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U:RDoc::AnyMethod[iI"primitive_errinfo:ETI"*Encoding::Converter#primitive_errinfo;TF: publico:RDoc::Markup::Document: @parts[o: RDoc::Markup::Paragraph; [I"Nprimitive_errinfo returns important information regarding the last error ;TI"as a 5-element array:;To: RDoc::Markup::BlankLine o:RDoc::Markup::Verbatim; [I"8[result, enc1, enc2, error_bytes, readagain_bytes] ;T: @format0o; ; [I"4result is the last result of primitive_convert.;T@o; ; [I"7Other elements are only meaningful when result is ;TI"H:invalid_byte_sequence, :incomplete_input or :undefined_conversion.;T@o; ; [ I"Denc1 and enc2 indicate a conversion step as a pair of strings. ;TI"AFor example, a converter from EUC-JP to ISO-8859-1 converts ;TI"9a string as follows: EUC-JP -> UTF-8 -> ISO-8859-1. ;TI"NSo [enc1, enc2] is either ["EUC-JP", "UTF-8"] or ["UTF-8", "ISO-8859-1"].;T@o; ; [I"Yerror_bytes and readagain_bytes indicate the byte sequences which caused the error. ;TI"'error_bytes is discarded portion. ;TI"Preadagain_bytes is buffered portion which is read again on next conversion.;T@o; ; [I" Example:;T@o; ; [5I""# \xff is invalid as EUC-JP. ;TI"9ec = Encoding::Converter.new("EUC-JP", "Shift_JIS") ;TI"7ec.primitive_convert(src="\xff", dst="", nil, 10) ;TI" p ec.primitive_errinfo ;TI"A#=> [:invalid_byte_sequence, "EUC-JP", "UTF-8", "\xFF", ""] ;TI" ;TI"R# HIRAGANA LETTER A (\xa4\xa2 in EUC-JP) is not representable in ISO-8859-1. ;TI"D# Since this error is occur in UTF-8 to ISO-8859-1 conversion, ;TI"A# error_bytes is HIRAGANA LETTER A in UTF-8 (\xE3\x81\x82). ;TI":ec = Encoding::Converter.new("EUC-JP", "ISO-8859-1") ;TI";ec.primitive_convert(src="\xa4\xa2", dst="", nil, 10) ;TI" p ec.primitive_errinfo ;TI"L#=> [:undefined_conversion, "UTF-8", "ISO-8859-1", "\xE3\x81\x82", ""] ;TI" ;TI"$# partial character is invalid ;TI":ec = Encoding::Converter.new("EUC-JP", "ISO-8859-1") ;TI"7ec.primitive_convert(src="\xa4", dst="", nil, 10) ;TI" p ec.primitive_errinfo ;TI"<#=> [:incomplete_input, "EUC-JP", "UTF-8", "\xA4", ""] ;TI" ;TI"E# Encoding::Converter::PARTIAL_INPUT prevents invalid errors by ;TI"# partial characters. ;TI":ec = Encoding::Converter.new("EUC-JP", "ISO-8859-1") ;TI"[ec.primitive_convert(src="\xa4", dst="", nil, 10, Encoding::Converter::PARTIAL_INPUT) ;TI" p ec.primitive_errinfo ;TI"4#=> [:source_buffer_empty, nil, nil, nil, nil] ;TI" ;TI"4# \xd8\x00\x00@ is invalid as UTF-16BE because ;TI"9# no low surrogate after high surrogate (\xd8\x00). ;TI"I# It is detected by 3rd byte (\00) which is part of next character. ;TI"9# So the high surrogate (\xd8\x00) is discarded and ;TI")# the 3rd byte is read again later. ;TI"A# Since the byte is buffered in ec, it is dropped from src. ;TI"7ec = Encoding::Converter.new("UTF-16BE", "UTF-8") ;TI"@ec.primitive_convert(src="\xd8\x00\x00@", dst="", nil, 10) ;TI" p ec.primitive_errinfo ;TI"K#=> [:invalid_byte_sequence, "UTF-16BE", "UTF-8", "\xD8\x00", "\x00"] ;TI" p src ;TI" #=> "@" ;TI" ;TI"B# Similar to UTF-16BE, \x00\xd8@\x00 is invalid as UTF-16LE. ;TI",# The problem is detected by 4th byte. ;TI"7ec = Encoding::Converter.new("UTF-16LE", "UTF-8") ;TI"@ec.primitive_convert(src="\x00\xd8@\x00", dst="", nil, 10) ;TI" p ec.primitive_errinfo ;TI"L#=> [:invalid_byte_sequence, "UTF-16LE", "UTF-8", "\x00\xD8", "@\x00"] ;TI" p src ;TI" #=> "";T; 0: @fileI"transcode.c;T:0@omit_headings_from_table_of_contents_below0I"#ec.primitive_errinfo -> array ;T0[ I"();T@ZFI"Converter;TcRDoc::NormalClass00
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