From 6b3f26b1721acb62029152212847bfd2589c2bba Mon Sep 17 00:00:00 2001
From: "Kirill Lipatov (Leency)" <lipatov.kiril@gmail.com>
Date: Sun, 20 Nov 2016 21:48:03 +0000
Subject: [PATCH] cmm: upload vfc (Visual Text Comparer / Diff tool)

git-svn-id: svn://kolibrios.org@6732 a494cfbc-eb01-0410-851d-a64ba20cac60
---
 programs/cmm/vfc/32user32.h  | 154 ++++++++++++++++++++++++++
 programs/cmm/vfc/Tupfile.lua |   6 +
 programs/cmm/vfc/build.bat   |   5 +
 programs/cmm/vfc/if.h        | 181 ++++++++++++++++++++++++++++++
 programs/cmm/vfc/objects.h   | 182 ++++++++++++++++++++++++++++++
 programs/cmm/vfc/vfc.c       | 209 +++++++++++++++++++++++++++++++++++
 programs/cmm/vfc/vfc_gui.h   | 106 ++++++++++++++++++
 7 files changed, 843 insertions(+)
 create mode 100644 programs/cmm/vfc/32user32.h
 create mode 100644 programs/cmm/vfc/Tupfile.lua
 create mode 100644 programs/cmm/vfc/build.bat
 create mode 100644 programs/cmm/vfc/if.h
 create mode 100644 programs/cmm/vfc/objects.h
 create mode 100644 programs/cmm/vfc/vfc.c
 create mode 100644 programs/cmm/vfc/vfc_gui.h

diff --git a/programs/cmm/vfc/32user32.h b/programs/cmm/vfc/32user32.h
new file mode 100644
index 0000000000..db31deeb3f
--- /dev/null
+++ b/programs/cmm/vfc/32user32.h
@@ -0,0 +1,154 @@
+
+
+:static int __wsprintfproc;
+:static int cdecl __wsprintf(int buff,mask,...){
+  char  buffer[MAX_PATH];
+  char  bufnum[32];
+  int   bufferlen;
+  int   param;
+  int   length;
+  int   pad;
+
+  struct _wsprintf_mf{
+    int   precision;
+    int   width;
+    int   minus ;
+    int   plus  ;
+    int   diez  ;
+    int   zero  ;
+    byte upcase ;
+    byte _signed;//
+  }mf;
+
+  $push EBX,ESI,EDI;
+  param=#mask[sizeof(mask)];
+  length=0;
+  EDX=mask;
+  EBX=buff;
+  for(;;){
+    mf=0;
+    mf.precision=0x7FFF;
+    REPEATSMALL:
+    if(!DSCHAR[EDX]){
+      AL=0;
+      $call __wsprintfproc;
+      $pop EDI,ESI,EBX;
+      return length;
+    }
+    if(DSCHAR[EDX]!='%'){
+      WRITECHAR: AL=DSCHAR[EDX];$call __wsprintfproc; EDX++;GOTO REPEATSMALL;
+    }
+
+    GETMASK:
+    EDX++;
+    SWITCH(DSCHAR[EDX]){
+      CASE '-': mf.minus++;goto GETMASK;
+      CASE '+': mf.plus ++;goto GETMASK;
+      CASE '#': mf.diez ++;goto GETMASK;
+      CASE '0': mf.zero ++;EDX++;
+    }
+
+    WHILE(DSCHAR[EDX]>='0')&&(DSCHAR[EDX]<='9'){
+      $push EDX;mf.width=mf.width*10+DSCHAR[EDX]-'0';$pop EDX;EDX++;
+    }
+    if(DSCHAR[EDX]=='.'){
+      mf.precision=0;
+  GETPRECISION:
+      EDX++;
+      if(DSCHAR[EDX]>='0')
+      &&(DSCHAR[EDX]<='9'){
+        $push EDX;mf.precision=mf.precision*10+DSCHAR[EDX]-'0';$pop EDX;
+        GOTO GETPRECISION;
+      }
+    }
+    if(DSCHAR[EDX]=='l'){
+      EDX++;
+    }
+    if(DSCHAR[EDX]=='h'){
+      EDX++;
+    }
+    if(DSCHAR[EDX]<'a'){mf.upcase=1;}
+    SWITCH(DSCHAR[EDX]|0x20){
+      CASE 'c': buffer=DSCHAR[param];bufferlen=1;goto FORMAT;
+      CASE 's': if(!DSDWORD[param])DSDWORD[param]="(null)";//??????
+                FOR(bufferlen=0;bufferlen<mf.precision;bufferlen++){
+                  AL=DSCHAR[DSDWORD[param]+bufferlen];
+                  if(!AL)BREAK;
+                  buffer[bufferlen]=AL;
+                }
+                goto FORMAT;
+    }
+
+    //á ᨬ¢®«ì­ë¬¨ ¯®ª®­ç¨«¨. ⥯¥àì ç¨á«®¢ë¥
+    if(mf.precision==0x7FFF){mf.precision=mf.width;}
+    if(!mf.precision)mf.precision=1;
+    if(DSCHAR[EDX]|0x20=='x'){
+      $push EDX;
+      EDI=0;//cnt
+      EDX=DSDWORD[param];
+      WHILE(EDX){
+        AL=DL&0xF+0x30;if(AL>'9'){AL+='A'-'9'-1;if(!mf.upcase)AL|=0x20;}
+        bufnum[EDI]=AL;EDI++;EDX>>=4;
+      }
+      $pop EDX;
+      WHILE(EDI<mf.precision){bufnum[EDI]='0';EDI++;}
+      if(mf.diez){bufnum[EDI]=DSCHAR[EDX];EDI++;bufnum[EDI]='0';EDI++;}
+      FOR(bufferlen=0;EDI;bufferlen++){
+        EDI--;buffer[bufferlen]=bufnum[EDI];
+      }
+      goto FORMAT;
+    }
+    switch(DSCHAR[EDX]){
+      CASE 'i':
+      CASE 'd': $push EDX;EDX=DSDWORD[param];
+                if(int EDX<0){-EDX;mf._signed++;}
+                GOTO WRITEINT;
+      CASE 'u': $push EDX;mf.plus=0;EDX=DSDWORD[param];
+  WRITEINT:
+                EDI=0;//cnt
+                WHILE(EDX){
+                  EAX=0;EDX><EAX;EAX/=10;EDX><EAX;bufnum[EDI]=AL+'0';EDI++;
+                }
+                WHILE(EDI<mf.precision){bufnum[EDI]='0';EDI++;}
+                if(mf._signed){bufnum[EDI]='-';EDI++;}
+                ELSE
+                if(mf.plus){bufnum[EDI]='+';EDI++;}
+                FOR(bufferlen=0;EDI;bufferlen++){
+                  EDI--;buffer[bufferlen]=bufnum[EDI];
+                }
+                $pop EDX;
+            FORMAT:
+                EDX++;
+                param+=sizeof(int);
+                pad=mf.width-bufferlen;if(pad<0)pad=0;
+                if(!mf.minus)$call FRM;
+                FOR(EDI=0;EDI<bufferlen;EDI++){AL=buffer[EDI];$call __wsprintfproc;}
+                if(mf.minus)$call FRM;
+                BREAK;
+      default:
+                goto WRITECHAR;
+    }
+  }//for(;;)
+  FRM: WHILE(pad){AL=' ';$call __wsprintfproc;pad--;}$ret;
+}
+
+:int cdecl wsprintf(...)inline{
+  __wsprintfproc=#WSP;
+  goto __wsprintf;
+  WSP: DSCHAR[EBX]=AL;EBX++;$ret;
+}
+
+:void FillMemory(int dest,len,byt){
+  EDI = dest;
+  ECX = len;
+  AL = byt;
+  $cld $rep $stosb
+}
+
+//#define CopyMemory memmov
+:void CopyMemory(int dest,src,len){
+  EDI = dest;
+  ESI = src;
+  ECX = len;
+  $cld $rep $movsb
+}
\ No newline at end of file
diff --git a/programs/cmm/vfc/Tupfile.lua b/programs/cmm/vfc/Tupfile.lua
new file mode 100644
index 0000000000..30afdd0a95
--- /dev/null
+++ b/programs/cmm/vfc/Tupfile.lua
@@ -0,0 +1,6 @@
+if tup.getconfig("NO_CMM") ~= "" then return end
+if tup.getconfig("LANG") == "ru"
+then C_LANG = "LANG_RUS"
+else C_LANG = "LANG_ENG" -- this includes default case without config
+end
+tup.rule("vfc.c", "c-- /D=AUTOBUILD /D=$(C_LANG) %f" .. tup.getconfig("KPACK_CMD"), "vfc.com")
diff --git a/programs/cmm/vfc/build.bat b/programs/cmm/vfc/build.bat
new file mode 100644
index 0000000000..8c50e2e82b
--- /dev/null
+++ b/programs/cmm/vfc/build.bat
@@ -0,0 +1,5 @@
+@del vfc
+@c-- vfc.c
+@move vfc.com vfc
+@del warning.txt
+@pause
diff --git a/programs/cmm/vfc/if.h b/programs/cmm/vfc/if.h
new file mode 100644
index 0000000000..f65aaed152
--- /dev/null
+++ b/programs/cmm/vfc/if.h
@@ -0,0 +1,181 @@
+int verthoriz=0;
+int shownums=1;
+
+char str[MAX_PATH];
+word attr[MAX_PATH];
+
+printstrat(int x,y,size,_text,_attr)
+{
+	int i;
+	for (i=0; i<size; i++)
+	{
+		con_set_flags stdcall (ESBYTE[i*2+_attr]);
+		con_set_cursor_pos stdcall (x+i,y);
+		con_write_string stdcall (_text+i, 1);		
+	}
+}
+
+
+drawline(int x,y,width,linex,s1,s2,ln)
+{
+	int i;
+	int s1l;
+	int s2l;
+	int c1,c2;
+	char temp[10];
+	int x2,width2;
+
+
+	s1l=-1;
+	s2l=-1;
+	if(s1!=-1)s1l=strlen(s1);
+	if(s2!=-1)s2l=strlen(s2);
+
+	FillMemory(#attr,width*2,0x1F);
+	str[0]='º'; str[x+width-1]='º';
+
+	if(s1==-1)
+	{
+		FillMemory(#str[1],width-2,'ú');
+		FillMemory(#attr[2],width-2*2,7);
+	}else{//áâப  ¯à¨áãâáâ¢ã¥â
+		x2=1;
+		width2=width;
+		if(shownums)
+		{
+			wsprintf(#temp,"%6d",ln+1);
+			for(i=0;i<6;i++)
+			{
+				str[i+1]=temp[i];
+				attr[i+1]=0x19;
+			}
+			str[7]='³';
+			x2+=7;
+			width2-=7;
+		}
+		if(s1>0)&&(s2>0)&&(!strcmp(s1,s2))
+		{//áâப¨ ᮢ¯ ¤ îâ
+			for(i=0;i<width2-2;i++)
+				if(i+linex<s1l)str[x2+i]=DSBYTE[s1+i+linex];else str[x2+i]=' ';
+		}else
+		{
+			for(i=0;i<width2-2;i++)
+			{
+				if(i+linex<s1l)c1=DSBYTE[s1+i+linex]; else c1=' ';
+				if(i+linex<s2l)c2=DSBYTE[s2+i+linex]; else c2=' ';
+				str[x2+i]=c1;
+				if(c1==c2)attr[x2+i]=0x4F;else attr[x2+i]=0x4E;
+			}
+		}
+	}
+	printstrat(x,y,width,#str,#attr);
+}
+
+drawborder(dword x1,y1,xs1,ys1,fname,line)
+char temp[MAX_PATH];
+int  titlelen;
+{
+	int i,j;
+
+	FillMemory(#str,xs1,'Í');
+	FillMemory(#attr,xs1*2,0x1F);
+
+	str[0]='È'; str[xs1-1]='¼';
+	printstrat(x1,y1+ys1-1,xs1,#str,#attr); //­¨¦­ïï áâà®çª 
+
+	str[0]='É'; str[xs1-1]='»';
+	titlelen=xs1-4;
+	if(!shownums)titlelen-=8;
+	if(strlen(fname)>titlelen)wsprintf(#temp," ...%s ",strlen(fname)+fname-titlelen+3);
+		else wsprintf(#temp," %s ",fname);
+	for(i=0;temp[i];i++){ str[i+1]=temp[i]; attr[i+1]=0x1E; }
+	if(!shownums)
+	{
+		wsprintf(#temp,"[%6d]",line);
+		CopyMemory(xs1-9+#str,#temp,8);
+		FillMemory(xs1-8*2+#attr,12,0x19);
+	}
+	printstrat(x1,y1,xs1,#str,#attr);
+}
+
+printpanel(dword line,linex ,x1,y1,xs1,ys1 ,x2,y2,xs2,ys2)
+{
+	int i,j;
+	int s,d,sl,dl;
+	int line1,line2;
+
+	for(j=line;j<srcfilenums.Count;j++){ s=srcfilenums.At(j); if(s!=-1)BREAK; }
+	if(s==-1)s=srcfilelines.Count-1;
+	drawborder(x1,y1,xs1,ys1,srcfilename,s+1);
+
+	for(j=line;j<dstfilenums.Count;j++){ d=dstfilenums.At(j); if(d!=-1)BREAK; }
+	if(d==-1)d=dstfilelines.Count-1;
+	drawborder(x2,y2,xs2,ys2,dstfilename,d+1);
+	for(j=0;j<ys1-2;j++)
+	{
+		if(j+line<srcfilenums.Count)s=srcfilenums.At(j+line); else s=-1;
+		line1=s;
+		if(s!=-1)s=srcfilelines.At(s);
+		if(j+line<dstfilenums.Count)d=dstfilenums.At(j+line); else d=-1;
+		line2=d;
+		if(d!=-1)d=dstfilelines.At(d);
+		drawline(x1,y1+j+1,xs1,linex,s,d,line1);
+		drawline(x2,y2+j+1,xs2,linex,d,s,line2);
+	}
+}
+
+
+ifinit()
+int linenum=0;
+int linex=0;
+int ys;
+int sbi_x, sbi_y;
+{
+	load_dll(libConsole, #con_init, 0);
+	con_init stdcall (122, 40, 122, 800, #window_title);
+
+	linenum=diffs.At(0);
+
+	sbi_x = 122;
+	sbi_y = 800;
+
+	sbi_y--;
+	ys=sbi_y-2;
+
+	if(linenum+ys>srcfilenums.Count)linenum=srcfilenums.Count-ys;
+	if(linenum<0) linenum=0; 
+
+@redraw:
+	if(!verthoriz)
+	{
+		printpanel(linenum,linex
+							,0,0
+							,sbi_x/2 ,sbi_y
+							,sbi_x/2 ,0
+							,sbi_x/2 ,sbi_y
+		);
+		ys=sbi_y-2;
+	}
+	else
+	{
+		printpanel(linenum,linex
+							,0,0
+							,sbi_x ,sbi_y/2
+							,0            ,sbi_y/2
+							,sbi_x ,sbi_y/2
+		);
+		if(sbi_y&1)
+		{
+			FillMemory(#str,sbi_x,'°');
+			FillMemory(#attr,sbi_x*2,0);
+			printstrat(0,sbi_y-1,sbi_x,#str,#attr);
+		}
+		ys=sbi_y/2-2;
+	}
+
+	if (!ys) goto redraw;
+	else {
+		con_set_cursor_pos stdcall (2,0);
+		ExitProcess();
+	}
+}
diff --git a/programs/cmm/vfc/objects.h b/programs/cmm/vfc/objects.h
new file mode 100644
index 0000000000..3da50a6b51
--- /dev/null
+++ b/programs/cmm/vfc/objects.h
@@ -0,0 +1,182 @@
+
+
+struct TCollection{
+  int Count;//itemcunt
+  int Delta;//increase buffer Delta
+  int Items;//pointer to array of item pointers
+  int Limit;//currently allocated size (in elements) of Items list
+
+  TCollection( int ALimit,ADelta );
+  ~TCollection( void );
+
+  int  At( int Index );
+  void AtDelete( int Index );
+  void AtFree( int Index );
+  void AtInsert( int Index, Item );
+  void DeleteAll( void );
+  void Free( int Item );
+  void FreeAll( void );
+  void FreeItem( int Item );
+  void Insert( int Item );
+  void SetLimit( int ALimit );
+};
+
+:int TCollection::At( int Index )
+{
+  return DSDWORD[ Index*sizeof(int)+Items ];
+}
+
+:void TCollection::AtDelete( int Index )
+{
+//  if(Index<0)||(Index>=Count){/*Error(coIndexError);*/return;}
+  ECX = Count-Index-1;
+  EDI = Index*sizeof(int)+Items; ESI = EDI+4; $cld; $rep;$movsd;
+  Count --;
+}
+
+:void TCollection::AtFree( int Index )
+{
+  int Item = At( Index);
+  AtDelete( Index );
+  FreeItem( Item );
+}
+
+:void TCollection::AtInsert( int Index, Item )
+{
+  $pushfd
+  IF( Count == Limit )
+  {
+    SetLimit( Count+Delta );
+  }
+  ECX = Count-Index;
+  EDI = Count*sizeof(int)+Items;
+  ESI = EDI-4; $std $rep $movsd $cld
+  DSDWORD[ EDI ] = Item;
+  Count ++;
+  $popfd
+}
+
+:void TCollection::DeleteAll()
+{
+  Count=0;
+}
+
+:void TCollection::Free( int Item )
+{
+  Delete( Item );
+  FreeItem( Item );
+}
+
+:void TCollection::FreeAll( void )
+{
+  int I;
+  FOR( I = 0; I < Count; I ++ )FreeItem( At(I) );
+  Count = 0;
+}
+
+:void TCollection::FreeItem( int Item )
+{
+  IF( Item )free( Item );//+++Dispose(PObject(Item), Done);
+}
+
+:void TCollection::Insert( int Item )
+{
+  AtInsert( Count, Item );
+}
+
+:void TCollection::SetLimit( int ALimit )
+{
+  int AItems;
+
+  IF( ALimit < Count )ALimit = Count;
+  IF( ALimit != Limit )
+  {
+    IF( !ALimit ) AItems = 0;
+    ELSE
+    {
+      AItems = malloc(ALimit*sizeof(int) );
+      IF( Count )&&( Items )
+      {
+        CopyMemory( AItems, Items, Limit*sizeof(int) );
+      }
+    }
+    IF( Limit )free( Items );
+    Items = AItems;
+    Limit = ALimit;
+  }
+}
+
+:TCollection::TCollection( int ALimit, ADelta )
+{
+  Items = 0;
+  Count = 0;
+  Limit = 0;
+  Delta = ADelta;
+  SetLimit( ALimit );
+  return this;
+}
+
+:TCollection::~TCollection( void )
+{
+  FreeAll();
+  SetLimit(0);
+}
+
+struct TSortedCollection:TCollection
+{
+  int  comparemethod;
+  int  Duplicates;
+
+  TSortedCollection( int ALimit, ADelta );
+
+  int  Compare( int Key1, Key2 );
+  void Insert( int Item );
+  int  Search( int Key, Index );
+};
+
+:int TSortedCollection::Compare( int Key1, Key2 )
+{
+  strcmp( Key1, Key2 );
+}
+
+:TSortedCollection::TSortedCollection( int ALimit, ADelta )
+:TCollection( ALimit, ADelta );
+{
+  comparemethod=#Compare;
+  return this;
+}
+
+:void TSortedCollection::Insert( int Item )
+{
+  int i;
+  IF( !Search(/*KeyOf(*/Item/*)*/,#i) ) || ( Duplicates )AtInsert( i, Item );
+}
+
+
+:int TSortedCollection::Search( int Key, Index )
+{
+  int L, H, I, C;
+  int S;
+
+  S = 0;
+  L = 0;
+  H = Count-1;
+  WHILE( L <= H )
+  {
+    I = L+H >> 1;
+    ECX = I*sizeof(int)+Items;
+    comparemethod( this, /*KeyOf(*/DSDWORD[ECX]/*)*/, Key );
+    C = EAX;
+    IF( C < 0 ){ L = I+1; }
+    ELSE
+    {
+      H = I-1;
+      IF( !C ){
+        S = 1;
+        IF( !Duplicates )L = I;
+      }
+    }
+  }
+  DSDWORD[ Index ]=L;
+  return S;
+}
diff --git a/programs/cmm/vfc/vfc.c b/programs/cmm/vfc/vfc.c
new file mode 100644
index 0000000000..8c1a2e659a
--- /dev/null
+++ b/programs/cmm/vfc/vfc.c
@@ -0,0 +1,209 @@
+//visual text comparer 
+//by den po - jdp@bk.ru
+
+#define MEMSIZE 4096 * 60
+#include "../lib/io.h"
+#include "../lib/strings.h"
+#include "../lib/obj/console.h"
+IO io1, io2;
+
+#define MAX_PATH 260
+
+#include "32user32.h"
+#include "objects.h"
+#include "vfc_gui.h"
+
+#define mincmpstrings 2
+#define maxcmpstrings 10
+#define maxcmpoffset  100
+
+char window_title[] = "Visual Text Comparer (Diff tool)";
+
+char* srcfilename;
+char* dstfilename;
+dword srcfile;
+dword dstfile;
+dword srcfilesize;
+dword dstfilesize;
+TCollection srcfilelines; //file lines
+TCollection dstfilelines;
+TCollection srcfilenums; //lines numbers
+TCollection dstfilenums;
+
+struct TSimpleCollection:TSortedCollection
+{
+  TSimpleCollection();
+  int  Compare( int Key1, Key2 );
+};
+int TSimpleCollection::Compare( int Key1, Key2 ){
+  return Key1-Key2;
+}
+TSimpleCollection::TSimpleCollection():TSortedCollection(1000,1000);
+{
+  comparemethod=#Compare;
+}
+
+TSimpleCollection diffs;   //list of differing strings
+dword srcfilelinks;     //pointer to the previos line with the same first symbol
+dword dstfilelinks;     //
+
+getstrings(dword srcfile,srcfilesize,srcfilelines){
+  ECX=srcfilesize;
+  ESI=srcfile;
+  WHILE(ECX){
+	$push ECX,ESI
+	EAX=srcfilelines; 
+	EAX.TCollection.Insert(ESI);
+	$pop ESI,ECX
+	WHILE(ECX){
+	  $cld $lodsb ECX--;
+	  if(AL==0x0D)||(AL==0x0A)DSBYTE[ESI-1]=0;
+	  if(AL==0x0D)&&(DSBYTE[ESI]==0x0A){$lodsb;ECX--;}
+	  if(AL==0x0D)||(AL==0x0A)BREAK;
+	}
+  }
+}
+
+#include "if.h"
+
+bool getparam() 
+{
+	int i, param_len = strlen(#param);
+	if (param[0]=='"') {
+		for (i=1; i<param_len; i++) if (param[i]=='"') param[i]=NULL;
+		srcfilename = #param + 1;
+		dstfilename = #param + strlen(#param) + 3;
+		return true;
+	}
+	notify("'Wrong params specified. Use next format:\nAPPPATH \"PARAM1\" \"PARAM2\"' -E");
+	return false;
+}
+
+main(){
+	if (param[0]) getparam();
+	if (!srcfilename) || (!dstfilename) gui(); else console();
+}
+
+console() {
+	int i;
+	int p;
+	int bs,bd,bsc,bdc,bsp,bdp;
+	int cache[256];
+	char s1;
+	int s2;
+
+	srcfile = io1.read(srcfilename);
+	dstfile = io2.read(dstfilename);
+
+	srcfilesize = io1.FILES_SIZE;
+	dstfilesize = io2.FILES_SIZE;
+
+	if (!srcfile) die("'First file not found' -E"); 
+	if (!dstfile) die("'Second file not found' -E");
+	
+	srcfilelines.TCollection(srcfilesize/40,8192);
+	dstfilelines.TCollection(dstfilesize/40,8192);
+	//fill line pointers
+	getstrings(srcfile,srcfilesize,#srcfilelines);
+	getstrings(dstfile,dstfilesize,#dstfilelines);
+	srcfilenums.TCollection(srcfilelines.Count,1000);
+	dstfilenums.TCollection(dstfilelines.Count,1000);
+
+	srcfilelinks=malloc(srcfilelines.Count*4);
+	dstfilelinks=malloc(dstfilelines.Count*4);
+
+	//fill links on the next strings with the same first symbols
+	FillMemory(#cache,sizeof(cache),-1); i=srcfilelines.Count;
+	WHILE(i){
+	  i--;
+	  EBX=srcfilelines.At(i); EBX=DSBYTE[EBX];
+	  DSDWORD[i<<2+srcfilelinks]=cache[EBX*4];
+	  cache[EBX*4]=i;
+	}
+	FillMemory(#cache,sizeof(cache),-1); i=dstfilelines.Count;
+	WHILE(i){
+	  i--;
+	  EBX=dstfilelines.At(i); EBX=DSBYTE[EBX];
+	  DSDWORD[i<<2+dstfilelinks]=cache[EBX*4];
+	  cache[EBX*4]=i;
+	}
+
+	diffs.TSimpleCollection();
+
+	while( bsp < srcfilelines.Count ) || ( bdp < dstfilelines.Count )
+	{
+	  ////////////////////////////////////////////////////////
+	  bsc=0;
+	  p=dstfilelines.At(bdp);//current dst position
+	  s1=DSBYTE[p];
+	  bs=bsp+1;//found src line, bsc - number of matched
+	  while( bs != -1 )//no next line starting with the same symbols
+		 &&(bs-bsp<=maxcmpoffset)//check for 100 lines depth
+		 &&(bs<srcfilelines.Count)
+	  {
+		s2=srcfilelines.At(bs);
+		if(!strcmp(p,s2))
+		{//line found
+		  bsc=1;
+		  WHILE(bsc<maxcmpstrings)//counting number of matching lines
+			 &&(bdp+bsc<dstfilelines.Count)
+			 &&(bs+bsc<srcfilelines.Count)
+			 &&(!strcmp(dstfilelines.At(bdp+bsc),srcfilelines.At(bs+bsc)))bsc++;
+		  BREAK;
+		}
+		if(DSBYTE[s2]==s1)bs=DSDWORD[bs<<2+srcfilelinks];else bs++;
+	  }
+	  bdc=0;
+	  p=srcfilelines.At(bsp);//current src position
+	  s1=DSBYTE[p];
+	  bd=bdp+1;//found dst line, bsc - number of matched
+	  while( bd != -1 )//no next line starting with the same symbols
+		 &&(bd-bdp<=maxcmpoffset)//check for 100 lines depth
+		 &&(bd<dstfilelines.Count)
+	  {
+		s2=dstfilelines.At(bd);
+		if(!strcmp(p,s2))
+		{
+		  bdc=1;
+		  WHILE(bdc<maxcmpstrings)//counting number of matching lines
+			 &&(bsp+bdc<srcfilelines.Count)
+			 &&(bd+bdc<dstfilelines.Count)
+			 &&(!strcmp(srcfilelines.At(bsp+bdc),dstfilelines.At(bd+bdc)))bdc++;
+		  BREAK;
+		}
+		if(DSBYTE[s2]==s1)bd=DSDWORD[bd<<2+dstfilelinks];else bd++;
+	  }
+
+	  if(bsc<bdc)
+	   if(bd-bdp<bdc)
+	   ||(bdc>=mincmpstrings)
+	  {
+		WHILE(bdp<bd){
+		  diffs.Insert(srcfilenums.Count);
+		  srcfilenums.Insert(-1); dstfilenums.Insert(bdp); bdp++;
+		}
+		continue;
+	  }
+
+	  if(strcmp(srcfilelines.At(bsp),dstfilelines.At(bdp)))diffs.Insert(srcfilenums.Count);
+	  //lines are equal
+	  srcfilenums.Insert(bsp); bsp++;
+	  dstfilenums.Insert(bdp); bdp++;
+	  CONTINUE;
+	}
+
+	free(srcfilelinks);
+	free(dstfilelinks);
+
+	if(!diffs.Count)
+		notify("'Nothing to compare' -E"); 
+	else ifinit();
+
+	diffs.DeleteAll();        delete diffs;
+	dstfilenums.DeleteAll();  delete dstfilenums;
+	srcfilenums.DeleteAll();  delete srcfilenums;
+	dstfilelines.DeleteAll(); delete dstfilelines;
+	srcfilelines.DeleteAll(); delete srcfilelines;
+	free(dstfile);
+	free(srcfile);
+}
diff --git a/programs/cmm/vfc/vfc_gui.h b/programs/cmm/vfc/vfc_gui.h
new file mode 100644
index 0000000000..7a2e5c74fa
--- /dev/null
+++ b/programs/cmm/vfc/vfc_gui.h
@@ -0,0 +1,106 @@
+#include "../lib/gui.h"
+#include "../lib/obj/box_lib.h"
+#include "../lib/obj/proc_lib.h"
+#include "../lib/patterns/simple_open_dialog.h"
+
+char default_dir[] = "/rd/1";
+od_filter filter2 = {0,0};
+
+int mouse_dd1, mouse_dd2;
+char src_box_text[4096];
+char dst_box_text[4096];
+edit_box src_box = {340,20,35,0xffffff,0x94AECE,0xFFFfff,0xffffff,0x10000000,sizeof(src_box_text),#src_box_text,#mouse_dd1, 10b};
+edit_box dst_box = {340,20,95,0xffffff,0x94AECE,0xFFFfff,0xffffff,0x10000000,sizeof(dst_box_text),#dst_box_text,#mouse_dd2, 0b};
+
+#define BID_EXIT_PRC 01
+#define BID_SRC_OPEN 10
+#define BID_DST_OPEN 11
+#define BID_COMPARE  12
+
+proc_info Form;
+
+void gui()
+{
+	word btn;
+	char run_param[4096];
+	load_dll(boxlib, #box_lib_init,0);
+	load_dll(Proc_lib,  #OpenDialog_init,0);
+	OpenDialog_init stdcall (#o_dialog);
+	SetEventMask(0x27);
+
+	loop() switch(WaitEvent())
+	{
+		case evMouse:
+			edit_box_mouse stdcall (#src_box);
+			edit_box_mouse stdcall (#dst_box);
+			break;
+
+		case evButton:
+			btn = GetButtonID();
+			switch (btn) 
+			{
+			case BID_EXIT_PRC:
+				ExitProcess();
+			case BID_SRC_OPEN:
+				OpenDialog_start stdcall (#o_dialog);
+				if (o_dialog.status) {
+					strcpy(#src_box_text, #openfile_path);
+					src_box.size = src_box.pos 
+					= src_box.shift = src_box.shift_old = strlen(#src_box_text);
+				}
+				break;
+			case BID_DST_OPEN:
+				OpenDialog_start stdcall (#o_dialog);
+				if (o_dialog.status) {
+					strcpy(#dst_box_text, #openfile_path);
+					dst_box.size = dst_box.pos 
+					= dst_box.shift = dst_box.shift_old = strlen(#dst_box_text);
+				}
+				break;
+			case BID_COMPARE:
+				sprintf(#run_param, "\"%s\" \"%s\"", #src_box_text, #dst_box_text);
+				io.run(#program_path+1, #run_param);
+				break;
+			}
+			break;
+	  
+		case evKey:
+			GetKeys();
+			if (key_scancode == SCAN_CODE_ESC) ExitProcess();
+			if (key_scancode == SCAN_CODE_TAB) {
+				if ( src_box.flags & 10b ) {
+					src_box.flags -= 10b;
+					dst_box.flags += 10b;
+				} else {
+					src_box.flags += 10b;
+					dst_box.flags -= 10b;					
+				} 		
+				edit_box_draw stdcall (#src_box);
+				edit_box_draw stdcall (#dst_box);
+			}
+			EAX = key_editbox;
+			edit_box_key stdcall (#src_box);
+			EAX = key_editbox;
+			edit_box_key stdcall (#dst_box);
+			break;
+		 
+		case evReDraw:
+			draw_window();
+			break;
+	}
+}
+
+void draw_window()
+{
+	system.color.get();
+	DefineAndDrawWindow(215, 100, 450, 195 + skin_height, 0x34, system.color.work, #window_title);
+	GetProcessInfo(#Form, SelfInfo);
+
+	WriteText(src_box.left-2, src_box.top-21, 0x90, system.color.work_text, "First file:");
+	WriteText(dst_box.left-2, dst_box.top-21, 0x90, system.color.work_text, "Second file:");
+	DrawEditBox(#src_box);
+	DrawEditBox(#dst_box);
+	DrawStandartCaptButton(src_box.left + src_box.width + 15, src_box.top-3, BID_SRC_OPEN, "...");
+	DrawStandartCaptButton(dst_box.left + dst_box.width + 15, dst_box.top-3, BID_DST_OPEN, "...");
+	DrawStandartCaptButton(dst_box.left - 2, dst_box.top + 40, BID_COMPARE, "Compare");
+}
\ No newline at end of file