37 files changed, 203 insertions, 1 deletions
diff --git a/app/views/common/_diff.rhtml b/app/views/common/_diff.rhtml
index 07bd4745f..104845b4d 100644
--- a/app/views/common/_diff.rhtml
+++ b/app/views/common/_diff.rhtml
@@ -1,4 +1,5 @@
-<% Redmine::UnifiedDiff.new(diff, :type => diff_type).each do |table_file| -%>
+<% diff = Redmine::UnifiedDiff.new(diff, :type => diff_type, :max_lines => Setting.diff_max_lines_displayed.to_i) -%>
+<% diff.each do |table_file| -%>
 <div class="autoscroll">
 <% if diff_type == 'sbs' -%>
 <table class="filecontent CodeRay">
@@ -62,3 +63,5 @@
 
 </div>
 <% end -%>
+
+<%= l(:text_diff_truncated) if diff.truncated? %>
diff --git a/app/views/settings/_general.rhtml b/app/views/settings/_general.rhtml
index 06db77b22..9889702a2 100644
--- a/app/views/settings/_general.rhtml
+++ b/app/views/settings/_general.rhtml
@@ -48,6 +48,9 @@
 <p><label><%= l(:setting_feeds_limit) %></label>
 <%= text_field_tag 'settings[feeds_limit]', Setting.feeds_limit, :size => 6 %></p>
 
+<p><label><%= l(:setting_diff_max_lines_displayed) %></label>
+<%= text_field_tag 'settings[diff_max_lines_displayed]', Setting.diff_max_lines_displayed, :size => 6 %></p>
+
 <p><label><%= l(:setting_gravatar_enabled) %></label>
 <%= check_box_tag 'settings[gravatar_enabled]', 1, Setting.gravatar_enabled? %><%= hidden_field_tag 'settings[gravatar_enabled]', 0 %></p>
 </div>
diff --git a/config/settings.yml b/config/settings.yml
index 02f0b13b5..50064450f 100644
--- a/config/settings.yml
+++ b/config/settings.yml
@@ -61,6 +61,9 @@ protocol:
 feeds_limit:
   format: int
   default: 15
+diff_max_lines_displayed:
+  format: int
+  default: 1500
 enabled_scm:
   serialized: true
   default: 
diff --git a/lang/bg.yml b/lang/bg.yml
index 9bce327c6..5170a977e 100644
--- a/lang/bg.yml
+++ b/lang/bg.yml
@@ -694,3 +694,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/ca.yml b/lang/ca.yml
index 250bb1d8d..79398078b 100644
--- a/lang/ca.yml
+++ b/lang/ca.yml
@@ -695,3 +695,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/cs.yml b/lang/cs.yml
index cb7f361bc..ba22ab12c 100644
--- a/lang/cs.yml
+++ b/lang/cs.yml
@@ -699,3 +699,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/da.yml b/lang/da.yml
index a8acfa49b..5b8ee5b89 100644
--- a/lang/da.yml
+++ b/lang/da.yml
@@ -695,3 +695,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/de.yml b/lang/de.yml
index 82c91d991..93afc016b 100644
--- a/lang/de.yml
+++ b/lang/de.yml
@@ -696,3 +696,5 @@ enumeration_doc_categories: Dokumentenkategorien
 enumeration_activities: Aktivitäten (Zeiterfassung)
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/en.yml b/lang/en.yml
index 256141d07..b2d7efc4f 100644
--- a/lang/en.yml
+++ b/lang/en.yml
@@ -223,6 +223,7 @@ setting_mail_handler_api_enabled: Enable WS for incoming emails
 setting_mail_handler_api_key: API key
 setting_sequential_project_identifiers: Generate sequential project identifiers
 setting_gravatar_enabled: Use Gravatar user icons
+setting_diff_max_lines_displayed: Max number of diff lines displayed
 
 permission_edit_project: Edit project
 permission_select_project_modules: Select project modules
@@ -670,6 +671,7 @@ text_enumeration_destroy_question: '%d objects are assigned to this value.'
 text_enumeration_category_reassign_to: 'Reassign them to this value:'
 text_email_delivery_not_configured: "Email delivery is not configured, and notifications are disabled.\nConfigure your SMTP server in config/email.yml and restart the application to enable them."
 text_repository_usernames_mapping: "Select or update the Redmine user mapped to each username found in the repository log.\nUsers with the same Redmine and repository username or email are automatically mapped."
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
 
 default_role_manager: Manager
 default_role_developper: Developer
diff --git a/lang/es.yml b/lang/es.yml
index 0c773496d..52d3c30aa 100644
--- a/lang/es.yml
+++ b/lang/es.yml
@@ -679,3 +679,5 @@ text_wiki_destroy_confirmation: ¿Seguro que quiere borrar el wiki y todo su con
 text_workflow_edit: Seleccionar un flujo de trabajo para actualizar
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/fi.yml b/lang/fi.yml
index e917ec2a8..be0a46b06 100644
--- a/lang/fi.yml
+++ b/lang/fi.yml
@@ -694,3 +694,5 @@ permission_edit_own_messages: Muokkaa omia viestejä
 permission_delete_own_messages: Poista omia viestejä
 label_user_activity: "Käyttäjän %s historia"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/fr.yml b/lang/fr.yml
index ffc1b75f3..daa6f2f60 100644
--- a/lang/fr.yml
+++ b/lang/fr.yml
@@ -223,6 +223,7 @@ setting_mail_handler_api_enabled: "Activer le WS pour la réception d'emails"
 setting_mail_handler_api_key: Clé de protection de l'API
 setting_sequential_project_identifiers: Générer des identifiants de projet séquentiels
 setting_gravatar_enabled: Afficher les Gravatar des utilisateurs
+setting_diff_max_lines_displayed: Nombre maximum de lignes de diff affichées
 
 permission_edit_project: Modifier le projet
 permission_select_project_modules: Choisir les modules
@@ -670,6 +671,7 @@ text_enumeration_destroy_question: 'Cette valeur est affectée à %d objets.'
 text_enumeration_category_reassign_to: 'Réaffecter les objets à cette valeur:'
 text_email_delivery_not_configured: "L'envoi de mail n'est pas configuré, les notifications sont désactivées.\nConfigurez votre serveur SMTP dans config/email.yml et redémarrez l'application pour les activer."
 text_repository_usernames_mapping: "Vous pouvez sélectionner ou modifier l'utilisateur Redmine associé à chaque nom d'utilisateur figurant dans l'historique du dépôt.\nLes utilisateurs avec le même identifiant ou la même adresse mail seront automatiquement associés."
+text_diff_truncated: '... Ce différentiel a été tronqué car il excède la taille maximale pouvant être affichée.'
 
 default_role_manager: Manager
 default_role_developper: Développeur
diff --git a/lang/he.yml b/lang/he.yml
index da9160809..552c42233 100644
--- a/lang/he.yml
+++ b/lang/he.yml
@@ -694,3 +694,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/hu.yml b/lang/hu.yml
index e3c649026..24a9da4a5 100644
--- a/lang/hu.yml
+++ b/lang/hu.yml
@@ -695,3 +695,5 @@ permission_edit_own_messages: Saját üzenetek szerkesztése
 permission_delete_own_messages: Saját üzenetek törlése
 label_user_activity: "%s tevékenységei"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/it.yml b/lang/it.yml
index 3ae2a323d..c5efcb219 100644
--- a/lang/it.yml
+++ b/lang/it.yml
@@ -694,3 +694,5 @@ permission_edit_own_messages: Modifica propri messaggi
 permission_delete_own_messages: Elimina propri messaggi
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/ja.yml b/lang/ja.yml
index 71e50a794..e1dfa2d8a 100644
--- a/lang/ja.yml
+++ b/lang/ja.yml
@@ -695,3 +695,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/ko.yml b/lang/ko.yml
index a476966a3..9d2fb6d8e 100644
--- a/lang/ko.yml
+++ b/lang/ko.yml
@@ -694,3 +694,5 @@ permission_edit_own_messages: 자기 메시지 편집
 permission_delete_own_messages: 자기 메시지 삭제
 label_user_activity: "%s의 활동"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/lt.yml b/lang/lt.yml
index 8a7db6b40..cd83a1b22 100644
--- a/lang/lt.yml
+++ b/lang/lt.yml
@@ -696,3 +696,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/nl.yml b/lang/nl.yml
index e70fd9997..51b91a1a1 100644
--- a/lang/nl.yml
+++ b/lang/nl.yml
@@ -696,3 +696,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/no.yml b/lang/no.yml
index afad80787..8cf2321f1 100644
--- a/lang/no.yml
+++ b/lang/no.yml
@@ -695,3 +695,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/pl.yml b/lang/pl.yml
index 7aea9bbfd..0591f7a25 100644
--- a/lang/pl.yml
+++ b/lang/pl.yml
@@ -713,3 +713,5 @@ text_workflow_edit: Zaznacz rolę i typ zagadnienia do edycji przepływu
 
 label_user_activity: "Aktywność: %s"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/pt-br.yml b/lang/pt-br.yml
index 5f202de50..72137889b 100644
--- a/lang/pt-br.yml
+++ b/lang/pt-br.yml
@@ -695,3 +695,5 @@ permission_edit_own_messages: Editar próprias mensagens
 permission_delete_own_messages: Excluir próprias mensagens
 label_user_activity: "Atividade de %s"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/pt.yml b/lang/pt.yml
index 0df3cda38..25110002a 100644
--- a/lang/pt.yml
+++ b/lang/pt.yml
@@ -696,3 +696,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/ro.yml b/lang/ro.yml
index 27d9c8e16..72d8f871c 100644
--- a/lang/ro.yml
+++ b/lang/ro.yml
@@ -694,3 +694,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/ru.yml b/lang/ru.yml
index 4d7807cb1..acf916006 100644
--- a/lang/ru.yml
+++ b/lang/ru.yml
@@ -728,3 +728,5 @@ text_wiki_destroy_confirmation: Вы уверены, что хотите уда�
 text_workflow_edit: Выберите роль и трекер для редактирования последовательности состояний
 
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/sk.yml b/lang/sk.yml
index 9cea7d006..8f874356b 100644
--- a/lang/sk.yml
+++ b/lang/sk.yml
@@ -700,3 +700,5 @@ permission_delete_own_messages: Delete own messages
 text_repository_usernames_mapping: "Select or update the Redmine user mapped to each username found in the repository log.\nUsers with the same Redmine and repository username or email are automatically mapped."
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/sr.yml b/lang/sr.yml
index 797e94f54..4a4b6d083 100644
--- a/lang/sr.yml
+++ b/lang/sr.yml
@@ -695,3 +695,5 @@ permission_delete_own_messages: Delete own messages
 text_repository_usernames_mapping: "Select or update the Redmine user mapped to each username found in the repository log.\nUsers with the same Redmine and repository username or email are automatically mapped."
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/sv.yml b/lang/sv.yml
index f15febe70..5c7e5e0d2 100644
--- a/lang/sv.yml
+++ b/lang/sv.yml
@@ -695,3 +695,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/th.yml b/lang/th.yml
index 2689c9889..a569a50d5 100644
--- a/lang/th.yml
+++ b/lang/th.yml
@@ -697,3 +697,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/tr.yml b/lang/tr.yml
index bdd971268..a587b4214 100644
--- a/lang/tr.yml
+++ b/lang/tr.yml
@@ -695,3 +695,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/uk.yml b/lang/uk.yml
index 7b3c446f4..b5d7c9789 100644
--- a/lang/uk.yml
+++ b/lang/uk.yml
@@ -696,3 +696,5 @@ permission_edit_own_messages: Edit own messages
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/vn.yml b/lang/vn.yml
index 93a243ff3..de5a4f058 100644
--- a/lang/vn.yml
+++ b/lang/vn.yml
@@ -697,3 +697,5 @@ text_repository_usernames_mapping: "Chọn hoặc cập nhật ánh xạ ngườ
 permission_delete_own_messages: Delete own messages
 label_user_activity: "%s's activity"
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/zh-tw.yml b/lang/zh-tw.yml
index a23df295b..f52f4d815 100644
--- a/lang/zh-tw.yml
+++ b/lang/zh-tw.yml
@@ -696,3 +696,5 @@ default_activity_development: 開發
 enumeration_issue_priorities: 項目優先權
 enumeration_doc_categories: 文件分類
 enumeration_activities: 活動 (時間追蹤)
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lang/zh.yml b/lang/zh.yml
index 721d21719..428c6e67d 100644
--- a/lang/zh.yml
+++ b/lang/zh.yml
@@ -696,3 +696,5 @@ enumeration_issue_priorities: 问题优先级
 enumeration_doc_categories: 文档类别
 enumeration_activities: 活动（时间跟踪）
 label_updated_time_by: Updated by %s %s ago
+text_diff_truncated: '... This diff was truncated because it exceeds the maximum size that can be displayed.'
+setting_diff_max_lines_displayed: Max number of diff lines displayed
diff --git a/lib/redmine/unified_diff.rb b/lib/redmine/unified_diff.rb
index 5408a1ef9..bf4dec335 100644
--- a/lib/redmine/unified_diff.rb
+++ b/lib/redmine/unified_diff.rb
@@ -19,8 +19,11 @@ module Redmine
   # Class used to parse unified diffs
   class UnifiedDiff < Array  
     def initialize(diff, options={})
+      options.assert_valid_keys(:type, :max_lines)
       diff_type = options[:type] || 'inline'
       
+      lines = 0
+      @truncated = false
       diff_table = DiffTable.new(diff_type)
       diff.each do |line|
         if line =~ /^(---|\+\+\+) (.*)$/
@@ -28,10 +31,17 @@ module Redmine
           diff_table = DiffTable.new(diff_type)
         end
         diff_table.add_line line
+        lines += 1
+        if options[:max_lines] && lines > options[:max_lines]
+          @truncated = true
+          break
+        end
       end
       self << diff_table unless diff_table.empty?
       self
     end
+    
+    def truncated?; @truncated; end
   end
 
   # Class that represents a file diff
diff --git a/test/fixtures/diffs/subversion.diff b/test/fixtures/diffs/subversion.diff
new file mode 100644
index 000000000..9b6c9d086
--- /dev/null
+++ b/test/fixtures/diffs/subversion.diff
@@ -0,0 +1,79 @@
+Index: app/views/settings/_general.rhtml
+===================================================================
+--- app/views/settings/_general.rhtml	(revision 2094)
++++ app/views/settings/_general.rhtml	(working copy)
+@@ -48,6 +48,9 @@
+ <p><label><%= l(:setting_feeds_limit) %></label>
+ <%= text_field_tag 'settings[feeds_limit]', Setting.feeds_limit, :size => 6 %></p>
+ 
++<p><label><%= l(:setting_diff_max_lines_displayed) %></label>
++<%= text_field_tag 'settings[diff_max_lines_displayed]', Setting.diff_max_lines_displayed, :size => 6 %></p>
++
+ <p><label><%= l(:setting_gravatar_enabled) %></label>
+ <%= check_box_tag 'settings[gravatar_enabled]', 1, Setting.gravatar_enabled? %><%= hidden_field_tag 'settings[gravatar_enabled]', 0 %></p>
+ </div>
+Index: app/views/common/_diff.rhtml
+===================================================================
+--- app/views/common/_diff.rhtml	(revision 2111)
++++ app/views/common/_diff.rhtml	(working copy)
+@@ -1,4 +1,5 @@
+-<% Redmine::UnifiedDiff.new(diff, :type => diff_type).each do |table_file| -%>
++<% diff = Redmine::UnifiedDiff.new(diff, :type => diff_type, :max_lines => Setting.diff_max_lines_displayed.to_i) -%>
++<% diff.each do |table_file| -%>
+ <div class="autoscroll">
+ <% if diff_type == 'sbs' -%>
+ <table class="filecontent CodeRay">
+@@ -62,3 +63,5 @@
+ 
+ </div>
+ <% end -%>
++
++<%= l(:text_diff_truncated) if diff.truncated? %>
+Index: lang/lt.yml
+===================================================================
+--- config/settings.yml	(revision 2094)
++++ config/settings.yml	(working copy)
+@@ -61,6 +61,9 @@
+ feeds_limit:
+   format: int
+   default: 15
++diff_max_lines_displayed:
++  format: int
++  default: 1500
+ enabled_scm:
+   serialized: true
+   default: 
+Index: lib/redmine/unified_diff.rb
+===================================================================
+--- lib/redmine/unified_diff.rb	(revision 2110)
++++ lib/redmine/unified_diff.rb	(working copy)
+@@ -19,8 +19,11 @@
+   # Class used to parse unified diffs
+   class UnifiedDiff < Array  
+     def initialize(diff, options={})
++      options.assert_valid_keys(:type, :max_lines)
+       diff_type = options[:type] || 'inline'
+       
++      lines = 0
++      @truncated = false
+       diff_table = DiffTable.new(diff_type)
+       diff.each do |line|
+         if line =~ /^(---|\+\+\+) (.*)$/
+@@ -28,10 +31,17 @@
+           diff_table = DiffTable.new(diff_type)
+         end
+         diff_table.add_line line
++        lines += 1
++        if options[:max_lines] && lines > options[:max_lines]
++          @truncated = true
++          break
++        end
+       end
+       self << diff_table unless diff_table.empty?
+       self
+     end
++    
++    def truncated?; @truncated; end
+   end
+ 
+   # Class that represents a file diff
diff --git a/test/unit/lib/redmine/unified_diff_test.rb b/test/unit/lib/redmine/unified_diff_test.rb
new file mode 100644
index 000000000..5e6ba1aef
--- /dev/null
+++ b/test/unit/lib/redmine/unified_diff_test.rb
@@ -0,0 +1,42 @@
+# Redmine - project management software
+# Copyright (C) 2006-2008  Jean-Philippe Lang
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+require File.dirname(__FILE__) + '/../../../test_helper'
+
+class Redmine::UnifiedDiffTest < Test::Unit::TestCase
+  
+  def setup
+  end
+
+  def test_subversion_diff
+    diff = Redmine::UnifiedDiff.new(read_diff_fixture('subversion.diff'))
+    # number of files
+    assert_equal 4, diff.size
+    assert diff.detect {|file| file.file_name =~ %r{^config/settings.yml}}
+  end
+  
+  def test_truncate_diff
+    diff = Redmine::UnifiedDiff.new(read_diff_fixture('subversion.diff'), :max_lines => 20)
+    assert_equal 2, diff.size
+  end
+
+  private
+  
+  def read_diff_fixture(filename)
+    File.new(File.join(File.dirname(__FILE__), '/../../../fixtures/diffs', filename)).read
+  end
+end