From: Karthik Nayak <karthik.188@xxxxxxxxx>
In 'tag.c' we can print N lines from the annotation of the tag using
the '-n<num>' option. Copy code from 'tag.c' to 'ref-filter' and
modify 'ref-filter' to support printing of N lines from the annotation
of tags.
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 | 2 +-
builtin/tag.c | 4 ++++
ref-filter.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++-
ref-filter.h | 9 +++++++--
4 files changed, 62 insertions(+), 4 deletions(-)
diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index 40f343b..e4a4f8a 100644
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -74,7 +74,7 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
if (!maxcount || array.nr < maxcount)
maxcount = array.nr;
for (i = 0; i < maxcount; i++)
- show_ref_array_item(array.items[i], format, quote_style);
+ show_ref_array_item(array.items[i], format, quote_style, 0);
ref_array_clear(&array);
return 0;
}
diff --git a/builtin/tag.c b/builtin/tag.c
index 471d6b1..0fc7557 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -185,6 +185,10 @@ static enum contains_result contains(struct commit *candidate,
return contains_test(candidate, want);
}
+/*
+ * Currently duplicated in ref-filter, will eventually be removed as
+ * we port tag.c to use ref-filter APIs.
+ */
static void show_tag_lines(const struct object_id *oid, int lines)
{
int i;
diff --git a/ref-filter.c b/ref-filter.c
index 515655b..9bdfef0 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -1311,7 +1311,51 @@ static void reset_formatting_state(struct ref_formatting_state *state)
state->quote_style = quote_style;
}
-void show_ref_array_item(struct ref_array_item *info, const char *format, int quote_style)
+/*
+ * If 'lines' is greater than 0, print that many lines from the given
+ * object_id 'oid'.
+ */
+static void show_tag_lines(const struct object_id *oid, int lines)
+{
+ int i;
+ unsigned long size;
+ enum object_type type;
+ char *buf, *sp, *eol;
+ size_t len;
+
+ buf = read_sha1_file(oid->hash, &type, &size);
+ if (!buf)
+ die_errno("unable to read object %s", oid_to_hex(oid));
+ if (type != OBJ_COMMIT && type != OBJ_TAG)
+ goto free_return;
+ if (!size)
+ die("an empty %s object %s?",
+ typename(type), oid_to_hex(oid));
+
+ /* skip header */
+ sp = strstr(buf, "\n\n");
+ if (!sp)
+ goto free_return;
+
+ /* only take up to "lines" lines, and strip the signature from a tag */
+ if (type == OBJ_TAG)
+ size = parse_signature(buf, size);
+ for (i = 0, sp += 2; i < lines && sp < buf + size; i++) {
+ if (i)
+ printf("\n ");
+ eol = memchr(sp, '\n', size - (sp - buf));
+ len = eol ? eol - sp : size - (sp - buf);
+ fwrite(sp, len, 1, stdout);
+ if (!eol)
+ break;
+ sp = eol + 1;
+ }
+free_return:
+ free(buf);
+}
+
+void show_ref_array_item(struct ref_array_item *info, const char *format,
+ int quote_style, unsigned int lines)
{
const char *cp, *sp, *ep;
struct ref_formatting_state state;
@@ -1346,6 +1390,11 @@ void show_ref_array_item(struct ref_array_item *info, const char *format, int qu
resetv.s = color;
print_value(&resetv, &state);
}
+ if (lines > 0) {
+ struct object_id oid;
+ hashcpy(oid.hash, info->objectname);
+ show_tag_lines(&oid, lines);
+ }
putchar('\n');
}
diff --git a/ref-filter.h b/ref-filter.h
index 1956f67..3e05fa0 100644
--- a/ref-filter.h
+++ b/ref-filter.h
@@ -62,6 +62,7 @@ struct ref_filter {
struct commit *merge_commit;
unsigned int with_commit_tag_algo : 1;
+ unsigned int lines;
};
struct ref_filter_cbdata {
@@ -93,8 +94,12 @@ int parse_ref_filter_atom(const char *atom, const char *ep);
int verify_ref_format(const char *format);
/* Sort the given ref_array as per the ref_sorting provided */
void ref_array_sort(struct ref_sorting *sort, struct ref_array *array);
-/* Print the ref using the given format and quote_style */
-void show_ref_array_item(struct ref_array_item *info, const char *format, int quote_style);
+/*
+ * Print the ref using the given format and quote_style. If 'lines' > 0,
+ * print that many lines of the the given ref.
+ */
+void show_ref_array_item(struct ref_array_item *info, const char *format,
+ int quote_style, unsigned int lines);
/* Callback function for parsing the sort option */
int parse_opt_ref_sorting(const struct option *opt, const char *arg, int unset);
/* Default sort option based on refname */
--
2.4.6
--
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