From ce4a32fe52ef09d8f5ff1dd22c001110902b60a2 Mon Sep 17 00:00:00 2001
From: toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>
Date: Wed, 25 Nov 2009 17:56:58 +0000
Subject: Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
 BUG:215923

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
---
 khtml/rendering/break_lines.cpp | 126 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 khtml/rendering/break_lines.cpp

(limited to 'khtml/rendering/break_lines.cpp')

diff --git a/khtml/rendering/break_lines.cpp b/khtml/rendering/break_lines.cpp
new file mode 100644
index 000000000..483455127
--- /dev/null
+++ b/khtml/rendering/break_lines.cpp
@@ -0,0 +1,126 @@
+#include <break_lines.h>
+#include <klibloader.h>
+#include "qcstring.h"
+#include <qtextcodec.h>
+#include <qcleanuphandler.h>
+#include <config.h>
+
+
+/* If HAVE_LIBTHAI is defined, libkhtml will link against 
+ * libthai since compile time. Otherwise it will try to 
+ * dlopen at run-time
+ *
+ * Ott Pattara Nov 14, 2004
+ */
+
+#ifndef HAVE_LIBTHAI
+typedef int (*th_brk_def)(const unsigned char*, int[], int);
+static th_brk_def th_brk;
+#else
+#include <thai/thailib.h>
+#include <thai/thbrk.h>
+#endif
+
+namespace khtml {
+    struct ThaiCache
+    {
+        ThaiCache() {
+            string = 0;
+            allocated = 0x400;
+            wbrpos = (int *) malloc(allocated*sizeof(int));
+            numwbrpos = 0;
+            numisbreakable = 0x400;
+            isbreakable = (int *) malloc(numisbreakable*sizeof(int));
+	    library = 0;
+        }
+        ~ThaiCache() {
+            free(wbrpos);
+            free(isbreakable);
+            if (library) library->unload();
+        }
+        const QChar *string;
+        int *wbrpos;
+        int *isbreakable;
+        int allocated;
+        int numwbrpos,numisbreakable;
+        KLibrary *library;
+    };
+    static ThaiCache *cache = 0;
+
+    void cleanup_thaibreaks()
+    {
+        delete cache;
+        cache = 0;
+#ifndef HAVE_LIBTHAI
+        th_brk = 0;
+#endif
+    }
+
+    bool isBreakableThai( const QChar *string, const int pos, const int len)
+    {
+        static QTextCodec *thaiCodec = QTextCodec::codecForMib(2259);
+	//printf("Entering isBreakableThai with pos = %d\n", pos);
+
+#ifndef HAVE_LIBTHAI
+	
+	KLibrary *lib = 0;
+
+        /* load libthai dynamically */
+	if (( !th_brk ) && thaiCodec  ) {
+	    printf("Try to load libthai dynamically...\n");
+            KLibLoader *loader = KLibLoader::self();
+            lib = loader->library("libthai");
+            if (lib && lib->hasSymbol("th_brk")) {
+                th_brk = (th_brk_def) lib->symbol("th_brk");
+            } else {
+                // indication that loading failed and we shouldn't try to load again
+		printf("Error, can't load libthai...\n");
+                thaiCodec = 0;
+                if (lib)
+                    lib->unload();
+            }
+        }
+
+        if (!th_brk ) {
+            return true;
+        }
+#endif
+
+	if (!cache ) {
+            cache = new ThaiCache;
+#ifndef HAVE_LIBTHAI
+            cache->library = lib;
+#endif
+	}
+
+        // build up string of thai chars
+        if ( string != cache->string ) {
+            //fprintf(stderr,"new string found (not in cache), calling libthai\n");
+            QCString cstr = thaiCodec->fromUnicode( QConstString(string,len).string());
+            //printf("About to call libthai::th_brk with str: %s",cstr.data());
+
+            cache->numwbrpos = th_brk((const unsigned char*) cstr.data(), cache->wbrpos, cache->allocated);
+            //fprintf(stderr,"libthai returns with value %d\n",cache->numwbrpos);
+            if (cache->numwbrpos > cache->allocated) {
+                cache->allocated = cache->numwbrpos;
+                cache->wbrpos = (int *)realloc(cache->wbrpos, cache->allocated*sizeof(int));
+                cache->numwbrpos = th_brk((const unsigned char*) cstr.data(), cache->wbrpos, cache->allocated);
+            }
+	    if ( len > cache->numisbreakable ) {
+		cache->numisbreakable=len;
+                cache->isbreakable = (int *)realloc(cache->isbreakable, cache->numisbreakable*sizeof(int));
+	    }
+	    for (int i = 0 ; i < len ; ++i) {
+		cache->isbreakable[i] = 0;
+	    }
+            if ( cache->numwbrpos > 0 ) {
+            	for (int i = cache->numwbrpos-1; i >= 0; --i) {
+                	cache->isbreakable[cache->wbrpos[i]] = 1;
+		}
+	    }
+            cache->string = string;
+        }
+	//printf("Returning %d\n", cache->isbreakable[pos]);
+	return cache->isbreakable[pos];
+    }
+}
-- 
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