closer color matching

--HG--
branch : pmacs2

color.py

@@ -28,6 +28,28 @@ def add_color(name, value, abbrev):
     ascii_map[abbrev]   = name
     rev_ascii_map[name] = abbrev
 
+def iter256():
+    for r in range(0, 6):
+        for g in range(0, 6):
+            for b in range(0, 6):
+                if r >= g and g > b: name = 'yellow'
+                elif r >= b and b - g > 1: name = 'magenta'
+
+                elif b >= g and g - r > 2: name = 'cyan'
+                elif b >= r and r > g: name = 'magenta'
+
+                elif g >= r and r - b > 2: name = 'yellow'
+                elif g >= b and b - r > 1: name = 'cyan'
+
+                elif r > b and r > g: name = 'red'
+                elif g > b and g > r: name = 'green'
+                elif b > r and b > g: name = 'blue'
+
+                else: continue
+
+                yield (name, r, g, b)
+    raise StopIteration
+
 def color256(name, fallback, abbrev, r, g, b):
     name2   = '%s%d%d%d' % (name, r, g, b)
     abbrev2 = '%s%d%d%d' % (abbrev, r, g, b)
@@ -84,18 +106,8 @@ def init():
             value = curses.COLOR_WHITE
         add_color(name2, value, abbrev2)
 
-    for i in range(1, 6):
+    for name, r, g, b in iter256():
-        for j in range(0, i):
+        color256(name, colors[name], rev_ascii_map[name], r, g, b)
-            for k in range(0, i):
-                color256('red', curses.COLOR_RED, 'r', i, j, k)
-                color256('green', curses.COLOR_GREEN, 'g', j, i, k)
-                color256('blue', curses.COLOR_BLUE, 'b', j, k, i)
-
-    for i in range(1, 6):
-        for j in range(0, i):
-            color256('yellow', curses.COLOR_YELLOW, 'y', i, i, j)
-            color256('cyan', curses.COLOR_CYAN, 'c', j, i, i)
-            color256('magenta', curses.COLOR_MAGENTA, 'm', i, j, i)
 
 def build(fg, bg, *attr):
     v = curses.A_NORMAL | pairs(fg, bg)

mode/colortest.py

@@ -1,3 +1,4 @@
+import color
 from mode import Fundamental
 from lex import Grammar, PatternRule
 
@@ -17,17 +18,20 @@ def abc(name, r, g, b):
     ColortestGrammar.rules.append(PatternRule('z-' + name2, name2))
     Colortest.colors['z-' + name2] = (name2, 'default')
 
-for i in range(1, 6):
+for name, r, g, b in color.iter256():
-    for j in range(0, i):
+    abc(name, r, g, b)
-        for k in range(0, i):
-            abc('red', i, j, k)
-            abc('green', j, i, k)
-            abc('blue', j, k, i)
 
-for i in range(1, 6):
+#for i in range(1, 6):
-    for j in range(0, i):
+#    for j in range(0, i):
-        abc('yellow', i, i, j)
+#        for k in range(0, i):
-        abc('cyan', j, i, i)
+#            abc('red', i, j, k)
-        abc('magenta', i, j, i)
+#            abc('green', j, i, k)
+#            abc('blue', j, k, i)
+#
+#for i in range(1, 6):
+#    for j in range(0, i):
+#        abc('yellow', i, i, j)
+#        abc('cyan', j, i, i)
+#        abc('magenta', i, j, i)
 
 install = Colortest.install