diff options
| author | SZEDER Gábor <szeder.dev@gmail.com> | 2019-01-25 15:25:17 +0300 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2019-01-28 03:21:09 +0300 |
| commit | 28c23cd4c3902449aff72cb9a4a703220be0d6ac (patch) | |
| tree | 5adc4148e4869d55f3e886f6778493facd325921 /contrib | |
| parent | 0d0ac3826a3bbb9247e39e12623bbcfdd722f24c (diff) | |
strbuf.cocci: suggest strbuf_addbuf() to add one strbuf to an other
The best way to add one strbuf to an other is via:
strbuf_addbuf(&sb, &sb2);
This is a bit more idiomatic and efficient than:
strbuf_addstr(&sb, sb2.buf);
because the size of the second strbuf is known and thus it can spare a
strlen() call, and much more so than:
strbuf_addf(&sb, "%s", sb2.buf);
because it can spare the whole vsnprintf() formatting magic.
Add new semantic patches to 'contrib/coccinelle/strbuf.cocci' to catch
these undesired patterns and to suggest strbuf_addbuf() instead.
Luckily, our codebase is already clean from any such undesired
patterns (but one of the in-flight topics just tried to sneak in such
a strbuf_addf() call).
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'contrib')
| -rw-r--r-- | contrib/coccinelle/strbuf.cocci | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/contrib/coccinelle/strbuf.cocci b/contrib/coccinelle/strbuf.cocci index e34eada1ad..d9ada69b43 100644 --- a/contrib/coccinelle/strbuf.cocci +++ b/contrib/coccinelle/strbuf.cocci @@ -13,6 +13,36 @@ constant fmt !~ "%"; ); @@ +expression E; +struct strbuf SB; +format F =~ "s"; +@@ +- strbuf_addf(E, "%@F@", SB.buf); ++ strbuf_addbuf(E, &SB); + +@@ +expression E; +struct strbuf *SBP; +format F =~ "s"; +@@ +- strbuf_addf(E, "%@F@", SBP->buf); ++ strbuf_addbuf(E, SBP); + +@@ +expression E; +struct strbuf SB; +@@ +- strbuf_addstr(E, SB.buf); ++ strbuf_addbuf(E, &SB); + +@@ +expression E; +struct strbuf *SBP; +@@ +- strbuf_addstr(E, SBP->buf); ++ strbuf_addbuf(E, SBP); + +@@ expression E1, E2; format F =~ "s"; @@ |