v0.6 Further attempt to get this reverse dobule encoding right now

This commit is contained in:
David Sainty 2024-09-09 20:30:15 +10:00
parent 3331675fb2
commit 5f3708b307

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@ -1,7 +1,7 @@
# Federated Computer, Inc. # Federated Computer, Inc.
# David Sainty <saint@federated.computer> 2024 A.D. # David Sainty <saint@federated.computer> 2024 A.D.
# Gossamer Threads to Discourse -- Correct Encoding # Gossamer Threads to Discourse -- Correct Encoding
# v0.4 Debugging # v0.6 Further attempt to get this reverse dobule encoding right now
require 'mysql2' require 'mysql2'
require 'active_record' require 'active_record'
@ -24,18 +24,43 @@ class GossamerForumsCorrectEncoding < ImportScripts::Base
) )
rescue Mysql2::Error => e rescue Mysql2::Error => e
puts "Error connecting to MySQL: #{e.message}" puts "Error connecting to MySQL: #{e.message}"
puts e.backtrace.join("\n") # Print the full stack trace
exit 1 exit 1
end end
@batch_size = 1000 # Number of posts to process in each batch @batch_size = 1000 # Number of posts to process in each batch
end end
# Method to detect and fix text encoding # Method to detect and fix text encoding
def fix_text_encoding(raw_content) def fix_text_encoding(broken_content)
# Detect encoding # Step 1: Try to detect encoding of the corrupted (double-encoded) content
detection = CharlockHolmes::EncodingDetector.detect(raw_content) detection = CharlockHolmes::EncodingDetector.detect(broken_content)
original_encoding = detection[:encoding] original_encoding = detection[:encoding]
puts "Original encoding detected: #{original_encoding}" puts "Original encoding detected: #{original_encoding}"
# Step 2: First decode the double-encoded content
begin
# Convert the content assuming it was double-encoded, so decode twice
# First, convert from the detected encoding (ISO-8859-1 or windows-1252) to UTF-8
first_pass = CharlockHolmes::Converter.convert(broken_content, original_encoding, 'UTF-8')
# Step 3: Now re-interpret that output as if it's broken UTF-8 and convert it back to UTF-8
fixed_content = CharlockHolmes::Converter.convert(first_pass, 'UTF-8', 'UTF-8')
rescue => e
puts "Error during encoding fix: #{e.message}"
puts e.backtrace.join("\n") # Print the full stack trace
fixed_content = broken_content # Fall back to the broken content if decoding fails
end
return fixed_content
end
# # Detect encoding
# detection = CharlockHolmes::EncodingDetector.detect(raw_content)
# original_encoding = detection[:encoding]
# puts "Original encoding detected: #{original_encoding}"
# # Force the encoding to the detected one, then covnert to UTF-8 # # Force the encoding to the detected one, then covnert to UTF-8
# if original_encoding == 'ISO-8859-1' || original_encoding == 'windows-1252' # if original_encoding == 'ISO-8859-1' || original_encoding == 'windows-1252'
# # For Windows-1252 or ISO-8859-1, force the encoding and convert to UTF-8 # # For Windows-1252 or ISO-8859-1, force the encoding and convert to UTF-8
@ -46,20 +71,20 @@ class GossamerForumsCorrectEncoding < ImportScripts::Base
# text.encode('UTF-8', original_encoding, invalid: :replace, undef: :replace, replace: '?') # text.encode('UTF-8', original_encoding, invalid: :replace, undef: :replace, replace: '?')
# end # end
if original_encoding # if original_encoding
begin # begin
decoded_content = CharlockHolmes::Converter.convert(raw_content, original_encoding, 'UTF-8') # decoded_content = CharlockHolmes::Converter.convert(raw_content, original_encoding, 'UTF-8')
rescue => e # rescue => e
puts "Error during encoding conversion: #{e.message}" # puts "Error during encoding conversion: #{e.message}"
decoded_content = raw_content # Fall back to raw content if decoding fails # decoded_content = raw_content # Fall back to raw content if decoding fails
end # end
else # else
decoded_content = raw_content # Fallback if encoding detection fails # decoded_content = raw_content # Fallback if encoding detection fails
end # end
#
# Step 3: Ensure the content is now correctly in UTF-8 (no need to encode again) # # Step 3: Ensure the content is now correctly in UTF-8 (no need to encode again)
return decoded_content # return decoded_content
end # end
# rescue StandardError => e # rescue StandardError => e
# puts "Error during encoding conversion: #{e.message}" # puts "Error during encoding conversion: #{e.message}"