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// Copyright 2018 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package status
import (
"bufio"
"fmt"
"io"
"regexp"
"strconv"
"strings"
)
var katiError = regexp.MustCompile(`^(\033\[1m)?[^ ]+:[0-9]+: (\033\[31m)?error:`)
var katiIncludeRe = regexp.MustCompile(`^(\[(\d+)/(\d+)] )?((including [^ ]+|initializing (build|packaging) system|finishing (build|packaging) rules|writing (build|packaging) rules) ...)$`)
var katiLogRe = regexp.MustCompile(`^\*kati\*: `)
var katiNinjaMissing = regexp.MustCompile("^[^ ]+ is missing, regenerating...$")
type katiOutputParser struct {
st ToolStatus
count int
total int
extra int
action *Action
buf strings.Builder
hasError bool
}
func (k *katiOutputParser) flushAction() {
if k.action == nil {
return
}
var err error
if k.hasError {
err = fmt.Errorf("makefile error")
}
k.st.FinishAction(ActionResult{
Action: k.action,
Output: k.buf.String(),
Error: err,
})
k.buf.Reset()
k.hasError = false
}
func (k *katiOutputParser) parseLine(line string) {
// Only put kati debug/stat lines in our verbose log
if katiLogRe.MatchString(line) {
k.st.Verbose(line)
return
}
if matches := katiIncludeRe.FindStringSubmatch(line); len(matches) > 0 {
k.flushAction()
k.count += 1
matches := katiIncludeRe.FindStringSubmatch(line)
if matches[2] != "" {
idx, err := strconv.Atoi(matches[2])
if err == nil && idx+k.extra != k.count {
k.extra = k.count - idx
k.st.SetTotalActions(k.total + k.extra)
}
} else {
k.extra += 1
k.st.SetTotalActions(k.total + k.extra)
}
if matches[3] != "" {
tot, err := strconv.Atoi(matches[3])
if err == nil && tot != k.total {
k.total = tot
k.st.SetTotalActions(k.total + k.extra)
}
}
k.action = &Action{
Description: matches[4],
}
k.st.StartAction(k.action)
} else if k.action != nil {
if katiError.MatchString(line) {
k.hasError = true
}
k.buf.WriteString(line)
k.buf.WriteString("\n")
} else {
// Before we've started executing actions from Kati
if line == "No need to regenerate ninja file" || katiNinjaMissing.MatchString(line) {
k.st.Status(line)
} else {
k.st.Print(line)
}
}
}
// KatiReader reads the output from Kati, and turns it into Actions and
// messages that are passed into the ToolStatus API.
func KatiReader(st ToolStatus, pipe io.ReadCloser) {
parser := &katiOutputParser{
st: st,
}
scanner := bufio.NewScanner(pipe)
scanner.Buffer(nil, 2*1024*1024)
for scanner.Scan() {
parser.parseLine(scanner.Text())
}
parser.flushAction()
if err := scanner.Err(); err != nil {
var buf strings.Builder
io.Copy(&buf, pipe)
st.Print(fmt.Sprintf("Error from kati parser: %s", err))
st.Print(buf.String())
}
st.Finish()
}
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