(write_file): New function.

(write_string): Simplified error check, it's no real point in
calling ferror unless we also call fflush.

Rev: src/nettle/examples/io.c:1.5
Rev: src/nettle/examples/io.h:1.3

examples/io.c

@@ -118,10 +118,16 @@ write_file(const char *name, unsigned size, const char *buffer)
 
   res = fwrite(buffer, 1, size, f);
   
-  if (res < size || ferror(f))
+  if (res < size)
     res = 0;
 
-  fclose(f);
+  return fclose(f) == 0 && res > 0;
+}
+
+int
+write_string(FILE *f, unsigned size, const char *buffer)
+{
+  size_t res = fwrite(buffer, 1, size, f);
 
   return res > 0;
 }

examples/io.h

@@ -49,6 +49,9 @@ read_file(const char *name, unsigned size, char **buffer);
 int
 write_file(const char *name, unsigned size, const char *buffer);
 
+int
+write_string(FILE *f, unsigned size, const char *buffer);
+
 int
 simple_random(struct yarrow256_ctx *ctx, const char *name);