//-----------------------------------------------------------------------------
// Purpose:
// Input : *in -
// *out -
// outSize -
//-----------------------------------------------------------------------------
void V_StripExtension( const char *in, char *out, int outSize )
{
// Find the last dot. If it's followed by a dot or a slash, then it's part of a
// directory specifier like ../../somedir/./blah.
// scan backward for '.'
int end = V_strlen( in ) - 1;
while ( end > 0 && in[end] != '.' && !PATHSEPARATOR( in[end] ) )
{
--end;
}
if (end > 0 && !PATHSEPARATOR( in[end] ) && end < outSize)
{
int nChars = min( end, outSize-1 );
if ( out != in )
{
memcpy( out, in, nChars );
}
out[nChars] = 0;
}
else
{
// nothing found
if ( out != in )
{
V_strncpy( out, in, outSize );
}
}
}
bool DoesPathExistAlready( const char *pPathEnvVar, const char *pTestPath )
{
// Fix the slashes in the input arguments.
char correctedPathEnvVar[8192], correctedTestPath[MAX_PATH];
Q_strncpy( correctedPathEnvVar, pPathEnvVar, sizeof( correctedPathEnvVar ) );
Q_FixSlashes( correctedPathEnvVar );
pPathEnvVar = correctedPathEnvVar;
Q_strncpy( correctedTestPath, pTestPath, sizeof( correctedTestPath ) );
Q_FixSlashes( correctedTestPath );
if ( strlen( correctedTestPath ) > 0 && PATHSEPARATOR( correctedTestPath[strlen(correctedTestPath)-1] ) )
correctedTestPath[ strlen(correctedTestPath) - 1 ] = 0;
pTestPath = correctedTestPath;
const char *pCurPos = pPathEnvVar;
while ( 1 )
{
const char *pTestPos = Q_stristr( pCurPos, pTestPath );
if ( !pTestPos )
return false;
// Ok, we found pTestPath in the path, but it's only valid if it's followed by an optional slash and a semicolon.
pTestPos += strlen( pTestPath );
if ( pTestPos[0] == 0 || pTestPos[0] == ';' || (PATHSEPARATOR( pTestPos[0] ) && pTestPos[1] == ';') )
return true;
// Advance our marker..
pCurPos = pTestPos;
}
}
//-----------------------------------------------------------------------------
// Purpose: Extracts the base name of a file (no path, no extension, assumes '/' or '\' as path separator)
// Input : *in -
// *out -
// maxlen -
//-----------------------------------------------------------------------------
void V_FileBase( const char *in, char *out, int maxlen )
{
Assert( maxlen >= 1 );
Assert( in );
Assert( out );
if ( !in || !in[ 0 ] )
{
*out = 0;
return;
}
int len, start, end;
len = V_strlen( in );
// scan backward for '.'
end = len - 1;
while ( end&& in[end] != '.' && !PATHSEPARATOR( in[end] ) )
{
end--;
}
if ( in[end] != '.' ) // no '.', copy to end
{
end = len-1;
}
else
{
end--; // Found ',', copy to left of '.'
}
// Scan backward for '/'
start = len-1;
while ( start >= 0 && !PATHSEPARATOR( in[start] ) )
{
start--;
}
if ( start < 0 || !PATHSEPARATOR( in[start] ) )
{
start = 0;
}
else
{
start++;
}
// Length of new sting
len = end - start + 1;
int maxcopy = min( len + 1, maxlen );
// Copy partial string
V_strncpy( out, &in[start], maxcopy );
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *path -
// *extension -
// pathStringLength -
//-----------------------------------------------------------------------------
void V_DefaultExtension( char *path, const char *extension, int pathStringLength )
{
Assert( path );
Assert( pathStringLength >= 1 );
Assert( extension );
Assert( extension[0] == '.' );
char *src;
// if path doesn't have a .EXT, append extension
// (extension should include the .)
src = path + V_strlen(path) - 1;
while ( !PATHSEPARATOR( *src ) && ( src > path ) )
{
if (*src == '.')
{
// it has an extension
return;
}
src--;
}
// Concatenate the desired extension
V_strncat( path, extension, pathStringLength, COPY_ALL_CHARACTERS );
}
//-----------------------------------------------------------------------------
// Purpose: Returns a pointer to the beginning of the unqualified file name
// (no path information)
// Input: in - file name (may be unqualified, relative or absolute path)
// Output: pointer to unqualified file name
//-----------------------------------------------------------------------------
const char * V_UnqualifiedFileName( const char * in )
{
// back up until the character after the first path separator we find,
// or the beginning of the string
const char * out = in + strlen( in ) - 1;
while ( ( out > in ) && ( !PATHSEPARATOR( *( out-1 ) ) ) )
out--;
return out;
}
void V_FileBase(const char *in, char *out, int maxlen)
{
assert(maxlen >= 1);
assert(in);
assert(out);
if (!in || !in[0])
{
*out = 0;
return;
}
int len, start, end;
len = strlen(in);
end = len - 1;
while (end && in[end] != '.' && !PATHSEPARATOR(in[end]))
end--;
if (in[end] != '.')
end = len - 1;
else
end--;
start = len - 1;
while (start >= 0 && !PATHSEPARATOR(in[start]))
start--;
if (start < 0 || !PATHSEPARATOR(in[start]))
start = 0;
else
start++;
len = end - start + 1;
int maxcopy = min(len + 1, maxlen);
strncpy(out, &in[start], maxcopy);
out[maxcopy - 1] = 0;
}
void V_AppendSlash( char *pStr, int strSize )
{
int len = V_strlen( pStr );
if ( len > 0 && !PATHSEPARATOR(pStr[len-1]) )
{
if ( len+1 >= strSize )
Error( "V_AppendSlash: ran out of space on %s.", pStr );
pStr[len] = CORRECT_PATH_SEPARATOR;
pStr[len+1] = 0;
}
}
char *V_StripFirstDir (char *path)
{
int len_max;
len_max = V_strlen( path )-1;
if ( len_max <= 0 )
return NULL;
int pos = 0;
while ( pos <= len_max &&
!PATHSEPARATOR( path[pos] ) )
{
pos++;
}
if ( PATHSEPARATOR( path[pos] ) && pos < len_max )
pos++;
//path[ pos ] = 0;
return &path[ pos ];
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *ppath -
//-----------------------------------------------------------------------------
void V_StripTrailingSlash( char *ppath )
{
Assert( ppath );
int len = V_strlen( ppath );
if ( len > 0 )
{
if ( PATHSEPARATOR( ppath[ len - 1 ] ) )
{
ppath[ len - 1 ] = 0;
}
}
}
//-----------------------------------------------------------------------------
// Purpose: Strip off the last directory from dirName
// Input : *dirName -
// maxlen -
// Output : Returns true on success, false on failure.
//-----------------------------------------------------------------------------
bool V_StripLastDir( char *dirName, int maxlen )
{
if( dirName[0] == 0 ||
!V_stricmp( dirName, "./" ) ||
!V_stricmp( dirName, ".\\" ) )
return false;
int len = V_strlen( dirName );
Assert( len < maxlen );
// skip trailing slash
if ( PATHSEPARATOR( dirName[len-1] ) )
{
len--;
}
while ( len > 0 )
{
if ( PATHSEPARATOR( dirName[len-1] ) )
{
dirName[len] = 0;
V_FixSlashes( dirName, CORRECT_PATH_SEPARATOR );
return true;
}
len--;
}
// Allow it to return an empty string and true. This can happen if something like "tf2/" is passed in.
// The correct behavior is to strip off the last directory ("tf2") and return true.
if( len == 0 )
{
V_snprintf( dirName, maxlen, ".%c", CORRECT_PATH_SEPARATOR );
return true;
}
return true;
}
bool V_AppendSlash( char *pStr, int strSize )
{
int len = V_strlen( pStr );
if ( len > 0 && !PATHSEPARATOR(pStr[len-1]) )
{
if ( len+1 >= strSize ) {
ptERROR( "V_AppendSlash: ran out of space on %s.", pStr );
return false;
}
pStr[len] = CORRECT_PATH_SEPARATOR;
pStr[len+1] = 0;
}
return true;
}
//-----------------------------------------------------------------------------
// Purpose: Remove final filename from string
// Input : *path -
// Output : void V_StripFilename
//-----------------------------------------------------------------------------
void V_StripFilename (char *path)
{
int length;
length = V_strlen( path )-1;
if ( length <= 0 )
return;
while ( length > 0 &&
!PATHSEPARATOR( path[length] ) )
{
length--;
}
path[ length ] = 0;
}
void V_IsolateFirstDir (char *path)
{
int lengthMax;
int pos = 0;
lengthMax = V_strlen( path )-1;
if ( lengthMax <= 0 )
return;
while ( pos <= lengthMax &&
!PATHSEPARATOR( path[pos] ) )
{
pos++;
}
path[ pos ] = 0;
}
//-----------------------------------------------------------------------------
// Purpose: Returns a pointer to the file extension within a file name string
// Input: in - file name
// Output: pointer to beginning of extension (after the "."), or NULL
// if there is no extension
//-----------------------------------------------------------------------------
const char * V_GetFileExtension( const char * path )
{
const char *src;
src = path + strlen(path) - 1;
//
// back up until a . or the start
//
while (src != path && *(src-1) != '.' )
src--;
// check to see if the '.' is part of a pathname
if (src == path || PATHSEPARATOR( *src ) )
{
return NULL; // no extension
}
return src;
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *path -
// *dest -
// destSize -
// Output : void V_ExtractFilePath
//-----------------------------------------------------------------------------
bool V_ExtractFilePath (const char *path, char *dest, int destSize )
{
Assert( destSize >= 1 );
if ( destSize < 1 )
{
return false;
}
// Last char
int len = V_strlen(path);
const char *src = path + (len ? len-1 : 0);
// back up until a \ or the start
while ( src != path && !PATHSEPARATOR( *(src-1) ) )
{
src--;
}
int copysize = min( src - path, destSize - 1 );
memcpy( dest, path, copysize );
dest[copysize] = 0;
return copysize != 0 ? true : false;
}
//-----------------------------------------------------------------------------
// Makes a relative path
//-----------------------------------------------------------------------------
bool V_MakeRelativePath( const char *pFullPath, const char *pDirectory, char *pRelativePath, int nBufLen )
{
pRelativePath[0] = 0;
const char *pPath = pFullPath;
const char *pDir = pDirectory;
// Strip out common parts of the path
const char *pLastCommonPath = NULL;
const char *pLastCommonDir = NULL;
while ( *pPath && ( tolower( *pPath ) == tolower( *pDir ) ||
( PATHSEPARATOR( *pPath ) && ( PATHSEPARATOR( *pDir ) || (*pDir == 0) ) ) ) )
{
if ( PATHSEPARATOR( *pPath ) )
{
pLastCommonPath = pPath + 1;
pLastCommonDir = pDir + 1;
}
if ( *pDir == 0 )
{
--pLastCommonDir;
break;
}
++pDir; ++pPath;
}
// Nothing in common
if ( !pLastCommonPath )
return false;
// For each path separator remaining in the dir, need a ../
int nOutLen = 0;
bool bLastCharWasSeparator = true;
for ( ; *pLastCommonDir; ++pLastCommonDir )
{
if ( PATHSEPARATOR( *pLastCommonDir ) )
{
pRelativePath[nOutLen++] = '.';
pRelativePath[nOutLen++] = '.';
pRelativePath[nOutLen++] = CORRECT_PATH_SEPARATOR;
bLastCharWasSeparator = true;
}
else
{
bLastCharWasSeparator = false;
}
}
// Deal with relative paths not specified with a trailing slash
if ( !bLastCharWasSeparator )
{
pRelativePath[nOutLen++] = '.';
pRelativePath[nOutLen++] = '.';
pRelativePath[nOutLen++] = CORRECT_PATH_SEPARATOR;
}
// Copy the remaining part of the relative path over, fixing the path separators
for ( ; *pLastCommonPath; ++pLastCommonPath )
{
if ( PATHSEPARATOR( *pLastCommonPath ) )
{
pRelativePath[nOutLen++] = CORRECT_PATH_SEPARATOR;
}
else
{
pRelativePath[nOutLen++] = *pLastCommonPath;
}
// Check for overflow
if ( nOutLen == nBufLen - 1 )
break;
}
pRelativePath[nOutLen] = 0;
return true;
}
bool V_RemoveDotSlashes( char *pFilename, char separator )
{
// Remove '//' or '\\'
char *pIn = pFilename;
char *pOut = pFilename;
bool bPrevPathSep = false;
while ( *pIn )
{
bool bIsPathSep = PATHSEPARATOR( *pIn );
if ( !bIsPathSep || !bPrevPathSep )
{
*pOut++ = *pIn;
}
bPrevPathSep = bIsPathSep;
++pIn;
}
*pOut = 0;
// Get rid of "./"'s
pIn = pFilename;
pOut = pFilename;
while ( *pIn )
{
// The logic on the second line is preventing it from screwing up "../"
if ( pIn[0] == '.' && PATHSEPARATOR( pIn[1] ) &&
(pIn == pFilename || pIn[-1] != '.') )
{
pIn += 2;
}
else
{
*pOut = *pIn;
++pIn;
++pOut;
}
}
*pOut = 0;
// Get rid of a trailing "/." (needless).
int len = strlen( pFilename );
if ( len > 2 && pFilename[len-1] == '.' && PATHSEPARATOR( pFilename[len-2] ) )
{
pFilename[len-2] = 0;
}
// Each time we encounter a "..", back up until we've read the previous directory name,
// then get rid of it.
pIn = pFilename;
while ( *pIn )
{
if ( pIn[0] == '.' &&
pIn[1] == '.' &&
(pIn == pFilename || PATHSEPARATOR(pIn[-1])) && // Preceding character must be a slash.
(pIn[2] == 0 || PATHSEPARATOR(pIn[2])) ) // Following character must be a slash or the end of the string.
{
char *pEndOfDots = pIn + 2;
char *pStart = pIn - 2;
// Ok, now scan back for the path separator that starts the preceding directory.
while ( 1 )
{
if ( pStart < pFilename )
return false;
if ( PATHSEPARATOR( *pStart ) )
break;
--pStart;
}
// Now slide the string down to get rid of the previous directory and the ".."
memmove( pStart, pEndOfDots, strlen( pEndOfDots ) + 1 );
// Start over.
pIn = pFilename;
}
else
{
++pIn;
}
}
V_FixSlashes( pFilename, separator );
return true;
}
