cb297e15c4
In short: - cvmts is now bundled/built via parcel and inside of a npm/yarn workspace with multiple nodejs projects - cvmts now uses the crusttest QEMU management and RFB library (or a fork, if you so prefer). - cvmts does NOT use node-canvas anymore, instead we opt for the same route crusttest took and just encode jpegs ourselves from the RFB provoded framebuffer via jpeg-turbo. this means funnily enough sharp is back for more for thumbnails, but actually seems to WORK this time - IPData is now managed in a very similar way to the original cvm 1.2 implementation where a central manager and reference count exist. tbh it wouldn't be that hard to implement multinode either, but for now, I'm not going to take much time on doing that. this refactor is still incomplete. please do not treat it as generally available while it's not on the default branch. if you want to use it (and report bugs or send fixes) feel free to, but while it may "just work" in certain situations it may be very broken in others. (yes, I know windows support is partially totaled by this; it's something that can and will be fixed)
78 lines
2.7 KiB
TypeScript
78 lines
2.7 KiB
TypeScript
import { StringLike } from './StringLike';
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function isalpha(char: number) {
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return RegExp(/^\p{L}/, 'u').test(String.fromCharCode(char));
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}
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/// A simple function for formatting strings in a more expressive manner.
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/// While JavaScript *does* have string interpolation, it's not a total replacement
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/// for just formatting strings, and a method like this is better for data independent formatting.
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///
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/// ## Example usage
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///
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/// ```typescript
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/// let hello = Format("Hello, {0}!", "World");
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/// ```
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export function Format(pattern: string, ...args: Array<StringLike>) {
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let argumentsAsStrings: Array<string> = [...args].map((el) => {
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// This catches cases where the thing already is a string
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if (typeof el == 'string') return el as string;
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return el.toString();
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});
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let pat = pattern;
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// Handle pattern ("{0} {1} {2} {3} {4} {5}") syntax if found
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for (let i = 0; i < pat.length; ++i) {
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if (pat[i] == '{') {
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let replacementStart = i;
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let foundSpecifierEnd = false;
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// Make sure the specifier is not cut off (the last character of the string)
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if (i + 3 > pat.length) {
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throw new Error(`Error in format pattern "${pat}": Cutoff/invalid format specifier`);
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}
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// Try and find the specifier end ('}').
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// Whitespace and a '{' are considered errors.
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for (let j = i + 1; j < pat.length; ++j) {
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switch (pat[j]) {
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case '}':
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foundSpecifierEnd = true;
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i = j;
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break;
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case '{':
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throw new Error(`Error in format pattern "${pat}": Cannot start a format specifier in an existing replacement`);
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case ' ':
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throw new Error(`Error in format pattern "${pat}": Whitespace inside format specifier`);
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case '-':
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throw new Error(`Error in format pattern "${pat}": Malformed format specifier`);
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default:
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if (isalpha(pat.charCodeAt(j))) throw new Error(`Error in format pattern "${pat}": Malformed format specifier`);
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break;
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}
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if (foundSpecifierEnd) break;
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}
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if (!foundSpecifierEnd) throw new Error(`Error in format pattern "${pat}": No terminating "}" character found`);
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// Get the beginning and trailer
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let beginning = pat.substring(0, replacementStart);
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let trailer = pat.substring(replacementStart + 3);
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let argumentIndex = parseInt(pat.substring(replacementStart + 1, i));
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if (Number.isNaN(argumentIndex) || argumentIndex > argumentsAsStrings.length) throw new Error(`Error in format pattern "${pat}": Argument index out of bounds`);
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// This is seriously the only decent way to do this in javascript
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// thanks brendan eich (replace this thanking with more choice words in your head)
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pat = beginning + argumentsAsStrings[argumentIndex] + trailer;
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}
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}
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return pat;
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}
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