More diff page improvements

Tom

2014-10-28 f0ebfe6152959fda74bf7a5436bd765a0a231f6b

More diff page improvements

- Use git object ids as fragments and HTML element ids
- Simplify generation: don't parse the diff line, instead generate
  the table header from the DiffEntry when we process it, and just
  skip the diff lines.

 src/main/java/com/gitblit/utils/GitBlitDiffFormatter.java

@@ -20,8 +20,8 @@

import java.io.IOException;
import java.text.MessageFormat;
import java.util.HashMap;
import java.util.Map;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

@@ -119,8 +119,8 @@
    private int truncateTo;
    /** Whether we decided to truncate the commitdiff. */
    private boolean truncated;
    /** If {@link #truncated}, contains all files skipped,possibly with a suffix message as value to be displayed. */
    private final Map<String, String> skipped = new HashMap<String, String>();
    /** If {@link #truncated}, contains all entries skipped. */
    private final List<DiffEntry> skipped = new ArrayList<DiffEntry>();

    public GitBlitDiffFormatter(String commitId, String path) {
        super(new ResettableByteArrayOutputStream());
@@ -195,15 +195,30 @@
        } else {
            isOff = true;
        }
        if (isOff) {
            if (ent.getChangeType().equals(ChangeType.DELETE)) {
                skipped.put(ent.getOldPath(), getMsg("gb.diffDeletedFileSkipped", "(deleted file)"));
        if (truncated) {
            skipped.add(ent);
            } else {
                skipped.put(ent.getNewPath(), null);
            // Produce a header here and now
            String path;
            String id;
            if (ChangeType.DELETE.equals(ent.getChangeType())) {
                path = ent.getOldPath();
                id = ent.getOldId().name();
            } else {
                path = ent.getNewPath();
                id = ent.getNewId().name();
            }
            StringBuilder sb = new StringBuilder(MessageFormat.format("<div class='header'><div class=\"diffHeader\" id=\"n{0}\"><i class=\"icon-file\"></i> ", id));
            sb.append(StringUtils.escapeForHtml(path, false)).append("</div></div>");
            sb.append("<div class=\"diff\"><table><tbody>\n");
            os.write(sb.toString().getBytes());
        }
        // Keep formatting, but if off, don't produce anything anymore. We just keep on counting.
        super.format(ent);
        if (!truncated) {
            // Close the table
            os.write("</tbody></table></div><br />\n".getBytes());
        }
    }

    @Override
@@ -412,8 +427,6 @@
        String html = RawParseUtils.decode(os.toByteArray());
        String[] lines = html.split("\n");
        StringBuilder sb = new StringBuilder();
        boolean inFile = false;
        String oldnull = "a/dev/null";
        for (String line : lines) {
            if (line.startsWith("index")) {
                // skip index lines
@@ -424,35 +437,7 @@
            } else if (line.startsWith("---") || line.startsWith("+++")) {
                // skip --- +++ lines
            } else if (line.startsWith("diff")) {
                line = StringUtils.convertOctal(line);
                if (line.indexOf(oldnull) > -1) {
                    // a is null, use b
                    line = line.substring(("diff --git " + oldnull).length()).trim();
                    // trim b/
                    line = line.substring(2).trim();
                } else {
                    // use a
                    line = line.substring("diff --git ".length()).trim();
                    line = line.substring(line.startsWith("\"a/") ? 3 : 2);
                    line = line.substring(0, line.indexOf(" b/") > -1 ? line.indexOf(" b/") : line.indexOf("\"b/")).trim();
                }

                if (line.charAt(0) == '"') {
                    line = line.substring(1);
                }
                if (line.charAt(line.length() - 1) == '"') {
                    line = line.substring(0, line.length() - 1);
                }
                if (inFile) {
                    sb.append("</tbody></table></div>\n");
                    inFile = false;
                }
                line = StringUtils.escapeForHtml(line, false);
                sb.append(MessageFormat.format("<div class='header'><div class=\"diffHeader\" id=\"{0}\"><i class=\"icon-file\"></i> ", line)).append(line)
                        .append("</div></div>");
                sb.append("<div class=\"diff\">");
                sb.append("<table><tbody>");
                inFile = true;
                // skip diff lines
            } else {
                boolean gitLinkDiff = line.length() > 0 && line.substring(1).startsWith("Subproject commit");
                if (gitLinkDiff) {
@@ -470,26 +455,25 @@
                }
            }
        }
        sb.append("</tbody></table></div>");
        if (truncated) {
            sb.append(MessageFormat.format("<div class='header'><div class='diffHeader'>{0}</div></div>",
                    StringUtils.escapeForHtml(getMsg("gb.diffTruncated", "Diff truncated after the above file"), false)));
            // List all files not shown. We can be sure we do have at least one path in skipped.
            sb.append("<div class='diff'><table><tbody><tr><td class='diff-cell' colspan='4'>");
            String deletedSuffix = StringUtils.escapeForHtml(getMsg("gb.diffDeletedFileSkipped", "(deleted)"), false);
            boolean first = true;
            for (Map.Entry<String, String> s : skipped.entrySet()) {
            for (DiffEntry entry : skipped) {
                if (!first) {
                    sb.append('\n');
                }
                String path = StringUtils.escapeForHtml(s.getKey(), false);
                String comment = s.getValue();
                if (comment != null) {
                    sb.append("<span id=\"" + path + "\">" + path + ' ' + StringUtils.escapeForHtml(comment, false) + "</span>");
                if (ChangeType.DELETE.equals(entry.getChangeType())) {
                    sb.append("<span id=\"n" + entry.getOldId().name() + "\">" + StringUtils.escapeForHtml(entry.getOldPath(), false) + ' ' + deletedSuffix + "</span>");
                } else {
                    sb.append("<span id=\"" + path + "\">" + path + "</span>");
                    sb.append("<span id=\"n" + entry.getNewId().name() + "\">" + StringUtils.escapeForHtml(entry.getNewPath(), false) + "</span>");
                }
                first = false;
            }
            skipped.clear();
            sb.append("</td></tr></tbody></table></div>");
        }
        return sb.toString();

 src/main/java/com/gitblit/wicket/GitBlitWebApp.properties

@@ -750,7 +750,7 @@
gb.sortHighestSeverity = highest severity
gb.sortLowestSeverity = lowest severity
gb.missingIntegrationBranchMore = The target integration branch does not exist in the repository!
gb.diffDeletedFileSkipped = (deleted file)
gb.diffDeletedFileSkipped = (deleted)
gb.diffFileDiffTooLarge = Diff too large
gb.diffNewFile = New file
gb.diffDeletedFile = File was deleted

 src/main/java/com/gitblit/wicket/GitBlitWebApp_de.properties

@@ -743,7 +743,7 @@
gb.sshKeyPermissionDescription = Geben Sie die Zugriffberechtigung f\u00fcr den SSH Key an
gb.transportPreference = \u00dcbertragungseinstellungen
gb.transportPreferenceDescription = Geben Sie die \u00dcbertragungsart an, die Sie f\u00fcr das Klonen bevorzugen
gb.diffDeletedFileSkipped = (gel\u00f6schte Datei)
gb.diffDeletedFileSkipped = (gel\u00f6scht)
gb.diffFileDiffTooLarge = Zu viele \u00c4nderungen; Diff wird nicht angezeigt
gb.diffNewFile = Neue Datei
gb.diffDeletedFile = Datei wurde gel\u00f6scht

 src/main/java/com/gitblit/wicket/GitBlitWebApp_fr.properties

@@ -672,7 +672,7 @@
gb.mergeToDescription = branche d'int\u00e9gration par d\u00e9faut pour fusionner les correctifs li\u00e9s aux tickets
gb.myTickets = mes tickets
gb.yourAssignedTickets = dont vous \u00eates responsable
gb.diffDeletedFileSkipped = (fichier effac\u00e9)
gb.diffDeletedFileSkipped = (effac\u00e9)
gb.diffFileDiffTooLarge = Trop de diff\u00e9rences, affichage supprim\u00e9e
gb.diffNewFile = Nouveau fichier
gb.diffDeletedFile = Fichier a \u00e9t\u00e9 effac\u00e9

 src/main/java/com/gitblit/wicket/pages/CommitDiffPage.java

@@ -145,10 +145,10 @@
                    hasSubmodule = submodule.hasSubmodule;

                    // add relative link
                    item.add(new LinkPanel("pathName", "list", entry.path + " @ " + getShortObjectId(submoduleId), "#" + entry.path));
                    item.add(new LinkPanel("pathName", "list", entry.path + " @ " + getShortObjectId(submoduleId), "#n" + entry.objectId));
                } else {
                    // add relative link
                    item.add(new LinkPanel("pathName", "list", entry.path, "#" + entry.path));
                    item.add(new LinkPanel("pathName", "list", entry.path, "#n" + entry.objectId));
                }

                // quick links

 src/main/java/com/gitblit/wicket/pages/ComparePage.java

@@ -160,10 +160,10 @@
                        hasSubmodule = submodule.hasSubmodule;

                        // add relative link
                        item.add(new LinkPanel("pathName", "list", entry.path + " @ " + getShortObjectId(submoduleId), "#" + entry.path));
                        item.add(new LinkPanel("pathName", "list", entry.path + " @ " + getShortObjectId(submoduleId), "#n" + entry.objectId));
                    } else {
                        // add relative link
                        item.add(new LinkPanel("pathName", "list", entry.path, "#" + entry.path));
                        item.add(new LinkPanel("pathName", "list", entry.path, "#n" + entry.objectId));
                    }

                    // quick links