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391a73c | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 | import * as P from '@react-pdf/primitives';
const XML_ENTITY_MAP = {
amp: '&',
lt: '<',
gt: '>',
quot: '"',
apos: "'",
};
const ENTITY_REGEX = /&(amp|lt|gt|quot|apos);/g;
const ATTR_REGEX = /([a-zA-Z][a-zA-Z0-9_:-]*)\s*=\s*(?:"([^"]*)"|'([^']*)')/g;
function decodeXmlEntities(str) {
return str.replace(ENTITY_REGEX, (_, key) => XML_ENTITY_MAP[key]);
}
function parseAttributes(attrString) {
const attrs = {};
ATTR_REGEX.lastIndex = 0;
let match;
while ((match = ATTR_REGEX.exec(attrString)) !== null) {
attrs[match[1]] = decodeXmlEntities(match[2] ?? match[3]);
}
return attrs;
}
function tokenize(xmlString) {
const str = xmlString.replace(/<\?xml[^?]*\?>|<!DOCTYPE[^>]*>|<!--[\s\S]*?-->/gi, '');
const tokens = [];
let pos = 0;
while (pos < str.length) {
const nextTag = str.indexOf('<', pos);
if (nextTag === -1)
break;
// Text content between tags
if (nextTag > pos) {
const raw = str.slice(pos, nextTag);
if (/\S/.test(raw)) {
tokens.push({ type: 'text', text: decodeXmlEntities(raw) });
}
}
// CDATA section
if (str.startsWith('<![CDATA[', nextTag)) {
const cdataEnd = str.indexOf(']]>', nextTag + 9);
if (cdataEnd === -1)
break;
const text = str.slice(nextTag + 9, cdataEnd);
if (text) {
tokens.push({ type: 'text', text });
}
pos = cdataEnd + 3;
continue;
}
const tagEnd = str.indexOf('>', nextTag);
if (tagEnd === -1)
break;
const tagContent = str.slice(nextTag + 1, tagEnd);
pos = tagEnd + 1;
// Closing tag
if (tagContent.startsWith('/')) {
tokens.push({ type: 'close', tagName: tagContent.slice(1).trim() });
continue;
}
// Opening or self-closing tag
const isSelfClosing = tagContent.endsWith('/');
const rawTag = isSelfClosing ? tagContent.slice(0, -1) : tagContent;
const spaceIndex = rawTag.search(/[\s/]/);
const tagName = spaceIndex === -1 ? rawTag.trim() : rawTag.slice(0, spaceIndex).trim();
const attrString = spaceIndex === -1 ? '' : rawTag.slice(spaceIndex);
tokens.push({
type: isSelfClosing ? 'self-close' : 'open',
tagName,
attributes: parseAttributes(attrString),
});
}
return tokens;
}
const CAMEL_CASE_REGEX = /[-:]([a-z])/g;
const TAG_NAME_MAP = {
svg: P.Svg,
g: P.G,
path: P.Path,
rect: P.Rect,
circle: P.Circle,
ellipse: P.Ellipse,
line: P.Line,
polyline: P.Polyline,
polygon: P.Polygon,
text: P.Text,
tspan: P.Tspan,
defs: P.Defs,
clippath: P.ClipPath,
lineargradient: P.LinearGradient,
radialgradient: P.RadialGradient,
marker: P.Marker,
stop: P.Stop,
image: P.Image,
};
const SKIP_ELEMENTS = new Set([
'script',
'foreignobject',
'filter',
'mask',
'pattern',
'use',
'symbol',
'animate',
'animatetransform',
'animatemotion',
'set',
]);
const TEXT_TYPES = new Set([P.Text, P.Tspan]);
function toCamelCase(str) {
return str.replace(CAMEL_CASE_REGEX, (_, letter) => letter.toUpperCase());
}
function parseStyleAttribute(styleString) {
if (!styleString)
return {};
const result = {};
for (const declaration of styleString.split(';')) {
const colonIndex = declaration.indexOf(':');
if (colonIndex === -1)
continue;
const property = declaration.slice(0, colonIndex).trim();
const value = declaration.slice(colonIndex + 1).trim();
if (property && value) {
result[toCamelCase(property)] = value;
}
}
return result;
}
function convertAttributes(attributes) {
const props = {};
for (const [name, value] of Object.entries(attributes)) {
if (name === 'style') {
Object.assign(props, parseStyleAttribute(value));
}
else {
props[toCamelCase(name)] = value;
}
}
return props;
}
function buildTree(tokens) {
const stack = [];
const tagNames = [];
let root = null;
let skipDepth = 0;
for (const token of tokens) {
if (token.type === 'text') {
if (skipDepth || stack.length === 0)
continue;
const parent = stack[stack.length - 1];
if (!TEXT_TYPES.has(parent.type))
continue;
const text = token.text.trim();
if (text) {
parent.children.push({
type: P.TextInstance,
props: {},
value: text,
});
}
continue;
}
if (token.type === 'close') {
if (skipDepth) {
skipDepth--;
}
else if (stack.length > 1) {
if (tagNames[tagNames.length - 1] === token.tagName) {
tagNames.pop();
stack.pop();
}
}
continue;
}
// open or self-close
if (skipDepth) {
if (token.type === 'open')
skipDepth++;
continue;
}
const lowerTag = token.tagName.toLowerCase();
if (SKIP_ELEMENTS.has(lowerTag)) {
console.warn(`Unsupported SVG element: <${lowerTag}> will be skipped`);
if (token.type === 'open')
skipDepth = 1;
continue;
}
const mappedType = TAG_NAME_MAP[lowerTag];
if (!mappedType) {
if (token.type === 'open')
skipDepth = 1;
continue;
}
const node = {
type: mappedType,
props: convertAttributes(token.attributes),
children: [],
};
if (stack.length > 0) {
stack[stack.length - 1].children.push(node);
}
if (!root)
root = node;
if (token.type === 'open') {
tagNames.push(token.tagName);
stack.push(node);
}
}
return root;
}
const EMPTY_SVG = { type: P.Svg, props: {}, children: [] };
function parseSvg(svgString) {
const tokens = tokenize(svgString);
const root = buildTree(tokens);
if (!root) {
console.warn('SVG parse error: failed to parse XML');
return EMPTY_SVG;
}
return root;
}
export { parseSvg };
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