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*sublime* |
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/examplenoise/examplenoise |
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Copyright (c) 2013, Geert-Johan Riemer |
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All rights reserved. |
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|
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions are met: |
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|
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1. Redistributions of source code must retain the above copyright notice, this |
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list of conditions and the following disclaimer. |
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2. Redistributions in binary form must reproduce the above copyright notice, |
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this list of conditions and the following disclaimer in the documentation |
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and/or other materials provided with the distribution. |
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|
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR |
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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## go.linenoise |
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go.linenoise is a [go](http://golang.org) package wrapping the [linenoise](https://github.com/antirez/linenoise) C library. |
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This package does not compile on windows. |
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### Documentation |
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Documentation can be found at [godoc.org/github.com/GeertJohan/go.linenoise](http://godoc.org/github.com/GeertJohan/go.linenoise). |
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An example is located in the folder [examplenoise](examplenoise). |
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|
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### License |
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All code in this repository is licensed under a BSD license. |
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This project wraps [linenoise](https://github.com/antirez/linenoise) which is written by Salvatore Sanfilippo and Pieter Noordhuis. The license for linenoise is included in the files `linenoise.c` and `linenoise.h`. |
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For all other files please read the [LICENSE](LICENSE) file. |
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// Package linenoise wraps the linenoise library (https://github.com/antirez/linenoise).
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//
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// The package is imported with "go." prefix
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// import "github.com/GeertJohan/go.linenoise"
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//
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// Simple readline usage:
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// linenoise.Line("prompt> ")
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//
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// Adding lines to history, you could simply do this for every line you read.
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// linenoise.AddHistory("This will be displayed in prompt when arrow-up is pressed")
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package linenoise |
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package main |
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import ( |
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"fmt" |
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"github.com/GeertJohan/go.linenoise" |
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"os" |
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"strings" |
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) |
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func main() { |
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fmt.Println("Welcome to go.linenoise example.") |
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writeHelp() |
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for { |
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str, err := linenoise.Line("prompt> ") |
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if err != nil { |
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if err == linenoise.KillSignalError { |
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quit() |
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} |
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fmt.Println("Unexpected error: %s", err) |
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quit() |
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} |
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fields := strings.Fields(str) |
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// check if there is any valid input at all
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if len(fields) == 0 { |
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writeUnrecognized() |
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continue |
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} |
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// switch on the command
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switch fields[0] { |
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case "help": |
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writeHelp() |
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case "echo": |
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fmt.Printf("echo: %s\n\n", str[5:]) |
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case "clear": |
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linenoise.Clear() |
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case "multiline": |
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fmt.Println("Setting linenoise to multiline") |
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linenoise.SetMultiline(true) |
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case "singleline": |
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fmt.Println("Setting linenoise to singleline") |
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linenoise.SetMultiline(false) |
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case "complete": |
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fmt.Println("Setting arguments as completion values for linenoise.") |
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fmt.Printf("%d arguments: %s\n", len(fields)-1, fields[1:]) |
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completionHandler := func(in string) []string { |
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return fields[1:] |
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} |
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linenoise.SetCompletionHandler(completionHandler) |
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case "printKeyCodes": |
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linenoise.PrintKeyCodes() |
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case "addHistory": |
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if len(str) < 12 { |
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fmt.Println("No argument given.") |
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} |
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err := linenoise.AddHistory(str[11:]) |
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if err != nil { |
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fmt.Printf("Error: %s\n", err) |
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} |
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case "save": |
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if len(fields) != 2 { |
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fmt.Println("Error. Expecting 'save <filename>'.") |
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continue |
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} |
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err := linenoise.SaveHistory(fields[1]) |
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if err != nil { |
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fmt.Printf("Error on save: %s\n", err) |
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} |
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case "load": |
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if len(fields) != 2 { |
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fmt.Println("Error. Expecting 'load <filename>'.") |
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continue |
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} |
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err := linenoise.LoadHistory(fields[1]) |
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if err != nil { |
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fmt.Printf("Error on load: %s\n", err) |
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} |
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case "quit": |
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quit() |
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default: |
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writeUnrecognized() |
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} |
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} |
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} |
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func quit() { |
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fmt.Println("Thanks for running the go.linenoise example.") |
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fmt.Println("") |
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os.Exit(0) |
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} |
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func writeHelp() { |
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fmt.Println("help write this message") |
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fmt.Println("echo ... echo the arguments") |
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fmt.Println("clear clear the screen") |
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fmt.Println("multiline set linenoise to multiline") |
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fmt.Println("singleline set linenoise to singleline") |
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fmt.Println("complete ... set arguments as completion values") |
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fmt.Println("addHistory ... add arguments to linenoise history") |
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fmt.Println("save <filename> save the history to file") |
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fmt.Println("load <filename> load the history from file") |
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fmt.Println("quit stop the program") |
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fmt.Println("") |
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fmt.Println("Use the arrow up and down keys to walk through history.") |
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fmt.Println("Note that you have to use addHistory to create history entries. Commands are not added to history in this example.") |
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fmt.Println("") |
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} |
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func writeUnrecognized() { |
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fmt.Println("Unrecognized command. Use 'help'.") |
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} |
File diff suppressed because it is too large
Load Diff
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package linenoise |
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// -windows
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// #include <stdlib.h>
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// #include "linenoise.h"
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// #include "linenoiseCompletionCallbackHook.h"
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import "C" |
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import ( |
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"errors" |
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"unsafe" |
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) |
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// KillSignalError is returned returned by Line() when a user quits from prompt.
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// This occurs when the user enters ctrl+C or ctrl+D.
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var KillSignalError = errors.New("prompt was quited with a killsignal") |
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func init() { |
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C.linenoiseSetupCompletionCallbackHook() |
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} |
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// Line displays given string and returns line from user input.
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func Line(prompt string) (string, error) { // char *linenoise(const char *prompt);
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promptCString := C.CString(prompt) |
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resultCString := C.linenoise(promptCString) |
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C.free(unsafe.Pointer(promptCString)) |
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defer C.free(unsafe.Pointer(resultCString)) |
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if resultCString == nil { |
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return "", KillSignalError |
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} |
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result := C.GoString(resultCString) |
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return result, nil |
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} |
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// AddHistory adds a line to history. Returns non-nil error on fail.
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func AddHistory(line string) error { // int linenoiseHistoryAdd(const char *line);
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lineCString := C.CString(line) |
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res := C.linenoiseHistoryAdd(lineCString) |
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C.free(unsafe.Pointer(lineCString)) |
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if res != 1 { |
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return errors.New("Could not add line to history.") |
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} |
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return nil |
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} |
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// SetHistoryCapacity changes the maximum length of history. Returns non-nil error on fail.
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func SetHistoryCapacity(capacity int) error { // int linenoiseHistorySetMaxLen(int len);
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res := C.linenoiseHistorySetMaxLen(C.int(capacity)) |
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if res != 1 { |
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return errors.New("Could not set history max len.") |
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} |
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return nil |
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} |
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// SaveHistory saves from file with given filename. Returns non-nil error on fail.
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func SaveHistory(filename string) error { // int linenoiseHistorySave(char *filename);
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filenameCString := C.CString(filename) |
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res := C.linenoiseHistorySave(filenameCString) |
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C.free(unsafe.Pointer(filenameCString)) |
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if res != 0 { |
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return errors.New("Could not save history to file.") |
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} |
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return nil |
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} |
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// LoadHistory loads from file with given filename. Returns non-nil error on fail.
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func LoadHistory(filename string) error { // int linenoiseHistoryLoad(char *filename);
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filenameCString := C.CString(filename) |
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res := C.linenoiseHistoryLoad(filenameCString) |
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C.free(unsafe.Pointer(filenameCString)) |
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if res != 0 { |
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return errors.New("Could not load history from file.") |
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} |
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return nil |
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} |
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// Clear clears the screen.
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func Clear() { // void linenoiseClearScreen(void);
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C.linenoiseClearScreen() |
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} |
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// SetMultiline sets linenoise to multiline or single line.
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// In multiline mode the user input will be wrapped to a new line when the length exceeds the amount of available rows in the terminal.
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func SetMultiline(ml bool) { // void linenoiseSetMultiLine(int ml);
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if ml { |
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C.linenoiseSetMultiLine(1) |
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} else { |
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C.linenoiseSetMultiLine(0) |
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} |
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} |
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// CompletionHandler provides possible completions for given input
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type CompletionHandler func(input string) []string |
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// DefaultCompletionHandler simply returns an empty slice.
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var DefaultCompletionHandler = func(input string) []string { |
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return make([]string, 0) |
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} |
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var complHandler = DefaultCompletionHandler |
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// SetCompletionHandler sets the CompletionHandler to be used for completion
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func SetCompletionHandler(c CompletionHandler) { |
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complHandler = c |
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} |
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// typedef struct linenoiseCompletions {
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// size_t len;
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// char **cvec;
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// } linenoiseCompletions;
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// typedef void(linenoiseCompletionCallback)(const char *, linenoiseCompletions *);
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// void linenoiseSetCompletionCallback(linenoiseCompletionCallback *);
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// void linenoiseAddCompletion(linenoiseCompletions *, char *);
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//export linenoiseGoCompletionCallbackHook
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func linenoiseGoCompletionCallbackHook(input *C.char, completions *C.linenoiseCompletions) { |
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completionsSlice := complHandler(C.GoString(input)) |
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completionsLen := len(completionsSlice) |
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completions.len = C.size_t(completionsLen) |
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if completionsLen > 0 { |
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cvec := C.malloc(C.size_t(int(unsafe.Sizeof(*(**C.char)(nil))) * completionsLen)) |
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cvecSlice := (*(*[999999]*C.char)(cvec))[:completionsLen] |
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for i, str := range completionsSlice { |
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cvecSlice[i] = C.CString(str) |
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} |
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completions.cvec = (**C.char)(cvec) |
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} |
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} |
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// PrintKeyCodes puts linenoise in key codes debugging mode.
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// Press keys and key combinations to see key codes. Type 'quit' at any time to exit.
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// PrintKeyCodes blocks until user enters 'quit'.
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func PrintKeyCodes() { // void linenoisePrintKeyCodes(void);
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C.linenoisePrintKeyCodes() |
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} |
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/* linenoise.h -- guerrilla line editing library against the idea that a
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* line editing lib needs to be 20,000 lines of C code. |
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* |
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* See linenoise.c for more information. |
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* |
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* ------------------------------------------------------------------------ |
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* |
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* Copyright (c) 2010-2014, Salvatore Sanfilippo <antirez at gmail dot com> |
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* Copyright (c) 2010-2013, Pieter Noordhuis <pcnoordhuis at gmail dot com> |
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* |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* * Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef __LINENOISE_H |
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#define __LINENOISE_H |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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typedef struct linenoiseCompletions { |
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size_t len; |
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char **cvec; |
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} linenoiseCompletions; |
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typedef void(linenoiseCompletionCallback)(const char *, linenoiseCompletions *); |
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void linenoiseSetCompletionCallback(linenoiseCompletionCallback *); |
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void linenoiseAddCompletion(linenoiseCompletions *, const char *); |
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char *linenoise(const char *prompt); |
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int linenoiseHistoryAdd(const char *line); |
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int linenoiseHistorySetMaxLen(int len); |
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int linenoiseHistorySave(const char *filename); |
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int linenoiseHistoryLoad(const char *filename); |
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void linenoiseClearScreen(void); |
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void linenoiseSetMultiLine(int ml); |
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void linenoisePrintKeyCodes(void); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* __LINENOISE_H */ |
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#include "linenoiseCompletionCallbackHook.h" |
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extern void linenoiseGoCompletionCallbackHook(const char *, linenoiseCompletions *); |
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void linenoiseSetupCompletionCallbackHook() { |
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linenoiseSetCompletionCallback(linenoiseGoCompletionCallbackHook); |
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} |
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#include <stdlib.h> |
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#include "linenoise.h" |
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void linenoiseSetupCompletionCallbackHook(); |
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package linenoise |
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// #include <stdlib.h>
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// #include "linenoise.h"
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import "C" |
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// this will break a go build on windows and display the string on console
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"go.linenoise does not support windows." |
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