Initial revision

1 files changed, 784 insertions, 0 deletions

diff --git a/development/translation/opie-lupdate/fetchtr.cpp b/development/translation/opie-lupdate/fetchtr.cpp
new file mode 100644
index 0000000..eb25555
--- a/dev/null
+++ b/development/translation/opie-lupdate/fetchtr.cpp
@@ -0,0 +1,784 @@
+/**********************************************************************
+** Copyright (C) 2000 Trolltech AS.  All rights reserved.
+**
+** This file is part of Qt Linguist.
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+** See http://www.trolltech.com/gpl/ for GPL licensing information.
+**
+** Contact info@trolltech.com if any conditions of this licensing are
+** not clear to you.
+**
+**********************************************************************/
+
+#include <metatranslator.h>
+
+#include <qfile.h>
+#include <qregexp.h>
+#include <qstring.h>
+#include <qtextstream.h>
+#include <qvaluestack.h>
+#include <qxml.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+/* qmake ignore Q_OBJECT */
+
+static const char MagicComment[] = "TRANSLATOR ";
+
+static QMap<QCString, int> needs_Q_OBJECT;
+static QMap<QCString, int> lacks_Q_OBJECT;
+
+/*
+  The first part of this source file is the C++ tokenizer.  We skip
+  most of C++; the only tokens that interest us are defined here.
+  Thus, the code fragment
+
+      int main()
+      {
+	  printf( "Hello, world!\n" );
+	  return 0;
+      }
+
+  is broken down into the following tokens (Tok_ omitted):
+
+      Ident Ident LeftParen RightParen
+      LeftBrace
+	  Ident LeftParen String RightParen Semicolon
+	  return Semicolon
+      RightBrace.
+
+  The 0 doesn't produce any token.
+*/
+
+enum { Tok_Eof, Tok_class, Tok_namespace, Tok_return, Tok_tr,
+       Tok_trUtf8, Tok_translate, Tok_Q_OBJECT, Tok_Ident,
+       Tok_Comment, Tok_String, Tok_Arrow, Tok_Colon,
+       Tok_Gulbrandsen, Tok_LeftBrace, Tok_RightBrace, Tok_LeftParen,
+       Tok_RightParen, Tok_Comma, Tok_Semicolon };
+
+/*
+  The tokenizer maintains the following global variables. The names
+  should be self-explanatory.
+*/
+static QCString yyFileName;
+static int yyCh;
+static char yyIdent[128];
+static size_t yyIdentLen;
+static char yyComment[65536];
+static size_t yyCommentLen;
+static char yyString[16384];
+static size_t yyStringLen;
+static QValueStack<int> yySavedBraceDepth;
+static int yyBraceDepth;
+static int yyParenDepth;
+static int yyLineNo;
+static int yyCurLineNo;
+
+// the file to read from (if reading from a file)
+static FILE *yyInFile;
+
+// the string to read from and current position in the string (otherwise)
+static QString yyInStr;
+static int yyInPos;
+
+static int (*getChar)();
+
+static int getCharFromFile()
+{
+    int c = getc( yyInFile );
+    if ( c == '\n' )
+	yyCurLineNo++;
+    return c;
+}
+
+static int getCharFromString()
+{
+    if ( yyInPos == (int) yyInStr.length() ) {
+	return EOF;
+    } else {
+	return yyInStr[yyInPos++].latin1();
+    }
+}
+
+static void startTokenizer( const char *fileName, int (*getCharFunc)() )
+{
+    yyInPos = 0;
+    getChar = getCharFunc;
+
+    yyFileName = fileName;
+    yyCh = getChar();
+    yySavedBraceDepth.clear();
+    yyBraceDepth = 0;
+    yyParenDepth = 0;
+    yyCurLineNo = 1;
+}
+
+static int getToken()
+{
+    const char tab[] = "abfnrtv";
+    const char backTab[] = "\a\b\f\n\r\t\v";
+    uint n;
+
+    yyIdentLen = 0;
+    yyCommentLen = 0;
+    yyStringLen = 0;
+
+    while ( yyCh != EOF ) {
+	yyLineNo = yyCurLineNo;
+
+	if ( isalpha(yyCh) || yyCh == '_' ) {
+	    do {
+		if ( yyIdentLen < sizeof(yyIdent) - 1 )
+		    yyIdent[yyIdentLen++] = (char) yyCh;
+		yyCh = getChar();
+	    } while ( isalnum(yyCh) || yyCh == '_' );
+	    yyIdent[yyIdentLen] = '\0';
+
+	    switch ( yyIdent[0] ) {
+	    case 'Q':
+		if ( strcmp(yyIdent + 1, "_OBJECT") == 0 ) {
+		    return Tok_Q_OBJECT;
+		} else if ( strcmp(yyIdent + 1, "T_TR_NOOP") == 0 ) {
+		    return Tok_tr;
+		} else if ( strcmp(yyIdent + 1, "T_TRANSLATE_NOOP") == 0 ) {
+		    return Tok_translate;
+		}
+		break;
+	    case 'T':
+		// TR() for when all else fails
+		if ( qstricmp(yyIdent + 1, "R") == 0 )
+		    return Tok_tr;
+		break;
+	    case 'c':
+		if ( strcmp(yyIdent + 1, "lass") == 0 )
+		    return Tok_class;
+		break;
+	    case 'n':
+		if ( strcmp(yyIdent + 1, "amespace") == 0 )
+		    return Tok_namespace;
+		break;
+	    case 'r':
+		if ( strcmp(yyIdent + 1, "eturn") == 0 )
+		    return Tok_return;
+		break;
+	    case 's':
+		if ( strcmp(yyIdent + 1, "truct") == 0 )
+		    return Tok_class;
+		break;
+	    case 't':
+		if ( strcmp(yyIdent + 1, "r") == 0 ) {
+		    return Tok_tr;
+		} else if ( qstrcmp(yyIdent + 1, "rUtf8") == 0 ) {
+		    return Tok_trUtf8;
+		} else if ( qstrcmp(yyIdent + 1, "ranslate") == 0 ) {
+		    return Tok_translate;
+		}
+	    }
+	    return Tok_Ident;
+	} else {
+	    switch ( yyCh ) {
+	    case '#':
+		/*
+		  Early versions of lupdate complained about
+		  unbalanced braces in the following code:
+
+		      #ifdef ALPHA
+			  while ( beta ) {
+		      #else
+			  while ( gamma ) {
+		      #endif
+			      delta;
+			  }
+
+		  The code contains, indeed, two opening braces for
+		  one closing brace; yet there's no reason to panic.
+
+		  The solution is to remember yyBraceDepth as it was
+		  when #if, #ifdef or #ifndef was met, and to set
+		  yyBraceDepth to that value when meeting #elif or
+		  #else.
+		*/
+		do {
+		    yyCh = getChar();
+		} while ( isspace(yyCh) && yyCh != '\n' );
+
+		switch ( yyCh ) {
+		case 'i':
+		    yyCh = getChar();
+		    if ( yyCh == 'f' ) {
+			// if, ifdef, ifndef
+			yySavedBraceDepth.push( yyBraceDepth );
+		    }
+		    break;
+		case 'e':
+		    yyCh = getChar();
+		    if ( yyCh == 'l' ) {
+			// elif, else
+			if ( !yySavedBraceDepth.isEmpty() )
+			    yyBraceDepth = yySavedBraceDepth.top();
+		    } else if ( yyCh == 'n' ) {
+			// endif
+			if ( !yySavedBraceDepth.isEmpty() )
+			    yySavedBraceDepth.pop();
+		    }
+		}
+		while ( isalnum(yyCh) || yyCh == '_' )
+		    yyCh = getChar();
+		break;
+	    case '/':
+		yyCh = getChar();
+		if ( yyCh == '/' ) {
+		    do {
+			yyCh = getChar();
+		    } while ( yyCh != EOF && yyCh != '\n' );
+		} else if ( yyCh == '*' ) {
+		    bool metAster = FALSE;
+		    bool metAsterSlash = FALSE;
+
+		    while ( !metAsterSlash ) {
+			yyCh = getChar();
+			if ( yyCh == EOF ) {
+			    fprintf( stderr,
+				     "%s: Unterminated C++ comment starting at"
+				     " line %d\n",
+				     (const char *) yyFileName, yyLineNo );
+			    yyComment[yyCommentLen] = '\0';
+			    return Tok_Comment;
+			}
+			if ( yyCommentLen < sizeof(yyComment) - 1 )
+			    yyComment[yyCommentLen++] = (char) yyCh;
+
+			if ( yyCh == '*' )
+			    metAster = TRUE;
+			else if ( metAster && yyCh == '/' )
+			    metAsterSlash = TRUE;
+			else
+			    metAster = FALSE;
+		    }
+		    yyCh = getChar();
+		    yyCommentLen -= 2;
+		    yyComment[yyCommentLen] = '\0';
+		    return Tok_Comment;
+		}
+		break;
+	    case '"':
+		yyCh = getChar();
+
+		while ( yyCh != EOF && yyCh != '\n' && yyCh != '"' ) {
+		    if ( yyCh == '\\' ) {
+			yyCh = getChar();
+
+			if ( yyCh == '\n' ) {
+			    yyCh = getChar();
+			} else if ( yyCh == 'x' ) {
+			    QCString hex = "0";
+
+			    yyCh = getChar();
+			    while ( isxdigit(yyCh) ) {
+				hex += (char) yyCh;
+				yyCh = getChar();
+			    }
+			    sscanf( hex, "%x", &n );
+			    if ( yyStringLen < sizeof(yyString) - 1 )
+				yyString[yyStringLen++] = (char) n;
+			} else if ( yyCh >= '0' && yyCh < '8' ) {
+			    QCString oct = "";
+
+			    do {
+				oct += (char) yyCh;
+				yyCh = getChar();
+			    } while ( yyCh >= '0' && yyCh < '8' );
+			    sscanf( oct, "%o", &n );
+			    if ( yyStringLen < sizeof(yyString) - 1 )
+				yyString[yyStringLen++] = (char) n;
+			} else {
+			    const char *p = strchr( tab, yyCh );
+			    if ( yyStringLen < sizeof(yyString) - 1 )
+				yyString[yyStringLen++] = ( p == 0 ) ?
+					(char) yyCh : backTab[p - tab];
+			    yyCh = getChar();
+			}
+		    } else {
+			if ( yyStringLen < sizeof(yyString) - 1 )
+			    yyString[yyStringLen++] = (char) yyCh;
+			yyCh = getChar();
+		    }
+		}
+		yyString[yyStringLen] = '\0';
+
+		if ( yyCh != '"' )
+		    qWarning( "%s:%d: Unterminated C++ string",
+			      (const char *) yyFileName, yyLineNo );
+
+		if ( yyCh == EOF ) {
+		    return Tok_Eof;
+		} else {
+		    yyCh = getChar();
+		    return Tok_String;
+		}
+		break;
+	    case '-':
+		yyCh = getChar();
+		if ( yyCh == '>' ) {
+		    yyCh = getChar();
+		    return Tok_Arrow;
+		}
+		break;
+	    case ':':
+		yyCh = getChar();
+		if ( yyCh == ':' ) {
+		    yyCh = getChar();
+		    return Tok_Gulbrandsen;
+		}
+		return Tok_Colon;
+	    case '\'':
+		yyCh = getChar();
+		if ( yyCh == '\\' )
+		    yyCh = getChar();
+
+		do {
+		    yyCh = getChar();
+		} while ( yyCh != EOF && yyCh != '\'' );
+		yyCh = getChar();
+		break;
+	    case '{':
+		yyBraceDepth++;
+		yyCh = getChar();
+		return Tok_LeftBrace;
+	    case '}':
+		yyBraceDepth--;
+		yyCh = getChar();
+		return Tok_RightBrace;
+	    case '(':
+		yyParenDepth++;
+		yyCh = getChar();
+		return Tok_LeftParen;
+	    case ')':
+		yyParenDepth--;
+		yyCh = getChar();
+		return Tok_RightParen;
+	    case ',':
+		yyCh = getChar();
+		return Tok_Comma;
+	    case ';':
+		yyCh = getChar();
+		return Tok_Semicolon;
+	    default:
+		yyCh = getChar();
+	    }
+	}
+    }
+    return Tok_Eof;
+}
+
+/*
+  The second part of this source file is the parser. It accomplishes
+  a very easy task: It finds all strings inside a tr() or translate()
+  call, and possibly finds out the context of the call. It supports
+  three cases: (1) the context is specified, as in
+  FunnyDialog::tr("Hello") or translate("FunnyDialog", "Hello");
+  (2) the call appears within an inlined function; (3) the call
+  appears within a function defined outside the class definition.
+*/
+
+static int yyTok;
+
+static bool match( int t )
+{
+    bool matches = ( yyTok == t );
+    if ( matches )
+	yyTok = getToken();
+    return matches;
+}
+
+static bool matchString( QCString *s )
+{
+    bool matches = ( yyTok == Tok_String );
+    *s = "";
+    while ( yyTok == Tok_String ) {
+	*s += yyString;
+	yyTok = getToken();
+    }
+    return matches;
+}
+
+static bool matchEncoding( bool *utf8 )
+{
+    if ( yyTok == Tok_Ident ) {
+	if ( strcmp(yyIdent, "QApplication") == 0 ) {
+	    yyTok = getToken();
+	    if ( yyTok == Tok_Gulbrandsen )
+		yyTok = getToken();
+	}
+	*utf8 = QString( yyIdent ).endsWith( QString("UTF8") );
+	yyTok = getToken();
+	return TRUE;
+    } else {
+	return FALSE;
+    }
+}
+
+static void parse( MetaTranslator *tor, const char *initialContext,
+		   const char *defaultContext )
+{
+    QMap<QCString, QCString> qualifiedContexts;
+    QStringList namespaces;
+    QCString context;
+    QCString text;
+    QCString com;
+    QCString functionContext = initialContext;
+    QCString prefix;
+    bool utf8 = FALSE;
+    bool missing_Q_OBJECT = FALSE;
+
+    yyTok = getToken();
+    while ( yyTok != Tok_Eof ) {
+	switch ( yyTok ) {
+	case Tok_class:
+	    /*
+	      Partial support for inlined functions.
+	    */
+	    yyTok = getToken();
+	    if ( yyBraceDepth == (int) namespaces.count() &&
+		 yyParenDepth == 0 ) {
+		do {
+		    /*
+		      This code should execute only once, but we play
+		      safe with impure definitions such as
+		      'class Q_EXPORT QMessageBox', in which case
+		      'QMessageBox' is the class name, not 'Q_EXPORT'.
+		    */
+		    functionContext = yyIdent;
+		    yyTok = getToken();
+		} while ( yyTok == Tok_Ident );
+
+		while ( yyTok == Tok_Gulbrandsen ) {
+		    yyTok = getToken();
+		    functionContext += "::";
+		    functionContext += yyIdent;
+		    yyTok = getToken();
+		}
+
+		if ( yyTok == Tok_Colon ) {
+		    missing_Q_OBJECT = TRUE;
+		} else {
+		    functionContext = defaultContext;
+		}
+	    }
+	    break;
+	case Tok_namespace:
+	    yyTok = getToken();
+	    if ( yyTok == Tok_Ident ) {
+		QCString ns = yyIdent;
+		yyTok = getToken();
+		if ( yyTok == Tok_LeftBrace &&
+		     yyBraceDepth == (int) namespaces.count() + 1 )
+		    namespaces.append( QString(ns) );
+	    }
+	    break;
+	case Tok_tr:
+	case Tok_trUtf8:
+	    utf8 = ( yyTok == Tok_trUtf8 );
+	    yyTok = getToken();
+	    if ( match(Tok_LeftParen) && matchString(&text) ) {
+		com = "";
+		if ( match(Tok_RightParen) || (match(Tok_Comma) &&
+			matchString(&com) && match(Tok_RightParen)) ) {
+		    if ( prefix.isNull() ) {
+			context = functionContext;
+			if ( !namespaces.isEmpty() )
+			    context.prepend( (namespaces.join(QString("::")) +
+					      QString("::")).latin1() );
+		    } else {
+			context = prefix;
+		    }
+		    prefix = (const char *) 0;
+
+		    if ( qualifiedContexts.contains(context) )
+			context = qualifiedContexts[context];
+		    tor->insert( MetaTranslatorMessage(context, text, com,
+						       QString::null, utf8) );
+
+		    if ( lacks_Q_OBJECT.contains(context) ) {
+			qWarning( "%s:%d: Class '%s' lacks Q_OBJECT macro",
+				  (const char *) yyFileName, yyLineNo,
+				  (const char *) context );
+			lacks_Q_OBJECT.remove( context );
+		    } else {
+			needs_Q_OBJECT.insert( context, 0 );
+		    }
+		}
+	    }
+	    break;
+	case Tok_translate:
+	    utf8 = FALSE;
+	    yyTok = getToken();
+	    if ( match(Tok_LeftParen) &&
+		 matchString(&context) &&
+		 match(Tok_Comma) &&
+		 matchString(&text) ) {
+		com = "";
+		if ( match(Tok_RightParen) ||
+		     (match(Tok_Comma) &&
+		      matchString(&com) &&
+		      (match(Tok_RightParen) ||
+		       match(Tok_Comma) &&
+		       matchEncoding(&utf8) &&
+		       match(Tok_RightParen))) )
+		    tor->insert( MetaTranslatorMessage(context, text, com,
+						       QString::null, utf8) );
+	    }
+	    break;
+	case Tok_Q_OBJECT:
+	    missing_Q_OBJECT = FALSE;
+	    yyTok = getToken();
+	    break;
+	case Tok_Ident:
+	    if ( !prefix.isNull() )
+		prefix += "::";
+	    prefix += yyIdent;
+	    yyTok = getToken();
+	    if ( yyTok != Tok_Gulbrandsen )
+		prefix = (const char *) 0;
+	    break;
+	case Tok_Comment:
+	    com = yyComment;
+	    com = com.simplifyWhiteSpace();
+	    if ( com.left(sizeof(MagicComment) - 1) == MagicComment ) {
+		com.remove( 0, sizeof(MagicComment) - 1 );
+		int k = com.find( ' ' );
+		if ( k == -1 ) {
+		    context = com;
+		} else {
+		    context = com.left( k );
+		    com.remove( 0, k + 1 );
+		    tor->insert( MetaTranslatorMessage(context, "", com,
+						       QString::null, FALSE) );
+		}
+
+		/*
+		  Provide a backdoor for people using "using
+		  namespace". See the manual for details.
+		*/
+		k = 0;
+		while ( (k = context.find("::", k)) != -1 ) {
+		    qualifiedContexts.insert( context.mid(k + 2), context );
+		    k++;
+		}
+	    }
+	    yyTok = getToken();
+	    break;
+	case Tok_Arrow:
+	    yyTok = getToken();
+	    if ( yyTok == Tok_tr || yyTok == Tok_trUtf8 )
+		qWarning( "%s:%d: Cannot invoke tr() like this",
+			  (const char *) yyFileName, yyLineNo );
+	    break;
+	case Tok_Gulbrandsen:
+	    // at top level?
+	    if ( yyBraceDepth == (int) namespaces.count() && yyParenDepth == 0 )
+		functionContext = prefix;
+	    yyTok = getToken();
+	    break;
+	case Tok_RightBrace:
+	case Tok_Semicolon:
+	    if ( yyBraceDepth >= 0 &&
+		 yyBraceDepth + 1 == (int) namespaces.count() )
+		namespaces.remove( namespaces.fromLast() );
+	    if ( yyBraceDepth == (int) namespaces.count() ) {
+		if ( missing_Q_OBJECT ) {
+		    if ( needs_Q_OBJECT.contains(functionContext) ) {
+			qWarning( "%s:%d: Class '%s' lacks Q_OBJECT macro",
+				  (const char *) yyFileName, yyLineNo,
+				  (const char *) functionContext );
+		    } else {
+			lacks_Q_OBJECT.insert( functionContext, 0 );
+		    }
+		}
+		functionContext = defaultContext;
+		missing_Q_OBJECT = FALSE;
+	    }
+	    yyTok = getToken();
+	    break;
+	default:
+	    yyTok = getToken();
+	}
+    }
+
+    if ( yyBraceDepth != 0 )
+	fprintf( stderr,
+		 "%s: Unbalanced braces in C++ code (or abuse of the C++"
+		  " preprocessor)\n",
+		  (const char *) yyFileName );
+    if ( yyParenDepth != 0 )
+	fprintf( stderr,
+		 "%s: Unbalanced parentheses in C++ code (or abuse of the C++"
+		 " preprocessor)\n",
+		 (const char *) yyFileName );
+}
+
+void fetchtr_cpp( const char *fileName, MetaTranslator *tor,
+		  const char *defaultContext, bool mustExist )
+{
+    yyInFile = fopen( fileName, "r" );
+    if ( yyInFile == 0 ) {
+	if ( mustExist )
+	    fprintf( stderr,
+		     "lupdate error: Cannot open C++ source file '%s': %s\n",
+		     fileName, strerror(errno) );
+	return;
+    }
+
+    startTokenizer( fileName, getCharFromFile );
+    parse( tor, 0, defaultContext );
+    fclose( yyInFile );
+}
+
+/*
+  In addition to C++, we support Qt Designer UI files.
+*/
+
+/*
+  Fetches tr() calls in C++ code in UI files (inside "<function>"
+  tag). This mechanism is obsolete.
+*/
+void fetchtr_inlined_cpp( const char *fileName, const QString& in,
+			  MetaTranslator *tor, const char *context )
+{
+    yyInStr = in;
+    startTokenizer( fileName, getCharFromString );
+    parse( tor, context, 0 );
+    yyInStr = QString::null;
+}
+
+class UiHandler : public QXmlDefaultHandler
+{
+public:
+    UiHandler( MetaTranslator *translator, const char *fileName )
+	: tor( translator ), fname( fileName ), comment( "" ) { }
+
+    virtual bool startElement( const QString& namespaceURI,
+			       const QString& localName, const QString& qName,
+			       const QXmlAttributes& atts );
+    virtual bool endElement( const QString& namespaceURI,
+			     const QString& localName, const QString& qName );
+    virtual bool characters( const QString& ch );
+    virtual bool fatalError( const QXmlParseException& exception );
+
+private:
+    void flush();
+
+    MetaTranslator *tor;
+    QCString fname;
+    QString context;
+    QString source;
+    QString comment;
+
+    QString accum;
+};
+
+bool UiHandler::startElement( const QString& /* namespaceURI */,
+			      const QString& /* localName */,
+			      const QString& qName,
+			      const QXmlAttributes& atts )
+{
+    if ( qName == QString("item") ) {
+	flush();
+	if ( !atts.value(QString("text")).isEmpty() )
+	    source = atts.value( QString("text") );
+    } else if ( qName == QString("string") ) {
+	flush();
+    }
+    accum.truncate( 0 );
+    return TRUE;
+}
+
+bool UiHandler::endElement( const QString& /* namespaceURI */,
+			    const QString& /* localName */,
+			    const QString& qName )
+{
+    accum.replace( QRegExp(QString("\r\n")), "\n" );
+
+    if ( qName == QString("class") ) {
+	if ( context.isEmpty() )
+	    context = accum;
+    } else if ( qName == QString("string") ) {
+	source = accum;
+    } else if ( qName == QString("comment") ) {
+	comment = accum;
+	flush();
+    } else if ( qName == QString("function") ) {
+	fetchtr_inlined_cpp( (const char *) fname, accum, tor,
+			     context.latin1() );
+    } else {
+	flush();
+    }
+    return TRUE;
+}
+
+bool UiHandler::characters( const QString& ch )
+{
+    accum += ch;
+    return TRUE;
+}
+
+bool UiHandler::fatalError( const QXmlParseException& exception )
+{
+    QString msg;
+    msg.sprintf( "Parse error at line %d, column %d (%s).",
+		 exception.lineNumber(), exception.columnNumber(),
+		 exception.message().latin1() );
+    fprintf( stderr, "XML error: %s\n", msg.latin1() );
+    return FALSE;
+}
+
+void UiHandler::flush()
+{
+    if ( !context.isEmpty() && !source.isEmpty() )
+	tor->insert( MetaTranslatorMessage(context.utf8(), source.utf8(),
+					   comment.utf8(), QString::null,
+					   TRUE) );
+    source.truncate( 0 );
+    comment.truncate( 0 );
+}
+
+void fetchtr_ui( const char *fileName, MetaTranslator *tor,
+		 const char * /* defaultContext */, bool mustExist )
+{
+    QFile f( fileName );
+    if ( !f.open(IO_ReadOnly) ) {
+	if ( mustExist )
+	    fprintf( stderr, "lupdate error: cannot open UI file '%s': %s\n",
+		     fileName, strerror(errno) );
+	return;
+    }
+
+    QTextStream t( &f );
+    QXmlInputSource in( t );
+    QXmlSimpleReader reader;
+    reader.setFeature( "http://xml.org/sax/features/namespaces", FALSE );
+    reader.setFeature( "http://xml.org/sax/features/namespace-prefixes", TRUE );
+    reader.setFeature( "http://trolltech.com/xml/features/report-whitespace"
+		       "-only-CharData", FALSE );
+    QXmlDefaultHandler *hand = new UiHandler( tor, fileName );
+    reader.setContentHandler( hand );
+    reader.setErrorHandler( hand );
+
+    if ( !reader.parse(in) )
+	fprintf( stderr, "%s: Parse error in UI file\n", fileName );
+    reader.setContentHandler( 0 );
+    reader.setErrorHandler( 0 );
+    delete hand;
+    f.close();
+}