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- #include "other.h"
- #include <util/string/util.h>
- #include <util/system/yassert.h>
- /********************************************************/
- /********************************************************/
- static const Tr InvertTr(".:/?#", "\005\004\003\002\001");
- static const Tr RevertTr("\005\004\003\002\001", ".:/?#");
- void TrspChars(char* s) {
- InvertTr.Do(s);
- }
- void UnTrspChars(char* s) {
- RevertTr.Do(s);
- }
- void TrspChars(char* s, size_t l) {
- InvertTr.Do(s, l);
- }
- void UnTrspChars(char* s, size_t l) {
- RevertTr.Do(s, l);
- }
- void TrspChars(const char* s, char* d) {
- InvertTr.Do(s, d);
- }
- void UnTrspChars(const char* s, char* d) {
- RevertTr.Do(s, d);
- }
- void InvertDomain(char* begin, char* end) {
- // skip schema if it is present
- const auto dotPos = TStringBuf{begin, end}.find('.');
- if (dotPos == TStringBuf::npos)
- return; // no need to invert anything
- const auto schemaendPos = TStringBuf{begin, end}.find("://", 3);
- if (schemaendPos < dotPos)
- begin += schemaendPos + 3;
- char* sl = (char*)memchr(begin, '/', end - begin);
- char* cl = (char*)memchr(begin, ':', sl ? sl - begin : end - begin);
- end = cl ? cl : (sl ? sl : end);
- // invert string
- for (size_t i = 0, n = end - begin; i < n / 2; ++i)
- DoSwap(begin[i], begin[n - i - 1]);
- // invert back each host name segment
- char* b = begin;
- while (true) {
- char* e = (char*)memchr(b, '.', end - b);
- if (!e)
- e = end;
- for (size_t i = 0, n = e - b; i < n / 2; ++i)
- DoSwap(b[i], b[n - i - 1]);
- if (e == end)
- break;
- b = e + 1;
- }
- }
- void InvertUrl(char* begin, char* end) {
- char* slash = strchr(begin, '/');
- if (slash) {
- *slash = 0;
- }
- strlwr(begin);
- if (slash) {
- *slash = '/';
- }
- InvertDomain(begin, end);
- TrspChars(begin);
- }
- void RevertUrl(char* begin, char* end) {
- UnTrspChars(begin);
- InvertDomain(begin, end);
- }
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