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/* $XConsortium: XmStringGet.c /main/6 1995/09/19 23:13:21 cde-sun $ */
/*
* Motif
*
* Copyright (c) 1987-2012, The Open Group. All rights reserved.
*
* These libraries and programs are free software; you can
* redistribute them and/or modify them under the terms of the GNU
* Lesser General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* These libraries and programs are distributed in the hope that
* they will be useful, but WITHOUT ANY WARRANTY; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with these librararies and programs; if not, write
* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
* Floor, Boston, MA 02110-1301 USA
*
*/
/*
* HISTORY
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "XmStringI.h"
#include "XmI.h"
XmStringComponentType
XmStringGetNextComponent(
XmStringContext context,
char **text,
XmStringTag *str_tag,
XmStringDirection *direction,
XmStringComponentType *unknown_tag,
unsigned short *unknown_length,
unsigned char **unknown_value )
{
XmStringComponentType type;
unsigned int len;
XtPointer val;
_XmProcessLock();
type = XmeStringGetComponent((_XmStringContext) context, True, True, &len, &val);
/* Case on return type */
/* Set appropriate return value and return. */
switch (type)
{
case XmSTRING_COMPONENT_DIRECTION:
*direction = *(XmStringDirection *)val;
XtFree((char *)val);
break;
case XmSTRING_COMPONENT_TAG:
*str_tag = (XmStringTag)val;
break;
case XmSTRING_COMPONENT_TEXT:
case XmSTRING_COMPONENT_LOCALE_TEXT:
*text = (char *)val;
break;
case XmSTRING_COMPONENT_SEPARATOR:
case XmSTRING_COMPONENT_END:
break;
default:
*unknown_tag = type;
*unknown_length = len;
*unknown_value = (unsigned char *)val;
type = XmSTRING_COMPONENT_UNKNOWN;
}
_XmProcessUnlock();
return(type);
}
XmStringComponentType
XmStringPeekNextComponent(XmStringContext context)
{
unsigned int len;
XtPointer val;
return XmeStringGetComponent((_XmStringContext) context, False, False, &len, &val);
}
/*
* fetch the first text 'segment' of the external TCS that matches the given
* char set.
*/
Boolean
XmStringGetLtoR(
XmString string,
XmStringTag tag,
char **text )
{
XmStringContext context;
char * t;
XmStringTag c, curtag = NULL;
XmStringDirection d;
Boolean s, is_local = FALSE, done = FALSE, is_default = FALSE;
_XmProcessLock();
if (!string) {
_XmProcessUnlock();
return(FALSE);
}
if (!tag) {
_XmProcessUnlock();
return (FALSE);
}
if ((tag == XmFONTLIST_DEFAULT_TAG) ||
(strcmp(tag, XmFONTLIST_DEFAULT_TAG) == 0))
is_local = TRUE;
*text = NULL; /* pre-condition result */
if (!is_local)
{
if ((strcmp(tag, XmSTRING_DEFAULT_CHARSET) == 0))
{
curtag = _XmStringGetCurrentCharset();
is_default = TRUE;
}
else curtag = tag;
}
XmStringInitContext (&context, string);
while ( ! done)
{
if (XmStringGetNextSegment (context, &t, &c, &d, &s))
{
if (c && ((d == XmSTRING_DIRECTION_L_TO_R) ||
(d == XmSTRING_DIRECTION_UNSET)) &&
(((is_local || is_default) &&
((c == XmFONTLIST_DEFAULT_TAG) ||
(strcmp(c, XmFONTLIST_DEFAULT_TAG) == 0) ||
(strcmp(c, _XmStringGetCurrentCharset()) == 0))) ||
(curtag && (strcmp (c, curtag) == 0))))
{
*text = t; /* OK, pass text to caller */
done = TRUE;
}
else
XtFree (t); /* not this text */
if (c)
XtFree (c); /* always dump charset */
}
else
done = TRUE;
}
XmStringFreeContext (context);
_XmProcessUnlock();
return (*text != NULL);
}
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