deltreey/wildstring
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

screw the module pattern

Browse Source 
this needs to work when minified
http://snook.ca/archives/javascript/no-love-for-module-pattern
This commit is contained in:
deltreey
2015-08-12 23:30:51 -04:00
parent 54d1a9e180
commit 5bc4ed6a86
2 changed files with 138 additions and 150 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
test/test.js
View File

@@ -1,7 +1,7 @@
'use strict'; 'use strict';
var assert = require('assert'), var assert = require('assert'),
wildstring = require('../'); wildstring = require('../wildstring');
describe('wildstring', function() { describe('wildstring', function() {
it('should create an object and set a default wildcard', function() { it('should create an object and set a default wildcard', function() {

284
wildstring.js
View File

@@ -1,20 +1,5 @@
'use strict'; 'use strict';
var wildstring = (function (name, definition) {
if (typeof(module) !== 'undefined') {
module.exports = definition();
}
else if (typeof(define) === 'function' && typeof(define.amd) === 'object') {
define(definition);
}
else if (typeof(this) !== 'undefined') {
this[name] = definition();
}
else {
return definition();
}
}('wildstring', function () {
/** /**
* @namespace wildstring * @namespace wildstring
* @property {string} wildcard the wildcard to use in your strings, defaults to '*' * @property {string} wildcard the wildcard to use in your strings, defaults to '*'
@@ -22,31 +7,103 @@ var wildstring = (function (name, definition) {
*/ */
var wildstring = { var wildstring = {
wildcard: '*', wildcard: '*',
caseSensitive: true caseSensitive: true,
};
/** /**
* When a match doesn't continue to the end of the string, this function rolls back to try again with the rest of the string * When a match doesn't continue to the end of the string, this function rolls back to try again with the rest of the string
* @memberof wildstring * @memberof wildstring
* @access private * @access private
* @param {string[]} rollbackStrings The list of substrings that appeared prior to the current match * @param {string[]} rollbackStrings The list of substrings that appeared prior to the current match
* @param {string[]} patternSubstrings The matching list of pattens that need to be matched before the current pattern * @param {string[]} patternSubstrings The matching list of pattens that need to be matched before the current pattern
*/ */
function checkRollbackStrings (rollbackStrings, patternSubstrings) { checkRollbackStrings: function (rollbackStrings, patternSubstrings) {
for (var s = 0; s < rollbackStrings.length; ++s) { for (var s = 0; s < rollbackStrings.length; ++s) {
var currentString = rollbackStrings[s].string; // starting with the rolled back string var currentString = rollbackStrings[s].string; // starting with the rolled back string
var patternIndex = rollbackStrings[s].index; var patternIndex = rollbackStrings[s].index;
while (patternIndex < patternSubstrings.length) {
if (currentString.indexOf(patternSubstrings[patternIndex]) === -1) {
break;
}
var testString = currentString.substr(1); //remove just one char to retest
rollbackStrings.push({ string: testString, index: patternIndex });
if (testString.indexOf(patternSubstrings[patternIndex]) === -1) {
rollbackStrings.pop();
break;
}
currentString = currentString.substr(
currentString.indexOf(patternSubstrings[patternIndex]) + patternSubstrings[patternIndex].length
);
patternIndex++;
while (patternSubstrings[patternIndex] === '') {
patternIndex++;
}
if (patternIndex >= patternSubstrings.length) {
if (patternSubstrings[patternSubstrings.length - 1] !== '' &&
currentString.length > 0) {
// not ending with a wildcard, we need to backtrack
break;
}
else {
return true;
}
}
}
}
return false;
},
/**
* Check if a string matches a pattern
* @memberof wildstring
* @param {string} pattern The pattern to match using the configured wildcard
* @param {string} string The string to test for a match
*/
match: function (pattern, string) {
// if there are no wildcards, must be exact
if (pattern.indexOf(wildstring.wildcard) === -1) {
return pattern === string;
}
if (!wildstring.caseSensitive) {
pattern = pattern.toLowerCase();
string = string.toLowerCase();
}
var patternSubstrings = pattern.split(wildstring.wildcard);
var patternIndex = 0;
var currentString = string;
// find pattern beginning
while (patternSubstrings[patternIndex] === '') {
patternIndex++;
// if the pattern is just wildcards, it matches
if (patternIndex === pattern.length) {
return true;
}
}
if (patternIndex === 0 && string.indexOf(patternSubstrings[0]) !== 0) {
// not starting with a wildcard
return false;
}
var rollbackStrings = [];
while (patternIndex < patternSubstrings.length) { while (patternIndex < patternSubstrings.length) {
if (currentString.indexOf(patternSubstrings[patternIndex]) === -1) { if (currentString.indexOf(patternSubstrings[patternIndex]) === -1) {
break; return wildstring.checkRollbackStrings(rollbackStrings, patternSubstrings);
} }
// create a queue of strings to roll back and try again if we fail later
var testString = currentString.substr(1); //remove just one char to retest var testString = currentString.substr(1); //remove just one char to retest
rollbackStrings.push({ string: testString, index: patternIndex }); rollbackStrings.push({ string: testString, index: patternIndex });
if (testString.indexOf(patternSubstrings[patternIndex]) === -1) { if (testString.indexOf(patternSubstrings[patternIndex]) === -1) {
rollbackStrings.pop(); rollbackStrings.pop();
break;
} }
currentString = currentString.substr( currentString = currentString.substr(
@@ -57,135 +114,66 @@ function checkRollbackStrings (rollbackStrings, patternSubstrings) {
while (patternSubstrings[patternIndex] === '') { while (patternSubstrings[patternIndex] === '') {
patternIndex++; patternIndex++;
} }
}
if (patternIndex >= patternSubstrings.length) { if (patternIndex >= patternSubstrings.length &&
if (patternSubstrings[patternSubstrings.length - 1] !== '' && patternSubstrings[patternSubstrings.length - 1] !== '' &&
currentString.length > 0) { currentString.length > 0) {
// not ending with a wildcard, we need to backtrack // not ending with a wildcard, we need to backtrack
break; if (currentString === string) { // this string doesn't even match a little
} return false;
else {
return true;
}
} }
}
}
return false; return wildstring.checkRollbackStrings(rollbackStrings, patternSubstrings);
}
/**
* Check if a string matches a pattern
* @memberof wildstring
* @param {string} pattern The pattern to match using the configured wildcard
* @param {string} string The string to test for a match
*/
wildstring.match = function (pattern, string) {
// if there are no wildcards, must be exact
if (pattern.indexOf(wildstring.wildcard) === -1) {
return pattern === string;
}
if (!wildstring.caseSensitive) {
pattern = pattern.toLowerCase();
string = string.toLowerCase();
}
var patternSubstrings = pattern.split(wildstring.wildcard);
var patternIndex = 0;
var currentString = string;
// find pattern beginning
while (patternSubstrings[patternIndex] === '') {
patternIndex++;
// if the pattern is just wildcards, it matches
if (patternIndex === pattern.length) {
return true;
}
}
if (patternIndex === 0 && string.indexOf(patternSubstrings[0]) !== 0) {
// not starting with a wildcard
return false;
}
var rollbackStrings = [];
while (patternIndex < patternSubstrings.length) {
if (currentString.indexOf(patternSubstrings[patternIndex]) === -1) {
return checkRollbackStrings(rollbackStrings, patternSubstrings);
} }
// create a queue of strings to roll back and try again if we fail later return true;
var testString = currentString.substr(1); //remove just one char to retest },
rollbackStrings.push({ string: testString, index: patternIndex });
if (testString.indexOf(patternSubstrings[patternIndex]) === -1) { /**
rollbackStrings.pop(); * Replace wildcards in a pattern with strings (string interpolation)
* @memberof wildstring
* @param {string} pattern The start string, using wildcards as placeholders
* @param {string|string[]} strings The string or strings to replace the wildcards in the pattern.
* If you pass a single string, it will replace all the wildcards with the string.
* If you pass an array of strings, they will replace the wildcards in order from left to right.
* @throws The number of items in the strings array (if you pass an array) must match the number of wildcards in the pattern string.
* @throws You need to pass both parameters
* @throws You need to pass the right types
*/
replace: function (pattern, strings) {
if (pattern === undefined || strings === undefined) {
throw new Error('wildstring.replace takes the pattern as one parameter and either a string or an array of strings as the second. You didn\'t pass enough parameters.');
}
if (typeof(strings) === typeof('')) {
return pattern.replace(wildstring.wildcard, strings);
}
if (!Array.isArray(strings) || typeof(pattern) !== typeof('')) {
throw new Error('wildstring.replace takes the pattern as one parameter and either a string or an array of strings as the second. Your parameter types are incorrect.');
}
if (pattern.indexOf(wildstring.wildcard) === -1) {
return pattern; // if there are no wildcards, just return the pattern
}
var patternSubstrings = pattern.split(wildstring.wildcard);
if (patternSubstrings.length - 1 !== strings.length) {
var message = 'There are a different number of wildcards than strings to replace them. You have ' +
wildstring.wildcard +' wildcards in "' + wildstring.wildcard + '" and ' + wildstring.wildcard +
' replacement strings.';
throw new Error(wildstring.replace(message, [ patternSubstrings.length - 1, pattern, strings.length ]));
} }
currentString = currentString.substr( var result = '';
currentString.indexOf(patternSubstrings[patternIndex]) + patternSubstrings[patternIndex].length
);
patternIndex++; for (var s = 0; s < strings.length; ++s) {
while (patternSubstrings[patternIndex] === '') { result += patternSubstrings[s] + strings[s];
patternIndex++;
} }
return result;
} }
if (patternIndex >= patternSubstrings.length &&
patternSubstrings[patternSubstrings.length - 1] !== '' &&
currentString.length > 0) {
// not ending with a wildcard, we need to backtrack
if (currentString === string) { // this string doesn't even match a little
return false;
}
return checkRollbackStrings(rollbackStrings, patternSubstrings);
}
return true;
}; };
/** if (typeof(module) !== 'undefined') { module.exports = wildstring; }
* Replace wildcards in a pattern with strings (string interpolation) if (typeof(angular) !== 'undefined') { angular.module('wildstring').factory = wildstring; }
* @memberof wildstring if (typeof(define) !== 'undefined') { define([], wildstring); }
* @param {string} pattern The start string, using wildcards as placeholders
* @param {string|string[]} strings The string or strings to replace the wildcards in the pattern.
* If you pass a single string, it will replace all the wildcards with the string.
* If you pass an array of strings, they will replace the wildcards in order from left to right.
* @throws The number of items in the strings array (if you pass an array) must match the number of wildcards in the pattern string.
* @throws You need to pass both parameters
* @throws You need to pass the right types
*/
wildstring.replace = function (pattern, strings) {
if (pattern === undefined || strings === undefined) {
throw new Error('wildstring.replace takes the pattern as one parameter and either a string or an array of strings as the second. You didn\'t pass enough parameters.');
}
if (typeof(strings) === typeof('')) {
return pattern.replace(wildstring.wildcard, strings);
}
if (!Array.isArray(strings) || typeof(pattern) !== typeof('')) {
throw new Error('wildstring.replace takes the pattern as one parameter and either a string or an array of strings as the second. Your parameter types are incorrect.');
}
if (pattern.indexOf(wildstring.wildcard) === -1) {
return pattern; // if there are no wildcards, just return the pattern
}
var patternSubstrings = pattern.split(wildstring.wildcard);
if (patternSubstrings.length - 1 !== strings.length) {
var message = 'There are a different number of wildcards than strings to replace them. You have ' +
wildstring.wildcard +' wildcards in "' + wildstring.wildcard + '" and ' + wildstring.wildcard +
' replacement strings.';
throw new Error(wildstring.replace(message, [ patternSubstrings.length - 1, pattern, strings.length ]));
}
var result = '';
for (var s = 0; s < strings.length; ++s) {
result += patternSubstrings[s] + strings[s];
}
return result;
};
return wildstring; return wildstring;
}));