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grep: add submodules as a grep source type

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Add `GREP_SOURCE_SUBMODULE` as a grep_source type and cases for this new
type in the various switch statements in grep.c.

When initializing a grep_source with type `GREP_SOURCE_SUBMODULE` the
identifier can either be NULL (to indicate that the working tree will be
used) or a SHA1 (the REV of the submodule to be grep'd).  If the
identifier is a SHA1 then we want to fall through to the
`GREP_SOURCE_SHA1` case to handle the copying of the SHA1.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Brandon Williams 2016-12-16 11:03:19 -08:00 committed by Junio C Hamano
parent 9ebf689aad
commit 4538eef564
2 changed files with 16 additions and 1 deletions
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16
grep.c
View File

@ -1735,12 +1735,23 @@ void grep_source_init(struct grep_source *gs, enum grep_source_type type,
case GREP_SOURCE_FILE:
gs->identifier = xstrdup(identifier);
break;
case GREP_SOURCE_SUBMODULE:
if (!identifier) {
gs->identifier = NULL;
break;
}
/*
* FALL THROUGH
* If the identifier is non-NULL (in the submodule case) it
* will be a SHA1 that needs to be copied.
*/
case GREP_SOURCE_SHA1:
gs->identifier = xmalloc(20);
hashcpy(gs->identifier, identifier);
break;
case GREP_SOURCE_BUF:
gs->identifier = NULL;
break;
}
}
@ -1760,6 +1771,7 @@ void grep_source_clear_data(struct grep_source *gs)
switch (gs->type) {
case GREP_SOURCE_FILE:
case GREP_SOURCE_SHA1:
case GREP_SOURCE_SUBMODULE:
free(gs->buf);
gs->buf = NULL;
gs->size = 0;
@ -1831,8 +1843,10 @@ static int grep_source_load(struct grep_source *gs)
return grep_source_load_sha1(gs);
case GREP_SOURCE_BUF:
return gs->buf ? 0 : -1;
case GREP_SOURCE_SUBMODULE:
break;
}
die("BUG: invalid grep_source type");
die("BUG: invalid grep_source type to load");
}
void grep_source_load_driver(struct grep_source *gs)

1
grep.h
View File

@ -161,6 +161,7 @@ struct grep_source {
GREP_SOURCE_SHA1,
GREP_SOURCE_FILE,
GREP_SOURCE_BUF,
GREP_SOURCE_SUBMODULE,
} type;
void *identifier;