From ebe76b73a95178dcb97c6311155d0b037ca21784 Mon Sep 17 00:00:00 2001
From: Marcel Baur <mbaur@g26.ethz.ch>
Date: Wed, 10 Mar 1999 15:11:01 +0000
Subject: [PATCH] Added Boyer-Moore text search.

---
 programs/notepad/ChangeLog   | 19 +++++++-----
 programs/notepad/Makefile.in |  3 +-
 programs/notepad/search.c    | 56 ++++++++++++++++++++++++++++++++++++
 3 files changed, 70 insertions(+), 8 deletions(-)
 create mode 100644 programs/notepad/search.c

diff --git a/programs/notepad/ChangeLog b/programs/notepad/ChangeLog
index b2db9b0f7a8..17960852ffd 100644
--- a/programs/notepad/ChangeLog
+++ b/programs/notepad/ChangeLog
@@ -1,3 +1,7 @@
+Fri Mar  5 22:14:13 1999  Marcel Baur <mbaur@g26.ethz.ch>
+        * NEW [search.c]
+        - Added Boyer-Moore text search
+        
 Sat Feb  6 20:25:25 1999  Marcel Baur <mbaur@g26.ethz.ch>
         - Added new IDS_NOTSAVED ressource (needs translation in *.rc)
         - Improved printing support (not yet complete)
@@ -6,20 +10,20 @@ Sat Feb  6 20:25:25 1999  Marcel Baur <mbaur@g26.ethz.ch>
 
 Thu Jan 28 18:17:08 1999  Jukka Iivonen  <iivonen@iki.fi>
 
-	* [Fi.rc] [main.c] [Makefile.in]
-	Added Finnish language support.
-	
+        * [Fi.rc] [main.c] [Makefile.in]
+        - Added Finnish language support.
+        
 Sun Oct 18 14:11:42 1998  Marcel Baur <mbaur@g26.ethz.ch>
 
         * [??.rc], [TODO], [dialog.c], [dialog.h], [language.c],
         [language.h], [license.c], [license.h], [main.c], [main.h],
         [notepad.rc]:
 
-	- Fixed GetOpenFileName and GetSaveFileName dialogs.
-	- Fixed Print dialog and introduced PrinterSetup dialog.
-	- Fixed PageSetup dialog: values are now correctly initialized
+        - Fixed GetOpenFileName and GetSaveFileName dialogs.
+        - Fixed Print dialog and introduced PrinterSetup dialog.
+        - Fixed PageSetup dialog: values are now correctly initialized
           (had to change all *.rc files)
-	- Preliminary file drag and drop support.
+        - Preliminary file drag and drop support.
 
 Fri Jun 12 23:29:44 1998  Marcel Baur  <mbaur@g26.ethz.ch>
         - Fixed GetDateFormat()->GetTimeFormat() for locale time.
@@ -73,3 +77,4 @@ Fri Dec 05 20:51:55 1997  Marcel Baur <mbaur@g26.ethz.ch>
           [README] [TODO] [ChangeLog]
         - Originals by Marcel Baur
 
+
diff --git a/programs/notepad/Makefile.in b/programs/notepad/Makefile.in
index 3d0cbad211b..581f40aa9da 100644
--- a/programs/notepad/Makefile.in
+++ b/programs/notepad/Makefile.in
@@ -16,7 +16,8 @@ MOSTSRCS = \
 	license.c \
 	main.c \
 	dialog.c \
-	language.c
+	language.c \
+	search.c
 
 # Some strings need addresses >= 0x10000
 STRINGSRCS = \
diff --git a/programs/notepad/search.c b/programs/notepad/search.c
new file mode 100644
index 00000000000..c6218dae54a
--- /dev/null
+++ b/programs/notepad/search.c
@@ -0,0 +1,56 @@
+/*
+ *  Notepad (search.c)
+ *  Copyright (C) 1999 by Marcel Baur
+ *  To be distributed under the Wine license
+ *
+ *  This file features Heuristic Boyer-Moore Text Search
+ *
+ *  Always:   - Buf is the Buffer containing the whole text
+ *  =======   - SP is the Search Pattern, which has to be found in Buf.
+ *
+ */
+
+ #include <win.h>
+ 
+ #define CHARSETSIZE 255
+  
+ int delta[CHARSETSIZE];
+ 
+ /* rightmostpos: return rightmost position of ch in szSP (or -1) */
+ int rightmostpos(char ch, LPSTR szSP, int nSPLen) {
+    int i = nSPLen;
+    while ((i>0) & (szSP[i]!=ch)) i--;
+    return(i);
+ }
+ 
+ /* setup_delta: setup delta1 cache */
+ void setup_delta(LPSTR szSP, int nSPLen) {
+    int i;
+    
+    for (i=0; i<CHARSETSIZE; i++) {
+       delta[i] = nSPLen;
+    }
+
+    for (i=0; i<nSPLen; i++) {
+       delta[szSP[i]] = (nSPLen - rightmostpos(szSP[i], szSP, nSPLen));
+    }
+ }
+
+ int bm_search(LPSTR szBuf, int nBufLen, LPSTR szSP, int nSPLen) {
+    int i = nSPLen;
+    int j = nSPLen;
+    
+    do {
+       if (szBuf[i] = szSP[j]) {
+         i--; j--;
+       } else {
+         if ((nSPLen-j+1) > delta[szBuf[i]]) {
+           i+= (nSPLen-j+1);
+         } else {
+           i+= delta[szBuf[i]];
+         }
+       }
+    } while (j>0 && i<=nBufLen);
+    return(i+1);
+ }
+