[PATCH v7 02/11] ref-filter: make `color` use `ref_formatting_state`

[Karthik Nayak <karthik.188@gmail.com>]

Convert the 'color' atom to behave as a modifier atom and make it use
'ref_formatting_state' which was introduced in the previous patch.

Helped-by: Junio C Hamano <gitster@pobox.com>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
---
 ref-filter.c | 10 ++++++++--
 ref-filter.h |  4 +++-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/ref-filter.c b/ref-filter.c
index d6510a6..9a63d25 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -662,6 +662,8 @@ static void populate_value(struct ref_array_item *ref)
 			if (color_parse(name + 6, color) < 0)
 				die(_("unable to parse format"));
 			v->s = xstrdup(color);
+			v->color = 1;
+			v->modifier_atom = 1;
 			continue;
 		} else if (!strcmp(name, "flag")) {
 			char buf[256], *cp = buf;
@@ -1195,7 +1197,10 @@ void ref_array_sort(struct ref_sorting *sorting, struct ref_array *array)
 static void apply_formatting_state(struct ref_formatting_state *state,
 				   const char *buf, struct strbuf *value)
 {
-	/* Eventually we'll format based on the ref_formatting_state */
+	if (state->color) {
+		strbuf_addstr(value, state->color);
+		state->color = NULL;
+	}
 	strbuf_addstr(value, buf);
 }
 
@@ -1278,7 +1283,8 @@ static void emit(const char *cp, const char *ep,
 static void store_formatting_state(struct ref_formatting_state *state,
 				   struct atom_value *atomv)
 {
-	/*  Here the 'ref_formatting_state' variable will be filled */
+	if (atomv->color)
+		state->color = atomv->s;
 }
 
 void show_ref_array_item(struct ref_array_item *info, const char *format, int quote_style)
diff --git a/ref-filter.h b/ref-filter.h
index 12e6a6b..5d33360 100644
--- a/ref-filter.h
+++ b/ref-filter.h
@@ -19,11 +19,13 @@
 struct atom_value {
 	const char *s;
 	unsigned long ul; /* used for sorting when not FIELD_STR */
-	unsigned int modifier_atom : 1; /*  atoms which act as modifiers for the next atom */
+	unsigned int modifier_atom : 1, /*  atoms which act as modifiers for the next atom */
+		color : 1;
 };
 
 struct ref_formatting_state {
 	int quote_style;
+	const char *color;
 };
 
 struct ref_sorting {
-- 
2.4.6