Class: EmailReplyTrimmer
- Inherits:
-
Object
- Object
- EmailReplyTrimmer
- Defined in:
- lib/email_reply_trimmer.rb
Constant Summary collapse
- VERSION =
"0.1.12"
- DELIMITER =
"d"
- EMBEDDED =
"b"
- EMPTY =
"e"
- EMAIL_HEADER =
"h"
- QUOTE =
"q"
- SIGNATURE =
"s"
- TEXT =
"t"
Class Method Summary collapse
- .extract_embedded_email(text) ⇒ Object
- .identify_line_content(line) ⇒ Object
- .trim(text, split = false) ⇒ Object
Class Method Details
.extract_embedded_email(text) ⇒ Object
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# File 'lib/email_reply_trimmer.rb', line 133 def self.(text) return if text.nil? || text =~ /\A[[:space:]]*\z/m # do some cleanup preprocess!(text) # from now on, we'll work on a line-by-line basis lines = text.split("\n") # identify content of each lines pattern = lines.map { |l| identify_line_content(l) }.join if index = pattern =~ /(?:h[eqd]*?){3,}[tq]/ = lines[index..-1].join("\n").strip before = lines[0...(pattern[0...index] =~ /e*(b[eqd]*|b*[ed]*)$/)].join("\n").strip return [, before] end end |
.identify_line_content(line) ⇒ Object
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# File 'lib/email_reply_trimmer.rb', line 19 def self.identify_line_content(line) return EMPTY if EmptyLineMatcher.match? line return DELIMITER if DelimiterMatcher.match? line return SIGNATURE if SignatureMatcher.match? line return EMBEDDED if EmbeddedEmailMatcher.match? line return EMAIL_HEADER if EmailHeaderMatcher.match? line return QUOTE if QuoteMatcher.match? line return TEXT end |
.trim(text, split = false) ⇒ Object
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# File 'lib/email_reply_trimmer.rb', line 29 def self.trim(text, split = false) return if text.nil? || text =~ /\A[[:space:]]*\z/m # do some cleanup preprocess!(text) # from now on, we'll work on a line-by-line basis lines = text.split("\n") lines_dup = lines.dup # identify content of each lines pattern = lines.map { |l| identify_line_content(l) }.join # remove everything after the first delimiter if pattern =~ /d/ index = pattern =~ /d/ pattern = pattern[0...index] lines = lines[0...index] end # remove all mobile signatures while pattern =~ /s/ index = pattern =~ /s/ pattern.slice!(index) lines.slice!(index) end # when the reply is at the end of the email if pattern =~ /^(b[^t]+)*b[bqeh]+t[et]*$/ index = pattern =~ /t[et]*$/ pattern = "" lines = lines[index..-1] end # if there is an embedded email marker, not followed by a quote # then take everything up to that marker if pattern =~ /te*b[^q]*$/ index = pattern =~ /te*b[^q]*$/ pattern = pattern[0..index] lines = lines[0..index] end # if there is an embedded email marker, followed by a huge quote # then take everything up to that marker if pattern =~ /te*b[eqbh]*([te]*)$/ && $1.count("t") < 7 index = pattern =~ /te*b[eqbh]*[te]*$/ pattern = pattern[0..index] lines = lines[0..index] end # if there is some text before a huge quote ending the email, # then remove the quote if pattern =~ /te*[qbe]+$/ index = pattern =~ /te*[qbe]+$/ pattern = pattern[0..index] lines = lines[0..index] end # if there still are some embedded email markers, just remove them while pattern =~ /b/ index = pattern =~ /b/ pattern.slice!(index) lines.slice!(index) end # fix email headers when they span over multiple lines if pattern =~ /h+[hte]+h+e/ index = pattern =~ /h+[hte]+h+e/ size = pattern[/h+[hte]+h+e/].size size.times.each { |s| pattern[index + s] = EMAIL_HEADER } end # if there are at least 3 consecutive email headers, # take everything up to these headers if pattern =~ /t[eq]*h{3,}/ index = pattern =~ /t[eq]*h{3,}/ pattern = pattern[0..index] lines = lines[0..index] end # if there still are some email headers, just remove them while pattern =~ /h/ index = pattern =~ /h/ pattern.slice!(index) lines.slice!(index) end # remove trailing quotes when there's at least one line of text if pattern =~ /t/ && pattern =~ /[eq]+$/ index = pattern =~ /[eq]+$/ pattern = pattern[0...index] lines = lines[0...index] end # results trimmed = lines.join("\n").strip if split [trimmed, compute_elided(lines_dup, lines)] else trimmed end end |