Edit a string with the users preferred text editor using $VISUAL or $ENVIRONMENT
npm install external-editor
A node module to edit a string with a users preferred text editor using $VISUAL or $ENVIRONMENT.
Version: 3.1.0
As of version 3.0.0, the minimum version of node supported is 4.
npm install external-editor --save
A simple example using the .edit convenience method
import {edit} from "external-editor";
const data = edit('\n\n# Please write your text above');
console.log(data);
A full featured example
import {ExternalEditor, CreateFileError, ReadFileError, RemoveFileError} from "external-editor"
try {
const editor = new ExternalEditor();
const text = editor.run() // the text is also available in editor.text
if (editor.last_exit_status !== 0) {
console.log("The editor exited with a non-zero code");
}
} catch (err) {
if (err instanceOf CreateFileError) {
console.log('Failed to create the temporary file');
} else if (err instanceOf ReadFileError) {
console.log('Failed to read the temporary file');
} else if (err instanceOf LaunchEditorError) {
console.log('Failed to launch your editor');
} else {
throw err;
}
}
// Do things with the text
// Eventually call the cleanup to remove the temporary file
try {
editor.cleanup();
} catch (err) {
if (err instanceOf RemoveFileError) {
console.log('Failed to remove the temporary file');
} else {
throw err
}
}
#### API
Convenience Methods
- edit(text, config)
- text (string) Optional Defaults to empty string
- config (Config) Optional Options for temporary file creation
- Returns (string) The contents of the file
- Could throw CreateFileError, ReadFileError, or LaunchEditorError, or RemoveFileError
- editAsync(text, callback, config)
- text (string) Optional Defaults to empty string
- callback (function (error, text))
- error could be of type CreateFileError, ReadFileError, or LaunchEditorError, or RemoveFileError
- text(string) The contents of the file
- config (Config) Optional Options for temporary file creation
Errors
- CreateFileError Error thrown if the temporary file could not be created.
- ReadFileError Error thrown if the temporary file could not be read.
- RemoveFileError Error thrown if the temporary file could not be removed during cleanup.
- LaunchEditorError Error thrown if the editor could not be launched.
External Editor Public Methods
- new ExternalEditor(text, config)
- text (string) Optional Defaults to empty string
- config (Config) Optional Options for temporary file creation
- Could throw CreateFileError
- run() Launches the editor.
- Returns (string) The contents of the file
- Could throw LaunchEditorError or ReadFileError
- runAsync(callback) Launches the editor in an async way
- callback (function (error, text))
- error could be of type ReadFileError or LaunchEditorError
- text(string) The contents of the file
- cleanup() Removes the temporary file.
- Could throw RemoveFileError
External Editor Public Properties
- text (string) readonly The text in the temporary file.
- editor.bin (string) The editor determined from the environment.
- editor.args (array) Default arguments for the bin
- tempFile (string) Path to temporary file. Can be changed, but be careful as the temporary file probably already
exists and would need be removed manually.
- lastExitStatus (number) The last exit code emitted from the editor.
Config Options
- prefix (string) Optional A prefix for the file name.
- postfix (string; Optional A postfix for the file name. Useful if you want to provide an extension.
- mode (number) Optional Which mode to create the file with. e.g. 644
- template (string) Optional A template for the filename. See tmp.
- dir (string) Optional Which path to store the file.
All errors have a simple message explaining what went wrong. They all also have an originalError property containing
the original error thrown for debugging purposes.
If async is really needed, you can use editAsync or runAsync. If you are using readline or have anything else
listening to the stdin or you write to stdout, you will most likely have problem, so make sure to remove any other
listeners on stdin, stdout, or stderr.
- NodeJS 0.12 support dropped.
- Switched to named imports.
- All "snake_cased" variables and properties are now "camelCased".
- ExternalEditor.temp_file is now ExternalEditor.tempFile.
- ExternalEditor.last_exit_status is now ExternalEditor.lastExitStatus.
- Error.original_error is now Error.originalError.
The MIT License (MIT)
Copyright (c) 2016-2018 Kevin Gravier
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.