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// Copyright 2017 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 build
import (
"bufio"
"crypto/md5"
"fmt"
"io"
"io/ioutil"
"path/filepath"
"regexp"
"strconv"
"strings"
)
var spaceSlashReplacer = strings.NewReplacer("/", "_", " ", "_")
// genKatiSuffix creates a suffix for kati-generated files so that we can cache
// them based on their inputs. So this should encode all common changes to Kati
// inputs. Currently that includes the TARGET_PRODUCT, kati-processed command
// line arguments, and the directories specified by mm/mmm.
func genKatiSuffix(ctx Context, config Config) {
katiSuffix := "-" + config.TargetProduct()
if args := config.KatiArgs(); len(args) > 0 {
katiSuffix += "-" + spaceSlashReplacer.Replace(strings.Join(args, "_"))
}
if oneShot, ok := config.Environment().Get("ONE_SHOT_MAKEFILE"); ok {
katiSuffix += "-" + spaceSlashReplacer.Replace(oneShot)
}
// If the suffix is too long, replace it with a md5 hash and write a
// file that contains the original suffix.
if len(katiSuffix) > 64 {
shortSuffix := "-" + fmt.Sprintf("%x", md5.Sum([]byte(katiSuffix)))
config.SetKatiSuffix(shortSuffix)
ctx.Verbosef("Kati ninja suffix too long: %q", katiSuffix)
ctx.Verbosef("Replacing with: %q", shortSuffix)
if err := ioutil.WriteFile(strings.TrimSuffix(config.KatiNinjaFile(), "ninja")+"suf", []byte(katiSuffix), 0777); err != nil {
ctx.Println("Error writing suffix file:", err)
}
} else {
config.SetKatiSuffix(katiSuffix)
}
}
func runKati(ctx Context, config Config) {
ctx.BeginTrace("kati")
defer ctx.EndTrace()
genKatiSuffix(ctx, config)
executable := config.PrebuiltBuildTool("ckati")
args := []string{
"--ninja",
"--ninja_dir=" + config.OutDir(),
"--ninja_suffix=" + config.KatiSuffix(),
"--regen",
"--ignore_optional_include=" + filepath.Join(config.OutDir(), "%.P"),
"--detect_android_echo",
"--color_warnings",
"--gen_all_targets",
"-f", "build/core/main.mk",
}
if !config.Environment().IsFalse("KATI_EMULATE_FIND") {
args = append(args, "--use_find_emulator")
}
args = append(args, config.KatiArgs()...)
args = append(args,
"BUILDING_WITH_NINJA=true",
"SOONG_ANDROID_MK="+config.SoongAndroidMk(),
"SOONG_MAKEVARS_MK="+config.SoongMakeVarsMk())
if config.UseGoma() {
args = append(args, "-j"+strconv.Itoa(config.Parallel()))
}
cmd := Command(ctx, config, "ckati", executable, args...)
cmd.Sandbox = katiSandbox
pipe, err := cmd.StdoutPipe()
if err != nil {
ctx.Fatalln("Error getting output pipe for ckati:", err)
}
cmd.Stderr = cmd.Stdout
// Kati leaks memory, so ensure leak detection is turned off
cmd.Environment.Set("ASAN_OPTIONS", "detect_leaks=0")
cmd.StartOrFatal()
katiRewriteOutput(ctx, pipe)
cmd.WaitOrFatal()
}
var katiIncludeRe = regexp.MustCompile(`^(\[\d+/\d+] )?including [^ ]+ ...$`)
func katiRewriteOutput(ctx Context, pipe io.ReadCloser) {
haveBlankLine := true
smartTerminal := ctx.IsTerminal()
scanner := bufio.NewScanner(pipe)
for scanner.Scan() {
line := scanner.Text()
verbose := katiIncludeRe.MatchString(line)
// For verbose lines, write them on the current line without a newline,
// then overwrite them if the next thing we're printing is another
// verbose line.
if smartTerminal && verbose {
// Limit line width to the terminal width, otherwise we'll wrap onto
// another line and we won't delete the previous line.
//
// Run this on every line in case the window has been resized while
// we're printing. This could be optimized to only re-run when we
// get SIGWINCH if it ever becomes too time consuming.
if max, ok := termWidth(ctx.Stdout()); ok {
if len(line) > max {
// Just do a max. Ninja elides the middle, but that's
// more complicated and these lines aren't that important.
line = line[:max]
}
}
// Move to the beginning on the line, print the output, then clear
// the rest of the line.
fmt.Fprint(ctx.Stdout(), "\r", line, "\x1b[K")
haveBlankLine = false
continue
} else if smartTerminal && !haveBlankLine {
// If we've previously written a verbose message, send a newline to save
// that message instead of overwriting it.
fmt.Fprintln(ctx.Stdout())
haveBlankLine = true
} else if !smartTerminal {
// Most editors display these as garbage, so strip them out.
line = string(stripAnsiEscapes([]byte(line)))
}
// Assume that non-verbose lines are important enough for stderr
fmt.Fprintln(ctx.Stderr(), line)
}
// Save our last verbose line.
if !haveBlankLine {
fmt.Fprintln(ctx.Stdout())
}
}
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