[DOC] Mention XML configuration can override internal defaults.

[andy/viking.git] / src / degrees_converters.c

diff --git a/src/degrees_converters.c b/src/degrees_converters.c
index 53fd17558dc87a5e200b7ea4a82c7ed0e3703bfd..9e55a399aa4c55e646b37ec39d80ed4b0b64a8b7 100644 (file)
--- a/src/degrees_converters.c
+++ b/src/degrees_converters.c
@@ -1,7 +1,111 @@
+/*
+ * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
+ *
+ * Copyright (C) 2006-2007, Guilhem Bonnefille <guilhem.bonnefille@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_MATH_H
 #include <math.h>
-#include <glib.h>
+#endif
+#include <string.h>
+#include "degrees_converters.h"
+
+#define DEGREE_SYMBOL "\302\260"
+
+/**
+ * @param pos_c char for positive value
+ * @param neg_c char for negative value
+ */
+static gchar *convert_dec_to_ddd(gdouble dec, gchar pos_c, gchar neg_c)
+{
+  gchar sign_c = ' ';
+  gdouble val_d;
+  gchar *result = NULL;
+
+  if ( dec > 0 )
+    sign_c = pos_c;
+  else if ( dec < 0 )
+    sign_c = neg_c;
+  else /* Nul value */
+    sign_c = ' ';
+
+  /* Degree */
+  val_d = fabs(dec);
+
+  /* Format */
+  result = g_strdup_printf ( "%c%f" DEGREE_SYMBOL, sign_c, val_d );
+  return result;
+}
+
+gchar *convert_lat_dec_to_ddd(gdouble lat)
+{
+  return convert_dec_to_ddd(lat, 'N', 'S');
+}
+
+gchar *convert_lon_dec_to_ddd(gdouble lon)
+{
+  return convert_dec_to_ddd(lon, 'E', 'W');
+}
+
+/**
+ * @param pos_c char for positive value
+ * @param neg_c char for negative value
+ */
+static gchar *convert_dec_to_dmm(gdouble dec, gchar pos_c, gchar neg_c)
+{
+  gdouble tmp;
+  gchar sign_c = ' ';
+  gint val_d;
+  gdouble val_m;
+  gchar *result = NULL;
 
-#include <stdio.h>
+  if ( dec > 0 )
+    sign_c = pos_c;
+  else if ( dec < 0 )
+    sign_c = neg_c;
+  else /* Nul value */
+    sign_c = ' ';
+
+  /* Degree */
+  tmp = fabs(dec);
+  val_d = (gint)tmp;
+
+  /* Minutes */
+  val_m = (tmp - val_d) * 60;
+
+  /* Format */
+  result = g_strdup_printf ( "%c%d" DEGREE_SYMBOL "%f'",
+                             sign_c, val_d, val_m );
+  return result;
+}
+
+gchar *convert_lat_dec_to_dmm(gdouble lat)
+{
+  return convert_dec_to_dmm(lat, 'N', 'S');
+}
+
+gchar *convert_lon_dec_to_dmm(gdouble lon)
+{
+  return convert_dec_to_dmm(lon, 'E', 'W');
+}
 
 /**
  * @param pos_c char for positive value
@@ -15,7 +119,6 @@ static gchar *convert_dec_to_dms(gdouble dec, gchar pos_c, gchar neg_c)
   gdouble val_s;
   gchar *result = NULL;
 
-  /* North ? South ? */
   if ( dec > 0 )
     sign_c = pos_c;
   else if ( dec < 0 )
@@ -31,12 +134,11 @@ static gchar *convert_dec_to_dms(gdouble dec, gchar pos_c, gchar neg_c)
   tmp = (tmp - val_d) * 60;
   val_m = (gint)tmp;
 
-  /* Minutes */
+  /* Seconds */
   val_s = (tmp - val_m) * 60;
 
   /* Format */
-  /* TODO : replace "°" as UTF-8 */
-  result = g_strdup_printf ( "%c%d°%d'%f\"",
+  result = g_strdup_printf ( "%c%d" DEGREE_SYMBOL "%d'%.4f\"",
                              sign_c, val_d, val_m, val_s );
   return result;
 }
@@ -61,7 +163,7 @@ gdouble convert_dms_to_dec(const gchar *dms)
        
        if (dms != NULL) {
                int nbFloat = 0;
-               gchar *ptr, *endptr;
+               const gchar *ptr, *endptr;
 
                // Compute the sign
                // It is negative if:
@@ -76,8 +178,13 @@ gdouble convert_dms_to_dec(const gchar *dms)
                        gdouble value;
                        ptr = strpbrk (endptr, "0123456789,.");
                        if (ptr != NULL) {
-                               value = g_strtod(ptr, &endptr);
-                       nbFloat++;
+                               const gchar *tmpptr = endptr;
+                               value = g_strtod((const gchar *)ptr, (gchar **)&endptr);
+                               // Detect when endptr hasn't changed (which may occur if no conversion took place)
+                               //  particularly if the last character is a ',' or there are multiple '.'s like '5.5.'
+                               if ( endptr == tmpptr )
+                                       break;
+                               nbFloat++;
                switch(nbFloat) {
                        case 1:
                                d = value;
@@ -88,6 +195,7 @@ gdouble convert_dms_to_dec(const gchar *dms)
                        case 3:
                                s = value;
                                break;
+                       default: break;
                }
                        }
                } while (ptr != NULL && endptr != NULL);