2018-11-18 11:00:15 +05:30
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# frozen_string_literal: true
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2015-12-23 02:04:40 +05:30
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module Banzai
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module Filter
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# Issues, Merge Requests, Snippets, Commits and Commit Ranges share
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# similar functionality in reference filtering.
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class AbstractReferenceFilter < ReferenceFilter
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include CrossProjectReference
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2019-09-04 21:01:54 +05:30
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# REFERENCE_PLACEHOLDER is used for re-escaping HTML text except found
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# reference (which we replace with placeholder during re-scaping). The
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# random number helps ensure it's pretty close to unique. Since it's a
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# transitory value (it never gets saved) we can initialize once, and it
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# doesn't matter if it changes on a restart.
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REFERENCE_PLACEHOLDER = "_reference_#{SecureRandom.hex(16)}_"
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REFERENCE_PLACEHOLDER_PATTERN = %r{#{REFERENCE_PLACEHOLDER}(\d+)}.freeze
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2015-12-23 02:04:40 +05:30
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def self.object_class
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# Implement in child class
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# Example: MergeRequest
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end
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def self.object_name
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2016-06-02 11:05:42 +05:30
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@object_name ||= object_class.name.underscore
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2015-12-23 02:04:40 +05:30
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end
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def self.object_sym
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2016-06-02 11:05:42 +05:30
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@object_sym ||= object_name.to_sym
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2015-12-23 02:04:40 +05:30
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end
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# Public: Find references in text (like `!123` for merge requests)
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#
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# AnyReferenceFilter.references_in(text) do |match, id, project_ref, matches|
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# object = find_object(project_ref, id)
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# "<a href=...>#{object.to_reference}</a>"
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# end
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#
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# text - String text to search.
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#
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# Yields the String match, the Integer referenced object ID, an optional String
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# of the external project reference, and all of the matchdata.
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#
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# Returns a String replaced with the return of the block.
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def self.references_in(text, pattern = object_class.reference_pattern)
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text.gsub(pattern) do |match|
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2020-03-13 15:44:24 +05:30
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if ident = identifier($~)
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yield match, ident, $~[:project], $~[:namespace], $~
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2017-08-17 22:00:37 +05:30
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else
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match
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end
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2015-12-23 02:04:40 +05:30
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end
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end
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2020-03-13 15:44:24 +05:30
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def self.identifier(match_data)
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symbol = symbol_from_match(match_data)
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parse_symbol(symbol, match_data) if object_class.reference_valid?(symbol)
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end
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def identifier(match_data)
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self.class.identifier(match_data)
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end
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def self.symbol_from_match(match)
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key = object_sym
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match[key] if match.names.include?(key.to_s)
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end
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# Transform a symbol extracted from the text to a meaningful value
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# In most cases these will be integers, so we call #to_i by default
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#
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# This method has the contract that if a string `ref` refers to a
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# record `record`, then `parse_symbol(ref) == record_identifier(record)`.
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def self.parse_symbol(symbol, match_data)
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symbol.to_i
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end
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# We assume that most classes are identifying records by ID.
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#
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# This method has the contract that if a string `ref` refers to a
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# record `record`, then `class.parse_symbol(ref) == record_identifier(record)`.
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def record_identifier(record)
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record.id
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end
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2016-01-14 18:37:52 +05:30
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def object_class
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self.class.object_class
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end
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def object_sym
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self.class.object_sym
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end
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def references_in(*args, &block)
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self.class.references_in(*args, &block)
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end
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2015-12-23 02:04:40 +05:30
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2017-09-10 17:25:29 +05:30
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# Implement in child class
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# Example: project.merge_requests.find
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2018-05-09 12:01:36 +05:30
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def find_object(parent_object, id)
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2015-12-23 02:04:40 +05:30
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end
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2017-09-10 17:25:29 +05:30
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# Override if the link reference pattern produces a different ID (global
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# ID vs internal ID, for instance) to the regular reference pattern.
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2018-05-09 12:01:36 +05:30
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def find_object_from_link(parent_object, id)
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find_object(parent_object, id)
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2017-09-10 17:25:29 +05:30
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end
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2016-06-02 11:05:42 +05:30
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2017-09-10 17:25:29 +05:30
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# Implement in child class
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# Example: project_merge_request_url
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2018-05-09 12:01:36 +05:30
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def url_for_object(object, parent_object)
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2017-09-10 17:25:29 +05:30
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end
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2018-05-09 12:01:36 +05:30
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def find_object_cached(parent_object, id)
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cached_call(:banzai_find_object, id, path: [object_class, parent_object.id]) do
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find_object(parent_object, id)
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2016-06-02 11:05:42 +05:30
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end
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end
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2018-05-09 12:01:36 +05:30
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def find_object_from_link_cached(parent_object, id)
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cached_call(:banzai_find_object_from_link, id, path: [object_class, parent_object.id]) do
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find_object_from_link(parent_object, id)
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2016-06-02 11:05:42 +05:30
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end
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end
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2018-03-17 18:26:18 +05:30
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def from_ref_cached(ref)
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cached_call("banzai_#{parent_type}_refs".to_sym, ref) do
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parent_from_ref(ref)
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2017-09-10 17:25:29 +05:30
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end
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2015-12-23 02:04:40 +05:30
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end
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2018-05-09 12:01:36 +05:30
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def url_for_object_cached(object, parent_object)
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cached_call(:banzai_url_for_object, object, path: [object_class, parent_object.id]) do
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url_for_object(object, parent_object)
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2015-12-23 02:04:40 +05:30
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end
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2016-06-02 11:05:42 +05:30
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end
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2015-12-23 02:04:40 +05:30
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2016-06-02 11:05:42 +05:30
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def call
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2018-03-17 18:26:18 +05:30
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return doc unless project || group
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2016-06-02 11:05:42 +05:30
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ref_pattern = object_class.reference_pattern
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link_pattern = object_class.link_reference_pattern
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2018-11-08 19:23:39 +05:30
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# Compile often used regexps only once outside of the loop
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ref_pattern_anchor = /\A#{ref_pattern}\z/
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link_pattern_start = /\A#{link_pattern}/
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link_pattern_anchor = /\A#{link_pattern}\z/
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2020-07-28 23:09:34 +05:30
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nodes.each_with_index do |node, index|
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2016-06-02 11:05:42 +05:30
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if text_node?(node) && ref_pattern
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2020-07-28 23:09:34 +05:30
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replace_text_when_pattern_matches(node, index, ref_pattern) do |content|
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2016-06-02 11:05:42 +05:30
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object_link_filter(content, ref_pattern)
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end
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2015-12-23 02:04:40 +05:30
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2016-06-02 11:05:42 +05:30
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elsif element_node?(node)
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2017-08-17 22:00:37 +05:30
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yield_valid_link(node) do |link, inner_html|
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2018-11-08 19:23:39 +05:30
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if ref_pattern && link =~ ref_pattern_anchor
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2020-07-28 23:09:34 +05:30
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replace_link_node_with_href(node, index, link) do
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2017-08-17 22:00:37 +05:30
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object_link_filter(link, ref_pattern, link_content: inner_html)
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2016-06-02 11:05:42 +05:30
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end
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next
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end
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next unless link_pattern
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2018-11-08 19:23:39 +05:30
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if link == inner_html && inner_html =~ link_pattern_start
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2020-07-28 23:09:34 +05:30
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replace_link_node_with_text(node, index) do
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2017-09-10 17:25:29 +05:30
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object_link_filter(inner_html, link_pattern, link_reference: true)
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2016-06-02 11:05:42 +05:30
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end
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next
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end
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2018-11-08 19:23:39 +05:30
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if link =~ link_pattern_anchor
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2020-07-28 23:09:34 +05:30
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replace_link_node_with_href(node, index, link) do
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2017-09-10 17:25:29 +05:30
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object_link_filter(link, link_pattern, link_content: inner_html, link_reference: true)
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2016-06-02 11:05:42 +05:30
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end
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next
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end
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end
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2016-01-14 18:37:52 +05:30
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end
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2015-12-23 02:04:40 +05:30
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end
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2016-06-02 11:05:42 +05:30
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doc
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2015-12-23 02:04:40 +05:30
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end
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# Replace references (like `!123` for merge requests) in text with links
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# to the referenced object's details page.
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#
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# text - String text to replace references in.
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# pattern - Reference pattern to match against.
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2017-08-17 22:00:37 +05:30
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# link_content - Original content of the link being replaced.
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2017-09-10 17:25:29 +05:30
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# link_reference - True if this was using the link reference pattern,
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# false otherwise.
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2015-12-23 02:04:40 +05:30
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#
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# Returns a String with references replaced with links. All links
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# have `gfm` and `gfm-OBJECT_NAME` class names attached for styling.
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2017-09-10 17:25:29 +05:30
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def object_link_filter(text, pattern, link_content: nil, link_reference: false)
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2017-08-17 22:00:37 +05:30
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references_in(text, pattern) do |match, id, project_ref, namespace_ref, matches|
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2018-03-17 18:26:18 +05:30
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parent_path = if parent_type == :group
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full_group_path(namespace_ref)
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else
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full_project_path(namespace_ref, project_ref)
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end
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2015-12-23 02:04:40 +05:30
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2018-03-17 18:26:18 +05:30
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parent = from_ref_cached(parent_path)
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if parent
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2017-09-10 17:25:29 +05:30
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object =
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if link_reference
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2018-03-17 18:26:18 +05:30
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find_object_from_link_cached(parent, id)
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2017-09-10 17:25:29 +05:30
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else
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2018-03-17 18:26:18 +05:30
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find_object_cached(parent, id)
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2017-09-10 17:25:29 +05:30
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end
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end
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if object
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2018-05-09 12:01:36 +05:30
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title = object_link_title(object, matches)
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2015-12-23 02:04:40 +05:30
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klass = reference_class(object_sym)
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2019-07-07 11:18:12 +05:30
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data_attributes = data_attributes_for(link_content || match, parent, object,
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link_content: !!link_content,
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link_reference: link_reference)
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data = data_attribute(data_attributes)
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2015-12-23 02:04:40 +05:30
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2017-08-17 22:00:37 +05:30
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url =
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if matches.names.include?("url") && matches[:url]
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matches[:url]
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else
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2018-03-17 18:26:18 +05:30
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url_for_object_cached(object, parent)
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2017-08-17 22:00:37 +05:30
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end
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2015-12-23 02:04:40 +05:30
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2017-08-17 22:00:37 +05:30
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content = link_content || object_link_text(object, matches)
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2015-12-23 02:04:40 +05:30
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2019-07-07 11:18:12 +05:30
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link = %(<a href="#{url}" #{data}
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title="#{escape_once(title)}"
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class="#{klass}">#{content}</a>)
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wrap_link(link, object)
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2015-12-23 02:04:40 +05:30
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else
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match
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end
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end
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end
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2019-07-07 11:18:12 +05:30
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def wrap_link(link, object)
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link
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end
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2018-05-09 12:01:36 +05:30
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def data_attributes_for(text, parent, object, link_content: false, link_reference: false)
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object_parent_type = parent.is_a?(Group) ? :group : :project
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2019-07-07 11:18:12 +05:30
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{
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2020-07-02 01:45:43 +05:30
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original: escape_html_entities(text),
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2018-05-09 12:01:36 +05:30
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link: link_content,
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link_reference: link_reference,
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object_parent_type => parent.id,
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object_sym => object.id
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2019-07-07 11:18:12 +05:30
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}
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2016-08-24 12:49:21 +05:30
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end
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2015-12-23 02:04:40 +05:30
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def object_link_text_extras(object, matches)
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extras = []
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if matches.names.include?("anchor") && matches[:anchor] && matches[:anchor] =~ /\A\#note_(\d+)\z/
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extras << "comment #{$1}"
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end
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2018-05-09 12:01:36 +05:30
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extension = matches[:extension] if matches.names.include?("extension")
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extras << extension if extension
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2015-12-23 02:04:40 +05:30
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extras
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end
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2018-05-09 12:01:36 +05:30
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def object_link_title(object, matches)
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2016-09-29 09:46:39 +05:30
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object.title
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2015-12-23 02:04:40 +05:30
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end
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2016-01-14 18:37:52 +05:30
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def object_link_text(object, matches)
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2018-03-17 18:26:18 +05:30
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parent = context[:project] || context[:group]
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text = object.reference_link_text(parent)
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2016-01-14 18:37:52 +05:30
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extras = object_link_text_extras(object, matches)
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text += " (#{extras.join(", ")})" if extras.any?
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text
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end
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2016-06-02 11:05:42 +05:30
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2016-06-22 15:30:34 +05:30
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# Returns a Hash containing all object references (e.g. issue IDs) per the
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# project they belong to.
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2018-03-17 18:26:18 +05:30
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def references_per_parent
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@references_per ||= {}
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@references_per[parent_type] ||= begin
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2016-06-22 15:30:34 +05:30
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refs = Hash.new { |hash, key| hash[key] = Set.new }
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2020-03-13 15:44:24 +05:30
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regex = [
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object_class.link_reference_pattern,
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object_class.reference_pattern
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].compact.reduce { |a, b| Regexp.union(a, b) }
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2016-06-22 15:30:34 +05:30
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nodes.each do |node|
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node.to_html.scan(regex) do
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2018-03-17 18:26:18 +05:30
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path = if parent_type == :project
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full_project_path($~[:namespace], $~[:project])
|
|
|
|
else
|
|
|
|
full_group_path($~[:group])
|
|
|
|
end
|
|
|
|
|
2020-03-13 15:44:24 +05:30
|
|
|
if ident = identifier($~)
|
|
|
|
refs[path] << ident
|
|
|
|
end
|
2016-06-22 15:30:34 +05:30
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
refs
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
# Returns a Hash containing referenced projects grouped per their full
|
|
|
|
# path.
|
2018-03-17 18:26:18 +05:30
|
|
|
def parent_per_reference
|
|
|
|
@per_reference ||= {}
|
|
|
|
|
|
|
|
@per_reference[parent_type] ||= begin
|
2016-06-22 15:30:34 +05:30
|
|
|
refs = Set.new
|
|
|
|
|
2018-03-17 18:26:18 +05:30
|
|
|
references_per_parent.each do |ref, _|
|
|
|
|
refs << ref
|
2016-06-22 15:30:34 +05:30
|
|
|
end
|
|
|
|
|
2018-03-17 18:26:18 +05:30
|
|
|
find_for_paths(refs.to_a).index_by(&:full_path)
|
2016-06-22 15:30:34 +05:30
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2018-03-17 18:26:18 +05:30
|
|
|
def relation_for_paths(paths)
|
|
|
|
klass = parent_type.to_s.camelize.constantize
|
|
|
|
result = klass.where_full_path_in(paths)
|
|
|
|
return result if parent_type == :group
|
|
|
|
|
|
|
|
result.includes(:namespace) if parent_type == :project
|
2016-06-22 15:30:34 +05:30
|
|
|
end
|
|
|
|
|
2016-11-03 12:29:30 +05:30
|
|
|
# Returns projects for the given paths.
|
2018-03-17 18:26:18 +05:30
|
|
|
def find_for_paths(paths)
|
2018-12-05 23:21:45 +05:30
|
|
|
if Gitlab::SafeRequestStore.active?
|
2018-03-17 18:26:18 +05:30
|
|
|
cache = refs_cache
|
2017-08-17 22:00:37 +05:30
|
|
|
to_query = paths - cache.keys
|
2016-11-03 12:29:30 +05:30
|
|
|
|
|
|
|
unless to_query.empty?
|
2018-03-17 18:26:18 +05:30
|
|
|
records = relation_for_paths(to_query)
|
2017-08-17 22:00:37 +05:30
|
|
|
|
|
|
|
found = []
|
2018-03-17 18:26:18 +05:30
|
|
|
records.each do |record|
|
|
|
|
ref = record.full_path
|
|
|
|
get_or_set_cache(cache, ref) { record }
|
2017-08-17 22:00:37 +05:30
|
|
|
found << ref
|
|
|
|
end
|
|
|
|
|
|
|
|
not_found = to_query - found
|
|
|
|
not_found.each do |ref|
|
|
|
|
get_or_set_cache(cache, ref) { nil }
|
2016-11-03 12:29:30 +05:30
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2017-08-17 22:00:37 +05:30
|
|
|
cache.slice(*paths).values.compact
|
2016-11-03 12:29:30 +05:30
|
|
|
else
|
2018-03-17 18:26:18 +05:30
|
|
|
relation_for_paths(paths)
|
2016-11-03 12:29:30 +05:30
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2018-03-17 18:26:18 +05:30
|
|
|
def current_parent_path
|
|
|
|
@current_parent_path ||= parent&.full_path
|
2016-06-22 15:30:34 +05:30
|
|
|
end
|
|
|
|
|
2017-08-17 22:00:37 +05:30
|
|
|
def current_project_namespace_path
|
2018-03-17 18:26:18 +05:30
|
|
|
@current_project_namespace_path ||= project&.namespace&.full_path
|
2017-08-17 22:00:37 +05:30
|
|
|
end
|
|
|
|
|
2019-10-12 21:52:04 +05:30
|
|
|
def records_per_parent
|
|
|
|
@_records_per_project ||= {}
|
|
|
|
|
|
|
|
@_records_per_project[object_class.to_s.underscore] ||= begin
|
|
|
|
hash = Hash.new { |h, k| h[k] = {} }
|
|
|
|
|
|
|
|
parent_per_reference.each do |path, parent|
|
|
|
|
record_ids = references_per_parent[path]
|
|
|
|
|
|
|
|
parent_records(parent, record_ids).each do |record|
|
|
|
|
hash[parent][record_identifier(record)] = record
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
hash
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2016-06-02 11:05:42 +05:30
|
|
|
private
|
|
|
|
|
2017-08-17 22:00:37 +05:30
|
|
|
def full_project_path(namespace, project_ref)
|
2018-03-17 18:26:18 +05:30
|
|
|
return current_parent_path unless project_ref
|
2017-08-17 22:00:37 +05:30
|
|
|
|
|
|
|
namespace_ref = namespace || current_project_namespace_path
|
|
|
|
"#{namespace_ref}/#{project_ref}"
|
|
|
|
end
|
|
|
|
|
2018-03-17 18:26:18 +05:30
|
|
|
def refs_cache
|
2018-12-05 23:21:45 +05:30
|
|
|
Gitlab::SafeRequestStore["banzai_#{parent_type}_refs".to_sym] ||= {}
|
2016-06-02 11:05:42 +05:30
|
|
|
end
|
|
|
|
|
2018-03-17 18:26:18 +05:30
|
|
|
def parent_type
|
|
|
|
:project
|
2016-06-02 11:05:42 +05:30
|
|
|
end
|
|
|
|
|
2018-03-17 18:26:18 +05:30
|
|
|
def parent
|
|
|
|
parent_type == :project ? project : group
|
2016-06-02 11:05:42 +05:30
|
|
|
end
|
2018-05-09 12:01:36 +05:30
|
|
|
|
|
|
|
def full_group_path(group_ref)
|
|
|
|
return current_parent_path unless group_ref
|
|
|
|
|
|
|
|
group_ref
|
|
|
|
end
|
2019-09-04 21:01:54 +05:30
|
|
|
|
|
|
|
def unescape_html_entities(text)
|
|
|
|
CGI.unescapeHTML(text.to_s)
|
|
|
|
end
|
|
|
|
|
|
|
|
def escape_html_entities(text)
|
|
|
|
CGI.escapeHTML(text.to_s)
|
|
|
|
end
|
|
|
|
|
|
|
|
def escape_with_placeholders(text, placeholder_data)
|
|
|
|
escaped = escape_html_entities(text)
|
|
|
|
|
|
|
|
escaped.gsub(REFERENCE_PLACEHOLDER_PATTERN) do |match|
|
|
|
|
placeholder_data[$1.to_i]
|
|
|
|
end
|
|
|
|
end
|
2015-12-23 02:04:40 +05:30
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|
2019-12-04 20:38:33 +05:30
|
|
|
|
|
|
|
Banzai::Filter::AbstractReferenceFilter.prepend_if_ee('EE::Banzai::Filter::AbstractReferenceFilter')
|