list comprehension instead of map.

[xonotic/xonstat.git] / xonstat / util.py

diff --git a/xonstat/util.py b/xonstat/util.py
index 15565db1692d48ccf74aa5fa323c8681efcff35b..e34adfc2aa5268460a802c819677edd16d739178 100755 (executable)
--- a/xonstat/util.py
+++ b/xonstat/util.py
@@ -1,8 +1,10 @@
 import re
+from colorsys import rgb_to_hls, hls_to_rgb
+from cgi import escape as html_escape
 from datetime import datetime
 
-# Map of special chars to ascii from Quake's console.c.
-qfont_table = [
+# Map of special chars to ascii from Darkplace's console.c.
+_qfont_table = [
  '\0', '#',  '#',  '#',  '#',  '.',  '#',  '#',
  '#',  '\t', '\n', '#',  ' ',  '\r', '.',  '.',
  '[',  ']',  '0',  '1',  '2',  '3',  '4',  '5',
@@ -38,57 +40,66 @@ qfont_table = [
  'x',  'y',  'z',  '{',  '|',  '}',  '~',  '<'
 ]
 
+# Hex-colored spans for decimal color codes ^0 - ^9
+_dec_spans = [
+ "<span style='color:#333333'>",
+ "<span style='color:#FF0000'>",
+ "<span style='color:#33FF00'>",
+ "<span style='color:#FFFF00'>",
+ "<span style='color:#3366FF'>",
+ "<span style='color:#33FFFF'>",
+ "<span style='color:#FF3366'>",
+ "<span style='color:#FFFFFF'>",
+ "<span style='color:#999999'>",
+ "<span style='color:#666666'>"
+]
+
+# Color code patterns
+_all_colors = re.compile(r'\^(\d|x[\dA-Fa-f]{3})')
+_dec_colors = re.compile(r'\^(\d)')
+_hex_colors = re.compile(r'\^x([\dA-Fa-f])([\dA-Fa-f])([\dA-Fa-f])')
+
+# On a light scale of 0 (black) to 1.0 (white)
+_contrast_threshold = 0.5
+
 
 def qfont_decode(qstr=''):
+    """ Convert the qfont characters in a string to ascii.
     """
-    Convert the qfont characters in a string to ascii.
-    """
-    if qstr is None:
+    if qstr == None:
         qstr = ''
-
     chars = []
     for c in qstr:
-        if c >= u'\ue000' and c <= u'\ue0ff':
-            c = qfont_table[ord(c) - 0xe000]
+        if u'\ue000' <= c <= u'\ue0ff':
+            c = _qfont_table[ord(c) - 0xe000]
         chars.append(c)
     return ''.join(chars)
 
 
-def strip_colors(str=''):
-    if str is None:
-        str = ''
-
-    str = re.sub(r'\^x\w\w\w', '', str)
-    str = re.sub(r'\^\d', '', str)
-    return str
-
-
-def html_colors(str=''):
-    if str is None:
-        str = ''
-
-    orig = str
-
-    # "downsample" the given UTF-8 characters to ASCII
-    str = qfont_decode(str)
-
-    str = re.sub(r'\^x(\w)(\w)(\w)', 
-            "<span style='color:#\g<1>\g<1>\g<2>\g<2>\g<3>\g<3>'>", str)
-    str = re.sub(r'\^1', "<span style='color:#FF9900'>", str)
-    str = re.sub(r'\^2', "<span style='color:#33FF00'>", str)
-    str = re.sub(r'\^3', "<span style='color:#FFFF00'>", str)
-    str = re.sub(r'\^4', "<span style='color:#3366FF'>", str)
-    str = re.sub(r'\^5', "<span style='color:#33FFFF'>", str)
-    str = re.sub(r'\^6', "<span style='color:#FF3366'>", str)
-    str = re.sub(r'\^7', "<span style='color:#FFFFFF'>", str)
-    str = re.sub(r'\^8', "<span style='color:#999999'>", str)
-    str = re.sub(r'\^9', "<span style='color:#666666'>", str)
-    str = re.sub(r'\^0', "<span style='color:#333333'>", str)
-
-    for span in range(len(re.findall(r'\^x\w\w\w|\^\d', orig))):
-        str += "</span>"
-
-    return str
+def strip_colors(qstr=''):
+    if qstr == None:
+        qstr = ''
+    return _all_colors.sub('', qstr)
+    
+    
+def hex_repl(match):
+    # Convert hex to 8 bits and to 0.0-1.0 scale
+    r = int(match.group(1) * 2, 16) / 255.
+    g = int(match.group(2) * 2, 16) / 255.
+    b = int(match.group(3) * 2, 16) / 255.
+    hue, light, satur = rgb_to_hls(r, g, b)
+    if light < _contrast_threshold:
+        light = _contrast_threshold
+    # Get new rgb in 0-255 scale
+    r, g, b = tuple([255 * i for i in hls_to_rgb(hue, light, satur)])
+    return '<span style="color:rgb({0},{1},{2})">'.format(r, g, b)
+
+
+def html_colors(qstr=''):
+    qstr = html_escape(qfont_decode(qstr).replace('^^', '^'))
+    html = _dec_colors.sub(lambda match: _dec_spans[int(match.group(1))], qstr)
+    html = _hex_colors.sub(hex_repl, html)
+    return html + "</span>" * len(_all_colors.findall(qstr))
 
 
 def page_url(page):