101 lines
2.3 KiB
Go
101 lines
2.3 KiB
Go
package main
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import (
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"bufio"
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"fmt"
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"io/fs"
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"log"
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"os"
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"path/filepath"
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"regexp"
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)
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const CHANNEL_BUFFERING = 10
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type FileMatchData struct {
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Path string
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LineIndexes []int
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Lines []string
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}
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func ProcessSingleFile(re_pattern regexp.Regexp, path string, out chan FileMatchData) error {
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file, err := os.Open(path)
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if err != nil {
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log.Fatal(err)
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}
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defer file.Close()
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res := FileMatchData{Path: path, LineIndexes: make([]int, 0), Lines: make([]string, 0)}
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scanner := bufio.NewScanner(file)
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// optionally, resize scanner's capacity for lines over 64K, see next example
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cur_line_ind := 1
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for scanner.Scan() {
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line_text := scanner.Text()
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if re_pattern.FindString(line_text) != "" {
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res.LineIndexes = append(res.LineIndexes, cur_line_ind)
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res.Lines = append(res.Lines, line_text)
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}
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cur_line_ind++
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}
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if err := scanner.Err(); err != nil {
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log.Fatal(err)
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}
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out <- res
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return nil
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}
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func main() {
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path_pattern := "git/hook"
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re_path_pattern, err := regexp.Compile(path_pattern)
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if err != nil {
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fmt.Printf("Unable to compile path pattern Regexp: %v\n", path_pattern)
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return
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}
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text_pattern := "the commit"
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re_text_pattern, err := regexp.Compile(text_pattern)
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if err != nil {
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fmt.Printf("Unable to compile text pattern Regexp: %v\n", text_pattern)
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return
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}
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processed_channel := make(chan FileMatchData, CHANNEL_BUFFERING)
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total_files := 0
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err = filepath.Walk(".", func(path string, info fs.FileInfo, err error) error {
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if err != nil {
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fmt.Printf("prevent panic by handling failure accessing a path %q: %v\n", path, err)
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return err
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}
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if re_path_pattern.FindString(path) == "" {
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return nil
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}
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// if info.IsDir() && info.Name() == subDirToSkip {
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// fmt.Printf("skipping a dir without errors: %+v \n", info.Name())
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// return filepath.SkipDir
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// }
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if info.IsDir() {
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return nil
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}
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go ProcessSingleFile(*re_text_pattern, path, processed_channel)
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total_files++
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return nil
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})
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for ; total_files > 0; total_files-- {
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cur_processed := <-processed_channel
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if len(cur_processed.Lines) == 0 {
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continue
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}
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fmt.Printf("%s:\n", cur_processed.Path)
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for i := 0; i < len(cur_processed.Lines); i++ {
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fmt.Printf("%d:%s\n", cur_processed.LineIndexes[i], cur_processed.Lines[i])
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}
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fmt.Print("\n")
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}
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if err != nil {
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fmt.Printf("error walking the path %q: %v\n", path_pattern, err)
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return
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}
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}
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