removeAttrs.js
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'use strict';
var DEFAULT_SEPARATOR = ':';
exports.type = 'perItem';
exports.active = false;
exports.description = 'removes specified attributes';
exports.params = {
elemSeparator: DEFAULT_SEPARATOR,
preserveCurrentColor: false,
attrs: []
};
/**
* Remove attributes
*
* @param elemSeparator
* format: string
*
* @param preserveCurrentColor
* format: boolean
*
* @param attrs:
*
* format: [ element* : attribute* : value* ]
*
* element : regexp (wrapped into ^...$), single * or omitted > all elements (must be present when value is used)
* attribute : regexp (wrapped into ^...$)
* value : regexp (wrapped into ^...$), single * or omitted > all values
*
* examples:
*
* > basic: remove fill attribute
* ---
* removeAttrs:
* attrs: 'fill'
*
* > remove fill attribute on path element
* ---
* attrs: 'path:fill'
*
* > remove fill attribute on path element where value is none
* ---
* attrs: 'path:fill:none'
*
*
* > remove all fill and stroke attribute
* ---
* attrs:
* - 'fill'
* - 'stroke'
*
* [is same as]
*
* attrs: '(fill|stroke)'
*
* [is same as]
*
* attrs: '*:(fill|stroke)'
*
* [is same as]
*
* attrs: '.*:(fill|stroke)'
*
* [is same as]
*
* attrs: '.*:(fill|stroke):.*'
*
*
* > remove all stroke related attributes
* ----
* attrs: 'stroke.*'
*
*
* @param {Object} item current iteration item
* @param {Object} params plugin params
* @return {Boolean} if false, item will be filtered out
*
* @author Benny Schudel
*/
exports.fn = function(item, params) {
// wrap into an array if params is not
if (!Array.isArray(params.attrs)) {
params.attrs = [params.attrs];
}
if (item.isElem()) {
var elemSeparator = typeof params.elemSeparator == 'string' ? params.elemSeparator : DEFAULT_SEPARATOR;
var preserveCurrentColor = typeof params.preserveCurrentColor == 'boolean' ? params.preserveCurrentColor : false;
// prepare patterns
var patterns = params.attrs.map(function(pattern) {
// if no element separators (:), assume it's attribute name, and apply to all elements *regardless of value*
if (pattern.indexOf(elemSeparator) === -1) {
pattern = ['.*', elemSeparator, pattern, elemSeparator, '.*'].join('');
// if only 1 separator, assume it's element and attribute name, and apply regardless of attribute value
} else if (pattern.split(elemSeparator).length < 3) {
pattern = [pattern, elemSeparator, '.*'].join('');
}
// create regexps for element, attribute name, and attribute value
return pattern.split(elemSeparator)
.map(function(value) {
// adjust single * to match anything
if (value === '*') { value = '.*'; }
return new RegExp(['^', value, '$'].join(''), 'i');
});
});
// loop patterns
patterns.forEach(function(pattern) {
// matches element
if (pattern[0].test(item.elem)) {
// loop attributes
item.eachAttr(function(attr) {
var name = attr.name;
var value = attr.value;
var isFillCurrentColor = preserveCurrentColor && name == 'fill' && value == 'currentColor';
var isStrokeCurrentColor = preserveCurrentColor && name == 'stroke' && value == 'currentColor';
if (!(isFillCurrentColor || isStrokeCurrentColor)) {
// matches attribute name
if (pattern[1].test(name)) {
// matches attribute value
if (pattern[2].test(attr.value)) {
item.removeAttr(name);
}
}
}
});
}
});
}
};