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

This commit is contained in:
David Sainty 2024-09-09 20:45:05 +10:00
parent 5f3708b307
commit 9dd478697a

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@ -31,31 +31,58 @@ class GossamerForumsCorrectEncoding < ImportScripts::Base
end end
# Method to detect and fix text encoding # Method to detect and fix text encoding
def fix_text_encoding(broken_content) def fix_text_encoding(content)
# Step 1: Try to detect encoding of the corrupted (double-encoded) content # Detect if content is already UTF-8 (should be the target encoding)
detection = CharlockHolmes::EncodingDetector.detect(broken_content) if content.encoding == Encoding::UTF_8 && content.valid_encoding?
original_encoding = detection[:encoding] # Return as-is if it is already properly encoded
puts "Original encoding detected: #{original_encoding}" return content
# 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 end
# Step 1: Assume the content was incorrectly encoded as ISO-8859-1 (Windows-1252) and needs to be corrected
begin
# Convert from ISO-8859-1 (or Windows-1252) back to UTF-8
# Force the encoding to ISO-8859-1 first, then encode to UTF-8 properly
fixed_content = content.force_encoding("ISO-8859-1").encode("UTF-8")
rescue Encoding::UndefinedConversionError, Encoding::InvalidByteSequenceError
# If conversion fails, leave it as is
return content
end
# Step 2: After reversing the encoding once, check if the result is valid UTF-8
# If it's still not valid UTF-8, force it back and try again
unless fixed_content.valid_encoding?
fixed_content = fixed_content.force_encoding("ISO-8859-1").encode("UTF-8")
end
# Return the properly decoded content
return fixed_content return fixed_content
end end
# # Step 1: Try to detect encoding of the corrupted (double-encoded) content
# detection = CharlockHolmes::EncodingDetector.detect(broken_content)
# original_encoding = detection[: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 # # Detect encoding
# detection = CharlockHolmes::EncodingDetector.detect(raw_content) # detection = CharlockHolmes::EncodingDetector.detect(raw_content)
# original_encoding = detection[:encoding] # original_encoding = detection[:encoding]