DbfDataReader use old DBF specification

[s-s-a]

Below some quotes from Microsoft Visual Foxpro documentation.
Very impotant byte for correct table encoding - 29 | Code page mark

Table Header Record Structure
Byte offset | Description

• 0 | File type:
  0x02 FoxBASE / dBase
  0x03 FoxBASE+ / FoxPro /dBase III PLUS / dBase IV, no memo
  0x30 Visual FoxPro
  0x31 Visual FoxPro, autoincrement enabled
  0x32 Visual FoxPro, Varchar, Varbinary, or Blob-enabled
  0x43 dBASE IV SQL table files, no memo
  0x63 dBASE IV SQL system files, no memo
  0x83 FoxBASE+/dBASE III PLUS, with memo 0x8B dBASE IV with memo
  0xCB dBASE IV SQL table files, with memo
  0xF5 FoxPro 2.x (or earlier) with memo
  0xFB FoxBASE (?)
• 1 - 3 | Last update (YYMMDD)
• 4 – 7 | Number of records in file
• 8 – 9 | Position of first data record
• 10 – 11 | Length of one data record, including delete flag
  **- 12 – 27 | Reserved
• 28 | Table flags:
  0x01   file has a structural .cdx
  0x02   file has a Memo field
  0x04   file is a database (.dbc) This byte can contain the sum of any of the above values. For example, the value 0x03 indicates the table has a structural .cdx and a Memo field.
• 29 | Code page mark
• 30 – 31 | Reserved, contains 0x00
• 32 – n | Field subrecords The number of fields determines the number of field subrecords. One field subrecord exists for each field in the table.
• n+1 | Header record terminator (0x0D)
• n+2 to n+264 | A 263-byte range that contains the backlink, which is the relative path of an associated database (.dbc) file, information. If the first byte is 0x00, the file is not associated with a database. Therefore, database files (.DBC) always contain 0x00.**

Field Subrecords Structure

Byte offset	Description
0 – 10	Field name with a maximum of 10 characters. If less than 10, it is padded with null characters (0x00).
11	Field type:
W   -   Blob
C   –   Character
C   –   Character (binary)
Y   –   Currency
B   –   Double
D   –   Date
T   –   DateTime
F   –   Float
G   –   General
I   –   Integer
L   –   Logical
M   –   Memo
M   –   Memo (binary)
N   –   Numeric
P   –   Picture
Q   -   Varbinary
V   -   Varchar
V   -   Varchar (binary)
Note For each Varchar and Varbinary field, one bit, or "varlength" bit, is allocated in the last system field, which is a hidden field and stores the null status for all fields that can be null. If the Varchar or Varbinary field can be null, the null bit follows the "varlength" bit. If the "varlength" bit is set to 1, the length of the actual field value length is stored in the last byte of the field. Otherwise, if the bit is set to 0, length of the value is equal to the field size.
12 – 15	Displacement of field in record
16	Length of field (in bytes)
17	Number of decimal places
18	Field flags:
0x01   System Column (not visible to user)
0x02   Column can store null values
0x04   Binary column (for CHAR and MEMO only) 0x06   (0x02+0x04) When a field is NULL and binary (Integer, Currency, and Character/Memo fields)
0x0C   Column is autoincrementing
19 - 22	Value of autoincrement Next value
23	Value of autoincrement Step value
24 – 31	Reserved

[s-s-a]

Tip

You can use the following formula to return the number of fields in a table file: (x – 296/32). In the formula, x is the position of the first record (bytes 8 to 9 in the table header record), 296 is 263 (backlink info) + 1 (header record terminator) + 32 (first field subrecord), and 32 is the length of a field subrecord.

[s-s-a]

Code Pages Supported by Visual FoxPro

Code page	Platform	Code page identifier
437	U.S. MS-DOS	x01
620 *	Mazovia (Polish) MS-DOS	x69
737 *	Greek MS-DOS (437G)	x6A
850	International MS-DOS	x02
852	Eastern European MS-DOS	x64
857	Turkish MS-DOS	x6B
861	Icelandic MS-DOS	x67
865	Nordic MS-DOS	x66
866	Russian MS-DOS	x65
874	Thai Windows	x7C
895 *	Kamenicky (Czech) MS-DOS	x68
932	Japanese Windows	x7B
936	Chinese Simplified (PRC, Singapore) Windows	x7A
949	Korean Windows	x79
950	Traditional Chinese (Hong Kong SAR, Taiwan) Windows	x78
1250	Eastern European Windows	xC8
1251	Russian Windows	xC9
1252	Windows ANSI	x03
1253	Greek Windows	xCB
1254	Turkish Windows	xCA
1255	Hebrew Windows	x7D
1256	Arabic Windows	x7E
10000	Standard Macintosh	x04
10006	Greek Macintosh	x98
10007 *	Russian Macintosh	x96
10029	Macintosh EE	x97

[chrisrichards]

Are you able to supply one or more sample files for the Visual FoxPro (0x32) file type with the Varchar, Varbinary, or Blob-enabled columns?

[pyt0xic]

Are you able to supply one or more sample files for the Visual FoxPro (0x32) file type with the Varchar, Varbinary, or Blob-enabled columns?

I would be able to supply some if you would like @chrisrichards? I work with them on a daily basis so I am currently sitting with hundreds of gigs of VFP tables.

[chrisrichards]

@pyt0xic yes please, if you could send some files that would be great, thanks! Would you be happy for the files to be added to the repo?