Re: [PATCH v8 7/8] ls-tree.c: introduce struct "shown_data"

>
> Teng Long <dyroneteng@gmail.com> writes:
>
> > "show_data" is a struct that packages the necessary fields for
>
> Is that shown_data?
>
> > reusing. This commit is a front-loaded commit for support
> > "--format" argument and does not affect any existing functionality.
>
> What's a front-loaded commit?  Is that some joke around a washing
> machine that I do not quite get, or something?
>
> > Signed-off-by: Teng Long <dyroneteng@gmail.com>
> > ---
> >  builtin/ls-tree.c | 47 +++++++++++++++++++++++++++++------------------
> >  1 file changed, 29 insertions(+), 18 deletions(-)
> >
> > diff --git a/builtin/ls-tree.c b/builtin/ls-tree.c
> > index 85ca7358ba..009ffeb15d 100644
> > --- a/builtin/ls-tree.c
> > +++ b/builtin/ls-tree.c
> > @@ -34,6 +34,14 @@ static unsigned int shown_bits;
> >  #define SHOW_MODE (1 << 4)
> >  #define SHOW_DEFAULT 29 /* 11101 size is not shown to output by default */
> >
> > +struct shown_data {
> > +     unsigned mode;
> > +     enum object_type type;
> > +     const struct object_id *oid;
> > +     const char *pathname;
> > +     struct strbuf *base;
> > +};
> > +
> >  static const  char * const ls_tree_usage[] = {
> >       N_("git ls-tree [<options>] <tree-ish> [<path>...]"),
> >       NULL
> > @@ -98,17 +106,15 @@ static int show_recursive(const char *base, size_t baselen,
> >       return 0;
> >  }
> >
> > -static int show_default(const struct object_id *oid, enum object_type type,
> > -                     const char *pathname, unsigned mode,
> > -                     struct strbuf *base)
> > +static int show_default(struct shown_data *data)
> >  {
> > -     size_t baselen = base->len;
> > +     size_t baselen = data->base->len;
> >
> >       if (shown_bits & SHOW_SIZE) {
> >               char size_text[24];
> > -             if (type == OBJ_BLOB) {
> > +             if (data->type == OBJ_BLOB) {
> >                       unsigned long size;
> > -                     if (oid_object_info(the_repository, oid, &size) == OBJ_BAD)
> > +                     if (oid_object_info(the_repository, data->oid, &size) == OBJ_BAD)
> >                               xsnprintf(size_text, sizeof(size_text), "BAD");
> >                       else
> >                               xsnprintf(size_text, sizeof(size_text),
> > @@ -116,18 +122,18 @@ static int show_default(const struct object_id *oid, enum object_type type,
> >               } else {
> >                       xsnprintf(size_text, sizeof(size_text), "-");
> >               }
> > -             printf("%06o %s %s %7s\t", mode, type_name(type),
> > -             find_unique_abbrev(oid, abbrev), size_text);
> > +             printf("%06o %s %s %7s\t", data->mode, type_name(data->type),
> > +             find_unique_abbrev(data->oid, abbrev), size_text);
> >       } else {
> > -             printf("%06o %s %s\t", mode, type_name(type),
> > -             find_unique_abbrev(oid, abbrev));
> > +             printf("%06o %s %s\t", data->mode, type_name(data->type),
> > +             find_unique_abbrev(data->oid, abbrev));
> >       }
> > -     baselen = base->len;
> > -     strbuf_addstr(base, pathname);
> > -     write_name_quoted_relative(base->buf,
> > +     baselen = data->base->len;
> > +     strbuf_addstr(data->base, data->pathname);
> > +     write_name_quoted_relative(data->base->buf,
> >                                  chomp_prefix ? ls_tree_prefix : NULL, stdout,
> >                                  line_termination);
> > -     strbuf_setlen(base, baselen);
> > +     strbuf_setlen(data->base, baselen);
> >       return 1;
> >  }
> >
> > @@ -154,11 +160,16 @@ static int show_tree(const struct object_id *oid, struct strbuf *base,
> >  {
> >       int retval = 0;
> >       size_t baselen;
> > -     enum object_type type = OBJ_BLOB;
> > +     struct shown_data data = {
> > +             .mode = mode,
> > +             .type = OBJ_BLOB,
> > +             .oid = oid,
> > +             .pathname = pathname,
> > +             .base = base,
> > +     };
> >
> > -     if (show_tree_init(&type, base, pathname, mode, &retval))
> > +     if (show_tree_init(&data.type, base, pathname, mode, &retval))
> >               return retval;
> > -
> >       if (!(shown_bits ^ SHOW_OBJECT_NAME)) {
> >               printf("%s%c", find_unique_abbrev(oid, abbrev), line_termination);
> >               return retval;
> > @@ -175,7 +186,7 @@ static int show_tree(const struct object_id *oid, struct strbuf *base,
> >
> >       if (!(shown_bits ^ SHOW_DEFAULT) ||
> >           !(shown_bits ^ (SHOW_DEFAULT | SHOW_SIZE)))
> > -             show_default(oid, type, pathname, mode, base);
> > +             show_default(&data);
> >
> >       return retval;
> >  }