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-.\"
-.\" $Id: ucpgba.man,v 1.1 1999/11/19 16:08:34 mleisher Exp $
-.\"
-.TH ucpgba 3 "19 November 1999"
-.SH NAME
-ucpgba \- functions for doing bidirectional reordering of Unicode text and
-logical and visual cursor motion
-
-.SH SYNOPSIS
-.nf
-#include <ucdata.h>
-#include <ucpgba.h>
-
-ucstring_t *ucstring_create(unsigned long *source, unsigned long start,
- unsigned long end, int default_direction,
- int cursor_motion)
-.sp
-void ucstring_free(ucstring_t *string)
-.sp
-int ucstring_set_cursor_motion(ucstring_t *string, int cursor_motion)
-.sp
-int ucstring_cursor_right(ucstring_t *string, int count)
-.sp
-int ucstring_cursor_left(ucstring_t *string, int count)
-.sp
-void ucstring_cursor_info(ucstring_t *string, int *direction,
- unsigned long *position)
-
-.SH DESCRIPTION
-.TP 4
-.BR Macros
-UCPGBA_LTR
-.br
-UCPGBA_RTL
-.br
-UCPGBA_CURSOR_VISUAL
-.br
-UCPGBA_CURSOR_LOGICAL
-
-.TP 4
-.BR ucstring_create()
-This function will create a reordered string by using the implicit
-directionality of the characters in the specified substring.
-.sp
-The `default_direction' parameter should be one of UCPGBA_LTR or UCPGBA_RTL
-and is used only in cases where a string contains no characters with strong
-directionality.
-.sp
-The `cursor_motion' parameter should be one of UCPGBA_CURSOR_VISUAL or
-UCPGBA_CURSOR_LOGICAL, and is used to specify the initial cursor motion
-behavior. This behavior can be switched at any time using
-ustring_set_cursor_motion().
-
-.TP 4
-.BR ucstring_free()
-This function will deallocate the memory used by the string, incuding the
-string itself.
-
-.TP 4
-.BR ucstring_cursor_info()
-This function will return the text position of the internal cursor and the
-directionality of the text at that position. The position returned is the
-original text position of the character.
-
-.TP 4
-.BR ucstring_set_cursor_motion()
-This function will change the cursor motion type and return the previous
-cursor motion type.
-
-.TP 4
-.BR ucstring_cursor_right()
-This function will move the internal cursor to the right according to the
-type of cursor motion set for the string.
-.sp
-If no cursor motion is performed, it returns 0. Otherwise it will return a 1.
-
-.TP 4
-.BR ucstring_cursor_left()
-This function will move the internal cursor to the left according to the
-type of cursor motion set for the string.
-.sp
-If no cursor motion is performed, it returns 0. Otherwise it will return a 1.
-
-.SH "SEE ALSO"
-ucdata(3)
-
-.SH ACKNOWLEDGMENTS
-These are people who have helped with patches or alerted me about problems.
-
-.SH AUTHOR
-Mark Leisher
-.br
-Computing Research Lab
-.br
-New Mexico State University
-.br
-Email: mleisher@crl.nmsu.edu