file exist is added

compile.sh

-time gcc -std=c99 -O2 rita.c  -o odbview -lX11 -lm -lpthread 
+time gcc -Wall -std=c99 -O2 rita.c  -o odbview -lX11 -lm -lpthread 
 

config.h

@@ -11,4 +11,4 @@
 #define oceancolor 0xffffffff
 #define landcolor  0x91919191
 #define stncolor   0x00bf0000
-#define landseamask_file "/home/a002066/odbview/landseamask.bin"
+#define landseamask_file "landseamask.bin"

run_main.c

@@ -8,7 +8,14 @@ static int run_view(int argc,char *argv[]){
   }
   
   if (argc >= 2 ){
-  
+    
+    if (!file_exist(landseamask_file)){
+      
+      printf("file %s does not exist so we quit \n",landseamask_file);
+      result = 1;
+      return result;
+    }
+    
     int width  = WIDTH_INIT;
     int height = HEIGHT_INIT;
     int ncolor = 0;

util.c

+static int file_exist(char *filename){
+
+  int result = 0;
+
+  if (filename){
+    FILE *file = fopen(filename,"r");
+    if (file){
+      result = 1;
+      fclose(file);
+    }
+  }
+  return result;
+}
+
 static float getradius(int w, int h, struct screen_dim *scdim){
 
   float result = (float)(((float)(w *h)/ (float)(scdim->width * scdim->height)) * scdim->symbol_radius);