Re: [PATCH v3 3/5] config: report config parse errors using cb

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On Thu, Sep 21, 2023 at 02:17:22PM -0700, Josh Steadmon wrote:
> diff --git a/bundle-uri.c b/bundle-uri.c
> index f93ca6a486..856bffdcad 100644
> --- a/bundle-uri.c
> +++ b/bundle-uri.c
> @@ -237,9 +237,7 @@ int bundle_uri_parse_config_format(const char *uri,
>  				   struct bundle_list *list)
>  {
>  	int result;
> -	struct config_parse_options opts = {
> -		.error_action = CONFIG_ERROR_ERROR,
> -	};
> +	struct config_parse_options opts = CP_OPTS_INIT(CONFIG_ERROR_ERROR);

I'm nit-picking, but I find this parameterized initializer macro to be a
little unusual w.r.t our usual conventions.

In terms of "usual conventions," I'm thinking about STRING_LIST_INIT_DUP
versus STRING_LIST_INIT_NODUP (as opposed to something like
STRING_LIST_INIT(DUP) or STRING_LIST_INIT(NODUP)).

Since there are only two possible values (the ones corresponding to
error() and die()) I wonder if something like CP_OPTS_INIT_ERROR and
CP_OPTS_INIT_DIE might be more appropriate. If you don't like either of
those, I'd suggest making the initializer a function instead of a
parameterized macro.

>  	if (!list->baseURI) {
>  		struct strbuf baseURI = STRBUF_INIT;
> diff --git a/config.c b/config.c
> index ff138500a2..0c4f1a2874 100644
> --- a/config.c
> +++ b/config.c
> @@ -55,7 +55,6 @@ struct config_source {
>  	enum config_origin_type origin_type;
>  	const char *name;
>  	const char *path;
> -	enum config_error_action default_error_action;
>  	int linenr;
>  	int eof;
>  	size_t total_len;
> @@ -185,13 +184,15 @@ static int handle_path_include(const struct key_value_info *kvi,
>  	}
>
>  	if (!access_or_die(path, R_OK, 0)) {
> +		struct config_parse_options config_opts = CP_OPTS_INIT(CONFIG_ERROR_DIE);
> +
>  		if (++inc->depth > MAX_INCLUDE_DEPTH)
>  			die(_(include_depth_advice), MAX_INCLUDE_DEPTH, path,
>  			    !kvi ? "<unknown>" :
>  			    kvi->filename ? kvi->filename :
>  			    "the command line");
>  		ret = git_config_from_file_with_options(git_config_include, path, inc,
> -							kvi->scope, NULL);
> +							kvi->scope, &config_opts);

...OK, so using the CONFIG_ERROR_DIE variant seems like the right choice
here because git_config_from_file_with_options() calls
do_config_from_file() which sets its default_error_action as
CONFIG_ERROR_DIE.

>  static uintmax_t get_unit_factor(const char *end)
> @@ -2023,7 +2052,6 @@ static int do_config_from_file(config_fn_t fn,
>  	top.origin_type = origin_type;
>  	top.name = name;
>  	top.path = path;
> -	top.default_error_action = CONFIG_ERROR_DIE;
>  	top.do_fgetc = config_file_fgetc;
>  	top.do_ungetc = config_file_ungetc;
>  	top.do_ftell = config_file_ftell;
> @@ -2037,8 +2065,10 @@ static int do_config_from_file(config_fn_t fn,
>  static int git_config_from_stdin(config_fn_t fn, void *data,
>  				 enum config_scope scope)
>  {
> +	struct config_parse_options config_opts = CP_OPTS_INIT(CONFIG_ERROR_DIE);
> +
>  	return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin,
> -				   data, scope, NULL);
> +				   data, scope, &config_opts);

Same here.

>  int git_config_from_file_with_options(config_fn_t fn, const char *filename,
> @@ -2061,8 +2091,10 @@ int git_config_from_file_with_options(config_fn_t fn, const char *filename,
>
>  int git_config_from_file(config_fn_t fn, const char *filename, void *data)
>  {
> +	struct config_parse_options config_opts = CP_OPTS_INIT(CONFIG_ERROR_DIE);
> +
>  	return git_config_from_file_with_options(fn, filename, data,
> -						 CONFIG_SCOPE_UNKNOWN, NULL);
> +						 CONFIG_SCOPE_UNKNOWN, &config_opts);
>  }

And here.

> @@ -2098,6 +2129,7 @@ int git_config_from_blob_oid(config_fn_t fn,
>  	char *buf;
>  	unsigned long size;
>  	int ret;
> +	struct config_parse_options config_opts = CP_OPTS_INIT(CONFIG_ERROR_ERROR);
>
>  	buf = repo_read_object_file(repo, oid, &type, &size);
>  	if (!buf)
> @@ -2108,7 +2140,7 @@ int git_config_from_blob_oid(config_fn_t fn,
>  	}
>
>  	ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size,
> -				  data, scope, NULL);
> +				  data, scope, &config_opts);
>  	free(buf);

This one uses git_config_from_mem(), which sets the default error action
to "CONFIG_ERROR_ERROR", so this transformation looks correct.

Thanks,
Taylor




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