mirrors/pdf.js
1
0
Fork 0
mirror of https://github.com/mozilla/pdf.js.git synced 2025-04-22 16:18:08 +02:00
Code Activity

Moves checkProblematicCharRanges to font_spec.js

Browse source
This commit is contained in:
Yury Delendik 2017-03-01 14:12:22 -06:00
parent 24e5b6ee6c
commit e7cc07cc11
2 changed files with 79 additions and 75 deletions
Download patch file Download diff file Expand all files Collapse all files

73
src/core/fonts.js
View file

@ -505,75 +505,6 @@ var ProblematicCharRanges = new Int32Array([
0xFFF0, 0x10000
]);
if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION')) {
/**
* Used to validate the entries in `ProblematicCharRanges`, and to ensure that
* its total number of characters does not exceed the PUA (Private Use Area)
* length.
* @returns {Object} An object with {number} `numChars`, {number} `puaLength`,
* and {number} `percentage` parameters.
*/
var checkProblematicCharRanges = function checkProblematicCharRanges() {
function printRange(limits) {
return '[' + limits.lower.toString('16').toUpperCase() + ', ' +
limits.upper.toString('16').toUpperCase() + ')';
}
var numRanges = ProblematicCharRanges.length;
if (numRanges % 2 !== 0) {
throw new Error('Char ranges must contain an even number of elements.');
}
var prevLimits, numChars = 0;
for (var i = 0; i < numRanges; i += 2) {
var limits = {
lower: ProblematicCharRanges[i],
upper: ProblematicCharRanges[i + 1],
};
if (!isInt(limits.lower) || !isInt(limits.upper)) {
throw new Error('Range endpoints must be integers: ' +
printRange(limits));
}
if (limits.lower < 0 || limits.upper < 0) {
throw new Error('Range endpoints must be non-negative: ' +
printRange(limits));
}
var range = limits.upper - limits.lower;
if (range < 1) {
throw new Error('Range must contain at least one element: ' +
printRange(limits));
}
if (prevLimits) {
if (limits.lower < prevLimits.lower) {
throw new Error('Ranges must be sorted in ascending order: ' +
printRange(limits) + ', ' + printRange(prevLimits));
}
if (limits.lower < prevLimits.upper) {
throw new Error('Ranges must not overlap: ' +
printRange(limits) + ', ' + printRange(prevLimits));
}
}
prevLimits = {
lower: limits.lower,
upper: limits.upper,
};
// The current range is OK.
numChars += range;
}
var puaLength = (PRIVATE_USE_OFFSET_END + 1) - PRIVATE_USE_OFFSET_START;
if (numChars > puaLength) {
throw new Error('Total number of chars must not exceed the PUA length.');
}
return {
numChars: numChars,
puaLength: puaLength,
percentage: 100 * (numChars / puaLength),
};
};
exports.SEAC_ANALYSIS_ENABLED = SEAC_ANALYSIS_ENABLED;
exports.checkProblematicCharRanges = checkProblematicCharRanges;
}
/**
* 'Font' is the class the outside world should use, it encapsulate all the font
* decoding logics whatever type it is (assuming the font type is supported).
@ -3436,10 +3367,14 @@ var CFFFont = (function CFFFontClosure() {
}
})();
exports.SEAC_ANALYSIS_ENABLED = SEAC_ANALYSIS_ENABLED;
exports.PRIVATE_USE_OFFSET_START = PRIVATE_USE_OFFSET_START;
exports.PRIVATE_USE_OFFSET_END = PRIVATE_USE_OFFSET_END;
exports.ErrorFont = ErrorFont;
exports.Font = Font;
exports.FontFlags = FontFlags;
exports.IdentityToUnicodeMap = IdentityToUnicodeMap;
exports.ProblematicCharRanges = ProblematicCharRanges;
exports.ToUnicodeMap = ToUnicodeMap;
exports.getFontType = getFontType;
}));