/**
* Parsing method for metafile headers, saving each value into separate variable.
*
* @param s String containing metafile
* @return Boolean value notifying whether header ended or not (true = end of header)
*/
private boolean parseHeader(String s) {
String subs;
int colonIndex;
if (s.equals("")) {
// timto prazdnym radkem skoncil header, muzeme prestat cist
return true;
}
colonIndex = s.indexOf(":");
subs = s.substring(0, colonIndex);
if (subs.equalsIgnoreCase("zsync")) {
headers.version = s.substring(colonIndex + 2);
// zkontrolujeme kompatibilitu
if (headers.version.equals("0.0.4") || headers.version.equals("0.0.2")) {
throw new RuntimeException(
"This version is not compatible with zsync streams in versions up to 0.0.4");
}
} else if (subs.equalsIgnoreCase("Blocksize")) {
headers.blocksize = Integer.parseInt(s.substring(colonIndex + 2));
} else if (subs.equalsIgnoreCase("Length")) {
headers.length = Long.parseLong(s.substring(colonIndex + 2));
} else if (subs.equalsIgnoreCase("Hash-Lengths")) {
int comma = s.indexOf(",");
int seqNum = Integer.parseInt(s.substring((colonIndex + 2), comma));
headers.setSeqNum(seqNum);
int nextComma = s.indexOf(",", comma + 1);
headers.setRsumBytes(Integer.parseInt(s.substring(comma + 1, nextComma)));
headers.setChecksumBytes(Integer.parseInt(s.substring(nextComma + 1)));
if ((headers.getSeqNum() < 1 || headers.getSeqNum() > 2)
|| (headers.getRsumButes() < 1 || headers.getRsumButes() > 4)
|| (headers.getChecksumBytes() < 3 || headers.getChecksumBytes() > 16)) {
throw new RuntimeException("Nonsensical hash lengths line " + s.substring(colonIndex + 2));
}
} else if (subs.equalsIgnoreCase("URL")) {
headers.url = s.substring(colonIndex + 2);
} else if (subs.equalsIgnoreCase("Z-URL")) {
// not implemented yet
} else if (subs.equalsIgnoreCase("SHA-1")) {
headers.sha1 = s.substring(colonIndex + 2);
} else if (subs.equalsIgnoreCase("Z-Map2")) {
// not implemented yet
}
return false;
}
