Class: String

Inherits:
Object
  • Object
show all
Defined in:
lib/searchlink/semver.rb,
lib/searchlink/string.rb,
lib/searchlink/curl/html.rb,
lib/searchlink/searches/hook.rb

Overview

Hookmark String helpers

Instance Method Summary collapse

Instance Method Details

#clean ⇒ String

Remove newlines, escape quotes, and remove Google Analytics strings

Returns:

  • (String) —

    cleaned URL/String



118
119
120
121
122
123
124
 
# File 'lib/searchlink/string.rb', line 118

def clean
  gsub(/\n+/, " ")
    .gsub(/"/, "&quot")
    .gsub(/\|/, "-")
    .gsub(/([&?]utm_[scm].+=[^&\s!,.)\]]++?)+(&.*)/, '\2')
    .sub(/\?&/, "").strip
end

#close_punctuation ⇒ String

Complete incomplete punctuation pairs

Returns:

  • (String) —

    string with all punctuation properly paired



186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
 
# File 'lib/searchlink/string.rb', line 186

def close_punctuation
  return self unless self =~ /[“‘\[(<]/

  words = split(/\s+/)

  punct_chars = {
    "“" => "”",
    "‘" => "’",
    "[" => "]",
    "(" => ")",
    "<" => ">"
  }

  left_punct = []

  words.each do |w|
    punct_chars.each do |k, v|
      left_punct.push(k) if w =~ /#{Regexp.escape(k)}/
      left_punct.delete_at(left_punct.rindex(k)) if w =~ /#{Regexp.escape(v)}/
    end
  end

  tail = ""
  left_punct.reverse.each { |c| tail += punct_chars[c] }

  gsub(/[^a-z)\]’”.…]+$/i, "...").strip + tail
end

#close_punctuation! ⇒ Object

Destructive punctuation close

See Also:



176
177
178
 
# File 'lib/searchlink/string.rb', line 176

def close_punctuation!
  replace close_punctuation
end

#code_indent ⇒ String

Indent each line of string with 4 spaces

Returns:

  • (String) —

    indented string



488
489
490
 
# File 'lib/searchlink/string.rb', line 488

def code_indent
  split(/\n/).map { |l| "    #{l}" }.join("\n")
end

#distance(t) ⇒ Object 



400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
 
# File 'lib/searchlink/string.rb', line 400

def distance(t)
  s = dup
  m = s.length
  n = t.length
  return m if n.zero?
  return n if m.zero?

  d = Array.new(m + 1) { Array.new(n + 1) }

  (0..m).each { |i| d[i][0] = i }
  (0..n).each { |j| d[0][j] = j }
  (1..n).each do |j|
    (1..m).each do |i|
      d[i][j] = if s[i - 1] == t[j - 1] # adjust index into string
                  d[i - 1][j - 1]       # no operation required
                else
                  [d[i - 1][j] + 1, # deletion
                   d[i][j - 1] + 1, # insertion
                   d[i - 1][j - 1] + 1 # substitution
].min
                end
    end
  end
  d[m][n]
end

#fix_gist_file ⇒ description_of_the_return_value

Convert file-myfile-rb to myfile.rb

Returns:

  • (description_of_the_return_value) 


93
94
95
 
# File 'lib/searchlink/string.rb', line 93

def fix_gist_file
  sub(/^file-/, "").sub(/-([^\-]+)$/, '.\1')
end

#matches_all(terms) ⇒ Object

Test that self matches every word in terms

Parameters:

  • terms (String) —

    The terms to test



463
464
465
466
467
 
# File 'lib/searchlink/string.rb', line 463

def matches_all(terms)
  rx_terms = terms.is_a?(String) ? terms.to_rx_array : terms
  rx_terms.each { |rx| return false unless gsub(/[^a-z0-9 ]/i, "") =~ rx }
  true
end

#matches_any(terms) ⇒ Object

Test if self contains any of terms

Parameters:

  • terms (String) —

    The terms to test



452
453
454
455
456
 
# File 'lib/searchlink/string.rb', line 452

def matches_any(terms)
  rx_terms = terms.is_a?(String) ? terms.to_rx_array : terms
  rx_terms.each { |rx| return true if gsub(/[^a-z0-9 ]/i, "") =~ rx }
  false
end

#matches_exact(string) ⇒ Object

Test if self contains exactl match for string (case insensitive)

Parameters:

  • string (String) —

    The string to match



431
432
433
434
 
# File 'lib/searchlink/string.rb', line 431

def matches_exact(string)
  comp = gsub(/[^a-z0-9 ]/i, "")
  comp =~ /\b#{string.gsub(/[^a-z0-9 ]/i, '').split(/ +/).map { |s| Regexp.escape(s) }.join(' +')}/i
end

#matches_fuzzy(terms, separator: " ", start_word: true, threshhold: 5) ⇒ Object 



386
387
388
389
390
391
392
393
394
395
396
397
398
 
# File 'lib/searchlink/string.rb', line 386

def matches_fuzzy(terms, separator: " ", start_word: true, threshhold: 5)
  sources = split(/(#{separator})+/)
  words = terms.split(/(#{separator})+/)
  matches = 0
  sources.each do |src|
    words.each do |term|
      d = src.distance(term)
      matches += 1 if d <= threshhold
    end
  end

  ((matches / words.count.to_f) * 10).round(3)
end

#matches_none(terms) ⇒ Object

Test that self does not contain any of terms

Parameters:

  • terms (String) —

    The terms to test



441
442
443
444
445
 
# File 'lib/searchlink/string.rb', line 441

def matches_none(terms)
  rx_terms = terms.is_a?(String) ? terms.to_rx_array : terms
  rx_terms.each { |rx| return false if gsub(/[^a-z0-9 ]/i, "") =~ rx }
  true
end

#matches_score(terms, separator: " ", start_word: true) ⇒ Object

Score string based on number of matches, 0 - 10

Parameters:

  • terms (String) —

    The terms to match

  • separator (String) (defaults to: " ") —

    The word separator

  • start_word (Boolean) (defaults to: true) —

    Require match to be at beginning of word



373
374
375
376
377
378
379
380
381
382
383
384
 
# File 'lib/searchlink/string.rb', line 373

def matches_score(terms, separator: " ", start_word: true)
  matched = 0
  regexes = terms.to_rx_array(separator: separator, start_word: start_word)

  regexes.each do |rx|
    matched += 1 if self =~ rx
  end

  return 0 if matched.zero?

  ((matched / regexes.count.to_f) * 10).round(3)
end

#nil_if_missing ⇒ Nil, String

Test an AppleScript response, substituting nil for ‘Missing Value’

Returns:

  • (Nil, String) —

    nil if string is “missing value”



358
359
360
361
362
 
# File 'lib/searchlink/string.rb', line 358

def nil_if_missing
  return nil if self =~ /missing value/

  self
end

#normalize_trigger ⇒ String

Adds ?: to any parentheticals in a regular expression to avoid match groups

Returns:

  • (String) —

    modified regular expression



34
35
36
 
# File 'lib/searchlink/string.rb', line 34

def normalize_trigger
  gsub(/\((?!\?:)/, "(?:").gsub(/(^(\^|\\A)|(\$|\\Z)$)/, "").downcase
end

#parse_flags ⇒ Object

parse command line flags into long options



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
 
# File 'lib/searchlink/string.rb', line 56

def parse_flags
  gsub(/(\+\+|--)([dirtvs]+)\b/) do
    m = Regexp.last_match
    bool = m[1] == "++" ? "" : "no-"
    output = " "
    m[2].split("").each do |arg|
      output += case arg
                when "d"
                  "--#{bool}debug "
                when "i"
                  "--#{bool}inline "
                when "r"
                  "--#{bool}prefix_random "
                when "t"
                  "--#{bool}include_titles "
                when "v"
                  "--#{bool}validate_links "
                when "s"
                  "--#{bool}remove_seo "
                else
                  ""
                end
    end

    output
  end.gsub(/ +/, " ")
end

#parse_flags! ⇒ Object 



84
85
86
 
# File 'lib/searchlink/string.rb', line 84

def parse_flags!
  replace parse_flags
end

#path_elements ⇒ Array

Extract the most relevant portions from a URL path

Returns:

  • (Array) —

    array of relevant path elements



158
159
160
161
162
163
164
165
166
167
168
169
 
# File 'lib/searchlink/string.rb', line 158

def path_elements
  path = url_path
  # force trailing slash
  path.sub!(%r{/?$}, "/")
  # remove last path element
  path.sub!(%r{/[^/]+[.\-][^/]+/$}, "")
  # remove starting/ending slashes
  path.gsub!(%r{(^/|/$)}, "")
  # split at slashes, delete sections that are shorter
  # than 5 characters or only consist of numbers
  path.split(%r{/}).delete_if { |section| section =~ /^\d+$/ || section.length < 5 }
end

#remove_entities ⇒ Object 



6
7
8
 
# File 'lib/searchlink/curl/html.rb', line 6

def remove_entities
  gsub(/&nbsp;/, " ")
end

#remove_protocol ⇒ String

Remove the protocol from a URL

Returns:

  • (String) —

    just hostname and path of URL



141
142
143
 
# File 'lib/searchlink/string.rb', line 141

def remove_protocol
  sub(%r{^(https?|s?ftp|file)://}, "")
end

#remove_seo(url) ⇒ String

Remove SEO elements from a title

Parameters:

  • url —

    The url of the page from which the title came

Returns:



233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
 
# File 'lib/searchlink/string.rb', line 233

def remove_seo(url)
  title = dup
  url = URI.parse(url)
  host = url.hostname
  unless host
    return self unless SL.config["debug"]

    SL.add_error("Invalid URL", "Could not remove SEO for #{url}")
    return self

  end

  path = url.path
  root_page = path =~ %r{^/?$} ? true : false

  title.gsub!(/\s*(&ndash;|&mdash;)\s*/, " - ")
  title.gsub!(/&[lr]dquo;/, '"')
  title.gsub!(/&[lr]dquo;/, "'")
  title.gsub!(/&#8211;/, " — ")
  title = CGI.unescapeHTML(title)
  title.gsub!(/ +/, " ")

  seo_title_separators = %w[| » « — – - · :]

  begin
    re_parts = []

    host_parts = host.sub(/(?:www\.)?(.*?)\.[^.]+$/, '\1').split(/\./).delete_if { |p| p.length < 3 }
    h_re = !host_parts.empty? ? host_parts.map { |seg| seg.downcase.split(//).join(".?") }.join("|") : ""
    re_parts.push(h_re) unless h_re.empty?

    # p_re = path.path_elements.map{|seg| seg.downcase.split(//).join('.?') }.join('|')
    # re_parts.push(p_re) if p_re.length > 0

    site_re = "(#{re_parts.join('|')})"

    dead_switch = 0

    while title.downcase.gsub(/[^a-z]/i, "") =~ /#{site_re}/i

      break if dead_switch > 5

      seo_title_separators.each_with_index do |sep, i|
        parts = title.split(/ *#{Regexp.escape(sep)} +/)

        next if parts.length == 1

        remaining_separators = seo_title_separators[i..-1].map { |s| Regexp.escape(s) }.join("")
        seps = Regexp.new("^[^#{remaining_separators}]+$")

        longest = parts.longest_element.strip

        unless parts.empty?
          parts.delete_if do |pt|
            compressed = pt.strip.downcase.gsub(/[^a-z]/i, "")
            compressed =~ /#{site_re}/ && pt =~ seps ? !root_page : false
          end
        end

        title = if parts.empty?
                  longest
                elsif parts.length < 2
                  parts.join(sep)
                elsif parts.length > 2
                  parts.longest_element.strip
                else
                  parts.join(sep)
                end
      end
      dead_switch += 1
    end
  rescue StandardError => e
    return self unless SL.config["debug"]

    SL.add_error("Error SEO processing title for #{url}", e)
    return self
  end

  seps = Regexp.new(" *[#{seo_title_separators.map { |s| Regexp.escape(s) }.join('')}] +")
  if title =~ seps
    seo_parts = title.split(seps)
    title = seo_parts.longest_element.strip if seo_parts.length.positive?
  end

  title && title.length > 5 ? title.gsub(/\s+/, " ") : CGI.unescapeHTML(self)
end

#remove_seo!(url) ⇒ Object

Destructively remove SEO elements from a title

Parameters:

  • url —

    The url of the page from which the title came

See Also:



222
223
224
 
# File 'lib/searchlink/string.rb', line 222

def remove_seo!(url)
  replace remove_seo(url)
end

#scrubup ⇒ Object

Scrub invalid characters from string



7
8
9
 
# File 'lib/searchlink/string.rb', line 7

def scrubup
  encode("utf-16", invalid: :replace).encode("utf-8").gsub(/\u00A0/, " ")
end

#scrubup! ⇒ Object

See Also:

  • #scrub


12
13
14
 
# File 'lib/searchlink/string.rb', line 12

def scrubup!
  replace scrub
end

#shorten_path ⇒ Object

Shorten path by adding ~ for home directory



495
496
497
498
 
# File 'lib/searchlink/string.rb', line 495

def shorten_path
  home_directory = ENV["HOME"]
  sub(home_directory, "~")
end

#slugify ⇒ String

Turn a string into a slug, removing spaces and non-alphanumeric characters

Returns:

  • (String) —

    slugified string



102
103
104
 
# File 'lib/searchlink/string.rb', line 102

def slugify
  downcase.gsub(/[^a-z0-9_]/i, "-").gsub(/-+/, "-").sub(/-?$/, "")
end

#slugify! ⇒ Object

Destructive slugify

See Also:



108
109
110
 
# File 'lib/searchlink/string.rb', line 108

def slugify!
  replace slugify
end

#spacer ⇒ String

Generate a spacer based on character widths for help dialog display

Returns:

  • (String) —

    string containing tabs



43
44
45
46
47
48
49
50
51
52
53
 
# File 'lib/searchlink/string.rb', line 43

def spacer
  len = length
  scan(/[mwv]/).each { len += 1 }
  scan(/t/).each { len -= 1 }
  case len
  when 0..3
    "\t\t"
  when 4..12
    " \t"
  end
end

#split_hook ⇒ Object 



8
9
10
11
12
13
14
15
 
# File 'lib/searchlink/searches/hook.rb', line 8

def split_hook
  elements = split(/\|\|/)
  {
    name: elements[0].nil_if_missing,
    url: elements[1].nil_if_missing,
    path: elements[2].nil_if_missing
  }
end

#split_hooks ⇒ Object 



17
18
19
 
# File 'lib/searchlink/searches/hook.rb', line 17

def split_hooks
  split(/\^\^/).map(&:split_hook)
end

#to_am ⇒ String

convert itunes to apple music link

Returns:

  • (String) —

    apple music link



129
130
131
132
133
134
 
# File 'lib/searchlink/string.rb', line 129

def to_am
  input = dup
  input.sub!(%r{/itunes\.apple\.com}, "geo.itunes.apple.com")
  append = input =~ %r{\?[^/]+=} ? "&app=music" : "?app=music"
  input + append
end

#to_rx_array(separator: " ", start_word: true) ⇒ Array

Break a string into an array of Regexps

Parameters:

  • separator (String) (defaults to: " ") —

    The word separator

  • start_word (Boolean) (defaults to: true) —

    Require matches at start of word

Returns:

  • (Array) —

    array of regular expressions



478
479
480
481
482
 
# File 'lib/searchlink/string.rb', line 478

def to_rx_array(separator: " ", start_word: true)
  bound = start_word ? '\b' : ""
  str = gsub(/(#{separator})+/, separator)
  str.split(/#{separator}/).map { |arg| /#{bound}#{arg.gsub(/[^a-z0-9]/i, '.?')}/i }
end

#truncate(max) ⇒ Object

Truncate string to given length, preserving words

Parameters:

  • max (Number) —

    The maximum length



336
337
338
339
340
341
342
343
344
345
346
347
348
349
 
# File 'lib/searchlink/string.rb', line 336

def truncate(max)
  return self if length < max

  trunc_title = []

  words = split(/\s+/)
  words.each do |word|
    break unless trunc_title.join(" ").length.close_punctuation + word.length <= max

    trunc_title << word
  end

  trunc_title.empty? ? words[0] : trunc_title.join(" ")
end

#truncate!(max) ⇒ Object

Truncate in place

Parameters:

  • max (Number) —

    The maximum length

See Also:



327
328
329
 
# File 'lib/searchlink/string.rb', line 327

def truncate!(max)
  replace truncate(max)
end

#url_decode ⇒ Object 



24
25
26
 
# File 'lib/searchlink/string.rb', line 24

def url_decode
  CGI.unescape(self)
end

#url_encode ⇒ String

URL Encode string

Returns:

  • (String) —

    url encoded string



20
21
22
 
# File 'lib/searchlink/string.rb', line 20

def url_encode
  ERB::Util.url_encode(gsub(/%22/, '"'))
end

#url_path ⇒ String

Return just the path of a URL

Returns:



150
151
152
 
# File 'lib/searchlink/string.rb', line 150

def url_path
  URI.parse(self).path
end

#valid_version? ⇒ Boolean

Test if given string is a valid semantic version number with major, minor and patch (and optionally pre)

Returns:

  • (Boolean) —

    string is semantic version number



39
40
41
42
 
# File 'lib/searchlink/semver.rb', line 39

def valid_version?
  pattern = /^\d+\.\d+\.\d+(-?([^0-9]+\d*))?$/
  self =~ pattern ? true : false
end