kakoune/rc/base/lint.kak

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declare-option -docstring %{shell command to which the path of a copy of the current buffer will be passed
The output returned by this command is expected to comply with the following format:
{filename}:{line}:{column}: {kind}: {message}} \
str lintcmd
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declare-option -hidden line-specs lint_flags
declare-option -hidden range-specs lint_errors
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define-command lint -docstring 'Parse the current buffer with a linter' %{
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%sh{
dir=$(mktemp -d "${TMPDIR:-/tmp}"/kak-lint.XXXXXXXX)
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mkfifo "$dir"/fifo
printf '%s\n' "evaluate-commands -no-hooks write $dir/buf"
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printf '%s\n' "evaluate-commands -draft %{
edit! -fifo $dir/fifo -debug *lint-output*
set-option buffer filetype make
set-option buffer make_current_error_line 0
hook -always -group fifo buffer BufCloseFifo .* %{
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nop %sh{ rm -r '$dir' }
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remove-hooks buffer fifo
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}
}"
{ # do the parsing in the background and when ready send to the session
eval "$kak_opt_lintcmd '$dir'/buf" | sort -t: -k2,2 -n > "$dir"/stderr
printf '%s\n' "evaluate-commands -client $kak_client echo 'linting done'" | kak -p "$kak_session"
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# Flags for the gutter:
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# stamp:l3|{red}█:l11|{yellow}█
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# Contextual error messages:
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# stamp:l1.c1,l1.c1|kind\:message:l2.c2,l2.c2|kind\:message
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awk -F: -v file="$kak_buffile" -v stamp="$kak_timestamp" '
/:[0-9]+:[0-9]+: ([Ff]atal )?[Ee]rror/ {
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flags = flags ":" $2 "|{red}█"
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}
/:[0-9]+:[0-9]+:/ {
if ($4 !~ /[Ee]rror/) {
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flags = flags ":" $2 "|{yellow}█"
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}
}
/:[0-9]+:[0-9]+:/ {
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kind = substr($4, 2)
errors = errors ":" $2 "." $3 "," $2 "." $3 "|" kind
# fix case where $5 is not the last field because of extra colons in the message
for (i=5; i<=NF; i++) errors = errors "\\:" $i
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errors = errors " (col " $3 ")"
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}
END {
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print "set-option \"buffer=" file "\" lint_flags %{" stamp flags "}"
gsub("~", "\\~", errors)
print "set-option \"buffer=" file "\" lint_errors %~" stamp errors "~"
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}
' "$dir"/stderr | kak -p "$kak_session"
cut -d: -f2- "$dir"/stderr | sed "s@^@$kak_bufname:@" > "$dir"/fifo
} >/dev/null 2>&1 </dev/null &
}
}
define-command -hidden lint-show %{
update-option buffer lint_errors
%sh{
desc=$(printf '%s\n' "$kak_opt_lint_errors" | sed -e 's/\([^\\]\):/\1\n/g' | tail -n +2 |
sed -ne "/^$kak_cursor_line\.[^|]\+|.*/ { s/^[^|]\+|//g; s/'/\\\\'/g; s/\\\\:/:/g; p; }")
if [ -n "$desc" ]; then
printf '%s\n' "info -anchor $kak_cursor_line.$kak_cursor_column '$desc'"
fi
} }
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define-command lint-enable -docstring "Activate automatic diagnostics of the code" %{
add-highlighter window flag_lines default lint_flags
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hook window -group lint-diagnostics NormalIdle .* %{ lint-show }
hook window -group lint-diagnostics WinSetOption lint_flags=.* %{ info; lint-show }
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}
define-command lint-disable -docstring "Disable automatic diagnostics of the code" %{
remove-highlighter window/hlflags_lint_flags
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remove-hooks window lint-diagnostics
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}
define-command lint-next-error -docstring "Jump to the next line that contains an error" %{
update-option buffer lint_errors
%sh{
printf '%s\n' "$kak_opt_lint_errors" | sed -e 's/\([^\\]\):/\1\n/g' | tail -n +2 | {
while IFS='|' read -r candidate rest
do
first_range=${first_range-$candidate}
if [ "${candidate%%.*}" -gt "$kak_cursor_line" ]; then
range=$candidate
break
fi
done
range=${range-$first_range}
if [ -n "$range" ]; then
printf '%s\n' "select $range"
else
printf 'echo -markup "{Error}no lint diagnostics"\n'
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fi
}
}}
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define-command lint-previous-error -docstring "Jump to the previous line that contains an error" %{
update-option buffer lint_errors
%sh{
printf '%s\n' "$kak_opt_lint_errors" | sed -e 's/\([^\\]\):/\1\n/g' | tail -n +2 | sort -t. -k1,1 -rn | {
while IFS='|' read -r candidate rest
do
first_range=${first_range-$candidate}
if [ "${candidate%%.*}" -lt "$kak_cursor_line" ]; then
range=$candidate
break
fi
done
range=${range-$first_range}
if [ -n "$range" ]; then
printf '%s\n' "select $range"
else
printf 'echo -markup "{Error}no lint diagnostics"\n'
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fi
}
}}