From 890044708dcc6144aac928f3592cb8fa64ac0580 Mon Sep 17 00:00:00 2001 From: Han-Wen Nienhuys Date: Thu, 7 Oct 2021 20:24:59 +0000 Subject: reftable: add error related functionality The reftable/ directory is structured as a library, so it cannot crash on misuse. Instead, it returns an error code. In addition to signaling errors, the error code can be used to signal conditions from lower levels of the library to be handled by higher levels of the library. For example, in a transaction we might legitimately write an empty reftable file, but in that case, we want to shortcut the transaction. Signed-off-by: Han-Wen Nienhuys Signed-off-by: Junio C Hamano --- reftable/error.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 reftable/error.c (limited to 'reftable/error.c') diff --git a/reftable/error.c b/reftable/error.c new file mode 100644 index 0000000000..f6f16def92 --- /dev/null +++ b/reftable/error.c @@ -0,0 +1,41 @@ +/* +Copyright 2020 Google LLC + +Use of this source code is governed by a BSD-style +license that can be found in the LICENSE file or at +https://developers.google.com/open-source/licenses/bsd +*/ + +#include "reftable-error.h" + +#include + +const char *reftable_error_str(int err) +{ + static char buf[250]; + switch (err) { + case REFTABLE_IO_ERROR: + return "I/O error"; + case REFTABLE_FORMAT_ERROR: + return "corrupt reftable file"; + case REFTABLE_NOT_EXIST_ERROR: + return "file does not exist"; + case REFTABLE_LOCK_ERROR: + return "data is outdated"; + case REFTABLE_API_ERROR: + return "misuse of the reftable API"; + case REFTABLE_ZLIB_ERROR: + return "zlib failure"; + case REFTABLE_NAME_CONFLICT: + return "file/directory conflict"; + case REFTABLE_EMPTY_TABLE_ERROR: + return "wrote empty table"; + case REFTABLE_REFNAME_ERROR: + return "invalid refname"; + case -1: + return "general error"; + default: + snprintf(buf, sizeof(buf), "unknown error code %d", err); + return buf; + } +} -- cgit v1.2.3