~ruther/CTU-FEE-B0B35APO-Semestral-project

4c1103881ad8516a60943d34383aeb819fdc13a3 — František Boháček 4 years ago 9b7c2ce
refactor: split local file access
M file-browser/include/local_file_utils.h => file-browser/include/local_file_utils.h +11 -0
@@ 1,5 1,6 @@
#include "file_access.h"
#include <stdbool.h>
#include "dirent.h"

int file_delete(const char *path);
int directory_delete(const char *path);


@@ 8,3 9,13 @@ size_t file_get_full_path_memory_size(fileaccess_state_t state,
                                        directory_t *directory, file_t *file);
bool file_get_full_path(fileaccess_state_t state, directory_t *directory,
                        file_t *file, char *dest);

file_operation_error_t file_get_information(void *malloced,
                                            uint64_t *file_offset,
                                            uint64_t *names_offset,
                                            fileaccess_state_t state,
                                            file_t file);

file_operation_error_t directory_list(fileaccess_state_t state, void *malloced,
                                      char *show_path, uint32_t files_count,
                                      DIR *dirptr, directory_t *directory);

M file-browser/src/local_file_access.c => file-browser/src/local_file_access.c +1 -79
@@ 40,44 40,6 @@ static uint64_t directory_get_needed_bytes(char *name, uint32_t *dirs_count, DIR
  return size;
}

static file_operation_error_t file_get_information(void *malloced,
                                                   uint64_t *file_offset,
                                                   uint64_t *names_offset,
                                                   fileaccess_state_t state,
                                                   file_t file) {
  size_t name_len = strlen(file.name);

  char full_path[file_get_full_path_memory_size(state, file.directory, &file)];
  file_get_full_path(state, file.directory, &file, full_path);

  // load info
  struct stat stats;
  int status = stat(full_path, &stats);

  if (status == -1) {
    file.size = 0;
    file.gid = 0;
    file.uid = 0;
    file.permissions = 0;
    file.modify_time = 0;
  } else {
    file.size = stats.st_size;
    file.gid = stats.st_gid;
    file.uid = stats.st_uid;
    file.permissions = stats.st_mode;
    file.modify_time = stats.st_mtim.tv_sec;
  }

  file_t *stored = malloced + *file_offset;
  *stored = file;
  *file_offset += sizeof(file_t);

  strcpy(malloced + *names_offset, file.name);
  stored->name = malloced + *names_offset;
  *names_offset += name_len + 1;

  return FILOPER_SUCCESS;
}

static int compare_files(const void *a, const void *b) {
  const file_t *file_a = (const file_t*)a;


@@ 104,8 66,6 @@ directory_or_error_t local_fileaccess_directory_list(fileaccess_state_t state,
  uint32_t files_count = 0;
  uint64_t size = directory_get_needed_bytes(show_path, &files_count, dirptr);

  uint64_t files_offset = sizeof(directory_t) + strlen(show_path) + 1;
  uint64_t names_offset = files_count * sizeof(file_t) + files_offset;
  directory_t *directory = malloc(size);
  void *malloced = directory;



@@ 115,45 75,7 @@ directory_or_error_t local_fileaccess_directory_list(fileaccess_state_t state,
    return ret;
  }

  directory->path = malloced + sizeof(directory_t);
  directory->files = malloced + files_offset;
  directory->files_count = 0;
  strcpy(directory->path, show_path);

  struct dirent * dir;
  errno = 0;
  while ((dir = readdir(dirptr)) != NULL) {
    file_t file;
    file.directory = directory;
    file.name = dir->d_name;

    switch(dir->d_type) {
    case DT_DIR:
      file.type = FT_FOLDER;
      break;
    case DT_REG:
      file.type = FT_FILE;
      break;
    case DT_UNKNOWN:
      file.type = FT_UNKNOWN;
      break;
    default:
      file.type = FT_OTHER;
      break;
    }

    ret.payload.error = file_get_information(malloced, &files_offset,
                                             &names_offset, state, file);
    errno = 0;
    if (ret.payload.error != FILOPER_SUCCESS) {
      ret.error = true;
      return ret;
    }

    directory->files_count++;
  }

  closedir(dirptr);
  directory_list(state, malloced, show_path, files_count, dirptr, directory);

  if (errno != 0) {
    free(malloced);

M file-browser/src/local_file_utils.c => file-browser/src/local_file_utils.c +88 -0
@@ 6,6 6,7 @@
#include <ftw.h>
#include <string.h>
#include <stdio.h>
#include "dirent.h"

static int nfw_callback(const char *fpath, const struct stat *sb, int typeflag);



@@ 62,3 63,90 @@ static int nfw_callback(const char *fpath, const struct stat *sb,
  }
}


file_operation_error_t file_get_information(void *malloced,
                                                   uint64_t *file_offset,
                                                   uint64_t *names_offset,
                                                   fileaccess_state_t state,
                                                   file_t file) {
  size_t name_len = strlen(file.name);

  char full_path[file_get_full_path_memory_size(state, file.directory, &file)];
  file_get_full_path(state, file.directory, &file, full_path);

  // load info
  struct stat stats;
  int status = stat(full_path, &stats);

  if (status == -1) {
    file.size = 0;
    file.gid = 0;
    file.uid = 0;
    file.permissions = 0;
    file.modify_time = 0;
  } else {
    file.size = stats.st_size;
    file.gid = stats.st_gid;
    file.uid = stats.st_uid;
    file.permissions = stats.st_mode;
    file.modify_time = stats.st_mtim.tv_sec;
  }

  file_t *stored = malloced + *file_offset;
  *stored = file;
  *file_offset += sizeof(file_t);

  strcpy(malloced + *names_offset, file.name);
  stored->name = malloced + *names_offset;
  *names_offset += name_len + 1;

  return FILOPER_SUCCESS;
}

file_operation_error_t directory_list(fileaccess_state_t state, void *malloced,
                                      char *show_path, uint32_t files_count,
                                      DIR *dirptr, directory_t *directory) {
  uint64_t files_offset = sizeof(directory_t) + strlen(show_path) + 1;
  uint64_t names_offset = files_count * sizeof(file_t) + files_offset;

  file_operation_error_t error = FILOPER_SUCCESS;
  directory->path = malloced + sizeof(directory_t);
  directory->files = malloced + files_offset;
  directory->files_count = 0;
  strcpy(directory->path, show_path);

  struct dirent *dir;
  errno = 0;
  while ((dir = readdir(dirptr)) != NULL) {
    file_t file;
    file.directory = directory;
    file.name = dir->d_name;

    switch (dir->d_type) {
    case DT_DIR:
      file.type = FT_FOLDER;
      break;
    case DT_REG:
      file.type = FT_FILE;
      break;
    case DT_UNKNOWN:
      file.type = FT_UNKNOWN;
      break;
    default:
      file.type = FT_OTHER;
      break;
    }

    error = file_get_information(malloced, &files_offset,
                                 &names_offset, state, file);
    errno = 0;
    if (error != FILOPER_SUCCESS) {
      return error;
    }

    directory->files_count++;
  }

  closedir(dirptr);
  return error;
}