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/* $XConsortium: mlist.c,v 2.9 89/07/21 18:56:29 converse Exp $" */
/*
* COPYRIGHT 1987
* DIGITAL EQUIPMENT CORPORATION
* MAYNARD, MASSACHUSETTS
* ALL RIGHTS RESERVED.
*
* THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT NOTICE AND
* SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT CORPORATION.
* DIGITAL MAKES NO REPRESENTATIONS ABOUT THE SUITABILITY OF THIS SOFTWARE FOR
* ANY PURPOSE. IT IS SUPPLIED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY.
*
* IF THE SOFTWARE IS MODIFIED IN A MANNER CREATING DERIVATIVE COPYRIGHT
* RIGHTS, APPROPRIATE LEGENDS MAY BE PLACED ON THE DERIVATIVE WORK IN
* ADDITION TO THAT SET FORTH ABOVE.
*
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Digital Equipment Corporation not be
* used in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission.
*/
/* mlist.c -- functions to deal with message lists. */
#include "xmh.h"
/* Create a message list containing no messages. */
MsgList MakeNullMsgList()
{
MsgList mlist;
mlist = XtNew(MsgListRec);
mlist->nummsgs = 0;
mlist->msglist = XtNew(Msg);
mlist->msglist[0] = NULL;
return mlist;
}
/* Append a message to the given message list. */
void AppendMsgList(mlist, msg)
MsgList mlist;
Msg msg;
{
mlist->nummsgs++;
mlist->msglist =
(Msg *) XtRealloc((char *) mlist->msglist,
(unsigned) (mlist->nummsgs + 1) * sizeof(Msg));
mlist->msglist[mlist->nummsgs - 1] = msg;
mlist->msglist[mlist->nummsgs] = 0;
}
/* Delete a message from a message list. */
void DeleteMsgFromMsgList(mlist, msg)
MsgList mlist;
Msg msg;
{
int i;
for (i=0 ; i<mlist->nummsgs ; i++) {
if (mlist->msglist[i] == msg) {
mlist->nummsgs--;
for (; i<mlist->nummsgs ; i++)
mlist->msglist[i] = mlist->msglist[i+1];
return;
}
}
}
/* Create a new messages list containing only the one given message. */
MsgList MakeSingleMsgList(msg)
Msg msg;
{
MsgList result;
result = MakeNullMsgList();
AppendMsgList(result, msg);
return result;
}
/* We're done with this message list; free it's storage. */
void FreeMsgList(mlist)
MsgList mlist;
{
XtFree((char *) mlist->msglist);
XtFree((char *) mlist);
}
/* Parse the given string into a message list. The string contains mh-style
message numbers. This routine assumes those messages numbers refer to
messages in the given toc. */
MsgList StringToMsgList(toc, str)
Toc toc;
char *str;
{
MsgList mlist;
char *ptr;
int first, second, i;
Msg msg;
mlist = MakeNullMsgList();
while (*str) {
while (*str == ' ')
str++;
first = second = atoi(str);
str++;
for (ptr = str; *ptr >= '0' && *ptr <= '9'; ptr++) ;
if (*ptr == '-')
second = atoi(ptr + 1);
if (first > 0) {
for (i = first; i <= second; i++) {
msg = TocMsgFromId(toc, i);
if (msg) AppendMsgList(mlist, msg);
}
}
str = ptr;
}
return mlist;
}
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