[PATCH v6 08/15] [GSOC] ref-filter: add cat_file_mode in struct ref_format

["ZheNing Hu via GitGitGadget" <gitgitgadget@gmail.com>]

From: ZheNing Hu <adlternative@gmail.com>

Add `cat_file_mode` member in struct `ref_format`, when
`cat-file --batch` use ref-filter logic later, it can help
us reject atoms in verify_ref_format() which cat-file cannot
use, e.g. `%(refname)`, `%(push)`, `%(upstream)`...

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Hariom Verma <hariom18599@gmail.com>
Signed-off-by: ZheNing Hu <adlternative@gmail.com>
---
 ref-filter.c | 11 +++++++++--
 ref-filter.h |  1 +
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/ref-filter.c b/ref-filter.c
index 731e596eaa6..45122959eef 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -1021,8 +1021,15 @@ int verify_ref_format(struct ref_format *format)
 		if (at < 0)
 			die("%s", err.buf);
 
-		if (used_atom[at].atom_type == ATOM_REST)
-			die("this command reject atom %%(%.*s)", (int)(ep - sp - 2), sp + 2);
+		if ((!format->cat_file_mode && used_atom[at].atom_type == ATOM_REST) ||
+		    (format->cat_file_mode && (used_atom[at].atom_type == ATOM_FLAG ||
+					       used_atom[at].atom_type == ATOM_HEAD ||
+					       used_atom[at].atom_type == ATOM_PUSH ||
+					       used_atom[at].atom_type == ATOM_REFNAME ||
+					       used_atom[at].atom_type == ATOM_SYMREF ||
+					       used_atom[at].atom_type == ATOM_UPSTREAM ||
+					       used_atom[at].atom_type == ATOM_WORKTREEPATH)))
+			die(_("this command reject atom %%(%.*s)"), (int)(ep - sp - 2), sp + 2);
 
 		if ((format->quote_style == QUOTE_PYTHON ||
 		     format->quote_style == QUOTE_SHELL ||
diff --git a/ref-filter.h b/ref-filter.h
index 44e6dc05ac2..053980a6a42 100644
--- a/ref-filter.h
+++ b/ref-filter.h
@@ -78,6 +78,7 @@ struct ref_format {
 	 */
 	const char *format;
 	const char *rest;
+	int cat_file_mode;
 	int quote_style;
 	int use_rest;
 	int use_color;
-- 
gitgitgadget