forked from enviPath/enviPy
64 lines
2.9 KiB
JavaScript
64 lines
2.9 KiB
JavaScript
/*
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** browserify-replace -- Browserify Transform for Replacing Strings
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** Copyright (c) 2015 Ralf S. Engelschall <rse@engelschall.com>
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**
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** Permission is hereby granted, free of charge, to any person obtaining
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** a copy of this software and associated documentation files (the
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** "Software"), to deal in the Software without restriction, including
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** without limitation the rights to use, copy, modify, merge, publish,
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** distribute, sublicense, and/or sell copies of the Software, and to
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** permit persons to whom the Software is furnished to do so, subject to
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** the following conditions:
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**
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** The above copyright notice and this permission notice shall be included
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** in all copies or substantial portions of the Software.
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**
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** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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** SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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var through = require("through2");
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/* export a Browserify plugin */
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module.exports = function (file, opts) {
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/* sanity check configuration */
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if (!opts.replace)
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throw new Error("no configuration entry \"replace\" found");
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if (!(typeof opts.replace === "object" && opts.replace instanceof Array))
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opts.replace = [ opts.replace ];
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for (var i = 0; i < opts.replace.length; i++) {
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if (typeof opts.replace[i] === "string")
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opts.replace[i] = JSON.parse(opts.replace[i])
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else if (typeof opts.replace[i] !== "object")
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throw new Error("configuration entry \"replace[" + i + "]\" neither JSON stringified object nor object");
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if (typeof opts.replace[i].from === "undefined")
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throw new Error("configuration entry \"replace[" + i + "].from\" not defined");
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if (!(typeof opts.replace[i].from === "object" && opts.replace[i].from instanceof RegExp))
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opts.replace[i].from = new RegExp(opts.replace[i].from);
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if (typeof opts.replace[i].to === "undefined")
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throw new Error("configuration entry \"replace[" + i + "].to\" not defined");
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if (!(typeof opts.replace[i].to === "string"))
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opts.replace[i].to = String(opts.replace[i].to);
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}
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/* provide stream */
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var code = "";
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return through.obj(function (buf, enc, next) {
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/* accumulate the code chunks */
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code += buf.toString("utf8");
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next();
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}, function (next) {
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/* transform the code */
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for (var i = 0; i < opts.replace.length; i++)
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code = code.replace(opts.replace[i].from, opts.replace[i].to)
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this.push(new Buffer(code))
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next();
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});
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};
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