Implement bash CTRL-R reverse history

Fork customized liner into own repo bash.
Rename -being and -end options to -after and -before.

README.md

@@ -2,33 +2,15 @@
 hs9001 (history search 9001) is an easy, quite simple bash history enhancement. It simply writes all
 your bash commands into an sqlite database. You can then search this database.
 
-It improves over bash's built-in history mechanism as it'll aggregate the shell history of all open shells,
-timestamp them and also record additional information such as the directory a command was executed in.
-
-## Usage / Examples
-### Search
-
-```
-hs [search terms]
-```
-You can further filter with options like `-cwd`, `-after` and so on...
-For a full list, see `-help`.
-
-```
-hs -cwd . 
-``` 
-Lists all commands ever entered in this directory
-
-```
-hs -after yesterday -cwd . git
-``` 
-Lists all git commands in the current directory which have been entered today.
-
-Also, it (by default) replaces bash's built-in CTRL-R mechanism, so hs9001's database will be used instead
-of bash's limited history files. 
 
 ## Install
 
+### From source
+```
+go build
+#move hs9001 to a PATH location
+```
+
 ### Debian / Ubuntu
 Latest release can be installed using apt
 ```
@@ -46,26 +28,31 @@ apk update
 apk add hs9001
 ```
 
-### From source
-```
-go build
-#move hs9001 to a PATH location
-```
 
-## Setup / Config
+### Setup / Config
 
 Add this to .bashrc
 
 ```
 eval "$(hs9001 bash-enable)"
 ```
-
-This will also create a `hs`alias so you have to type less in everyday usage.
-
 By default, every system user gets his own database. You can override this by setting the environment variable
 for all users that should write to your unified database.
+
 ```
 export HS9001_DB_PATH="/home/db/history.sqlite"
 ```
 
+## Usage
+### Search
+
+```
+hs9001 search [search terms]
+```
+
+It is recommended to create an alias for search to make life easier, e. g.:
+
+```
+alias searchh='hs9001 search'
+```
 

history.go

@@ -13,14 +13,11 @@ type history struct {
 
 func (h *history) GetHistoryByPrefix(prefix string) (ph []string) {
 	opts := searchopts{}
-	o := "DESC"
+	opts.order = "DESC"
-	opts.order = &o
-	lim := 100
-	opts.limit = &lim
 	cmdqry := prefix + "%"
 	opts.command = &cmdqry
 	results := search(h.conn, opts)
-	for e := results.Back(); e != nil; e = e.Prev() {
+	for e := results.Front(); e != nil; e = e.Next() {
 		entry, ok := e.Value.(*HistoryEntry)
 		if !ok {
 			log.Panic("Failed to retrieve entries")
@@ -31,14 +28,11 @@ func (h *history) GetHistoryByPrefix(prefix string) (ph []string) {
 }
 func (h *history) GetHistoryByPattern(pattern string) (ph []string, pos []int) {
 	opts := searchopts{}
-	o := "DESC"
+	opts.order = "DESC"
-	opts.order = &o
-	lim := 100
-	opts.limit = &lim
 	cmdqry := "%" + pattern + "%"
 	opts.command = &cmdqry
 	results := search(h.conn, opts)
-	for e := results.Back(); e != nil; e = e.Prev() {
+	for e := results.Front(); e != nil; e = e.Next() {
 		entry, ok := e.Value.(*HistoryEntry)
 		if !ok {
 			log.Panic("Failed to retrieve entries")

main.go

@@ -157,8 +157,7 @@ type searchopts struct {
 	after   *time.Time
 	before  *time.Time
 	retval  *int
-	order   *string
+	order   string
-	limit   *int
 }
 
 func search(conn *sql.DB, opts searchopts) list.List {
@@ -189,18 +188,7 @@ func search(conn *sql.DB, opts searchopts) list.List {
 		args = append(args, opts.retval)
 	}
 	sb.WriteString("ORDER BY timestamp ")
-	if opts.order != nil {
+	sb.WriteString("ASC ")
-		sb.WriteString(*opts.order)
-		sb.WriteRune(' ')
-	} else {
-		sb.WriteString("ASC ")
-	}
-
-	if opts.limit != nil {
-		sb.WriteString("LIMIT ")
-		sb.WriteString(strconv.Itoa(*opts.limit))
-		sb.WriteRune(' ')
-	}
 
 	queryStmt := sb.String()
 
@@ -321,7 +309,6 @@ func main() {
 				PROMPT_COMMAND='hs9001 add -ret $? "$(history 1)"'
 				bind -x '"\C-r": " READLINE_LINE=$(hs9001 bash-ctrlr 3>&1 1>&2 2>&3) READLINE_POINT=0"'
 			fi
-			alias hs='hs9001 search'
 		`)
 	case "bash-disable":
 		fmt.Printf("unset PROMPT_COMMAND\n")
@@ -365,8 +352,7 @@ func main() {
 		q := strings.Join(args, " ")
 
 		opts := searchopts{}
-		o := "ASC"
+		opts.order = "ASC"
-		opts.order = &o
 		if q != "" {
 			cmd := "%" + q + "%"
 			opts.command = &cmd