release: 0.2

- fix inplace arg
- follow symlinks by default
- reverse flag
- quiet flag
- try chown/chmod on unix

Makefile

@@ -1,5 +1,5 @@
 NAME=multini
-VERSION=0.1
+VERSION=0.2
 GOCMD=go
 LDFLAGS:="$(LDFLAGS) -X 'main.Version=$(VERSION)'"
 GOBUILD=$(GOCMD) build -ldflags=$(LDFLAGS)

actions.go

@@ -22,7 +22,7 @@ func chk() int {
 
 func add(ini *types.Ini) error {
 	if ArgKeyIsSet {
-		return ini.AddKey(ArgSection, ArgKey, ArgValue)
+		return ini.AddKey(ArgSection, ArgKey, ArgValue, ArgReverse)
 	} else {
 		ini.AddSection(ArgSection)
 		return nil

args.go

@@ -23,6 +23,8 @@ var (
 	ArgUnix     bool
 	ArgHelp     bool
 	ArgExisting bool
+	ArgReverse  bool
+	ArgQuiet    bool
 	ArgOutput   string
 
 	ArgFile         string
@@ -40,14 +42,15 @@ func printHelp() {
 	output.Println("")
 	output.Println("Usage: multini [OPTION]... [ACTION] config_file [section] [param] [value]")
 	output.Println("Actions:")
-	output.Println("  -g, --get          get values for a given combination of parameters.")
+	output.Println("  -g, --get          Get values for a given combination of parameters.")
-	output.Println("  -s, --set          set values for a given combination of parameters.")
+	output.Println("  -s, --set          Set values for a given combination of parameters.")
-	output.Println("  -a, --add          add values for a given combination of parameters.")
+	output.Println("  -a, --add          Add values for a given combination of parameters.")
-	output.Println("  -d, --del          delete the given combination of parameters.")
+	output.Println("  -d, --del          Delete the given combination of parameters.")
-	output.Println("  -c, --chk          display parsing errors for the specified file.")
+	output.Println("  -c, --chk          Display parsing errors for the specified file.")
 	output.Println("")
 	output.Println("Options:")
 	output.Println("  -e, --existing     For --set and --del, fail if item is missing.")
+	output.Println("  -r, --reverse      For --add, adds an item to the top of the section")
 	output.Println("  -i, --inplace      Lock and write files in place.")
 	output.Println("                     This is not atomic but has less restrictions")
 	output.Println("                     than the default replacement method.")
@@ -55,6 +58,7 @@ func printHelp() {
 	//	output.Println("  -v, --verbose      Indicate on stderr if changes were made")
 	output.Println("  -u, --unix         Use LF as end of line")
 	output.Println("  -w, --windows      Use CRLF as end of line")
+	output.Println("  -q, --quiet        Suppress all normal output")
 	output.Println("  -h, --help         Write this help to stdout")
 	output.Println("      --version      Write version to stdout")
 }
@@ -74,14 +78,18 @@ func init() {
 	gnuflag.BoolVar(&ArgDel, "d", false, "")
 	gnuflag.BoolVar(&ArgChk, "chk", false, "")
 	gnuflag.BoolVar(&ArgChk, "c", false, "")
-	gnuflag.BoolVar(&ArgDel, "inplace", false, "")
+	gnuflag.BoolVar(&ArgInplace, "inplace", false, "")
-	gnuflag.BoolVar(&ArgDel, "i", false, "")
+	gnuflag.BoolVar(&ArgInplace, "i", false, "")
 	gnuflag.BoolVar(&ArgUnix, "unix", false, "")
 	gnuflag.BoolVar(&ArgUnix, "u", false, "")
 	gnuflag.BoolVar(&ArgWindows, "windows", false, "")
 	gnuflag.BoolVar(&ArgWindows, "w", false, "")
+	gnuflag.BoolVar(&ArgReverse, "reverse", false, "")
+	gnuflag.BoolVar(&ArgReverse, "r", false, "")
 	gnuflag.BoolVar(&ArgExisting, "existing", false, "")
 	gnuflag.BoolVar(&ArgExisting, "e", false, "")
+	gnuflag.BoolVar(&ArgQuiet, "quiet", false, "")
+	gnuflag.BoolVar(&ArgQuiet, "q", false, "")
 	gnuflag.BoolVar(&ArgVerbose, "verbose", false, "")
 	gnuflag.BoolVar(&ArgVerbose, "v", false, "")
 	gnuflag.StringVar(&ArgOutput, "output", "", "")
@@ -117,6 +125,7 @@ func parseArgs() error {
 	// Output settings
 	output.SetEndOfLineNative()
 	output.SetVerbose(ArgVerbose)
+	output.SetQuiet(ArgQuiet)
 
 	// Positional Args
 	for i := 0; i < 4 && i < gnuflag.NArg(); i++ {

main.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"fmt"
 	"os"
 
 	"multini/output"
@@ -37,7 +36,7 @@ func main() {
 
 	ini, err = iniRead(ArgFile)
 	if err != nil {
-		fmt.Println(err)
+		output.Errorln(err)
 		os.Exit(EXIT_FILE_READ_ERR)
 	}
 

output/output.go

@@ -16,6 +16,14 @@ var (
 	verbose   *log.Logger = devNull
 )
 
+func SetQuiet(enabled bool) {
+	if enabled {
+		stdout = devNull
+		stderr = devNull
+		verbose = devNull
+	}
+}
+
 func SetVerbose(enabled bool) {
 	if enabled {
 		verbose = stderr

stat_unix.go

@@ -0,0 +1,17 @@
+// +build !windows
+
+package main
+
+import (
+	"os"
+	"syscall"
+)
+
+func GetUidGid(info os.FileInfo) (int, int) {
+	stat, ok := info.Sys().(*syscall.Stat_t)
+	if ok {
+		return int(stat.Uid), int(stat.Gid)
+	} else {
+		return -1, -1
+	}
+}

stat_windows.go

@@ -0,0 +1,11 @@
+// +build windows
+
+package main
+
+import (
+	"os"
+)
+
+func GetUidGid(info os.FileInfo) (int, int) {
+	return -1, -1
+}

types/ini.go

@@ -102,7 +102,7 @@ func (obj *Ini) SetSection(section string) *Section {
 	return obj.AddSection(section)
 }
 
-func (obj *Ini) AddKey(section, key, value string) error {
+func (obj *Ini) AddKey(section, key, value string, reverse bool) error {
 	sect, err := obj.FindSection(section)
 	if err != nil {
 		if createIfNotExist() {
@@ -111,7 +111,7 @@ func (obj *Ini) AddKey(section, key, value string) error {
 			return err
 		}
 	}
-	sect.AddKey(key, value)
+	sect.AddKey(key, value, reverse)
 	return nil
 }
 

types/section.go

@@ -111,11 +111,25 @@ func (obj *Section) GetKeyVal(name, value string) error {
 	return errors.New("Parameter:Value not found: " + name + ":" + value)
 }
 
-func (obj *Section) appendKey(name, value string) {
+func (obj *Section) appendKey(name, value string, reverse bool) {
 	var newKeyValue KeyValue
 	var replaceIndex int = -1
 	newKeyValue.Key = name
 	newKeyValue.Value = value
+	if reverse {
+		// for right indent and tabs
+		for i := 0; i < len(obj.Lines); i++ {
+			if obj.Lines[i].Type() == TKeyValue {
+				template := obj.Lines[i].(*KeyValue)
+				newKeyValue.PrefixKey = template.PrefixKey
+				newKeyValue.PostfixKey = template.PostfixKey
+				newKeyValue.PrefixValue = template.PrefixValue
+				newKeyValue.PostfixValue = template.PostfixValue
+				break
+			}
+		}
+		obj.Lines = append([]Element{&newKeyValue}, obj.Lines...)
+	} else {
 		// replace first emptyline
 		for i := len(obj.Lines) - 1; i >= 0; i-- {
 			if obj.Lines[i].Type() == TEmptyLine {
@@ -142,8 +156,9 @@ func (obj *Section) appendKey(name, value string) {
 			obj.Lines[replaceIndex] = &newKeyValue
 		}
 	}
+}
 
-func (obj *Section) AddKey(name, value string) {
+func (obj *Section) AddKey(name, value string, reverse bool) {
 	gotIt := false
 	for i, keyVal := range obj.Lines {
 		if keyVal.Type() == TKeyValue &&
@@ -157,7 +172,7 @@ func (obj *Section) AddKey(name, value string) {
 		}
 	}
 	if !gotIt {
-		obj.appendKey(name, value)
+		obj.appendKey(name, value, reverse)
 	}
 }
 
@@ -176,7 +191,7 @@ func (obj *Section) SetKey(name, value string) error {
 	}
 	if !gotIt {
 		if createIfNotExist() {
-			obj.appendKey(name, value)
+			obj.appendKey(name, value, false)
 		} else {
 			return errors.New("Parameter not found: " + name)
 		}

writer.go

@@ -4,15 +4,44 @@ import (
 	"bufio"
 	"io/ioutil"
 	"os"
+	"path/filepath"
 
 	"multini/types"
 )
 
 func replaceOriginal(oldFile, newFile string) error {
-	err := os.Remove(oldFile)
+	realOldFile, err := filepath.EvalSymlinks(oldFile)
-	if err == nil {
+	if err != nil {
-		err = os.Rename(newFile, oldFile)
+		return err
 	}
+
+	infoOldFile, err := os.Stat(realOldFile)
+	if err != nil {
+		return err
+	}
+	mode := infoOldFile.Mode()
+
+	var uid, gid int = GetUidGid(infoOldFile)
+
+	err = os.Remove(realOldFile)
+	if err != nil {
+		return err
+	}
+
+	err = os.Rename(newFile, realOldFile)
+	if err != nil {
+		return err
+	}
+
+	err = os.Chmod(realOldFile, mode)
+	if err != nil {
+		return err
+	}
+
+	// try to restore original uid/gid
+	// don't worry if we can't
+	os.Chown(realOldFile, uid, gid)
+
 	return err
 }
 
@@ -33,7 +62,20 @@ func iniWrite(filename string, ini *types.Ini) error {
 }
 
 func iniWriteInplace(filename string, ini *types.Ini) error {
-	targetFile, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE, 0644)
+	realfilename, err := filepath.EvalSymlinks(filename)
+	mode := os.FileMode(int(0644))
+	if os.IsNotExist(err) {
+		realfilename = filename
+	} else if err != nil {
+		return err
+	} else {
+		info, err := os.Stat(realfilename)
+		if err != nil {
+			return err
+		}
+		mode = info.Mode()
+	}
+	targetFile, err := os.OpenFile(realfilename, os.O_WRONLY|os.O_CREATE, mode)
 	if err == nil {
 		datawriter := bufio.NewWriter(targetFile)
 		_, err = datawriter.WriteString(ini.Full())