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Es++ Class: FileAttributes
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Source code
/******************************************************************************
*
* Copyright (c) 2017 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*
* FileAttributes.h
*
*****************************************************************************/
#pragma once
#include <es++/Object.h>
#include <es++/Exception.h>
#include <es++/StringT.h>
#include <es++/CharString.h>
#include <sys/stat.h>
#include <pwd.h>
#include <grp.h>
/*
struct stat {
dev_t st_dev; // ID of device containing file
ino_t st_ino; // inode number
mode_t st_mode; // protection
nlink_t st_nlink; // number of hard links
uid_t st_uid; // user ID of owner
gid_t st_gid; // group ID of owner
dev_t st_rdev; // device ID (if special file)
off_t st_size; // total size, in bytes
blksize_t st_blksize; // blocksize for file system I/O
blkcnt_t st_blocks; // number of 512B blocks allocated
time_t st_atime; // time of last access
time_t st_mtime; // time of last modification
time_t st_ctime; // time of last status change
};
*/
namespace Es {
class FileAttributes :public Es::Object {
public:
static enum {
DEV = (1 << 0),
INO = (1 << 1),
MODE = (1 << 2),
NLINK = (1 << 3),
UID = (1 << 4),
GID = (1 << 5),
RDEV = (1 << 6),
SIZE = (1 << 7 ),
BLKSIZE = (1 << 8),
BLOCKS = (1 << 9),
ATIME = (1 << 10),
MTIME = (1 << 11),
CTIME = (1 << 12),
} ATTRIBUTES;
static const int MAX = (DEV |INO | MODE |NLINK |\
UID | GID | RDEV |SIZE | BLKSIZE | BLOCKS |ATIME |MTIME|CTIME);
static const int MIN = (MODE |UID |GID | SIZE | MTIME);
static int displayItems(int items = 0)
{
static int dispItems = MIN;
if (items >0) {
dispItems = items;
}
return dispItems;
}
private:
struct stat st;
//2014/12/05
CharString fullpath;
public:
FileAttributes(const struct stat& st, const char* path)
:st(st),
fullpath(path)
{
}
public:
FileAttributes(const char* path)
{
fullpath = path;
if( stat(path, &st) != 0) {
throw Exception("Failed to stat(%s); %s", path, error() );
}
}
public:
CharString& getPath()
{
return fullpath;
}
public:
dev_t getDeviceID()
{
return st.st_dev;
}
ino_t getINode()
{
return st.st_ino;
}
mode_t getMode()
{
return st.st_mode;
}
//2014/12/05
bool isRegularFile()
{
return S_ISREG(st.st_mode);
}
bool isDirectory()
{
return S_ISDIR(st.st_mode);
}
bool isCharcterDevice()
{
return S_ISCHR(st.st_mode);
}
bool isBlockDevice()
{
return S_ISBLK(st.st_mode);
}
bool isFIFO()
{
return S_ISFIFO(st.st_mode);
}
bool isSymbolicLink()
{
return S_ISLNK(st.st_mode);
}
bool isSocket()
{
return S_ISSOCK(st.st_mode);
}
bool isExecutable()
{
bool rc = false;
if ((st.st_mode & S_IXUSR) ||
(st.st_mode & S_IXGRP) ||
(st.st_mode & S_IXOTH) ) {
rc = true;
}
return rc;
}
//
CharString modeToString( )
{
char string[11];
memset(string, '-', 10);
string[10] = '\0';
if (S_ISDIR(st.st_mode)) string[0] = 'd';
if (S_ISCHR(st.st_mode)) string[0] = 'c';
if (S_ISBLK(st.st_mode)) string[0] = 'b';
if (st.st_mode & S_IRUSR) string[1] = 'r';
if (st.st_mode & S_IWUSR) string[2] = 'w';
if (st.st_mode & S_IXUSR) string[3] = 'x';
if (st.st_mode & S_IRGRP) string[4] = 'r';
if (st.st_mode & S_IWGRP) string[5] = 'w';
if (st.st_mode & S_IXGRP) string[6] = 'x';
if (st.st_mode & S_IROTH) string[7] = 'r';
if (st.st_mode & S_IWOTH) string[8] = 'w';
if (st.st_mode & S_IXOTH) string[9] = 'x';
return CharString(string);
}
nlink_t getNLink()
{
return st.st_nlink;
}
uid_t getUid()
{
return st.st_uid;
}
CharString uidToName()
{
const char* name = "";
struct passwd* pw = getpwuid(st.st_uid);
if (pw) {
name = pw->pw_name;
}
return CharString(name);
}
gid_t getGid()
{
return st.st_gid;
}
CharString gidToName()
{
const char* name = "";
struct group* gr = getgrgid(st.st_gid);
if (gr) {
name = gr->gr_name;
}
return CharString(name);
}
dev_t getRDev()
{
return st.st_rdev;
}
off_t getSize()
{
return st.st_size;
}
long getSizeKB()
{
long size = getSize();
long kbsize = size/1024;
int remain = (int)(size % 1024);
if (kbsize == 0 && remain > 0) {
kbsize = 1;
}
return kbsize;
}
blksize_t getBlokSize()
{
return st.st_blksize;
}
blkcnt_t getBlocks()
{
return st.st_blocks;
}
void localTime(time_t& timer, StringT<char>& string)
{
struct tm tm;
localtime_r(&timer, &tm);
char buff[80];
memset(buff, 0, sizeof(buff));
snprintf(buff, sizeof(buff),
"%04d/%02d/%02d %02d:%02d:%02d",
tm.tm_year+1900,
tm.tm_mon+1,
tm.tm_mday,
tm.tm_hour,
tm.tm_min,
tm.tm_sec);
string = buff;
}
const char* getAccessTime()
{
return ctime(&st.st_atime);
}
void getAccessTime(StringT<char>& string)
{
time_t timer = st.st_atime;
localTime(timer, string);
}
const char* getModifiedTime()
{
return ctime(&st.st_mtime);
}
void getModifiedTime(StringT<char>& string)
{
time_t timer = st.st_mtime;
localTime(timer, string);
}
const char* getCurrentTime()
{
return ctime(&st.st_ctime);
}
void getCurrentTime(StringT<char>& string)
{
time_t timer = st.st_ctime;
localTime(timer, string);
}
time_t accessesTime()
{
return st.st_atime; // time of last access
}
time_t modifiedTime()
{
return st.st_mtime; // time of last modification
}
time_t changedTime()
{
return st.st_ctime; // time of last status change
}
//2014/12/05
public:
int compare(Es::Object* object)
{
int rc = 0;
if (object==NULL) {
return rc;
}
const char* p1 = (const char*)this->fullpath;
FileAttributes* attr = (FileAttributes*)object;
const char* p2 = (const char*)attr->getPath();
if (p1 == NULL && p2 == NULL) {
rc = 1;
}
if (p1 != NULL && p2 != NULL) {
rc = __strcmp(p1, p2);
}
return rc;
}
public:
void display()
{
int items = displayItems();
printf("path : %s\n", (const char*)fullpath);
if (items & DEV) {
printf("device_id : %llu\n", st.st_dev);
}
if (items & INO) {
printf("inode: %ld\n", st.st_ino);
}
if (items & MODE) {
printf("mode: %s\n", (const char*)modeToString());
}
if (items & NLINK) {
printf("nlink: %d\n", st.st_nlink);
}
if (items & UID) {
printf("uid : %s\n", (const char*)uidToName());
}
if (items & GID) {
printf("gid: %s\n", (const char*)gidToName());
}
if (items & RDEV) {
printf("rdev: %llu\n", st.st_rdev);
}
if (items & SIZE) {
printf("size: %ld\n", st.st_size);
}
if (items & BLKSIZE) {
printf("block_size: %ld\n", st.st_blksize);
}
if (items & BLOCKS) {
printf("blocks: %ld\n", st.st_blocks);
}
if (items & CTIME) {
printf("access_time: %s",ctime(&st.st_atime));
}
if (items & MTIME) {
printf("modified_time: %s",ctime(&st.st_mtime));
}
if (items & CTIME) {
printf("current_time: %s",ctime(&st.st_ctime));
}
printf("\n");
}
};
}
Last modified: 27 July 2017
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