From 7f451cbd0fbcd54f465238e1ce5f43f83721c901 Mon Sep 17 00:00:00 2001
From: dshaligram <dshaligram@c06c8d41-db1a-0410-9941-cceddc491573>
Date: Wed, 8 Nov 2006 10:57:10 +0000
Subject: Fixed level-map brokenness when using the DEC character set on Linux.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/branches/stone_soup@364 c06c8d41-db1a-0410-9941-cceddc491573
---
 crawl-ref/source/initfile.cc |  2 +-
 crawl-ref/source/view.cc     | 46 +++++++++++++++++++++++++++++++-------------
 2 files changed, 34 insertions(+), 14 deletions(-)

diff --git a/crawl-ref/source/initfile.cc b/crawl-ref/source/initfile.cc
index f95685b9f1..ce56d5b0fc 100644
--- a/crawl-ref/source/initfile.cc
+++ b/crawl-ref/source/initfile.cc
@@ -1289,7 +1289,7 @@ void parse_option_line(const std::string &str, bool runscript)
     else if (key.find("cset") == 0)
     {
         std::string cset = key.substr(4);
-        if (cset[0] == '_')
+        if (!cset.empty() && cset[0] == '_')
             cset = cset.substr(1);
 
         char_set_type cs = NUM_CSET;
diff --git a/crawl-ref/source/view.cc b/crawl-ref/source/view.cc
index 2184acbf29..38bec13fb2 100644
--- a/crawl-ref/source/view.cc
+++ b/crawl-ref/source/view.cc
@@ -1803,6 +1803,29 @@ static int find_feature( const std::vector<coord_def>& features,
     return 0;
 }
 
+#ifdef USE_CURSES
+// NOTE: This affects libunix.cc draw state; use this just before setting
+// textcolour and drawing a character and call set_altcharset(false)
+// after you're done drawing.
+//
+static int cset_adjust(int raw)
+{
+    if (Options.char_set != CSET_ASCII) 
+    {
+        // switch to alternate char set for 8-bit characters:
+        set_altcharset( raw > 127 );
+
+        // shift the DEC line drawing set:
+        if (Options.char_set == CSET_DEC 
+            && raw >= 0xE0)
+        {
+            raw &= 0x7F;
+        }
+    }
+    return (raw);
+}
+#endif
+
 // show_map() now centers the known map along x or y.  This prevents
 // the player from getting "artificial" location clues by using the
 // map to see how close to the end they are.  They'll need to explore
@@ -1976,12 +1999,20 @@ void show_map( FixedVector<int, 2> &spec_place, bool travel_mode )
             if (i == 0 && j > 0)
                 gotoxy( 1, j + 1 );
 
+            int ch = buffer2[bufcount2 - 2];
+#ifdef USE_CURSES
+            ch = cset_adjust( ch );
+#endif
             textcolor( buffer2[bufcount2 - 1] );
-            putch( buffer2[bufcount2 - 2] );
+            putch(ch);
 #endif
         }
     }
 
+#ifdef USE_CURSES
+    set_altcharset(false);
+#endif
+
 #ifdef DOS_TERM
     puttext(1, 1, 80, 25, buffer2);
 #endif
@@ -3468,18 +3499,7 @@ void viewwindow(bool draw_it, bool do_updates)
                 for (count_x = 0; count_x < X_SIZE; count_x++)
                 {
 #ifdef USE_CURSES
-                    if (Options.char_set != CSET_ASCII) 
-                    {
-                        // switch to alternate char set for 8-bit characters:
-                        set_altcharset( (buffy[bufcount] > 127) );
-
-                        // shift the DEC line drawing set:
-                        if (Options.char_set == CSET_DEC 
-                            && buffy[bufcount] >= 0xE0)
-                        {
-                            buffy[bufcount] &= 0x7F;
-                        }
-                    }
+                    buffy[bufcount] = cset_adjust( buffy[bufcount] );
 #endif
                     textcolor( buffy[bufcount + 1] );
                     putch( buffy[bufcount] );
-- 
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