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Implement mode for reverse search in cwd 

Add a mode selection mode to liner.

Add modes to search globally or in the cwd.
This commit is contained in:
Albert S. 2021-09-25 11:33:37 +02:00
parent 3a6a1b2aa9
commit 0949ee422a
3 changed files with 81 additions and 29 deletions
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39
history.go
View File

@ -2,8 +2,10 @@ package main
import (
"database/sql"
"hs9001/liner"
"io"
"log"
"path/filepath"
"strings"
)
@ -11,14 +13,32 @@ type history struct {
conn *sql.DB
}
func (h *history) GetHistoryByPrefix(prefix string) (ph []string) {
func createSearchOpts(query string, mode int) searchopts {
opts := searchopts{}
o := "DESC"
opts.order = &o
lim := 100
opts.limit = &lim
cmdqry := prefix + "%"
opts.command = &cmdqry
opts.command = &query
switch mode {
case liner.ModeGlobal:
break
case liner.ModeWorkdir:
workdir, err := filepath.Abs(".")
if err != nil {
panic(err)
}
opts.workdir = &workdir
default:
panic("Invalid mode supplied")
}
return opts
}
func (h *history) GetHistoryByPrefix(prefix string, mode int) (ph []string) {
cmdquery := prefix + "%"
opts := createSearchOpts(cmdquery, mode)
results := search(h.conn, opts)
for e := results.Back(); e != nil; e = e.Prev() {
entry, ok := e.Value.(*HistoryEntry)
@ -29,14 +49,11 @@ func (h *history) GetHistoryByPrefix(prefix string) (ph []string) {
}
return
}
func (h *history) GetHistoryByPattern(pattern string) (ph []string, pos []int) {
opts := searchopts{}
o := "DESC"
opts.order = &o
lim := 100
opts.limit = &lim
cmdqry := "%" + pattern + "%"
opts.command = &cmdqry
func (h *history) GetHistoryByPattern(pattern string, mode int) (ph []string, pos []int) {
cmdquery := "%" + pattern + "%"
opts := createSearchOpts(cmdquery, mode)
results := search(h.conn, opts)
for e := results.Back(); e != nil; e = e.Prev() {
entry, ok := e.Value.(*HistoryEntry)

12
liner/common.go
View File

@ -37,8 +37,8 @@ type HistoryProvider interface {
WriteHistory(w io.Writer) (num int, err error)
AppendHistory(item string)
ClearHistory()
GetHistoryByPrefix(prefix string) (ph []string)
GetHistoryByPattern(pattern string) (ph []string, pos []int)
GetHistoryByPrefix(prefix string, mode int) (ph []string)
GetHistoryByPattern(pattern string, mode int) (ph []string, pos []int)
RLock()
RUnlock()
}
@ -95,11 +95,11 @@ func (s *State) AppendHistory(item string) {
func (s *State) ClearHistory() {
s.historyProvider.ClearHistory()
}
func (s *State) getHistoryByPrefix(prefix string) (ph []string) {
return s.historyProvider.GetHistoryByPrefix(prefix)
func (s *State) getHistoryByPrefix(prefix string, mode int) (ph []string) {
return s.historyProvider.GetHistoryByPrefix(prefix, mode)
}
func (s *State) getHistoryByPattern(pattern string) (ph []string, pos []int) {
return s.historyProvider.GetHistoryByPattern(pattern)
func (s *State) getHistoryByPattern(pattern string, mode int) (ph []string, pos []int) {
return s.historyProvider.GetHistoryByPattern(pattern, mode)
}
// SetHistoryProvider allows you to set a custom provider

59
liner/line.go
View File

@ -90,6 +90,11 @@ const (
tabReverse
)
const (
ModeGlobal = iota
ModeWorkdir
)
func (s *State) refresh(prompt []rune, buf []rune, pos int) error {
if s.columns == 0 {
return ErrInternal
@ -411,8 +416,26 @@ func (s *State) tabComplete(p []rune, line []rune, pos int) ([]rune, int, interf
// reverse intelligent search, implements a bash-like history search.
func (s *State) reverseISearch(origLine []rune, origPos int) ([]rune, int, interface{}, error) {
p := "(reverse-i-search)`': "
err := s.refresh([]rune(p), origLine, origPos)
modeSelect := false
currentMode := ModeGlobal
getPrompt := func(arg string) string {
prompt := ""
switch currentMode {
case ModeWorkdir:
prompt = "(reverse:cwd)`%s': "
case ModeGlobal:
prompt = "(reverse:global)`%s': "
default:
panic("Invalid mode")
}
if modeSelect {
prompt = "(select mode)`%s': "
}
return fmt.Sprintf(prompt, arg)
}
err := s.refresh([]rune(getPrompt("")), origLine, origPos)
if err != nil {
return origLine, origPos, rune(esc), err
}
@ -426,11 +449,10 @@ func (s *State) reverseISearch(origLine []rune, origPos int) ([]rune, int, inter
getLine := func() ([]rune, []rune, int) {
search := string(line)
prompt := "(reverse-i-search)`%s': "
return []rune(fmt.Sprintf(prompt, search)), []rune(foundLine), foundPos
return []rune(getPrompt(search)), []rune(foundLine), foundPos
}
history, positions := s.getHistoryByPattern(string(line))
history, positions := s.getHistoryByPattern(string(line), currentMode)
historyPos := len(history) - 1
for {
@ -450,6 +472,8 @@ func (s *State) reverseISearch(origLine []rune, origPos int) ([]rune, int, inter
} else {
s.doBeep()
}
case ctrlA:
modeSelect = true
case ctrlS: // Search forward
if historyPos < len(history)-1 && historyPos >= 0 {
historyPos++
@ -467,7 +491,7 @@ func (s *State) reverseISearch(origLine []rune, origPos int) ([]rune, int, inter
pos -= n
// For each char deleted, display the last matching line of history
history, positions := s.getHistoryByPattern(string(line))
history, positions := s.getHistoryByPattern(string(line), currentMode)
historyPos = len(history) - 1
if len(history) > 0 {
foundLine = history[historyPos]
@ -480,17 +504,28 @@ func (s *State) reverseISearch(origLine []rune, origPos int) ([]rune, int, inter
case ctrlG: // Cancel
return origLine, origPos, rune(esc), err
case tab, cr, lf, ctrlA, ctrlB, ctrlD, ctrlE, ctrlF, ctrlK,
case tab, cr, lf, ctrlB, ctrlD, ctrlE, ctrlF, ctrlK,
ctrlL, ctrlN, ctrlO, ctrlP, ctrlQ, ctrlT, ctrlU, ctrlV, ctrlW, ctrlX, ctrlY, ctrlZ:
fallthrough
case 0, ctrlC, esc, 28, 29, 30, 31:
return []rune(foundLine), foundPos, next, err
default:
if modeSelect {
switch v {
case 'g':
currentMode = ModeGlobal
case 'w':
currentMode = ModeWorkdir
}
modeSelect = false
break
}
line = append(line[:pos], append([]rune{v}, line[pos:]...)...)
pos++
// For each keystroke typed, display the last matching line of history
history, positions = s.getHistoryByPattern(string(line))
history, positions = s.getHistoryByPattern(string(line), currentMode)
historyPos = len(history) - 1
if len(history) > 0 {
foundLine = history[historyPos]
@ -726,7 +761,7 @@ mainLoop:
case ctrlP: // up
historyAction = true
if historyStale {
historyPrefix = s.getHistoryByPrefix(string(line))
historyPrefix = s.getHistoryByPrefix(string(line), ModeGlobal)
historyPos = len(historyPrefix)
historyStale = false
}
@ -744,7 +779,7 @@ mainLoop:
case ctrlN: // down
historyAction = true
if historyStale {
historyPrefix = s.getHistoryByPrefix(string(line))
historyPrefix = s.getHistoryByPrefix(string(line), ModeGlobal)
historyPos = len(historyPrefix)
historyStale = false
}
@ -912,7 +947,7 @@ mainLoop:
case up:
historyAction = true
if historyStale {
historyPrefix = s.getHistoryByPrefix(string(line))
historyPrefix = s.getHistoryByPrefix(string(line), ModeGlobal)
historyPos = len(historyPrefix)
historyStale = false
}
@ -929,7 +964,7 @@ mainLoop:
case down:
historyAction = true
if historyStale {
historyPrefix = s.getHistoryByPrefix(string(line))
historyPrefix = s.getHistoryByPrefix(string(line), ModeGlobal)
historyPos = len(historyPrefix)
historyStale = false
}