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import svgpath from 'svgpath'
import svgParse from 'parse-svg-path'
import glob from 'glob'
import fs from 'fs'
import { basename } from 'path'
const addFloats = (n1, n2) => {
return Math.round((parseFloat(n1) + parseFloat(n2)) * 1000) / 1000
}
const optimizePath = (path) => {
let transformed = svgpath(path)
.rel()
.round(3)
.toString()
return svgParse(transformed).map(function (a) {
return a.join(' ')
}).join(' ')
}
const optimizeIcons = (path) => {
glob(path, {}, function(er, files) {
files.forEach(function(file) {
let svgFile = fs.readFileSync(file),
svgFileContent = svgFile.toString()
svgFileContent = svgFileContent.replace(/><\/(polyline|line|rect|circle|path)>/g, '/>').
replace(/rx="([^"]+)"\s+ry="\1"/g, 'rx="$1"').
replace(/\s?\/>/g, ' />').
replace(/\n\s*<(line|circle|path|polyline|rect)/g, "\n <$1").
replace(/polyline points="([0-9.]+)\s([0-9.]+)\s([0-9.]+)\s([0-9.]+)"/g, 'line x1="$1" y1="$2" x2="$3" y2="$4"').
replace(/<path d="([^"]+)"/g, function(f, r1) {
r1 = optimizePath(r1)
return `<path d="${r1}"`
}).
replace(/d="m/g, 'd="M').
replace(/([Aa])\s?([0-9.]+)\s([0-9.]+)\s([0-9.]+)\s?([0-1])\s?([0-1])\s?(-?[0-9.]+)\s?(-?[0-9.]+)/gi, '$1$2 $3 $4 $5 $6 $7 $8').
replace(/\n\n+/g, "\n").
replace(/<path d="M([0-9.]*) ([0-9.]*)l\s?([-0-9.]*) ([-0-9.]*)"/g, function(f, r1, r2, r3, r4) {
return `<line x1="${r1}" y1="${r2}" x2="${addFloats(r1, r3)}" y2="${addFloats(r2, r4)}"`
}).
replace(/<path d="M([0-9.]*) ([0-9.]*)v\s?([-0-9.]*)"/g, function(f, r1, r2, r3) {
return `<line x1="${r1}" y1="${r2}" x2="${r1}" y2="${addFloats(r2, r3)}"`
}).
replace(/<path d="M([0-9.]*) ([0-9.]*)h\s?([-0-9.]*)"/g, function(f, r1, r2, r3) {
return `<line x1="${r1}" y1="${r2}" x2="${addFloats(r1, r3)}" y2="${r2}"`
}).
replace(/<path d="([^"]+)"/g, function(f, r1) {
r1 = r1.replace(/ -0\./g, " -.").replace(/ 0\./g, " .").replace(/\s([a-z])/gi, "$1").replace(/([a-z])\s/gi, "$1")
return `<path d="${r1}"`
})
if (svgFile.toString() !== svgFileContent) {
console.log(`Optimize icon "${basename(file)}"`);
fs.writeFileSync(file, svgFileContent)
}
})
})
}
optimizeIcons("src/_icons/*.svg")
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