gocryptfs-xray: add -0 flag, add tests

The -0 flags works like xargs -0.

1 files changed, 31 insertions, 12 deletions

diff --git a/gocryptfs-xray/paths_ctlsock.go b/gocryptfs-xray/paths_ctlsock.go
index 3c69ec3..c489f0e 100644
--- a/gocryptfs-xray/paths_ctlsock.go
+++ b/gocryptfs-xray/paths_ctlsock.go
@@ -8,36 +8,55 @@ import (
 	"github.com/rfjakob/gocryptfs/ctlsock"
 )
 
-func decryptPaths(socketPath string) {
+func decryptPaths(socketPath string, sep0 bool) {
 	var req ctlsock.RequestStruct
-	transformPaths(socketPath, &req, &req.DecryptPath)
+	transformPaths(socketPath, &req, &req.DecryptPath, sep0)
 }
 
-func encryptPaths(socketPath string) {
+func encryptPaths(socketPath string, sep0 bool) {
 	var req ctlsock.RequestStruct
-	transformPaths(socketPath, &req, &req.EncryptPath)
+	transformPaths(socketPath, &req, &req.EncryptPath, sep0)
 }
 
-func transformPaths(socketPath string, req *ctlsock.RequestStruct, in *string) {
+func transformPaths(socketPath string, req *ctlsock.RequestStruct, in *string, sep0 bool) {
+	errorCount := 0
 	c, err := ctlsock.New(socketPath)
 	if err != nil {
 		fmt.Printf("fatal: %v\n", err)
 		os.Exit(1)
 	}
-	line := 0
-	scanner := bufio.NewScanner(os.Stdin)
-	for scanner.Scan() {
-		line++
-		*in = scanner.Text()
+	line := 1
+	var separator byte = '\n'
+	if sep0 {
+		separator = '\000'
+	}
+	r := bufio.NewReader(os.Stdin)
+	for eof := false; eof == false; line++ {
+		val, err := r.ReadBytes(separator)
+		if len(val) == 0 {
+			break
+		}
+		if err != nil {
+			// break the loop after we have processed the last val
+			eof = true
+		} else {
+			// drop trailing separator
+			val = val[:len(val)-1]
+		}
+		*in = string(val)
 		resp, err := c.Query(req)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "error at input line %d %q: %v\n", line, *in, err)
+			errorCount++
 			continue
 		}
 		if resp.WarnText != "" {
 			fmt.Fprintf(os.Stderr, "warning at input line %d %q: %v\n", line, *in, resp.WarnText)
 		}
-		fmt.Println(resp.Result)
+		fmt.Printf("%s%c", resp.Result, separator)
+	}
+	if errorCount == 0 {
+		os.Exit(0)
 	}
-	os.Exit(0)
+	os.Exit(1)
 }