From c366f250216f6becb733dca30d1b8df5e0467e2a Mon Sep 17 00:00:00 2001
From: Frederic Bouvier <fredfgfs01@free.fr>
Date: Sat, 18 Apr 2009 17:31:02 +0200
Subject: [PATCH] Geoff McLane: Enhance testarray UI

---
 src/Lib/Array/testarray.cxx | 104 ++++++++++++++++++++++++++++++++----
 1 file changed, 95 insertions(+), 9 deletions(-)

diff --git a/src/Lib/Array/testarray.cxx b/src/Lib/Array/testarray.cxx
index 00f8f822..c0af429f 100644
--- a/src/Lib/Array/testarray.cxx
+++ b/src/Lib/Array/testarray.cxx
@@ -1,38 +1,124 @@
+// testarray.cxx
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
 #include <simgear/compiler.h>
 #include <simgear/bucket/newbucket.hxx>
-
+#include <sys/types.h>
+#include <sys/stat.h>
 #include <iostream>
 #include "array.hxx"
 
 using std::cout;
 using std::endl;
 
+#ifdef _MSC_VER
+#define M_ISDIR _S_IFDIR
+#else
+#define M_ISDIR __S_IFDIR
+#endif
+
+static void give_help( char * name )
+{
+  cout << "Usage:   " << name << " longitude latitude work_dir" << endl;
+  cout << "example: " << name << " 151.18 -33.94 your\\work\\dir, for YSSY (Sydney)" << endl;
+}
+
+static void check_for_help( int argc, char **argv )
+{
+   for(int i = 1; i < argc; i++)
+   {
+      char * parg = argv[i];
+      if(( strcmp(parg,"-h") == 0 )||
+         ( strcmp(parg,"--help") == 0 ))
+      {
+         give_help( argv[0] );
+         exit(0);
+      }
+   }
+}
+
+static int is_file_or_directory( char * cur_item )
+{
+   struct stat buf;
+   if( stat( cur_item, &buf ) == 0 ) {
+      if ( buf.st_mode & M_ISDIR )
+         return 1; // is directory
+      else
+         return 2; // is file
+   }
+   return 0;
+}
+
 int main( int argc, char **argv ) {
     double lon, lat;
 
-    if ( argc != 2 ) {
-	cout << "Usage: " << argv[0] << " work_dir" << endl;
-	exit(-1);
+    check_for_help(argc, argv);
+    
+    if ( argc != 4 ) {
+        cout << "ERROR: Needs 3 arguments!" << endl;
+        give_help( argv[0] );
+        exit(-1);
     }
 
-    string work_dir = argv[1];
-   
-    lon = -146.248360; lat = 61.133950;  // PAVD (Valdez, AK)
-    lon = -110.664244; lat = 33.352890;  // P13
+    //lon = -146.248360; lat = 61.133950;  // PAVD (Valdez, AK)
+    //lon = -110.664244; lat = 33.352890;  // P13
+    //lon = 150.156; lat = -38.474; // Lithgow, NSW, Australia
+    //lat = -33.943392; lon = 151.179773; // YSSY Sydney Intl  tile=e150s30
+
+    // get arguments
+    lon = atof( argv[1] );
+    lat = atof( argv[2] );
+    string work_dir = argv[3];
+    
+    if ( is_file_or_directory((char *) work_dir.c_str() ) != 1 ) {
+       cout << "ERROR: '" << work_dir << "' is not a valid directory!" << endl;
+       exit(1);
+    }
+    if( ( lon > 180.0 ) || ( lon < -180.0 ) ) {
+       cout << "ERROR: logitude '" << lon << "' not in world range! -180.0 to 180.0" << endl;
+       exit(1);
+    }
+    if( ( lat > 90.0 ) || ( lat < -90.0 ) ) {
+       cout << "ERROR: latitude '" << lat << "' not in world range! -90.0 to 90.0" << endl;
+       exit(1);
+    }
 
     SGBucket b( lon, lat );
+    cout << "input: lon=" << lon << ", lat=" << lat <<
+       ", gives Bucket = " << b << endl;
+
     string base = b.gen_base_path();
     string path = work_dir + "/" + base;
 
+    if ( is_file_or_directory((char *) path.c_str() ) != 1 ) {
+       cout << "ERROR: '" << path << "' is not a valid directory!" << endl;
+       exit(1);
+    }
+    
     string arraybase = path + "/" + b.gen_index_str();
     cout << "arraybase = " << arraybase << endl;
     
+    path = arraybase + ".arr";
+    if ( is_file_or_directory((char *) path.c_str() ) != 2 ) {
+      path += ".gz";
+       if ( is_file_or_directory((char *) path.c_str() ) != 2 ) {
+         cout << "WARNING: can not locate " << arraybase << ".arr, nor .arr.gz!" << endl;
+         cout << "Query will probably fail, with zero result!" << endl;
+       }
+    }
+    
     TGArray a(arraybase);
     a.parse( b );
 
     lon *= 3600;
     lat *= 3600;
-    cout << "  " << a.altitude_from_grid(lon, lat) << endl;
+    cout << "altitude of " << a.altitude_from_grid(lon, lat) <<
+       " is indicated." << endl;
 
     return 0;
 }
+
+// eof - testarray.cxx