460 lines
9.7 KiB
C
460 lines
9.7 KiB
C
/* $Id$
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Part of SWI-Prolog
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Author: Jan Wielemaker and Matt Lilley
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E-mail: J.Wielemaker@cs.vu.nl
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WWW: http://www.swi-prolog.org
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Copyright (C): 2010, VU University, Amsterdam
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Copyright (C): 2009, SCIENTIFIC SOFTWARE AND SYSTEMS LIMITED
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define WINDOWS_LEAN_AND_MEAN 1
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#if (_MSC_VER >= 1300)
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#include <winsock2.h> /* Needed on VC8 */
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#include <windows.h>
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#else
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#include <windows.h> /* Needed for MSVC 5&6 */
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#include <winsock2.h>
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#endif
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#include "pl-incl.h"
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#define ANSI_MAGIC (0x734ab9de)
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#define ANSI_BUFFER_SIZE (256)
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#define ANSI_MAX_ARGC (10)
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typedef enum
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{ CMD_INITIAL = 0,
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CMD_ESC,
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CMD_ANSI
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} astate;
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typedef struct
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{ int magic;
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HANDLE hConsole;
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IOSTREAM *pStream;
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void *saved_handle;
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wchar_t buffer[ANSI_BUFFER_SIZE];
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size_t buffered;
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int argv[ANSI_MAX_ARGC];
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int argc;
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int argstat;
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astate cmdstat; /* State for sequence processing */
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WORD def_attr; /* Default attributes */
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} ansi_stream;
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static IOFUNCTIONS con_functions;
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static IOFUNCTIONS *saved_functions;
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static void
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Message(const char *fm, ...)
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{ char buf[1024];
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va_list(args);
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return;
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va_start(args, fm);
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vsprintf(buf, fm, args);
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MessageBox(NULL, buf, "SWI-Prolog", MB_OK|MB_TASKMODAL);
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va_end(args);
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}
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static int
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flush_ansi(ansi_stream *as)
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{ size_t written = 0;
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while ( written < as->buffered )
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{ BOOL rc;
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DWORD done;
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rc = WriteConsoleW(as->hConsole,
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&as->buffer[written],
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(DWORD)(as->buffered-written),
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&done,
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NULL);
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if ( rc )
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{ written += done;
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} else
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{ as->buffered = 0;
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return -1;
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}
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}
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as->buffered = 0;
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return 0;
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}
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static int
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send_ansi(ansi_stream *as, int chr)
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{ as->buffer[as->buffered++] = chr;
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if ( as->buffered == ANSI_BUFFER_SIZE ||
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(as->pStream->flags & SIO_NBUF) ||
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(chr == '\n' && (as->pStream->flags & SIO_LBUF)) )
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return flush_ansi(as);
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return 0;
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}
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#define FG_MASK (FOREGROUND_RED|FOREGROUND_BLUE|FOREGROUND_GREEN)
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#define BG_MASK (BACKGROUND_RED|BACKGROUND_BLUE|BACKGROUND_GREEN)
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static void
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set_ansi_attributes(ansi_stream *as)
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{ CONSOLE_SCREEN_BUFFER_INFO info;
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if ( GetConsoleScreenBufferInfo(as->hConsole, &info) )
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{ int i;
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WORD attr = info.wAttributes;
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for(i=0; i < as->argc; i++)
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{ switch( as->argv[i] )
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{ case 0:
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attr = as->def_attr;
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break;
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case 1:
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attr |= FOREGROUND_INTENSITY;
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break;
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case 22:
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attr &= ~FOREGROUND_INTENSITY;
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break;
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default:
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if ( as->argv[i] >= 30 && as->argv[i] <= 39 )
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{ int fg = as->argv[i] - 30;
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attr &= ~FG_MASK;
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if ( fg == 9 ) /* default */
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{ attr |= (as->def_attr & FG_MASK);
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} else
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{ if ( fg % 2 == 1 )
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attr |= FOREGROUND_RED;
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if ( fg >= 4 )
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attr |= FOREGROUND_BLUE;
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if ( (fg == 2) || (fg == 3) || (fg == 6) || (fg == 7) )
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attr |= FOREGROUND_GREEN;
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}
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} else if ( as->argv[i] >= 40 && as->argv[i] <= 49 )
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{ int bg = as->argv[i] - 40;
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attr &= ~BG_MASK;
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if ( bg == 9 ) /* default */
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{ attr |= (as->def_attr & BG_MASK);
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} else
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{ if ( bg % 2 == 1 )
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attr |= BACKGROUND_RED;
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if ( bg >= 4 )
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attr |= BACKGROUND_BLUE;
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if ( (bg == 2) || (bg == 3) || (bg == 6) || (bg == 7) )
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attr |= BACKGROUND_GREEN;
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}
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}
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}
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}
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if ( attr != info.wAttributes )
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{ flush_ansi(as);
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SetConsoleTextAttribute(as->hConsole, attr);
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}
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}
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}
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static void
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rlc_need_arg(ansi_stream *as, int arg, int def)
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{ if ( as->argc < arg )
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{ as->argv[arg-1] = def;
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as->argc = arg;
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}
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}
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static int
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put_ansi(ansi_stream *as, int chr)
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{ switch(as->cmdstat)
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{ case CMD_INITIAL:
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switch(chr)
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{
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#if 0
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case '\b':
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CMD(rlc_caret_backward(b, 1));
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break;
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case Control('G'):
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MessageBeep(MB_ICONEXCLAMATION);
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break;
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case '\r':
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CMD(rlc_cariage_return(b));
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break;
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case '\n':
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CMD(rlc_caret_down(b, 1));
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break;
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case '\t':
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CMD(rlc_tab(b));
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break;
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#endif
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case 27: /* ESC */
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as->cmdstat = CMD_ESC;
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break;
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default:
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return send_ansi(as, chr);
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}
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break;
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case CMD_ESC:
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switch(chr)
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{ case '[':
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as->cmdstat = CMD_ANSI;
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as->argc = 0;
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as->argstat = 0; /* no arg */
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break;
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default:
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as->cmdstat = CMD_INITIAL;
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break;
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}
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break;
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case CMD_ANSI: /* ESC [ */
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if ( chr >= '0' && chr <= '9' )
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{ if ( !as->argstat )
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{ as->argv[as->argc] = (chr - '0');
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as->argstat = 1; /* positive */
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} else
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{ as->argv[as->argc] = as->argv[as->argc] * 10 + (chr - '0');
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}
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break;
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}
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if ( !as->argstat && chr == '-' )
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{ as->argstat = -1; /* negative */
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break;
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}
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if ( as->argstat )
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{ as->argv[as->argc] *= as->argstat;
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if ( as->argc < (ANSI_MAX_ARGC-1) )
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as->argc++; /* silently discard more of them */
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as->argstat = 0;
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}
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switch(chr)
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{ case ';':
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return 0; /* wait for more args */
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#if 0
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case 'H':
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case 'f':
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rlc_need_arg(as, 1, 0);
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rlc_need_arg(as, 2, 0);
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CMD(rlc_set_caret(as, as->argv[0], as->argv[1]));
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break;
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case 'A':
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rlc_need_arg(as, 1, 1);
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CMD(rlc_caret_up(as, as->argv[0]));
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break;
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case 'B':
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rlc_need_arg(as, 1, 1);
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CMD(rlc_caret_down(as, as->argv[0]));
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break;
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case 'C':
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rlc_need_arg(as, 1, 1);
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CMD(rlc_caret_forward(as, as->argv[0]));
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break;
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case 'D':
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rlc_need_arg(as, 1, 1);
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CMD(rlc_caret_backward(as, as->argv[0]));
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break;
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case 's':
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CMD(rlc_save_caret_position(as));
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break;
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case 'u':
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CMD(rlc_restore_caret_position(as));
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break;
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case 'J':
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if ( as->argv[0] == 2 )
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CMD(rlc_erase_display(as));
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break;
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case 'K':
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CMD(rlc_erase_line(as));
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break;
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#endif
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case 'm':
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rlc_need_arg(as, 1, 0);
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set_ansi_attributes(as);
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}
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as->cmdstat = CMD_INITIAL;
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}
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return 0;
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}
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static ssize_t
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write_ansi(void *handle, char *buffer, size_t size)
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{ ansi_stream *as = handle;
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size_t n = size/sizeof(wchar_t);
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const wchar_t *s = (const wchar_t*)buffer;
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const wchar_t *e = &s[n];
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Message("Writing %d characters", n);
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for( ; s<e; s++)
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{ if ( put_ansi(as, *s) != 0 )
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return -1; /* error */
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}
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Message("Wrote %d characters", n);
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return n * sizeof(wchar_t);
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}
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static int
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close_ansi(void *handle)
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{ ansi_stream *as = handle;
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if ( as->magic == ANSI_MAGIC )
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{ as->pStream->functions = saved_functions;
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as->pStream->handle = as->saved_handle;
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PL_free(as);
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return 0;
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}
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return -1;
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}
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static int
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control_ansi(void *handle, int op, void *data)
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{ ansi_stream *as = handle;
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switch( op )
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{ case SIO_FLUSHOUTPUT:
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return flush_ansi(as);
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case SIO_SETENCODING:
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return -1; /* We cannot change the encoding! */
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case SIO_LASTERROR:
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return 0; /* TBD */
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default:
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return -1;
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}
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}
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/*******************************
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* USER WIN32 CONSOLE *
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*******************************/
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static ssize_t
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Sread_win32_console(void *handle, char *buffer, size_t size)
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{ GET_LD
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ansi_stream *as = handle;
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BOOL rc;
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DWORD done;
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DWORD mode;
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int isRaw = FALSE;
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if ( Suser_input &&
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Suser_input->handle == handle &&
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PL_ttymode(Suser_input) == PL_RAWTTY )
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{ if ( GetConsoleMode(as->hConsole, &mode) &&
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SetConsoleMode(as->hConsole,
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mode & ~(ENABLE_LINE_INPUT|ENABLE_ECHO_INPUT)) )
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isRaw = TRUE;
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}
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if ( !PL_wait_for_console_input(as->hConsole) )
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goto error;
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rc = ReadConsoleW(as->hConsole,
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buffer,
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(DWORD)(size / sizeof(wchar_t)),
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&done,
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NULL);
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if ( rc )
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{ if ( isRaw )
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SetConsoleMode(as->hConsole, mode);
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return done * sizeof(wchar_t);
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}
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error:
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if ( isRaw )
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SetConsoleMode(as->hConsole, mode);
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return -1;
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}
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static int
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wrap_console(HANDLE h, IOSTREAM *s, IOFUNCTIONS *funcs)
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{ ansi_stream *as;
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as = PL_malloc(sizeof(*as));
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memset(as, 0, sizeof(*as));
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as->hConsole = h;
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as->pStream = s;
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as->saved_handle = s->handle;
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s->handle = as;
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s->encoding = ENC_WCHAR;
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s->functions = funcs;
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return TRUE;
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}
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static void
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init_output(void *handle, CONSOLE_SCREEN_BUFFER_INFO *info)
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{ ansi_stream *as = handle;
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as->def_attr = info->wAttributes;
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}
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int
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PL_w32_wrap_ansi_console(void)
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{ HANDLE hIn = GetStdHandle(STD_INPUT_HANDLE);
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HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
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HANDLE hError = GetStdHandle(STD_ERROR_HANDLE);
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CONSOLE_SCREEN_BUFFER_INFO info;
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if ( hIn == INVALID_HANDLE_VALUE ||
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hOut == INVALID_HANDLE_VALUE ||
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hError == INVALID_HANDLE_VALUE ||
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!GetConsoleScreenBufferInfo(hOut, &info) )
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return FALSE;
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saved_functions = Sinput->functions;
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con_functions = *Sinput->functions;
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con_functions.read = Sread_win32_console;
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con_functions.write = write_ansi;
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con_functions.close = close_ansi;
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con_functions.control = control_ansi;
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con_functions.seek = NULL;
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wrap_console(hIn, Sinput, &con_functions);
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wrap_console(hOut, Soutput, &con_functions);
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wrap_console(hError, Serror, &con_functions);
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init_output(Soutput->handle, &info);
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init_output(Serror->handle, &info);
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PL_set_prolog_flag("tty_control", PL_BOOL, TRUE);
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return TRUE;
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}
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