Situation: A terminal application. Requirement: Display nicely-wrapped
text. With colour codes in it. And that text might be indented to any
depth.
label = f"{indent}\U0010cc32{code}\U0010cc00 @{tweet['user']['screen_name']}: "
wrapper = textwrap.TextWrapper(
initial_indent=label,
subsequent_indent=indent + " " * 12,
width=shutil.get_terminal_size().columns,
break_long_words=False, break_on_hyphens=False, # Stop URLs from breaking
)
for line in tweet["full_text"].splitlines():
print(wrapper.fill(line)
.replace("\U0010cc32", "\x1b[32m\u2026")
.replace("\U0010cc00", "\u2026\x1b[0m")
)
wrapper.initial_indent = wrapper.subsequent_indent # For
subsequent lines, just indent them
The parameter "indent" is always some number of spaces (possibly
zero). If I simply include the escape codes in the label, their
characters will be counted, and the first line will be shorter. Rather
than mess with how textwrap defines text, I just replace the escape
codes *and one other character* with a placeholder. In the final
display, \U0010cc32 means "colour code 32 and an ellipsis", and
\U0010cc00 means "colour code 0 and an ellipsis", so textwrap
correctly counts them as one character each.
So what do you folks think? Is this a gloriously elegant way to
collapse nonprinting text, or is it a gross hacky mess that's going to
cause problems?
ChrisA
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