W dniu 08.11.2016 o 21:11, Karthik Nayak pisze:
> From: Karthik Nayak <karthik.188@xxxxxxxxx>
>
> Implement %(if:equals=<string>) wherein the if condition is only
> satisfied if the value obtained between the %(if:...) and %(then) atom
> is the same as the given '<string>'.
>
> Similarly, implement (if:notequals=<string>) wherein the if condition
> is only satisfied if the value obtained between the %(if:...) and
> %(then) atom is differnt from the given '<string>'.
^^^^^^^^
s/differnt/different/ <-- typo
>
> This is done by introducing 'if_atom_parser()' which parses the given
> %(if) atom and then stores the data in used_atom which is later passed
> on to the used_atom of the %(then) atom, so that it can do the required
> comparisons.
Nb. the syntax reminds me a bit of RPM SPEC language.
>
> Add tests and Documentation for the same.
>
> Mentored-by: Christian Couder <christian.couder@xxxxxxxxx>
> Mentored-by: Matthieu Moy <matthieu.moy@xxxxxxxxxxxxxxx>
> Signed-off-by: Karthik Nayak <karthik.188@xxxxxxxxx>
> ---
> Documentation/git-for-each-ref.txt | 3 +++
> ref-filter.c | 43 +++++++++++++++++++++++++++++++++-----
> t/t6302-for-each-ref-filter.sh | 18 ++++++++++++++++
> 3 files changed, 59 insertions(+), 5 deletions(-)
>
> diff --git a/Documentation/git-for-each-ref.txt b/Documentation/git-for-each-ref.txt
> index fed8126..b7b8560 100644
> --- a/Documentation/git-for-each-ref.txt
> +++ b/Documentation/git-for-each-ref.txt
> @@ -155,6 +155,9 @@ if::
> evaluating the string before %(then), this is useful when we
> use the %(HEAD) atom which prints either "*" or " " and we
> want to apply the 'if' condition only on the 'HEAD' ref.
So %(if) is actually %(if:notempty) ? Just kidding.
> + Append ":equals=<string>" or ":notequals=<string>" to compare
> + the value between the %(if:...) and %(then) atoms with the
> + given string.
>
> In addition to the above, for commit and tag objects, the header
> field names (`tree`, `parent`, `object`, `type`, and `tag`) can
> diff --git a/ref-filter.c b/ref-filter.c
> index 8392303..44481c3 100644
> --- a/ref-filter.c
> +++ b/ref-filter.c
> @@ -22,6 +22,8 @@ struct align {
> };
>
> struct if_then_else {
> + const char *if_equals,
> + *not_equals;
I guess using anonymous structs from C11 here...
> unsigned int then_atom_seen : 1,
> else_atom_seen : 1,
> condition_satisfied : 1;
> @@ -49,6 +51,10 @@ static struct used_atom {
> enum { C_BARE, C_BODY, C_BODY_DEP, C_LINES, C_SIG, C_SUB } option;
> unsigned int nlines;
> } contents;
> + struct {
> + const char *if_equals,
> + *not_equals;
> + } if_then_else;
...to avoid code duplication there is rather out of question?
> enum { O_FULL, O_SHORT } objectname;
> } u;
> } *used_atom;
> @@ -169,6 +175,19 @@ static void align_atom_parser(struct used_atom *atom, const char *arg)
> string_list_clear(¶ms, 0);
> }
>
> +static void if_atom_parser(struct used_atom *atom, const char *arg)
> +{
> + if (!arg)
> + return;
> + else if (skip_prefix(arg, "equals=", &atom->u.if_then_else.if_equals))
> + ;
> + else if (skip_prefix(arg, "notequals=", &atom->u.if_then_else.not_equals))
> + ;
Those ';' should be perfectly aligned, isn't it?
[...]
> +test_expect_success 'check %(if:equals=<string>)' '
> + git for-each-ref --format="%(if:equals=master)%(refname:short)%(then)Found master%(else)Not master%(end)" refs/heads/ >actual &&
> + cat >expect <<-\EOF &&
> + Found master
> + Not master
> + EOF
> + test_cmp expect actual
> +'
> +
> +test_expect_success 'check %(if:notequals=<string>)' '
> + git for-each-ref --format="%(if:notequals=master)%(refname:short)%(then)Not master%(else)Found master%(end)" refs/heads/ >actual &&
> + cat >expect <<-\EOF &&
> + Found master
> + Not master
> + EOF
> + test_cmp expect actual
> +'
Nice!
--
Jakub Narębski