[PATCH v4 8/8] attr: Expand macros immediately when encountered.
- From
Henrik Grubbström (Grubba) <grubba@grubba.org>
- Date
- Apr 6, 2010, 12:46 UTC
- Message-ID
- <81e89ac808ac41d2e6914635974fa45564f73279.1270554878.git.grubba@grubba.org>
- In-Reply-To
- <cover.1270554878.git.grubba@grubba.org>
When using macros it is otherwise hard to know whether an attribute set by the macro should override an already set attribute. Consider the following .gitattributes file:
[attr]mybinary binary -ident * ident foo.bin mybinary bar.bin mybinary ident
Without this patch both foo.bin and bar.bin will have the ident attribute set, which is probably not what the user expects. With this patch foo.bin will have an unset ident attribute, while bar.bin will have it set.
Signed-off-by: Henrik Grubbström <grubba@grubba.org> --- FYI: The use case I attempted was:
*.c crlf ident [attr]foreign_ident -ident block_commit=Remove-foreign_ident-attribute. src/version.c foreign_ident
Which currently causes src/version.c to have the ident attribute set.
attr.c | 32 ++++++++++++++++++++------------ t/t0003-attributes.sh | 9 +++++++++ 2 files changed, 29 insertions(+), 12 deletions(-)
diff --git a/attr.c b/attr.c index 968fb8b..f90bb8e 100644 --- a/attr.c +++ b/attr.c @@ -594,6 +594,8 @@ static int path_matches(const char *pathname, int pathlen, return fnmatch(pattern, pathname + baselen, FNM_PATHNAME) == 0; } +static int macroexpand_one(int attr_nr, int rem); + static int fill_one(const char *what, struct match_attr *a, int rem) { struct git_attr_check *check = check_all_attr; @@ -610,6 +612,7 @@ static int fill_one(const char *what, struct match_attr *a, int rem) attr, v); *n = v; rem--; + rem = macroexpand_one(attr->attr_nr, rem); } } return rem; @@ -631,19 +634,27 @@ static int fill(const char *path, int pathlen, struct attr_stack *stk, int rem) return rem; } -static int macroexpand(struct attr_stack *stk, int rem) +static int macroexpand_one(int attr_nr, int rem) { + struct attr_stack *stk; + struct match_attr *a = NULL; int i; - struct git_attr_check *check = check_all_attr; - for (i = stk->num_matches - 1; 0 < rem && 0 <= i; i--) { - struct match_attr *a = stk->attrs[i]; - if (!a->is_macro) - continue; - if (check[a->u.attr->attr_nr].value != ATTR__TRUE) - continue; + if (check_all_attr[attr_nr].value != ATTR__TRUE) + return rem; + + for (stk = attr_stack; !a && stk; stk = stk->prev) + for (i = stk->num_matches - 1; !a && 0 <= i; i--) { + struct match_attr *ma = stk->attrs[i]; + if (!ma->is_macro) + continue; + if (ma->u.attr->attr_nr == attr_nr) + a = ma; + } + + if (a) rem = fill_one("expand", a, rem); - } + return rem; } @@ -668,9 +679,6 @@ int git_checkattr(const char *path, int num, struct git_attr_check *check) for (stk = attr_stack; 0 < rem && stk; stk = stk->prev) rem = fill(path, pathlen, stk, rem); - for (stk = attr_stack; 0 < rem && stk; stk = stk->prev) - rem = macroexpand(stk, rem); - for (i = 0; i < num; i++) { const char *value = check_all_attr[check[i].attr->attr_nr].value; if (value == ATTR__UNKNOWN) diff --git a/t/t0003-attributes.sh b/t/t0003-attributes.sh index bd9c8de..53bd7fc 100755 --- a/t/t0003-attributes.sh +++ b/t/t0003-attributes.sh @@ -20,10 +20,12 @@ test_expect_success 'setup' ' mkdir -p a/b/d a/c && ( + echo "[attr]notest !test" echo "f test=f" echo "a/i test=a/i" echo "onoff test -test" echo "offon -test test" + echo "no notest" ) >.gitattributes && ( echo "g test=a/g" && @@ -32,6 +34,7 @@ test_expect_success 'setup' ' ( echo "h test=a/b/h" && echo "d/* test=a/b/d/*" + echo "d/yes notest" ) >a/b/.gitattributes ' @@ -48,6 +51,9 @@ test_expect_success 'attribute test' ' attr_check a/b/d/g "a/b/d/*" attr_check onoff unset attr_check offon set + attr_check no unspecified + attr_check a/b/d/no "a/b/d/*" + attr_check a/b/d/yes unspecified ' @@ -64,6 +70,9 @@ a/b/h: test: a/b/h a/b/d/g: test: a/b/d/* onoff: test: unset offon: test: set +no: test: unspecified +a/b/d/no: test: a/b/d/* +a/b/d/yes: test: unspecified EOF sed -e "s/:.*//" < expect | git check-attr --stdin test > actual &&
-- 1.7.0.3.316.g33b5e