246 lines
9.4 KiB
JavaScript
246 lines
9.4 KiB
JavaScript
"use strict";
|
|
|
|
var to_ascii = typeof atob == "undefined" ? function(b64) {
|
|
return new Buffer(b64, "base64").toString();
|
|
} : atob;
|
|
var to_base64 = typeof btoa == "undefined" ? function(str) {
|
|
return new Buffer(str).toString("base64");
|
|
} : btoa;
|
|
|
|
function read_source_map(name, code) {
|
|
var match = /\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(\S+)\s*$/.exec(code);
|
|
if (!match) {
|
|
AST_Node.warn("inline source map not found: " + name);
|
|
return null;
|
|
}
|
|
return to_ascii(match[2]);
|
|
}
|
|
|
|
function parse_source_map(content) {
|
|
try {
|
|
return JSON.parse(content);
|
|
} catch (ex) {
|
|
throw new Error("invalid input source map: " + content);
|
|
}
|
|
}
|
|
|
|
function set_shorthand(name, options, keys) {
|
|
if (options[name]) {
|
|
keys.forEach(function(key) {
|
|
if (options[key]) {
|
|
if (typeof options[key] != "object") options[key] = {};
|
|
if (!(name in options[key])) options[key][name] = options[name];
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
function init_cache(cache) {
|
|
if (!cache) return;
|
|
if (!("props" in cache)) {
|
|
cache.props = new Dictionary();
|
|
} else if (!(cache.props instanceof Dictionary)) {
|
|
cache.props = Dictionary.fromObject(cache.props);
|
|
}
|
|
}
|
|
|
|
function to_json(cache) {
|
|
return {
|
|
props: cache.props.toObject()
|
|
};
|
|
}
|
|
|
|
function minify(files, options) {
|
|
try {
|
|
options = defaults(options, {
|
|
compress: {},
|
|
enclose: false,
|
|
ie8: false,
|
|
keep_fnames: false,
|
|
mangle: {},
|
|
nameCache: null,
|
|
output: {},
|
|
parse: {},
|
|
rename: undefined,
|
|
sourceMap: false,
|
|
timings: false,
|
|
toplevel: false,
|
|
warnings: false,
|
|
wrap: false,
|
|
}, true);
|
|
var timings = options.timings && {
|
|
start: Date.now()
|
|
};
|
|
if (options.rename === undefined) {
|
|
options.rename = options.compress && options.mangle;
|
|
}
|
|
set_shorthand("ie8", options, [ "compress", "mangle", "output" ]);
|
|
set_shorthand("keep_fnames", options, [ "compress", "mangle" ]);
|
|
set_shorthand("toplevel", options, [ "compress", "mangle" ]);
|
|
var quoted_props;
|
|
if (options.mangle) {
|
|
options.mangle = defaults(options.mangle, {
|
|
cache: options.nameCache && (options.nameCache.vars || {}),
|
|
eval: false,
|
|
ie8: false,
|
|
keep_fnames: false,
|
|
properties: false,
|
|
reserved: [],
|
|
toplevel: false,
|
|
}, true);
|
|
if (options.mangle.properties) {
|
|
if (typeof options.mangle.properties != "object") {
|
|
options.mangle.properties = {};
|
|
}
|
|
if (options.mangle.properties.keep_quoted) {
|
|
quoted_props = options.mangle.properties.reserved;
|
|
if (!Array.isArray(quoted_props)) quoted_props = [];
|
|
options.mangle.properties.reserved = quoted_props;
|
|
}
|
|
if (options.nameCache && !("cache" in options.mangle.properties)) {
|
|
options.mangle.properties.cache = options.nameCache.props || {};
|
|
}
|
|
}
|
|
init_cache(options.mangle.cache);
|
|
init_cache(options.mangle.properties.cache);
|
|
}
|
|
if (options.sourceMap) {
|
|
options.sourceMap = defaults(options.sourceMap, {
|
|
content: null,
|
|
filename: null,
|
|
includeSources: false,
|
|
root: null,
|
|
url: null,
|
|
}, true);
|
|
}
|
|
var warnings = [];
|
|
if (options.warnings) AST_Node.log_function(function(warning) {
|
|
warnings.push(warning);
|
|
}, options.warnings == "verbose");
|
|
if (timings) timings.parse = Date.now();
|
|
var source_maps, toplevel;
|
|
if (files instanceof AST_Toplevel) {
|
|
toplevel = files;
|
|
} else {
|
|
if (typeof files == "string") {
|
|
files = [ files ];
|
|
}
|
|
options.parse = options.parse || {};
|
|
options.parse.toplevel = null;
|
|
var source_map_content = options.sourceMap && options.sourceMap.content;
|
|
if (typeof source_map_content == "string" && source_map_content != "inline") {
|
|
source_map_content = parse_source_map(source_map_content);
|
|
}
|
|
source_maps = source_map_content && Object.create(null);
|
|
for (var name in files) if (HOP(files, name)) {
|
|
options.parse.filename = name;
|
|
options.parse.toplevel = parse(files[name], options.parse);
|
|
if (source_maps) {
|
|
if (source_map_content == "inline") {
|
|
var inlined_content = read_source_map(name, files[name]);
|
|
if (inlined_content) {
|
|
source_maps[name] = parse_source_map(inlined_content);
|
|
}
|
|
} else {
|
|
source_maps[name] = source_map_content;
|
|
}
|
|
}
|
|
}
|
|
toplevel = options.parse.toplevel;
|
|
}
|
|
if (quoted_props) {
|
|
reserve_quoted_keys(toplevel, quoted_props);
|
|
}
|
|
[ "enclose", "wrap" ].forEach(function(action) {
|
|
var option = options[action];
|
|
if (!option) return;
|
|
var orig = toplevel.print_to_string().slice(0, -1);
|
|
toplevel = toplevel[action](option);
|
|
files[toplevel.start.file] = toplevel.print_to_string().replace(orig, "");
|
|
});
|
|
if (timings) timings.rename = Date.now();
|
|
if (options.rename) {
|
|
toplevel.figure_out_scope(options.mangle);
|
|
toplevel.expand_names(options.mangle);
|
|
}
|
|
if (timings) timings.compress = Date.now();
|
|
if (options.compress) toplevel = new Compressor(options.compress).compress(toplevel);
|
|
if (timings) timings.scope = Date.now();
|
|
if (options.mangle) toplevel.figure_out_scope(options.mangle);
|
|
if (timings) timings.mangle = Date.now();
|
|
if (options.mangle) {
|
|
toplevel.compute_char_frequency(options.mangle);
|
|
toplevel.mangle_names(options.mangle);
|
|
}
|
|
if (timings) timings.properties = Date.now();
|
|
if (options.mangle && options.mangle.properties) {
|
|
toplevel = mangle_properties(toplevel, options.mangle.properties);
|
|
}
|
|
if (timings) timings.output = Date.now();
|
|
var result = {};
|
|
if (options.output.ast) {
|
|
result.ast = toplevel;
|
|
}
|
|
if (!HOP(options.output, "code") || options.output.code) {
|
|
if (options.sourceMap) {
|
|
options.output.source_map = SourceMap({
|
|
file: options.sourceMap.filename,
|
|
orig: source_maps,
|
|
root: options.sourceMap.root
|
|
});
|
|
if (options.sourceMap.includeSources) {
|
|
if (files instanceof AST_Toplevel) {
|
|
throw new Error("original source content unavailable");
|
|
} else for (var name in files) if (HOP(files, name)) {
|
|
options.output.source_map.get().setSourceContent(name, files[name]);
|
|
}
|
|
} else {
|
|
options.output.source_map.get()._sourcesContents = null;
|
|
}
|
|
}
|
|
delete options.output.ast;
|
|
delete options.output.code;
|
|
var stream = OutputStream(options.output);
|
|
toplevel.print(stream);
|
|
result.code = stream.get();
|
|
if (options.sourceMap) {
|
|
result.map = options.output.source_map.toString();
|
|
var url = options.sourceMap.url;
|
|
if (url) {
|
|
result.code = result.code.replace(/\n\/\/# sourceMappingURL=\S+\s*$/, "");
|
|
if (url == "inline") {
|
|
result.code += "\n//# sourceMappingURL=data:application/json;charset=utf-8;base64," + to_base64(result.map);
|
|
} else {
|
|
result.code += "\n//# sourceMappingURL=" + url;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (options.nameCache && options.mangle) {
|
|
if (options.mangle.cache) options.nameCache.vars = to_json(options.mangle.cache);
|
|
if (options.mangle.properties && options.mangle.properties.cache) {
|
|
options.nameCache.props = to_json(options.mangle.properties.cache);
|
|
}
|
|
}
|
|
if (timings) {
|
|
timings.end = Date.now();
|
|
result.timings = {
|
|
parse: 1e-3 * (timings.rename - timings.parse),
|
|
rename: 1e-3 * (timings.compress - timings.rename),
|
|
compress: 1e-3 * (timings.scope - timings.compress),
|
|
scope: 1e-3 * (timings.mangle - timings.scope),
|
|
mangle: 1e-3 * (timings.properties - timings.mangle),
|
|
properties: 1e-3 * (timings.output - timings.properties),
|
|
output: 1e-3 * (timings.end - timings.output),
|
|
total: 1e-3 * (timings.end - timings.start)
|
|
}
|
|
}
|
|
if (warnings.length) {
|
|
result.warnings = warnings;
|
|
}
|
|
return result;
|
|
} catch (ex) {
|
|
return { error: ex };
|
|
}
|
|
}
|