65 lines
1.9 KiB
TypeScript
65 lines
1.9 KiB
TypeScript
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// Convert a JavaScript string to UTF-16 encoding
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function toUTF16(codePoint: number): string {
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if (codePoint <= 0xffff) {
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// BMP character
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return "\\u" + codePoint.toString(16).padStart(4, "0");
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} else {
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// Non-BMP character
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codePoint -= 0x10000;
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let highSurrogate = (codePoint >> 10) + 0xd800;
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let lowSurrogate = (codePoint % 0x400) + 0xdc00;
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return (
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"\\u" +
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highSurrogate.toString(16).padStart(4, "0") +
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"\\u" +
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lowSurrogate.toString(16).padStart(4, "0")
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);
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}
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}
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// Escapes special characters for use in a .properties file
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export function escapeStringForPropertiesFile(str: string): string {
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let escapedStr = "";
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for (const char of [...str]) {
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const codePoint = char.codePointAt(0);
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if (!codePoint) continue;
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switch (char) {
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case "\n":
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escapedStr += "\\n";
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break;
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case "\r":
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escapedStr += "\\r";
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break;
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case "\t":
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escapedStr += "\\t";
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break;
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case "\\":
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escapedStr += "\\\\";
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break;
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case ":":
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escapedStr += "\\:";
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break;
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case "=":
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escapedStr += "\\=";
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break;
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case "#":
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escapedStr += "\\#";
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break;
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case "!":
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escapedStr += "\\!";
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break;
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case "'":
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escapedStr += "''";
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break;
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default:
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if (codePoint > 0x7f) {
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escapedStr += toUTF16(codePoint); // Non-ASCII characters
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} else {
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escapedStr += char; // ASCII character needs no escape
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}
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}
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}
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return escapedStr;
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}
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