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Diff for /pegasus/src/Pegasus/Common/LanguageParser.cpp between version 1.1.2.1 and 1.38

version 1.1.2.1, 2003/07/16 21:45:25 version 1.38, 2013/02/06 12:36:23
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 //%/////////////////////////////////////////////////////////////////////////////  //%LICENSE////////////////////////////////////////////////////////////////
 // //
 // Copyright (c) 2000, 2001, 2002 BMC Software, Hewlett-Packard Company, IBM,  // Licensed to The Open Group (TOG) under one or more contributor license
 // The Open Group, Tivoli Systems  // agreements.  Refer to the OpenPegasusNOTICE.txt file distributed with
   // this work for additional information regarding copyright ownership.
   // Each contributor licenses this file to you under the OpenPegasus Open
   // Source License; you may not use this file except in compliance with the
   // License.
 // //
 // Permission is hereby granted, free of charge, to any person obtaining a copy  // Permission is hereby granted, free of charge, to any person obtaining a
 // of this software and associated documentation files (the "Software"), to  // copy of this software and associated documentation files (the "Software"),
 // deal in the Software without restriction, including without limitation the  // to deal in the Software without restriction, including without limitation
 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or  // the rights to use, copy, modify, merge, publish, distribute, sublicense,
 // sell copies of the Software, and to permit persons to whom the Software is  // and/or sell copies of the Software, and to permit persons to whom the
 // furnished to do so, subject to the following conditions:  // Software is furnished to do so, subject to the following conditions:
 //  
 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN  
 // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED  
 // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT  
 // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR  
 // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT  
 // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN  
 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION  
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  
 // //
 //==============================================================================  // The above copyright notice and this permission notice shall be included
   // in all copies or substantial portions of the Software.
 // //
 // Author: Humberto Rivero (hurivero@us.ibm.com)  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
   // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
   // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // //
 // Modified By:  //////////////////////////////////////////////////////////////////////////
 // //
 //%///////////////////////////////////////////////////////////////////////////// //%/////////////////////////////////////////////////////////////////////////////
  
 #include <Pegasus/Common/LanguageParser.h> #include <Pegasus/Common/LanguageParser.h>
 #include <Pegasus/Common/InternalException.h> #include <Pegasus/Common/InternalException.h>
 #include <Pegasus/Common/Tracer.h> #include <Pegasus/Common/Tracer.h>
   #include <Pegasus/Common/MessageLoader.h>
 #include <cstring> #include <cstring>
  
 //PEGASUS_USING_STD;  #ifdef PEGASUS_HAS_ICU
   # include <unicode/locid.h>
   #endif
   
 PEGASUS_NAMESPACE_BEGIN PEGASUS_NAMESPACE_BEGIN
  
 const LanguageParser LanguageParser::EMPTY = LanguageParser();  static char LANGUAGE_TAG_SEPARATOR_CHAR = '-';
  
 void LanguageParser::parseHdr(Array<String> &values, String & hdr){  AcceptLanguageList LanguageParser::parseAcceptLanguageHeader(
         // look for ',' which designates distict (Accept/Content)-Language fields      const String& acceptLanguageHeader)
         // the form: [languagetag, languagetag, languagetag] so whitespace removal  {
         // may be necessary.      PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::parseAcceptLanguageHeader");
         // then store them in the array  
         PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::parseHdr");      AcceptLanguageList acceptLanguages;
         Uint32 i = 0;  
         while( i != PEG_NOT_FOUND ){      try
                 i = hdr.find(",");      {
                 if( i != PEG_NOT_FOUND ){          Array<String> languageElements;
                         values.append(hdr.subString(0,i));          LanguageParser::_parseLanguageHeader(
                         while(hdr[i+1] == ' ') i++;  // get rid of whitespace after ","              acceptLanguageHeader,
                         hdr = hdr.subString(i+1);              languageElements);
                 }  
                 else{  // only one field, build an object with it          for (Uint32 i = 0; i < languageElements.size(); i++)
                         values.append(hdr);          {
                 }              String languageTagString;
               Real32 qualityValue;
               LanguageParser::_parseAcceptLanguageElement(
                   languageElements[i], languageTagString, qualityValue);
               acceptLanguages.insert(
                   LanguageTag(languageTagString), qualityValue);
           }
       }
       catch (Exception& e)
       {
           throw InvalidAcceptLanguageHeader(e.getMessage());
         }         }
   
         PEG_METHOD_EXIT();         PEG_METHOD_EXIT();
       return acceptLanguages;
 } }
  
 Real32 LanguageParser::parseAcceptLanguageValue(String &language_tag, String & hdr){  ContentLanguageList LanguageParser::parseContentLanguageHeader(
         // look for ';' in hdr, that means we have a quality value to capture      const String& contentLanguageHeader)
     // if not, we only have a language  {
       PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::parseContentLanguageHeader");
     // if hdr begins with "x-" then we have a non-IANA (private) language tag  
          PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::parseAcceptLanguageValue");      ContentLanguageList contentLanguages;
     Uint32 i;  
     Boolean validate_length = true;      try
         if((( i = hdr.find("x-")) != PEG_NOT_FOUND ) && (i == 0)){      {
                 hdr = convertPrivateLanguageTag(hdr);          Array<String> languageElements;
                 validate_length = false;          LanguageParser::_parseLanguageHeader(
         }              contentLanguageHeader,
               languageElements);
         // get rid of any beginning or trailing whitespaces  
         Uint32 j;          for (Uint32 i = 0; i < languageElements.size(); i++)
         while( (j = hdr.find(" ")) != PEG_NOT_FOUND ){          {
                 hdr.remove(j,1);              contentLanguages.append(LanguageTag(languageElements[i]));
         }  
   
     Real32 quality = 1;  
         i = hdr.find(";");  
         if(i != PEG_NOT_FOUND){ // extract and store language and quality  
                 if(isValid(hdr.subString(0,i), validate_length)){  
                         language_tag = hdr.subString(0,i);  
                         hdr.remove(0,i+3);  // remove everything but the quality value  
                 }  
                 else{  
                         throw InvalidAcceptLanguageHeader(  
                                 "AcceptLanguage contains too many characters or non-alpha characters");  
                 }  
                 //validate quality  
                 quality = atof(hdr.getCString());  
                 if(quality > 1.0 || quality < 0.0){  
                         throw InvalidAcceptLanguageHeader(  
                                 "AcceptLanguage contains an invalid quality value");  
                 }                 }
         }         }
         else{   // extract and store language, quality defaults to 1.0      catch (Exception& e)
                 if(isValid(hdr, validate_length)) language_tag = hdr;      {
                 else throw InvalidAcceptLanguageHeader(          throw InvalidContentLanguageHeader(e.getMessage());
                                 "AcceptLanguage contains too many characters or non-alpha characters");  
         }         }
  
         PEG_METHOD_EXIT();         PEG_METHOD_EXIT();
         return quality;      return contentLanguages;
 } }
  
 String LanguageParser::parseContentLanguageValue(String & hdr){  void LanguageParser::parseLanguageTag(
         // we are looking for the language part of the hdr only,      const String& languageTagString,
         // according to the RFC, there may be parenthesized strings      String& language,
         // that describe the purpose of the language, we need to ignore those      String& country,
         PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::parseContentLanguageValue");      String& variant)
         String value = hdr;  {
         Uint32 i,j;      PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::parseLanguageTag");
         while((i = value.find("(")) != PEG_NOT_FOUND){ // get rid of anything in parenthesis in hdr if found  
                 if((j = value.find(")")) != PEG_NOT_FOUND)      language.clear();
                         value.remove(i, (j-i)+1);      country.clear();
                 else  throw InvalidContentLanguageHeader(      variant.clear();
                                                         "ContentLanguage does not contain terminating ) character");  
       if (languageTagString == "*")
       {
           // Parsing and validation is complete
           PEG_METHOD_EXIT();
           return;
         }         }
         // get rid of any beginning or trailing whitespaces  
         while( (i = value.find(" ")) != PEG_NOT_FOUND ){      Boolean isStandardFormat = true;    // RFC 3066 (ISO 639, ISO 3166)
                 value.remove(i,1);      Array<String> subtags;
   
       _parseLanguageSubtags(subtags, languageTagString);
   
       // _parseLanguageSubtags() always returns at least one subtag.
       PEGASUS_ASSERT(subtags.size() > 0);
   
       // Validate the primary subtag.
       // Given a languageTagString "en-US-mn" the language is "en".
   
       language = subtags[0];
   
       if ((language == "i") || (language == "x"))
       {
           // These primary tags are allowed, but are not ISO 639 compliant
           isStandardFormat = false;
           language.clear();
         }         }
         if(!isValid(value)) throw InvalidContentLanguageHeader(      else if ((language.size() != 2) && (language.size() != 3))
                                                         "ContentLanguage contains too many characters or non-alpha characters");      {
           // Except for "i" and "x", primary tags must be 2 or 3 characters,
           // according to RFC 3066.
   
           // Do not localize this message; it could cause recursion.
         PEG_METHOD_EXIT();         PEG_METHOD_EXIT();
         return value;          throw Exception(Formatter::format(
               "Invalid language tag \"$0\".",
               languageTagString));
 } }
  
 String LanguageParser::getLanguage(String & language_tag){      if (subtags.size() == 1)
         // given a language_tag: en-US-mn we want to return "en"      {
         Uint32 i;          // If only the primary subtag is present, we are done!
         if((i = language_tag.find(findSeparator(language_tag.getCString()))) != PEG_NOT_FOUND)          PEG_METHOD_EXIT();
                 return language_tag.subString(0,i);          return;
         return String(language_tag);  
 } }
  
 String LanguageParser::getCountry(String & language_tag){      // Validate the second subtag.
         // given a language_tag: en-US-mn we want to return "US"      // Given a languageTagString "en-US-mn" the country is "US".
         Uint32 i,j;  
         if( (i = language_tag.find(findSeparator(language_tag.getCString()))) != PEG_NOT_FOUND )      if (subtags[1].size() == 1)
                 if( (j = language_tag.find(i+1, findSeparator(language_tag.getCString()))) != PEG_NOT_FOUND )      {
                         return language_tag.subString(i+1, j-(i+1));          // The second subtag may not be a single character according to
                 else          // RFC 3066.
                         return language_tag.subString(i+1);  
         return String::EMPTY;          // Do not localize this message; it could cause recursion.
           PEG_METHOD_EXIT();
           throw Exception(Formatter::format(
               "Invalid language tag \"$0\".",
               languageTagString));
 } }
  
 String LanguageParser::getVariant(String & language_tag){      if (isStandardFormat)
         // given a language_tag: en-US-mn we want to return "mn"      {
         Uint32 i;          Uint32 variantIndex = 1;
         if( (i = language_tag.find(findSeparator(language_tag.getCString()))) != PEG_NOT_FOUND )  
                 if( (i = language_tag.find(i+1, findSeparator(language_tag.getCString()))) != PEG_NOT_FOUND )          if (subtags[1].size() == 2)
                         return language_tag.subString(i+1);          {
         return String::EMPTY;              country = subtags[1];
               variantIndex = 2;
 } }
  
 void LanguageParser::parseLanguageSubtags(Array<String> &subtags, String language_tag){          Uint32 numSubtags = subtags.size();
     PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::parseLanguageSubtags");  
         Uint32 i;          if (variantIndex < numSubtags)
         char separator = findSeparator(language_tag.getCString());          {
         while( (i = language_tag.find(Char16(separator))) != PEG_NOT_FOUND ){              variant = subtags[variantIndex++];
                         subtags.append(language_tag.subString(0,i));  
                         language_tag.remove(0,i + 1);              while (variantIndex < numSubtags)
               {
                   variant.append(LANGUAGE_TAG_SEPARATOR_CHAR);
                   variant.append(subtags[variantIndex++]);
               }
         }         }
         if(language_tag.size() > 0)      }
                 subtags.append(language_tag);  
         PEG_METHOD_EXIT();         PEG_METHOD_EXIT();
 } }
  
 Boolean LanguageParser::isValid(String language_tag, Boolean validate_length){  void LanguageParser::validateQualityValue(Real32 quality)
         //break the String down into parts(subtags), then validate each part  {
       if ((quality > 1.0) || (quality < 0.0))
       {
           MessageLoaderParms parms(
               "Common.LanguageParser.INVALID_QUALITY_VALUE",
               "AcceptLanguage contains an invalid quality value");
           throw InvalidAcceptLanguageHeader(MessageLoader::getMessage(parms));
       }
   }
  
         if(language_tag == "*") return true;  String LanguageParser::buildAcceptLanguageHeader(
       const AcceptLanguageList& acceptLanguages)
   {
       String alString;
       Uint32 numAcceptLanguages = acceptLanguages.size();
  
         Array<String> subtags;      for (Uint32 i = 0; i < numAcceptLanguages; i++)
         parseLanguageSubtags(subtags, language_tag);      {
         if(subtags.size() > 0){          alString.append(acceptLanguages.getLanguageTag(i).toString());
                 for(int i = 0; i < subtags.size(); i++){  
                         //length should be 8 or less AND all characters should be A-Z or a-z          Real32 q = acceptLanguages.getQualityValue(i);
                         if((validate_length && subtags[i].size() > 8) || !checkAlpha(subtags[i].getCString()))          if (q != 1.0)
                                 return false;          {
               char qValueString[6];
               sprintf(qValueString, "%4.3f", q);
               alString.append(";q=");
               alString.append(qValueString);
                 }                 }
   
           if (i < numAcceptLanguages - 1)
           {
               alString.append(",");
         }         }
         else{ //nothing back from parseLanguageSubtags  
                 return false;  
         }         }
         return true;  
       return alString;
   }
   
   String LanguageParser::buildContentLanguageHeader(
       const ContentLanguageList& contentLanguages)
   {
       String clString;
       Uint32 numContentLanguages = contentLanguages.size();
   
       for (Uint32 i = 0; i < numContentLanguages; i++)
       {
           clString.append(contentLanguages.getLanguageTag(i).toString());
   
           if (i < numContentLanguages - 1)
           {
               clString.append(",");
           }
 } }
  
 String LanguageParser::convertPrivateLanguageTag(String language_tag){      return clString;
         // figure out if its a unix style locale or windows locale  
         int i;  
         if(( i = language_tag.find("pegasus-")) != PEG_NOT_FOUND ){  
                 language_tag = language_tag.subString(i+5);  // capture the remainder of the string  
                 return String(replaceSeparator(language_tag.getCString(), '-'));  
         }  
         //else if( (i = language_tag.find("win-")) != PEG_NOT_FOUND ){  
           // return language_tag.subString(i+4);  // capture the remainder of the string  
                 // call windows ID to ICU convert routine or locmap.c function here  
         //}  
         else{  
                 return language_tag;  
         }         }
   
   #ifdef PEGASUS_HAS_ICU
   String& LanguageParser::convertLocaleIdToLanguageTag(String& localeId)
   {
       static char LOCALE_ID_SEPARATOR_CHAR = '_';
       Uint32 index = 0;
       while ((index = localeId.find(index, LOCALE_ID_SEPARATOR_CHAR)) !=
                   PEG_NOT_FOUND)
       {
           localeId[index] = LANGUAGE_TAG_SEPARATOR_CHAR;
       }
       return localeId;
 } }
   #endif
   
   AcceptLanguageList LanguageParser::getDefaultAcceptLanguages()
   {
   #if defined(PEGASUS_HAS_MESSAGES) && defined(PEGASUS_HAS_ICU)
       Locale default_loc = Locale::getDefault();
   
       String localeId = default_loc.getName();
   
       try
       {
           return LanguageParser::parseAcceptLanguageHeader(
               convertLocaleIdToLanguageTag(localeId));
       }
       catch (const InvalidAcceptLanguageHeader& e)
       {
           Logger::put_l(Logger::ERROR_LOG, System::CIMSERVER, Logger::SEVERE,
               MessageLoaderParms(
                   "src.Server.cimserver.FAILED_TO_SET_PROCESS_LOCALE",
                   "Cannot convert the system process locale into a valid "
                       "Accept-Language format."));
           Logger::put(Logger::ERROR_LOG, System::CIMSERVER, Logger::SEVERE,
               e.getMessage());
           AcceptLanguageList al;
           al.insert(LanguageTag("*"), 1);
           return al;
       }
   #else
       return AcceptLanguageList();
   #endif
   }
   
   void LanguageParser::_parseLanguageHeader(
       const String& languageHeaderValue,
       Array<String>& languageElements)
   {
       PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::_parseLanguageHeader");
  
 Boolean LanguageParser::checkAlpha(CString _str){      languageElements.clear();
         for(int i = 0; i < strlen(_str); i++)      String element;
                 if( !isalpha(_str[i]) )  
       for (Uint32 i=0, len=languageHeaderValue.size(); i<len; i++)
       {
           Char16 nextChar = languageHeaderValue[i];
   
           if (isascii(nextChar) && isspace(nextChar))
           {
               // Ignore whitespace
           }
           else if (nextChar == '(')
           {
               // Ignore comments
               while (i < len)
               {
                   // Search for the closing parenthesis
                   if (languageHeaderValue[i] == ')')
                   {
                       break;
                   }
   
                   // Skip over escape characters
                   if (languageHeaderValue[i] == '\\')
                   {
                       i++;
                   }
   
                   i++;
               }
   
               // Check for a missing closing parenthesis
               if (i >= len)
               {
                   MessageLoaderParms parms(
                       "Common.LanguageParser.DOES_NOT_CONTAIN_TERMINATING",
                       "Closing \")\" character is missing.");
                   throw Exception(MessageLoader::getMessage(parms));
               }
           }
           else if (nextChar == ',')
           {
               // Check for the end of the element
               languageElements.append(element);
               element.clear();
           }
           else
           {
               // Unescape an escape character
               if ((nextChar == '\\') && (i < len-1))
               {
                   nextChar = languageHeaderValue[++i];
               }
   
               // Include this character in the value
               element.append(nextChar);
           }
       }
   
       // Include the last element in the languageElements array
       languageElements.append(element);
   
       PEG_METHOD_EXIT();
   }
   
   void LanguageParser::_parseAcceptLanguageElement(
       const String& acceptLanguageElement,
       String& languageTag,
       Real32& quality)
   {
       PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::_parseAcceptLanguageElement");
   
       // look for ';' in acceptLanguageElement, that means we have a
       // quality value to capture.  If not present, we only have a language tag.
   
       Uint32 semicolonIndex = acceptLanguageElement.find(";");
       if (semicolonIndex != PEG_NOT_FOUND)
       {
           // Separate the language tag and quality value
   
           String qualityString =
               acceptLanguageElement.subString(semicolonIndex+1);
           languageTag = acceptLanguageElement.subString(0, semicolonIndex);
   
           // Parse the quality value
   
           char dummyChar;
           int scanfConversions = sscanf(
               qualityString.getCString(),
               "q=%f%c", &quality, &dummyChar);
   
           if ((scanfConversions != 1) ||
               (qualityString.size() > 7))
           {
               MessageLoaderParms parms(
                   "Common.LanguageParser.INVALID_QUALITY_VALUE",
                   "AcceptLanguage contains an invalid quality value");
               PEG_METHOD_EXIT();
               throw Exception(MessageLoader::getMessage(parms));
           }
       }
       else
       {
           languageTag = acceptLanguageElement;
           quality = 1.0;
       }
   
       PEG_METHOD_EXIT();
   }
   
   void LanguageParser::_parseLanguageSubtags(
       Array<String>& subtags,
       const String& languageTagString)
   {
       PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::_parseLanguageSubtags");
   
       // Parse the language tag into subtags
   
       Uint32 subtagIndex = 0;
       Uint32 separatorIndex;
       while ((separatorIndex = languageTagString.find(
                   subtagIndex, LANGUAGE_TAG_SEPARATOR_CHAR)) != PEG_NOT_FOUND)
       {
           subtags.append(languageTagString.subString(
               subtagIndex, separatorIndex - subtagIndex));
           subtagIndex = separatorIndex + 1;
       }
       subtags.append(languageTagString.subString(subtagIndex));
   
       // Validate the syntax of each of the subtags
   
       for (Uint32 i = 0, n = subtags.size(); i < n; i++)
       {
           if (((i == 0) && !_isValidPrimarySubtagSyntax(subtags[i])) ||
               ((i > 0) && !_isValidSubtagSyntax(subtags[i])))
           {
               // throw Exception(MessageLoader::getMessage(parms));
               // do not localize message, requires a language tag for this
               // localization can cause recursion here
               // MessageLoaderParms::toString adds 5kb static code size, Do NOT
               // include in non-debug builds
   #ifdef PEGASUS_DEBUG
               MessageLoaderParms parms(
                   "Common.LanguageParser.MALFORMED_LANGUAGE_TAG",
                   "Malformed language tag \"$0\".", languageTagString);
               PEG_METHOD_EXIT();
               throw Exception(parms.toString());
   #else
               String malFormed("Malformed language tag:");
               malFormed.append(languageTagString);
               PEG_METHOD_EXIT();
               throw Exception(malFormed);
   #endif
           }
       }
   
       PEG_METHOD_EXIT();
   }
   
   Boolean LanguageParser::_isValidPrimarySubtagSyntax(const String& subtag)
   {
       if ((subtag.size() == 0) || (subtag.size() > 8))
       {
           return false;
       }
   
       for (Uint32 i = 0, n = subtag.size(); i < n; i++)
       {
           if (!(isascii(subtag[i]) && isalpha(subtag[i])))
           {
                         return false;                         return false;
           }
       }
   
         return true;         return true;
 } }
  
 char LanguageParser::findSeparator(CString _str){  Boolean LanguageParser::_isValidSubtagSyntax(const String& subtag)
         for(int i = 0; i < strlen(_str); i++)  {
                 if(!isalnum(_str[i]))      if ((subtag.size() == 0) || (subtag.size() > 8))
                         return _str[i];      {
         return '\0';          return false;
 } }
  
 CString LanguageParser::replaceSeparator(CString _s, char new_sep){      for (Uint32 i = 0, n = subtag.size(); i < n; i++)
         char * _str = const_cast<char *>((const char*)_s);      {
         for(int i = 0; i < strlen(_str); i++)          if (!(isascii(subtag[i]) && isalnum(subtag[i])))
                 _str[i] = (!isalnum(_str[i])) ? new_sep : _str[i];          {
         return (String(_str)).getCString();              return false;
           }
 } }
  
       return true;
   }
  
 PEGASUS_NAMESPACE_END PEGASUS_NAMESPACE_END

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