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/**
* @namespace biew
* @file mainloop.c
* @brief This file is analog of message loop routine.
* @version -
* @remark this source file is part of Binary vIEW project (BIEW).
* The Binary vIEW (BIEW) is copyright (C) 1995 Nick Kurshev.
* All rights reserved. This software is redistributable under the
* licence given in the file "Licence.en" ("Licence.ru" in russian
* translation) distributed in the BIEW archive.
* @note Requires POSIX compatible development system
*
* @author Nick Kurshev
* @since 1995
* @note Development, fixes and improvements
**/
#include <string.h>
#include "colorset.h"
#include "bmfile.h"
#include "tstrings.h"
#include "reg_form.h"
#include "biewutil.h"
#include "biewhelp.h"
#include "bconsole.h"
#include "codeguid.h"
#include "search.h"
#include "setup.h"
#include "biewlib/kbd_code.h"
#include "biewlib/biewlib.h"
extern unsigned long LastOffset;
extern unsigned strmaxlen;
extern REGISTRY_BIN mzTable;
unsigned long lastbyte;
static unsigned long OldCurrFilePos; /** means previous File position */
unsigned long CurrStrLen = 0;
unsigned long PrevStrLen = 2;
unsigned long CurrPageSize = 0;
unsigned long PrevPageSize = 0;
int textshift = 0;
int __FASTCALL__ isHOnLine(unsigned long cp,int width)
{
if(FoundTextSt == FoundTextEnd) return 0;
return (FoundTextSt >= cp && FoundTextSt < cp + width)
|| (FoundTextEnd > cp && FoundTextEnd < cp + width)
|| (FoundTextSt <= cp && FoundTextEnd >= cp + width);
}
void __FASTCALL__ HiLightSearch(TWindow *out,unsigned long cfp,tRelCoord minx,tRelCoord maxx,tRelCoord y,HLInfo *buff,unsigned flags)
{
tvioBuff it;
unsigned __len,width;
int x;
char attr;
t_vchar chars[__TVIO_MAXSCREENWIDTH];
t_vchar oem_pg[__TVIO_MAXSCREENWIDTH];
ColorAttr attrs[__TVIO_MAXSCREENWIDTH];
it.chars = chars;
it.oem_pg = oem_pg;
it.attrs = attrs;
width = (flags & HLS_USE_DOUBLE_WIDTH) == HLS_USE_DOUBLE_WIDTH ? maxx*2 : maxx-minx;
attr = browser_cset.highline;
if((flags & HLS_USE_BUFFER_AS_VIDEO) == HLS_USE_BUFFER_AS_VIDEO)
{
memcpy(chars,buff->buff.chars,width);
memcpy(oem_pg,buff->buff.oem_pg,width);
memset(attrs,attr,width);
}
else
{
memcpy(chars,buff->text,width);
memset(oem_pg,0,width);
memset(attrs,attr,width);
__nls_PrepareOEMForTVio(&it,width);
}
x = (int)(FoundTextSt - cfp);
if((flags & HLS_USE_DOUBLE_WIDTH) == HLS_USE_DOUBLE_WIDTH) x *= 2;
__len = (unsigned)(FoundTextEnd - FoundTextSt);
if((flags & HLS_USE_DOUBLE_WIDTH) == HLS_USE_DOUBLE_WIDTH) __len *= 2;
if(__len > width - x) __len = width - x;
if(x < 0) { __len += x; x = 0; }
if(__len && x + __len <= width)
{
unsigned char end,st;
st = x;
end = (__len + x);
attr = browser_cset.hlight;
memset(&attrs[st],attr,end-st);
}
twWriteBuffer(out,minx + 1,y + 1,&it,width);
}
static void __NEAR__ __FASTCALL__ drawTitle( void )
{
unsigned percent;
unsigned long flen;
flen = BMGetFLength();
percent = flen ? (unsigned)(( lastbyte*100 )/flen) : 100;
if(percent > 100) percent = 100;
twUseWin(TitleWnd);
twGotoXY(twGetClientWidth(TitleWnd)-4,1);
twPrintF("%u%%",percent);
twClrEOL();
}
char legalchars[] = "+-0123456789ABCDEFabcdef";
void MainLoop( void )
{
int ch;
unsigned long savep = 0,cfp,nfp,flen;
unsigned long lwidth;
BMSeek(LastOffset,BM_SEEK_SET);
drawPrompt();
twUseWin(MainWnd);
textshift = activeMode->paint(KE_SUPERKEY,textshift);
BMSeek(LastOffset,BM_SEEK_SET);
drawTitle();
while(1)
{
unsigned che;
ch = GetEvent(drawPrompt,MainActionFromMenu,NULL);
nfp = cfp = OldCurrFilePos = BMGetCurrFilePos();
flen = BMGetFLength();
lwidth = activeMode->CurLineWidth();
che = ch & 0x00FF;
if(((che >= '0' && che <= '9') ||
(che >= 'A' && che <= 'Z') ||
(che >= 'a' && che <= 'z') ||
ch == KE_BKSPACE) &&
(activeMode->flags & __MF_USECODEGUIDE) == __MF_USECODEGUIDE)
{
nfp = GidGetGoAddress(ch);
goto GO;
}
switch(ch)
{
case KE_CTL_F(1):
case KE_CTL_F(2):
case KE_CTL_F(3):
case KE_CTL_F(4):
case KE_CTL_F(5):
case KE_CTL_F(6):
case KE_CTL_F(7):
case KE_CTL_F(8):
case KE_CTL_F(9):
case KE_CTL_F(10):
{
unsigned i;
i = (ch - KE_CTL_F(1)) >> 8;
if(activeMode->action[i])
{
if(activeMode->action[i]()) { ch = KE_SUPERKEY; drawPrompt(); }
}
}
break;
case KE_ALT_F(1):
case KE_ALT_F(2):
case KE_ALT_F(3):
case KE_ALT_F(4):
case KE_ALT_F(5):
case KE_ALT_F(6):
case KE_ALT_F(7):
case KE_ALT_F(8):
case KE_ALT_F(9):
case KE_ALT_F(10):
{
unsigned i;
i = (ch - KE_ALT_F(1)) >> 8;
if(detectedFormat->action[i]) nfp = detectedFormat->action[i]();
}
break;
case KE_SUPERKEY: goto DRAW;
case KE_F(1) : About(); continue;
default : continue;
case KE_SHIFT_F(1): activeMode->help();
break;
case KE_F(10):
case KE_ESCAPE : return;
case KE_ENTER:
QuickSelectMode();
drawPrompt();
ch = KE_SUPERKEY;
break;
case KE_F(2):
if(SelectMode()) ch = KE_SUPERKEY;
break;
case KE_F(3):
if(NewSource())
{
ch = KE_SUPERKEY;
FoundTextSt = FoundTextEnd; ch = KE_SUPERKEY;
PaintTitle();
}
break;
case KE_F(4):
if(activeMode->misc_action)
{
unsigned long sfp;
sfp = BMGetCurrFilePos();
activeMode->misc_action();
ch = KE_SUPERKEY;
PaintTitle();
drawPrompt();
BMSeek(sfp,BM_SEEK_SET);
}
break;
case KE_F(5):
{
static unsigned long shift = 0,flags = GJDLG_ABSOLUTE;
if(GetJumpDlg(&shift,&flags))
{
switch(flags)
{
default:
case GJDLG_ABSOLUTE: nfp = shift;
break;
case GJDLG_RELATIVE: nfp += (long)shift;
break;
case GJDLG_VIRTUAL:
if(detectedFormat->va2pa)
{
unsigned long temp_fp;
temp_fp = detectedFormat->va2pa(shift);
if(!temp_fp) ErrMessageBox(NOT_ENTRY,NULL);
else nfp = temp_fp;
}
else nfp = shift;
break;
}
if((activeMode->flags & __MF_USECODEGUIDE) == __MF_USECODEGUIDE)
GidAddBackAddress();
ch = KE_SUPERKEY;
}
}
break;
case KE_SHIFT_F(5): nfp = WhereAMI(nfp);
break;
case KE_F(6): BMReRead();
FoundTextSt = FoundTextEnd; ch = KE_SUPERKEY;
PaintTitle();
break;
case KE_SHIFT_F(6): SelectSysInfo(); break;
case KE_F(7): nfp = Search(False); ch = KE_JUSTFIND; break;
case KE_SHIFT_F(7) : nfp = Search(True); ch = KE_JUSTFIND; break;
case KE_F(8): if(detectedFormat->showHdr) nfp = detectedFormat->showHdr();
else if(IsNewExe()) nfp = mzTable.showHdr();
break;
case KE_SHIFT_F(8): SelectTool(); break;
case KE_F(9): Setup(); break;
case KE_SHIFT_F(10): if(FileUtils())
{
FoundTextSt = FoundTextEnd; ch = KE_SUPERKEY;
PaintTitle();
}
break;
case KE_HOME: textshift = 0; break;
case KE_END: textshift = strmaxlen - tvioWidth/2; break;
case KE_UPARROW:
nfp = cfp - activeMode->PrevLineWidth();
break;
case KE_DOWNARROW:
nfp = cfp + activeMode->CurLineWidth();
break;
case KE_RIGHTARROW:
if((activeMode->flags & __MF_TEXT) == __MF_TEXT)
textshift+=activeMode->get_symbol_size();
else nfp = cfp + activeMode->get_symbol_size();
break;
case KE_LEFTARROW:
if((activeMode->flags & __MF_TEXT) == __MF_TEXT)
textshift-=activeMode->get_symbol_size();
else nfp = cfp - activeMode->get_symbol_size();
if(textshift < 0) textshift = 0;
break;
case KE_CTL_RIGHTARROW:
if((activeMode->flags & __MF_TEXT) == __MF_TEXT)
textshift+=8*activeMode->get_symbol_size();
else nfp = cfp + 8*activeMode->get_symbol_size();
break;
case KE_CTL_LEFTARROW:
if((activeMode->flags & __MF_TEXT) == __MF_TEXT)
textshift-=8*activeMode->get_symbol_size();
else nfp = cfp - 8*activeMode->get_symbol_size();
if(textshift < 0) textshift = 0;
break;
case KE_PGUP:
nfp = cfp - activeMode->PrevPageSize();
break;
case KE_PGDN:
nfp = cfp + activeMode->CurPageSize();
break;
case KE_CTL_PGUP: nfp = 0;
break;
case KE_CTL_PGDN:
nfp = flen;
break;
case KE_CTL_(O): /** User screen */
{
unsigned evt;
twHideWin(MainWnd);
twHideWin(TitleWnd);
do
{
evt = GetEvent(drawEmptyPrompt,NULL,NULL);
}
while(!(evt == KE_ESCAPE || evt == KE_F(10) || evt == KE_CTL_(O)));
twShowWin(MainWnd);
twShowWin(TitleWnd);
}
continue;
}
GO:
if(cfp != nfp)
{
unsigned long twidth = ( activeMode->flags & __MF_TEXT ) == __MF_TEXT ?
activeMode->get_symbol_size() :
( activeMode->flags & __MF_DISASM ) == __MF_DISASM ?
1 : lwidth;
unsigned long p = flen - twidth;
if((long)nfp < 0) nfp = 0;
if(nfp > 0) if(nfp > p) nfp = p;
BMSeek(nfp,BM_SEEK_SET);
}
DRAW:
twUseWin(MainWnd);
if((activeMode->flags & __MF_TEXT) != __MF_TEXT) savep = BMGetCurrFilePos();
textshift = activeMode->paint(ch,textshift);
if((activeMode->flags & __MF_TEXT) != __MF_TEXT) BMSeek(savep,BM_SEEK_SET);
drawTitle();
}
}
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