TEST( PathTools, GetSlash )
{
#if defined( _WIN32 )
ASSERT_EQ( '\\', Path_GetSlash() );
#else
ASSERT_EQ( '/', Path_GetSlash() );
#endif
}
std::string Path_RemoveTrailingSlash(const std::string & sRawPath, char slash)
{
if (slash == 0)
slash = Path_GetSlash();
std::string sPath = sRawPath;
std::string::size_type nCurrent = sRawPath.length();
if (nCurrent == 0)
return sPath;
int nLastFound = -1;
nCurrent--;
while (nCurrent != 0)
{
if (sRawPath[nCurrent] == slash)
{
nLastFound = (int)nCurrent;
nCurrent--;
}
else
{
break;
}
}
if (nLastFound >= 0)
{
sPath.erase(nLastFound, std::string::npos);
}
return sPath;
}
/** returns just the filename from the provided full or relative path. */
std::string Path_StripDirectory(const std::string & sPath, char slash)
{
if (slash == 0)
slash = Path_GetSlash();
std::string::size_type n = sPath.find_last_of(slash);
if (n == std::string::npos)
return sPath;
else
return std::string(sPath.begin() + n + 1, sPath.end());
}
/** Returns the specified path without its filename */
std::string Path_StripFilename(const std::string& sPath, char slash)
{
if (slash == 0)
slash = Path_GetSlash();
std::string::size_type n = sPath.find_last_of(slash);
if (n == std::string::npos)
return sPath;
else
return std::string(sPath.begin(), sPath.begin() + n);
}
/** Fixes the directory separators for the current platform */
std::string Path_FixSlashes(const std::string & sPath, char slash)
{
if (slash == 0)
slash = Path_GetSlash();
std::string sFixed = sPath;
for (std::string::iterator i = sFixed.begin(); i != sFixed.end(); i++)
{
if (*i == '/' || *i == '\\')
* i = slash;
}
return sFixed;
}
/** Jams two paths together with the right kind of slash */
std::string Path_Join(const std::string & first, const std::string & second, char slash)
{
if (slash == 0)
slash = Path_GetSlash();
// only insert a slash if we don't already have one
std::string::size_type nLen = first.length();
if (!nLen)
return second;
#if defined(_WIN32)
if (first.back() == '\\' || first.back() == '/')
nLen--;
#else
char last_char = first[first.length() - 1];
if (last_char == '\\' || last_char == '/')
nLen--;
#endif
return first.substr(0, nLen) + std::string(1, slash) + second;
}
/** Removes redundant <dir>/.. elements in the path. Returns an empty path if the
* specified path has a broken number of directories for its number of ..s */
std::string Path_Compact(const std::string & sRawPath, char slash)
{
if (slash == 0)
slash = Path_GetSlash();
std::string sPath = Path_FixSlashes(sRawPath, slash);
std::string sSlashString(1, slash);
// strip out all /./
for (std::string::size_type i = 0; (i + 3) < sPath.length(); )
{
if (sPath[i] == slash && sPath[i + 1] == '.' && sPath[i + 2] == slash)
{
sPath.replace(i, 3, sSlashString);
}
else
{
++i;
}
}
// get rid of trailing /. but leave the path separator
if (sPath.length() > 2)
{
std::string::size_type len = sPath.length();
if (sPath[len - 1] == '.' && sPath[len - 2] == slash)
{
// sPath.pop_back();
sPath[len - 1] = 0; // for now, at least
}
}
// get rid of leading ./
if (sPath.length() > 2)
{
if (sPath[0] == '.' && sPath[1] == slash)
{
sPath.replace(0, 2, "");
}
}
// each time we encounter .. back up until we've found the previous directory name
// then get rid of both
std::string::size_type i = 0;
while (i < sPath.length())
{
if (i > 0 && sPath.length() - i >= 2
&& sPath[i] == '.'
&& sPath[i + 1] == '.'
&& (i + 2 == sPath.length() || sPath[i + 2] == slash)
&& sPath[i - 1] == slash)
{
// check if we've hit the start of the string and have a bogus path
if (i == 1)
return "";
// find the separator before i-1
std::string::size_type iDirStart = i - 2;
while (iDirStart > 0 && sPath[iDirStart - 1] != slash)
--iDirStart;
// remove everything from iDirStart to i+2
sPath.replace(iDirStart, (i - iDirStart) + 3, "");
// start over
i = 0;
}
else
{
++i;
}
}
return sPath;
}
