Robin E. R. Davies
81 lines
2.5 KiB
TypeScript
81 lines
2.5 KiB
TypeScript
/*
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* Copyright (c) 2025 Robin E. R. Davies
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* All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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export function pathExtension(path: string) {
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let dotPos = path.lastIndexOf('.');
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if (dotPos === -1) return "";
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let slashPos = path.lastIndexOf('/');
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if (slashPos !== -1) {
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if (dotPos <= slashPos + 1) return "";
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}
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return path.substring(dotPos); // include the '.'.
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}
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export function pathParentDirectory(path: string) {
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let npos = path.lastIndexOf('/');
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if (npos === -1) return "";
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return path.substring(0, npos);
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}
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export function pathConcat(left: string, right: string) {
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if (left === "") return right;
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if (right === "") return left;
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if (left.endsWith('/')) {
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left = left.substring(0, left.length - 1);
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}
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if (right.startsWith("/")) {
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right = right.substring(1);
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}
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return left + "/" + right;
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}
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export function pathFileNameOnly(path: string): string {
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if (path === "..") return path;
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let slashPos = path.lastIndexOf('/');
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if (slashPos < 0) {
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slashPos = 0;
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} else {
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++slashPos;
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}
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let extPos = path.lastIndexOf('.');
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if (extPos < 0 || extPos < slashPos) {
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extPos = path.length;
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}
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return path.substring(slashPos, extPos);
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}
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export function pathFileName(path: string): string {
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if (path === "..") return path;
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let slashPos = path.lastIndexOf('/');
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if (slashPos < 0) {
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slashPos = 0;
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} else {
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++slashPos;
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}
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return path.substring(slashPos);
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}
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