130 lines
3.8 KiB
JavaScript
130 lines
3.8 KiB
JavaScript
var fs = require('fs');
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var path = require('path');
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var isAllowedResource = require('./is-allowed-resource');
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var hasProtocol = require('../utils/has-protocol');
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var isRemoteResource = require('../utils/is-remote-resource');
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function loadOriginalSources(context, callback) {
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var loadContext = {
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callback: callback,
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fetch: context.options.fetch,
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index: 0,
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inline: context.options.inline,
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inlineRequest: context.options.inlineRequest,
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inlineTimeout: context.options.inlineTimeout,
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localOnly: context.localOnly,
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rebaseTo: context.options.rebaseTo,
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sourcesContent: context.sourcesContent,
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uriToSource: uriToSourceMapping(context.inputSourceMapTracker.all()),
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warnings: context.warnings
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};
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return context.options.sourceMap && context.options.sourceMapInlineSources
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? doLoadOriginalSources(loadContext)
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: callback();
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}
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function uriToSourceMapping(allSourceMapConsumers) {
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var mapping = {};
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var consumer;
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var uri;
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var source;
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var i, l;
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for (source in allSourceMapConsumers) {
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consumer = allSourceMapConsumers[source];
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for (i = 0, l = consumer.sources.length; i < l; i++) {
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uri = consumer.sources[i];
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source = consumer.sourceContentFor(uri, true);
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mapping[uri] = source;
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}
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}
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return mapping;
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}
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function doLoadOriginalSources(loadContext) {
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var uris = Object.keys(loadContext.uriToSource);
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var uri;
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var source;
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var total;
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for (total = uris.length; loadContext.index < total; loadContext.index++) {
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uri = uris[loadContext.index];
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source = loadContext.uriToSource[uri];
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if (source) {
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loadContext.sourcesContent[uri] = source;
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} else {
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return loadOriginalSource(uri, loadContext);
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}
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}
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return loadContext.callback();
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}
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function loadOriginalSource(uri, loadContext) {
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var content;
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if (isRemoteResource(uri)) {
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return loadOriginalSourceFromRemoteUri(uri, loadContext, function(content) {
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loadContext.index++;
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loadContext.sourcesContent[uri] = content;
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return doLoadOriginalSources(loadContext);
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});
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}
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content = loadOriginalSourceFromLocalUri(uri, loadContext);
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loadContext.index++;
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loadContext.sourcesContent[uri] = content;
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return doLoadOriginalSources(loadContext);
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}
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function loadOriginalSourceFromRemoteUri(uri, loadContext, whenLoaded) {
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var isAllowed = isAllowedResource(uri, true, loadContext.inline);
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var isRuntimeResource = !hasProtocol(uri);
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if (loadContext.localOnly) {
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loadContext.warnings.push('Cannot fetch remote resource from "' + uri + '" as no callback given.');
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return whenLoaded(null);
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} if (isRuntimeResource) {
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loadContext.warnings.push('Cannot fetch "' + uri + '" as no protocol given.');
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return whenLoaded(null);
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} if (!isAllowed) {
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loadContext.warnings.push('Cannot fetch "' + uri + '" as resource is not allowed.');
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return whenLoaded(null);
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}
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loadContext.fetch(uri, loadContext.inlineRequest, loadContext.inlineTimeout, function(error, content) {
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if (error) {
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loadContext.warnings.push('Missing original source at "' + uri + '" - ' + error);
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}
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whenLoaded(content);
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});
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}
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function loadOriginalSourceFromLocalUri(relativeUri, loadContext) {
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var isAllowed = isAllowedResource(relativeUri, false, loadContext.inline);
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var absoluteUri = path.resolve(loadContext.rebaseTo, relativeUri);
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if (!fs.existsSync(absoluteUri) || !fs.statSync(absoluteUri).isFile()) {
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loadContext.warnings.push('Ignoring local source map at "' + absoluteUri + '" as resource is missing.');
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return null;
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} if (!isAllowed) {
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loadContext.warnings.push('Cannot fetch "' + absoluteUri + '" as resource is not allowed.');
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return null;
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}
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var result = fs.readFileSync(absoluteUri, 'utf8');
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if (result.charCodeAt(0) === 65279) {
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result = result.substring(1);
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}
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return result;
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}
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module.exports = loadOriginalSources;
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