Rewrite the option code in object-oriented way

1 files changed, 0 insertions, 213 deletions

diff --git a/src/resources.cpp b/src/resources.cpp
deleted file mode 100644
index 0829c7c..0000000
--- a/src/resources.cpp
+++ /dev/null
@@ -1,213 +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 "resources.h"
-
-#include "print.h"
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-static void
-resources_init_for_backup(resources_backup_t *const res)
-{
-    res->in_file = NULL;
-    res->ref_file = NULL;
-    res->out_file = NULL;
-
-    res->in_buffer = NULL;
-    res->ref_buffer = NULL;
-    res->out_buffer = NULL;
-}
-
-static int
-resources_allocate_for_backup(const options_backup_t *const opts,
-                              resources_backup_t *const res)
-{
-    if ((res->in_file = fopen(opts->in_file_path, "r")) == NULL) {
-        print_error("cannot open input file: %s", strerror(errno));
-        return 1;
-    }
-
-    if ((res->ref_file = fopen(opts->ref_file_path, "r")) == NULL) {
-        print_error("cannot open reference file: %s", strerror(errno));
-        return 1;
-    }
-
-    /* When backing up, the output file is truncated to hold the
-     * new data
-     */
-    if ((res->out_file = fopen(opts->out_file_path, "w+")) == NULL) {
-        print_error("cannot open output file: %s", strerror(errno));
-        return 1;
-    }
-
-    /* The output buffer contains also the offsets */
-    res->out_buffer_size =
-        ((opts->buffer_size / opts->sector_size) * sizeof(uint64_t)) +
-        opts->buffer_size;
-
-    // TODO: separate function
-    if ((res->in_buffer = (char *)malloc(opts->buffer_size)) == NULL) {
-        print_error("cannot allocate buffer for input file data");
-        return 1;
-    } else if ((res->ref_buffer = (char *)malloc(opts->buffer_size)) == NULL) {
-        print_error("cannot allocate buffer for reference file data");
-        return 1;
-    } else if ((res->out_buffer = (char *)malloc(res->out_buffer_size)) ==
-               NULL) {
-        print_error("cannot allocate buffer for output file data");
-        return 1;
-    }
-
-    return 0;
-}
-
-static void
-resources_init_for_restore(resources_restore_t *const res)
-{
-    res->in_file = NULL;
-    res->out_file = NULL;
-
-    res->in_buffer = NULL;
-    res->out_buffer = NULL;
-}
-
-static int
-resources_allocate_for_restore(const options_restore_t *const opts,
-                               resources_restore_t *const res)
-{
-    if ((res->in_file = fopen(opts->in_file_path, "r")) == NULL) {
-        print_error("cannot open input file: %s", strerror(errno));
-        return 1;
-    }
-
-    /* When restoring, the file must be opened for writing and not
-     * truncated
-     */
-    if ((res->out_file = fopen(opts->out_file_path, "r+")) == NULL) {
-        print_error("cannot open output file: %s", strerror(errno));
-        return 1;
-    }
-
-    /* Allocate the buffer for data from the input file */
-    /* The input buffer contains also the offsets */
-    res->in_sector_size = sizeof(uint64_t) + opts->sector_size;
-    const size_t in_buffer_sector_count =
-        opts->buffer_size / res->in_sector_size;
-    res->in_buffer_size = in_buffer_sector_count * res->in_sector_size;
-
-    if ((res->in_buffer = (char *)malloc(res->in_buffer_size)) == NULL) {
-        print_error("cannot allocate buffer for input file data");
-        return 1;
-    }
-
-    return 0;
-}
-
-static void
-resources_close_file(FILE **const file)
-{
-    if (*file != NULL) {
-        fclose(*file);
-        *file = NULL;
-    }
-}
-
-static void
-resources_close_buffer(char **const buffer)
-{
-    if (*buffer != NULL) {
-        free(*buffer);
-        *buffer = NULL;
-    }
-}
-
-static void
-resources_free_backup(resources_backup_t *const res)
-{
-    resources_close_file(&(res->in_file));
-    resources_close_file(&(res->ref_file));
-    resources_close_file(&(res->out_file));
-
-    resources_close_buffer(&(res->in_buffer));
-    resources_close_buffer(&(res->ref_buffer));
-    resources_close_buffer(&(res->out_buffer));
-}
-
-static void
-resources_free_restore(resources_restore_t *const res)
-{
-    resources_close_file(&(res->in_file));
-    resources_close_file(&(res->out_file));
-
-    resources_close_buffer(&(res->in_buffer));
-    resources_close_buffer(&(res->out_buffer));
-}
-
-int
-resources_allocate(const options_t *const opts, resources_t *const res)
-{
-    res->operation_id = opts->operation_id;
-
-    if (res->operation_id == OPERATION_ID_BACKUP) {
-        resources_init_for_backup(&(res->res.backup));
-        return resources_allocate_for_backup(&(opts->op.backup),
-                                             &(res->res.backup));
-    } else if (res->operation_id == OPERATION_ID_RESTORE) {
-        resources_init_for_restore(&(res->res.restore));
-        return resources_allocate_for_restore(&(opts->op.restore),
-                                              &(res->res.restore));
-    }
-
-    return 0;
-}
-
-const resources_backup_t *
-resources_get_for_backup(const resources_t *const res)
-{
-    return &(res->res.backup);
-}
-
-const resources_restore_t *
-resources_get_for_restore(const resources_t *const res)
-{
-    return &(res->res.restore);
-}
-
-void
-resources_free(resources_t *const res)
-{
-    if (res->operation_id == OPERATION_ID_BACKUP) {
-        resources_free_backup(&(res->res.backup));
-    } else if (res->operation_id == OPERATION_ID_RESTORE) {
-        resources_free_restore(&(res->res.restore));
-    }
-
-    res->operation_id = OPERATION_ID_UNKNOWN;
-}