[PATCH v6 06/11] for-each-ref: rename some functions and make them public

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Rename some of the functions and make them publicly available.
This is a preparatory step for moving code from 'for-each-ref'
to 'ref-filter' to make meaningful, targeted services available to
other commands via public APIs.

Functions renamed are:
parse_atom()		-> 	parse_ref_filter_atom()
verify_format()		-> 	verify_ref_format()
get_value()		-> 	get_ref_atom_value()
grab_single_ref()	-> 	ref_filter_handler()
sort_refs()		->	ref_array_sort()
show_ref()		->	show_ref_array_item()
default_sort()		->	ref_default_sorting()
opt_parse_sort()	->	parse_opt_ref_sorting()
cmp_ref_sort()		->	cmp_ref_sorting()

Rename 'struct ref_sort' to 'struct ref_sorting' in this context.

Based-on-patch-by: Jeff King <peff@xxxxxxxx>
Mentored-by: Christian Couder <christian.couder@xxxxxxxxx>
Mentored-by: Matthieu Moy <matthieu.moy@xxxxxxxxxxxxxxx>
Signed-off-by: Karthik Nayak <karthik.188@xxxxxxxxx>
---
 builtin/for-each-ref.c | 68 +++++++++++++++++++++++++-------------------------
 1 file changed, 34 insertions(+), 34 deletions(-)

diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index a65a4db..11552ad 100644
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -25,8 +25,8 @@ struct atom_value {
 	unsigned long ul; /* used for sorting when not FIELD_STR */
 };
 
-struct ref_sort {
-	struct ref_sort *next;
+struct ref_sorting {
+	struct ref_sorting *next;
 	int atom; /* index into 'struct atom_value *' array */
 	unsigned reverse : 1;
 };
@@ -113,7 +113,7 @@ static int need_color_reset_at_eol;
 /*
  * Used to parse format string and sort specifiers
  */
-static int parse_atom(const char *atom, const char *ep)
+int parse_ref_filter_atom(const char *atom, const char *ep)
 {
 	const char *sp;
 	int i, at;
@@ -190,7 +190,7 @@ static const char *find_next(const char *cp)
  * Make sure the format string is well formed, and parse out
  * the used atoms.
  */
-static int verify_format(const char *format)
+int verify_ref_format(const char *format)
 {
 	const char *cp, *sp;
 
@@ -202,7 +202,7 @@ static int verify_format(const char *format)
 		if (!ep)
 			return error("malformed format string %s", sp);
 		/* sp points at "%(" and ep points at the closing ")" */
-		at = parse_atom(sp + 2, ep);
+		at = parse_ref_filter_atom(sp + 2, ep);
 		cp = ep + 1;
 
 		if (skip_prefix(used_atom[at], "color:", &color))
@@ -409,7 +409,7 @@ static void grab_date(const char *buf, struct atom_value *v, const char *atomnam
 	/*
 	 * We got here because atomname ends in "date" or "date<something>";
 	 * it's not possible that <something> is not ":<format>" because
-	 * parse_atom() wouldn't have allowed it, so we can assume that no
+	 * parse_ref_filter_atom() wouldn't have allowed it, so we can assume that no
 	 * ":" means no format is specified, and use the default.
 	 */
 	formatp = strchr(atomname, ':');
@@ -849,7 +849,7 @@ static void populate_value(struct ref_array_item *ref)
  * Given a ref, return the value for the atom.  This lazily gets value
  * out of the object by calling populate value.
  */
-static void get_value(struct ref_array_item *ref, int atom, struct atom_value **v)
+static void get_ref_atom_value(struct ref_array_item *ref, int atom, struct atom_value **v)
 {
 	if (!ref->value) {
 		populate_value(ref);
@@ -899,8 +899,7 @@ static struct ref_array_item *new_ref_array_item(const char *refname,
  * A call-back given to for_each_ref().  Filter refs and keep them for
  * later object processing.
  */
-static int grab_single_ref(const char *refname, const struct object_id *oid,
-			   int flag, void *cb_data)
+int ref_filter_handler(const char *refname, const struct object_id *oid, int flag, void *cb_data)
 {
 	struct ref_filter_cbdata *ref_cbdata = cb_data;
 	struct ref_filter *filter = &ref_cbdata->filter;
@@ -946,14 +945,14 @@ void ref_array_clear(struct ref_array *array)
 	array->nr = array->alloc = 0;
 }
 
-static int cmp_ref_sort(struct ref_sort *s, struct ref_array_item *a, struct ref_array_item *b)
+static int cmp_ref_sorting(struct ref_sorting *s, struct ref_array_item *a, struct ref_array_item *b)
 {
 	struct atom_value *va, *vb;
 	int cmp;
 	cmp_type cmp_type = used_atom_type[s->atom];
 
-	get_value(a, s->atom, &va);
-	get_value(b, s->atom, &vb);
+	get_ref_atom_value(a, s->atom, &va);
+	get_ref_atom_value(b, s->atom, &vb);
 	switch (cmp_type) {
 	case FIELD_STR:
 		cmp = strcmp(va->s, vb->s);
@@ -970,24 +969,24 @@ static int cmp_ref_sort(struct ref_sort *s, struct ref_array_item *a, struct ref
 	return (s->reverse) ? -cmp : cmp;
 }
 
-static struct ref_sort *ref_sort;
+static struct ref_sorting *ref_sorting;
 static int compare_refs(const void *a_, const void *b_)
 {
 	struct ref_array_item *a = *((struct ref_array_item **)a_);
 	struct ref_array_item *b = *((struct ref_array_item **)b_);
-	struct ref_sort *s;
+	struct ref_sorting *s;
 
-	for (s = ref_sort; s; s = s->next) {
-		int cmp = cmp_ref_sort(s, a, b);
+	for (s = ref_sorting; s; s = s->next) {
+		int cmp = cmp_ref_sorting(s, a, b);
 		if (cmp)
 			return cmp;
 	}
 	return 0;
 }
 
-static void sort_refs(struct ref_sort *sort, struct ref_array *array)
+void ref_array_sort(struct ref_sorting *sort, struct ref_array *array)
 {
-	ref_sort = sort;
+	ref_sorting = sort;
 	qsort(array->items, array->nr, sizeof(struct ref_array_item *), compare_refs);
 }
 
@@ -1055,7 +1054,7 @@ static void emit(const char *cp, const char *ep)
 	}
 }
 
-static void show_ref(struct ref_array_item *info, const char *format, int quote_style)
+void show_ref_array_item(struct ref_array_item *info, const char *format, int quote_style)
 {
 	const char *cp, *sp, *ep;
 
@@ -1065,7 +1064,7 @@ static void show_ref(struct ref_array_item *info, const char *format, int quote_
 		ep = strchr(sp, ')');
 		if (cp < sp)
 			emit(cp, sp);
-		get_value(info, parse_atom(sp + 2, ep), &atomv);
+		get_ref_atom_value(info, parse_ref_filter_atom(sp + 2, ep), &atomv);
 		print_value(atomv, quote_style);
 	}
 	if (*cp) {
@@ -1084,21 +1083,22 @@ static void show_ref(struct ref_array_item *info, const char *format, int quote_
 	putchar('\n');
 }
 
-static struct ref_sort *default_sort(void)
+/*  If no sorting option is given, use refname to sort as default */
+struct ref_sorting *ref_default_sorting(void)
 {
 	static const char cstr_name[] = "refname";
 
-	struct ref_sort *sort = xcalloc(1, sizeof(*sort));
+	struct ref_sorting *sort = xcalloc(1, sizeof(*sort));
 
 	sort->next = NULL;
-	sort->atom = parse_atom(cstr_name, cstr_name + strlen(cstr_name));
+	sort->atom = parse_ref_filter_atom(cstr_name, cstr_name + strlen(cstr_name));
 	return sort;
 }
 
-static int opt_parse_sort(const struct option *opt, const char *arg, int unset)
+int parse_opt_ref_sorting(const struct option *opt, const char *arg, int unset)
 {
-	struct ref_sort **sort_tail = opt->value;
-	struct ref_sort *s;
+	struct ref_sorting **sort_tail = opt->value;
+	struct ref_sorting *s;
 	int len;
 
 	if (!arg) /* should --no-sort void the list ? */
@@ -1113,7 +1113,7 @@ static int opt_parse_sort(const struct option *opt, const char *arg, int unset)
 		arg++;
 	}
 	len = strlen(arg);
-	s->atom = parse_atom(arg, arg+len);
+	s->atom = parse_ref_filter_atom(arg, arg+len);
 	return 0;
 }
 
@@ -1126,7 +1126,7 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
 {
 	int i;
 	const char *format = "%(objectname) %(objecttype)\t%(refname)";
-	struct ref_sort *sort = NULL, **sort_tail = &sort;
+	struct ref_sorting *sort = NULL, **sort_tail = &sort;
 	int maxcount = 0, quote_style = 0;
 	struct ref_filter_cbdata ref_cbdata;
 
@@ -1144,7 +1144,7 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
 		OPT_INTEGER( 0 , "count", &maxcount, N_("show only <n> matched refs")),
 		OPT_STRING(  0 , "format", &format, N_("format"), N_("format to use for the output")),
 		OPT_CALLBACK(0 , "sort", sort_tail, N_("key"),
-			    N_("field name to sort on"), &opt_parse_sort),
+			    N_("field name to sort on"), &parse_opt_ref_sorting),
 		OPT_END(),
 	};
 
@@ -1157,25 +1157,25 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
 		error("more than one quoting style?");
 		usage_with_options(for_each_ref_usage, opts);
 	}
-	if (verify_format(format))
+	if (verify_ref_format(format))
 		usage_with_options(for_each_ref_usage, opts);
 
 	if (!sort)
-		sort = default_sort();
+		sort = ref_default_sorting();
 
 	/* for warn_ambiguous_refs */
 	git_config(git_default_config, NULL);
 
 	memset(&ref_cbdata, 0, sizeof(ref_cbdata));
 	ref_cbdata.filter.name_patterns = argv;
-	for_each_rawref(grab_single_ref, &ref_cbdata);
+	for_each_rawref(ref_filter_handler, &ref_cbdata);
 
-	sort_refs(sort, &ref_cbdata.array);
+	ref_array_sort(sort, &ref_cbdata.array);
 
 	if (!maxcount || ref_cbdata.array.nr < maxcount)
 		maxcount = ref_cbdata.array.nr;
 	for (i = 0; i < maxcount; i++)
-		show_ref(ref_cbdata.array.items[i], format, quote_style);
+		show_ref_array_item(ref_cbdata.array.items[i], format, quote_style);
 	ref_array_clear(&ref_cbdata.array);
 	return 0;
 }
-- 
2.4.2

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