From: Colin P. Mccabe <colin@cmccabe.xyz>
Date: Thu, 22 Jul 2021 23:28:21 +0000 (-0700)
Subject: Add recursive_decompress.go
X-Git-Url: http://club.cc.cmu.edu/~cmccabe/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cb7cd6e03095ac7acbfeb2c74a587c4f053ef6bc;p=cmccabe-bin

Add recursive_decompress.go
---

diff --git a/.gitignore b/.gitignore
index b17d6aa..b6a0926 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,6 +17,7 @@ msgpack-translate
 directory_merge
 pickrand
 random_word
+recursive_decompress
 audiobooker
 
 #
diff --git a/recursive_decompress.go b/recursive_decompress.go
new file mode 100644
index 0000000..a642fa7
--- /dev/null
+++ b/recursive_decompress.go
@@ -0,0 +1,91 @@
+package main
+
+import (
+	"flag"
+	"os/exec"
+	"path/filepath"
+	"fmt"
+	"os"
+	"strings"
+)
+
+var removeArchives *bool
+
+func processPath(curPath string) error {
+	info, err := os.Stat(curPath)
+	if err != nil {
+		return fmt.Errorf("Unable to stat %s: %s", curPath, err.Error())
+	}
+	if info.IsDir() {
+		entries, err := os.ReadDir(curPath)
+		if err != nil {
+			return fmt.Errorf("Unable to call readdir on %s: %s", curPath, err.Error())
+		}
+		for i := range(entries) {
+			err := processPath(filepath.Join(curPath, entries[i].Name()))
+			if err != nil {
+				return err
+			}
+		}
+	} else {
+		tarBaseName := tarBaseName(curPath)
+		if tarBaseName != "" {
+			err = applyTarOn(curPath)
+			if err != nil {
+				return err
+			}
+			err = processPath(filepath.Join(filepath.Dir(curPath), tarBaseName))
+			if err != nil {
+				return err
+			}
+			if *removeArchives {
+				err = os.Remove(curPath)
+				if err != nil {
+					return fmt.Errorf("Unable to remove archive file %s: %s", curPath, err.Error())
+				}
+				fmt.Printf("== rm %s\n", curPath)
+			}
+		}
+	}
+	return nil
+}
+
+func tarBaseName(curPath string) string {
+	if strings.HasSuffix(curPath, ".tgz") {
+		return filepath.Base(curPath[:len(curPath)-4])
+	}
+	return ""
+}
+
+func applyTarOn(curPath string) error {
+	fmt.Printf("== decompressing tar file %s\n", curPath)
+	cmd := exec.Command("tar", "xvf", filepath.Base(curPath))
+	cmd.Dir = filepath.Dir(curPath)
+	//cmd.Stdout = os.Stdout
+	err := cmd.Run()
+	if err != nil {
+		return fmt.Errorf("error running tar xvf on %s: %s", curPath, err.Error())
+	}
+	return nil
+}
+
+func main() {
+	removeArchives = flag.Bool("r", false, "Remove archive files after decompressing them")
+	flag.Usage = func() {
+		fmt.Printf("recursive_decompress: recursively decompresses a path.\n")
+		fmt.Printf("usage: recursive_decompress [flags] [paths...]\n")
+		fmt.Printf("\n")
+		flag.PrintDefaults()
+	}
+	flag.Parse()
+	curPath := "."
+	if flag.Arg(0) != "" {
+		curPath = flag.Arg(0)
+	}
+	err := processPath(curPath)
+	if err != nil {
+		fmt.Printf("error: %s\n", err.Error())
+		os.Exit(1)
+	}
+	os.Exit(0)
+}