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

cde/lib/DtSearch/iscompat.c

@@ -0,0 +1,120 @@
+/*
+ *   COMPONENT_NAME: austext
+ *
+ *   FUNCTIONS: false
+ *		is_compatible_version
+ *
+ *   ORIGINS: 27
+ *
+ *
+ *   (C) COPYRIGHT International Business Machines Corp. 1993,1995
+ *   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.
+ */
+/*********************** ISCOMPAT.C ************************
+ * $XConsortium: iscompat.c /main/7 1996/11/21 19:50:44 drk $
+ * November 1993.
+ * Verifies version number compatibility between caller and this program.
+ *
+ * $Log$
+ * Revision 2.2  1995/10/25  17:46:54  miker
+ * Added prolog.
+ *
+ * Revision 2.1  1995/09/22  20:55:37  miker
+ * Freeze DtSearch 0.1, AusText 2.1.8
+ *
+ * Revision 1.4  1995/09/05  18:10:55  miker
+ * Name changes for DtSearch.
+ */
+#include "SearchP.h"
+
+#define X_INCLUDE_STRING_H
+#define XOS_USE_NO_LOCKING
+#include <X11/Xos_r.h>
+
+/****#define DEBUG_ISCOMPAT****/
+
+#ifdef DEBUG_ISCOMPAT
+static int false (int n) { printf("iscompat=%d\n",n);  return FALSE; }
+#else
+#define false(n)	FALSE
+#endif
+
+/************************************************/
+/*						*/
+/*	       is_compatible_version		*/
+/*						*/
+/************************************************/
+/* Returns TRUE if the caller's 'version' and 'revision' numbers,
+ * ie the first two numbers of a standard "v.r.m" or "v.r"
+ * version string, are between VERSCONST and the version
+ * compiled for this program, ie the constant AUSAPI_VERSION.
+ * VERSCONST is also expected to be a #define constant,
+ * either SCHEMA_VERSION, when the last schema change occurred,
+ * or PROTOCOL_VERSION, when the protocol between the ui and
+ * the engine changed.
+ * Returns FALSE if caller's version is not within that range.
+ * Uses strtok()!
+ */
+int             is_compatible_version (char *callers_version, char *VERSCONST)
+{
+char            safebuf [24];
+char           *ptr;
+int             fuzzy_v, fuzzy_r, his_v, his_r, my_v, my_r;
+_Xstrtokparams	strtok_buf;
+
+    if (callers_version == NULL)
+	return false(1);
+    if (*callers_version == '\0')
+	return false(2);
+    strncpy (safebuf, callers_version, sizeof(safebuf));
+    safebuf[sizeof(safebuf) - 1] = 0;
+    if ((ptr = _XStrtok (safebuf, ".", strtok_buf)) == NULL)
+	return false(3);
+    if ((his_v = atoi (ptr)) == 0)
+	if (*ptr != '0')
+	    return false(4);
+    if ((ptr = _XStrtok (NULL, ".", strtok_buf)) == NULL)
+	return false(5);
+    if ((his_r = atoi (ptr)) == 0)
+	if (*ptr != '0')
+	    return false(6);
+
+    strncpy (safebuf, VERSCONST, sizeof(safebuf));
+    safebuf[sizeof(safebuf) - 1] = 0;
+    if ((ptr = _XStrtok (safebuf, ".", strtok_buf)) == NULL)
+	return false(7);
+    if ((my_v = atoi (ptr)) == 0)
+	if (*ptr != '0')
+	    return false(8);
+    if ((ptr = _XStrtok (NULL, ".", strtok_buf)) == NULL)
+	return false(9);
+    if ((my_r = atoi (ptr)) == 0)
+	if (*ptr != '0')
+	    return false(10);
+
+    strncpy (safebuf, AUSAPI_VERSION, sizeof(safebuf));
+    safebuf[sizeof(safebuf) - 1] = 0;
+    if ((ptr = _XStrtok (safebuf, ".", strtok_buf)) == NULL)
+	return false(11);
+    if ((fuzzy_v = atoi (ptr)) == 0)
+	if (*ptr != '0')
+	    return false(12);
+    if ((ptr = _XStrtok (NULL, ".", strtok_buf)) == NULL)
+	return false(13);
+    if ((fuzzy_r = atoi (ptr)) == 0)
+	if (*ptr != '0')
+	    return false(14);
+
+    if (his_v < my_v || fuzzy_v < his_v)
+	return false(15);
+    if (his_v == my_v && his_r < my_r)
+	return false(16);
+    if (fuzzy_v == his_v && fuzzy_r < his_r)
+	return false(17);
+    return TRUE;
+}  /* is_compatible_version() */
+
+/*********************** ISCOMPAT.C ************************/