From 13092a916d7b8211fd828a6a7ee0d3cefff995e1 Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Wed, 12 Oct 2016 11:20:23 -0700 Subject: [PATCH] cocci: refactor common patterns to use xstrdup_or_null() d64ea0f83b ("git-compat-util: add xstrdup_or_null helper", 2015-01-12) added a handy wrapper that allows us to get a duplicate of a string or NULL if the original is NULL, but a handful of codepath predate its introduction or just weren't aware of it. Signed-off-by: Junio C Hamano --- contrib/coccinelle/xstrdup_or_null.cocci | 7 +++++++ git.c | 3 +-- imap-send.c | 6 ++---- mailmap.c | 6 ++---- refs.c | 3 +-- send-pack.c | 3 +-- trailer.c | 9 +++------ 7 files changed, 17 insertions(+), 20 deletions(-) create mode 100644 contrib/coccinelle/xstrdup_or_null.cocci diff --git a/contrib/coccinelle/xstrdup_or_null.cocci b/contrib/coccinelle/xstrdup_or_null.cocci new file mode 100644 index 0000000000..3fceef132b --- /dev/null +++ b/contrib/coccinelle/xstrdup_or_null.cocci @@ -0,0 +1,7 @@ +@@ +expression E; +expression V; +@@ +- if (E) +- V = xstrdup(E); ++ V = xstrdup_or_null(E); diff --git a/git.c b/git.c index 0f1937fd0c..f914490e14 100644 --- a/git.c +++ b/git.c @@ -35,8 +35,7 @@ static void save_env_before_alias(void) orig_cwd = xgetcwd(); for (i = 0; i < ARRAY_SIZE(env_names); i++) { orig_env[i] = getenv(env_names[i]); - if (orig_env[i]) - orig_env[i] = xstrdup(orig_env[i]); + orig_env[i] = xstrdup_or_null(orig_env[i]); } } diff --git a/imap-send.c b/imap-send.c index 0f5f4760e9..9514ddc565 100644 --- a/imap-send.c +++ b/imap-send.c @@ -1082,10 +1082,8 @@ static struct imap_store *imap_open_store(struct imap_server_conf *srvc, char *f cred.protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap"); cred.host = xstrdup(srvc->host); - if (srvc->user) - cred.username = xstrdup(srvc->user); - if (srvc->pass) - cred.password = xstrdup(srvc->pass); + cred.username = xstrdup_or_null(srvc->user); + cred.password = xstrdup_or_null(srvc->pass); credential_fill(&cred); diff --git a/mailmap.c b/mailmap.c index b5c521fdea..c1a79c100c 100644 --- a/mailmap.c +++ b/mailmap.c @@ -103,10 +103,8 @@ static void add_mapping(struct string_list *map, } else { struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info)); debug_mm("mailmap: adding (complex) entry for '%s'\n", old_email); - if (new_name) - mi->name = xstrdup(new_name); - if (new_email) - mi->email = xstrdup(new_email); + mi->name = xstrdup_or_null(new_name); + mi->email = xstrdup_or_null(new_email); string_list_insert(&me->namemap, old_name)->util = mi; } diff --git a/refs.c b/refs.c index b4e7cac7b2..62055ab091 100644 --- a/refs.c +++ b/refs.c @@ -791,8 +791,7 @@ struct ref_update *ref_transaction_add_update( hashcpy(update->new_sha1, new_sha1); if (flags & REF_HAVE_OLD) hashcpy(update->old_sha1, old_sha1); - if (msg) - update->msg = xstrdup(msg); + update->msg = xstrdup_or_null(msg); return update; } diff --git a/send-pack.c b/send-pack.c index 90f2ac51a7..6195b43e9a 100644 --- a/send-pack.c +++ b/send-pack.c @@ -181,8 +181,7 @@ static int receive_status(int in, struct ref *refs) hint->status = REF_STATUS_REMOTE_REJECT; ret = -1; } - if (msg) - hint->remote_status = xstrdup(msg); + hint->remote_status = xstrdup_or_null(msg); /* start our next search from the next ref */ hint = hint->next; } diff --git a/trailer.c b/trailer.c index c6ea9ac64d..aecaf9232a 100644 --- a/trailer.c +++ b/trailer.c @@ -428,12 +428,9 @@ static int set_if_missing(struct conf_info *item, const char *value) static void duplicate_conf(struct conf_info *dst, struct conf_info *src) { *dst = *src; - if (src->name) - dst->name = xstrdup(src->name); - if (src->key) - dst->key = xstrdup(src->key); - if (src->command) - dst->command = xstrdup(src->command); + dst->name = xstrdup_or_null(src->name); + dst->key = xstrdup_or_null(src->key); + dst->command = xstrdup_or_null(src->command); } static struct trailer_item *get_conf_item(const char *name)