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add 8 bit color support

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This commit is contained in:
bobsfriend12 2024-07-30 18:45:54 -06:00
parent 182f15d6dd
commit dbf53b4999
1 changed files with 80 additions and 3 deletions
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83
app/classes/shared/helpers.py
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@ -742,9 +742,6 @@ class Helpers:
return result
def gen_ansi_style(self, code):
term_bg = (39.536, 42.082, 63.618) # card-banner-bg
# TODO: 48;2 38;5 48;5
# Verify that colors has enough contrast
if code.find("\x1b[38;2;") > -1:
# Format: \x1b[38;2;85;255;255m
regex = r"(\d{1,3})[;,m]"
@ -785,7 +782,36 @@ class Helpers:
+ text_color
+ "'",
)
if code.find("\x1b[38;5;") > -1:
# Format: \x1b[38;5m
regex = r"(\d{1,3})[;,m]"
matches = re.findall(regex, code)
return (
"ansi-8bit",
"style='color: rgb" + str(self.ansi_8bit_to_rgb(int(matches[2]))) + "'",
)
if code.find("\x1b[48;5") > -1:
# Format: \x1b[48;5m
regex = r"(\d{1,3})[;,m]"
matches = re.findall(regex, code)
# Determine if white or black has higher contrast
text_color = "white"
if self.get_contrast(
(255, 255, 255), self.ansi_8bit_to_rgb(int(matches[2]))
) < self.get_contrast((0, 0, 0), self.ansi_8bit_to_rgb(int(matches[2]))):
text_color = "black"
return (
"ansi-bg-8bit",
"style='background-color: rgb"
+ str(self.ansi_8bit_to_rgb(int(matches[2])))
+ "; color: "
+ text_color
+ "'",
)
if code == "\x1b[30m":
return ("ansi-black", "style='color: black'")
if code == "\x1b[31m":
@ -891,6 +917,7 @@ class Helpers:
)
return ("ansi-reset", "")
# Once browser support is there we should use color: color-contrast() instead of this.
@staticmethod
def get_contrast(color1, color2):
def get_luminence(color):
@ -914,6 +941,56 @@ class Helpers:
return (lum2 + 0.05) / (lum1 + 0.05)
@staticmethod
def ansi_8bit_to_rgb(ansi_code):
if 0 <= ansi_code <= 7:
# Standard colors
colors = [
(0, 0, 0), # Black
(128, 0, 0), # Red
(0, 128, 0), # Green
(128, 128, 0), # Yellow
(0, 0, 128), # Blue
(128, 0, 128), # Magenta
(0, 128, 128), # Cyan
(192, 192, 192), # White
]
return colors[ansi_code]
elif 8 <= ansi_code <= 15:
# High-intensity colors
colors = [
(128, 128, 128), # Bright Black (Gray)
(255, 0, 0), # Bright Red
(0, 255, 0), # Bright Green
(255, 255, 0), # Bright Yellow
(0, 0, 255), # Bright Blue
(255, 0, 255), # Bright Magenta
(0, 255, 255), # Bright Cyan
(255, 255, 255), # Bright White
]
return colors[ansi_code - 8]
elif 16 <= ansi_code <= 231:
# 216 color cube
ansi_code -= 16
r = (ansi_code // 36) % 6 * 51
g = (ansi_code // 6) % 6 * 51
b = (ansi_code % 6) * 51
return (r, g, b)
elif 232 <= ansi_code <= 255:
# Grayscale colors
level = (ansi_code - 232) * 10 + 8
return (level, level, level)
else:
return (
0,
0,
0,
) # Default to black
@staticmethod
def validate_traversal(base_path, filename):
logger.debug(f'Validating traversal ("{base_path}", "{filename}")')