67 lines
2.2 KiB
JavaScript
67 lines
2.2 KiB
JavaScript
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export default function fixCmapTable(arrayBuffer) {
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const font = new DataView(arrayBuffer);
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const tableCount = font.getUint16(4);
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let cmapOffset = 0;
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let cmapLength = 0;
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let cmapCheckSumOffset = 0;
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let cmapCheckSum = 0;
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for (let i = 0; i < tableCount; i++) {
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const tag = font.getUint32(12 + i * 16);
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if (tag === 0x636D6170) {
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cmapCheckSumOffset = 12 + i * 16 + 4;
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cmapCheckSum = font.getUint32(cmapCheckSumOffset);
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cmapOffset = font.getUint32(12 + i * 16 + 8);
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cmapLength = font.getUint32(12 + i * 16 + 12);
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GameGlobal.manager.Logger.pluginLog(`[font]cmapCheckSubOffset [${cmapCheckSumOffset}], cmapCheckSum [${cmapCheckSum}], cmapOffset [${cmapOffset}], cmapLength [${cmapLength}]`);
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}
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}
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if (cmapOffset === 0) {
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GameGlobal.manager.Logger.pluginError('[font]not found cmap');
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return false;
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}
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const cmap = new DataView(arrayBuffer, cmapOffset, cmapLength);
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const numTables = cmap.getUint16(2);
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let subtableOffset = 4;
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let targetSubtableOffset = 0;
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for (let i = 0; i < numTables; i++) {
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const platformId = cmap.getUint16(subtableOffset);
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const encodingId = cmap.getUint16(subtableOffset + 2);
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if (platformId === 0 && encodingId === 5) {
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if (i === (numTables - 1)) {
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targetSubtableOffset = subtableOffset;
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GameGlobal.manager.Logger.pluginLog(`[font]targetSubtableOffset ${targetSubtableOffset}`);
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}
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break;
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}
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subtableOffset += 8;
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}
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if (targetSubtableOffset > 0) {
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const newCmapView = new DataView(arrayBuffer, cmapOffset, cmapLength - 8);
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newCmapView.setUint16(2, numTables - 1);
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let sum = 0;
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const lengthInUint32 = (newCmapView.byteLength + 3) / 4;
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for (let i = 0; i < lengthInUint32; i++) {
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sum += newCmapView.getUint32(i);
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}
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font.setUint32(cmapCheckSumOffset, sum);
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return true;
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}
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GameGlobal.manager.Logger.pluginLog('[font]not found cmap subtable');
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return false;
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}
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