Move json, uri, utf and crypto libraries into the VM.

sdk/lib/uri/uri_base.dart

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+part of dart.uri;
+
+/**
+ * A parsed URI, inspired by Closure's [URI][] class. Implements [RFC-3986][].
+ * [uri]: http://closure-library.googlecode.com/svn/docs/class_goog_Uri.html
+ * [RFC-3986]: http://tools.ietf.org/html/rfc3986#section-4.3)
+ */
+class Uri {
+  final String scheme;
+  final String userInfo;
+  final String domain;
+  final int port;
+  final String path;
+  final String query;
+  final String fragment;
+
+  /**
+   * Deprecated. Please use [parse] instead.
+   */
+  Uri.fromString(String uri) : this._fromMatch(_splitRe.firstMatch(uri));
+
+  static Uri parse(String uri) => new Uri._fromMatch(_splitRe.firstMatch(uri));
+
+  Uri._fromMatch(Match m) :
+    this.fromComponents(scheme: _emptyIfNull(m[_COMPONENT_SCHEME]),
+                        userInfo: _emptyIfNull(m[_COMPONENT_USER_INFO]),
+                        domain: _emptyIfNull(m[_COMPONENT_DOMAIN]),
+                        port: _parseIntOrZero(m[_COMPONENT_PORT]),
+                        path: _emptyIfNull(m[_COMPONENT_PATH]),
+                        query: _emptyIfNull(m[_COMPONENT_QUERY_DATA]),
+                        fragment: _emptyIfNull(m[_COMPONENT_FRAGMENT]));
+
+  const Uri.fromComponents({this.scheme: "",
+                            this.userInfo: "",
+                            this.domain: "",
+                            this.port: 0,
+                            this.path: "",
+                            this.query: "",
+                            this.fragment: ""});
+
+  Uri(String uri) : this.fromString(uri);
+
+  static String _emptyIfNull(String val) => val != null ? val : '';
+
+  static int _parseIntOrZero(String val) {
+    if (val != null && val != '') {
+      return int.parse(val);
+    } else {
+      return 0;
+    }
+  }
+
+  // NOTE: This code was ported from: closure-library/closure/goog/uri/utils.js
+  static final RegExp _splitRe = new RegExp(
+      '^'
+      '(?:'
+        '([^:/?#.]+)'                   // scheme - ignore special characters
+                                        // used by other URL parts such as :,
+                                        // ?, /, #, and .
+      ':)?'
+      '(?://'
+        '(?:([^/?#]*)@)?'               // userInfo
+        '([\\w\\d\\-\\u0100-\\uffff.%]*)'
+                                        // domain - restrict to letters,
+                                        // digits, dashes, dots, percent
+                                        // escapes, and unicode characters.
+        '(?::([0-9]+))?'                // port
+      ')?'
+      '([^?#]+)?'                       // path
+      '(?:\\?([^#]*))?'                 // query
+      '(?:#(.*))?'                      // fragment
+      '\$');
+
+  static const _COMPONENT_SCHEME = 1;
+  static const _COMPONENT_USER_INFO = 2;
+  static const _COMPONENT_DOMAIN = 3;
+  static const _COMPONENT_PORT = 4;
+  static const _COMPONENT_PATH = 5;
+  static const _COMPONENT_QUERY_DATA = 6;
+  static const _COMPONENT_FRAGMENT = 7;
+
+  /**
+   * Returns `true` if the URI is absolute.
+   */
+  bool get isAbsolute {
+    if ("" == scheme) return false;
+    if ("" != fragment) return false;
+    return true;
+
+    /* absolute-URI  = scheme ":" hier-part [ "?" query ]
+     * hier-part   = "//" authority path-abempty
+     *             / path-absolute
+     *             / path-rootless
+     *             / path-empty
+     *
+     * path          = path-abempty    ; begins with "/" or is empty
+     *               / path-absolute   ; begins with "/" but not "//"
+     *               / path-noscheme   ; begins with a non-colon segment
+     *               / path-rootless   ; begins with a segment
+     *               / path-empty      ; zero characters
+     *
+     * path-abempty  = *( "/" segment )
+     * path-absolute = "/" [ segment-nz *( "/" segment ) ]
+     * path-noscheme = segment-nz-nc *( "/" segment )
+     * path-rootless = segment-nz *( "/" segment )
+     * path-empty    = 0<pchar>
+     * segment       = *pchar
+     * segment-nz    = 1*pchar
+     * segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" )
+     *               ; non-zero-length segment without any colon ":"
+     *
+     * pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
+     */
+  }
+
+  Uri resolve(String uri) {
+    return resolveUri(Uri.parse(uri));
+  }
+
+  Uri resolveUri(Uri reference) {
+    // From RFC 3986.
+    String targetScheme;
+    String targetUserInfo;
+    String targetDomain;
+    int targetPort;
+    String targetPath;
+    String targetQuery;
+    if (reference.scheme != "") {
+      targetScheme = reference.scheme;
+      targetUserInfo = reference.userInfo;
+      targetDomain = reference.domain;
+      targetPort = reference.port;
+      targetPath = removeDotSegments(reference.path);
+      targetQuery = reference.query;
+    } else {
+      if (reference.hasAuthority) {
+        targetUserInfo = reference.userInfo;
+        targetDomain = reference.domain;
+        targetPort = reference.port;
+        targetPath = removeDotSegments(reference.path);
+        targetQuery = reference.query;
+      } else {
+        if (reference.path == "") {
+          targetPath = this.path;
+          if (reference.query != "") {
+            targetQuery = reference.query;
+          } else {
+            targetQuery = this.query;
+          }
+        } else {
+          if (reference.path.startsWith("/")) {
+            targetPath = removeDotSegments(reference.path);
+          } else {
+            targetPath = removeDotSegments(merge(this.path, reference.path));
+          }
+          targetQuery = reference.query;
+        }
+        targetUserInfo = this.userInfo;
+        targetDomain = this.domain;
+        targetPort = this.port;
+      }
+      targetScheme = this.scheme;
+    }
+    return new Uri.fromComponents(scheme: targetScheme,
+                                  userInfo: targetUserInfo,
+                                  domain: targetDomain,
+                                  port: targetPort,
+                                  path: targetPath,
+                                  query: targetQuery,
+                                  fragment: reference.fragment);
+  }
+
+  bool get hasAuthority {
+    return (userInfo != "") || (domain != "") || (port != 0);
+  }
+
+  /**
+   * For http/https schemes returns URI's [origin][] - scheme://domain:port.
+   * For all other schemes throws ArgumentError.
+   * [origin]: http://www.w3.org/TR/2011/WD-html5-20110405/origin-0.html#origin
+   */
+  String get origin {
+    if (scheme == "") {
+      // TODO(aprelev@gmail.com): Use StateException instead
+      throw new ArgumentError("Cannot use origin without a scheme");
+    }
+    if (scheme != "http" && scheme != "https") {
+      // TODO(aprelev@gmail.com): Use StateException instead
+      throw new ArgumentError(
+        "origin is applicable to http/https schemes only. Not \'$scheme\'");
+    }
+    StringBuffer sb = new StringBuffer();
+    sb.add(scheme);
+    sb.add(":");
+    if (domain == null || domain == "") {
+      // TODO(aprelev@gmail.com): Use StateException instead
+      throw new ArgumentError("Cannot use origin without a domain");
+    }
+
+    sb.add("//");
+    sb.add(domain);
+    if (port != 0) {
+      sb.add(":");
+      sb.add(port);
+    }
+    return sb.toString();
+  }
+
+  String toString() {
+    StringBuffer sb = new StringBuffer();
+    _addIfNonEmpty(sb, scheme, scheme, ':');
+    if (hasAuthority || (scheme == "file")) {
+      sb.add("//");
+      _addIfNonEmpty(sb, userInfo, userInfo, "@");
+      sb.add(domain == null ? "null" : domain);
+      if (port != 0) {
+        sb.add(":");
+        sb.add(port.toString());
+      }
+    }
+    sb.add(path == null ? "null" : path);
+    _addIfNonEmpty(sb, query, "?", query);
+    _addIfNonEmpty(sb, fragment, "#", fragment);
+    return sb.toString();
+  }
+
+  bool operator==(other) {
+    if (other is! Uri) return false;
+    Uri uri = other;
+    return scheme == uri.scheme &&
+        userInfo == uri.userInfo &&
+        domain == uri.domain &&
+        port == uri.port &&
+        path == uri.path &&
+        query == uri.query &&
+        fragment == uri.fragment;
+  }
+
+  int get hashCode {
+    int combine(part, current) {
+      // The sum is truncated to 30 bits to make sure it fits into a Smi.
+      return (current * 31 + part.hashCode) & 0x3FFFFFFF;
+    }
+    return combine(scheme, combine(userInfo, combine(domain, combine(port,
+        combine(path, combine(query, combine(fragment, 1)))))));
+  }
+
+  static void _addIfNonEmpty(StringBuffer sb, String test,
+                             String first, String second) {
+    if ("" != test) {
+      sb.add(first == null ? "null" : first);
+      sb.add(second == null ? "null" : second);
+    }
+  }
+}