diff options
Diffstat (limited to 'node_modules/clean-css/lib/reader/apply-source-maps.js')
| -rw-r--r-- | node_modules/clean-css/lib/reader/apply-source-maps.js | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/node_modules/clean-css/lib/reader/apply-source-maps.js b/node_modules/clean-css/lib/reader/apply-source-maps.js deleted file mode 100644 index 7c5a9282b..000000000 --- a/node_modules/clean-css/lib/reader/apply-source-maps.js +++ /dev/null @@ -1,245 +0,0 @@ -var fs = require('fs'); -var path = require('path'); - -var isAllowedResource = require('./is-allowed-resource'); -var matchDataUri = require('./match-data-uri'); -var rebaseLocalMap = require('./rebase-local-map'); -var rebaseRemoteMap = require('./rebase-remote-map'); - -var Token = require('../tokenizer/token'); -var hasProtocol = require('../utils/has-protocol'); -var isDataUriResource = require('../utils/is-data-uri-resource'); -var isRemoteResource = require('../utils/is-remote-resource'); - -var MAP_MARKER_PATTERN = /^\/\*# sourceMappingURL=(\S+) \*\/$/; - -function applySourceMaps(tokens, context, callback) { - var applyContext = { - callback: callback, - fetch: context.options.fetch, - index: 0, - inline: context.options.inline, - inlineRequest: context.options.inlineRequest, - inlineTimeout: context.options.inlineTimeout, - inputSourceMapTracker: context.inputSourceMapTracker, - localOnly: context.localOnly, - processedTokens: [], - rebaseTo: context.options.rebaseTo, - sourceTokens: tokens, - warnings: context.warnings - }; - - return context.options.sourceMap && tokens.length > 0 ? - doApplySourceMaps(applyContext) : - callback(tokens); -} - -function doApplySourceMaps(applyContext) { - var singleSourceTokens = []; - var lastSource = findTokenSource(applyContext.sourceTokens[0]); - var source; - var token; - var l; - - for (l = applyContext.sourceTokens.length; applyContext.index < l; applyContext.index++) { - token = applyContext.sourceTokens[applyContext.index]; - source = findTokenSource(token); - - if (source != lastSource) { - singleSourceTokens = []; - lastSource = source; - } - - singleSourceTokens.push(token); - applyContext.processedTokens.push(token); - - if (token[0] == Token.COMMENT && MAP_MARKER_PATTERN.test(token[1])) { - return fetchAndApplySourceMap(token[1], source, singleSourceTokens, applyContext); - } - } - - return applyContext.callback(applyContext.processedTokens); -} - -function findTokenSource(token) { - var scope; - var metadata; - - if (token[0] == Token.AT_RULE || token[0] == Token.COMMENT) { - metadata = token[2][0]; - } else { - scope = token[1][0]; - metadata = scope[2][0]; - } - - return metadata[2]; -} - -function fetchAndApplySourceMap(sourceMapComment, source, singleSourceTokens, applyContext) { - return extractInputSourceMapFrom(sourceMapComment, applyContext, function (inputSourceMap) { - if (inputSourceMap) { - applyContext.inputSourceMapTracker.track(source, inputSourceMap); - applySourceMapRecursively(singleSourceTokens, applyContext.inputSourceMapTracker); - } - - applyContext.index++; - return doApplySourceMaps(applyContext); - }); -} - -function extractInputSourceMapFrom(sourceMapComment, applyContext, whenSourceMapReady) { - var uri = MAP_MARKER_PATTERN.exec(sourceMapComment)[1]; - var absoluteUri; - var sourceMap; - var rebasedMap; - - if (isDataUriResource(uri)) { - sourceMap = extractInputSourceMapFromDataUri(uri); - return whenSourceMapReady(sourceMap); - } else if (isRemoteResource(uri)) { - return loadInputSourceMapFromRemoteUri(uri, applyContext, function (sourceMap) { - var parsedMap; - - if (sourceMap) { - parsedMap = JSON.parse(sourceMap); - rebasedMap = rebaseRemoteMap(parsedMap, uri); - whenSourceMapReady(rebasedMap); - } else { - whenSourceMapReady(null); - } - }); - } else { - // at this point `uri` is already rebased, see lib/reader/rebase.js#rebaseSourceMapComment - // it is rebased to be consistent with rebasing other URIs - // however here we need to resolve it back to read it from disk - absoluteUri = path.resolve(applyContext.rebaseTo, uri); - sourceMap = loadInputSourceMapFromLocalUri(absoluteUri, applyContext); - - if (sourceMap) { - rebasedMap = rebaseLocalMap(sourceMap, absoluteUri, applyContext.rebaseTo); - return whenSourceMapReady(rebasedMap); - } else { - return whenSourceMapReady(null); - } - } -} - -function extractInputSourceMapFromDataUri(uri) { - var dataUriMatch = matchDataUri(uri); - var charset = dataUriMatch[2] ? dataUriMatch[2].split(/[=;]/)[2] : 'us-ascii'; - var encoding = dataUriMatch[3] ? dataUriMatch[3].split(';')[1] : 'utf8'; - var data = encoding == 'utf8' ? global.unescape(dataUriMatch[4]) : dataUriMatch[4]; - - var buffer = new Buffer(data, encoding); - buffer.charset = charset; - - return JSON.parse(buffer.toString()); -} - -function loadInputSourceMapFromRemoteUri(uri, applyContext, whenLoaded) { - var isAllowed = isAllowedResource(uri, true, applyContext.inline); - var isRuntimeResource = !hasProtocol(uri); - - if (applyContext.localOnly) { - applyContext.warnings.push('Cannot fetch remote resource from "' + uri + '" as no callback given.'); - return whenLoaded(null); - } else if (isRuntimeResource) { - applyContext.warnings.push('Cannot fetch "' + uri + '" as no protocol given.'); - return whenLoaded(null); - } else if (!isAllowed) { - applyContext.warnings.push('Cannot fetch "' + uri + '" as resource is not allowed.'); - return whenLoaded(null); - } - - applyContext.fetch(uri, applyContext.inlineRequest, applyContext.inlineTimeout, function (error, body) { - if (error) { - applyContext.warnings.push('Missing source map at "' + uri + '" - ' + error); - return whenLoaded(null); - } - - whenLoaded(body); - }); -} - -function loadInputSourceMapFromLocalUri(uri, applyContext) { - var isAllowed = isAllowedResource(uri, false, applyContext.inline); - var sourceMap; - - if (!fs.existsSync(uri) || !fs.statSync(uri).isFile()) { - applyContext.warnings.push('Ignoring local source map at "' + uri + '" as resource is missing.'); - return null; - } else if (!isAllowed) { - applyContext.warnings.push('Cannot fetch "' + uri + '" as resource is not allowed.'); - return null; - } - - sourceMap = fs.readFileSync(uri, 'utf-8'); - return JSON.parse(sourceMap); -} - -function applySourceMapRecursively(tokens, inputSourceMapTracker) { - var token; - var i, l; - - for (i = 0, l = tokens.length; i < l; i++) { - token = tokens[i]; - - switch (token[0]) { - case Token.AT_RULE: - applySourceMapTo(token, inputSourceMapTracker); - break; - case Token.AT_RULE_BLOCK: - applySourceMapRecursively(token[1], inputSourceMapTracker); - applySourceMapRecursively(token[2], inputSourceMapTracker); - break; - case Token.AT_RULE_BLOCK_SCOPE: - applySourceMapTo(token, inputSourceMapTracker); - break; - case Token.NESTED_BLOCK: - applySourceMapRecursively(token[1], inputSourceMapTracker); - applySourceMapRecursively(token[2], inputSourceMapTracker); - break; - case Token.NESTED_BLOCK_SCOPE: - applySourceMapTo(token, inputSourceMapTracker); - break; - case Token.COMMENT: - applySourceMapTo(token, inputSourceMapTracker); - break; - case Token.PROPERTY: - applySourceMapRecursively(token, inputSourceMapTracker); - break; - case Token.PROPERTY_BLOCK: - applySourceMapRecursively(token[1], inputSourceMapTracker); - break; - case Token.PROPERTY_NAME: - applySourceMapTo(token, inputSourceMapTracker); - break; - case Token.PROPERTY_VALUE: - applySourceMapTo(token, inputSourceMapTracker); - break; - case Token.RULE: - applySourceMapRecursively(token[1], inputSourceMapTracker); - applySourceMapRecursively(token[2], inputSourceMapTracker); - break; - case Token.RULE_SCOPE: - applySourceMapTo(token, inputSourceMapTracker); - } - } - - return tokens; -} - -function applySourceMapTo(token, inputSourceMapTracker) { - var value = token[1]; - var metadata = token[2]; - var newMetadata = []; - var i, l; - - for (i = 0, l = metadata.length; i < l; i++) { - newMetadata.push(inputSourceMapTracker.originalPositionFor(metadata[i], value.length)); - } - - token[2] = newMetadata; -} - -module.exports = applySourceMaps; |