Command line arguments handling overhaul

- login_server, char_server, map_server as well as the tools (mapcache)
  now have a common command line arguments handling mechanism.
- All of them now accept `--help` (`-h`), `--version` (`-v`) and
  `--load-plugin`.
- login_server now accepts `--login-config` and `--lan-config` instead
  of relying on positional arguments to override those files. The old
  syntax will no longer work, please update your custom startup scripts.
- char_server now accepts `--char-config`, `--inter-config`,
  `--lan-config` instead of relying on positional arguments. The old
  syntax will no longer work, please update your custom startup scripts.
- mapcache now accepts `--grf-list`, `--map-list`, `--map-cache`,
  `--rebuild` in place of, respectively, `-grf`, `-list`, `-cache`,
  `-rebuild`.
- A new macro `CMDLINEARG()` is provided, to help defining new command
  line argument handlers (i.e. in plugins). the `addArg()` call is still
  required, but its syntax has changed. The `help` argument is now of type
  `const char *` rather than a function pointer, and it is supposed to
  contain the message to show in the `--help` screen. Pass `NULL` if no
  help message is desired.

Signed-off-by: Haru <haru@dotalux.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/src/plugins/db2sql.c b/src/plugins/db2sql.c
index eda61d026..62ed80255 100644
--- a/src/plugins/db2sql.c
+++ b/src/plugins/db2sql.c
@@ -348,8 +348,10 @@ void do_db2sql(void) {
 CPCMD(db2sql) {
 	do_db2sql();
 }
-void db2sql_arg(char *param) {
+CMDLINEARG(db2sql)
+{
 	map->minimal = torun = true;
+	return true;
 }
 HPExport void server_preinit (void) {
 	SQL = GET_SYMBOL("SQL");
@@ -360,7 +362,7 @@ HPExport void server_preinit (void) {
 	libconfig = GET_SYMBOL("libconfig");
 	StrBuf = GET_SYMBOL("StrBuf");
 
-	addArg("--db2sql",false,db2sql_arg,NULL);
+	addArg("--db2sql",false,db2sql,NULL);
 }
 HPExport void plugin_init (void) {
 	addCPCommand("server:tools:db2sql",db2sql);