From: Michael Haggerty <mhagger@alum.mit.edu>
To: Junio C Hamano <gitster@pobox.com>
Cc: Brad King <brad.king@kitware.com>, Jeff King <peff@peff.net>,
Vicent Marti <tanoku@gmail.com>,
Johan Herland <johan@herland.net>,
git@vger.kernel.org, Michael Haggerty <mhagger@alum.mit.edu>
Subject: [PATCH 10/26] update-ref.c: Extract a new function, parse_refname()
Date: Mon, 10 Mar 2014 13:46:27 +0100 [thread overview]
Message-ID: <1394455603-2968-11-git-send-email-mhagger@alum.mit.edu> (raw)
In-Reply-To: <1394455603-2968-1-git-send-email-mhagger@alum.mit.edu>
There is no reason to obscure the fact that parse_first_arg() always
parses refnames. Form the new function by combining parse_first_arg()
and update_store_ref_name().
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
builtin/update-ref.c | 90 ++++++++++++++++++++++++----------------------------
1 file changed, 41 insertions(+), 49 deletions(-)
diff --git a/builtin/update-ref.c b/builtin/update-ref.c
index 51adf2d..0dc2061 100644
--- a/builtin/update-ref.c
+++ b/builtin/update-ref.c
@@ -35,14 +35,6 @@ static struct ref_update *update_alloc(void)
return update;
}
-static void update_store_ref_name(struct ref_update *update,
- const char *ref_name)
-{
- if (check_refname_format(ref_name, REFNAME_ALLOW_ONELEVEL))
- die("invalid ref format: %s", ref_name);
- update->ref_name = xstrdup(ref_name);
-}
-
static void update_store_new_sha1(struct ref_update *update,
const char *newvalue)
{
@@ -86,23 +78,35 @@ static const char *parse_arg(const char *next, struct strbuf *arg)
}
/*
- * Parse the argument immediately after "command SP". If not -z, then
- * handle C-quoting. Write the argument to arg. Set *next to point
- * at the character that terminates the argument. Die if C-quoting is
- * malformed.
+ * Parse the reference name immediately after "command SP". If not
+ * -z, then handle C-quoting. Return a pointer to a newly allocated
+ * string containing the name of the reference, or NULL if there was
+ * an error. Update *next to point at the character that terminates
+ * the argument. Die if C-quoting is malformed or the reference name
+ * is invalid.
*/
-static void parse_first_arg(struct strbuf *input, const char **next,
- struct strbuf *arg)
+static char *parse_refname(struct strbuf *input, const char **next)
{
- strbuf_reset(arg);
+ struct strbuf ref = STRBUF_INIT;
+
if (line_termination) {
/* Without -z, use the next argument */
- *next = parse_arg(*next, arg);
+ *next = parse_arg(*next, &ref);
} else {
/* With -z, use everything up to the next NUL */
- strbuf_addstr(arg, *next);
- *next += arg->len;
+ strbuf_addstr(&ref, *next);
+ *next += ref.len;
+ }
+
+ if (!ref.len) {
+ strbuf_release(&ref);
+ return NULL;
}
+
+ if (check_refname_format(ref.buf, REFNAME_ALLOW_ONELEVEL))
+ die("invalid ref format: %s", ref.buf);
+
+ return strbuf_detach(&ref, NULL);
}
/*
@@ -150,111 +154,99 @@ static int parse_next_arg(struct strbuf *input, const char **next,
static const char *parse_cmd_update(struct strbuf *input, const char *next)
{
- struct strbuf ref = STRBUF_INIT;
struct strbuf newvalue = STRBUF_INIT;
struct strbuf oldvalue = STRBUF_INIT;
struct ref_update *update;
update = update_alloc();
- parse_first_arg(input, &next, &ref);
- if (ref.buf[0])
- update_store_ref_name(update, ref.buf);
- else
+ update->ref_name = parse_refname(input, &next);
+ if (!update->ref_name)
die("update line missing <ref>");
if (!parse_next_arg(input, &next, &newvalue))
update_store_new_sha1(update, newvalue.buf);
else
- die("update %s missing <newvalue>", ref.buf);
+ die("update %s missing <newvalue>", update->ref_name);
if (!parse_next_arg(input, &next, &oldvalue)) {
update_store_old_sha1(update, oldvalue.buf);
if (*next != line_termination)
- die("update %s has extra input: %s", ref.buf, next);
+ die("update %s has extra input: %s", update->ref_name, next);
} else if (!line_termination)
- die("update %s missing [<oldvalue>] NUL", ref.buf);
+ die("update %s missing [<oldvalue>] NUL", update->ref_name);
return next;
}
static const char *parse_cmd_create(struct strbuf *input, const char *next)
{
- struct strbuf ref = STRBUF_INIT;
struct strbuf newvalue = STRBUF_INIT;
struct ref_update *update;
update = update_alloc();
- parse_first_arg(input, &next, &ref);
- if (ref.buf[0])
- update_store_ref_name(update, ref.buf);
- else
+ update->ref_name = parse_refname(input, &next);
+ if (!update->ref_name)
die("create line missing <ref>");
if (!parse_next_arg(input, &next, &newvalue))
update_store_new_sha1(update, newvalue.buf);
else
- die("create %s missing <newvalue>", ref.buf);
+ die("create %s missing <newvalue>", update->ref_name);
if (is_null_sha1(update->new_sha1))
- die("create %s given zero new value", ref.buf);
+ die("create %s given zero new value", update->ref_name);
if (*next != line_termination)
- die("create %s has extra input: %s", ref.buf, next);
+ die("create %s has extra input: %s", update->ref_name, next);
return next;
}
static const char *parse_cmd_delete(struct strbuf *input, const char *next)
{
- struct strbuf ref = STRBUF_INIT;
struct strbuf oldvalue = STRBUF_INIT;
struct ref_update *update;
update = update_alloc();
- parse_first_arg(input, &next, &ref);
- if (ref.buf[0])
- update_store_ref_name(update, ref.buf);
- else
+ update->ref_name = parse_refname(input, &next);
+ if (!update->ref_name)
die("delete line missing <ref>");
if (!parse_next_arg(input, &next, &oldvalue)) {
update_store_old_sha1(update, oldvalue.buf);
if (update->have_old && is_null_sha1(update->old_sha1))
- die("delete %s given zero old value", ref.buf);
+ die("delete %s given zero old value", update->ref_name);
} else if (!line_termination)
- die("delete %s missing [<oldvalue>] NUL", ref.buf);
+ die("delete %s missing [<oldvalue>] NUL", update->ref_name);
if (*next != line_termination)
- die("delete %s has extra input: %s", ref.buf, next);
+ die("delete %s has extra input: %s", update->ref_name, next);
return next;
}
static const char *parse_cmd_verify(struct strbuf *input, const char *next)
{
- struct strbuf ref = STRBUF_INIT;
struct strbuf value = STRBUF_INIT;
struct ref_update *update;
update = update_alloc();
- parse_first_arg(input, &next, &ref);
- if (ref.buf[0])
- update_store_ref_name(update, ref.buf);
- else
+ update->ref_name = parse_refname(input, &next);
+ if (!update->ref_name)
die("verify line missing <ref>");
if (!parse_next_arg(input, &next, &value)) {
update_store_old_sha1(update, value.buf);
hashcpy(update->new_sha1, update->old_sha1);
} else if (!line_termination)
- die("verify %s missing [<oldvalue>] NUL", ref.buf);
+ die("verify %s missing [<oldvalue>] NUL", update->ref_name);
if (*next != line_termination)
- die("verify %s has extra input: %s", ref.buf, next);
+ die("verify %s has extra input: %s", update->ref_name, next);
return next;
}
--
1.9.0
next prev parent reply other threads:[~2014-03-10 12:48 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-10 12:46 [PATCH 00/26] Clean up update-refs --stdin and implement ref_transaction Michael Haggerty
2014-03-10 12:46 ` [PATCH 01/26] t1400: Fix name and expected result of one test Michael Haggerty
2014-03-10 12:46 ` [PATCH 02/26] t1400: Provide sensible input to the command Michael Haggerty
2014-03-10 12:46 ` [PATCH 03/26] t1400: Pass a legitimate <newvalue> to update command Michael Haggerty
2014-03-10 17:03 ` Brad King
2014-03-10 21:38 ` Michael Haggerty
2014-03-11 12:49 ` Brad King
2014-03-11 20:06 ` Junio C Hamano
2014-03-11 21:41 ` Brad King
2014-03-20 17:01 ` Michael Haggerty
2014-03-10 12:46 ` [PATCH 04/26] parse_arg(): Really test that argument is properly terminated Michael Haggerty
2014-03-10 12:46 ` [PATCH 05/26] t1400: Add some more tests involving quoted arguments Michael Haggerty
2014-03-10 13:53 ` Johan Herland
2014-03-10 12:46 ` [PATCH 06/26] refs.h: Rename the action_on_err constants Michael Haggerty
2014-03-10 12:46 ` [PATCH 07/26] update_refs(): Fix constness Michael Haggerty
2014-03-10 12:46 ` [PATCH 08/26] update-ref --stdin: Read the whole input at once Michael Haggerty
2014-03-10 12:46 ` [PATCH 09/26] parse_cmd_verify(): Copy old_sha1 instead of evaluating <oldvalue> twice Michael Haggerty
2014-03-10 12:46 ` Michael Haggerty [this message]
2014-03-10 12:46 ` [PATCH 11/26] update-ref --stdin: Improve error messages for invalid values Michael Haggerty
2014-03-10 12:46 ` [PATCH 12/26] update-ref --stdin: Make error messages more consistent Michael Haggerty
2014-03-10 12:46 ` [PATCH 13/26] update-ref --stdin: Simplify error messages for missing oldvalues Michael Haggerty
2014-03-10 17:08 ` Brad King
2014-03-10 17:12 ` Brad King
2014-03-10 12:46 ` [PATCH 14/26] update-ref.c: Extract a new function, parse_next_sha1() Michael Haggerty
2014-03-10 12:46 ` [PATCH 15/26] update-ref --stdin: Improve the error message for unexpected EOF Michael Haggerty
2014-03-10 12:46 ` [PATCH 16/26] update-ref --stdin: Harmonize error messages Michael Haggerty
2014-03-10 12:46 ` [PATCH 17/26] refs: Add a concept of a reference transaction Michael Haggerty
2014-03-10 12:46 ` [PATCH 18/26] update-ref --stdin: Reimplement using reference transactions Michael Haggerty
2014-03-10 12:46 ` [PATCH 19/26] refs: Remove API function update_refs() Michael Haggerty
2014-03-10 12:46 ` [PATCH 20/26] struct ref_update: Rename field "ref_name" to "refname" Michael Haggerty
2014-03-10 12:46 ` [PATCH 21/26] struct ref_update: Store refname as a FLEX_ARRAY Michael Haggerty
2014-03-10 12:46 ` [PATCH 22/26] commit_ref_transaction(): Introduce temporary variables Michael Haggerty
2014-03-10 12:46 ` [PATCH 23/26] struct ref_update: Add a lock member Michael Haggerty
2014-03-10 12:46 ` [PATCH 24/26] struct ref_update: Add type field Michael Haggerty
2014-03-10 12:46 ` [PATCH 25/26] commit_ref_transaction(): Also free the ref_transaction Michael Haggerty
2014-03-10 12:46 ` [PATCH 26/26] commit_ref_transaction(): Work with transaction->updates in place Michael Haggerty
2014-03-10 17:44 ` [PATCH 00/26] Clean up update-refs --stdin and implement ref_transaction Brad King
2014-03-10 21:46 ` Michael Haggerty
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