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qwen/nodejs/node_modules/istanbul-lib-report/lib/path.js

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+/*
+ Copyright 2012-2015, Yahoo Inc.
+ Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
+ */
+'use strict';
+
+const path = require('path');
+let parsePath = path.parse;
+let SEP = path.sep;
+const origParser = parsePath;
+const origSep = SEP;
+
+function makeRelativeNormalizedPath(str, sep) {
+    const parsed = parsePath(str);
+    let root = parsed.root;
+    let dir;
+    let file = parsed.base;
+    let quoted;
+    let pos;
+
+    // handle a weird windows case separately
+    if (sep === '\\') {
+        pos = root.indexOf(':\\');
+        if (pos >= 0) {
+            root = root.substring(0, pos + 2);
+        }
+    }
+    dir = parsed.dir.substring(root.length);
+
+    if (str === '') {
+        return [];
+    }
+
+    if (sep !== '/') {
+        quoted = new RegExp(sep.replace(/\W/g, '\\$&'), 'g');
+        dir = dir.replace(quoted, '/');
+        file = file.replace(quoted, '/'); // excessively paranoid?
+    }
+
+    if (dir !== '') {
+        dir = `${dir}/${file}`;
+    } else {
+        dir = file;
+    }
+    if (dir.substring(0, 1) === '/') {
+        dir = dir.substring(1);
+    }
+    dir = dir.split(/\/+/);
+    return dir;
+}
+
+class Path {
+    constructor(strOrArray) {
+        if (Array.isArray(strOrArray)) {
+            this.v = strOrArray;
+        } else if (typeof strOrArray === 'string') {
+            this.v = makeRelativeNormalizedPath(strOrArray, SEP);
+        } else {
+            throw new Error(
+                `Invalid Path argument must be string or array:${strOrArray}`
+            );
+        }
+    }
+
+    toString() {
+        return this.v.join('/');
+    }
+
+    hasParent() {
+        return this.v.length > 0;
+    }
+
+    parent() {
+        if (!this.hasParent()) {
+            throw new Error('Unable to get parent for 0 elem path');
+        }
+        const p = this.v.slice();
+        p.pop();
+        return new Path(p);
+    }
+
+    elements() {
+        return this.v.slice();
+    }
+
+    name() {
+        return this.v.slice(-1)[0];
+    }
+
+    contains(other) {
+        let i;
+        if (other.length > this.length) {
+            return false;
+        }
+        for (i = 0; i < other.length; i += 1) {
+            if (this.v[i] !== other.v[i]) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    ancestorOf(other) {
+        return other.contains(this) && other.length !== this.length;
+    }
+
+    descendantOf(other) {
+        return this.contains(other) && other.length !== this.length;
+    }
+
+    commonPrefixPath(other) {
+        const len = this.length > other.length ? other.length : this.length;
+        let i;
+        const ret = [];
+
+        for (i = 0; i < len; i += 1) {
+            if (this.v[i] === other.v[i]) {
+                ret.push(this.v[i]);
+            } else {
+                break;
+            }
+        }
+        return new Path(ret);
+    }
+
+    static compare(a, b) {
+        const al = a.length;
+        const bl = b.length;
+
+        if (al < bl) {
+            return -1;
+        }
+
+        if (al > bl) {
+            return 1;
+        }
+
+        const astr = a.toString();
+        const bstr = b.toString();
+        return astr < bstr ? -1 : astr > bstr ? 1 : 0;
+    }
+}
+
+['push', 'pop', 'shift', 'unshift', 'splice'].forEach(fn => {
+    Object.defineProperty(Path.prototype, fn, {
+        value(...args) {
+            return this.v[fn](...args);
+        }
+    });
+});
+
+Object.defineProperty(Path.prototype, 'length', {
+    enumerable: true,
+    get() {
+        return this.v.length;
+    }
+});
+
+module.exports = Path;
+Path.tester = {
+    setParserAndSep(p, sep) {
+        parsePath = p;
+        SEP = sep;
+    },
+    reset() {
+        parsePath = origParser;
+        SEP = origSep;
+    }
+};