Port radio_print_config

radio.c

@@ -154,28 +154,6 @@ badline:            fprintf(stderr, "Invalid line: '%s'\n", line);
     device->update_timestamp(device);
 }
 
-//
-// Print full information about the device configuration.
-//
-void radio_print_config(radio_device_t* device, FILE *out, int verbose)
-{
-    if (verbose) {
-        char buf [40];
-        time_t t;
-        struct tm *tmp;
-
-        t = time(NULL);
-        tmp = localtime(&t);
-        if (! tmp || ! strftime(buf, sizeof(buf), "%Y/%m/%d ", tmp))
-            buf[0] = 0;
-        fprintf(out, "#\n");
-        fprintf(out, "# Configuration generated %sby dmrconfig, version %s\n",
-            buf, version);
-        fprintf(out, "#\n");
-    }
-    device->print_config(device, out, verbose);
-}
-
 //
 // Update contacts database on the device.
 //

src/lib.rs

@@ -12,9 +12,13 @@ mod radio;
 const COPYRIGHT: &'static str = "Copyright (C) 2018 Serge Vakulenko KK6ABQ";
 const VERSION: Option<&'static str> = option_env!("VERSION");
 
+fn version() -> &'static str {
+  VERSION.unwrap_or("-------")
+}
+
 
 fn print_usage() {
-  let version = VERSION.unwrap_or("-----");
+  let version = version();
 
   print!("DMR Config, Version {}, {}", version, COPYRIGHT);
 

src/radio.rs

@@ -36,7 +36,6 @@ extern {
   fn get_active_device() -> *const radio_device_t;
   fn set_active_device(device: *const radio_device_t);
 
-  fn radio_print_config(device: *const radio_device_t, file: *const libc::FILE, verbose: c_int);
   fn radio_parse_config(device: *const radio_device_t, filename: *const c_char);
   fn radio_write_csv(device: *const radio_device_t, filename: *const c_char);
 
@@ -313,31 +312,41 @@ pub fn parse_config(radio: &Radio, filename: &str) {
 /// If `filename` is `None`, write to stdout.
 pub fn print_config(radio: &Radio, filename: Option<&str>) {
 
-  let file;
+  use std::io::Write;
 
-  let (fd, verbosity) = match filename {
+  fn make_config_string() -> String {
+    use chrono::Datelike;
+    let date = chrono::offset::Local::today();
+    let y = date.year(); let m = date.month(); let d = date.day();
+    format!("#\n# Configuration generated {}/{}/{} by dmrconfig, version {}\n#\n", y, m, d, crate::version())
+  }
+
+  let mut file;
+
+  let (fd, verbose) = match filename {
     None => {
       unsafe {
-        let verbosity = if libc::isatty(libc::STDOUT_FILENO) == 1 {
-          0
-        } else {
-          1
-        };
-        (libc::STDOUT_FILENO, verbosity)
+        let verbose = libc::isatty(libc::STDOUT_FILENO) != 1;
+        if verbose {
+          print!("{}", make_config_string());
+        }
+        (libc::STDOUT_FILENO, verbose)
       }
     },
     Some(filename) => {
       file = std::fs::File::create(filename).unwrap();
-      (file.as_raw_fd(), 1)
+      file.write_all(make_config_string().as_bytes()).unwrap();
+      (file.as_raw_fd(), true)
     }
   };
 
-  let device = radio.ptr;
   let mode = CString::new("w").unwrap();
 
   unsafe {
+    let device = radio.ptr as *mut radio_device_t;
+    let print_config_fn = (*device).print_config.unwrap();
     let file = libc::fdopen(fd, mode.as_ptr());
-    radio_print_config(device, file, verbosity);
+    print_config_fn(device, file, if verbose { 1 } else { 0 } );
     libc::fclose(file);
   }
 }