}
function convertHtmlToReact(node,context) {
if (node.type === "tag") {
context.boundParams = _.clone(context.boundParams);
var data = {name: convertTagNameToConsstructor(node.name)};
if (node.attribs[templateProp]) {
data.item = node.attribs[templateProp].split(" in ")[0].trim();
data.collection = node.attribs[templateProp].split(" in ")[1].trim();
context.boundParams.push(data.item);
}
data.props = generateProps(node,context);
if (node.attribs[ifProp]) {
data.condition = node.attribs[ifProp].trim();
}
data.children = concatChildren(_.map(node.children,function (child) {
return convertHtmlToReact(child,context);
}));
data.body = tagTemplate(data);
if (node.attribs[templateProp]) {
data.body = repeatTemplate(data);
}
if (node.attribs[ifProp]) {
data.body = ifTemplate(data);
}
return data.body;
} else if (node.type === "comment") {
return (commentTemplate(node));
} else if (node.type === "text") {
if (node.data.trim()) {
return convertText(node.data.trim());
} else {
return "";
}
}
}
function extractDefinesFromJSXTag(html,defines) {
html = html.replace(/\<\!doctype jsx\s*(.*?)\s*\>/, function(full, reqStr) {
var match = true;
while (match) {
match = false;
reqStr = reqStr.replace(/\s*(\w+)\s*\=\s*\"([^\"]*)\"\s*/, function(full, varName, reqPath) {
defines[reqPath] = varName;
match = true;
return "";
});
}
return "";
});
return html;
}
function convertTemplateToReact(html) {
var defines = {"react":"React","lodash":"_"};
html = extractDefinesFromJSXTag(html,defines);
var rootNode = cheerio.load(html.trim(),{lowerCaseTags:false,lowerCaseAttributeNames:false,xmlMode:true});
var context = defaultContext();
var body = convertHtmlToReact(rootNode.root()[0].children[0],context);
var requirePaths = _(defines).keys().map(function (reqName) {return '"'+reqName+'"'}).value().join(",");
var requireVars = _(defines).values().value().join(",");
var data = {"body":body,injectedFunctions:"",requireNames:requireVars,requirePaths:requirePaths};
data.injectedFunctions = context.injectedFunctions.join("\n");
var code = templateTemplate(data);
try {
var tree = esprima.parse(code, {range: true, tokens: true, comment: true});
tree = escodegen.attachComments(tree, tree.comments, tree.tokens);
code = escodegen.generate(tree,{comment:true});
} catch (e) {
}
return code;
}
function handleSingleFile(filename) {
if (path.extname(filename) !== ".html") {
return;// only handle html files
}
var html = fs.readFileSync(filename).toString();
if (!html.match(/\<\!doctype jsx/)) {
return;
}
var js = convertTemplateToReact(html);
fs.writeFileSync(filename.replace(".html",".js"),js);
}
if (process.argv.length > 2) {
_.forEach(process.argv.slice(2),handleSingleFile);
} else {
console.log("Usage:node reactTemplates.js <filename>");
}