31e77b975e
Had a few bugs in the initial patch request (#98) as well... Also, fixed the help() command to print to stderr on nonzero exit statuses given.
54 lines
1.7 KiB
JavaScript
Executable File
54 lines
1.7 KiB
JavaScript
Executable File
#!/usr/bin/env node
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var path = require("path");
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var fs = require("fs");
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var acorn = require("../acorn.js");
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var infile, infilecount = 0;
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var options = {}, silent = false, compact = false;
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var parsed;
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function help(status) {
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// we want to print to stderr, not stdout, on errors.
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var print = (status == 0) ? console.out : console.err;
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print("usage: " + path.basename(process.argv[1]) + " [--ecma3|--ecma5] [--strictSemicolons]");
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print(" [--locations] [--compact] [--silent] [--help] [--] infile");
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process.exit(status);
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}
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for (var i = 2; i < process.argv.length; ++i) {
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var arg = process.argv[i];
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if (arg[0] != "-") {
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infile = arg;
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++infilecount;
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continue;
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} else if (arg == "--") {
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if (i < process.argv.length - 2) help(1); // we have too many remaining `infile`s
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infile = process.argv[i + 1]; // we want the *next* argument, not the current one
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++infilecount;
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break;
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}
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else if (arg == "--ecma3") options.ecmaVersion = 3;
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else if (arg == "--ecma5") options.ecmaVersion = 5;
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else if (arg == "--strictSemicolons") options.strictSemicolons = true;
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else if (arg == "--locations") options.locations = true;
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else if (arg == "--silent") silent = true;
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else if (arg == "--compact") compact = true;
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else if (arg == "--help") help(0);
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else help(1); // we already took care of all arguments without a starting dash
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}
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// test against counter: we want exactly 1 file. Any more or less should error.
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if (infilecount !== 1) help(1);
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try {
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var code = fs.readFileSync(infile, "utf8");
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parsed = acorn.parse(code, options);
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} catch(e) {
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console.log(e.message);
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process.exit(1);
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}
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if (!silent)
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console.log(JSON.stringify(parsed, null, compact ? null : 2));
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