generate_plugin: write main plugin source to output dir

src/main.rs

@@ -6,6 +6,7 @@ use structopt::StructOpt;
 use ar::Archive;
 use std::fs::File;
 use std::io;
+use std::io::Write;
 
 #[derive(Debug, StructOpt)]
 #[structopt(name = "Localize", about = "Localize a static library into a single object archive")]
@@ -112,8 +113,11 @@ struct PluginEntry
     prefix: String,
 }
 
-fn generate_plugin(plugins: &Vec<PluginEntry>, output: &PathBuf)
-{
+fn generate_plugin(
+    plugins: &Vec<PluginEntry>,
+    output_directory: &PathBuf,
+    output: &PathBuf
+) {
 
     let plugins_entries : Vec<String> = plugins
         .iter()
@@ -137,15 +141,15 @@ typedef int (*vlc_plugin_entry) (vlc_set_cb, void *);
 {prototypes}
 
 vlc_plugin_entry vlc_plugin_entries[] = {{
-    {entries} NULL,
+    {entries} 0,
 }};
 
 int vlc_entry(vlc_set_cb func_set, void *opaque)
 {{
     for(vlc_plugin_entry *entry=vlc_plugin_entries;
-        entry != NULL; entry++)
+        entry != 0; entry++)
     {{
-        int ret = entry(func_set, opaque);
+        int ret = (*entry)(func_set, opaque);
         if (ret != 0)
             return ret;
     }}
@@ -173,6 +177,15 @@ const char * vlc_entry_api_version()
     api_version = "\"4.0.0\"");
 
     println!("Generated:\n{}", sources);
+
+    let mut filename = output_directory.clone();
+    filename.push("main.c");
+
+    let mut file = File::create(filename)
+        .expect("cannot create temporary file");
+
+    file.write(&sources.as_bytes())
+        .expect("cannot write source to temporary file");
 }
 
 fn main() {
@@ -180,8 +193,12 @@ fn main() {
     println!("{:?}", opt);
     link(opt);
 
+    let output_dir = fs::canonicalize("./output_dir/")
+        .unwrap();
+
     generate_plugin(&vec![
         PluginEntry{ prefix: "vlc_video_output_test_truc".into(),
-                     lib: PathBuf::new() }
-    ], &PathBuf::new());
+                     lib: PathBuf::new() } ],
+        &output_dir,
+        &PathBuf::new());
 }