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-rw-r--r--src/options.c266
1 files changed, 0 insertions, 266 deletions
diff --git a/src/options.c b/src/options.c
deleted file mode 100644
index e2fcfdb..0000000
--- a/src/options.c
+++ /dev/null
@@ -1,266 +0,0 @@
-/* Copyright 2019 Ján Sučan <jan@jansucan.com>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "options.h"
-
-#include "print.h"
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-/* This header file is automatically generated at build time from the Makefile
- */
-#include "program_info.h"
-
-#define OPTIONS_MAX_OPERATION_NAME_LENGTH 8
-#define OPTIONS_DEFAULT_SECTOR_SIZE 512
-#define OPTIONS_DEFAULT_BUFFER_SIZE (4 * 1024 * 1024)
-
-struct common_options {
- bool help;
- uint32_t sector_size;
- uint32_t buffer_size;
-};
-
-static int options_parse_unsigned(const char *const arg, uint32_t *const value);
-static void options_parse_operation(const char *const argv,
- options_t *const opts);
-static bool options_parse_common(int *const argc, char ***const argv,
- struct common_options *const opts);
-static bool options_parse_backup(int *const argc, char ***const argv,
- options_t *const opts);
-static bool options_parse_restore(int *const argc, char ***const argv,
- options_t *const opts);
-
-bool
-options_parse(int argc, char **argv, options_t *const opts)
-{
- // Skip the executable name
- --argc;
- ++argv;
-
- options_parse_operation(argv[0], opts);
-
- if (options_is_operation(opts, OPERATION_ID_UNKNOWN)) {
- return false;
- }
-
- if (options_is_operation(opts, OPERATION_ID_BACKUP)) {
- if (!options_parse_backup(&argc, &argv, opts)) {
- return false;
- }
- } else if (options_is_operation(opts, OPERATION_ID_RESTORE)) {
- if (!options_parse_restore(&argc, &argv, opts)) {
- return false;
- }
- }
- return true;
-}
-
-void
-options_usage(int exit_code)
-{
- printf("Usage: %s [-s SECTOR_SIZE] [-b BUFFER_SIZE] [INFILE] REFFILE "
- "OUTFILE\n",
- PROGRAM_NAME_STR);
- exit(exit_code);
-}
-
-bool
-options_is_operation(const options_t *const opts, operation_id_t operation_id)
-{
- return (opts->operation_id == operation_id);
-}
-
-const options_backup_t *
-options_get_for_backup(const options_t *const opts)
-{
- return &(opts->op.backup);
-}
-
-const options_restore_t *
-options_get_for_restore(const options_t *const opts)
-{
- return &(opts->op.restore);
-}
-
-static int
-options_parse_unsigned(const char *const arg, uint32_t *const value)
-{
- char *end;
-
- errno = 0;
-
- *value = strtoul(arg, &end, 0);
-
- return ((*end != '\0') || (errno != 0)) ? -1 : 0;
-}
-
-static void
-options_parse_operation(const char *const op_name, options_t *const opts)
-{
- if (op_name == NULL) {
- opts->operation_id = OPERATION_ID_UNKNOWN;
- } else if (strncmp(op_name, "help", OPTIONS_MAX_OPERATION_NAME_LENGTH) ==
- 0) {
- opts->operation_id = OPERATION_ID_HELP;
- } else if (strncmp(op_name, "backup", OPTIONS_MAX_OPERATION_NAME_LENGTH) ==
- 0) {
- opts->operation_id = OPERATION_ID_BACKUP;
- } else if (strncmp(op_name, "restore", OPTIONS_MAX_OPERATION_NAME_LENGTH) ==
- 0) {
- opts->operation_id = OPERATION_ID_RESTORE;
- } else {
- opts->operation_id = OPERATION_ID_UNKNOWN;
- }
-}
-
-static void
-options_init_common(struct common_options *const opts)
-{
- opts->help = false;
- opts->sector_size = OPTIONS_DEFAULT_SECTOR_SIZE;
- opts->buffer_size = OPTIONS_DEFAULT_BUFFER_SIZE;
-}
-
-static bool
-options_parse_common(int *const argc, char ***const argv,
- struct common_options *const opts)
-{
- int ch;
- char *arg_sector_size = NULL;
- char *arg_buffer_size = NULL;
-
- while ((ch = getopt(*argc, *argv, ":b:hs:")) != -1) {
- switch (ch) {
- case 'b':
- arg_buffer_size = optarg;
- break;
-
- case 'h':
- opts->help = true;
- break;
-
- case 's':
- arg_sector_size = optarg;
- break;
-
- case ':':
- print_error("missing argument for option '-%c'", optopt);
- return false;
- default:
- print_error("unknown option '-%c'", optopt);
- return false;
- }
- }
-
- *argc -= optind;
- *argv += optind;
-
- /* Convert numbers in the arguments */
- if ((arg_sector_size != NULL) &&
- options_parse_unsigned(arg_sector_size, &(opts->sector_size))) {
- print_error("incorrect sector size");
- return false;
- } else if ((arg_buffer_size != NULL) &&
- options_parse_unsigned(arg_buffer_size, &(opts->buffer_size))) {
- print_error("incorrect buffer size");
- return false;
- } else if (opts->sector_size == 0) {
- print_error("sector size cannot be 0");
- return false;
- } else if (opts->buffer_size == 0) {
- print_error("buffer size cannot be 0");
- return false;
- } else if (opts->sector_size > opts->buffer_size) {
- print_error("sector size cannot larger than buffer size");
- return false;
- } else if ((opts->buffer_size % opts->sector_size) != 0) {
- print_error("buffer size is not multiple of sector size");
- return false;
- }
-
- return true;
-}
-
-static bool
-options_parse_backup(int *const argc, char ***const argv, options_t *const opts)
-{
- struct common_options common_opts;
- options_init_common(&common_opts);
- if (!options_parse_common(argc, argv, &common_opts)) {
- return false;
- }
-
- if (common_opts.help) {
- opts->operation_id = OPERATION_ID_HELP;
- } else if (*argc < 3) {
- print_error("missing arguments");
- return false;
- } else if (*argc > 3) {
- print_error("too many arguments");
- return false;
- } else {
- opts->op.backup.sector_size = common_opts.sector_size;
- opts->op.backup.buffer_size = common_opts.buffer_size;
- opts->op.backup.in_file_path = (*argv)[0];
- opts->op.backup.ref_file_path = (*argv)[1];
- opts->op.backup.out_file_path = (*argv)[2];
- }
-
- return true;
-}
-
-static bool
-options_parse_restore(int *const argc, char ***const argv,
- options_t *const opts)
-{
- struct common_options common_opts;
- options_init_common(&common_opts);
- if (!options_parse_common(argc, argv, &common_opts)) {
- return false;
- }
-
- if (common_opts.help) {
- opts->operation_id = OPERATION_ID_HELP;
- } else if (*argc < 2) {
- print_error("missing arguments");
- return false;
- } else if (*argc > 2) {
- print_error("too many arguments");
- return false;
- } else {
- opts->op.restore.sector_size = common_opts.sector_size;
- opts->op.restore.buffer_size = common_opts.buffer_size;
- opts->op.restore.in_file_path = (*argv)[0];
- opts->op.restore.out_file_path = (*argv)[1];
- }
-
- return true;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-01 04:27:53 +0000