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dir.c: use a single struct exclude_list per source of excludes

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Previously each exclude_list could potentially contain patterns
from multiple sources.  For example dir->exclude_list[EXC_FILE]
would typically contain patterns from .git/info/exclude and
core.excludesfile, and dir->exclude_list[EXC_DIRS] could contain
patterns from multiple per-directory .gitignore files during
directory traversal (i.e. when dir->exclude_stack was more than
one item deep).

We split these composite exclude_lists up into three groups of
exclude_lists (EXC_CMDL / EXC_DIRS / EXC_FILE as before), so that each
exclude_list now contains patterns from a single source.  This will
allow us to cleanly track the origin of each pattern simply by adding
a src field to struct exclude_list, rather than to struct exclude,
which would make memory management of the source string tricky in the
EXC_DIRS case where its contents are dynamically generated.

Similarly, by moving the filebuf member from struct exclude_stack to
struct exclude_list, it allows us to track and subsequently free
memory buffers allocated during the parsing of all exclude files,
rather than only tracking buffers allocated for files in the EXC_DIRS
group.

Signed-off-by: Adam Spiers <git@adamspiers.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Adam Spiers
2013-01-06 16:58:03 +00:00
committed by Junio C Hamano
parent f619881251
commit c082df2453
6 changed files with 86 additions and 39 deletions
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8
builtin/ls-files.c
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@ -420,10 +420,10 @@ static int option_parse_z(const struct option *opt,
static int option_parse_exclude(const struct option *opt,
const char *arg, int unset)
{
struct exclude_list *list = opt->value;
struct exclude_list_group *group = opt->value;
exc_given = 1;
add_exclude(arg, "", 0, list);
add_exclude(arg, "", 0, &group->el[0]);
return 0;
}
@ -488,7 +488,8 @@ int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix)
"show unmerged files in the output"),
OPT_BOOLEAN(0, "resolve-undo", &show_resolve_undo,
"show resolve-undo information"),
{ OPTION_CALLBACK, 'x', "exclude", &dir.exclude_list[EXC_CMDL], "pattern",
{ OPTION_CALLBACK, 'x', "exclude",
&dir.exclude_list_group[EXC_CMDL], "pattern",
"skip files matching pattern",
0, option_parse_exclude },
{ OPTION_CALLBACK, 'X', "exclude-from", &dir, "file",
@ -523,6 +524,7 @@ int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix)
if (read_cache() < 0)
die("index file corrupt");
add_exclude_list(&dir, EXC_CMDL);
argc = parse_options(argc, argv, prefix, builtin_ls_files_options,
ls_files_usage, 0);
if (show_tag || show_valid_bit) {