68 lines
1.7 KiB
Python
Executable File
68 lines
1.7 KiB
Python
Executable File
#!/usr/bin/env python3
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import sys
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# 取自 xterm 256 色表
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def xterm_colors():
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colors = []
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# 0-15: 系統顏色（略過）
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for i in range(16):
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colors.append((0, 0, 0)) # dummy
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# 16–231: 6x6x6 color cube
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levels = [0x00, 0x5f, 0x87, 0xaf, 0xd7, 0xff]
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for r in levels:
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for g in levels:
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for b in levels:
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colors.append((r, g, b))
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# 232–255: grayscale ramp
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for gray in range(8, 248, 10):
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colors.append((gray, gray, gray))
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return colors
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def hex_to_rgb(hexcode):
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hexcode = hexcode.lstrip('#')
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if len(hexcode) != 6:
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raise ValueError("請輸入有效的 HEX 色碼，例如 #566177")
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r = int(hexcode[0:2], 16)
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g = int(hexcode[2:4], 16)
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b = int(hexcode[4:6], 16)
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return (r, g, b)
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def color_distance(c1, c2):
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return sum((a - b) ** 2 for a, b in zip(c1, c2))
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def find_nearest_xterm_color(hexcode):
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rgb = hex_to_rgb(hexcode)
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colors = xterm_colors()
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best_index = 16 # 開始於 16（跳過前 16 個）
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best_distance = float('inf')
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for i in range(16, 256):
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dist = color_distance(rgb, colors[i])
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if dist < best_distance:
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best_index = i
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best_distance = dist
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return best_index, colors[best_index]
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def main():
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if len(sys.argv) != 2:
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print("使用方式：hex2xterm.py #RRGGBB")
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return
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hexcode = sys.argv[1]
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try:
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idx, rgb = find_nearest_xterm_color(hexcode)
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print(f"最接近的 Xterm 色碼為：{idx}")
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print(f"Xterm RGB：#{rgb[0]:02X}{rgb[1]:02X}{rgb[2]:02X}")
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except Exception as e:
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print(f"錯誤：{e}")
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if __name__ == "__main__":
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main()
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