X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=cmd%2Fmicro%2Futil.go;h=eb8a1977607df70a0291d012345c82480dc2ce38;hb=71af765b4e4f368c4bbbcb3947f3497e17271b62;hp=bbcc4f5542b98e729aa27d7734a4a80115eecf66;hpb=43eb238b08ed4028ddb9aefba4a5dc8b3b384b0b;p=micro.git

diff --git a/cmd/micro/util.go b/cmd/micro/util.go
index bbcc4f55..eb8a1977 100644
--- a/cmd/micro/util.go
+++ b/cmd/micro/util.go
@@ -1,8 +1,8 @@
 package main
 
 import (
-	"bytes"
 	"os"
+	"os/user"
 	"path/filepath"
 	"reflect"
 	"runtime"
@@ -23,6 +23,54 @@ func Count(s string) int {
 	return utf8.RuneCountInString(s)
 }
 
+// Convert byte array to rune array
+func toRunes(b []byte) []rune {
+	runes := make([]rune, 0, utf8.RuneCount(b))
+
+	for len(b) > 0 {
+		r, size := utf8.DecodeRune(b)
+		runes = append(runes, r)
+
+		b = b[size:]
+	}
+
+	return runes
+}
+
+func sliceStart(slc []byte, index int) []byte {
+	len := len(slc)
+	i := 0
+	totalSize := 0
+	for totalSize < len {
+		if i >= index {
+			return slc[totalSize:]
+		}
+
+		_, size := utf8.DecodeRune(slc[totalSize:])
+		totalSize += size
+		i++
+	}
+
+	return slc[totalSize:]
+}
+
+func sliceEnd(slc []byte, index int) []byte {
+	len := len(slc)
+	i := 0
+	totalSize := 0
+	for totalSize < len {
+		if i >= index {
+			return slc[:totalSize]
+		}
+
+		_, size := utf8.DecodeRune(slc[totalSize:])
+		totalSize += size
+		i++
+	}
+
+	return slc[:totalSize]
+}
+
 // NumOccurrences counts the number of occurrences of a byte in a string
 func NumOccurrences(s string, c byte) int {
 	var n int
@@ -55,6 +103,7 @@ func Max(a, b int) int {
 	return b
 }
 
+// FSize gets the size of a file
 func FSize(f *os.File) int64 {
 	fi, _ := f.Stat()
 	// get the size
@@ -129,7 +178,7 @@ func GetLeadingWhitespace(str string) string {
 }
 
 // IsSpaces checks if a given string is only spaces
-func IsSpaces(str string) bool {
+func IsSpaces(str []byte) bool {
 	for _, c := range str {
 		if c != ' ' {
 			return false
@@ -245,6 +294,7 @@ func lcs(a, b string) string {
 	return lcs
 }
 
+// CommonSubstring gets a common substring among the inputs
 func CommonSubstring(arr ...string) string {
 	commonStr := arr[0]
 
@@ -273,93 +323,44 @@ func ShortFuncName(i interface{}) string {
 	return strings.TrimPrefix(runtime.FuncForPC(reflect.ValueOf(i).Pointer()).Name(), "main.(*View).")
 }
 
-// SplitCommandArgs separates multiple command arguments which may be quoted.
-// The returned slice contains at least one string
-func SplitCommandArgs(input string) []string {
-	var result []string
-	var curQuote *bytes.Buffer
-
-	curArg := new(bytes.Buffer)
-	escape := false
-
-	finishQuote := func() {
-		if curQuote == nil {
-			return
-		}
-		str := curQuote.String()
-		if unquoted, err := strconv.Unquote(str); err == nil {
-			str = unquoted
-		}
-		curArg.WriteString(str)
-		curQuote = nil
-	}
-
-	appendResult := func() {
-		finishQuote()
-		escape = false
-
-		str := curArg.String()
-		result = append(result, str)
-		curArg.Reset()
+// ReplaceHome takes a path as input and replaces ~ at the start of the path with the user's
+// home directory. Does nothing if the path does not start with '~'.
+func ReplaceHome(path string) string {
+	if !strings.HasPrefix(path, "~") {
+		return path
 	}
 
-	for _, r := range input {
-		if r == ' ' && curQuote == nil {
-			appendResult()
-		} else {
-			runeHandled := false
-			appendRuneToBuff := func() {
-				if curQuote != nil {
-					curQuote.WriteRune(r)
-				} else {
-					curArg.WriteRune(r)
-				}
-				runeHandled = true
-			}
+	var userData *user.User
+	var err error
 
-			if r == '"' && curQuote == nil {
-				curQuote = new(bytes.Buffer)
-				appendRuneToBuff()
+	homeString := strings.Split(path, "/")[0]
+	if homeString == "~" {
+		userData, err = user.Current()
+		if err != nil {
+			messenger.Error("Could not find user: ", err)
+		}
+	} else {
+		userData, err = user.Lookup(homeString[1:])
+		if err != nil {
+			if messenger != nil {
+				messenger.Error("Could not find user: ", err)
 			} else {
-				if curQuote != nil && !escape {
-					if r == '"' {
-						appendRuneToBuff()
-						finishQuote()
-					} else if r == '\\' {
-						appendRuneToBuff()
-						escape = true
-						continue
-					}
-				}
-			}
-			if !runeHandled {
-				appendRuneToBuff()
+				TermMessage("Could not find user: ", err)
 			}
+			return ""
 		}
-
-		escape = false
 	}
-	appendResult()
-	return result
+
+	home := userData.HomeDir
+
+	return strings.Replace(path, homeString, home, 1)
 }
 
-// JoinCommandArgs joins multiple command arguments and quote the strings if needed.
-func JoinCommandArgs(args ...string) string {
-	buf := new(bytes.Buffer)
-	first := true
-	for _, arg := range args {
-		if first {
-			first = false
-		} else {
-			buf.WriteRune(' ')
-		}
-		quoted := strconv.Quote(arg)
-		if quoted[1:len(quoted)-1] != arg || strings.ContainsRune(arg, ' ') {
-			buf.WriteString(quoted)
-		} else {
-			buf.WriteString(arg)
-		}
+// GetPath returns a filename without everything following a `:`
+// This is used for opening files like util.go:10:5 to specify a line and column
+func GetPath(path string) string {
+	if strings.Contains(path, ":") {
+		path = strings.Split(path, ":")[0]
 	}
-
-	return buf.String()
+	return path
 }