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File.cpp
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/******************************************************************************/
/* */
/* Copyright (c) 2010, 2014 Sylwester Wysocki <[email protected]> */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining a */
/* copy of this software and associated documentation files (the "Software"), */
/* to deal in the Software without restriction, including without limitation */
/* the rights to use, copy, modify, merge, publish, distribute, sublicense, */
/* and/or sell copies of the Software, and to permit persons to whom the */
/* Software is furnished to do so, subject to the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be included in */
/* all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR */
/* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, */
/* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL */
/* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER */
/* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING */
/* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER */
/* DEALINGS IN THE SOFTWARE. */
/* */
/******************************************************************************/
#include <sys/stat.h>
#include <dirent.h>
#include <cstring>
#include <string>
#include <vector>
#include <stack>
#include <fstream>
#ifdef WIN32
#include <windows.h>
#include <io.h>
#endif
#include <Tegenaria/Debug.h>
#include "File.h"
#include "Internal.h"
namespace Tegenaria
{
using namespace std;
//
// Load file to new allocate buffer.
//
// fname - name of file to load (IN).
// readed - number of bytes allocated and readed (OUT/OPT).
//
// RETURNS: New allocated buffer or NULL if fail.
//
char *FileLoad(const char *fname, int *readed)
{
char *buf = NULL;
int fsize = 0;
FILE *f = NULL;
//DBG_MSG("LoadFile(\"%s\")...\n", fname);
//
// Open file.
//
f = fopen(fname, "rb");
FAIL(f == NULL);
//
// Get file size.
//
FAIL(fseek(f, 0, 2) < 0);
fsize = ftell(f);
//
// Allocate buffer.
//
buf = (char *) malloc(sizeof(char) * (fsize + 2));
FAIL(buf == NULL);
//
// Read file.
//
fseek(f, 0, 0);
if (fsize > 0)
{
FAIL(fread(buf, fsize, 1, f) != 1);
buf[fsize] = 0;
buf[fsize + 1] = 0;
}
else
{
free(buf);
buf = NULL;
}
fclose(f);
if (readed)
{
*readed = fsize;
}
return buf;
fail:
return NULL;
}
//
// Make file list in given directory.
//
// path - directory where to search (IN)
// mask - file mask (e.g. '*.dat') (IN)
// files - output file list (OUT)
// recursive - search also in subdirs, if set to true (IN)
// flags - combination of FILE_XXX flags defined in File.h (IN/OPT).
//
// RETURNS: 0 if OK
//
int ListFiles(string path, string mask, vector<string>& files,
bool recursive, unsigned int flags)
{
//
// Windows.
//
#ifdef WIN32
HANDLE hFind = INVALID_HANDLE_VALUE;
WIN32_FIND_DATA ffd;
string spec;
stack<string> directories;
directories.push(path);
files.clear();
while (!directories.empty())
{
path = directories.top();
spec = path + "\\" + mask;
directories.pop();
hFind = FindFirstFile(spec.c_str(), &ffd);
if (hFind == INVALID_HANDLE_VALUE)
{
return -1;
}
do
{
if (strcmp(ffd.cFileName, ".") != 0 && strcmp(ffd.cFileName, "..") != 0)
{
if (recursive && ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
directories.push(path + "\\" + ffd.cFileName);
}
else if ((ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0)
{
files.push_back(ffd.cFileName);
}
}
} while (FindNextFile(hFind, &ffd) != 0);
if (GetLastError() != ERROR_NO_MORE_FILES)
{
FindClose(hFind);
return -1;
}
FindClose(hFind);
hFind = INVALID_HANDLE_VALUE;
}
return 0;
//
// Linux, Mac.
//
#else
fprintf(stderr, "ERROR: ListFiles() is not implemented yet.\n");
return -1;
#endif
}
//
// Make directories list in given directory.
//
// path - directory where to search (IN)
// mask - file mask (IN)
// files - output file list (OUT)
// recursive - list subdirs if true (IN)
// flags - combination of FILE_XXX flags defined in File.h (IN/OPT).
//
// RETURNS: 0 if OK
//
int ListDirs(string path, string mask, vector<string>& dirs,
bool recursive, unsigned int flags)
{
//
// Windows.
//
#ifdef WIN32
HANDLE hFind = INVALID_HANDLE_VALUE;
WIN32_FIND_DATA ffd;
string spec;
int skip = path.size();
stack<string> directories;
directories.push(path);
dirs.clear();
while (!directories.empty())
{
path = directories.top();
spec = path + "\\" + mask;
directories.pop();
hFind = FindFirstFile(spec.c_str(), &ffd);
if (hFind == INVALID_HANDLE_VALUE)
{
return -1;
}
do
{
//
// Skip hidden if needed.
//
if (flags & FILE_SKIP_HIDDEN)
{
if (ffd.dwFileAttributes == FILE_ATTRIBUTE_HIDDEN)
{
continue;
}
if (ffd.cFileName[0] == '.')
{
continue;
}
}
//
// Parse dir.
//
if (strcmp(ffd.cFileName, ".") != 0 && strcmp(ffd.cFileName, "..") != 0)
{
if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
if (path.size() == skip)
{
dirs.push_back(ffd.cFileName);
}
else
{
dirs.push_back(path.substr(skip + 1) + "\\" + ffd.cFileName);
}
if (recursive)
{
directories.push(path + "\\" + ffd.cFileName);
}
}
}
} while (FindNextFile(hFind, &ffd) != 0);
if (GetLastError() != ERROR_NO_MORE_FILES)
{
FindClose(hFind);
return -1;
}
FindClose(hFind);
hFind = INVALID_HANDLE_VALUE;
}
return 0;
//
// Linux, MacOS.
//
#else
string spec;
int skip = path.size();
stack<string> directories;
directories.push(path);
dirs.clear();
while (!directories.empty())
{
path = directories.top();
spec = path + "/";
directories.pop();
DIR *dir = opendir(spec.c_str());
if (dir == NULL)
{
fprintf(stderr, "ERROR: Cannot open directory '%s'.\n", spec.c_str());
return -1;
}
//
//
//
struct dirent *direntp = NULL;
while ((direntp = readdir(dir)) != NULL)
{
//
// Skip hidden directories if needed.
//
if (flags & FILE_SKIP_HIDDEN && direntp -> d_name[0] == '.')
{
continue;
}
//
// Parse directory.
//
if (strcmp(direntp -> d_name, ".") != 0 && strcmp(direntp -> d_name, "..") != 0)
{
struct stat stat_buf = {0};
int ret = stat((path + "/" + direntp -> d_name).c_str(), &stat_buf);
if (S_ISDIR(stat_buf.st_mode))
{
if (path.size() == skip)
{
dirs.push_back(direntp -> d_name);
}
else
{
dirs.push_back(path.substr(skip + 1) + "/" + direntp -> d_name);
}
if (recursive)
{
directories.push(path + "/" + direntp -> d_name);
}
}
}
}
closedir(dir);
}
return 0;
#endif
}
//
// Compare two files.
//
// stat - result of comparison (1 if equal, 0 if not) (OUT).
// fname1 - first file to compare (IN).
// fname2 - second file to compare (IN).
//
// RETURNS: 0 if OK.
//
int FileCompare(int &stat, const string &fname1, const string &fname2)
{
int exitCode = -1;
ifstream f1(fname1.c_str());
ifstream f2(fname2.c_str());
FAIL(f1.fail());
FAIL(f2.fail());
stat = 1;
while(f1.good() || f2.good())
{
char c1;
char c2;
f1.get(c1);
f2.get(c2);
if (c1 != c2)
{
stat = 0;
break;
}
}
exitCode = 0;
fail:
f1.close();
f2.close();
return exitCode;
}
//
// Check does file or directory exists on disk.
//
// path - path to check (IN).
//
// RETURNS: 1 if file exists.
//
int FileExists(const string &path)
{
int exist = 0;
struct stat buf;
if (stat(path.c_str(), &buf) == 0)
{
exist = 1;
DEBUG3("FileExists: Path [%s] exists.\n", path.c_str());
}
else
{
DEBUG3("FileExists: Path [%s] does not exists.\n", path.c_str());
}
return exist;
}
//
// Wait until given file exists on disk.
//
// fname - file name to wait (IN).
//
// timeout - maximum allowed wait time in ms. Defaulted to
// infinite if skipped (IN/OPT).
//
// RETURNS: 0 if file found within timeout,
// -1 if timeout reached.
//
int FileWait(const char *fname, int timeout)
{
DBG_ENTER("FileWait");
int exitCode = -1;
//
// Infinite loop.
//
if (timeout < 0)
{
while(FileExists(fname) == 0)
{
#ifdef WIN32
Sleep(10);
#else
usleep(10000);
#endif
}
}
//
// Timeouted loop.
//
else
{
while(timeout > 0 && FileExists(fname) == 0)
{
#ifdef WIN32
Sleep(10);
#else
usleep(10000);
#endif
timeout -= 10;
}
FAILEX(timeout <= 0, "ERROR: Timeout while waiting for [%s] file.\n", fname);
}
//
// Error handler.
//
exitCode = 0;
fail:
DBG_LEAVE("FileWait");
return exitCode;
}
//
// Remove file from disk.
//
// fname - path to file which we want to delete (IN).
//
// RETURNS: 0 if OK.
//
int FileDelete(const char *fname)
{
int exitCode = -1;
#ifdef WIN32
{
FAIL(DeleteFile(fname) == FALSE);
}
#else
{
FAIL(unlink(fname) != 0);
}
#endif
DEBUG2("FileDelete: File [%s] deleted.\n", fname);
//
// Error handler.
//
exitCode = 0;
fail:
if (exitCode)
{
Error("ERROR: Cannot delete file [%s]. Error is %d.\n", fname, GetLastError());
}
return exitCode;
}
//
// Create directory recursively at one call.
//
// target - path to create (e.g. 'A/B/C/D') (IN).
//
// RETURNS: 0 if OK.
//
int FileCreateRecursiveDir(const string &target)
{
int exitCode = -1;
string path = target + "/";
for (int i = 0; i < path.size(); i++)
{
if (path[i] == '\\' || path[i] == '/')
{
path[i] = 0;
//
// Windows.
//
#ifdef WIN32
{
if (path[0] && FileExists(path.c_str()) == 0)
{
FAILEX(CreateDirectory(path.c_str(), NULL) == FALSE,
"ERROR: Cannot create [%s] dir.\n", path.c_str());
}
path[i] = '\\';
}
//
// Linux, MacOS.
//
#else
{
if (path[0] && FileExists(path.c_str()) == 0)
{
FAILEX(mkdir(path.c_str(), 0755),
"ERROR: Cannot create [%s] dir.\n", path.c_str());
}
path[i] = '/';
}
#endif
}
}
//
// Error handler.
//
exitCode = 0;
fail:
if (exitCode)
{
Error("ERROR: Cannot create [%s] path. Error code is %d.\n",
target.c_str(), GetLastError());
}
return exitCode;
}
//
// Create single directory.
// TIP#1: Use FileCreateRecursiveDir() to create whole path recursively.
//
// path - target path to create (IN).
// quiet - do not write error message if set to 1 (IN).
//
// RETURNS: 0 if OK.
//
int FileCreateDir(const string &path, int quiet)
{
int exitCode = -1;
#ifdef WIN32
{
FAIL(CreateDirectory(path.c_str(), NULL) == FALSE);
}
#else
{
FAIL(mkdir(path.c_str(), 0755));
}
#endif
//
// Error handler.
//
exitCode = 0;
fail:
if (exitCode && quiet == 0)
{
Error("ERROR: Cannot create [%s] dir."
"Error code is : %d.\n", path.c_str(), GetLastError());
}
return exitCode;
}
//
// Save buffer to file. If file already exists will be overwritten.
//
// fname - path to output file (IN).
// buf - buffer to dump (IN).
// size - size of buf[] buffer in bytes (IN).
//
// RETURNS: 0 if OK.
//
int FileSave(const char *fname, const char *buf, int size)
{
int exitCode = -1;
FILE *f = fopen(fname, "wb+");
FAIL(f == NULL);
fwrite(buf, size, 1, f);
exitCode = 0;
fail:
if (f)
{
fclose(f);
}
return exitCode;
}
//
// Get current working directory.
//
// path - buffer where to store retrieved directory (OUT).
// pathSize - size of path[] buffer in bytes (IN).
//
// RETURNS: 0 if OK.
//
int FileGetDir(char *path, int pathSize)
{
int exitCode = -1;
#ifdef WIN32
FAIL(GetCurrentDirectory(pathSize - 1, path) == FALSE);
#else
FAIL(getcwd(path, pathSize - 1) == NULL);
#endif
//
// Error handler.
//
fail:
return exitCode;
}
//
// Change current working directory.
//
// path - new working directory to set (e.g. 'c:/tmp') (IN).
//
// RETURN: 0 if OK.
//
int FileSetDir(const char *path)
{
int exitCode = -1;
FAIL(path == NULL);
if (path[0])
{
#ifdef WIN32
FAIL(SetCurrentDirectory(path) == FALSE);
#else
FAIL(chdir(path));
#endif
}
//
// Error handler.
//
exitCode = 0;
fail:
if (exitCode)
{
Error("ERROR: Cannot set working directory to '%s'.\n", path);
}
return exitCode;
}
//
// Get root filename from path, eg. it retrieve
// 'file' from 'c:/tmp/file.dat'.
//
// path - path to split (IN).
//
// RETURNS: Root filename part or empty string if error.
//
string FileGetRootName(const string &path)
{
#ifdef WIN32
char root[MAX_PATH + 1] = "";
_splitpath(path.c_str(), NULL, NULL, root, NULL);
return string(root);
#else
fprintf(stderr, "ERROR: Not implemented.\n");
return "";
#endif
}
//
// Genearete temporary filename (WITHOUT creating the file).
// Ouput path has format : '<BaseDir>/<prefix>XXX.YYY',
// where XXX.YYY are generated unique name and extension.
//
// baseDir - directory, where to store file. System temp will be
// used if skipped (IN/OPT).
//
// prefix - prefix to add before filename (IN/OPT).
//
// RETURNS: Abosolute path to temporary file or
// empty string if error.
//
//
string FileCreateTempName(const char *baseDir, const char *prefix)
{
#ifdef WIN32
int exitCode = -1;
char base[MAX_PATH + 1] = {0};
char path[MAX_PATH + 1] = {0};
char fname[MAX_PATH + 1] = {0};
if (baseDir == NULL)
{
GetTempPath(MAX_PATH, base);
}
else
{
strncpy(base, baseDir, MAX_PATH);
}
FAIL(GetTempFileName(base, prefix, 0, fname) == 0);
//
// Error handler.
//
exitCode = 0;
fail:
if (exitCode)
{
fprintf(stderr, "ERROR: Cannot crate temp name.\n"
"Error code is : %d.\n", GetLastError());
}
return string(fname);
#else
fprintf(stderr, "ERROR: Not implemented.\n");
return "";
#endif
}
int CanonizePath(string &path)
{
#ifdef WIN32
char fullPath[MAX_PATH + 1];
if (GetFullPathName(path.c_str(), MAX_PATH, fullPath, NULL) == FALSE)
{
return -1;
}
path = fullPath;
return 0;
#else
return -1;
#endif
};
//
// Retrieve size of given file.
//
// fname - path to check (e.g. 'c:/tmp/test.dat') (IN).
//
// RETURNS: Size of file in bytes or -1 if error.
//
int FileSize(const char *fname)
{
int fsize = -1;
FILE *f = NULL;
//
// Open file.
//
f = fopen(fname, "rb");
FAIL(f == NULL);
//
// Get file size.
//
FAIL(fseek(f, 0, 2) < 0);
fsize = ftell(f);
fail:
if (fsize < 0)
{
fprintf(stderr, "ERROR: Cannot get size of [%s] file.\n", fname);
}
if (f)
{
fclose(f);
}
return fsize;
}
//
// Normalize slashes in path to '/' or '\\'.
//
// path - path to normalize (IN/OUT).
// slash - new slash character to use ('/' or '\\') (IN).
//
void FileNormalizeSlash(char *path, char slash)
{
//
// Remove extra slash at the end.
//
int pathLen = strlen(path);
while((pathLen > 0) && ((path[pathLen - 1] == '\\') || (path[pathLen - 1] == '/')))
{
path[pathLen - 1] = 0;
pathLen --;
}
//
// Normalize slashes.
//
for (int i = 0; path[i]; i++)
{
if (path[i] == '/' || path[i] == '\\')
{
path[i] = slash;
}
}
}
//
// Normalize slashes in widechar path to L'/' or L'\\'.
//
// path - path to normalize (IN/OUT).
// slash - new slash character to use (L'/' or L'\\') (IN).