FBCALL FB_WCHAR *fb_WstrTrim ( const FB_WCHAR *src )
{
FB_WCHAR *dst;
const FB_WCHAR *p;
ssize_t chars;
if( src == NULL )
return NULL;
chars = fb_wstr_Len( src );
if( chars <= 0 )
return NULL;
p = fb_wstr_SkipCharRev( src, chars, _LC(' ') );
chars = fb_wstr_CalcDiff( src, p );
if( chars <= 0 )
return NULL;
p = fb_wstr_SkipChar( src, chars, _LC(' ') );
chars -= fb_wstr_CalcDiff( src, p );
if( chars <= 0 )
return NULL;
/* alloc temp string */
dst = fb_wstr_AllocTemp( chars );
if( dst != NULL )
{
/* simple copy */
fb_wstr_Copy( dst, p, chars );
}
return dst;
}
/*:::::*/
FBCALL FB_WCHAR *fb_WstrRight ( const FB_WCHAR *src, int chars )
{
FB_WCHAR *dst;
int len, src_len;
if( src == NULL )
return NULL;
src_len = fb_wstr_Len( src );
if( (chars <= 0) || (src_len == 0) )
return NULL;
if( chars > src_len )
len = src_len;
else
len = chars;
/* alloc temp string */
dst = fb_wstr_AllocTemp( len );
if( dst != NULL )
{
/* simple rev copy */
fb_wstr_Copy( dst, &src[src_len - len], len );
}
return dst;
}
FBCALL FB_WCHAR *fb_WstrTrimEx ( const FB_WCHAR *src, const FB_WCHAR *pattern )
{
FB_WCHAR *dst;
ssize_t len;
const FB_WCHAR *p = src;
if( src == NULL ) {
return NULL;
}
{
ssize_t len_pattern = fb_wstr_Len( pattern );
len = fb_wstr_Len( src );
if( len >= len_pattern ) {
if( len_pattern==1 ) {
p = fb_wstr_SkipChar( src,
len,
*pattern );
len -= fb_wstr_CalcDiff( src, p );
} else if( len_pattern != 0 ) {
p = src;
while (len >= len_pattern ) {
if( fb_wstr_Compare( p, pattern, len_pattern )!=0 )
break;
p += len_pattern;
len -= len_pattern;
}
}
}
if( len >= len_pattern ) {
if( len_pattern==1 ) {
const FB_WCHAR *p_tmp =
fb_wstr_SkipCharRev( p,
len,
*pattern );
len = fb_wstr_CalcDiff( p, p_tmp );
} else if( len_pattern != 0 ) {
ssize_t test_index = len - len_pattern;
while (len >= len_pattern ) {
if( fb_wstr_Compare( p + test_index,
pattern,
len_pattern )!=0 )
break;
test_index -= len_pattern;
}
len = test_index + len_pattern;
}
}
}
if( len > 0 )
{
/* alloc temp string */
dst = fb_wstr_AllocTemp( len );
if( dst != NULL )
{
/* simple copy */
fb_wstr_Copy( dst, p, len );
}
else
dst = NULL;
}
else
dst = NULL;
return dst;
}
FBCALL FB_WCHAR *fb_WstrTrimAny ( const FB_WCHAR *src, const FB_WCHAR *pattern )
{
const FB_WCHAR *pachText = NULL;
FB_WCHAR *dst;
ssize_t len;
if( src == NULL ) {
return NULL;
}
len = 0;
{
ssize_t len_pattern = fb_wstr_Len( pattern );
pachText = src;
len = fb_wstr_Len( src );
while ( len != 0 )
{
ssize_t i;
for( i=0; i!=len_pattern; ++i ) {
if( wcschr( pattern, *pachText )!=NULL ) {
break;
}
}
if( i==len_pattern ) {
break;
}
--len;
++pachText;
}
while ( len != 0 )
{
ssize_t i;
--len;
for( i=0; i!=len_pattern; ++i ) {
if( wcschr( pattern, pachText[len] )!=NULL ) {
break;
}
}
if( i==len_pattern ) {
++len;
break;
}
}
}
if( len > 0 )
{
/* alloc temp string */
dst = fb_wstr_AllocTemp( len );
if( dst != NULL )
{
/* simple copy */
fb_wstr_Copy( dst, pachText, len );
}
else
dst = NULL;
}
else
dst = NULL;
return dst;
}
