Adding another convenience function for codes. (#291)

* improved testing

* more XML testing

* fixed header changes

src/g2cxml.c

@@ -81,7 +81,7 @@ g2c_free_tables()
  * @return 0 for success, error code otherwise.
  */
 int
-g2c_find_desc(char *title, char *code, char *desc)
+g2c_find_desc_str(char *title, char *code, char *desc)
 {
     G2C_CODE_TABLE_T *t = NULL;
     int found = 0;
@@ -117,6 +117,26 @@ g2c_find_desc(char *title, char *code, char *desc)
     return G2C_NOERROR;
 }
 
+/** Given a table title and an integer code, find a description.
+ *
+ * @param title Title of table.
+ * @param code Code to search for as an int.
+ * @param desc Pointer that gets a copy of the description. Must be
+ * allocated to ::G2C_MAX_GRIB_DESC_LEN + 1.
+ *
+ * @author Ed Hartnett @date 8/28/22
+ *
+ * @return 0 for success, error code otherwise.
+ */
+int
+g2c_find_desc(char *title, int code, char *desc)
+{
+    char str_code[G2C_MAX_GRIB_CODE_LEN + 1];
+
+    sprintf(str_code, "%d", code);
+    return g2c_find_desc_str(title, str_code, desc);
+}
+
 /** Find a table given a key.
  *
  * @param key The table title to find.

src/grib2.h.in

@@ -273,7 +273,8 @@ g2int jpcunpackd(unsigned char *cpack, g2int len, g2int *idrstmpl, g2int ndpts,
 
 /* Internal functions. */
 int g2c_xml_init();
-int g2c_find_desc(char *title, char *code, char *desc);
+int g2c_find_desc_str(char *title, char *code, char *desc);
+int g2c_find_desc(char *title, int code, char *desc);
 void g2c_free_tables();
 
 /* Logging, for debugging purposes. */

tests/tst_xml.c

@@ -17,7 +17,11 @@ main()
     printf("Testing XML ingestion...\n");
     if (g2c_xml_init())
 	return G2C_ERROR;
-    if ((ret = g2c_find_desc("Code table 0.0", "0", desc)))
+    if ((ret = g2c_find_desc("Code table 0.0", 0, desc)))
+	return ret;
+    if (strcmp("Meteorological products", desc))
+	return G2C_ERROR;
+    if ((ret = g2c_find_desc_str("Code table 0.0", "0", desc)))
 	return ret;
     if (strcmp("Meteorological products", desc))
 	return G2C_ERROR;