C++ LINE_READER类代码示例

bool SCH_LABEL::Load( LINE_READER& aLine, wxString& aErrorMsg )
{
    char      Name1[256];
    char      Name2[256];
    char      Name3[256];
    int       thickness = 0, size = 0, orient = 0;

    Name1[0] = 0; Name2[0] = 0; Name3[0] = 0;

    char*     sline = (char*) aLine;

    while( ( *sline != ' ' ) && *sline )
        sline++;

    // sline points the start of parameters
    int ii = sscanf( sline, "%s %d %d %d %d %s %s %d", Name1, &m_Pos.x, &m_Pos.y,
                     &orient, &size, Name2, Name3, &thickness );

    if( ii < 4 )
    {
        aErrorMsg.Printf( wxT( "Eeschema file label load error at line %d" ),
                          aLine.LineNumber() );
        return false;
    }

    if( !aLine.ReadLine() )
    {
        aErrorMsg.Printf( wxT( "Eeschema file label load error atline %d" ),
                          aLine.LineNumber() );
        return false;
    }

    if( size == 0 )
        size = DEFAULT_SIZE_TEXT;

    char* text = strtok( (char*) aLine, "\n\r" );

    if( text == NULL )
    {
        aErrorMsg.Printf( wxT( "Eeschema file label load error at line %d" ),
                          aLine.LineNumber() );
        return false;
    }

    m_Text = FROM_UTF8( text );
    m_Size.x = m_Size.y = size;
    SetOrientation( orient );

    if( isdigit( Name3[0] ) )
    {
        thickness = atol( Name3 );
        m_Bold = ( thickness != 0 );
        m_Thickness = m_Bold ? GetPenSizeForBold( size ) : 0;
    }

    if( stricmp( Name2, "Italic" ) == 0 )
        m_Italic = 1;

    return true;
}

bool BITMAP_BASE::LoadData( LINE_READER& aLine, wxString& aErrorMsg )
{
    wxMemoryOutputStream stream;
    char* line;

    while( true )
    {
        if( !aLine.ReadLine() )
        {
            aErrorMsg = wxT("Unexpected end of data");
            return false;
        }

        line = aLine.Line();

        if( strncasecmp( line, "EndData", 4 ) == 0 )
        {
            // all the PNG date is read.
            // We expect here m_image and m_bitmap are void
            m_image = new wxImage();
            wxMemoryInputStream istream( stream );
            m_image->LoadFile( istream, wxBITMAP_TYPE_PNG );
            m_bitmap = new wxBitmap( *m_image );
            break;
        }

        // Read PNG data, stored in hexadecimal,
        // each byte = 2 hexadecimal digits and a space between 2 bytes
        // and put it in memory stream buffer
        int len = strlen( line );

        for( ; len > 0; len -= 3, line += 3 )
        {
            int value = 0;

            if( sscanf( line, "%X", &value ) == 1 )
                stream.PutC( (char) value );
            else
                break;
        }
    }

    return true;
}

bool SCH_BITMAP::Load( LINE_READER& aLine, wxString& aErrorMsg )
{
    char* line = aLine.Line();

    if( strncasecmp( line, "$Bitmap", 7 ) != 0 )
    {
        aErrorMsg.Printf( wxT( "Eeschema file bitmap image load error at line %d, aborted" ),
                          aLine.LineNumber() );
        aErrorMsg << wxT( "\n" ) << FROM_UTF8( (char*) aLine );
        return false;
    }

    for( ; ; )
    {
        if( !aLine.ReadLine() )
            return false;

        line = aLine.Line();

        if( strncasecmp( line, "Pos", 3 ) == 0 )
        {
            sscanf( line + 3, "%d %d", &m_pos.x, &m_pos.y );
            continue;
        }

        if( strncasecmp( line, "Scale", 5 ) == 0 )
        {
            double scale = 1.0;
            sscanf( line + 5, "%lf", &scale );
            m_image->SetScale( scale );
            continue;
        }

        if( strncasecmp( line, "Data", 4 ) == 0 )
        {
            m_image->LoadData( aLine, aErrorMsg );
        }

        if( strncasecmp( line, "$EndBitmap", 4 ) == 0 )
            break;
    }

    return true;
}

bool SCH_BUS_ENTRY_BASE::Load( LINE_READER& aLine, wxString& aErrorMsg,
                               SCH_ITEM **out )
{
    char Name1[256];
    char Name2[256];
    char* line = (char*) aLine;
    *out = NULL;

    while( (*line != ' ' ) && *line )
        line++;

    if( sscanf( line, "%255s %255s", Name1, Name2 ) != 2  )
    {
        aErrorMsg.Printf( wxT( "Eeschema file bus entry load error at line %d" ),
                          aLine.LineNumber() );
        aErrorMsg << wxT( "\n" ) << FROM_UTF8( (char*) aLine );
        return false;
    }

    SCH_BUS_ENTRY_BASE *this_new;
    if( Name1[0] == 'B' )
        this_new = new SCH_BUS_BUS_ENTRY;
    else
        this_new = new SCH_BUS_WIRE_ENTRY;
    *out = this_new;

    if( !aLine.ReadLine() || sscanf( (char*) aLine, "%d %d %d %d ",
                &this_new->m_pos.x, &this_new->m_pos.y,
                &this_new->m_size.x, &this_new->m_size.y ) != 4 )
    {
        aErrorMsg.Printf( wxT( "Eeschema file bus entry load error at line %d" ),
                          aLine.LineNumber() );
        aErrorMsg << wxT( "\n" ) << FROM_UTF8( (char*) aLine );
        return false;
    }

    this_new->m_size.x -= this_new->m_pos.x;
    this_new->m_size.y -= this_new->m_pos.y;

    return true;
}

bool SCH_BUS_ENTRY::Load( LINE_READER& aLine, wxString& aErrorMsg )
{
    char Name1[256];
    char Name2[256];
    char* line = (char*) aLine;

    while( (*line != ' ' ) && *line )
        line++;

    if( sscanf( line, "%s %s", Name1, Name2 ) != 2  )
    {
        aErrorMsg.Printf( wxT( "Eeschema file bus entry load error at line %d" ),
                          aLine.LineNumber() );
        aErrorMsg << wxT( "\n" ) << FROM_UTF8( (char*) aLine );
        return false;
    }

    m_Layer = LAYER_WIRE;

    if( Name1[0] == 'B' )
        m_Layer = LAYER_BUS;

    if( !aLine.ReadLine() || sscanf( (char*) aLine, "%d %d %d %d ", &m_pos.x, &m_pos.y,
                                      &m_size.x, &m_size.y ) != 4 )
    {
        aErrorMsg.Printf( wxT( "Eeschema file bus entry load error at line %d" ),
                          aLine.LineNumber() );
        aErrorMsg << wxT( "\n" ) << FROM_UTF8( (char*) aLine );
        return false;
    }

    m_size.x -= m_pos.x;
    m_size.y -= m_pos.y;

    return true;
}

bool SCH_SHEET::Load( LINE_READER& aLine, wxString& aErrorMsg )
{
    int              fieldNdx, size;
    SCH_SHEET_PIN*   sheetPin;
    char*            ptcar;

    SetTimeStamp( GetNewTimeStamp() );

    // sheets are added to the GetDrawItems() like other schematic components.
    // however, in order to preserve the hierarchy (through m_Parent pointers),
    // a duplicate of the sheet is added to m_SubSheet array.
    // must be a duplicate, references just work for a two-layer structure.
    // this is accomplished through the Sync() function.

    if( ((char*)aLine)[0] == '$' )   // line should be "$Sheet"
    {
        if( !aLine.ReadLine() )
        {
            aErrorMsg.Printf( wxT( "Read File Error" ) );
            return false;
        }
    }

    /* Next line: must be "S xx yy nn mm" with xx, yy = sheet position
     *  ( upper left corner  ) et nn,mm = sheet size */
    if( ( sscanf( &((char*)aLine)[1], "%d %d %d %d",
                  &m_pos.x, &m_pos.y, &m_size.x, &m_size.y ) != 4 )
        || ( ((char*)aLine)[0] != 'S' ) )
    {
        aErrorMsg.Printf( wxT( " ** Eeschema file sheet struct error at line %d, aborted\n" ),
                          aLine.LineNumber() );

        aErrorMsg << FROM_UTF8( ((char*)aLine) );
        return false;
    }

    /* Read fields */
    for( ; ; ) /* Analysis of lines "Fn" text. */
    {
        if( !aLine.ReadLine() )
            return false;

        if( ((char*)aLine)[0] == 'U' )
        {
            sscanf( ((char*)aLine) + 1, "%lX", &m_TimeStamp );
            if( m_TimeStamp == 0 )  // zero is not unique!
                SetTimeStamp( GetNewTimeStamp() );
            continue;
        }

        if( ((char*)aLine)[0] != 'F' )
            break;

        sscanf( ((char*)aLine) + 1, "%d", &fieldNdx );

        /* Read the field:
         * If fieldNdx> = 2: Fn "text" t s posx posy
         * If F0 "text" for SheetName
         * F1 and "text" for filename
         */
        ptcar = ((char*)aLine);

        while( *ptcar && ( *ptcar != '"' ) )
            ptcar++;

        if( *ptcar != '"' )
        {
            aErrorMsg.Printf( wxT( "Eeschema file sheet label F%d at line %d, aborted\n" ),
                              fieldNdx, aLine.LineNumber() );
            aErrorMsg << FROM_UTF8( (char*) aLine );
            return false;
        }

        wxString sheetName;
        ptcar += ReadDelimitedText( &sheetName, ptcar );

        if( *ptcar == 0 )
        {
            aErrorMsg.Printf( wxT( "Eeschema file sheet field F at line %d, aborted\n" ),
                              aLine.LineNumber() );
            aErrorMsg << FROM_UTF8( (char*) aLine );
            return false;
        }

        if( ( fieldNdx == 0 ) || ( fieldNdx == 1 ) )
        {
            if( sscanf( ptcar, "%d", &size ) != 1 )
            {
                aErrorMsg.Printf( wxT( "Eeschema file sheet Label error line %d, aborted\n" ),
                                  aLine.LineNumber() );

                aErrorMsg << FROM_UTF8( (char*) aLine );
            }

            if( size == 0 )
                size = DEFAULT_SIZE_TEXT;

            if( fieldNdx == 0 )
            {
                m_name     = sheetName;
//.........这里部分代码省略.........

bool LIB_FIELD::Load( LINE_READER& aLineReader, wxString& errorMsg )
{
    int     cnt;
    char    textOrient;
    char    textVisible;
    char    textHJustify;
    char    textVJustify[256];

    char*   line = (char*) aLineReader;
    char*   limit = line + aLineReader.Length();

    if( sscanf( line + 1, "%d", &m_id ) != 1 || m_id < 0 )
    {
        errorMsg = wxT( "invalid field header" );
        return false;
    }

    // Caller did a strtok(), which inserts a nul, so next few bytes are ugly:
    // digit(s), a nul, some whitespace, then a double quote.
    while( line < limit && *line != '"' )
        line++;

    if( line == limit )
        return false;

    line += ReadDelimitedText( &m_Text, line );

    // Doctor the *.lib file field which has a "~" in blank fields.  New saves will
    // not save like this, and eventually these two lines can be removed.
    if( m_Text.size()==1  &&  m_Text[0]==wxChar( '~' ) )
        m_Text.clear();

    memset( textVJustify, 0, sizeof( textVJustify ) );

    cnt = sscanf( line, " %d %d %d %c %c %c %s", &m_Pos.x, &m_Pos.y, &m_Size.y,
                  &textOrient, &textVisible, &textHJustify, textVJustify );

    if( cnt < 5 )
    {
        errorMsg.Printf( wxT( "field %d does not have the correct number of parameters" ),
                         m_id );
        return false;
    }

    m_Size.x = m_Size.y;

    if( textOrient == 'H' )
        m_Orient = TEXT_ORIENT_HORIZ;
    else if( textOrient == 'V' )
        m_Orient = TEXT_ORIENT_VERT;
    else
    {
        errorMsg.Printf( wxT( "field %d text orientation parameter <%c> is not valid" ),
                         textOrient );
        return false;
    }

    if( textVisible == 'V' )
        m_Attributs &= ~TEXT_NO_VISIBLE;
    else if ( textVisible == 'I' )
        m_Attributs |= TEXT_NO_VISIBLE;
    else
    {
        errorMsg.Printf( wxT( "field %d text visible parameter <%c> is not valid" ),
                         textVisible );
        return false;
    }

    m_HJustify = GR_TEXT_HJUSTIFY_CENTER;
    m_VJustify = GR_TEXT_VJUSTIFY_CENTER;

    if( cnt >= 6 )
    {
        if( textHJustify == 'C' )
            m_HJustify = GR_TEXT_HJUSTIFY_CENTER;
        else if( textHJustify == 'L' )
            m_HJustify = GR_TEXT_HJUSTIFY_LEFT;
        else if( textHJustify == 'R' )
            m_HJustify = GR_TEXT_HJUSTIFY_RIGHT;
        else
        {
            errorMsg.Printf(
                wxT( "field %d text horizontal justification parameter <%c> is not valid" ),
                textHJustify );
            return false;
        }

        if( textVJustify[0] == 'C' )
            m_VJustify = GR_TEXT_VJUSTIFY_CENTER;
        else if( textVJustify[0] == 'B' )
            m_VJustify = GR_TEXT_VJUSTIFY_BOTTOM;
        else if( textVJustify[0] == 'T' )
            m_VJustify = GR_TEXT_VJUSTIFY_TOP;
        else
        {
            errorMsg.Printf(
                wxT( "field %d text vertical justification parameter <%c> is not valid" ),
                textVJustify[0] );
            return false;
        }
//.........这里部分代码省略.........

bool SCH_SHEET_PIN::Load( LINE_READER& aLine, wxString& aErrorMsg )
{
    int     size;
    char    number[256];
    char    name[256];
    char    connectType[256];
    char    sheetSide[256];
    char*   line = aLine.Line();
    char*   cp;

    static const char delims[] = " \t";

    // Read coordinates.
    // D( printf( "line: \"%s\"\n", line );)

    cp = strtok( line, delims );

    strncpy( number, cp, sizeof(number) );
    number[sizeof(number)-1] = 0;

    cp += strlen( number ) + 1;

    cp += ReadDelimitedText( name, cp, sizeof(name) );

    cp = strtok( cp, delims );
    strncpy( connectType, cp, sizeof(connectType) );
    connectType[sizeof(connectType)-1] = 0;

    cp = strtok( NULL, delims );
    strncpy( sheetSide, cp, sizeof(sheetSide) );
    sheetSide[sizeof(sheetSide)-1] = 0;

    cp += strlen( sheetSide ) + 1;

    int r = sscanf( cp, "%d %d %d", &m_Pos.x, &m_Pos.y, &size );
    if( r != 3 )
    {
        aErrorMsg.Printf( wxT( "Eeschema file sheet hierarchical label error at line %d.\n" ),
                          aLine.LineNumber() );

        aErrorMsg << FROM_UTF8( line );
        return false;
    }

    m_Text = FROM_UTF8( name );

    if( size == 0 )
        size = GetDefaultTextSize();

    m_Size.x = m_Size.y = size;

    switch( connectType[0] )
    {
    case 'I':
        m_shape = NET_INPUT;
        break;

    case 'O':
        m_shape = NET_OUTPUT;
        break;

    case 'B':
        m_shape = NET_BIDI;
        break;

    case 'T':
        m_shape = NET_TRISTATE;
        break;

    case 'U':
        m_shape = NET_UNSPECIFIED;
        break;
    }

    switch( sheetSide[0] )
    {
    case 'R' : /* pin on right side */
        SetEdge( 1 );
        break;

    case 'T' : /* pin on top side */
        SetEdge( 2 );
        break;

    case 'B' : /* pin on bottom side */
        SetEdge( 3 );
        break;

    case 'L' : /* pin on left side */
    default  :
        SetEdge( 0 );
        break;
    }

    return true;
}

bool SCH_TEXT::Load( LINE_READER& aLine, wxString& aErrorMsg )
{
    char      Name1[256];
    char      Name2[256];
    char      Name3[256];
    int       thickness = 0, size = 0, orient = 0;

    Name1[0] = 0; Name2[0] = 0; Name3[0] = 0;

    char*     sline = (char*) aLine;

    while( ( *sline != ' ' ) && *sline )
        sline++;

    // sline points the start of parameters
    int ii = sscanf( sline, "%255s %d %d %d %d %255s %255s %d", Name1, &m_Pos.x, &m_Pos.y,
                     &orient, &size, Name2, Name3, &thickness );

    if( ii < 4 )
    {
        aErrorMsg.Printf( wxT( "Eeschema file text load error at line %d" ),
                          aLine.LineNumber() );
        return false;
    }

    if( !aLine.ReadLine() )
    {
        aErrorMsg.Printf( wxT( "Eeschema file text load error at line %d" ),
                          aLine.LineNumber() );
        return false;
    }

    if( size == 0 )
        size = GetDefaultTextSize();

    char* text = strtok( (char*) aLine, "\n\r" );

    if( text == NULL )
    {
        aErrorMsg.Printf( wxT( "Eeschema file text load error at line %d" ),
                          aLine.LineNumber() );
        return false;
    }

    wxString val = FROM_UTF8( text );

    for( ; ; )
    {
        int i = val.find( wxT( "\\n" ) );

        if( i == wxNOT_FOUND )
            break;

        val.erase( i, 2 );
        val.insert( i, wxT( "\n" ) );
    }

    m_Text = val;
    m_Size.x = m_Size.y = size;
    SetOrientation( orient );

    if( isdigit( Name3[0] ) )
    {
        thickness = atol( Name3 );
        m_Bold = ( thickness != 0 );
        m_Thickness = m_Bold ? GetPenSizeForBold( size ) : 0;
    }

    if( strnicmp( Name2, "Italic", 6 ) == 0 )
        m_Italic = 1;

    return true;
}