From 3a018d80cce16003ba15dc461a36699a4e5476a6 Mon Sep 17 00:00:00 2001
From: Wengier <wengierwu@yahoo.com>
Date: Tue, 16 Nov 2021 04:08:27 -0500
Subject: [PATCH] fix linebraks when copy DBCS text

---
 CHANGELOG           |  2 ++
 src/gui/sdlmain.cpp | 73 ++++++++++++++++++++++++++-------------------
 src/ints/mouse.cpp  |  8 ++++-
 3 files changed, 52 insertions(+), 31 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index f571f7279..f770579f8 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -76,6 +76,8 @@
   - Fixed possible crash with printing. (jamesbond3142)
   - Fixed possible freeze when shutting down Windows 9x
     after changing a CD image from the menu. (Wengier)
+  - Fixed linebreaks when copying text from a DBCS code
+    page in the TTF output. (Wengier)
   - Fixed TTF color issue with some DOS GUI programs by
     initializing the color scheme when with default
     COLORS= setting in EGA or VGA mode. (Wengier)
diff --git a/src/gui/sdlmain.cpp b/src/gui/sdlmain.cpp
index 03d959ca8..d5eac6f49 100644
--- a/src/gui/sdlmain.cpp
+++ b/src/gui/sdlmain.cpp
@@ -9309,34 +9309,8 @@ void PasteClipboard(bool bPressed) {
 #endif
 #endif
 
-#if defined(C_SDL2) || defined(MACOSX)
-bool CodePageGuestToHostUTF8(char *d/*CROSS_LEN*/,const char *s/*CROSS_LEN*/);
-void CopyClipboard(int all) {
-	uint16_t len=0;
-	char* text = (char *)(all==2?Mouse_GetSelected(0,0,currentWindowWidth-1-sdl.clip.x,currentWindowHeight-1-sdl.clip.y,(int)(currentWindowWidth-sdl.clip.x),(int)(currentWindowHeight-sdl.clip.y), &len):(all==1?Mouse_GetSelected(selscol, selsrow, selecol, selerow, -1, -1, &len):Mouse_GetSelected(mouse_start_x-sdl.clip.x,mouse_start_y-sdl.clip.y,mouse_end_x-sdl.clip.x,mouse_end_y-sdl.clip.y,sdl.clip.w,sdl.clip.h, &len)));
-    unsigned int k=0;
-    for (unsigned int i=0; i<len; i++)
-        if (text[i]&&text[i]!=13)
-            text[k++]=text[i];
-    text[k]=0;
-    std::string result="";
-    std::istringstream iss(text);
-    char temp[4096];
-    for (std::string token; std::getline(iss, token); ) {
-        if (CodePageGuestToHostUTF8(temp,token.c_str()))
-            result+=temp+std::string(1, 10);
-        else
-            result+=token+std::string(1, 10);
-    }
-    if (result.size()&&result.back()==10) result.pop_back();
-#if defined(C_SDL2)
-    SDL_SetClipboardText(result.c_str());
-#else
-    SetClipboard(result);
-#endif
-}
-#elif defined (WIN32)
-void CopyClipboard(int all) {
+#ifdef WIN32
+void CopyClipboardW(int all) {
 	uint16_t len=0;
 	const char* text = (char *)(all==2?Mouse_GetSelected(0,0,(int)(currentWindowWidth-1-sdl.clip.x),(int)(currentWindowHeight-1-sdl.clip.y),(int)(currentWindowWidth-sdl.clip.x),(int)(currentWindowHeight-sdl.clip.y), &len):(all==1?Mouse_GetSelected(selscol, selsrow, selecol, selerow, -1, -1, &len):Mouse_GetSelected(mouse_start_x-sdl.clip.x,mouse_start_y-sdl.clip.y,mouse_end_x-sdl.clip.x,mouse_end_y-sdl.clip.y,sdl.clip.w,sdl.clip.h, &len)));
 	if (OpenClipboard(NULL)&&EmptyClipboard()) {
@@ -9352,9 +9326,7 @@ void CopyClipboard(int all) {
 		CloseClipboard();
 	}
 }
-#endif
 
-#ifdef WIN32
 static BOOL WINAPI ConsoleEventHandler(DWORD event) {
     switch (event) {
     case CTRL_SHUTDOWN_EVENT:
@@ -9370,6 +9342,47 @@ static BOOL WINAPI ConsoleEventHandler(DWORD event) {
 }
 #endif
 
+#if defined(C_SDL2) || defined(MACOSX)
+bool CodePageGuestToHostUTF8(char *d/*CROSS_LEN*/,const char *s/*CROSS_LEN*/);
+void CopyClipboard(int all) {
+#ifdef WIN32
+    if (dos.loaded_codepage != 950 || !chinasea) {
+        CopyClipboardW(all);
+        return;
+    }
+#endif
+	uint16_t len=0;
+	char* text = (char *)(all==2?Mouse_GetSelected(0,0,currentWindowWidth-1-sdl.clip.x,currentWindowHeight-1-sdl.clip.y,(int)(currentWindowWidth-sdl.clip.x),(int)(currentWindowHeight-sdl.clip.y), &len):(all==1?Mouse_GetSelected(selscol, selsrow, selecol, selerow, -1, -1, &len):Mouse_GetSelected(mouse_start_x-sdl.clip.x,mouse_start_y-sdl.clip.y,mouse_end_x-sdl.clip.x,mouse_end_y-sdl.clip.y,sdl.clip.w,sdl.clip.h, &len)));
+#ifndef WIN32
+    unsigned int k=0;
+    for (unsigned int i=0; i<len; i++)
+        if (text[i]&&text[i]!=13)
+            text[k++]=text[i];
+    text[k]=0;
+#endif
+    std::string result="";
+    std::istringstream iss(text);
+    char temp[4096];
+    for (std::string token; std::getline(iss, token); ) {
+        if (CodePageGuestToHostUTF8(temp,token.c_str()))
+            result+=temp;
+        else
+            result+=token;
+        result+=std::string(1, 10);
+    }
+    if (result.size()&&result.back()==10) result.pop_back();
+#if defined(C_SDL2)
+    SDL_SetClipboardText(result.c_str());
+#else
+    SetClipboard(result);
+#endif
+}
+#elif defined (WIN32)
+void CopyClipboard(int all) {
+    CopyClipboardW(all);
+}
+#endif
+
 void PasteClipStop(bool bPressed) {
     if (!bPressed) return;
     strPasteBuffer = "";
diff --git a/src/ints/mouse.cpp b/src/ints/mouse.cpp
index de720f756..1c60ef002 100644
--- a/src/ints/mouse.cpp
+++ b/src/ints/mouse.cpp
@@ -766,7 +766,7 @@ const char* Mouse_GetSelected(int x1, int y1, int x2, int y2, int w, int h, uint
     if (ttfuse&&isDBCSCP()&&dbcs_sbcs&&!(c1==0&&c2==(int)(ttf.cols-1)&&r1==0&&r2==(int)(ttf.lins-1))) {
         ttf_cell *curAC = curAttrChar;
         for (unsigned int y = 0; y < ttf.lins; y++) {
-            if ((int)y>=r1&&(int)y<=r2)
+            if ((int)y>=r1&&(int)y<=r2) {
                 for (unsigned int x = 0; x < ttf.cols; x++)
                     if ((int)x>=c1&&(int)x<=c2&&curAC[rtl?ttf.cols-x-1:x].selected) {
                         if ((int)x==c1&&c1>0&&curAC[rtl?ttf.cols-x-1:x].skipped&&!curAC[rtl?ttf.cols-x-2:x-1].selected&&curAC[rtl?ttf.cols-x-2:x-1].doublewide) {
@@ -780,6 +780,12 @@ const char* Mouse_GetSelected(int x1, int y1, int x2, int y2, int w, int h, uint
                             text[len++]=result;
                         }
                     }
+                while (len>0&&text[len-1]==32) text[--len]=0;
+                if (y<r2) {
+                    text[len++]='\r';
+                    text[len++]='\n';
+                }
+            }
             curAC += ttf.cols;
         }
     } else