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receive-pack.c: shorten the execute_commands loop over all commands 

Make the main "execute_commands" loop in receive-pack easier to read
by splitting out some steps into helper functions. The new helper
'should_process_cmd' checks if a ref update is unnecessary, whether
due to an error having occurred or for another reason. The helper
'warn_if_skipped_connectivity_check' warns if we have forgotten to
run a connectivity check on a ref which is shallow for the client
which would be a bug.

This will help us to duplicate less code in a later patch when we make
a second copy of the "execute_commands" loop.

No functional change intended.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Stefan Beller 2015-01-07 19:23:15 -08:00 committed by Junio C Hamano
parent c653e0343d
commit a6a8431968
1 changed files with 27 additions and 16 deletions
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43
builtin/receive-pack.c
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@ -1042,11 +1042,34 @@ static void reject_updates_to_hidden(struct command *commands)
}
}
static int should_process_cmd(struct command *cmd)
{
return !cmd->error_string && !cmd->skip_update;
}
static void warn_if_skipped_connectivity_check(struct command *commands,
struct shallow_info *si)
{
struct command *cmd;
int checked_connectivity = 1;
for (cmd = commands; cmd; cmd = cmd->next) {
if (should_process_cmd(cmd) && si->shallow_ref[cmd->index]) {
error("BUG: connectivity check has not been run on ref %s",
cmd->ref_name);
checked_connectivity = 0;
}
}
if (!checked_connectivity)
error("BUG: run 'git fsck' for safety.\n"
"If there are errors, try to remove "
"the reported refs above");
}
static void execute_commands(struct command *commands,
const char *unpacker_error,
struct shallow_info *si)
{
int checked_connectivity;
struct command *cmd;
unsigned char sha1[20];
struct iterate_data data;
@ -1077,27 +1100,15 @@ static void execute_commands(struct command *commands,
free(head_name_to_free);
head_name = head_name_to_free = resolve_refdup("HEAD", 0, sha1, NULL);
checked_connectivity = 1;
for (cmd = commands; cmd; cmd = cmd->next) {
if (cmd->error_string)
continue;
if (cmd->skip_update)
if (!should_process_cmd(cmd))
continue;
cmd->error_string = update(cmd, si);
if (shallow_update && !cmd->error_string &&
si->shallow_ref[cmd->index]) {
error("BUG: connectivity check has not been run on ref %s",
cmd->ref_name);
checked_connectivity = 0;
}
}
if (shallow_update && !checked_connectivity)
error("BUG: run 'git fsck' for safety.\n"
"If there are errors, try to remove "
"the reported refs above");
if (shallow_update)
warn_if_skipped_connectivity_check(commands, si);
}
static struct command **queue_command(struct command **tail,