[PATCHv7 4/9] receive-pack.c: simplify execute_commands

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No functional changes intended.

This commit shortens execute_commands by moving some parts of the code
to extra functions.

Suggested-by: Eric Sunshine <sunshine@xxxxxxxxxxxxxx>
Signed-off-by: Stefan Beller <sbeller@xxxxxxxxxx>
---

Notes:
    v7:
     new in v7 as in v7 I'd split up the previous
     [PATCH 4/7] receive-pack.c: receive-pack.c: use a single ref_transaction for atomic pushes
     as suggested by Eric.
    
     This is pretty much
    > patch 1: Factor out code into helper functions which will be needed by
    > the upcoming atomic and non-atomic worker functions. Example helpers:
    > 'cmd->error_string' and cmd->skip_update' check; and the
    > 'si->shallow_ref[cmd->index]' check and handling.

 builtin/receive-pack.c | 49 ++++++++++++++++++++++++++++++++-----------------
 1 file changed, 32 insertions(+), 17 deletions(-)

diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 4e8eaf7..06eb287 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -1043,11 +1043,40 @@ static void reject_updates_to_hidden(struct command *commands)
 	}
 }
 
+static int should_process_cmd(struct command *cmd)
+{
+	if (cmd->error_string)
+		return 0;
+	if (cmd->skip_update)
+		return 0;
+	return 1;
+}
+
+static void check_shallow_bugs(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))
+			continue;
+
+		if (shallow_update && 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");
+}
+
 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;
@@ -1078,27 +1107,13 @@ 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");
+	check_shallow_bugs(commands, si);
 }
 
 static struct command **queue_command(struct command **tail,
-- 
2.2.1.62.g3f15098

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