如何解释dBase（.dbf）文件中的语言驱动程序名称？

Question

我在十六进制编辑器中打开了dBase（.dbf）文件。见下文。我圈出了包含“语言驱动程序名称”的字段。我如何解释该领域？该字段是字符串吗？如果它是一个字符串，那么为什么它包含一堆空（十六进制0）字符？

Answer 1

大多数dbase文件不包含语言驱动程序名称。您将要使用偏移量29处的语言代码库字节。下面列出了可能的十六进制值及其对应的Windows代码页：

'01' => 'cp437'       # U.S. MS-DOS
'02' => 'cp850'       # International MS-DOS
'03' => 'cp1252'      # Windows ANSI
'08' => 'cp865'       # Danish OEM
'09' => 'cp437'       # Dutch OEM
'0a' => 'cp850'       # Dutch OEM*
'0b' => 'cp437'       # Finnish OEM
'0d' => 'cp437'       # French OEM
'0e' => 'cp850'       # French OEM*
'0f' => 'cp437'       # German OEM
'10' => 'cp850'       # German OEM*
'11' => 'cp437'       # Italian OEM
'12' => 'cp850'       # Italian OEM*
'13' => 'cp932'       # Japanese Shift-JIS
'14' => 'cp850'       # Spanish OEM*
'15' => 'cp437'       # Swedish OEM
'16' => 'cp850'       # Swedish OEM*
'17' => 'cp865'       # Norwegian OEM
'18' => 'cp437'       # Spanish OEM
'19' => 'cp437'       # English OEM (Britain)
'1a' => 'cp850'       # English OEM (Britain)*
'1b' => 'cp437'       # English OEM (U.S.)
'1c' => 'cp863'       # French OEM (Canada)
'1d' => 'cp850'       # French OEM*
'1f' => 'cp852'       # Czech OEM
'22' => 'cp852'       # Hungarian OEM
'23' => 'cp852'       # Polish OEM
'24' => 'cp860'       # Portuguese OEM
'25' => 'cp850'       # Portuguese OEM*
'26' => 'cp866'       # Russian OEM
'37' => 'cp850'       # English OEM (U.S.)*
'40' => 'cp852'       # Romanian OEM
'4d' => 'cp936'       # Chinese GBK (PRC)
'4e' => 'cp949'       # Korean (ANSI/OEM)
'4f' => 'cp950'       # Chinese Big5 (Taiwan)
'50' => 'cp874'       # Thai (ANSI/OEM)
'57' => 'cp1252'      # ANSI
'58' => 'cp1252'      # Western European ANSI
'59' => 'cp1252'      # Spanish ANSI
'64' => 'cp852'       # Eastern European MS-DOS
'65' => 'cp866'       # Russian MS-DOS
'66' => 'cp865'       # Nordic MS-DOS
'67' => 'cp861'       # Icelandic MS-DOS
'6a' => 'cp737'       # Greek MS-DOS (437G)
'6b' => 'cp857'       # Turkish MS-DOS
'6c' => 'cp863'       # French-Canadian MS-DOS
'78' => 'cp950'       # Taiwan Big 5
'79' => 'cp949'       # Hangul (Wansung)
'7a' => 'cp936'       # PRC GBK
'7b' => 'cp932'       # Japanese Shift-JIS
'7c' => 'cp874'       # Thai Windows/MS-DOS
'86' => 'cp737'       # Greek OEM
'87' => 'cp852'       # Slovenian OEM
'88' => 'cp857'       # Turkish OEM
'c8' => 'cp1250'      # Eastern European Windows
'c9' => 'cp1251'      # Russian Windows
'ca' => 'cp1254'      # Turkish Windows
'cb' => 'cp1253'      # Greek Windows
'cc' => 'cp1257'      # Baltic Windows