Files
git/reftable/dump.c
Patrick Steinhardt 799237852b reftable: pass opts as constant pointer
We sometimes pass the refatble write options as value and sometimes as a
pointer. This is quite confusing and makes the reader wonder whether the
options get modified sometimes.

In fact, `reftable_new_writer()` does cause the caller-provided options
to get updated when some values aren't set up. This is quite unexpected,
but didn't cause any harm until now.

Adapt the code so that we do not modify the caller-provided values
anymore. While at it, refactor the code to code to consistently pass the
options as a constant pointer to clarify that the caller-provided opts
will not ever get modified.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-05-13 17:02:38 -07:00

106 lines
2.2 KiB
C

/*
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 "git-compat-util.h"
#include "hash-ll.h"
#include "reftable-blocksource.h"
#include "reftable-error.h"
#include "reftable-record.h"
#include "reftable-tests.h"
#include "reftable-writer.h"
#include "reftable-iterator.h"
#include "reftable-reader.h"
#include "reftable-stack.h"
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
static int compact_stack(const char *stackdir)
{
struct reftable_stack *stack = NULL;
struct reftable_write_options opts = { 0 };
int err = reftable_new_stack(&stack, stackdir, &opts);
if (err < 0)
goto done;
err = reftable_stack_compact_all(stack, NULL);
if (err < 0)
goto done;
done:
if (stack) {
reftable_stack_destroy(stack);
}
return err;
}
static void print_help(void)
{
printf("usage: dump [-cst] arg\n\n"
"options: \n"
" -c compact\n"
" -t dump table\n"
" -s dump stack\n"
" -6 sha256 hash format\n"
" -h this help\n"
"\n");
}
int reftable_dump_main(int argc, char *const *argv)
{
int err = 0;
int opt_dump_table = 0;
int opt_dump_stack = 0;
int opt_compact = 0;
uint32_t opt_hash_id = GIT_SHA1_FORMAT_ID;
const char *arg = NULL, *argv0 = argv[0];
for (; argc > 1; argv++, argc--)
if (*argv[1] != '-')
break;
else if (!strcmp("-t", argv[1]))
opt_dump_table = 1;
else if (!strcmp("-6", argv[1]))
opt_hash_id = GIT_SHA256_FORMAT_ID;
else if (!strcmp("-s", argv[1]))
opt_dump_stack = 1;
else if (!strcmp("-c", argv[1]))
opt_compact = 1;
else if (!strcmp("-?", argv[1]) || !strcmp("-h", argv[1])) {
print_help();
return 2;
}
if (argc != 2) {
fprintf(stderr, "need argument\n");
print_help();
return 2;
}
arg = argv[1];
if (opt_dump_table) {
err = reftable_reader_print_file(arg);
} else if (opt_dump_stack) {
err = reftable_stack_print_directory(arg, opt_hash_id);
} else if (opt_compact) {
err = compact_stack(arg);
}
if (err < 0) {
fprintf(stderr, "%s: %s: %s\n", argv0, arg,
reftable_error_str(err));
return 1;
}
return 0;
}