Date: Thu, 28 Aug 2014 16:42:37 -0700
Some functions that take a strbuf argument to append an error treat
!err as an indication that the message should be suppressed (e.g.,
ref_update_reject_duplicates). Others write the message to stderr on
!err (e.g., repack_without_refs). Others crash (e.g.,
ref_transaction_update).
Some of these behaviors are for historical reasons and others were
accidents. Luckily no callers pass err == NULL any more. Simplify
by consistently requiring the strbuf argument.
Signed-off-by: Jonathan Nieder <jrnieder@xxxxxxxxx>
---
Since v21:
- dropped spurious 'to' from commit message
refs.c | 46 +++++++++++++++++++++++++++-------------------
1 file changed, 27 insertions(+), 19 deletions(-)
diff --git a/refs.c b/refs.c
index 0d3abb1..e13f843 100644
--- a/refs.c
+++ b/refs.c
@@ -2596,6 +2596,8 @@ int repack_without_refs(const char **refnames, int n, struct strbuf *err)
struct string_list_item *ref_to_delete;
int i, ret, removed = 0;
+ assert(err);
+
/* Look for a packed ref */
for (i = 0; i < n; i++)
if (get_packed_ref(refnames[i]))
@@ -2606,13 +2608,8 @@ int repack_without_refs(const char **refnames, int n, struct strbuf *err)
return 0; /* no refname exists in packed refs */
if (lock_packed_refs(0)) {
- if (err) {
- unable_to_lock_message(git_path("packed-refs"), errno,
- err);
- return -1;
- }
- unable_to_lock_error(git_path("packed-refs"), errno);
- return error("cannot delete '%s' from packed refs", refnames[i]);
+ unable_to_lock_message(git_path("packed-refs"), errno, err);
+ return -1;
}
packed = get_packed_refs(&ref_cache);
@@ -2638,7 +2635,7 @@ int repack_without_refs(const char **refnames, int n, struct strbuf *err)
/* Write what remains */
ret = commit_packed_refs();
- if (ret && err)
+ if (ret)
strbuf_addf(err, "unable to overwrite old ref-pack file: %s",
strerror(errno));
return ret;
@@ -2646,6 +2643,8 @@ int repack_without_refs(const char **refnames, int n, struct strbuf *err)
static int delete_ref_loose(struct ref_lock *lock, int flag, struct strbuf *err)
{
+ assert(err);
+
if (!(flag & REF_ISPACKED) || flag & REF_ISSYMREF) {
/* loose */
int res, i = strlen(lock->lk->filename) - 5; /* .lock */
@@ -3495,6 +3494,8 @@ struct ref_transaction {
struct ref_transaction *ref_transaction_begin(struct strbuf *err)
{
+ assert(err);
+
return xcalloc(1, sizeof(struct ref_transaction));
}
@@ -3534,6 +3535,8 @@ int ref_transaction_update(struct ref_transaction *transaction,
{
struct ref_update *update;
+ assert(err);
+
if (transaction->state != REF_TRANSACTION_OPEN)
die("BUG: update called for transaction that is not open");
@@ -3566,6 +3569,8 @@ int ref_transaction_create(struct ref_transaction *transaction,
{
struct ref_update *update;
+ assert(err);
+
if (transaction->state != REF_TRANSACTION_OPEN)
die("BUG: create called for transaction that is not open");
@@ -3597,6 +3602,8 @@ int ref_transaction_delete(struct ref_transaction *transaction,
{
struct ref_update *update;
+ assert(err);
+
if (transaction->state != REF_TRANSACTION_OPEN)
die("BUG: delete called for transaction that is not open");
@@ -3659,13 +3666,14 @@ static int ref_update_reject_duplicates(struct ref_update **updates, int n,
struct strbuf *err)
{
int i;
+
+ assert(err);
+
for (i = 1; i < n; i++)
if (!strcmp(updates[i - 1]->refname, updates[i]->refname)) {
- const char *str =
- "Multiple updates for ref '%s' not allowed.";
- if (err)
- strbuf_addf(err, str, updates[i]->refname);
-
+ strbuf_addf(err,
+ "Multiple updates for ref '%s' not allowed.",
+ updates[i]->refname);
return 1;
}
return 0;
@@ -3679,6 +3687,8 @@ int ref_transaction_commit(struct ref_transaction *transaction,
int n = transaction->nr;
struct ref_update **updates = transaction->updates;
+ assert(err);
+
if (transaction->state != REF_TRANSACTION_OPEN)
die("BUG: commit called for transaction that is not open");
@@ -3715,9 +3725,8 @@ int ref_transaction_commit(struct ref_transaction *transaction,
ret = (errno == ENOTDIR)
? TRANSACTION_NAME_CONFLICT
: TRANSACTION_GENERIC_ERROR;
- if (err)
- strbuf_addf(err, "Cannot lock the ref '%s'.",
- update->refname);
+ strbuf_addf(err, "Cannot lock the ref '%s'.",
+ update->refname);
goto cleanup;
}
}
@@ -3730,9 +3739,8 @@ int ref_transaction_commit(struct ref_transaction *transaction,
if (write_ref_sha1(update->lock, update->new_sha1,
update->msg)) {
update->lock = NULL; /* freed by write_ref_sha1 */
- if (err)
- strbuf_addf(err, "Cannot update the ref '%s'.",
- update->refname);
+ strbuf_addf(err, "Cannot update the ref '%s'.",
+ update->refname);
ret = TRANSACTION_GENERIC_ERROR;
goto cleanup;
}
--
2.1.0.rc2.206.gedb03e5
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