326 lines
7.1 KiB
C++
326 lines
7.1 KiB
C++
/* Misc utils for files.
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Copyright (C) 2006 Artica ST.
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Written by Esteban Sanchez.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "pandora_file.h"
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#include <fstream>
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#include <iostream>
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#include <stdio.h>
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#include <windows.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <sys/stat.h>
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using namespace std;
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/**
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* Checks if a file exists.
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*
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* @param filepath Path of the file to check.
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*
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* @retval True if the file exists.
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**/
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bool
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Pandora_File::fileExists (const string filepath) {
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ifstream myfile (filepath.c_str ());
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if (! myfile.is_open ()) {
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return false;
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}
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myfile.close();
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return true;
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}
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/**
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* Reads a file and returns its content.
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*
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* @param filepath Path of the file to read.
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*
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* @return File content.
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*
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* @exception File_Not_Found throwed if the path is incorrect or the
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* file does not exists or could not be opened.
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**/
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int
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Pandora_File::readFile (const string filepath, string &result) {
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string line;
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ifstream myfile (filepath.c_str ());
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if (! myfile.is_open ()) {
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return FILE_NOT_FOUND;
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}
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if (myfile.is_open()) {
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while (! myfile.eof()) {
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getline (myfile,line);
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result += line + '\n';
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}
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myfile.close();
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}
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return 0;
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}
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/**
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* Reads a binary file and returns its content.
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*
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* @param filepath Path of the file to read.
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*
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* @exception File_Not_Found throwed if the path is incorrect or the
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* file does not exists or could not be opened.
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*
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* @note Memory allocated by this function must be freed at some point.
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**/
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int
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Pandora_File::readBinFile (const string filepath, char **buffer) {
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int length;
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ifstream file;
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if (buffer == NULL) {
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throw File_Exception ();
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}
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file.open (filepath.c_str(), ios::binary );
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if (! file.is_open ()) {
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throw File_Not_Found ();
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}
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/* Get file length */
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file.seekg (0, ios::end);
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length = file.tellg ();
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if (length < 1) {
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throw File_Exception ();
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}
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file.seekg (0, ios::beg);
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*buffer = new char [length];
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if (*buffer == NULL) {
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throw File_Exception ();
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}
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/* Read data */
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file.read (*buffer, length);
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file.close ();
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return length;
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}
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/**
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* Delete a file or a directory recursively.
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*
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* @param filepath Path of the file or directory to delete.
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*
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* @return non zero if the file could not be deleted.
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*/
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int
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Pandora_File::removeFile (const string filepath) {
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if (remove (filepath.c_str ()) == -1) {
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return DELETE_ERROR;
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}
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}
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/**
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* Delete a directory with all its content.
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*
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* @param filepath Path of the directory to delete.
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*
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* @return Delete_Error if the file could not be deleted.
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*/
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int
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Pandora_File::removeDir (const string filepath) {
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DIR *dir;
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struct dirent *dir_content;
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struct stat file;
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string tmp;
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/*Open the directory*/
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dir = opendir (filepath.c_str ());
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/*If not open*/
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if (dir == NULL) {
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/**If not exists*/
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if(errno == ENOENT) {
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return 0;
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} else {
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/*If its a file, delete it*/
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if(errno == ENOTDIR) {
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if (remove (filepath.c_str ()) == -1) {
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return DELETE_ERROR;
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}
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return 0;
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} else {
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return DELETE_ERROR;
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}
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}
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}
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/*If open*/
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/*Read the directory looking for files and folders*/
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dir_content = readdir(dir);
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while (dir_content != NULL) {
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string tmp = filepath+"\\"+dir_content->d_name;
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stat(tmp.c_str(),&file);
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switch (file.st_mode & S_IFMT) {
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case S_IFDIR:
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/*If tmp is a folder, recursive delete*/
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if ( (strcmp(dir_content->d_name,".") != 0) && (strcmp(dir_content->d_name,"..") != 0)){
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if( removeDir(tmp) == DELETE_ERROR ) {
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/*Close dir oppened*/
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closedir(dir);
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return DELETE_ERROR;
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}
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}
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break;
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default:
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/*If tmp is a file, it will be deleted*/
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if (remove (tmp.c_str ()) == -1) {
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/*Close dir oppened*/
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closedir(dir);
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return DELETE_ERROR;
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}
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break;
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}
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/*Next item*/
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dir_content = readdir(dir);
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}
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/*When the folder is empty, delete the folder*/
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if (rmdir (filepath.c_str ()) == -1) {
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/*Close dir oppened*/
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closedir(dir);
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return DELETE_ERROR;
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}
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/*Close dir oppened*/
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closedir(dir);
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return 0;
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}
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/**
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* Write data into a text file.
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*
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* @param filepath Path of the file to write in.
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* @param data Data to be written.
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*
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* @exception File_Not_Found throwed if the path is incorrect or the
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* file does not exists or could not be opened.
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*/
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void
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Pandora_File::writeFile (const string filepath, const string data) {
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ofstream file (filepath.c_str ());
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if (! file.is_open ()) {
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throw File_Not_Found ();
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}
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file.write (data.c_str (), data.length ());
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file.close ();
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}
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/**
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* Write binary data into a file.
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*
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* @param filepath Path of the file to write in.
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* @param data Data to be written.
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* @param size Data size in bytes.
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*
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* @exception File_Not_Found throwed if the path is incorrect or the
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* file does not exists or could not be opened.
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*/
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void
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Pandora_File::writeBinFile (const string filepath, const char *buffer, int size) {
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ofstream file;
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if (buffer == NULL) {
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throw File_Exception ();
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}
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file.open(filepath.c_str (), ios_base::binary | ios_base::trunc);
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if (! file.is_open ()) {
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throw File_Not_Found ();
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}
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file.write (buffer, size);
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file.close ();
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}
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/**
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* Returns the filename of a complete filepath.
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*
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* @param filepath
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*/
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string
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Pandora_File::fileName (const string filepath)
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{
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string filename;
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int pos;
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pos = filepath.find_last_of ("\\");
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if (pos != string::npos) {
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filename = filepath.substr (pos + 1);
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} else {
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filename = filepath;
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}
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return filename;
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}
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/**
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* Returns the 32 digit hexadecimal representation of the md5 hash
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* of the given data.
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*
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* @param data Data.
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* @param data Data size.
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* @param buffer Buffer where the 32 digit hex md5 will be stored.
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* Must be big enough to hold it!
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*/
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void
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Pandora_File::md5 (const char *data, int size, char *buffer)
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{
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int i;
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md5_state_t pms;
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md5_byte_t digest[16];
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if (buffer == NULL) {
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throw File_Exception ();
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}
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/* md5 hash */
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md5_init (&pms);
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md5_append (&pms, (unsigned char *)data, size);
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md5_finish (&pms, digest);
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/* 32 digit hexadecimal representation */
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for (i = 0; i < 16; i++) {
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snprintf (buffer + (i << 1), 3, "%.2x", (unsigned int)(digest[i]));
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}
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}
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