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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 main
import (
"errors"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"runtime/pprof"
"sort"
"strings"
"time"
"android/soong/finder"
"android/soong/finder/fs"
)
var (
// configuration of what to find
excludeDirs string
filenamesToFind string
pruneFiles string
// other configuration
cpuprofile string
verbose bool
dbPath string
numIterations int
)
func init() {
flag.StringVar(&cpuprofile, "cpuprofile", "",
"filepath of profile file to write (optional)")
flag.BoolVar(&verbose, "v", false, "log additional information")
flag.StringVar(&dbPath, "db", "", "filepath of cache db")
flag.StringVar(&excludeDirs, "exclude-dirs", "",
"comma-separated list of directory names to exclude from search")
flag.StringVar(&filenamesToFind, "names", "",
"comma-separated list of filenames to find")
flag.StringVar(&pruneFiles, "prune-files", "",
"filenames that if discovered will exclude their entire directory "+
"(including sibling files and directories)")
flag.IntVar(&numIterations, "count", 1,
"number of times to run. This is intended for use with --cpuprofile"+
" , to increase profile accuracy")
}
var usage = func() {
fmt.Printf("usage: finder -name <fileName> --db <dbPath> <searchDirectory> [<searchDirectory>...]\n")
flag.PrintDefaults()
}
func main() {
err := run()
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err.Error())
os.Exit(1)
}
}
func stringToList(input string) []string {
return strings.Split(input, ",")
}
func run() error {
startTime := time.Now()
flag.Parse()
if cpuprofile != "" {
f, err := os.Create(cpuprofile)
if err != nil {
return fmt.Errorf("Error opening cpuprofile: %s", err)
}
pprof.StartCPUProfile(f)
defer f.Close()
defer pprof.StopCPUProfile()
}
var writer io.Writer
if verbose {
writer = os.Stderr
} else {
writer = ioutil.Discard
}
// TODO: replace Lshortfile with Llongfile when bug 63821638 is done
logger := log.New(writer, "", log.Ldate|log.Lmicroseconds|log.Lshortfile)
logger.Printf("Finder starting at %v\n", startTime)
rootPaths := flag.Args()
if len(rootPaths) < 1 {
usage()
return fmt.Errorf(
"Must give at least one <searchDirectory>")
}
workingDir, err := os.Getwd()
if err != nil {
return err
}
params := finder.CacheParams{
WorkingDirectory: workingDir,
RootDirs: rootPaths,
ExcludeDirs: stringToList(excludeDirs),
PruneFiles: stringToList(pruneFiles),
IncludeFiles: stringToList(filenamesToFind),
}
if dbPath == "" {
usage()
return errors.New("Param 'db' must be nonempty")
}
matches := []string{}
for i := 0; i < numIterations; i++ {
matches, err = runFind(params, logger)
if err != nil {
return err
}
}
findDuration := time.Since(startTime)
logger.Printf("Found these %v inodes in %v :\n", len(matches), findDuration)
sort.Strings(matches)
for _, match := range matches {
fmt.Println(match)
}
logger.Printf("End of %v inodes\n", len(matches))
logger.Printf("Finder completed in %v\n", time.Since(startTime))
return nil
}
func runFind(params finder.CacheParams, logger *log.Logger) (paths []string, err error) {
service, err := finder.New(params, fs.OsFs, logger, dbPath)
if err != nil {
return []string{}, err
}
defer service.Shutdown()
return service.FindAll(), nil
}
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