feat: romname command (#402)

README.md

@@ -24,6 +24,8 @@ Show help
 
 ```
 > vpxtool --help
+Vpxtool v0.16.0
+
 Extracts and assembles vpx files
 
 Usage: vpxtool [COMMAND]
@@ -46,6 +48,7 @@ Commands:
   config          Vpxtool related config file
   images          Vpx image related commands
   gamedata        Vpx gamedata related commands
+  romname         Prints the PinMAME ROM name from a vpx file
   help            Print this message or the help of the given subcommand(s)
 
 Options:

src/indexer.rs

@@ -426,6 +426,19 @@ fn index_vpx_file(vpx_file_path: &PathWithMetadata) -> io::Result<(PathBuf, Inde
     Ok((indexed.path.clone(), indexed))
 }
 
+pub(crate) fn get_romname_from_vpx(vpx_path: &Path) -> io::Result<Option<String>> {
+    let mut vpx_file = vpx::open(vpx_path)?;
+    let game_data = vpx_file.read_gamedata()?;
+    let code = consider_sidecar_vbs(vpx_path, game_data)?;
+    let game_name = extract_game_name(&code);
+    let requires_pinmame = requires_pinmame(&code);
+    if requires_pinmame {
+        Ok(game_name)
+    } else {
+        Ok(None)
+    }
+}
+
 fn read_table_info_json(info_file_path: &Path) -> io::Result<TableInfo> {
     let mut info_file = File::open(info_file_path)?;
     let json = serde_json::from_reader(&mut info_file).map_err(|e| {

src/lib.rs

@@ -73,6 +73,8 @@ const CMD_IMAGES_WEBP: &str = "webp";
 const CMD_GAMEDATA: &str = "gamedata";
 const CMD_GAMEDATA_SHOW: &str = "show";
 
+const CMD_ROMNAME: &str = "romname";
+
 pub struct ProgressBarProgress {
     pb: ProgressBar,
 }
@@ -759,6 +761,17 @@ fn handle_command(matches: ArgMatches) -> io::Result<ExitCode> {
             }
             _ => unreachable!(),
         },
+        Some((CMD_ROMNAME, sub_matches)) => {
+            let path = sub_matches
+                .get_one::<String>("VPXPATH")
+                .map(|s| s.as_str())
+                .unwrap_or_default();
+            let expanded_path = expand_path_exists(path)?;
+            if let Some(rom_name) = indexer::get_romname_from_vpx(&expanded_path)? {
+                println!("{rom_name}")?;
+            }
+            Ok(ExitCode::SUCCESS)
+        }
         _ => unreachable!(), // If all subcommands are defined above, anything else is unreachable!()
     }
 }
@@ -1052,6 +1065,12 @@ fn build_command() -> Command {
                         ),
                 ),
         )
+        .subcommand(
+            Command::new(CMD_ROMNAME)
+                .about("Prints the PinMAME ROM name from a vpx file")
+                .long_about("Extracts the PinMAME ROM name from a vpx file by searching for specific patterns in the table script. If the table is not PinMAME based, no output is produced.")
+                .arg(arg!(<VPXPATH> "The path to the vpx file").required(true)),
+        )
 }
 
 fn open_or_fail(vbs_path: &Path, config: Option<&ResolvedConfig>) -> io::Result<ExitCode> {