flectra/addons/web/static/lib/pdfjs/external/cmapscompress/parse.js
2018-01-16 02:34:37 -08:00

101 lines
3.2 KiB
JavaScript

/* Copyright 2014 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
exports.parseAdobeCMap = function (content) {
var m = /(\bbegincmap\b[\s\S]*?)\bendcmap\b/.exec(content);
if (!m) {
throw new Error('cmap was not found');
}
var body = m[1].replace(/\r\n?/g, '\n');
var result = {
type: 1,
wmode: 0,
comment: 'Copyright 1990-2009 Adobe Systems Incorporated.\nAll rights reserved.\nSee ./LICENSE',
usecmap: null,
body: []
};
m = /\/CMapType\s+(\d+)+\s+def\b/.exec(body);
result.type = +m[1];
m = /\/WMode\s+(\d+)+\s+def\b/.exec(body);
result.wmode = +m[1];
m = /\/([\w\-]+)\s+usecmap\b/.exec(body);
if (m) {
result.usecmap = m[1];
}
var re = /(\d+)\s+(begincodespacerange|beginnotdefrange|begincidchar|begincidrange|beginbfchar|beginbfrange)\n([\s\S]*?)\n(endcodespacerange|endnotdefrange|endcidchar|endcidrange|endbfchar|endbfrange)/g;
while (m = re.exec(body)) {
var lines = m[3].toLowerCase().split('\n');
var m2;
switch (m[2]) {
case 'begincodespacerange':
result.body.push({
type: 0,
items: lines.map(function (line) {
var m = /<(\w+)>\s+<(\w+)>/.exec(line);
return {start: m[1], end: m[2]};
})
});
break;
case 'beginnotdefrange':
result.body.push({
type: 1,
items: lines.map(function (line) {
var m = /<(\w+)>\s+<(\w+)>\s+(\d+)/.exec(line);
return {start: m[1], end: m[2], code: +m[3]};
})
});
break;
case 'begincidchar':
result.body.push({
type: 2,
items: lines.map(function (line) {
var m = /<(\w+)>\s+(\d+)/.exec(line);
return {char: m[1], code: +m[2]};
})
});
break;
case 'begincidrange':
result.body.push({
type: 3,
items: lines.map(function (line) {
var m = /<(\w+)>\s+<(\w+)>\s+(\d+)/.exec(line);
return {start: m[1], end: m[2], code: +m[3]};
})
});
break;
case 'beginbfchar':
result.body.push({
type: 4,
items: lines.map(function (line) {
var m = /<(\w+)>\s+<(\w+)>/.exec(line);
return {char: m[1], code: m[2]};
})
});
break;
case 'beginbfrange':
result.body.push({
type: 5,
items: lines.map(function (line) {
var m = /<(\w+)>\s+<(\w+)>\s+<(\w+)>/.exec(line);
return {start: m[1], end: m[2], code: m[3]};
})
});
break;
}
}
return result;
};