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Refactored 'site:' query modifier parsing into a dedicated function.

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This commit is contained in:
luccioman
2017-12-04 13:58:15 +01:00
parent c5c3cc1274
commit 867388e05b
1 changed files with 39 additions and 23 deletions

62
source/net/yacy/search/query/QueryModifier.java

@ -36,7 +36,9 @@ import net.yacy.kelondro.util.ISO639;
import net.yacy.search.schema.CollectionSchema;
import net.yacy.server.serverObjects;
/**
* Handle search query modifiers
*/
public class QueryModifier {
private final StringBuilder modifier;
@ -103,28 +105,7 @@ public class QueryModifier {
querystring = filetypeParser(querystring, "filetype:");
// parse site
final int sp = querystring.indexOf("site:", 0);
if (sp >= 0) {
int ftb = querystring.indexOf(' ', sp);
if ( ftb == -1 ) {
ftb = querystring.length();
}
this.sitehost = querystring.substring(sp + 5, ftb);
querystring = querystring.replace("site:" + this.sitehost, "");
while ( this.sitehost.length() > 0 && this.sitehost.charAt(0) == '.' ) {
this.sitehost = this.sitehost.substring(1);
}
while ( sitehost.endsWith(".") ) {
this.sitehost = this.sitehost.substring(0, this.sitehost.length() - 1);
}
try {
this.sitehash = DigestURL.hosthash(this.sitehost, this.sitehost.startsWith("ftp.") ? 21 : 80);
} catch (MalformedURLException e) {
this.sitehash = "";
ConcurrentLog.logException(e);
}
add("site:" + this.sitehost);
}
querystring = parseSiteModifier(querystring);
// parse author
final int authori = querystring.indexOf("author:", 0);
@ -244,6 +225,41 @@ public class QueryModifier {
return querystring;
}
/**
* Parses the query string for any eventual site modifier (site:), and fill the
* {@link #sitehost} and {@link #sitehash} attributes accordingly.
*
* @param querystring
* the query string. Must not be null.
* @return the query string with site operator removed
*/
protected String parseSiteModifier(String querystring) {
final String modifierPrefix = "site:";
final int sp = querystring.indexOf(modifierPrefix, 0);
if (sp >= 0) {
int ftb = querystring.indexOf(' ', sp);
if ( ftb == -1 ) {
ftb = querystring.length();
}
this.sitehost = querystring.substring(sp + modifierPrefix.length(), ftb);
querystring = querystring.replace(modifierPrefix + this.sitehost, "");
while ( this.sitehost.length() > 0 && this.sitehost.charAt(0) == '.' ) {
this.sitehost = this.sitehost.substring(1);
}
while ( sitehost.endsWith(".") ) {
this.sitehost = this.sitehost.substring(0, this.sitehost.length() - 1);
}
try {
this.sitehash = DigestURL.hosthash(this.sitehost, this.sitehost.startsWith("ftp.") ? 21 : 80);
} catch (MalformedURLException e) {
this.sitehash = "";
ConcurrentLog.logException(e);
}
add(modifierPrefix + this.sitehost);
}
return querystring;
}
public void add(String m) {
if (modifier.length() > 0 && modifier.charAt(modifier.length() - 1) != ' ' && m != null && m.length() > 0) modifier.append(' ');
if (m != null) modifier.append(m);