Defines the text of a code-set map file and a terminal map file.
The text of a code set map file consists of a description of the code set. The text of a terminal map file consists of a set of rules.
The text of a code set map file is a description of the code set. It specifies the optional converter modules to push on the stream. The code set map file is located in the /usr/lib/nls/csmap directory. Its name is the code set name.
The code set map file contains the following lines:
| Name : | name |
| Type : | M | S |
| Multibyte handling : | EUC |
| ioctl EUC_WSET : | w1:d1, w2:d2, w3:d3 |
| lower converter : | /usr/lib/drivers/lwconv |
| upper converter : | /usr/lib/drivers/upconv |
The lines have the following meaning:
| Name | Specifies the code set name. It is also the code set map file name. | ||||
| Type | Specifies the code set type. It can be one of the following:
| ||||
| Multibyte handling | Specifies the type of multibyte handling of the code set. This line is required only if Type is M. It must be EUC, denoting an EUC multibyte code set. | ||||
| ioctl EUC_WSET | Specifies the parameters for the EUC_WSET ioctl operation. This line is required only if Type is M. The w1, w2, and w3 parameters specify the memory width of the code set; the d1, d2, and d3 parameters specify the screen width of the code set. | ||||
| lower converter | |||||
| upper converter | Specifies the lower and upper converters to use on the stream. This line is required only if the code set is a non-EUC multibyte code set. |
For example, the code set map file for the ISO 8859-1 code set would contain the following lines:
Name: ISO8859-1 Type: S
Another example: the code set map file for the IBM-932 code set would contain the following lines:
Name : IBM-932 Type : M Multibyte handling : EUC ioctl EUC_WSET : 2:2,2:1,0:0 lower converter : /usr/lib/drivers/lc_sjis upper converter : /usr/lib/drivers/up_sjis
The text of a terminal map file is a set of rules. Each rule has the following format:
pattern:replacement
The size of the input pattern string is limited to 10 characters in length and the size of the replacement pattern string is limited to 16 characters in length.
The pattern string can include the following special characters:
The replacement string can include the following special characters:
The eucioctl.h file.
The setmaps command.
The setcsmap subroutine.
tty Subsystem Overview in AIX Version 4.3 General Programming Concepts: Writing and Debugging Programs.