415 lines
14 KiB
Plaintext
415 lines
14 KiB
Plaintext
declare-option \
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-docstring %{
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The shell command used by lint-buffer and lint-selections.
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It will be given the path to a file containing the text to be
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linted, and must produce output in the format:
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{filename}:{line}:{column}: {kind}: {message}
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If the 'kind' field contains 'error', the message is treated
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as an error, otherwise it is assumed to be a warning.
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} \
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str lintcmd
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declare-option -hidden line-specs lint_flags
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declare-option -hidden line-specs lint_messages
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declare-option -hidden int lint_error_count
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declare-option -hidden int lint_warning_count
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define-command \
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-hidden \
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-params 1 \
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-docstring %{
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lint-cleaned-selections <linter>: Check each selection with <linter>.
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Assumes selections all have anchor before cursor, and that
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%val{selections} and %val{selections_desc} are in the same order.
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} \
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lint-cleaned-selections \
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%{
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# Clear the current contents of the various options.
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set-option buffer lint_flags %val{timestamp}
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set-option buffer lint_messages %val{timestamp}
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set-option buffer lint_error_count 0
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set-option buffer lint_warning_count 0
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# Create a temporary directory to keep all our state.
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evaluate-commands %sh{
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# This is going to come in handy later.
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kakquote() { printf "%s" "$*" | sed "s/'/''/g; 1s/^/'/; \$s/\$/'/"; }
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# Before we clobber our arguments,
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# let's record the lintcmd we were given.
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lintcmd="$1"
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# Some linters care about the name or extension
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# of the file being linted, so we'll store the text we want to lint
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# in a file with the same name as the original buffer.
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filename="${kak_buffile##*/}"
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# A directory to keep all our temporary data.
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dir=$(mktemp -d "${TMPDIR:-/tmp}"/kak-lint.XXXXXXXX)
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# A fifo to send the results back to a Kakoune buffer.
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# FIXME: Should we put the lint output in toolsclient?
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mkfifo "$dir"/fifo
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printf '%s\n' "evaluate-commands -draft %{
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edit! -fifo $(kakquote "$dir/fifo") -debug *lint-output*
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set-option buffer filetype make
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set-option buffer make_current_error_line 0
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}"
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# Write all the selection descriptions to files.
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eval set -- "$kak_selections_desc"
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i=0
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for desc; do
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mkdir -p "$dir"/sel-"$i"
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printf "%s" "$desc" > "$dir"/sel-$i/desc
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i=$(( i + 1 ))
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done
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# Write all the selection contents to files.
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eval set -- "$kak_quoted_selections"
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i=0
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for text; do
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# The selection text needs to be stored in a subdirectory,
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# so we can be sure the filename won't clash with one of ours.
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mkdir -p "$dir"/sel-"$i"/text/
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printf "%s" "$text" > "$dir"/sel-$i/text/"$filename"
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i=$(( i + 1 ))
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done
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# We do redirection trickiness to record stderr from
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# this background task and route it back to Kakoune,
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# but shellcheck isn't a fan.
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# shellcheck disable=SC2094
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({ # do the parsing in the background and when ready send to the session
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for selpath in "$dir"/sel-*; do
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# Read in the line and column offset of this selection.
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IFS=".," read -r start_line start_byte _ < "$selpath"/desc
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# Run the linter, and record the exit-code.
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eval "$lintcmd '$selpath/text/$filename'" |
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sort -t: -k2,2 -n |
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awk \
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-v line_offset=$(( start_line - 1 )) \
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-v first_line_byte_offset=$(( start_byte - 1 )) \
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'
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BEGIN { OFS=":"; FS=":" }
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/:[1-9][0-9]*:[1-9][0-9]*:/ {
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$1 = ENVIRON["kak_bufname"]
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if ( $2 == 1 ) {
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$3 += first_line_byte_offset
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}
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$2 += line_offset
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print $0
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}
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' >>"$dir"/result
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done
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# Load all the linter messages into Kakoune options.
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# Inside this block, shellcheck warns us that the shell doesn't
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# need backslash-continuation chars in a single-quoted string,
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# but awk still needs them.
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# shellcheck disable=SC1004
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awk -v file="$kak_buffile" -v client="$kak_client" '
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function kakquote(text) {
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# \x27 is apostrophe, escaped for shell-quoting reasons.
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gsub(/\x27/, "\x27\x27", text)
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return "\x27" text "\x27"
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}
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BEGIN {
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OFS=":"
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FS=":"
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error_count = 0
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warning_count = 0
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}
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/:[1-9][0-9]*:[1-9][0-9]*:/ {
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# Remember that an error or a warning occurs on this line..
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if ($4 ~ /[Ee]rror/) {
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# We definitely have an error on this line.
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flags_by_line[$2] = "{Error}!"
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error_count++
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} else if (flags_by_line[$2] ~ /Error/) {
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# We have a warning on this line,
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# but we already have an error, so do nothing.
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warning_count++
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} else {
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# We have a warning on this line,
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# and no previous error.
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flags_by_line[$2] = "{Information}?"
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warning_count++
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}
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# The message starts with the severity indicator.
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msg = substr($4, 2)
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# fix case where $5 is not the last field
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# because of extra colons in the message
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for (i=5; i<=NF; i++) msg = msg ":" $i
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# Mention the column where this problem occurs,
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# so that information is not lost.
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msg = msg "(col " $3 ")"
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# Messages will be stored in a line-specs option,
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# and each record in the option uses "|"
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# as a field delimiter, so we need to escape them.
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gsub(/\|/, "\\|", msg)
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if ($2 in messages_by_line) {
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# We already have a message on this line,
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# so append our new message.
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messages_by_line[$2] = messages_by_line[$2] "\n" msg
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} else {
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# A brand-new message on this line.
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messages_by_line[$2] = msg
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}
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}
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END {
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for (line in flags_by_line) {
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flag = flags_by_line[line]
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print "set-option -add " \
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kakquote("buffer=" file) " " \
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"lint_flags " \
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kakquote(line "|" flag)
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}
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for (line in messages_by_line) {
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msg = messages_by_line[line]
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print "set-option -add " \
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kakquote("buffer=" file) " " \
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"lint_messages " \
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kakquote(line "|" msg)
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}
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print "set-option " \
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kakquote("buffer=" file) " " \
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"lint_error_count " \
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error_count
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print "set-option " \
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kakquote("buffer=" file) " " \
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"lint_warning_count " \
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warning_count
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}
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' "$dir"/result | kak -p "$kak_session"
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# Send any linting errors to the debug buffer,
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# for visibility.
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if [ -s "$dir"/stderr ]; then
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# Errors were detected!"
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printf "echo -debug Linter errors: <<<\n"
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while read -r LINE; do
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printf "echo -debug %s\n" "$(kakquote " $LINE")"
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done < "$dir"/stderr
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printf "echo -debug >>>\n"
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# FIXME: When #3254 is fixed, this can become a "fail"
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printf "eval -client %s echo -markup {Error}%s\n" \
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"$kak_client" \
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"lint failed, see *debug* for details"
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else
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# No errors detected, show the results.
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printf "eval -client %s lint-show-counters" \
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"$kak_client"
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fi | kak -p "$kak_session"
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# We are done here. Send the results to Kakoune,
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# and clean up.
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cat "$dir"/result > "$dir"/fifo
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rm -rf "$dir"
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} & ) >"$dir"/stderr 2>&1 </dev/null
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}
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}
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define-command \
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-params 0..2 \
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-docstring %{
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lint-selections [<switches>]: Check each selection with a linter.
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Switches:
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-command <cmd> Use the given linter.
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If not given, the lintcmd option is used.
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} \
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lint-selections \
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%{
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evaluate-commands -draft %{
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# Make sure all the selections are "forward" (anchor before cursor)
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execute-keys <a-:>
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# Make sure the selections are in document order.
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evaluate-commands %sh{
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printf "select "
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printf "%s\n" "$kak_selections_desc" |
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tr ' ' '\n' |
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sort -n -t. |
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tr '\n' ' '
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}
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evaluate-commands %sh{
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# This is going to come in handy later.
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kakquote() { printf "%s" "$*" | sed "s/'/''/g; 1s/^/'/; \$s/\$/'/"; }
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if [ "$1" = "-command" ]; then
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if [ -z "$2" ]; then
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echo 'fail -- -command option requires a value'
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exit 1
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fi
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lintcmd="$2"
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elif [ -n "$1" ]; then
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echo "fail -- Unrecognised parameter $(kakquote "$1")"
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exit 1
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elif [ -z "${kak_opt_lintcmd}" ]; then
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echo 'fail The lintcmd option is not set'
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exit 1
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else
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lintcmd="$kak_opt_lintcmd"
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fi
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printf 'lint-cleaned-selections %s\n' "$(kakquote "$lintcmd")"
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}
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}
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}
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define-command \
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-docstring %{
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lint-buffer: Check the current buffer with a linter.
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Set the lintcmd option to control which linter is used.
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} \
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lint-buffer \
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%{
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evaluate-commands -draft %{
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execute-keys '%'
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lint-cleaned-selections %opt{lintcmd}
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}
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}
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alias global lint lint-buffer
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define-command -hidden lint-show %{
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update-option buffer lint_messages
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evaluate-commands %sh{
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# This is going to come in handy later.
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kakquote() { printf "%s" "$*" | sed "s/'/''/g; 1s/^/'/; \$s/\$/'/"; }
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eval set -- "${kak_quoted_opt_lint_messages}"
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shift # skip the timestamp
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while [ $# -gt 0 ]; do
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lineno=${1%%|*}
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msg=${1#*|}
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if [ "$lineno" -eq "$kak_cursor_line" ]; then
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printf "info -anchor %d.%d %s\n" \
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"$kak_cursor_line" \
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"$kak_cursor_column" \
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"$(kakquote "$msg")"
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break
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fi
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shift
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done
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}
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}
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define-command -hidden lint-show-counters %{
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echo -markup "linting results: {Error} %opt{lint_error_count} error(s) {Information} %opt{lint_warning_count} warning(s) "
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}
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define-command lint-enable -docstring "Activate automatic diagnostics of the code" %{
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add-highlighter window/lint flag-lines default lint_flags
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hook window -group lint-diagnostics NormalIdle .* %{ lint-show }
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hook window -group lint-diagnostics WinSetOption lint_flags=.* %{ info; lint-show }
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}
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define-command lint-disable -docstring "Disable automatic diagnostics of the code" %{
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remove-highlighter window/lint
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remove-hooks window lint-diagnostics
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}
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# FIXME: Is there some way we can re-use make-next-error
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# instead of re-implementing it?
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define-command \
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-docstring "Jump to the next line that contains a lint message" \
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lint-next-message \
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%{
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update-option buffer lint_messages
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evaluate-commands %sh{
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# This is going to come in handy later.
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kakquote() { printf "%s" "$*" | sed "s/'/''/g; 1s/^/'/; \$s/\$/'/"; }
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eval "set -- ${kak_quoted_opt_lint_messages}"
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shift
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if [ "$#" -eq 0 ]; then
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printf 'fail no lint messages'
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exit
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fi
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for lint_message; do
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lineno="${lint_message%%|*}"
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msg="${lint_message##*|}"
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if [ "$lineno" -gt "$kak_cursor_line" ]; then
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printf "execute-keys %dg\n" "$lineno"
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printf "info -anchor %d.%d %s\n" \
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"$lineno" "1" "$(kakquote "$msg")"
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break
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fi
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done
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# FIXME: should we wrap around like make-next-error?
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}
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}
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# FIXME: Is there some way we can re-use make-previous-error
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# instead of re-implementing it?
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define-command \
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-docstring "Jump to the previous line that contains a lint message" \
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lint-previous-message \
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%{
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update-option buffer lint_messages
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evaluate-commands %sh{
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# This is going to come in handy later.
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kakquote() { printf "%s" "$*" | sed "s/'/''/g; 1s/^/'/; \$s/\$/'/"; }
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eval "set -- ${kak_quoted_opt_lint_messages}"
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shift
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if [ "$#" -eq 0 ]; then
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printf 'fail no lint messages'
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exit
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fi
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last_lineno="$kak_cursor_line"
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last_msg="no previous message"
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for lint_message; do
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lineno="${lint_message%%|*}"
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msg="${lint_message##*|}"
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if [ "$lineno" -ge "${kak_cursor_line}" ]; then
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printf "execute-keys %dg\n" "$last_lineno"
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printf "info -anchor %d.%d %s\n" \
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"$lineno" "1" "$(kakquote "$last_msg")"
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break
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fi
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last_lineno="$last_lineno"
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last_msg="$msg"
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done
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# FIXME: should we wrap around like make-previous-error?
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}
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}
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