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nodeJS/Project/01/node_modules/prompt-sync/README.md
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nodeJS/Project/01/node_modules/prompt-sync/README.md
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# SYNOPSIS
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A sync prompt for node. very simple. no C++ bindings and no bash scripts.
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Works on Linux, OS X and Windows.
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# BASIC MODE
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```js
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var prompt = require('prompt-sync')();
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//
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// get input from the user.
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//
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var n = prompt('How many more times? ');
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```
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# WITH HISTORY
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History is an optional extra, to use simply install the history plugin.
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```sh
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npm install --save prompt-sync-history
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```
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```js
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var prompt = require('prompt-sync')({
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history: require('prompt-sync-history')() //open history file
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});
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//get some user input
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var input = prompt()
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prompt.history.save() //save history back to file
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```
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See the [prompt-sync-history](http://npm.im/prompt-sync-history) module
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for options, or fork it for customized behaviour.
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# API
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## `require('prompt-sync')(config) => prompt`
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Returns an instance of the `prompt` function.
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Takes `config` option with the following possible properties
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`sigint`: Default is `false`. A ^C may be pressed during the input process to abort the text entry. If sigint it `false`, prompt returns `null`. If sigint is `true` the ^C will be handled in the traditional way: as a SIGINT signal causing process to exit with code 130.
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`eot`: Default is `false`. A ^D pressed as the first character of an input line causes prompt-sync to echo `exit` and exit the process with code 0.
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`autocomplete`: A completer function that will be called when user enters TAB to allow for autocomplete. It takes a string as an argument an returns an array of strings that are possible matches for completion. An empty array is returned if there are no matches.
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`history`: Takes an object that supplies a "history interface", see [prompt-sync-history](http://npm.im/prompt-sync-history) for an example.
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## `prompt(ask, value, opts)`
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`ask` is the label of the prompt, `value` is the default value
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in absence of a response.
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The `opts` argument can also be in the first or second parameter position.
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Opts can have the following properties
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`echo`: Default is `'*'`. If set the password will be masked with the specified character. For hidden input, set echo to `''` (or use `prompt.hide`).
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`autocomplete`: Overrides the instance `autocomplete` function to allow for custom
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autocompletion of a particular prompt.
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`value`: Same as the `value` parameter, the default value for the prompt. If `opts`
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is in the third position, this property will *not* overwrite the `value` parameter.
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`ask`: Sames as the `value` parameter. The prompt label. If `opts` is not in the first position, the `ask` parameter will *not* be overridden by this property.
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## `prompt.hide(ask)`
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Convenience method for creating a standard hidden password prompt,
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this is the same as `prompt(ask, {echo: ''})`
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# LINE EDITING
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Line editing is enabled in the non-hidden mode. (use up/down arrows for history and backspace and left/right arrows for editing)
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History is not set when using hidden mode.
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# EXAMPLES
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```js
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//basic:
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console.log(require('prompt-sync')()('tell me something about yourself: '))
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var prompt = require('prompt-sync')({
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history: require('prompt-sync-history')(),
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autocomplete: complete(['hello1234', 'he', 'hello', 'hello12', 'hello123456']),
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sigint: false
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});
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var value = 'frank';
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var name = prompt('enter name: ', value);
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console.log('enter echo * password');
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var pw = prompt({echo: '*'});
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var pwb = prompt('enter hidden password (or don\'t): ', {echo: '', value: '*pwb default*'})
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var pwc = prompt.hide('enter another hidden password: ')
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var autocompleteTest = prompt('custom autocomplete: ', {
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autocomplete: complete(['bye1234', 'by', 'bye12', 'bye123456'])
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});
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prompt.history.save();
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console.log('\nName: %s\nPassword *: %s\nHidden password: %s\nAnother Hidden password: %s', name, pw, pwb, pwc);
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console.log('autocomplete2: ', autocompleteTest);
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function complete(commands) {
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return function (str) {
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var i;
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var ret = [];
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for (i=0; i< commands.length; i++) {
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if (commands[i].indexOf(str) == 0)
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ret.push(commands[i]);
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}
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return ret;
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};
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};
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```
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