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implement weechat-style djb2 colour hashing

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jesopo 2019-11-18 13:51:55 +00:00
parent 3e54a631ee
commit a8b1bd95f7
1 changed files with 11 additions and 3 deletions
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14
src/utils/irc.py
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@ -41,10 +41,18 @@ def color(s: str, foreground: consts.IRCColor,
return "%s%s%s%s%s" % (consts.COLOR, foreground_s, background_s, s, return "%s%s%s%s%s" % (consts.COLOR, foreground_s, background_s, s,
consts.COLOR) consts.COLOR)
HASH_COLORS = list(range(2, 16)) HASH_STOP = ["_", "|", "["]
HASH_COLORS = [consts.CYAN, consts.PURPLE, consts.GREEN, consts.ORANGE,
consts.LIGHTBLUE, consts.TRANSPARENT, consts.LIGHTCYAN, consts.PINK,
consts.LIGHTGREEN, consts.BLUE]
def hash_colorize(s: str): def hash_colorize(s: str):
hash_code = sum(ord(c) for c in s.lower())%len(HASH_COLORS) hash = 5381
return color(s, consts.COLOR_CODES[HASH_COLORS[hash_code]]) for i, char in enumerate(s):
if char in HASH_STOP and 0 < i < (len(s)-1):
break
hash ^= (hash<<5)+(hash>>2)+ord(char)
return color(s, HASH_COLORS[hash%len(HASH_COLORS)])
def bold(s: str) -> str: def bold(s: str) -> str:
return "%s%s%s" % (consts.BOLD, s, consts.BOLD) return "%s%s%s" % (consts.BOLD, s, consts.BOLD)