112 lines
2.6 KiB
JavaScript
Executable File
112 lines
2.6 KiB
JavaScript
Executable File
//#! /usr/bin/env nodejs
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// -*- js -*-
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"use strict";
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var UglifyJS = require("../tools/node");
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var sys = require("util");
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var yargs = require("yargs");
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var fs = require("fs");
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var ARGS = yargs
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.usage("$0 input1.js \n")
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.describe("print_ast", "Prints a dot file describing the internal abstract syntax")
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.describe("json_formatting", "Prints the JSON nicelly formatted")
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.describe("skip_minified", "Whether to skip processing minified files")
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.describe("features", "Comma separated list of features: \n" +
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"ASTREL - relations in AST, \n" +
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"FNAMES - function names to internal calls,\n" +
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"FSCOPE - add variable scope constraints.")
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.demand(1)
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.default('features', 'ASTREL,FNAMES,FSCOPE')
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.boolean("print_ast")
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.boolean("skip_minified")
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.boolean("json_formatting")
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.string("features")
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.wrap(80)
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.argv
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;
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normalize(ARGS);
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if (ARGS.h || ARGS.help) {
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sys.puts(yargs.help());
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process.exit(0);
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}
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var files = ARGS._.slice();
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if (files.length > 1) {
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sys.error("WARNING: expected only single input file. Processing file '" + files[0] + "' while the rest is ignored.");
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};
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if (ARGS.features === true) {
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sys.error("ERROR: empty set of features.");
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process.exit(1);
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};
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var features = ARGS.features.split(",");
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for (var i = 0; i < features.length; i++) {
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if (features[i] != "FNAMES" && features[i] != "ASTREL" && features[i] != "FSCOPE") {
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sys.error("WARNING: ignoring not supported feature '" + features[i] + "'.");
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};
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};
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for (var i = 0; i < files.length; i++) {
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processFile(files[i], ARGS.print_ast, ARGS.features, ARGS.json_formatting, ARGS.skip_minified);
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};
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function stripInterpreter(code){
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if (code.slice(0,2) != "#!"){
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return code;
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}
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return code.slice(code.indexOf('\n') + 1);
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}
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function processFile(file, print_ast, features, json_formatting, skip_minified) {
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var code;
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try {
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code = fs.readFileSync(file, "utf-8");
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}
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catch (ex) {
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sys.error("ERROR: can't read file: " + file);
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return;
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}
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//if it is a script, the UglifyJS parser will fail to parse it
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code = stripInterpreter(code);
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var output = UglifyJS.extractFeatures(code, file, print_ast, features, skip_minified);
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if (output == null) {
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return;
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}
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if (!json_formatting) {
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output = removeWhitespace(output);
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}
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//validate JSON
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try {
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JSON.parse(output);
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} catch (e) {
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throw e;
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}
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if (removeWhitespace(output) != '{"query":[],"assign":[]}') {
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console.log(output);
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}
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}
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/* ------------------------ */
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function normalize(o) {
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for (var i in o) if (o.hasOwnProperty(i) && /-/.test(i)) {
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o[i.replace(/-/g, "_")] = o[i];
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delete o[i];
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}
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}
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function removeWhitespace(input){
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return input.replace(/\s/g,"");
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} |