Stéphan Kochen
71 lines
1.7 KiB
TypeScript
71 lines
1.7 KiB
TypeScript
export const json = JSON.stringify;
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/**
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* Capitalize the first character.
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*/
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export const ucfirst = (value: string) =>
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value.slice(0, 1).toUpperCase() + value.slice(1);
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/**
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* Convert to a camel-case starting with uppercase.
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*
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* Example: `one two three` => `OneTwoThree`
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*/
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export const upperCamelize = (name: string) =>
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name
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.split(/[^a-zA-Z0-9]+/g)
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.filter((x) => x)
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.map((v) => ucfirst(v))
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.join("");
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/**
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* Add a prefix to every line in some text.
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*/
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export const indent = (
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prefix: string,
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text: string,
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includeEmptyLines = false
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): string =>
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text
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.split("\n")
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.map((line: string) => (line || includeEmptyLines ? prefix + line : line))
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.join("\n");
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/**
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* Basic templating rendering.
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*
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* String values in `vars` will be used for simple substitution
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* of `@@KEY@@`, while boolean values will be used for
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* conditional sections of code between `#@@ IF KEY` and `#@@
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* ENDIF KEY`.
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*/
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export const renderTmpl = (
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tmpl: string,
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vars: { [name: string]: string | boolean }
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): string => {
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let result = tmpl;
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for (const [name, value] of Object.entries(vars)) {
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if (typeof value === "string") {
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result = result.replace(new RegExp(`@@${name}@@`, "g"), value);
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}
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if (typeof value === "boolean") {
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while (true) {
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const lines = result.split("\n");
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const startIdx = lines.indexOf(`#@@ IF ${name}`);
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const endIdx = lines.indexOf(`#@@ ENDIF ${name}`);
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if (startIdx === -1 || endIdx < startIdx) {
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break;
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}
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if (value) {
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lines.splice(endIdx, 1);
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lines.splice(startIdx, 1);
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} else {
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lines.splice(startIdx, endIdx - startIdx + 1);
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}
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result = lines.join("\n");
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}
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}
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}
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return result;
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};
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