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builtin-am: implement committing applied patch

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Implement do_commit(), which commits the index which contains the
results of applying the patch, along with the extracted commit message
and authorship information.

Since 29b6754 (am: remove rebase-apply directory before gc, 2010-02-22),
git gc --auto is also invoked to pack the loose objects that are created
from making the commits.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Paul Tan 2015-08-04 21:51:30 +08:00 committed by Junio C Hamano
parent 38a824fe05
commit c9e8d960b6
1 changed files with 51 additions and 4 deletions
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55
builtin/am.c
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@ -11,6 +11,9 @@
#include "run-command.h"
#include "quote.h"
#include "lockfile.h"
#include "cache-tree.h"
#include "refs.h"
#include "commit.h"
/**
* Returns 1 if the file is empty or does not exist, 0 otherwise.
@ -673,11 +676,57 @@ static int run_apply(const struct am_state *state)
return 0;
}
/**
* Commits the current index with state->msg as the commit message and
* state->author_name, state->author_email and state->author_date as the author
* information.
*/
static void do_commit(const struct am_state *state)
{
unsigned char tree[GIT_SHA1_RAWSZ], parent[GIT_SHA1_RAWSZ],
commit[GIT_SHA1_RAWSZ];
unsigned char *ptr;
struct commit_list *parents = NULL;
const char *reflog_msg, *author;
struct strbuf sb = STRBUF_INIT;
if (write_cache_as_tree(tree, 0, NULL))
die(_("git write-tree failed to write a tree"));
if (!get_sha1_commit("HEAD", parent)) {
ptr = parent;
commit_list_insert(lookup_commit(parent), &parents);
} else {
ptr = NULL;
fprintf_ln(stderr, _("applying to an empty history"));
}
author = fmt_ident(state->author_name, state->author_email,
state->author_date, IDENT_STRICT);
if (commit_tree(state->msg, state->msg_len, tree, parents, commit,
author, NULL))
die(_("failed to write commit object"));
reflog_msg = getenv("GIT_REFLOG_ACTION");
if (!reflog_msg)
reflog_msg = "am";
strbuf_addf(&sb, "%s: %.*s", reflog_msg, linelen(state->msg),
state->msg);
update_ref(sb.buf, "HEAD", commit, ptr, 0, UPDATE_REFS_DIE_ON_ERR);
strbuf_release(&sb);
}
/**
* Applies all queued mail.
*/
static void am_run(struct am_state *state)
{
const char *argv_gc_auto[] = {"gc", "--auto", NULL};
refresh_and_write_cache();
while (state->cur <= state->last) {
@ -709,16 +758,14 @@ static void am_run(struct am_state *state)
exit(128);
}
/*
* NEEDSWORK: After the patch has been applied to the index
* with git-apply, we need to make commit as well.
*/
do_commit(state);
next:
am_next(state);
}
am_destroy(state);
run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);
}
/**