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February 9, 2017 09:13
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Utils svg
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/*********************** svg utils ************************/ | |
// | |
// Function to create an optimized svg url | |
// Version: 1.0.6 | |
@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, '"', '\''); | |
$chunk: str-replace($chunk, '%', '%25'); | |
$chunk: str-replace($chunk, '#', '%23'); | |
$chunk: str-replace($chunk, '{', '%7B'); | |
$chunk: str-replace($chunk, '}', '%7D'); | |
$chunk: str-replace($chunk, '<', '%3C'); | |
$chunk: str-replace($chunk, '>', '%3E'); | |
// | |
// The maybe list | |
// | |
// Keep size and compile time down | |
// ... only add on documented fail | |
// | |
// $chunk: str-replace($chunk, '&', '%26'); | |
// $chunk: str-replace($chunk, '|', '%7C'); | |
// $chunk: str-replace($chunk, '[', '%5B'); | |
// $chunk: str-replace($chunk, ']', '%5D'); | |
// $chunk: str-replace($chunk, '^', '%5E'); | |
// $chunk: str-replace($chunk, '`', '%60'); | |
// $chunk: str-replace($chunk, ';', '%3B'); | |
// $chunk: str-replace($chunk, '?', '%3F'); | |
// $chunk: str-replace($chunk, ':', '%3A'); | |
// $chunk: str-replace($chunk, '@', '%40'); | |
// $chunk: str-replace($chunk, '=', '%3D'); | |
$encoded: #{$encoded}#{$chunk}; | |
$index: $index + $slice; | |
} | |
@return url("data:image/svg+xml,#{$encoded}"); | |
} | |
// 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); | |
} |
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