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Diffstat (limited to 'node_modules/decode-uri-component/index.js')
-rw-r--r-- | node_modules/decode-uri-component/index.js | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/node_modules/decode-uri-component/index.js b/node_modules/decode-uri-component/index.js new file mode 100644 index 0000000..691499b --- /dev/null +++ b/node_modules/decode-uri-component/index.js @@ -0,0 +1,94 @@ +'use strict'; +var token = '%[a-f0-9]{2}'; +var singleMatcher = new RegExp(token, 'gi'); +var multiMatcher = new RegExp('(' + token + ')+', 'gi'); + +function decodeComponents(components, split) { + try { + // Try to decode the entire string first + return decodeURIComponent(components.join('')); + } catch (err) { + // Do nothing + } + + if (components.length === 1) { + return components; + } + + split = split || 1; + + // Split the array in 2 parts + var left = components.slice(0, split); + var right = components.slice(split); + + return Array.prototype.concat.call([], decodeComponents(left), decodeComponents(right)); +} + +function decode(input) { + try { + return decodeURIComponent(input); + } catch (err) { + var tokens = input.match(singleMatcher); + + for (var i = 1; i < tokens.length; i++) { + input = decodeComponents(tokens, i).join(''); + + tokens = input.match(singleMatcher); + } + + return input; + } +} + +function customDecodeURIComponent(input) { + // Keep track of all the replacements and prefill the map with the `BOM` + var replaceMap = { + '%FE%FF': '\uFFFD\uFFFD', + '%FF%FE': '\uFFFD\uFFFD' + }; + + var match = multiMatcher.exec(input); + while (match) { + try { + // Decode as big chunks as possible + replaceMap[match[0]] = decodeURIComponent(match[0]); + } catch (err) { + var result = decode(match[0]); + + if (result !== match[0]) { + replaceMap[match[0]] = result; + } + } + + match = multiMatcher.exec(input); + } + + // Add `%C2` at the end of the map to make sure it does not replace the combinator before everything else + replaceMap['%C2'] = '\uFFFD'; + + var entries = Object.keys(replaceMap); + + for (var i = 0; i < entries.length; i++) { + // Replace all decoded components + var key = entries[i]; + input = input.replace(new RegExp(key, 'g'), replaceMap[key]); + } + + return input; +} + +module.exports = function (encodedURI) { + if (typeof encodedURI !== 'string') { + throw new TypeError('Expected `encodedURI` to be of type `string`, got `' + typeof encodedURI + '`'); + } + + try { + encodedURI = encodedURI.replace(/\+/g, ' '); + + // Try the built in decoder first + return decodeURIComponent(encodedURI); + } catch (err) { + // Fallback to a more advanced decoder + return customDecodeURIComponent(encodedURI); + } +}; |