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#include "split_iterator.h"
#include <util/system/yassert.h>
#include <cctype>
#include <cstring>
#include <cstdlib>
/****************** TSplitDelimiters2 ******************/
TSplitDelimiters::TSplitDelimiters(const char* s) {
memset(Delims, 0, sizeof(Delims));
while (*s)
Delims[(ui8) * (s++)] = true;
}
/****************** TSplitBase ******************/
TSplitBase::TSplitBase(const char* str, size_t length)
: Str(str)
, Len(length)
{
}
TSplitBase::TSplitBase(const TString& s)
: Str(s.data())
, Len(s.size())
{
}
/****************** TDelimitersSplit ******************/
TDelimitersSplit::TDelimitersSplit(const char* str, size_t length, const TSplitDelimiters& delimiters)
: TSplitBase(str, length)
, Delimiters(delimiters)
{
}
TDelimitersSplit::TDelimitersSplit(const TString& s, const TSplitDelimiters& delimiters)
: TSplitBase(s)
, Delimiters(delimiters)
{
}
size_t TDelimitersSplit::Begin() const {
size_t pos = 0;
while ((pos < Len) && Delimiters.IsDelimiter(Str[pos]))
++pos;
return pos;
}
TSizeTRegion TDelimitersSplit::Next(size_t& pos) const {
size_t begin = pos;
while ((pos < Len) && !Delimiters.IsDelimiter(Str[pos]))
++pos;
TSizeTRegion result(begin, pos);
while ((pos < Len) && Delimiters.IsDelimiter(Str[pos]))
++pos;
return result;
}
TDelimitersSplit::TIterator TDelimitersSplit::Iterator() const {
return TIterator(*this);
}
/****************** TDelimitersStrictSplit ******************/
TDelimitersStrictSplit::TDelimitersStrictSplit(const char* str, size_t length, const TSplitDelimiters& delimiters)
: TSplitBase(str, length)
, Delimiters(delimiters)
{
}
TDelimitersStrictSplit::TDelimitersStrictSplit(const TString& s, const TSplitDelimiters& delimiters)
: TSplitBase(s)
, Delimiters(delimiters)
{
}
TDelimitersStrictSplit::TIterator TDelimitersStrictSplit::Iterator() const {
return TIterator(*this);
}
TSizeTRegion TDelimitersStrictSplit::Next(size_t& pos) const {
size_t begin = pos;
while ((pos < Len) && !Delimiters.IsDelimiter(Str[pos]))
++pos;
TSizeTRegion result(begin, pos);
if (pos < Len)
++pos;
return result;
}
size_t TDelimitersStrictSplit::Begin() const {
return 0;
}
/****************** TScreenedDelimitersSplit ******************/
TScreenedDelimitersSplit::TScreenedDelimitersSplit(const TString& s, const TSplitDelimiters& delimiters, const TSplitDelimiters& screens)
: TSplitBase(s)
, Delimiters(delimiters)
, Screens(screens)
{
}
TScreenedDelimitersSplit::TScreenedDelimitersSplit(const char* str, size_t length, const TSplitDelimiters& delimiters, const TSplitDelimiters& screens)
: TSplitBase(str, length)
, Delimiters(delimiters)
, Screens(screens)
{
}
TScreenedDelimitersSplit::TIterator TScreenedDelimitersSplit::Iterator() const {
return TIterator(*this);
}
TSizeTRegion TScreenedDelimitersSplit::Next(size_t& pos) const {
size_t begin = pos;
bool screened = false;
while (pos < Len) {
if (Screens.IsDelimiter(Str[pos]))
screened = !screened;
if (Delimiters.IsDelimiter(Str[pos]) && !screened)
break;
++pos;
}
TSizeTRegion result(begin, pos);
if (pos < Len)
++pos;
return result;
}
size_t TScreenedDelimitersSplit::Begin() const {
return 0;
}
/****************** TDelimitersSplitWithoutTags ******************/
TDelimitersSplitWithoutTags::TDelimitersSplitWithoutTags(const char* str, size_t length, const TSplitDelimiters& delimiters)
: TSplitBase(str, length)
, Delimiters(delimiters)
{
}
TDelimitersSplitWithoutTags::TDelimitersSplitWithoutTags(const TString& s, const TSplitDelimiters& delimiters)
: TSplitBase(s)
, Delimiters(delimiters)
{
}
size_t TDelimitersSplitWithoutTags::SkipTag(size_t pos) const {
Y_ASSERT('<' == Str[pos]);
while ((pos < Len) && ('>' != Str[pos]))
++pos;
return pos + 1;
}
size_t TDelimitersSplitWithoutTags::SkipDelimiters(size_t pos) const {
while (true) {
while ((pos < Len) && Delimiters.IsDelimiter(Str[pos]) && ('<' != Str[pos]))
++pos;
if (pos < Len) {
if ('<' != Str[pos])
break;
else
pos = SkipTag(pos);
} else
break;
}
return pos;
}
size_t TDelimitersSplitWithoutTags::Begin() const {
size_t pos = 0;
pos = SkipDelimiters(pos);
return pos;
}
TSizeTRegion TDelimitersSplitWithoutTags::Next(size_t& pos) const {
size_t begin = pos;
while ((pos < Len) && !Delimiters.IsDelimiter(Str[pos]) && ('<' != Str[pos]))
++pos;
TSizeTRegion result(begin, pos);
pos = SkipDelimiters(pos);
return result;
}
TDelimitersSplitWithoutTags::TIterator TDelimitersSplitWithoutTags::Iterator() const {
return TIterator(*this);
}
/****************** TCharSplit ******************/
TCharSplit::TCharSplit(const char* str, size_t length)
: TSplitBase(str, length)
{
}
TCharSplit::TCharSplit(const TString& s)
: TSplitBase(s)
{
}
TCharSplit::TIterator TCharSplit::Iterator() const {
return TIterator(*this);
}
TSizeTRegion TCharSplit::Next(size_t& pos) const {
TSizeTRegion result(pos, pos + 1);
++pos;
return result;
}
size_t TCharSplit::Begin() const {
return 0;
}
/****************** TCharSplitWithoutTags ******************/
TCharSplitWithoutTags::TCharSplitWithoutTags(const char* str, size_t length)
: TSplitBase(str, length)
{
}
TCharSplitWithoutTags::TCharSplitWithoutTags(const TString& s)
: TSplitBase(s)
{
}
size_t TCharSplitWithoutTags::SkipTag(size_t pos) const {
Y_ASSERT('<' == Str[pos]);
while ((pos < Len) && ('>' != Str[pos]))
++pos;
return pos + 1;
}
size_t TCharSplitWithoutTags::SkipDelimiters(size_t pos) const {
while (true) {
if (pos < Len) {
if ('<' != Str[pos])
break;
else
pos = SkipTag(pos);
} else
break;
}
return pos;
}
size_t TCharSplitWithoutTags::Begin() const {
size_t pos = 0;
pos = SkipDelimiters(pos);
return pos;
}
TSizeTRegion TCharSplitWithoutTags::Next(size_t& pos) const {
size_t begin = pos++;
TSizeTRegion result(begin, pos);
pos = SkipDelimiters(pos);
return result;
}
TCharSplitWithoutTags::TIterator TCharSplitWithoutTags::Iterator() const {
return TIterator(*this);
}
TSubstringSplitDelimiter::TSubstringSplitDelimiter(const TString& s)
: Matcher(s)
, Len(s.size())
{
}
/****************** TSubstringSplit ******************/
TSubstringSplit::TSubstringSplit(const char* str, size_t length, const TSubstringSplitDelimiter& delimiter)
: TSplitBase(str, length)
, Delimiter(delimiter)
{
}
TSubstringSplit::TSubstringSplit(const TString& str, const TSubstringSplitDelimiter& delimiter)
: TSplitBase(str)
, Delimiter(delimiter)
{
}
TSubstringSplit::TIterator TSubstringSplit::Iterator() const {
return TIterator(*this);
}
TSizeTRegion TSubstringSplit::Next(size_t& pos) const {
const char* begin = Str + pos;
const char* end = Str + Len;
const char* delim;
if (Delimiter.Matcher.SubStr(begin, end, delim)) {
TSizeTRegion result(pos, delim - begin + pos);
pos += delim - begin + Delimiter.Len;
return result;
} else {
TSizeTRegion result(pos, end - begin + pos);
pos += end - begin;
return result;
}
}
size_t TSubstringSplit::Begin() const {
return 0;
}
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