bash_include: 加入 PATH 互動式編輯器bash_include-20111214

1 files changed, 105 insertions, 0 deletions

diff --git a/bash_include b/bash_include
index 8dadcaa..7e9aaad 100644
--- a/bash_include
+++ b/bash_include
@@ -413,6 +413,10 @@ function help_function ()
     trash_rm [all | numbers ...] [-- prefix ...]
     trash_count
     trash_du [-- prefix ...]
+ <<< Group PATH Editor >>>
+    path_editor
+    split_path
+    update_path	
  <<< Other >>>
     split_arguments [arguments ...]
     compile_all [-n] filename ...
@@ -529,6 +533,107 @@ function check_important_files ()
 	done
 }
 
+########## PATH Editor ##########
+
+function split_path () 
+{
+	local fifoname="$HOME/`uuidgen`"
+	mkfifo "$fifoname"
+	local -i i=0
+	local oneline
+	export patharr
+	echo "$current_path" | sed -e 's/:/ /g' | xargs -n 1 echo > "$fifoname" &
+	exec 3<"$fifoname"
+	while read -u 3 patharr[$i]
+	do
+		i=$i+1
+	done
+	exec 3<&-
+	unlink "$fifoname"
+	echo $oneline
+}
+
+function update_path ()
+{
+	current_path=''
+	local -i i=0
+	local firsttime="yes"
+	while [ "${patharr[$i]}" ]
+	do
+		if [ '!' "${patharr[$i]}" = ":" ]
+		then
+			if [ "$firsttime" ] 
+			then
+				firsttime=''
+			else
+				current_path+=':'
+			fi
+			current_path+="${patharr[$i]}"
+		fi
+		i=$i+1
+	done
+}
+
+function path_editor ()
+{
+	export current_path="$PATH"
+	local should_continue="yes"
+	local command
+	local command_sub
+	local command_sub2
+	local -i i
+	while [ "$should_continue" ]
+	do
+		split_path
+		i=0
+		while [ "${patharr[$i]}" ]
+		do
+			echo "$i: ${patharr[$i]}"
+			i=$i+1
+		done
+		read -e -p "(A)ppend/(D)elete/(E)dit/(M)ove/(R)eset/(Q)uit ? " command
+		case "$command" in
+			A|a)
+				read -e -p "Type new entry: " patharr[$i]
+				update_path
+				;;
+			D|d)
+				read -e -p "Line: " command_sub
+				patharr[$command_sub]=':'
+				update_path
+				;;
+			E|e)
+				read -e -p "Line: " command_sub
+				read -e -p "Modify this entry: " -i "${patharr[$command_sub]}" patharr[$command_sub] 
+				update_path
+				;;
+			M|m)
+				read -e -p "Exchange: " command_sub
+				read -e -p "With: " command_sub2
+				swaptmp="${patharr[$command_sub]}"
+				patharr[$command_sub]="${patharr[$command_sub2]}"
+				patharr[$command_sub2]="$swaptmp"
+				unset swaptmp
+				update_path
+				;;
+			R|r)
+				current_path="$PATH"
+				;;
+			Q|q)
+				PATH="$current_path"
+				echo "PATH=$PATH"
+				should_continue=''
+				;;
+			*)
+				echo " *** Unknown command *** "
+				;;
+		esac
+	done
+	unset patharr
+}
+
+########## PATH Editor End ##########
+
 # Doing something
 
 check_important_files