string.h

ac3的解码程序

  rep = Sprepend(rep, &y, 1); 
}

inline void String::prepend(const SubString& y)
{
  rep = Sprepend(rep, y.chars(), y.length());
}

// misc transformations


inline void String::reverse()
{
  rep = Sreverse(rep, rep);
}


inline void String::upcase()
{
  rep = Supcase(rep, rep);
}


inline void String::downcase()
{
  rep = Sdowncase(rep, rep);
}


inline void String::capitalize()
{
  rep = Scapitalize(rep, rep);
}

// element extraction

inline char&  String::operator [] (int i) 
{ 
  if (((unsigned)i) >= length()) error("invalid index");
  return rep->s[i];
}

inline const char&  String::operator [] (int i) const
{ 
  if (((unsigned)i) >= length()) error("invalid index");
  return rep->s[i];
}

inline char  String::elem (int i) const
{ 
  if (((unsigned)i) >= length()) error("invalid index");
  return rep->s[i];
}

inline char  String::firstchar() const
{ 
  return elem(0);
}

inline char  String::lastchar() const
{ 
  return elem(length() - 1);
}

// searching

inline int String::index(char c, int startpos) const
{
  return search(startpos, length(), c);
}

inline int String::index(const char* t, int startpos) const
{   
  return search(startpos, length(), t);
}

inline int String::index(const String& y, int startpos) const
{   
  return search(startpos, length(), y.chars(), y.length());
}

inline int String::index(const SubString& y, int startpos) const
{   
  return search(startpos, length(), y.chars(), y.length());
}

inline int String::index(const Regex& r, int startpos) const
{
  int unused;  return r.search(chars(), length(), unused, startpos);
}

inline int String::contains(char c) const
{
  return search(0, length(), c) >= 0;
}

inline int String::contains(const char* t) const
{   
  return search(0, length(), t) >= 0;
}

inline int String::contains(const String& y) const
{   
  return search(0, length(), y.chars(), y.length()) >= 0;
}

inline int String::contains(const SubString& y) const
{   
  return search(0, length(), y.chars(), y.length()) >= 0;
}

inline int String::contains(char c, int p) const
{
  return match(p, length(), 0, &c, 1) >= 0;
}

inline int String::contains(const char* t, int p) const
{
  return match(p, length(), 0, t) >= 0;
}

inline int String::contains(const String& y, int p) const
{
  return match(p, length(), 0, y.chars(), y.length()) >= 0;
}

inline int String::contains(const SubString& y, int p) const
{
  return match(p, length(), 0, y.chars(), y.length()) >= 0;
}

inline int String::contains(const Regex& r) const
{
  int unused;  return r.search(chars(), length(), unused, 0) >= 0;
}

inline int String::contains(const Regex& r, int p) const
{
  return r.match(chars(), length(), p) >= 0;
}


inline int String::matches(const SubString& y, int p) const
{
  return match(p, length(), 1, y.chars(), y.length()) >= 0;
}

inline int String::matches(const String& y, int p) const
{
  return match(p, length(), 1, y.chars(), y.length()) >= 0;
}

inline int String::matches(const char* t, int p) const
{
  return match(p, length(), 1, t) >= 0;
}

inline int String::matches(char c, int p) const
{
  return match(p, length(), 1, &c, 1) >= 0;
}

inline int String::matches(const Regex& r, int p) const
{
  int l = (p < 0)? -p : length() - p;
  return r.match(chars(), length(), p) == l;
}


inline int SubString::contains(const char* t) const
{   
  return S.search(pos, pos+len, t) >= 0;
}

inline int SubString::contains(const String& y) const
{   
  return S.search(pos, pos+len, y.chars(), y.length()) >= 0;
}

inline int SubString::contains(const SubString&  y) const
{   
  return S.search(pos, pos+len, y.chars(), y.length()) >= 0;
}

inline int SubString::contains(char c) const
{
  return S.search(pos, pos+len, c) >= 0;
}

inline int SubString::contains(const Regex& r) const
{
  int unused;  return r.search(chars(), len, unused, 0) >= 0;
}

inline int SubString::matches(const Regex& r) const
{
  return r.match(chars(), len, 0) == len;
}


inline int String::gsub(const String& pat, const String& r)
{
  return _gsub(pat.chars(), pat.length(), r.chars(), r.length());
}

inline int String::gsub(const SubString&  pat, const String& r)
{
  return _gsub(pat.chars(), pat.length(), r.chars(), r.length());
}

inline int String::gsub(const Regex& pat, const String& r)
{
  return _gsub(pat, r.chars(), r.length());
}

inline int String::gsub(const char* pat, const String& r)
{
  return _gsub(pat, -1, r.chars(), r.length());
}

inline int String::gsub(const char* pat, const char* r)
{
  return _gsub(pat, -1, r, -1);
}



inline  ostream& operator<<(ostream& s, const String& x)
{
   s << x.chars(); return s;
}

// a zillion comparison operators

inline int operator==(const String& x, const String& y) 
{
  return compare(x, y) == 0; 
}

inline int operator!=(const String& x, const String& y)
{
  return compare(x, y) != 0; 
}

inline int operator>(const String& x, const String& y)
{
  return compare(x, y) > 0; 
}

inline int operator>=(const String& x, const String& y)
{
  return compare(x, y) >= 0; 
}

inline int operator<(const String& x, const String& y)
{
  return compare(x, y) < 0; 
}

inline int operator<=(const String& x, const String& y)
{
  return compare(x, y) <= 0; 
}

inline int operator==(const String& x, const SubString&  y) 
{
  return compare(x, y) == 0; 
}

inline int operator!=(const String& x, const SubString&  y)
{
  return compare(x, y) != 0; 
}

inline int operator>(const String& x, const SubString&  y)      
{
  return compare(x, y) > 0; 
}

inline int operator>=(const String& x, const SubString&  y)
{
  return compare(x, y) >= 0; 
}

inline int operator<(const String& x, const SubString&  y) 
{
  return compare(x, y) < 0; 
}

inline int operator<=(const String& x, const SubString&  y)
{
  return compare(x, y) <= 0; 
}

inline int operator==(const String& x, const char* t) 
{
  return compare(x, t) == 0; 
}

inline int operator!=(const String& x, const char* t) 
{
  return compare(x, t) != 0; 
}

inline int operator>(const String& x, const char* t)  
{
  return compare(x, t) > 0; 
}

inline int operator>=(const String& x, const char* t) 
{
  return compare(x, t) >= 0; 
}

inline int operator<(const String& x, const char* t)  
{
  return compare(x, t) < 0; 
}

inline int operator<=(const String& x, const char* t) 
{
  return compare(x, t) <= 0; 
}

inline int operator==(const SubString& x, const String& y) 
{
  return compare(y, x) == 0; 
}

inline int operator!=(const SubString& x, const String& y)
{
  return compare(y, x) != 0;
}

inline int operator>(const SubString& x, const String& y)      
{
  return compare(y, x) < 0;
}

inline int operator>=(const SubString& x, const String& y)     
{
  return compare(y, x) <= 0;
}

inline int operator<(const SubString& x, const String& y)      
{
  return compare(y, x) > 0;
}

inline int operator<=(const SubString& x, const String& y)     
{
  return compare(y, x) >= 0;
}

inline int operator==(const SubString& x, const SubString&  y) 
{
  return compare(x, y) == 0; 
}

inline int operator!=(const SubString& x, const SubString&  y)
{
  return compare(x, y) != 0;
}

inline int operator>(const SubString& x, const SubString&  y)      
{
  return compare(x, y) > 0;
}

inline int operator>=(const SubString& x, const SubString&  y)
{
  return compare(x, y) >= 0;
}

inline int operator<(const SubString& x, const SubString&  y) 
{
  return compare(x, y) < 0;
}

inline int operator<=(const SubString& x, const SubString&  y)
{
  return compare(x, y) <= 0;
}

inline int operator==(const SubString& x, const char* t) 
{
  return compare(x, t) == 0; 
}

inline int operator!=(const SubString& x, const char* t) 
{
  return compare(x, t) != 0;
}

inline int operator>(const SubString& x, const char* t)  
{
  return compare(x, t) > 0; 
}

inline int operator>=(const SubString& x, const char* t) 
{
  return compare(x, t) >= 0; 
}

inline int operator<(const SubString& x, const char* t)  
{
  return compare(x, t) < 0; 
}

inline int operator<=(const SubString& x, const char* t) 
{
  return compare(x, t) <= 0; 
}


// a helper needed by at, before, etc.

inline SubString String::_substr(int first, int l)
{
  if (first < 0 || (unsigned)(first + l) > length() )
    return SubString(_nilString, 0, 0) ;
  else 
    return SubString(*this, first, l);
}

#endif