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Replace text patterns with a given replacement.
First make sure you have installed the latest version of node.js (You may need to restart your computer after this step).
From NPM for use as a command line app:
npm install applause -g
From NPM for programmatic use:
npm install applause
From Git:
git clone git://github.com/outaTiME/applause
cd applause
npm link .
Assuming installation via NPM, you can use applause
in your application like this:
var fs = require('fs');
var Applause = require('applause');
var options = {
patterns: [
{
match: 'foo',
replacement: 'bar'
}
]
};
var applause = Applause.create(options);
var contents = '@@foo';
var result = applause.replace(contents);
console.log(result); // bar
Type: Array
Define patterns that will be used to replace the contents of source files.
Type: String|RegExp
Indicates the matching expression.
If matching type is String
we use a simple variable lookup mechanism @@string
(in any other case we use the default regexp replace logic):
{
patterns: [
{
match: 'foo',
replacement: 'bar' // replaces "@@foo" to "bar"
}
]
}
Type: String|Function|Object
Indicates the replacement for match, for more information about replacement check out the String.replace.
You can specify a function as replacement. In this case, the function will be invoked after the match has been performed. The function's result (return value) will be used as the replacement string.
{
patterns: [
{
match: /foo/g,
replacement: function () {
return 'bar'; // replaces "foo" to "bar"
}
}
]
}
Also supports object as replacement (we create string representation of object using JSON.stringify):
{
patterns: [
{
match: /foo/g,
replacement: [1, 2, 3] // replaces "foo" with string representation of "array" object
}
]
}
Type: Object
If an attribute json
found in pattern definition we flatten the object using delimiter
concatenation and each key–value pair will be used for the replacement (simple variable lookup mechanism and no regexp support).
{
patterns: [
{
json: {
"key": "value" // replaces "@@key" to "value"
}
}
]
}
Also supports nested objects:
{
patterns: [
{
json: {
"key": "value", // replaces "@@key" to "value"
"inner": { // replaces "@@inner" with string representation of "inner" object
"key": "value" // replaces "@@inner.key" to "value"
}
}
}
]
}
For deferred invocations is possible to define functions:
{
patterns: [
{
json: function (done) {
done({
key: 'value'
});
}
}
]
}
Type: String
If an attribute yaml
found in pattern definition will be converted and then processed like json attribute.
{
patterns: [
{
yaml: 'key: value' // replaces "@@key" to "value"
}
]
}
For deferred invocations is possible to define functions:
{
patterns: [
{
yaml: function (done) {
done('key: value');
}
}
]
}
Type: String
If an attribute cson
found in pattern definition will be converted and then processed like json attribute.
{
patterns: [
{
cson: 'key: \'value\''
}
]
}
For deferred invocations is possible to define functions:
{
patterns: [
{
cson: function (done) {
done('key: \'value\'');
}
}
]
}
Type: Object
This is the old way to define patterns using plain object (simple variable lookup mechanism and no regexp support). You can still use this but for more control you should use the new patterns
way.
{
variables: {
'key': 'value' // replaces "@@key" to "value"
}
}
Type: String
Default: @@
The prefix added for matching (prevent bad replacements / easy way).
This only applies for simple variable lookup mechanism.
Type: Boolean
Default: true
If set to false
, we match the pattern without prefix
concatenation (useful when you want to lookup an simple string).
This only applies for simple variable lookup mechanism.
Type: Boolean
Default: false
If set to true
, we preserve the prefix
in target.
This only applies for simple variable lookup mechanism and
patterns.replacement
is an string.
Type: String
Default: .
The delimiter used to flatten when using object as replacement.
Type: Boolean
Default: false
If set to true
, we preserve the patterns definition order, otherwise these will be sorted (in ascending order) to prevent replacement issues like head
/ header
(typo regexps will be resolved at last).
File src/manifest.appcache
:
CACHE MANIFEST
# @@timestamp
CACHE:
favicon.ico
index.html
NETWORK:
*
Node:
var fs = require('fs');
var Applause = require('applause');
var options = {
patterns: [
{
match: 'timestamp',
replacement: new Date().getTime()
}
]
};
var applause = Applause.create(options);
var contents = fs.readFileSync('./src/manifest.appcache', 'utf8');
var result = applause.replace(contents);
console.log(result); // replaced output
File src/manifest.appcache
:
CACHE MANIFEST
# @@timestamp
CACHE:
favicon.ico
index.html
NETWORK:
*
File src/humans.txt
:
__ _
_ _/__ /./|,//_`
/_//_// /_|/// //_, outaTiME v.@@version
/* TEAM */
Web Developer / Graphic Designer: Ariel Oscar Falduto
Site: http://www.outa.im
Twitter: @outa7iME
Contact: afalduto at gmail dot com
From: Buenos Aires, Argentina
/* SITE */
Last update: @@timestamp
Standards: HTML5, CSS3, robotstxt.org, humanstxt.org
Components: H5BP, Modernizr, jQuery, Twitter Bootstrap, LESS, Jade, Grunt
Software: Sublime Text 2, Photoshop, LiveReload
Node:
var fs = require('fs');
var pkg = require('./package.json');
var Applause = require('applause');
var options = {
patterns: [
{
match: 'version',
replacement: pkg.version
},
{
match: 'timestamp',
replacement: new Date().getTime()
}
]
};
var applause = Applause.create(options);
var contents = fs.readFileSync('./src/manifest.appcache', 'utf8');
var result = applause.replace(contents);
console.log(result); // replaced output
contents = fs.readFileSync('./src/humans.txt', 'utf8');
result = applause.replace(contents);
console.log(result); // replaced output
File src/index.html
:
<head>
<link rel="stylesheet" href="/css/style.css?rel=@@timestamp">
<script src="/js/app.js?rel=@@timestamp"></script>
</head>
Node:
var fs = require('fs');
var Applause = require('applause');
var options = {
patterns: [
{
match: 'timestamp',
replacement: new Date().getTime()
}
]
};
var applause = Applause.create(options);
var contents = fs.readFileSync('./src/index.html', 'utf8');
var result = applause.replace(contents);
console.log(result); // replaced output
File src/index.html
:
<body>
@@include
</body>
Node:
var fs = require('fs');
var Applause = require('applause');
var options = {
patterns: [
{
match: 'include',
replacement: fs.readFileSync('./includes/content.html', 'utf8')
}
]
};
var applause = Applause.create(options);
var contents = fs.readFileSync('./src/index.html', 'utf8');
var result = applause.replace(contents);
console.log(result); // replaced output
File src/username.txt
:
John Smith
Node:
var fs = require('fs');
var Applause = require('applause');
var options = {
patterns: [
{
match: /(\w+)\s(\w+)/,
replacement: '$2, $1' // replaces "John Smith" to "Smith, John"
}
]
};
var applause = Applause.create(options);
var contents = fs.readFileSync('./username.txt', 'utf8');
var result = applause.replace(contents);
console.log(result); // replaced output
foo
instead of @@foo
Node:
var Applause = require('applause');
// option 1 (explicitly using an regexp)
var applause_op1 = Applause.create({
patterns: [
{
match: /foo/g,
replacement: 'bar'
}
]
});
// option 2 (easy way)
var applause_op2 = Applause.create({
patterns: [
{
match: 'foo',
replacement: 'bar'
}
],
usePrefix: false
});
// option 3 (old way)
var applause_op3 = Applause.create({
patterns: [
{
match: 'foo',
replacement: 'bar'
}
],
prefix: '' // remove prefix
});
(Coming soon)
String
.pattern-replace
to applause
(thanks Lady Gaga). Test cases in Mocha and readme updated.Task submitted by Ariel Falduto