Initial import of the CDE 2.1.30 sources from the Open Group.

cde/lib/DtSearch/msgs.c

@@ -0,0 +1,138 @@
+/*
+ *   COMPONENT_NAME: austext
+ *
+ *   FUNCTIONS: DtSearchAddMessage
+ *		DtSearchFreeMessages
+ *		DtSearchGetMessages
+ *		DtSearchHasMessages
+ *
+ *   ORIGINS: 27
+ *
+ *
+ *   (C) COPYRIGHT International Business Machines Corp. 1995
+ *   All Rights Reserved
+ *   Licensed Materials - Property of IBM
+ *   US Government Users Restricted Rights - Use, duplication or
+ *   disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
+ */
+/********************** MSGS.C *****************************
+ * $XConsortium: msgs.c /main/4 1996/05/07 13:40:27 drk $
+ * August 1995.
+ * Handles access to global ausapi_msglist for DtSearch.
+ *
+ * $Log$
+ * Revision 2.2  1995/10/26  14:35:04  miker
+ * Added prolog.
+ *
+ * Revision 2.1  1995/09/22  21:19:23  miker
+ * Freeze DtSearch 0.1, AusText 2.1.8
+ */
+#include "SearchP.h"
+#define PROGNAME	"MSGS"
+
+/****************************************/
+/*					*/
+/*          DtSearchHasMessages		*/
+/*					*/
+/****************************************/
+int	DtSearchHasMessages (void)
+{ return (ausapi_msglist != NULL); }
+
+
+/****************************************/
+/*					*/
+/*          DtSearchFreeMessages	*/
+/*					*/
+/****************************************/
+void	DtSearchFreeMessages (void)
+{ free_llist (&ausapi_msglist); }
+
+
+/****************************************/
+/*					*/
+/*          DtSearchAddMessage		*/
+/*					*/
+/****************************************/
+/* Mallocs space for new message and appends copy of passed msg
+ * to end of global msglist.  This function allocates memory
+ * for the messages--THE CALLER MUST FREE THE MESSAGES,
+ * preferably using DtSearchFreeMessages() (free_llist()).
+ * DtSearchAddMessage() was formerly called append_msglist() in msgutil.c.
+ */
+void	DtSearchAddMessage (char *msg)
+{
+    LLIST	*new;
+    LLIST	**pp;
+    new = austext_malloc (strlen(msg) + sizeof(LLIST) + 2,
+	PROGNAME"47", NULL);
+    new->link = NULL;
+    new->data = new + 1;	/* hop over exactly 1 LLIST structure */
+    strcpy (new->data, msg);
+    for ( pp = &ausapi_msglist;  *pp != NULL;  pp = &((*pp)->link) ) ;
+    *pp = new;
+    return;
+} /* DtSearchAddMessage() */
+
+
+/****************************************/
+/*					*/
+/*          DtSearchGetMessages		*/
+/*					*/
+/****************************************/
+/* July 1994,
+ * DtSearchGetMessages was formerly flatmessages().
+ * Copies all msgs in ausapi_msglist into single, flat text buffer.
+ */
+char	*DtSearchGetMessages (void)
+{
+    char		*targ, *src;
+    size_t		totlen = 0L;
+    LLIST		*llptr;
+    static char		*flatbuf = NULL;
+    static size_t	flatbufsz = 0L;
+
+    /* Since function is often used as an arg in printf,
+     * be sure to return something safe when there are no msgs.
+     */
+    if (ausapi_msglist == NULL)
+	return "";
+
+    /* First Pass: Get the total length.
+     * including room for inserted \n's.
+     */
+    for (llptr = ausapi_msglist;  llptr != NULL;  llptr = llptr->link)
+        totlen += strlen(llptr->data) + 2;
+    if (totlen > flatbufsz) {
+	if (flatbuf)
+	    free (flatbuf);
+	flatbuf = austext_malloc (totlen + 4, PROGNAME"73", NULL);
+	flatbufsz = totlen;
+    }
+
+    /* Second Pass: Copy the messages into the flat buffer.
+     * Make sure there are no less than 2 \n's at end of each msg--
+     * one to terminate msg (it may already be in the original
+     * msg string) and an added one to separate from the next msg.
+     */
+    targ = flatbuf;
+    for (llptr = ausapi_msglist;  llptr != NULL;  llptr = llptr->link) {
+	src = (char *) llptr->data;
+	while (*src != 0)
+	    *targ++ = *src++;
+	*targ++ = '\n';
+	if (*(--src) != '\n')
+	    *targ++ = '\n';
+    }
+
+    /* Overlay the last two \n so the whole string won't end.
+     * This prevents ugly spacing problems when function
+     * is used directly in information dialog boxes.  It also
+     * means regular writes to stdout etc will usually have to
+     * insert their own final \n.
+     */
+    targ[-2] = 0;
+    return flatbuf;
+}  /* DtSearchGetMessages() */
+
+/********************** MSGS.C *****************************/
+