package net.pterodactylus.sone.text;
+import static com.google.common.base.Optional.absent;
+import static com.google.common.base.Optional.of;
import static java.util.logging.Logger.getLogger;
import java.io.BufferedReader;
import java.io.Reader;
import java.io.StringReader;
import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.regex.Matcher;
import net.pterodactylus.sone.database.SoneProvider;
import com.google.common.base.Optional;
+import org.bitpedia.util.Base32;
import freenet.keys.FreenetURI;
+import freenet.support.Base64;
/**
* {@link Parser} implementation that can recognize Freenet URIs.
/** Pattern to detect whitespace. */
private static final Pattern whitespacePattern = Pattern.compile("[\\u000a\u0020\u00a0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u200c\u200d\u202f\u205f\u2060\u2800\u3000]");
+ private static class NextLink {
+
+ private final int position;
+ private final String link;
+ private final String remainder;
+ private final LinkType linkType;
+
+ private NextLink(int position, String link, String remainder, LinkType linkType) {
+ this.position = position;
+ this.link = link;
+ this.remainder = remainder;
+ this.linkType = linkType;
+ }
+
+ public int getPosition() {
+ return position;
+ }
+
+ public String getLink() {
+ return link;
+ }
+
+ public String getRemainder() {
+ return remainder;
+ }
+
+ public LinkType getLinkType() {
+ return linkType;
+ }
+
+ }
+
/**
* Enumeration for all recognized link types.
*
HTTP("http://", false),
HTTPS("https://", false),
SONE("sone://", false),
- POST("post://", false);
+ POST("post://", false),
+
+ FREEMAIL("", true) {
+ @Override
+ public Optional<NextLink> findNext(String line) {
+ int nextFreemailSuffix = line.indexOf(".freemail");
+ if (nextFreemailSuffix < 54) {
+ /* 52 chars for the id, 1 on @, at least 1 for the local part. */
+ return absent();
+ }
+ if (line.charAt(nextFreemailSuffix - 53) != '@') {
+ return absent();
+ }
+ if (!line.substring(nextFreemailSuffix - 52, nextFreemailSuffix).matches("^[a-z2-7]*$")) {
+ return absent();
+ }
+ int startOfLocalPart = nextFreemailSuffix - 54;
+ if (!isAllowedInLocalPart(line.charAt(startOfLocalPart))) {
+ return absent();
+ }
+ while ((startOfLocalPart > 0) && isAllowedInLocalPart(line.charAt(startOfLocalPart - 1))) {
+ startOfLocalPart--;
+ }
+ return of(new NextLink(startOfLocalPart, line.substring(startOfLocalPart, nextFreemailSuffix + 9), line.substring(nextFreemailSuffix + 9), this));
+ }
+
+ private boolean isAllowedInLocalPart(char character) {
+ return ((character >= 'A') && (character <= 'Z'))
+ || ((character >= 'a') && (character <= 'z'))
+ || ((character >= '0') && (character <= '9'))
+ || (character == '.') || (character == '-') || (character == '_');
+ }
+ };
private final String scheme;
private final boolean freenetLink;
return freenetLink;
}
+ public Optional<NextLink> findNext(String line) {
+ int nextLinkPosition = line.indexOf(getScheme());
+ if (nextLinkPosition == -1) {
+ return absent();
+ }
+ int endOfLink = findEndOfLink(line.substring(nextLinkPosition));
+ return of(new NextLink(nextLinkPosition, line.substring(nextLinkPosition, nextLinkPosition + endOfLink), line.substring(nextLinkPosition + endOfLink), this));
+ }
+
+ private static int findEndOfLink(String line) {
+ Matcher matcher = whitespacePattern.matcher(line);
+ int endOfLink = matcher.find() ? matcher.start() : line.length();
+ while (isPunctuation(line.charAt(endOfLink - 1))) {
+ endOfLink--;
+ }
+ int openParens = 0;
+ for (int i = 0; i < endOfLink; i++) {
+ switch (line.charAt(i)) {
+ case '(':
+ openParens++;
+ break;
+ case ')':
+ openParens--;
+ if (openParens < 0) {
+ return i;
+ }
+ default:
+ }
+ }
+ return endOfLink;
+ }
+
}
/** The Sone provider. */
@Nonnull
@Override
public Iterable<Part> parse(@Nonnull String source, @Nullable SoneTextParserContext context) {
- PartContainer parts = new PartContainer();
+ List<Part> parts = new ArrayList<>();
try (Reader sourceReader = new StringReader(source);
BufferedReader bufferedReader = new BufferedReader(sourceReader)) {
String line;
*/
boolean lineComplete = true;
while (line.length() > 0) {
- Optional<NextLink> nextLink = NextLink.findNextLink(line);
+ Optional<NextLink> nextLink = findNextLink(line);
if (!nextLink.isPresent()) {
if (lineComplete && !lastLineEmpty) {
parts.add(new PlainTextPart("\n" + line));
}
lineComplete = false;
- int endOfLink = findEndOfLink(line);
- String link = line.substring(0, endOfLink);
+ String link = nextLink.get().getLink();
logger.log(Level.FINER, String.format("Found link: %s", link));
/* if there is no text after the scheme, it’s not a link! */
case HTTPS:
renderHttpLink(parts, link, linkType);
break;
+ case FREEMAIL:
+ renderFreemailLink(parts, link);
}
- line = line.substring(endOfLink);
+ line = nextLink.get().getRemainder();
}
lastLineEmpty = false;
}
throw new RuntimeException(ioe1);
}
for (int partIndex = parts.size() - 1; partIndex >= 0; --partIndex) {
- Part part = parts.getPart(partIndex);
+ Part part = parts.get(partIndex);
if (!(part instanceof PlainTextPart) || !"\n".equals(part.getText())) {
break;
}
- parts.removePart(partIndex);
+ parts.remove(partIndex);
}
return parts;
}
- private void renderSoneLink(PartContainer parts, String line) {
+ public static Optional<NextLink> findNextLink(String line) {
+ int earliestLinkPosition = Integer.MAX_VALUE;
+ NextLink earliestNextLink = null;
+ for (LinkType possibleLinkType : LinkType.values()) {
+ Optional<NextLink> nextLink = possibleLinkType.findNext(line);
+ if (nextLink.isPresent()) {
+ if (nextLink.get().getPosition() < earliestLinkPosition) {
+ earliestNextLink = nextLink.get();
+ earliestLinkPosition = earliestNextLink.getPosition();
+ }
+ }
+ }
+ return Optional.fromNullable(earliestNextLink);
+ }
+
+ private void renderSoneLink(List<Part> parts, String line) {
if (line.length() >= (7 + 43)) {
String soneId = line.substring(7, 50);
Optional<Sone> sone = soneProvider.getSone(soneId);
}
}
- private void renderPostLink(PartContainer parts, String line) {
+ private void renderPostLink(List<Part> parts, String line) {
if (line.length() >= (7 + 36)) {
String postId = line.substring(7, 43);
Optional<Post> post = postProvider.getPost(postId);
}
}
- private void renderFreenetLink(PartContainer parts, String link, LinkType linkType, @Nullable SoneTextParserContext context) {
+ private void renderFreenetLink(List<Part> parts, String link, LinkType linkType, @Nullable SoneTextParserContext context) {
String name = link;
+ String linkWithoutParameters = link;
if (name.indexOf('?') > -1) {
- name = name.substring(0, name.indexOf('?'));
+ linkWithoutParameters = name = name.substring(0, name.indexOf('?'));
}
if (name.endsWith("/")) {
name = name.substring(0, name.length() - 1);
name = link.substring(0, Math.min(9, link.length()));
}
boolean fromPostingSone = ((linkType == LinkType.SSK) || (linkType == LinkType.USK)) && (context != null) && (context.getPostingSone() != null) && link.substring(4, Math.min(link.length(), 47)).equals(context.getPostingSone().getId());
- parts.add(new FreenetLinkPart(link, name, fromPostingSone));
+ parts.add(new FreenetLinkPart(link, name, linkWithoutParameters, fromPostingSone));
} catch (MalformedURLException mue1) {
/* not a valid link, insert as plain text. */
parts.add(new PlainTextPart(link));
}
}
- private void renderHttpLink(PartContainer parts, String link, LinkType linkType) {
- String name;
- name = link.substring(linkType == LinkType.HTTP ? 7 : 8);
+ private void renderHttpLink(List<Part> parts, String link, LinkType linkType) {
+ String name = link.substring(linkType == LinkType.HTTP ? 7 : 8);
int firstSlash = name.indexOf('/');
int lastSlash = name.lastIndexOf('/');
if ((lastSlash - firstSlash) > 3) {
parts.add(new LinkPart(link, name));
}
- private int findEndOfLink(String line) {
- Matcher matcher = whitespacePattern.matcher(line);
- int endOfLink = matcher.find() ? matcher.start() : line.length();
- while ((endOfLink > 0) && isPunctuation(line.charAt(endOfLink - 1))) {
- endOfLink--;
- }
- int openParens = 0;
- for (int i = 0; i < endOfLink; i++) {
- switch (line.charAt(i)) {
- case '(':
- openParens++;
- break;
- case ')':
- openParens--;
- if (openParens < 0) {
- return i;
- }
- default:
- }
- }
- return endOfLink;
+ private void renderFreemailLink(List<Part> parts, String line) {
+ int separator = line.indexOf('@');
+ String freemailId = line.substring(separator + 1, separator + 53);
+ String identityId = Base64.encode(Base32.decode(freemailId));
+ String emailLocalPart = line.substring(0, separator);
+ parts.add(new FreemailPart(emailLocalPart, freemailId, identityId));
}
private static boolean isPunctuation(char character) {
- return (character == '.') || (character == ',');
- }
-
- private static class NextLink {
-
- private final int position;
- private final LinkType linkType;
-
- private NextLink(int position, LinkType linkType) {
- this.position = position;
- this.linkType = linkType;
- }
-
- public int getPosition() {
- return position;
- }
-
- public LinkType getLinkType() {
- return linkType;
- }
-
- public static Optional<NextLink> findNextLink(String line) {
- int earliestLinkPosition = Integer.MAX_VALUE;
- LinkType linkType = null;
- for (LinkType possibleLinkType : LinkType.values()) {
- int nextLinkPosition = line.indexOf(possibleLinkType.getScheme());
- if (nextLinkPosition > -1) {
- if (nextLinkPosition < earliestLinkPosition) {
- earliestLinkPosition = nextLinkPosition;
- linkType = possibleLinkType;
- }
- }
- }
- return earliestLinkPosition < Integer.MAX_VALUE ?
- Optional.of(new NextLink(earliestLinkPosition, linkType)) : Optional.<NextLink>absent();
- }
-
+ return (character == '.') || (character == ',') || (character == '!') || (character == '?');
}
}
projects / Sone.git / blobdiff