cdk-amazon-chime-resources
Version:
118 lines (116 loc) • 4.06 kB
JavaScript
//TODO: handle comments
function readDocType(xmlData, i){
const entities = {};
if( xmlData[i + 3] === 'O' &&
xmlData[i + 4] === 'C' &&
xmlData[i + 5] === 'T' &&
xmlData[i + 6] === 'Y' &&
xmlData[i + 7] === 'P' &&
xmlData[i + 8] === 'E')
{
i = i+9;
let angleBracketsCount = 1;
let hasBody = false, entity = false, comment = false;
let exp = "";
for(;i<xmlData.length;i++){
if (xmlData[i] === '<' && !comment) {
if( hasBody &&
xmlData[i+1] === '!' &&
xmlData[i+2] === 'E' &&
xmlData[i+3] === 'N' &&
xmlData[i+4] === 'T' &&
xmlData[i+5] === 'I' &&
xmlData[i+6] === 'T' &&
xmlData[i+7] === 'Y'
){
i += 7;
entity = true;
}else if( hasBody &&
xmlData[i+1] === '!' &&
xmlData[i+2] === 'E' &&
xmlData[i+3] === 'L' &&
xmlData[i+4] === 'E' &&
xmlData[i+5] === 'M' &&
xmlData[i+6] === 'E' &&
xmlData[i+7] === 'N' &&
xmlData[i+8] === 'T'
){
//Not supported
i += 8;
}else if( hasBody &&
xmlData[i+1] === '!' &&
xmlData[i+2] === 'A' &&
xmlData[i+3] === 'T' &&
xmlData[i+4] === 'T' &&
xmlData[i+5] === 'L' &&
xmlData[i+6] === 'I' &&
xmlData[i+7] === 'S' &&
xmlData[i+8] === 'T'
){
//Not supported
i += 8;
}else if( hasBody &&
xmlData[i+1] === '!' &&
xmlData[i+2] === 'N' &&
xmlData[i+3] === 'O' &&
xmlData[i+4] === 'T' &&
xmlData[i+5] === 'A' &&
xmlData[i+6] === 'T' &&
xmlData[i+7] === 'I' &&
xmlData[i+8] === 'O' &&
xmlData[i+9] === 'N'
){
//Not supported
i += 9;
}else if( //comment
xmlData[i+1] === '!' &&
xmlData[i+2] === '-' &&
xmlData[i+3] === '-'
){
comment = true;
}else{
throw new Error("Invalid DOCTYPE");
}
angleBracketsCount++;
exp = "";
} else if (xmlData[i] === '>') {
if(comment){
if( xmlData[i - 1] === "-" && xmlData[i - 2] === "-"){
comment = false;
angleBracketsCount--;
}
}else{
if(entity) {
parseEntityExp(exp, entities);
entity = false;
}
angleBracketsCount--;
}
if (angleBracketsCount === 0) {
break;
}
}else if( xmlData[i] === '['){
hasBody = true;
}else{
exp += xmlData[i];
}
}
if(angleBracketsCount !== 0){
throw new Error(`Unclosed DOCTYPE`);
}
}else{
throw new Error(`Invalid Tag instead of DOCTYPE`);
}
return {entities, i};
}
const entityRegex = RegExp("^\\s([a-zA-z0-0]+)[ \t](['\"])([^&]+)\\2");
function parseEntityExp(exp, entities){
const match = entityRegex.exec(exp);
if(match){
entities[ match[1] ] = {
regx : RegExp( `&${match[1]};`,"g"),
val: match[3]
};
}
}
module.exports = readDocType;