fetchtr.cpp

来自「奇趣公司比较新的qt/emd版本」· C++ 代码 · 共 1,105 行 · 第 1/3 页

                            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 (!yyCodecForSource) {
							if ( yyParsingUtf8 && yyCh >= 0x80 && !quiet) {
								qWarning( "%s:%d: Non-ASCII character detected in trUtf8 string",
										  (const char *) yyFileName, yyLineNo );
								quiet = true;
							}
							// common case: optimized
							if ( yyStringLen < sizeof(yyString) - 1 )
								yyString[yyStringLen++] = (char) yyCh;
							yyCh = getChar();
						} else {
							QByteArray originalBytes;
							while ( yyCh != EOF && yyCh != '\n' && yyCh != '"' && yyCh != '\\' ) {
								if ( yyParsingUtf8 && yyCh >= 0x80 && !quiet) {
									qWarning( "%s:%d: Non-ASCII character detected in trUtf8 string",
											(const char *) yyFileName, yyLineNo );
									quiet = true;
								}
								originalBytes += (char)yyCh;
								yyCh = getChar();
							}

							QString unicodeStr = yyCodecForSource->toUnicode(originalBytes);
							QByteArray convertedBytes;

							if (!yyCodecForTr->canEncode(unicodeStr) && !quiet) {
								qWarning( "%s:%d: Cannot convert C++ string from %s to %s",
										  (const char *) yyFileName, yyLineNo, yyCodecForSource->name().constData(),
										  yyCodecForTr->name().constData() );
								quiet = true;
							}
							convertedBytes = yyCodecForTr->fromUnicode(unicodeStr);

							size_t len = qMin((size_t)convertedBytes.size(), sizeof(yyString) - yyStringLen - 1);
							memcpy(yyString + yyStringLen, convertedBytes.constData(), len);
							yyStringLen += len;
						}
                    }
                }
                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 '{':
                if (yyBraceDepth == 0)
                    yyBraceLineNo = yyCurLineNo;
                yyBraceDepth++;
                yyCh = getChar();
                return Tok_LeftBrace;
            case '}':
                if (yyBraceDepth == 0)
                    yyBraceLineNo = yyCurLineNo;
                yyBraceDepth--;
                yyCh = getChar();
                return Tok_RightBrace;
            case '(':
                if (yyParenDepth == 0)
                    yyParenLineNo = yyCurLineNo;
                yyParenDepth++;
                yyCh = getChar();
                return Tok_LeftParen;
            case ')':
                if (yyParenDepth == 0)
                    yyParenLineNo = yyCurLineNo;
                yyParenDepth--;
                yyCh = getChar();
                return Tok_RightParen;
            case ',':
                yyCh = getChar();
                return Tok_Comma;
            case ';':
                yyCh = getChar();
                return Tok_Semicolon;
            case '0':
            case '1':
            case '2':
            case '3':
            case '4':
            case '5':
            case '6':
            case '7':
            case '8':
            case '9':
                {
                    QByteArray ba;
                    ba+=yyCh;
                    yyCh = getChar();
                    bool hex = yyCh == 'x';
                    if ( hex ) {
                        ba+=yyCh;
                        yyCh = getChar();
                    }
                    while ( (hex ? isxdigit(yyCh) : isdigit(yyCh)) ) {
                        ba+=yyCh;
                        yyCh = getChar();
                    }
                    bool ok;
                    yyInteger = ba.toLongLong(&ok);
                    if (ok) return Tok_Integer;
                    break;
                }
            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( QByteArray *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 || strcmp(yyIdent, "QCoreApplication") == 0) {
            yyTok = getToken();
            if ( yyTok == Tok_Gulbrandsen )
                yyTok = getToken();
        }
        if (strcmp(yyIdent, "UnicodeUTF8") == 0) {
            *utf8 = true;
            yyTok = getToken();
        } else if (strcmp(yyIdent, "DefaultCodec") == 0) {
            *utf8 = false;
            yyTok = getToken();
        } else {
            return false;
        }
        return true;
    } else {
        return false;
    }
}

static bool matchInteger( qlonglong *number)
{
    bool matches = (yyTok == Tok_Integer);
    if (matches) {
        yyTok = getToken();
        *number = yyInteger;
    }
    return matches;
}

static bool matchStringOrNull(QByteArray *s)
{
    bool matches = matchString(s);
    qlonglong num = 0;
    if (!matches) matches = matchInteger(&num);
    return matches && num == 0;
}

/*
 * match any expression that can return a number, which can be
 * 1. Literal number (e.g. '11')
 * 2. simple identifier (e.g. 'm_count')
 * 3. simple function call (e.g. 'size()' )
 * 4. function call on an object (e.g. 'list.size()')
 * 5. function call on an object (e.g. 'list->size()')
 *
 * Other cases:
 * size(2,4)
 * list().size()
 * list(a,b).size(2,4)
 * etc...
 */
static bool matchExpression()
{
    if (match(Tok_Integer)) {
        return true;
    }

    int parenlevel = 0;
    while (match(Tok_Ident) || parenlevel > 0) {
        if (yyTok == Tok_RightParen) {
            if (parenlevel == 0) break;
            --parenlevel;
            yyTok = getToken();
        } else if (yyTok == Tok_LeftParen) {
            yyTok = getToken();
            if (yyTok == Tok_RightParen) {
                yyTok = getToken();
            } else {
                ++parenlevel;
            }
        } else if (yyTok == Tok_Ident) {
            continue;
        } else if (yyTok == Tok_Arrow) {
            yyTok = getToken();
        } else if (parenlevel == 0) {
            return false;
        }
    }
    return true;
}

static QByteArray getFullyQualifiedClassName(const QList<QByteArray> &classes, const QStringList &namespaces, 
                                             const QByteArray &ident, bool hasPrefix = false)
{
    QByteArray context = ident;
    if (context.endsWith("::"))
        context.chop(2);
    int n = namespaces.count() - 1; 
    if (!context.startsWith("::")) {
        for ( ; n >= 0; --n) {
            QByteArray ns;
            for (int i = 0; i <= n; ++i) {
                ns+=namespaces[i].toAscii() + "::";
            }
            if (classes.indexOf(ns + context) != -1) {
                context = ns + context;
                break;
            }
        }
        if (!hasPrefix && n == -1 && namespaces.count()) {
            context = namespaces.join(QLatin1String("::")).toLatin1() + "::" + context;
        }
    } else {
        context.remove(0, 2);
    }
    return context;
}


static void parse( MetaTranslator *tor, const char *initialContext, const char *defaultContext )
{
    QMap<QByteArray, QByteArray> qualifiedContexts;
    QStringList namespaces;
    QList<QByteArray> classes;
    QByteArray context;
    QByteArray text;
    QByteArray com;
    QByteArray functionContext = initialContext;
    QByteArray prefix;
#ifdef DIAGNOSE_RETRANSLATABILITY
    QByteArray functionName;
#endif
    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 == 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 (namespaces.count() > 0) {
                    functionContext.prepend( namespaces.join(QLatin1String("::")).toAscii().append("::") );
                }
                classes.append( functionContext );

                if ( yyTok == Tok_Colon ) {
                    missing_Q_OBJECT = true;
                    // Skip any token until '{' since lupdate might do things wrong if it finds
                    // a '::' token here.
                    do {
                        yyTok = getToken();
                    } while (yyTok != Tok_LeftBrace && yyTok != Tok_Eof);
                } else {
                    functionContext = defaultContext;
                }
            }
            break;
        case Tok_namespace:
            yyTok = getToken();
            if ( yyTok == Tok_Ident ) {
                QByteArray ns = yyIdent;
                yyTok = getToken();
                if ( yyTok == Tok_LeftBrace &&
                     yyBraceDepth == namespaces.count() + 1 )
                    namespaces.append( QString::fromLatin1(ns.constData()) );
            }
            break;
        case Tok_tr:
        case Tok_trUtf8:
            utf8 = ( yyTok == Tok_trUtf8 );