feat: init

node_modules/@tybys/wasm-util/lib/mjs/wasi/path.mjs

@@ -0,0 +1,168 @@
+import { validateString } from "./util.mjs";
+const CHAR_DOT = 46; /* . */
+const CHAR_FORWARD_SLASH = 47; /* / */
+function isPosixPathSeparator(code) {
+    return code === CHAR_FORWARD_SLASH;
+}
+function normalizeString(path, allowAboveRoot, separator, isPathSeparator) {
+    let res = '';
+    let lastSegmentLength = 0;
+    let lastSlash = -1;
+    let dots = 0;
+    let code = 0;
+    for (let i = 0; i <= path.length; ++i) {
+        if (i < path.length) {
+            code = path.charCodeAt(i);
+        }
+        else if (isPathSeparator(code)) {
+            break;
+        }
+        else {
+            code = CHAR_FORWARD_SLASH;
+        }
+        if (isPathSeparator(code)) {
+            if (lastSlash === i - 1 || dots === 1) {
+                // NOOP
+            }
+            else if (dots === 2) {
+                if (res.length < 2 || lastSegmentLength !== 2 ||
+                    res.charCodeAt(res.length - 1) !== CHAR_DOT ||
+                    res.charCodeAt(res.length - 2) !== CHAR_DOT) {
+                    if (res.length > 2) {
+                        const lastSlashIndex = res.indexOf(separator);
+                        if (lastSlashIndex === -1) {
+                            res = '';
+                            lastSegmentLength = 0;
+                        }
+                        else {
+                            res = res.slice(0, lastSlashIndex);
+                            lastSegmentLength =
+                                res.length - 1 - res.indexOf(separator);
+                        }
+                        lastSlash = i;
+                        dots = 0;
+                        continue;
+                    }
+                    else if (res.length !== 0) {
+                        res = '';
+                        lastSegmentLength = 0;
+                        lastSlash = i;
+                        dots = 0;
+                        continue;
+                    }
+                }
+                if (allowAboveRoot) {
+                    res += res.length > 0 ? `${separator}..` : '..';
+                    lastSegmentLength = 2;
+                }
+            }
+            else {
+                if (res.length > 0) {
+                    res += `${separator}${path.slice(lastSlash + 1, i)}`;
+                }
+                else {
+                    res = path.slice(lastSlash + 1, i);
+                }
+                lastSegmentLength = i - lastSlash - 1;
+            }
+            lastSlash = i;
+            dots = 0;
+        }
+        else if (code === CHAR_DOT && dots !== -1) {
+            ++dots;
+        }
+        else {
+            dots = -1;
+        }
+    }
+    return res;
+}
+export function resolve(...args) {
+    let resolvedPath = '';
+    let resolvedAbsolute = false;
+    for (let i = args.length - 1; i >= -1 && !resolvedAbsolute; i--) {
+        const path = i >= 0 ? args[i] : '/';
+        validateString(path, 'path');
+        // Skip empty entries
+        if (path.length === 0) {
+            continue;
+        }
+        resolvedPath = `${path}/${resolvedPath}`;
+        resolvedAbsolute = path.charCodeAt(0) === CHAR_FORWARD_SLASH;
+    }
+    // At this point the path should be resolved to a full absolute path, but
+    // handle relative paths to be safe (might happen when process.cwd() fails)
+    // Normalize the path
+    resolvedPath = normalizeString(resolvedPath, !resolvedAbsolute, '/', isPosixPathSeparator);
+    if (resolvedAbsolute) {
+        return `/${resolvedPath}`;
+    }
+    return resolvedPath.length > 0 ? resolvedPath : '.';
+}
+export function relative(from, to) {
+    validateString(from, 'from');
+    validateString(to, 'to');
+    if (from === to)
+        return '';
+    // Trim leading forward slashes.
+    from = resolve(from);
+    to = resolve(to);
+    if (from === to)
+        return '';
+    const fromStart = 1;
+    const fromEnd = from.length;
+    const fromLen = fromEnd - fromStart;
+    const toStart = 1;
+    const toLen = to.length - toStart;
+    // Compare paths to find the longest common path from root
+    const length = (fromLen < toLen ? fromLen : toLen);
+    let lastCommonSep = -1;
+    let i = 0;
+    for (; i < length; i++) {
+        const fromCode = from.charCodeAt(fromStart + i);
+        if (fromCode !== to.charCodeAt(toStart + i)) {
+            break;
+        }
+        else if (fromCode === CHAR_FORWARD_SLASH) {
+            lastCommonSep = i;
+        }
+    }
+    if (i === length) {
+        if (toLen > length) {
+            if (to.charCodeAt(toStart + i) === CHAR_FORWARD_SLASH) {
+                // We get here if `from` is the exact base path for `to`.
+                // For example: from='/foo/bar'; to='/foo/bar/baz'
+                return to.slice(toStart + i + 1);
+            }
+            if (i === 0) {
+                // We get here if `from` is the root
+                // For example: from='/'; to='/foo'
+                return to.slice(toStart + i);
+            }
+        }
+        else if (fromLen > length) {
+            if (from.charCodeAt(fromStart + i) === CHAR_FORWARD_SLASH) {
+                // We get here if `to` is the exact base path for `from`.
+                // For example: from='/foo/bar/baz'; to='/foo/bar'
+                lastCommonSep = i;
+            }
+            else if (i === 0) {
+                // We get here if `to` is the root.
+                // For example: from='/foo/bar'; to='/'
+                lastCommonSep = 0;
+            }
+        }
+    }
+    let out = '';
+    // Generate the relative path based on the path difference between `to`
+    // and `from`.
+    for (i = fromStart + lastCommonSep + 1; i <= fromEnd; ++i) {
+        if (i === fromEnd ||
+            from.charCodeAt(i) === CHAR_FORWARD_SLASH) {
+            out += out.length === 0 ? '..' : '/..';
+        }
+    }
+    // Lastly, append the rest of the destination (`to`) path that comes after
+    // the common path parts.
+    return `${out}${to.slice(toStart + lastCommonSep)}`;
+}