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172 lines
4.3 KiB
172 lines
4.3 KiB
var jsencoding = require('../deps/encoding/encoding');
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var RE_ENCODED = /%([a-fA-F0-9]{2})/g;
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function encodedReplacer(match, byte) {
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return String.fromCharCode(parseInt(byte, 16));
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}
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function parseParams(str) {
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var res = [],
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state = 'key',
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charset = '',
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inquote = false,
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escaping = false,
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p = 0,
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tmp = '';
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for (var i = 0, len = str.length; i < len; ++i) {
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if (str[i] === '\\' && inquote) {
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if (escaping)
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escaping = false;
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else {
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escaping = true;
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continue;
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}
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} else if (str[i] === '"') {
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if (!escaping) {
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if (inquote) {
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inquote = false;
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state = 'key';
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} else
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inquote = true;
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continue;
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} else
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escaping = false;
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} else {
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if (escaping && inquote)
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tmp += '\\';
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escaping = false;
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if ((state === 'charset' || state === 'lang') && str[i] === "'") {
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if (state === 'charset') {
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state = 'lang';
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charset = tmp.substring(1);
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} else
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state = 'value';
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tmp = '';
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continue;
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} else if (state === 'key'
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&& (str[i] === '*' || str[i] === '=')
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&& res.length) {
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if (str[i] === '*')
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state = 'charset';
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else
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state = 'value';
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res[p] = [tmp, undefined];
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tmp = '';
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continue;
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} else if (!inquote && str[i] === ';') {
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state = 'key';
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if (charset) {
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if (tmp.length) {
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tmp = decodeText(tmp.replace(RE_ENCODED, encodedReplacer),
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'binary',
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charset);
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}
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charset = '';
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}
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if (res[p] === undefined)
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res[p] = tmp;
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else
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res[p][1] = tmp;
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tmp = '';
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++p;
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continue;
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} else if (!inquote && (str[i] === ' ' || str[i] === '\t'))
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continue;
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}
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tmp += str[i];
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}
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if (charset && tmp.length) {
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tmp = decodeText(tmp.replace(RE_ENCODED, encodedReplacer),
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'binary',
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charset);
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}
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if (res[p] === undefined) {
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if (tmp)
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res[p] = tmp;
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} else
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res[p][1] = tmp;
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return res;
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};
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exports.parseParams = parseParams;
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function decodeText(text, textEncoding, destEncoding) {
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var ret;
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if (text && jsencoding.encodingExists(destEncoding)) {
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try {
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ret = jsencoding.TextDecoder(destEncoding)
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.decode(Buffer.from(text, textEncoding));
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} catch(e) {}
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}
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return (typeof ret === 'string' ? ret : text);
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}
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exports.decodeText = decodeText;
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var HEX = [
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
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0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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], RE_PLUS = /\+/g;
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function Decoder() {
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this.buffer = undefined;
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}
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Decoder.prototype.write = function(str) {
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// Replace '+' with ' ' before decoding
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str = str.replace(RE_PLUS, ' ');
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var res = '';
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var i = 0, p = 0, len = str.length;
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for (; i < len; ++i) {
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if (this.buffer !== undefined) {
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if (!HEX[str.charCodeAt(i)]) {
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res += '%' + this.buffer;
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this.buffer = undefined;
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--i; // retry character
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} else {
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this.buffer += str[i];
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++p;
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if (this.buffer.length === 2) {
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res += String.fromCharCode(parseInt(this.buffer, 16));
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this.buffer = undefined;
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}
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}
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} else if (str[i] === '%') {
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if (i > p) {
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res += str.substring(p, i);
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p = i;
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}
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this.buffer = '';
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++p;
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}
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}
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if (p < len && this.buffer === undefined)
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res += str.substring(p);
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return res;
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};
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Decoder.prototype.reset = function() {
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this.buffer = undefined;
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};
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exports.Decoder = Decoder;
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function basename(path) {
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if (typeof path !== 'string')
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return '';
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for (var i = path.length - 1; i >= 0; --i) {
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switch (path.charCodeAt(i)) {
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case 0x2F: // '/'
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case 0x5C: // '\'
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path = path.slice(i + 1);
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return (path === '..' || path === '.' ? '' : path);
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}
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}
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return (path === '..' || path === '.' ? '' : path);
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}
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exports.basename = basename;
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