Merge "Add lines count parameter to the inlineComments function."

gerrit-server/src/main/java/com/google/gerrit/server/mail/CommentSender.java

@@ -78,6 +78,10 @@ public class CommentSender extends ReplyToChangeSender {
   }
 
   public String getInlineComments() {
+    return getInlineComments(1);
+  }
+
+  public String getInlineComments(int lines) {
     StringBuilder  cmts = new StringBuilder();
 
     final Repository repo = getRepository();
@@ -121,19 +125,29 @@ public class CommentSender extends ReplyToChangeSender {
           }
         }
 
-        cmts.append("Line " + lineNbr);
         if (currentFileData != null) {
+          int maxLines;
           try {
-            final String lineStr = currentFileData.getLine(side, lineNbr);
-            cmts.append(": ");
-            cmts.append(lineStr);
-          } catch (Throwable cce) {
-            // Don't quote the line if we can't safely convert it.
+            maxLines = currentFileData.getLineCount(side);
+          } catch (Throwable e) {
+            maxLines = lineNbr;
           }
+
+          final int startLine = Math.max(1, lineNbr - lines + 1);
+          final int stopLine = Math.min(maxLines, lineNbr + lines);
+
+          for (int line = startLine; line <= lineNbr; ++line) {
+            appendFileLine(cmts, currentFileData, side, line);
           }
-        cmts.append("\n");
 
           cmts.append(c.getMessage().trim());
+          cmts.append("\n");
+
+          for (int line = lineNbr + 1; line < stopLine; ++line) {
+            appendFileLine(cmts, currentFileData, side, line);
+          }
+        }
+
         cmts.append("\n\n");
       }
     } finally {
@@ -144,6 +158,18 @@ public class CommentSender extends ReplyToChangeSender {
     return cmts.toString();
   }
 
+  private void appendFileLine(StringBuilder cmts, PatchFile fileData, short side, int line) {
+    cmts.append("Line " + line);
+    try {
+      final String lineStr = fileData.getLine(side, line);
+      cmts.append(": ");
+      cmts.append(lineStr);
+    } catch (Throwable e) {
+      // Don't quote the line if we can't safely convert it.
+    }
+    cmts.append("\n");
+  }
+
   private Repository getRepository() {
     try {
       return args.server.openRepository(projectState.getProject().getNameKey());

gerrit-server/src/main/java/com/google/gerrit/server/patch/PatchFile.java

@@ -111,6 +111,35 @@ public class PatchFile {
     }
   }
 
+  /**
+   * Return number of lines in file.
+   *
+   * @param file the file index to extract.
+   * @return number of lines in file.
+   * @throws CorruptEntityException the patch cannot be read.
+   * @throws IOException the patch or complete file content cannot be read.
+   * @throws NoSuchEntityException the file is not exist.
+   */
+  public int getLineCount(final int file)
+      throws CorruptEntityException, IOException, NoSuchEntityException {
+    switch (file) {
+      case 0:
+        if (a == null) {
+          a = load(aTree, entry.getOldName());
+        }
+        return a.size();
+
+      case 1:
+        if (b == null) {
+          b = load(bTree, entry.getNewName());
+        }
+        return b.size();
+
+      default:
+        throw new NoSuchEntityException();
+    }
+  }
+
   private Text load(final ObjectId tree, final String path)
       throws MissingObjectException, IncorrectObjectTypeException,
       CorruptObjectException, IOException {

gerrit-server/src/main/resources/com/google/gerrit/server/mail/Comment.vm

@@ -43,5 +43,11 @@ Change subject: $change.subject
 $email.coverLetter
 
 #end
+##
+## It is possible to increase the span of the quoted lines by using the line
+## count parameter when calling $email.inlineComments as a function.
+##
+## Example: #if($email.inlineComments)$email.getInlineComments(5)#end
+##
 #if($email.inlineComments)$email.inlineComments#end
 #end