86 lines
2.3 KiB
JavaScript
86 lines
2.3 KiB
JavaScript
// Utility to parse keysymdef.h to produce mappings from Unicode codepoints to keysyms
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"use strict";
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var fs = require('fs');
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var show_help = process.argv.length === 2;
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var filename;
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for (var i = 2; i < process.argv.length; ++i) {
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switch (process.argv[i]) {
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case "--help":
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case "-h":
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show_help = true;
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break;
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case "--file":
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case "-f":
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default:
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filename = process.argv[i];
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}
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}
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if (!filename) {
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show_help = true;
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console.log("Error: No filename specified\n");
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}
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if (show_help) {
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console.log("Parses a *nix keysymdef.h to generate Unicode code point mappings");
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console.log("Usage: node parse.js [options] filename:");
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console.log(" -h [ --help ] Produce this help message");
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console.log(" filename The keysymdef.h file to parse");
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return;
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}
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var buf = fs.readFileSync(filename);
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var str = buf.toString('utf8');
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var re = /^\#define XK_([a-zA-Z_0-9]+)\s+0x([0-9a-fA-F]+)\s*(\/\*\s*(.*)\s*\*\/)?\s*$/m;
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var arr = str.split('\n');
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var codepoints = {};
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for (var i = 0; i < arr.length; ++i) {
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var result = re.exec(arr[i]);
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if (result){
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var keyname = result[1];
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var keysym = parseInt(result[2], 16);
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var remainder = result[3];
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var unicodeRes = /U\+([0-9a-fA-F]+)/.exec(remainder);
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if (unicodeRes) {
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var unicode = parseInt(unicodeRes[1], 16);
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if (!codepoints[unicode]){
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codepoints[unicode] = keysym;
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}
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}
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else {
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console.log("no unicode codepoint found:", arr[i]);
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}
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}
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else {
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console.log("line is not a keysym:", arr[i]);
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}
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}
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var out = "// This file describes mappings from Unicode codepoints to the keysym values\n" +
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"// (and optionally, key names) expected by the RFB protocol\n" +
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"// How this file was generated:\n" +
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"// " + process.argv.join(" ") + "\n" +
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"\n" +
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"var codepoints = {codepoints};\n" +
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"\n" +
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"export default {\n" +
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" lookup : function(u) {\n" +
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" var keysym = codepoints[u];\n" +
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" if (keysym === undefined) {\n" +
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" keysym = 0x01000000 | u;\n" +
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" }\n" +
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" return keysym;\n" +
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" },\n" +
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"};\n";
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out = out.replace('{codepoints}', JSON.stringify(codepoints));
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fs.writeFileSync("keysymdef.js", out);
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