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parse_pathspec: add PATHSPEC_PREFER_{CWD,FULL} flags 

We have two ways of dealing with empty pathspec:

1. limit it to current prefix
2. match the entire working directory

Some commands go with #1, some #2. get_pathspec() and parse_pathspec()
only support #1. Make parse_pathspec() reject empty pathspec by
default. #1 and #2 can be specified via new flags. This makes it more
expressive about default behavior at command level.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy 2013-07-14 15:35:30 +07:00 committed by Junio C Hamano
parent d2ce133195
commit fc12261fea
2 changed files with 16 additions and 1 deletions
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13
pathspec.c
View File

@ -271,10 +271,20 @@ void parse_pathspec(struct pathspec *pathspec,
if (!entry && !prefix)
return;
if ((flags & PATHSPEC_PREFER_CWD) &&
(flags & PATHSPEC_PREFER_FULL))
die("BUG: PATHSPEC_PREFER_CWD and PATHSPEC_PREFER_FULL are incompatible");
/* No arguments with prefix -> prefix pathspec */
if (!entry) {
static const char *raw[2];
if (flags & PATHSPEC_PREFER_FULL)
return;
if (!(flags & PATHSPEC_PREFER_CWD))
die("BUG: PATHSPEC_PREFER_CWD requires arguments");
pathspec->items = item = xmalloc(sizeof(*item));
memset(item, 0, sizeof(*item));
item->match = prefix;
@ -340,7 +350,8 @@ const char **get_pathspec(const char *prefix, const char **pathspec)
struct pathspec ps;
parse_pathspec(&ps,
PATHSPEC_ALL_MAGIC & ~PATHSPEC_FROMTOP,
0, prefix, pathspec);
PATHSPEC_PREFER_CWD,
prefix, pathspec);
return ps.raw;
}

4
pathspec.h
View File

@ -24,6 +24,10 @@ struct pathspec {
} *items;
};
/* parse_pathspec flags */
#define PATHSPEC_PREFER_CWD (1<<0) /* No args means match cwd */
#define PATHSPEC_PREFER_FULL (1<<1) /* No args means match everything */
extern int init_pathspec(struct pathspec *, const char **);
extern void parse_pathspec(struct pathspec *pathspec,
unsigned magic_mask,