46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
/**
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* IDs usage:
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*
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* id="{id}"
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* xlink:href="#{id}"
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* url(#{id})
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*
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* From SVG animations:
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*
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* begin="0;{id}.end"
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* begin="{id}.end"
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* begin="{id}.click"
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*/
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/**
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* Regular expression for finding ids
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*/
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const regex = /\sid="(\S+)"/g;
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/**
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* New random-ish prefix for ids
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*
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* Do not use dash, it cannot be used in SVG 2 animations
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*/
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const randomPrefix = "IconifyId" + Date.now().toString(16) + (Math.random() * 16777216 | 0).toString(16);
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/**
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* Counter for ids, increasing with every replacement
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*/
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let counter = 0;
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/**
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* Replace IDs in SVG output with unique IDs
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*/
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function replaceIDs(body, prefix = randomPrefix) {
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const ids = [];
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let match;
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while (match = regex.exec(body)) ids.push(match[1]);
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if (!ids.length) return body;
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const suffix = "suffix" + (Math.random() * 16777216 | Date.now()).toString(16);
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ids.forEach((id) => {
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const newID = typeof prefix === "function" ? prefix(id) : prefix + (counter++).toString();
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const escapedID = id.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
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body = body.replace(new RegExp("([#;\"])(" + escapedID + ")([\")]|\\.[a-z])", "g"), "$1" + newID + suffix + "$3");
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});
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body = body.replace(new RegExp(suffix, "g"), "");
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return body;
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}
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export { replaceIDs }; |