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Feature: interact-mode with completion and history (#108)
* use 'peterh/liner' in interact-mode * support abbr completion in interact mode * better completion in interact mode: realnames first, then abbrs
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,2 +1,6 @@ | ||
github.com/mattn/go-runewidth v0.0.3 h1:a+kO+98RDGEfo6asOGMmpodZq4FNtnGP54yps8BzLR4= | ||
github.com/mattn/go-runewidth v0.0.3/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU= | ||
github.com/mattn/go-shellwords v1.0.11 h1:vCoR9VPpsk/TZFW2JwK5I9S0xdrtUq2bph6/YjEPnaw= | ||
github.com/mattn/go-shellwords v1.0.11/go.mod h1:EZzvwXDESEeg03EKmM+RmDnNOPKG4lLtQsUlTZDWQ8Y= | ||
github.com/peterh/liner v1.2.1 h1:O4BlKaq/LWu6VRWmol4ByWfzx6MfXc5Op5HETyIy5yg= | ||
github.com/peterh/liner v1.2.1/go.mod h1:CRroGNssyjTd/qIG2FyxByd2S8JEAZXBl4qUrZf8GS0= |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,92 @@ | ||
package builtin | ||
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import ( | ||
"fmt" | ||
"os" | ||
"path/filepath" | ||
"strings" | ||
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"github.com/peterh/liner" | ||
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"github.com/pingcap/ticat/pkg/cli/core" | ||
"github.com/pingcap/ticat/pkg/cli/display" | ||
) | ||
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func InteractiveMode(cc *core.Cli, env *core.Env, exitStr string) { | ||
cc.Screen.Print(display.ColorExplain("(ctl-c to leave)\n", env)) | ||
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cc = cc.CopyForInteract() | ||
sessionEnv := env.GetLayer(core.EnvLayerSession) | ||
sessionEnv.SetBool("sys.interact.inside", true) | ||
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seqSep := env.GetRaw("strs.seq-sep") | ||
selfName := env.GetRaw("strs.self-name") | ||
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lineReader := liner.NewLiner() | ||
defer lineReader.Close() | ||
lineReader.SetCtrlCAborts(true) | ||
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names := cc.Cmds.GatherNames() | ||
lineReader.SetCompleter(func(line string) (res []string) { | ||
fields := strings.Fields(line) | ||
field := strings.TrimLeft(fields[len(fields)-1], seqSep) | ||
prefix := line[0 : len(line)-len(field)] | ||
for _, name := range names { | ||
if strings.HasPrefix(name, field) { | ||
res = append(res, prefix+name) | ||
} | ||
} | ||
return | ||
}) | ||
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historyDir := filepath.Join(os.TempDir(), ".ticat_interact_mode_cmds_history") | ||
if file, err := os.Open(historyDir); err == nil { | ||
lineReader.ReadHistory(file) | ||
file.Close() | ||
} | ||
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for { | ||
if env.GetBool("sys.interact.leaving") { | ||
break | ||
} | ||
line, err := lineReader.Prompt(selfName + "> ") | ||
if err == liner.ErrPromptAborted { | ||
break | ||
} | ||
if err != nil { | ||
panic(fmt.Errorf("[InteractMode] read from stdin failed: %v", err)) | ||
} | ||
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lineReader.AppendHistory(line) | ||
executorSafeExecute("(interact)", cc, env, nil, core.FlowStrToStrs(line)...) | ||
} | ||
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sessionEnv.GetLayer(core.EnvLayerSession).Delete("sys.interact.inside") | ||
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file, err := os.Create(historyDir) | ||
if err != nil { | ||
panic(fmt.Errorf("[InteractMode] error writing history file: %v", err)) | ||
} | ||
lineReader.WriteHistory(file) | ||
file.Close() | ||
} | ||
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func executorSafeExecute(caller string, cc *core.Cli, env *core.Env, masks []*core.ExecuteMask, input ...string) { | ||
env = env.GetLayer(core.EnvLayerSession) | ||
stackDepth := env.GetRaw("sys.stack-depth") | ||
stack := env.GetRaw("sys.stack") | ||
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defer func() { | ||
env.Set("sys.stack-depth", stackDepth) | ||
env.Set("sys.stack", stack) | ||
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if !env.GetBool("sys.panic.recover") { | ||
return | ||
} | ||
if r := recover(); r != nil { | ||
display.PrintError(cc, env, r.(error)) | ||
} | ||
}() | ||
|
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cc.Executor.Execute(caller, false, cc, env, masks, input...) | ||
} |
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