tor-browser

The Tor Browser
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txXMLUtils.h (2141B)

      1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* This Source Code Form is subject to the terms of the Mozilla Public
      3 * License, v. 2.0. If a copy of the MPL was not distributed with this
      4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      5 
      6 /**
      7 * An XML Utility class
      8 **/
      9 
     10 #ifndef MITRE_XMLUTILS_H
     11 #define MITRE_XMLUTILS_H
     12 
     13 #include "nsDependentSubstring.h"
     14 #include "txCore.h"
     15 #include "txXPathNode.h"
     16 
     17 #define kExpatSeparatorChar 0xFFFF
     18 
     19 extern "C" int MOZ_XMLIsLetter(const char* ptr);
     20 extern "C" int MOZ_XMLIsNCNameChar(const char* ptr);
     21 
     22 class nsAtom;
     23 
     24 class XMLUtils {
     25 public:
     26  static nsresult splitExpatName(const char16_t* aExpatName, nsAtom** aPrefix,
     27                                 nsAtom** aLocalName, int32_t* aNameSpaceID);
     28  static nsresult splitQName(const nsAString& aName, nsAtom** aPrefix,
     29                             nsAtom** aLocalName);
     30 
     31  /*
     32   * Returns true if the given character is whitespace.
     33   */
     34  static bool isWhitespace(const char16_t& aChar) {
     35    return (aChar <= ' ' &&
     36            (aChar == ' ' || aChar == '\r' || aChar == '\n' || aChar == '\t'));
     37  }
     38 
     39  /**
     40   * Returns true if the given string has only whitespace characters
     41   */
     42  static bool isWhitespace(const nsAString& aText);
     43 
     44  /**
     45   * Normalizes the value of a XML processingInstruction
     46   **/
     47  static void normalizePIValue(nsAString& attValue);
     48 
     49  /**
     50   * Returns true if the given string is a valid XML QName
     51   */
     52  static bool isValidQName(const nsAString& aQName, const char16_t** aColon);
     53 
     54  /**
     55   * Returns true if the given character represents an Alpha letter
     56   */
     57  static bool isLetter(char16_t aChar) {
     58    return !!MOZ_XMLIsLetter(reinterpret_cast<const char*>(&aChar));
     59  }
     60 
     61  /**
     62   * Returns true if the given character is an allowable NCName character
     63   */
     64  static bool isNCNameChar(char16_t aChar) {
     65    return !!MOZ_XMLIsNCNameChar(reinterpret_cast<const char*>(&aChar));
     66  }
     67 
     68  /*
     69   * Walks up the document tree and returns true if the closest xml:space
     70   * attribute is "preserve"
     71   */
     72  static bool getXMLSpacePreserve(const txXPathNode& aNode);
     73 };
     74 
     75 #endif