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'use strict';
const { parseSvg } = require('./parser.js');
const { stringifySvg } = require('./stringifier.js');
const { builtin } = require('./builtin.js');
const { invokePlugins } = require('./svgo/plugins.js');
const { encodeSVGDatauri } = require('./svgo/tools.js');
const pluginsMap = {};
for (const plugin of builtin) {
pluginsMap[plugin.name] = plugin;
}
const resolvePluginConfig = (plugin) => {
if (typeof plugin === 'string') {
// resolve builtin plugin specified as string
const builtinPlugin = pluginsMap[plugin];
if (builtinPlugin == null) {
throw Error(`Unknown builtin plugin "${plugin}" specified.`);
}
return {
name: plugin,
params: {},
fn: builtinPlugin.fn,
};
}
if (typeof plugin === 'object' && plugin != null) {
if (plugin.name == null) {
throw Error(`Plugin name should be specified`);
}
// use custom plugin implementation
let fn = plugin.fn;
if (fn == null) {
// resolve builtin plugin implementation
const builtinPlugin = pluginsMap[plugin.name];
if (builtinPlugin == null) {
throw Error(`Unknown builtin plugin "${plugin.name}" specified.`);
}
fn = builtinPlugin.fn;
}
return {
name: plugin.name,
params: plugin.params,
fn,
};
}
return null;
};
const optimize = (input, config) => {
if (config == null) {
config = {};
}
if (typeof config !== 'object') {
throw Error('Config should be an object');
}
const maxPassCount = config.multipass ? 10 : 1;
let prevResultSize = Number.POSITIVE_INFINITY;
let output = '';
const info = {};
if (config.path != null) {
info.path = config.path;
}
for (let i = 0; i < maxPassCount; i += 1) {
info.multipassCount = i;
const ast = parseSvg(input, config.path);
const plugins = config.plugins || ['preset-default'];
if (Array.isArray(plugins) === false) {
throw Error(
"Invalid plugins list. Provided 'plugins' in config should be an array."
);
}
const resolvedPlugins = plugins.map(resolvePluginConfig);
const globalOverrides = {};
if (config.floatPrecision != null) {
globalOverrides.floatPrecision = config.floatPrecision;
}
invokePlugins(ast, info, resolvedPlugins, null, globalOverrides);
output = stringifySvg(ast, config.js2svg);
if (output.length < prevResultSize) {
input = output;
prevResultSize = output.length;
} else {
break;
}
}
if (config.datauri) {
output = encodeSVGDatauri(output, config.datauri);
}
return {
data: output,
};
};
exports.optimize = optimize;
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