Initial commit

colour.tex

+\def\c#1#2#3#4{% color fg name alt
+  \special{color push rgb #1}%
+  #3%
+  \kern .5em
+  \hbox to 3em{%
+    \vrule width 3em height 8pt depth 2pt
+    \hss
+    \hbox to 3em{\special{color pop}\special{color push rgb #2}\hfil#4\hfil}}
+  \special{color pop}%
+}%
+
+\font\f="Courier" at 10pt
+\font\hf=cmr17
+
+\footline={}
+
+\hoffset=-1in
+\hsize=210mm
+
+\centerline{\hf XTerm colour codes}
+\vskip 18pt
+
+\f
+\tabskip=0pt plus 1fill
+\halign to \hsize{%
+\vrule width 0pt height 10pt depth 5pt
+#\quad\tabskip=0pt&
+#\quad&#\quad&#\quad&#\quad
+&#\tabskip=0pt plus 1fill\cr
+\input coldata.tex
+}
+\bye

colours.py

+import sys
+
+def ff(n):
+    return [0x00, 0x5f, 0x87, 0xaf, 0xd7, 0xff][n]
+
+def c():
+    columns = 6
+    rows = 216 / columns
+    for row in range(0, rows):
+        items = []
+        for col in range(0, columns):
+            c = col * rows + row
+
+            red = ff(c // 36)
+            green = ff((c // 6) % 6)
+            blue = ff(c % 6)
+
+            grey = .21 * red + .71 * green + .07 * blue
+            fgcolor = (1, 1, 1)  if grey < 128 else (0, 0, 0)
+
+            name = '%02x%02x%02x' % (red, green, blue)
+            alt = '%d' % (16 + c,)
+            items.append('\\c{%(r)f %(g)f %(b)f}'
+                             '{%(fr)f %(fg)f %(fb)f}'
+                             '{%(name)s}{%(alt)s}'
+                             % {'r': red / 255.0,
+                                'g': green / 255.0,
+                                'b': blue /  255.0,
+                                'fr': fgcolor[0], 'fg': fgcolor[1],
+                                'fb': fgcolor[2],
+                                'name': name,
+                                'alt': alt})
+            
+        
+        sys.stdout.write('%s\\cr\n' % ('&'.join(items),))
+
+
+if __name__ == '__main__':
+    c()
+