replace.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 123 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/


#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "vi.h"
#include "keys.h"

/*
 * ReplaceChar - replace an individual character
 */
int ReplaceChar( void )
{
    int         key,start,end,i,ai,rc;
    char        *buff;
    bool        redrawAll;

    if( i = ModificationTest() ) {
        return( i );
    }
    UpdateCurrentStatus( CSTATUS_REPLACECHAR );
    key = GetNextEvent( FALSE );
    if( key == VI_KEY( ESC ) ) {
        return( ERR_NO_ERR );
    }
    if( CurrentLine->len == 0 ) {
        return( ERR_NO_CHAR_TO_REPLACE );
    }
    CurrentLineReplaceUndoStart();
    CurrentLineReplaceUndoEnd( key != VI_KEY( ENTER ) );

    if( key == VI_KEY( ENTER ) ) {

        buff = StaticAlloc();
        GetAutoIndentAmount( buff, 0, FALSE );
        CurrentLine->data[ CurrentColumn-1 ] = (char) 1;
        SaveCurrentFilePos();
        SplitUpLine( CurrentLineNumber );
        RestoreCurrentFilePos();
        EndUndoGroup( UndoStack );
        GoToLineNoRelCurs( CurrentLineNumber + 1 );
        GoToColumnOnCurrentLine( 1 );
        if( EditFlags.AutoIndent ) {
            ai = strlen( buff );
            if( ai + CurrentLine->len < MaxLine ) {
                GetCurrentLine();
                i = 0;
                while( isspace( WorkLine->data[i] ) ) {
                    i++;
                }
                strcat( buff, &(WorkLine->data[i]) );
                i = strlen( buff );
                memcpy( WorkLine->data, buff, i + 1 );
                WorkLine->len = i;
                ReplaceCurrentLine();
            }
            rc = GoToColumn( ai+1, CurrentLine->len );
            if( rc == ERR_NO_SUCH_COLUMN ) {
                GoToColumnOK( ai );
            }
        }
        StaticFree( buff );
        DCDisplayAllLines();

    } else {
        if( key == VI_KEY( TAB ) ) {
            key = '\t';
        }
        GetCurrentLine();
        start = CurrentColumn-1;
        end = start+(int) GetRepeatCount();
        if( end > WorkLine->len ) {
            end = WorkLine->len;
        }
        redrawAll = FALSE;
        for( i=start;i<end;i++ ) {
            if( !redrawAll && SSKillsFlags( WorkLine->data[ i ] ) ) {
                redrawAll = TRUE;
            }
            WorkLine->data[ i ] = (char) key;
        }
        redrawAll |= SSKillsFlags( key );
        DisplayWorkLine( redrawAll );
        ReplaceCurrentLine();
        GoToColumnOK( CurrentColumn );

    }

    EditFlags.Dotable=TRUE;
    return( ERR_NO_ERR );

} /* ReplaceChar */