svgtourl.sass

//  Function to create an optimized svg url
//  Version: 1.0.0
@function svg-url($svg){
    //
    //  Add missing namespace
    //
    @if not str-index($svg,xmlns) {
        $svg: str-replace($svg, '<svg','<svg xmlns="http://www.w3.org/2000/svg"');   
    }        
    //    
    //  Chunk up string in order to avoid 
    //  "stack level too deep" error
    //     
    $encoded:'';
    $slice: 2000;
    $index: 0;
    $loops: ceil(str-length($svg)/$slice);
    @for $i from 1 through $loops {
        $chunk: str-slice($svg, $index, $index + $slice - 1); 
        //
        //   Encode 
        //
        $chunk: str-replace($chunk, '%', '%25');
        $chunk: str-replace($chunk, '"', '%22');
        $chunk: str-replace($chunk, "'", '%27');
        $chunk: str-replace($chunk, '&', '%26');
        $chunk: str-replace($chunk, '#', '%23');       
        $chunk: str-replace($chunk, '{', '%7B');
        $chunk: str-replace($chunk, '}', '%7D');         
        $chunk: str-replace($chunk, '<', '%3C');
        $chunk: str-replace($chunk, '>', '%3E');     
        
        $encoded: #{$encoded}#{$chunk};
        $index: $index + $slice; 
    }
    @return url("data:image/svg+xml,#{$encoded}");   
}
        
//  Background svg mixin          
@mixin background-svg($svg){
    background-image: svg-url($svg);        
}        
            
//  Helper function to replace characters in a string
@function str-replace($string, $search, $replace: '') {
    $index: str-index($string, $search); 
    @return if($index, 
        str-slice($string, 1, $index - 1) + $replace + 
        str-replace(str-slice($string, $index + 
        str-length($search)), $search, $replace), 
        $string); 
}