git-commit-vandalism/contrib/coccinelle/strbuf.cocci
René Scharfe 353d84c537 coccicheck: make transformation for strbuf_addf(sb, "...") more precise
We can replace strbuf_addf() calls that just add a simple string with
calls to strbuf_addstr() to make the intent clearer.  We need to be
careful if that string contains printf format specifications like %%,
though, as a simple replacement would change the output.

Add checks to the semantic patch to make sure we only perform the
transformation if the second argument is a string constant (possibly
translated) that doesn't contain any percent signs.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-03 12:20:20 -07:00

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@ strbuf_addf_with_format_only @
expression E;
constant fmt;
@@
strbuf_addf(E,
(
fmt
|
_(fmt)
)
);
@ script:python @
fmt << strbuf_addf_with_format_only.fmt;
@@
cocci.include_match("%" not in fmt)
@ extends strbuf_addf_with_format_only @
@@
- strbuf_addf
+ strbuf_addstr
(E,
(
fmt
|
_(fmt)
)
);
@@
expression E1, E2;
@@
- strbuf_addf(E1, "%s", E2);
+ strbuf_addstr(E1, E2);
@@
expression E1, E2, E3;
@@
- strbuf_addstr(E1, find_unique_abbrev(E2, E3));
+ strbuf_add_unique_abbrev(E1, E2, E3);