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Load built-in CMap files using the Fetch API when possible

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This commit is contained in:
Jonas Jenwald 2019-02-24 15:22:25 +01:00
parent df7756d2a4
commit cbc07f985b
3 changed files with 75 additions and 40 deletions
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29
test/unit/test_utils.js
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@ -99,32 +99,31 @@ class NodeCMapReaderFactory {
this.isCompressed = isCompressed;
}
fetch({ name, }) {
async fetch({ name, }) {
if (!this.baseUrl) {
return Promise.reject(new Error(
throw new Error(
'The CMap "baseUrl" parameter must be specified, ensure that ' +
'the "cMapUrl" and "cMapPacked" API parameters are provided.'));
'the "cMapUrl" and "cMapPacked" API parameters are provided.');
}
if (!name) {
return Promise.reject(new Error('CMap name must be specified.'));
throw new Error('CMap name must be specified.');
}
return new Promise((resolve, reject) => {
let url = this.baseUrl + name + (this.isCompressed ? '.bcmap' : '');
const url = this.baseUrl + name + (this.isCompressed ? '.bcmap' : '');
const compressionType = (this.isCompressed ? CMapCompressionType.BINARY :
CMapCompressionType.NONE);
let fs = require('fs');
return new Promise((resolve, reject) => {
const fs = require('fs');
fs.readFile(url, (error, data) => {
if (error || !data) {
reject(new Error('Unable to load ' +
(this.isCompressed ? 'binary ' : '') +
'CMap at: ' + url));
reject(new Error(error));
return;
}
resolve({
cMapData: new Uint8Array(data),
compressionType: this.isCompressed ?
CMapCompressionType.BINARY : CMapCompressionType.NONE,
});
resolve({ cMapData: new Uint8Array(data), compressionType, });
});
}).catch((reason) => {
throw new Error(`Unable to load ${this.isCompressed ? 'binary ' : ''}` +
`CMap at: ${url}`);
});
}
}