Attempt to fix windows command parsing + add more tests

middleware/commands.go

@@ -2,6 +2,7 @@ package middleware
 
 import (
 	"errors"
+	"fmt"
 	"runtime"
 	"strings"
 	"unicode"
@@ -46,7 +47,7 @@ func SplitCommandAndArgs(command string) (cmd string, args []string, err error)
 //
 // Loosely based off the rules here: http://stackoverflow.com/a/4094897/1048862
 // True parsing is much, much trickier.
-func parseWindowsCommand(cmd string) []string {
+func parseWindowsCommand2(cmd string) []string {
 	var parts []string
 	var part string
 	var quoted bool
@@ -97,3 +98,60 @@ func parseWindowsCommand(cmd string) []string {
 
 	return parts
 }
+
+func parseWindowsCommand(cmd string) []string {
+	var parts []string
+	var part string
+	var inQuotes bool
+	var wasBackslash bool
+
+	prefix := "DEBUG:"
+
+	fmt.Println(prefix, "Parsing cmd:", cmd)
+
+	for i, ch := range cmd {
+		fmt.Println("  ", prefix, "Looking at char:", string(ch), "at index", string(i))
+
+		if ch == '\\' {
+			wasBackslash = true
+			// put it in the part - for now we don't know if it's escaping char or path separator
+			part += string(ch)
+			continue
+		}
+
+		if ch == '"' {
+			if wasBackslash {
+				// remove the backslash from the part and add the escaped quote instead
+				part = part[:len(part)-1]
+				part += string(ch)
+				wasBackslash = false
+				continue
+			} else {
+				// normal escaping quotes
+				fmt.Println("    ", prefix, "and it's a quote")
+				inQuotes = !inQuotes
+				continue
+
+			}
+		}
+
+		if unicode.IsSpace(ch) && !inQuotes && len(part) > 0 {
+			fmt.Println("    ", prefix, "and it's a space outside quotes")
+			parts = append(parts, part)
+			part = ""
+			wasBackslash = false
+			continue
+		}
+
+		wasBackslash = false
+		part += string(ch)
+	}
+
+	if len(part) > 0 {
+		parts = append(parts, part)
+		part = ""
+	}
+
+	fmt.Println(prefix, strings.Join(parts, ","))
+	return parts
+}