1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
# frozen_string_literal: true
module Extractor
MAX_DOMAIN_LENGTH = 253
extend Twitter::TwitterText::Extractor
module_function
def extract_entities_with_indices(text, options = {}, &block)
entities = begin
extract_urls_with_indices(text, options) +
extract_hashtags_with_indices(text, check_url_overlap: false) +
extract_mentions_or_lists_with_indices(text) +
extract_extra_uris_with_indices(text)
end
return [] if entities.empty?
entities = remove_overlapping_entities(entities)
entities.each(&block) if block
entities
end
def extract_mentions_or_lists_with_indices(text)
return [] unless text && Twitter::TwitterText::Regex[:at_signs].match?(text)
possible_entries = []
text.scan(Account::MENTION_RE) do |screen_name, _|
match_data = $LAST_MATCH_INFO
after = ::Regexp.last_match.post_match
unless Twitter::TwitterText::Regex[:end_mention_match].match?(after)
_, domain = screen_name.split('@')
next if domain.present? && domain.length > MAX_DOMAIN_LENGTH
start_position = match_data.char_begin(1) - 1
end_position = match_data.char_end(1)
possible_entries << {
screen_name: screen_name,
indices: [start_position, end_position],
}
end
end
if block_given?
possible_entries.each do |mention|
yield mention[:screen_name], mention[:indices].first, mention[:indices].last
end
end
possible_entries
end
def extract_hashtags_with_indices(text, _options = {})
return [] unless text&.index('#')
possible_entries = []
text.scan(Tag::HASHTAG_RE) do |hash_text, _|
match_data = $LAST_MATCH_INFO
start_position = match_data.char_begin(1) - 1
end_position = match_data.char_end(1)
after = ::Regexp.last_match.post_match
if %r{\A://}.match?(after)
hash_text.match(/(.+)(https?\Z)/) do |matched|
hash_text = matched[1]
end_position -= matched[2].codepoint_length
end
end
possible_entries << {
hashtag: hash_text,
indices: [start_position, end_position],
}
end
if block_given?
possible_entries.each do |tag|
yield tag[:hashtag], tag[:indices].first, tag[:indices].last
end
end
possible_entries
end
def extract_cashtags_with_indices(_text)
[]
end
def extract_extra_uris_with_indices(text)
return [] unless text&.index(':')
possible_entries = []
text.scan(Twitter::TwitterText::Regex[:valid_extended_uri]) do
valid_uri_match_data = $LAST_MATCH_INFO
start_position = valid_uri_match_data.char_begin(3)
end_position = valid_uri_match_data.char_end(3)
possible_entries << {
url: valid_uri_match_data[3],
indices: [start_position, end_position],
}
end
if block_given?
possible_entries.each do |url|
yield url[:url], url[:indices].first, url[:indices].last
end
end
possible_entries
end
end
|
