Gulp-md5-thing NPM

gulp-md5-thing

Insert an MD5 hash into afilenames and retrieve information about the generated hash and hashed filename

npm install --save-dev gulp-md5-thing

Usage

var md5Dict = {};

var gulp_md5_thing = require("gulp-md5-thing");

gulp.src("./src/*.ext")
		.pipe(gulp_md5_thing( arg ))
		.pipe(gulp.dest("./dist"));

API

gulp_md5_thing( arg )

arg

	Type: `String` or `Object` 
	Optional: 
	If type == `String`:
			'arg'  is a number representing the number of characters from the md5 hash string to be used in the filename

	If type == `Object`:
			'arg' may have any or all of the following properties : 
					'size'		  : A number representing the number of characters from the md5 hash string to be used in the filename
					'separator' : A custom separator between the filename and the md5 hash ( e.g. '', '_', '---' )
					'inject'		: A string 'search and replace' token. 
													If provided, and if the token string is present in the file it will be replaced with the md5 hash, 
													calulated on the file's contents before the hash is injected.
					'md5info'   : A reference to a dictionary which will be populated with an entry for each filename processed during execution.
											  		Each entry will contain the following properties after execution:
											   				'hash'				   : The md5 hash created (truncated if 'size' was specified)
											   		 		'hashedfilename' : The new filename with md5 hash inserted
											   		 		'hashedfilepath' : The new filepath with md5 hash inserted

	Default: If arg is omitted a full 32 character md5 hash is used and the separator is '-'

Example

Given the directory structure:

top/
├── src/
		├── file.a.ext
		├── file.b.ext
		├── file.c.ext
		├── file.d.txt
├── dist/
├── ...

and a set of source files, one of which (file.a.ext) contains the replacement token string : '{{MD5_HASH}}'

   var md5_info = {};
   gulp.src('src/**/*.ext', {base: './top'})
				.pipe(gulp_md5_thing({size:6, inject:'{{MD5_HASH}}', separator:'_', md5info:md5_info}))
				.pipe(gulp.dest('./dist'));

will result in:

top/
├── src/
		├── file.a.ext
		├── file.b.ext
		├── file.c.ext
		├── file.d.txt
├── dist/
		├── file.a_6b85e3.ext
		├── file.b_53ef22.ext
		├── file.c_2b86b1.ext
├── ...

and

console.log( md5_info['file.a.ext'].hash );						//  6b85e3
console.log( md5_info['file.a.ext'].hashedfilename );  //  file.a_6b85e3.ext
console.log( md5_info['file.a.ext'].hashedfilepath );  //  src/file.a_6b85e3.ext
. . . 
etc.

and '{{MD5_HASH}}' will be replaced with '6b85e3' in file.a_6b85e3.ext