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// --------------------------------------------------------------------------
//
// File
// Name: Utils.cpp
// Purpose: Utility function
// Created: 2003/07/31
//
// --------------------------------------------------------------------------
#include "Box.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#ifdef SHOW_BACKTRACE_ON_EXCEPTION
#include <execinfo.h>
#include <stdlib.h>
#endif
#include "Utils.h"
#include "CommonException.h"
#include "Logging.h"
#include "MemLeakFindOn.h"
// --------------------------------------------------------------------------
//
// Function
// Name: SplitString(const std::string &, char, std::vector<std::string> &)
// Purpose: Splits a string at a given character
// Created: 2003/07/31
//
// --------------------------------------------------------------------------
void SplitString(const std::string &String, char SplitOn, std::vector<std::string> &rOutput)
{
// Split it up.
std::string::size_type b = 0;
std::string::size_type e = 0;
while(e = String.find_first_of(SplitOn, b), e != String.npos)
{
// Get this string
unsigned int len = e - b;
if(len >= 1)
{
rOutput.push_back(String.substr(b, len));
}
b = e + 1;
}
// Last string
if(b < String.size())
{
rOutput.push_back(String.substr(b));
}
/*#ifndef NDEBUG
TRACE2("Splitting string '%s' on %c\n", String.c_str(), SplitOn);
for(unsigned int l = 0; l < rOutput.size(); ++l)
{
TRACE2("%d = '%s'\n", l, rOutput[l].c_str());
}
#endif*/
}
#ifdef SHOW_BACKTRACE_ON_EXCEPTION
void DumpStackBacktrace()
{
void *array[10];
size_t size;
char **strings;
size_t i;
size = backtrace (array, 10);
strings = backtrace_symbols (array, size);
BOX_TRACE("Obtained " << size << " stack frames.");
for(i = 0; i < size; i++)
{
BOX_TRACE(strings[i]);
}
#include "MemLeakFindOff.h"
free (strings);
#include "MemLeakFindOn.h"
}
#endif
// --------------------------------------------------------------------------
//
// Function
// Name: FileExists(const char *)
// Purpose: Does a file exist?
// Created: 20/11/03
//
// --------------------------------------------------------------------------
bool FileExists(const char *Filename, int64_t *pFileSize, bool TreatLinksAsNotExisting)
{
struct stat st;
if(::stat(Filename, &st) != 0)
{
if(errno == ENOENT)
{
return false;
}
else
{
THROW_EXCEPTION(CommonException, OSFileError);
}
}
// is it a file?
if((st.st_mode & S_IFDIR) == 0)
{
if(TreatLinksAsNotExisting && ((st.st_mode & S_IFLNK) != 0))
{
return false;
}
// Yes. Tell caller the size?
if(pFileSize != 0)
{
*pFileSize = st.st_size;
}
return true;
}
else
{
return false;
}
}
// --------------------------------------------------------------------------
//
// Function
// Name: ObjectExists(const std::string& rFilename)
// Purpose: Does a object exist, and if so, is it a file or a directory?
// Created: 23/11/03
//
// --------------------------------------------------------------------------
int ObjectExists(const std::string& rFilename)
{
struct stat st;
if(::stat(rFilename.c_str(), &st) != 0)
{
if(errno == ENOENT)
{
return ObjectExists_NoObject;
}
else
{
THROW_EXCEPTION(CommonException, OSFileError);
}
}
// is it a file or a dir?
return ((st.st_mode & S_IFDIR) == 0)?ObjectExists_File:ObjectExists_Dir;
}
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