diff options
author | Sean McGivern <sean@mcgivern.me.uk> | 2017-06-14 20:08:49 +0300 |
---|---|---|
committer | Sean McGivern <sean@mcgivern.me.uk> | 2017-06-14 20:08:49 +0300 |
commit | 5771b946c2e68fd4b9a8ff040c168b568b68a586 (patch) | |
tree | d1db1ad73776b0c97c4df5880363020f2cb252ae /app | |
parent | 5468bf7e0b2c6bf39f5a9b43b5b3864e7e57556d (diff) | |
parent | 794425456322864f37dbd862aca9bc6b6447591a (diff) |
Merge branch 'dm-diff-viewers' into 'master'
Implement diff viewers
Closes #30501 and #19931
See merge request !11777
Diffstat (limited to 'app')
28 files changed, 305 insertions, 35 deletions
diff --git a/app/helpers/diff_helper.rb b/app/helpers/diff_helper.rb index 2ae3a616933..06822747d11 100644 --- a/app/helpers/diff_helper.rb +++ b/app/helpers/diff_helper.rb @@ -124,6 +124,30 @@ module DiffHelper !diff_file.deleted_file? && @merge_request && @merge_request.source_project end + def diff_render_error_reason(viewer) + case viewer.render_error + when :too_large + "it is too large" + when :server_side_but_stored_externally + case viewer.diff_file.external_storage + when :lfs + 'it is stored in LFS' + else + 'it is stored externally' + end + end + end + + def diff_render_error_options(viewer) + diff_file = viewer.diff_file + options = [] + + blob_url = namespace_project_blob_path(@project.namespace, @project, tree_join(diff_file.content_sha, diff_file.file_path)) + options << link_to('view the blob', blob_url) + + options + end + private def diff_btn(title, name, selected) diff --git a/app/models/blob_viewer/server_side.rb b/app/models/blob_viewer/server_side.rb index e6bcacf7f70..fbc1b520c01 100644 --- a/app/models/blob_viewer/server_side.rb +++ b/app/models/blob_viewer/server_side.rb @@ -13,14 +13,12 @@ module BlobViewer end def render_error - if blob.stored_externally? - # Files that are not stored in the repository, like LFS files and - # build artifacts, can only be rendered using a client-side viewer, - # since we do not want to read large amounts of data into memory on the - # server side. Client-side viewers use JS and can fetch the file from - # `blob_raw_url` using AJAX. - return :server_side_but_stored_externally - end + # Files that are not stored in the repository, like LFS files and + # build artifacts, can only be rendered using a client-side viewer, + # since we do not want to read large amounts of data into memory on the + # server side. Client-side viewers use JS and can fetch the file from + # `blob_raw_url` using AJAX. + return :server_side_but_stored_externally if blob.stored_externally? super end diff --git a/app/models/diff_viewer/added.rb b/app/models/diff_viewer/added.rb new file mode 100644 index 00000000000..1909e6ef9d8 --- /dev/null +++ b/app/models/diff_viewer/added.rb @@ -0,0 +1,8 @@ +module DiffViewer + class Added < Base + include Simple + include Static + + self.partial_name = 'added' + end +end diff --git a/app/models/diff_viewer/base.rb b/app/models/diff_viewer/base.rb new file mode 100644 index 00000000000..0cbe714288d --- /dev/null +++ b/app/models/diff_viewer/base.rb @@ -0,0 +1,87 @@ +module DiffViewer + class Base + PARTIAL_PATH_PREFIX = 'projects/diffs/viewers'.freeze + + class_attribute :partial_name, :type, :extensions, :file_types, :binary, :switcher_icon, :switcher_title + + # These limits relate to the sum of the old and new blob sizes. + # Limits related to the actual size of the diff are enforced in Gitlab::Diff::File. + class_attribute :collapse_limit, :size_limit + + delegate :partial_path, :loading_partial_path, :rich?, :simple?, :text?, :binary?, to: :class + + attr_reader :diff_file + + delegate :project, to: :diff_file + + def initialize(diff_file) + @diff_file = diff_file + @initially_binary = diff_file.binary? + end + + def self.partial_path + File.join(PARTIAL_PATH_PREFIX, partial_name) + end + + def self.rich? + type == :rich + end + + def self.simple? + type == :simple + end + + def self.binary? + binary + end + + def self.text? + !binary? + end + + def self.can_render?(diff_file, verify_binary: true) + can_render_blob?(diff_file.old_blob, verify_binary: verify_binary) && + can_render_blob?(diff_file.new_blob, verify_binary: verify_binary) + end + + def self.can_render_blob?(blob, verify_binary: true) + return true if blob.nil? + return false if verify_binary && binary? != blob.binary? + return true if extensions&.include?(blob.extension) + return true if file_types&.include?(blob.file_type) + + false + end + + def collapsed? + return @collapsed if defined?(@collapsed) + return @collapsed = true if diff_file.collapsed? + + @collapsed = !diff_file.expanded? && collapse_limit && diff_file.raw_size > collapse_limit + end + + def too_large? + return @too_large if defined?(@too_large) + return @too_large = true if diff_file.too_large? + + @too_large = size_limit && diff_file.raw_size > size_limit + end + + def binary_detected_after_load? + !@initially_binary && diff_file.binary? + end + + # This method is used on the server side to check whether we can attempt to + # render the diff_file at all. Human-readable error messages are found in the + # `BlobHelper#diff_render_error_reason` helper. + def render_error + if too_large? + :too_large + end + end + + def prepare! + # To be overridden by subclasses + end + end +end diff --git a/app/models/diff_viewer/client_side.rb b/app/models/diff_viewer/client_side.rb new file mode 100644 index 00000000000..cf41d07f8eb --- /dev/null +++ b/app/models/diff_viewer/client_side.rb @@ -0,0 +1,10 @@ +module DiffViewer + module ClientSide + extend ActiveSupport::Concern + + included do + self.collapse_limit = 1.megabyte + self.size_limit = 10.megabytes + end + end +end diff --git a/app/models/diff_viewer/deleted.rb b/app/models/diff_viewer/deleted.rb new file mode 100644 index 00000000000..9c129bac694 --- /dev/null +++ b/app/models/diff_viewer/deleted.rb @@ -0,0 +1,8 @@ +module DiffViewer + class Deleted < Base + include Simple + include Static + + self.partial_name = 'deleted' + end +end diff --git a/app/models/diff_viewer/image.rb b/app/models/diff_viewer/image.rb new file mode 100644 index 00000000000..759d9a36ebb --- /dev/null +++ b/app/models/diff_viewer/image.rb @@ -0,0 +1,12 @@ +module DiffViewer + class Image < Base + include Rich + include ClientSide + + self.partial_name = 'image' + self.extensions = UploaderHelper::IMAGE_EXT + self.binary = true + self.switcher_icon = 'picture-o' + self.switcher_title = 'image diff' + end +end diff --git a/app/models/diff_viewer/mode_changed.rb b/app/models/diff_viewer/mode_changed.rb new file mode 100644 index 00000000000..d487d996f8d --- /dev/null +++ b/app/models/diff_viewer/mode_changed.rb @@ -0,0 +1,8 @@ +module DiffViewer + class ModeChanged < Base + include Simple + include Static + + self.partial_name = 'mode_changed' + end +end diff --git a/app/models/diff_viewer/no_preview.rb b/app/models/diff_viewer/no_preview.rb new file mode 100644 index 00000000000..5455fee4490 --- /dev/null +++ b/app/models/diff_viewer/no_preview.rb @@ -0,0 +1,9 @@ +module DiffViewer + class NoPreview < Base + include Simple + include Static + + self.partial_name = 'no_preview' + self.binary = true + end +end diff --git a/app/models/diff_viewer/not_diffable.rb b/app/models/diff_viewer/not_diffable.rb new file mode 100644 index 00000000000..4f9638626ea --- /dev/null +++ b/app/models/diff_viewer/not_diffable.rb @@ -0,0 +1,9 @@ +module DiffViewer + class NotDiffable < Base + include Simple + include Static + + self.partial_name = 'not_diffable' + self.binary = true + end +end diff --git a/app/models/diff_viewer/renamed.rb b/app/models/diff_viewer/renamed.rb new file mode 100644 index 00000000000..f1fbfd8c6d5 --- /dev/null +++ b/app/models/diff_viewer/renamed.rb @@ -0,0 +1,8 @@ +module DiffViewer + class Renamed < Base + include Simple + include Static + + self.partial_name = 'renamed' + end +end diff --git a/app/models/diff_viewer/rich.rb b/app/models/diff_viewer/rich.rb new file mode 100644 index 00000000000..3b0ca6e4cff --- /dev/null +++ b/app/models/diff_viewer/rich.rb @@ -0,0 +1,11 @@ +module DiffViewer + module Rich + extend ActiveSupport::Concern + + included do + self.type = :rich + self.switcher_icon = 'file-text-o' + self.switcher_title = 'rendered diff' + end + end +end diff --git a/app/models/diff_viewer/server_side.rb b/app/models/diff_viewer/server_side.rb new file mode 100644 index 00000000000..aed1a0791b1 --- /dev/null +++ b/app/models/diff_viewer/server_side.rb @@ -0,0 +1,26 @@ +module DiffViewer + module ServerSide + extend ActiveSupport::Concern + + included do + self.collapse_limit = 1.megabyte + self.size_limit = 5.megabytes + end + + def prepare! + diff_file.old_blob&.load_all_data! + diff_file.new_blob&.load_all_data! + end + + def render_error + # Files that are not stored in the repository, like LFS files and + # build artifacts, can only be rendered using a client-side viewer, + # since we do not want to read large amounts of data into memory on the + # server side. Client-side viewers use JS and can fetch the file from + # `diff_file_blob_raw_path` and `diff_file_old_blob_raw_path` using AJAX. + return :server_side_but_stored_externally if diff_file.stored_externally? + + super + end + end +end diff --git a/app/models/diff_viewer/simple.rb b/app/models/diff_viewer/simple.rb new file mode 100644 index 00000000000..65750996ee4 --- /dev/null +++ b/app/models/diff_viewer/simple.rb @@ -0,0 +1,11 @@ +module DiffViewer + module Simple + extend ActiveSupport::Concern + + included do + self.type = :simple + self.switcher_icon = 'code' + self.switcher_title = 'source diff' + end + end +end diff --git a/app/models/diff_viewer/static.rb b/app/models/diff_viewer/static.rb new file mode 100644 index 00000000000..d761328b3f6 --- /dev/null +++ b/app/models/diff_viewer/static.rb @@ -0,0 +1,10 @@ +module DiffViewer + module Static + extend ActiveSupport::Concern + + # We can always render a static viewer, even if the diff is too large. + def render_error + nil + end + end +end diff --git a/app/models/diff_viewer/text.rb b/app/models/diff_viewer/text.rb new file mode 100644 index 00000000000..98f4b2aea2a --- /dev/null +++ b/app/models/diff_viewer/text.rb @@ -0,0 +1,15 @@ +module DiffViewer + class Text < Base + include Simple + include ServerSide + + self.partial_name = 'text' + self.binary = false + + # Since the text diff viewer doesn't render the old and new blobs in full, + # we only need the limits related to the actual size of the diff which are + # already enforced in Gitlab::Diff::File. + self.collapse_limit = nil + self.size_limit = nil + end +end diff --git a/app/views/projects/diffs/_collapsed.html.haml b/app/views/projects/diffs/_collapsed.html.haml new file mode 100644 index 00000000000..8772bd4705f --- /dev/null +++ b/app/views/projects/diffs/_collapsed.html.haml @@ -0,0 +1,5 @@ +- diff_file = viewer.diff_file +- url = url_for(params.merge(action: :diff_for_path, old_path: diff_file.old_path, new_path: diff_file.new_path, file_identifier: diff_file.file_identifier)) +.nothing-here-block.diff-collapsed{ data: { diff_for_path: url } } + This diff is collapsed. + %a.click-to-expand Click to expand it. diff --git a/app/views/projects/diffs/_content.html.haml b/app/views/projects/diffs/_content.html.haml index ec1c434a4b8..68f74f702ea 100644 --- a/app/views/projects/diffs/_content.html.haml +++ b/app/views/projects/diffs/_content.html.haml @@ -1,27 +1,2 @@ -- blob = diff_file.blob - .diff-content - - if diff_file.too_large? - .nothing-here-block This diff could not be displayed because it is too large. - - elsif blob.truncated? - .nothing-here-block The file could not be displayed because it is too large. - - elsif blob.readable_text? - - if !diff_file.diffable? - .nothing-here-block This diff was suppressed by a .gitattributes entry. - - elsif diff_file.collapsed? - - url = url_for(params.merge(action: :diff_for_path, old_path: diff_file.old_path, new_path: diff_file.new_path, file_identifier: diff_file.file_identifier)) - .nothing-here-block.diff-collapsed{ data: { diff_for_path: url } } - This diff is collapsed. - %a.click-to-expand - Click to expand it. - - elsif diff_file.diff_lines.length > 0 - = render "projects/diffs/viewers/text", diff_file: diff_file - - else - - if diff_file.mode_changed? - .nothing-here-block File mode changed - - elsif diff_file.renamed_file? - .nothing-here-block File moved - - elsif blob.image? - = render "projects/diffs/viewers/image", diff_file: diff_file - - else - .nothing-here-block No preview for this file type + = render 'projects/diffs/viewer', viewer: diff_file.rich_viewer || diff_file.simple_viewer diff --git a/app/views/projects/diffs/_render_error.html.haml b/app/views/projects/diffs/_render_error.html.haml new file mode 100644 index 00000000000..47a9ac3ee6b --- /dev/null +++ b/app/views/projects/diffs/_render_error.html.haml @@ -0,0 +1,6 @@ +.nothing-here-block + This #{viewer.switcher_title} could not be displayed because #{diff_render_error_reason(viewer)}. + + You can + = diff_render_error_options(viewer).to_sentence(two_words_connector: ' or ', last_word_connector: ', or ').html_safe + instead. diff --git a/app/views/projects/diffs/_viewer.html.haml b/app/views/projects/diffs/_viewer.html.haml new file mode 100644 index 00000000000..5c4d1760871 --- /dev/null +++ b/app/views/projects/diffs/_viewer.html.haml @@ -0,0 +1,16 @@ +- hidden = local_assigns.fetch(:hidden, false) + +.diff-viewer{ data: { type: viewer.type }, class: ('hidden' if hidden) } + - if viewer.render_error + = render 'projects/diffs/render_error', viewer: viewer + - elsif viewer.collapsed? + = render 'projects/diffs/collapsed', viewer: viewer + - else + - viewer.prepare! + + -# In the rare case where the first kilobyte of the file looks like text, + -# but the file turns out to actually be binary after loading all data, + -# we fall back on the binary No Preview viewer. + - viewer = DiffViewer::NoPreview.new(viewer.diff_file) if viewer.binary_detected_after_load? + + = render viewer.partial_path, viewer: viewer diff --git a/app/views/projects/diffs/viewers/_added.html.haml b/app/views/projects/diffs/viewers/_added.html.haml new file mode 100644 index 00000000000..8004fe16688 --- /dev/null +++ b/app/views/projects/diffs/viewers/_added.html.haml @@ -0,0 +1,2 @@ +.nothing-here-block + File added diff --git a/app/views/projects/diffs/viewers/_deleted.html.haml b/app/views/projects/diffs/viewers/_deleted.html.haml new file mode 100644 index 00000000000..0ac7b4ca8f6 --- /dev/null +++ b/app/views/projects/diffs/viewers/_deleted.html.haml @@ -0,0 +1,2 @@ +.nothing-here-block + File deleted diff --git a/app/views/projects/diffs/viewers/_image.html.haml b/app/views/projects/diffs/viewers/_image.html.haml index ea75373581e..19d08181223 100644 --- a/app/views/projects/diffs/viewers/_image.html.haml +++ b/app/views/projects/diffs/viewers/_image.html.haml @@ -1,3 +1,4 @@ +- diff_file = viewer.diff_file - blob = diff_file.blob - old_blob = diff_file.old_blob - blob_raw_path = diff_file_blob_raw_path(diff_file) diff --git a/app/views/projects/diffs/viewers/_mode_changed.html.haml b/app/views/projects/diffs/viewers/_mode_changed.html.haml new file mode 100644 index 00000000000..69bc96bbdad --- /dev/null +++ b/app/views/projects/diffs/viewers/_mode_changed.html.haml @@ -0,0 +1,3 @@ +- diff_file = viewer.diff_file +.nothing-here-block + File mode changed from #{diff_file.a_mode} to #{diff_file.b_mode} diff --git a/app/views/projects/diffs/viewers/_no_preview.html.haml b/app/views/projects/diffs/viewers/_no_preview.html.haml new file mode 100644 index 00000000000..befe070af2b --- /dev/null +++ b/app/views/projects/diffs/viewers/_no_preview.html.haml @@ -0,0 +1,2 @@ +.nothing-here-block + No preview for this file type diff --git a/app/views/projects/diffs/viewers/_not_diffable.html.haml b/app/views/projects/diffs/viewers/_not_diffable.html.haml new file mode 100644 index 00000000000..b2c677ec59c --- /dev/null +++ b/app/views/projects/diffs/viewers/_not_diffable.html.haml @@ -0,0 +1,2 @@ +.nothing-here-block + This diff was suppressed by a .gitattributes entry. diff --git a/app/views/projects/diffs/viewers/_renamed.html.haml b/app/views/projects/diffs/viewers/_renamed.html.haml new file mode 100644 index 00000000000..ef05ee38d8d --- /dev/null +++ b/app/views/projects/diffs/viewers/_renamed.html.haml @@ -0,0 +1,2 @@ +.nothing-here-block + File moved diff --git a/app/views/projects/diffs/viewers/_text.html.haml b/app/views/projects/diffs/viewers/_text.html.haml index 120d3540223..509e68598c9 100644 --- a/app/views/projects/diffs/viewers/_text.html.haml +++ b/app/views/projects/diffs/viewers/_text.html.haml @@ -1,5 +1,5 @@ +- diff_file = viewer.diff_file - blob = diff_file.blob -- blob.load_all_data! - total_lines = blob.lines.size - total_lines -= 1 if total_lines > 0 && blob.lines.last.blank? - if diff_view == :parallel |