apps - allow text strings for object-type and property arguments. (#8)

The existing method of calling various example apps requires the user to
know the enumeration value for the object-type and property values. This
patch enhances to allow the object-type and property arguments to be
specified as strings, using the strings as defined in the spec. It does
not remove the old behaviour.

Current:
  bacrp 1234 3 1 85

New:
  bacrp 1234 binary-input 1 present-value

This change does not currently apply to the property arguments of the
readm and writem applications.

src/bacnet/bactext.c

@@ -33,6 +33,7 @@
 ####COPYRIGHTEND####*/
 
 #include <stdio.h>
+#include <stdlib.h>
 #include "bacnet/indtext.h"
 #include "bacnet/bacenum.h"
 #include "bacnet/bactext.h"
@@ -42,6 +43,30 @@
 static const char *ASHRAE_Reserved_String = "Reserved for Use by ASHRAE";
 static const char *Vendor_Proprietary_String = "Vendor Proprietary Value";
 
+/* Search for a text value first based on the corresponding text list, then by
+ * attempting to convert to an integer value. */
+static bool bactext_strtol_index(INDTEXT_DATA *istring, const char *search_name, unsigned *found_index)
+{
+    char *endptr;
+    long value;
+
+    if (indtext_by_istring(istring, search_name, found_index) == true) {
+        return true;
+    } else {
+        value = strtol(search_name, &endptr, 0);
+        if (endptr == search_name) {
+            /* No digits found */
+            return false;
+        } else if (*endptr != '\0') {
+            /* Extra text found */
+            return false;
+        } else {
+            *found_index = (unsigned)value;
+            return true;
+        }
+    }
+}
+
 INDTEXT_DATA bacnet_confirmed_service_names[] = {
     { SERVICE_CONFIRMED_ACKNOWLEDGE_ALARM, "Acknowledge-Alarm" },
     { SERVICE_CONFIRMED_COV_NOTIFICATION, "COV-Notification" },
@@ -206,6 +231,12 @@ bool bactext_object_type_index(const char *search_name, unsigned *found_index)
         bacnet_object_type_names, search_name, found_index);
 }
 
+bool bactext_object_type_strtol(const char *search_name, unsigned *found_index)
+{
+    return bactext_strtol_index(
+        bacnet_object_type_names, search_name, found_index);
+}
+
 INDTEXT_DATA bacnet_property_names[] = {
     /* FIXME: use the enumerations from bacenum.h */
     { PROP_ACKED_TRANSITIONS, "acked-transitions" },
@@ -660,6 +691,12 @@ bool bactext_property_index(const char *search_name, unsigned *found_index)
     return indtext_by_istring(bacnet_property_names, search_name, found_index);
 }
 
+bool bactext_property_strtol(const char *search_name, unsigned *found_index)
+{
+    return bactext_strtol_index(
+        bacnet_property_names, search_name, found_index);
+}
+
 INDTEXT_DATA bacnet_engineering_unit_names[] = {
     { UNITS_SQUARE_METERS, "square-meters" },
     { UNITS_SQUARE_FEET, "square-feet" },

src/bacnet/bactext.h

@@ -55,6 +55,9 @@ extern "C" {
     bool bactext_object_type_index(
         const char *search_name,
         unsigned *found_index);
+    bool bactext_object_type_strtol(
+        const char *search_name,
+        unsigned *found_index);
     const char *bactext_notify_type_name(
         unsigned index);
     const char *bactext_event_type_name(
@@ -67,6 +70,9 @@ extern "C" {
     bool bactext_property_index(
         const char *search_name,
         unsigned *found_index);
+    bool bactext_property_strtol(
+        const char *search_name,
+        unsigned *found_index);
     const char *bactext_engineering_unit_name(
         unsigned index);
     bool bactext_engineering_unit_index(