mirror of
https://github.com/notwa/rc
synced 2024-05-18 17:53:23 -07:00
88 lines
2.4 KiB
Bash
Executable File
88 lines
2.4 KiB
Bash
Executable File
#!/usr/bin/env sh
|
|
# YES_ZSH YES_BASH YES_DASH YES_ASH
|
|
|
|
shcom() { ### @-
|
|
### comment out text from stdin and wrap it in a markdown blockquote
|
|
### for docstrings. this contains some extra logic for
|
|
### handling already-commented and already-quoted text.
|
|
### this allows `shcom` to be used with vim's visual selections
|
|
### to update existing code examples.
|
|
###
|
|
### as a simple example, `echo hey | shcom` produces, verbatim:
|
|
###
|
|
### ```
|
|
### hey
|
|
### ```
|
|
[ $# -le 0 ] || { printf "%s\n" "$0: too many arguments" >&2; return 1; }
|
|
local delim="#""#""#" block='```'
|
|
local ret=0 opened=0 closed=0 seen_open=0 seen_close=0 left='' right=''
|
|
|
|
while IFS= read -r line; do
|
|
|
|
case "$line" in
|
|
*"$delim"*)
|
|
left="${line%%$delim*}"
|
|
right="${line#*$delim}"
|
|
left="${left#${left%%[! ]*}}" # ltrim
|
|
[ -z "$left" ] || { printf 'error: ignoring text before %s delimiter\n' "$delim" >&2; ret=1; }
|
|
right="${right# }" # ltrim one space
|
|
;;
|
|
|
|
*)
|
|
left=''
|
|
right="$line"
|
|
;;
|
|
esac
|
|
|
|
case "$right" in
|
|
@-*|@*-*|@*)
|
|
printf 'warning: passing through "at" line %s\n' "$delim" >&2
|
|
printf '%s\n' "$line"
|
|
continue;;
|
|
esac
|
|
|
|
if [ -z "$right" ]; then
|
|
if [ $opened != 0 ]; then
|
|
printf ' %s\n' "$delim"
|
|
fi
|
|
continue
|
|
fi
|
|
|
|
line="$right"
|
|
|
|
case "$line" in
|
|
*"$block"*)
|
|
left="${line%%$block*}"
|
|
right="${line#*$block}"
|
|
[ -z "$left" ] || { printf 'error: ignoring text before %s delimiter\n' "$block" >&2; ret=1; }
|
|
[ "${#right}" = 0 ] || printf 'warning: text after %s delimiter\n' "$block" >&2
|
|
if [ $seen_open = 0 ]; then
|
|
seen_open=1
|
|
elif [ $seen_close = 0 ]; then
|
|
seen_close=1
|
|
else
|
|
printf 'error: block quote already opened and closed\n' >&2
|
|
ret=1
|
|
fi
|
|
;;
|
|
|
|
*)
|
|
if [ $opened = 0 ]; then
|
|
printf ' %s ```\n' "$delim"
|
|
opened=1
|
|
fi
|
|
printf ' %s %s\n' "$delim" "$line"
|
|
;;
|
|
esac
|
|
|
|
done
|
|
|
|
if [ $opened != 0 ] && [ $closed = 0 ]; then
|
|
printf ' %s %s\n' "$delim" "$block"
|
|
fi
|
|
|
|
return $ret
|
|
}
|
|
|
|
[ -n "${preload+-}" ] || shcom "$@"
|