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irccolor2ansiesc.py

@@ -0,0 +1,63 @@
+import sys
+import re
+
+irc_to_ansi_map = {
+    '0': '15',
+    '1': '0',
+    '2': '18',
+    '3': '2',
+    '4': '196',
+    '5': '52',
+    '6': '92',
+    '7': '208',
+    '8': '226',
+    '9': '10',
+    '10': '45',
+    '11': '14',
+    '12': '12',
+    '13': '201',
+    '14': '243',
+    '15': '250',
+}
+
+def foreground(c):
+    if c == None:
+        return ''
+    return f'\033[38;5;{c}m'
+
+def background(c):
+    if c == None:
+        return ''
+    return f'\033[48;5;{c}m'
+
+def reset():
+    return f'\033[0m'
+
+_IRC_COLOR_PAT = re.compile(r'\x03(\d+),(\d+)')
+
+#print(f'{background(201)}{foreground(45)}nigger')
+
+def main():
+    if len(sys.argv) != 2:
+        print('./irccolor2ansiesc.py <ascii>')
+        exit()
+    with open(sys.argv[1], mode='r', errors='replace') as ascii_handle:
+        for line in ascii_handle:
+            line = line.strip('\r\n')
+            bits = line.split('\x03')
+            for bit in bits:
+                bit = "\x03" + bit
+                res = _IRC_COLOR_PAT.findall(bit)
+                if len(res) == 1:
+                    fg,bg = res[0]
+                    fg = irc_to_ansi_map.get(fg, None)
+                    bg = irc_to_ansi_map.get(bg, None)
+                    pat = r'[\x02\x0F\x16\x1D\x1F]|\x03(\d{,2}(,\d{,2})?)?'
+                    stripped = re.sub(pat, '', bit)
+                    print(f"{foreground(fg)}{background(bg)}{stripped}{reset()}", end='')
+                else:
+                    print(bit, end='')
+            print(reset()+"\n", end='')
+
+if __name__ == '__main__':
+    main()