Created
June 29, 2015 01:07
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Replace All Text Recursively in Files and File Names
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// Source: https://gist.github.com/tdegrunt/045f6b3377f3f7ffa408 | |
// Example: replaceall.exe -find="cordove" -replace="gowebapp" -extension="*.go" -filename=true -write=false | |
package main | |
import ( | |
"flag" | |
"fmt" | |
"io/ioutil" | |
"os" | |
"path/filepath" | |
"strconv" | |
"strings" | |
) | |
func visit(path string, fi os.FileInfo, err error) error { | |
if err != nil { | |
return err | |
} | |
if fi.IsDir() { | |
return nil | |
} | |
matched, err := filepath.Match(*flagExt, fi.Name()) | |
if err != nil { | |
panic(err) | |
return err | |
} | |
// If the file extension matches | |
if matched { | |
// Read the entire file into memory | |
read, err := ioutil.ReadFile(path) | |
if err != nil { | |
fmt.Println("**ERROR: Could not read from", path) | |
return nil | |
} | |
// Convert the bytes array into a string | |
oldContents := string(read) | |
// If the file name contains the search term, replace the file name | |
if *flagName && strings.Contains(fi.Name(), *flagFind) { | |
oldpath := path | |
path = strings.Replace(path, *flagFind, *flagReplace, -1) | |
fmt.Println(" Rename:", oldpath, "("+path+")") | |
if *flagCommit { | |
errRename := os.Rename(oldpath, path) | |
if errRename != nil { | |
fmt.Println("**ERROR: Could not rename", oldpath, "to", path) | |
return nil | |
} | |
} | |
} | |
// If the file contains the search term | |
if strings.Contains(oldContents, *flagFind) { | |
// Replace the search term | |
newContents := strings.Replace(oldContents, *flagFind, *flagReplace, -1) | |
count := strconv.Itoa(strings.Count(oldContents, *flagFind)) | |
fmt.Println("Replace:", path, "("+count+")") | |
// Write the data back to the file | |
if *flagCommit { | |
err = ioutil.WriteFile(path, []byte(newContents), 0) | |
if err != nil { | |
fmt.Println("**ERROR: Could not write to", path) | |
return nil | |
} | |
} | |
} | |
} | |
return nil | |
} | |
var ( | |
flagFind *string | |
flagReplace *string | |
flagExt *string | |
flagName *bool | |
flagCommit *bool | |
) | |
func init() { | |
flag.Usage = func() { | |
fmt.Fprintf(os.Stderr, "Usage: %s -find=\"blue\" -replace=\"red\" \n*Does not rename folders\n\nPossible flags:\n", os.Args[0]) | |
flag.PrintDefaults() | |
} | |
} | |
func main() { | |
flagFind = flag.String("find", "", "search for text") | |
flagReplace = flag.String("replace", "", "replace with text") | |
flagExt = flag.String("extension", "*.txt", "file extension") | |
flagName = flag.Bool("filename", false, "include file path when replacing") | |
flagCommit = flag.Bool("write", false, "write the changes (only show changes by defaults)") | |
flag.Parse() | |
if *flagExt != "" && (*flagFind != "" || *flagReplace != "") { | |
fmt.Println() | |
if *flagCommit { | |
fmt.Println("Results") | |
fmt.Println("-------") | |
} else { | |
fmt.Println("Results (no changes)") | |
fmt.Println("--------------------") | |
} | |
err := filepath.Walk(".", visit) | |
if err != nil { | |
panic(err) | |
} | |
} else { | |
fmt.Println("Flags are missing. No changes made.") | |
} | |
} |
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