NAME
strord — convert string data order
SYNOPSIS
#include <nl_types.h>
char *strord(char *s1, const char *s2, nl_mode m);
DESCRIPTION
The text orientation (mode) of a file can be
right-to-left (non-Latin) or left-to-right (Latin).
This text orientation can affect the way data is arranged in the file.
The data arrangements that result are called screen order and
keyboard order.
strord()
converts the order of characters in
s2
from screen to keyboard order or vice versa and places the result in
s1.
The arguments
s1
and
s2
point to strings (arrays of characters terminated by a null character).
strord()
returns
s1.
strord()
performs the conversion based on mode information
indicated by the argument
m.
The argument
m
is of type
nl_mode
found in the header file
<nl_types.h>.
The mode argument can have two possible values:
NL_LATIN
and
NL_NONLATIN.
If the mode argument is
NL_LATIN,
the text orientation is left-to-right,
and all non-Latin sub-strings are reversed.
Non-Latin sub-strings are any number
of contiguous right-to-left language characters.
Non-Latin sub-strings are delimited by
ASCII
characters.
Similarly, if the mode argument is
NL_NONLATIN,
the text orientation is right-to-left
and all Latin sub-strings are reversed.
Latin sub-strings are any number of contiguous printable
ASCII
characters.
Latin sub-strings are delimited
by right-to-left language characters and
ASCII
control codes.
Some right-to-left languages have a duplicate set of digits
called alternative numbers.
Alternative numbers always have a left-to-right orientation.
EXTERNAL INFLUENCES
Locale
The
LC_NUMERIC
category determines whether a right-to-left language
has alternative numbers.
International Code Set Support
Single-byte character code sets are supported.
WARNINGS
strord()
does not check for overflow of the array pointed to by
s1.
Obsolescent Interfaces
strord()
is to be obsoleted at a future date.
AUTHOR
strord()
was developed by HP.
Printable version
