fs=require("fs")

class FileChunker {
    constructor(fname) {
	this.Chunks=[];
	let Template=fs.readFileSync(fname).toString();
	let pattern="<!-- INJECT -->";
	let offset=0;
	do {
	    let nextOffset=Template.indexOf(pattern,offset);
	    if (nextOffset>=0) {
		this.Chunks.push(Template.substring(offset,nextOffset));
		offset=nextOffset+pattern.length;
	    }
	    else {
		this.Chunks.push(Template.substring(offset));
		offset=-1;
	    }
	} while (offset>0);
    }
}

module.exports=FileChunker;