Function parseCoverageTable

libraries/p5.js:4671–4691

(data, start)

// Format 1 is a simple list of glyph ids,
// Format 2 is a list of ranges. It is expanded in a list of glyphs, maybe not the best idea.
function parseCoverageTable(data, start) {
    var p = new parse.Parser(data, start);
    var format = p.parseUShort();
    var count =  p.parseUShort();
    if (format === 1) {
        return p.parseUShortList(count);
    }
    else if (format === 2) {
        var coverage = [];
        for (; count--;) {
            var begin = p.parseUShort();
            var end = p.parseUShort();
            var index = p.parseUShort();
            for (var i = begin; i <= end; i++) {
                coverage[index++] = i;
            }
        }

        return coverage;
    }
}

// Parse a Class Definition Table in a GSUB, GPOS or GDEF table.
// Returns a function that gets a class value from a glyph ID.