String.h
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上传日期:2007-01-06
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- // This may look like C code, but it is really -*- C++ -*-
- /*
- Copyright (C) 1988 Free Software Foundation
- written by Doug Lea (dl@rocky.oswego.edu)
- This file is part of the GNU C++ Library. This library is free
- software; you can redistribute it and/or modify it under the terms of
- the GNU Library General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your
- option) any later version. This library is distributed in the hope
- that it will be useful, but WITHOUT ANY WARRANTY; without even the
- implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- PURPOSE. See the GNU Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #ifndef _String_h
- #ifdef __GNUG__
- #pragma interface
- #endif
- #define _String_h 1
- #include <iostream.h>
- #include <Regex.h>
- struct StrRep // internal String representations
- {
- unsigned short len; // string length
- unsigned short sz; // allocated space
- char s[1]; // the string starts here
- // (at least 1 char for trailing null)
- // allocated & expanded via non-public fcts
- };
- // primitive ops on StrReps -- nearly all String fns go through these.
- StrRep* Salloc(StrRep*, const char*, int, int);
- StrRep* Scopy(StrRep*, const StrRep*);
- StrRep* Scat(StrRep*, const char*, int, const char*, int);
- StrRep* Scat(StrRep*, const char*, int,const char*,int, const char*,int);
- StrRep* Sprepend(StrRep*, const char*, int);
- StrRep* Sreverse(const StrRep*, StrRep*);
- StrRep* Supcase(const StrRep*, StrRep*);
- StrRep* Sdowncase(const StrRep*, StrRep*);
- StrRep* Scapitalize(const StrRep*, StrRep*);
- // These classes need to be defined in the order given
- class String;
- class SubString;
- class SubString
- {
- friend class String;
- protected:
- String& S; // The String I'm a substring of
- unsigned short pos; // starting position in S's rep
- unsigned short len; // length of substring
- void assign(const StrRep*, const char*, int = -1);
- SubString(String& x, int p, int l);
- SubString(const SubString& x);
- public:
- // Note there are no public constructors. SubStrings are always
- // created via String operations
- ~SubString();
- SubString& operator = (const String& y);
- SubString& operator = (const SubString& y);
- SubString& operator = (const char* t);
- SubString& operator = (char c);
- // return 1 if target appears anywhere in SubString; else 0
- int contains(char c) const;
- int contains(const String& y) const;
- int contains(const SubString& y) const;
- int contains(const char* t) const;
- int contains(const Regex& r) const;
- // return 1 if target matches entire SubString
- int matches(const Regex& r) const;
- // IO
- friend ostream& operator<<(ostream& s, const SubString& x);
- // status
- unsigned int length() const;
- int empty() const;
- const char* chars() const;
- int OK() const;
- };
- class String
- {
- friend class SubString;
- protected:
- StrRep* rep; // Strings are pointers to their representations
- // some helper functions
- int search(int, int, const char*, int = -1) const;
- int search(int, int, char) const;
- int match(int, int, int, const char*, int = -1) const;
- int _gsub(const char*, int, const char* ,int);
- int _gsub(const Regex&, const char*, int);
- SubString _substr(int, int);
- public:
- // constructors & assignment
- String();
- String(const String& x);
- String(const SubString& x);
- String(const char* t);
- String(const char* t, int len);
- String(char c);
- ~String();
- String& operator = (const String& y);
- String& operator = (const char* y);
- String& operator = (char c);
- String& operator = (const SubString& y);
- // concatenation
- String& operator += (const String& y);
- String& operator += (const SubString& y);
- String& operator += (const char* t);
- String& operator += (char c);
- void prepend(const String& y);
- void prepend(const SubString& y);
- void prepend(const char* t);
- void prepend(char c);
- // procedural versions:
- // concatenate first 2 args, store result in last arg
- friend inline void cat(const String&, const String&, String&);
- friend inline void cat(const String&, const SubString&, String&);
- friend inline void cat(const String&, const char*, String&);
- friend inline void cat(const String&, char, String&);
- friend inline void cat(const SubString&, const String&, String&);
- friend inline void cat(const SubString&, const SubString&, String&);
- friend inline void cat(const SubString&, const char*, String&);
- friend inline void cat(const SubString&, char, String&);
- friend inline void cat(const char*, const String&, String&);
- friend inline void cat(const char*, const SubString&, String&);
- friend inline void cat(const char*, const char*, String&);
- friend inline void cat(const char*, char, String&);
- // double concatenation, by request. (yes, there are too many versions,
- // but if one is supported, then the others should be too...)
- // Concatenate first 3 args, store in last arg
- friend inline void cat(const String&,const String&, const String&,String&);
- friend inline void cat(const String&,const String&,const SubString&,String&);
- friend inline void cat(const String&,const String&, const char*, String&);
- friend inline void cat(const String&,const String&, char, String&);
- friend inline void cat(const String&,const SubString&,const String&,String&);
- inline friend void cat(const String&,const SubString&,const SubString&,String&);
- friend inline void cat(const String&,const SubString&, const char*, String&);
- friend inline void cat(const String&,const SubString&, char, String&);
- friend inline void cat(const String&,const char*, const String&, String&);
- friend inline void cat(const String&,const char*, const SubString&, String&);
- friend inline void cat(const String&,const char*, const char*, String&);
- friend inline void cat(const String&,const char*, char, String&);
- friend inline void cat(const char*, const String&, const String&,String&);
- friend inline void cat(const char*,const String&,const SubString&,String&);
- friend inline void cat(const char*,const String&, const char*, String&);
- friend inline void cat(const char*,const String&, char, String&);
- friend inline void cat(const char*,const SubString&,const String&,String&);
- friend inline void cat(const char*,const SubString&,const SubString&,String&);
- friend inline void cat(const char*,const SubString&, const char*, String&);
- friend inline void cat(const char*,const SubString&, char, String&);
- friend inline void cat(const char*,const char*, const String&, String&);
- friend inline void cat(const char*,const char*, const SubString&, String&);
- friend inline void cat(const char*,const char*, const char*, String&);
- friend inline void cat(const char*,const char*, char, String&);
- // searching & matching
- // return position of target in string or -1 for failure
- int index(char c, int startpos = 0) const;
- int index(const String& y, int startpos = 0) const;
- int index(const SubString& y, int startpos = 0) const;
- int index(const char* t, int startpos = 0) const;
- int index(const Regex& r, int startpos = 0) const;
- // return 1 if target appears anyhere in String; else 0
- int contains(char c) const;
- int contains(const String& y) const;
- int contains(const SubString& y) const;
- int contains(const char* t) const;
- int contains(const Regex& r) const;
- // return 1 if target appears anywhere after position pos
- // (or before, if pos is negative) in String; else 0
- int contains(char c, int pos) const;
- int contains(const String& y, int pos) const;
- int contains(const SubString& y, int pos) const;
- int contains(const char* t, int pos) const;
- int contains(const Regex& r, int pos) const;
- // return 1 if target appears at position pos in String; else 0
- int matches(char c, int pos = 0) const;
- int matches(const String& y, int pos = 0) const;
- int matches(const SubString& y, int pos = 0) const;
- int matches(const char* t, int pos = 0) const;
- int matches(const Regex& r, int pos = 0) const;
- // return number of occurences of target in String
- int freq(char c) const;
- int freq(const String& y) const;
- int freq(const SubString& y) const;
- int freq(const char* t) const;
- // SubString extraction
- // Note that you can't take a substring of a const String, since
- // this leaves open the possiblility of indirectly modifying the
- // String through the SubString
- SubString at(int pos, int len);
- SubString operator () (int pos, int len); // synonym for at
- SubString at(const String& x, int startpos = 0);
- SubString at(const SubString& x, int startpos = 0);
- SubString at(const char* t, int startpos = 0);
- SubString at(char c, int startpos = 0);
- SubString at(const Regex& r, int startpos = 0);
- SubString before(int pos);
- SubString before(const String& x, int startpos = 0);
- SubString before(const SubString& x, int startpos = 0);
- SubString before(const char* t, int startpos = 0);
- SubString before(char c, int startpos = 0);
- SubString before(const Regex& r, int startpos = 0);
- SubString through(int pos);
- SubString through(const String& x, int startpos = 0);
- SubString through(const SubString& x, int startpos = 0);
- SubString through(const char* t, int startpos = 0);
- SubString through(char c, int startpos = 0);
- SubString through(const Regex& r, int startpos = 0);
- SubString from(int pos);
- SubString from(const String& x, int startpos = 0);
- SubString from(const SubString& x, int startpos = 0);
- SubString from(const char* t, int startpos = 0);
- SubString from(char c, int startpos = 0);
- SubString from(const Regex& r, int startpos = 0);
- SubString after(int pos);
- SubString after(const String& x, int startpos = 0);
- SubString after(const SubString& x, int startpos = 0);
- SubString after(const char* t, int startpos = 0);
- SubString after(char c, int startpos = 0);
- SubString after(const Regex& r, int startpos = 0);
- // deletion
- // delete len chars starting at pos
- void del(int pos, int len);
- // delete the first occurrence of target after startpos
- void del(const String& y, int startpos = 0);
- void del(const SubString& y, int startpos = 0);
- void del(const char* t, int startpos = 0);
- void del(char c, int startpos = 0);
- void del(const Regex& r, int startpos = 0);
- // global substitution: substitute all occurrences of pat with repl
- int gsub(const String& pat, const String& repl);
- int gsub(const SubString& pat, const String& repl);
- int gsub(const char* pat, const String& repl);
- int gsub(const char* pat, const char* repl);
- int gsub(const Regex& pat, const String& repl);
- // friends & utilities
- // split string into array res at separators; return number of elements
- friend int split(const String& x, String res[], int maxn,
- const String& sep);
- friend int split(const String& x, String res[], int maxn,
- const Regex& sep);
- friend String common_prefix(const String& x, const String& y,
- int startpos = 0);
- friend String common_suffix(const String& x, const String& y,
- int startpos = -1);
- friend String replicate(char c, int n);
- friend String replicate(const String& y, int n);
- friend String join(String src[], int n, const String& sep);
- // simple builtin transformations
- friend inline String reverse(const String& x);
- friend inline String upcase(const String& x);
- friend inline String downcase(const String& x);
- friend inline String capitalize(const String& x);
- // in-place versions of above
- void reverse();
- void upcase();
- void downcase();
- void capitalize();
- // element extraction
- char& operator [] (int i);
- const char& operator [] (int i) const;
- char elem(int i) const;
- char firstchar() const;
- char lastchar() const;
- // conversion
- operator const char*() const;
- const char* chars() const;
- // IO
- friend inline ostream& operator<<(ostream& s, const String& x);
- friend ostream& operator<<(ostream& s, const SubString& x);
- friend istream& operator>>(istream& s, String& x);
- friend int readline(istream& s, String& x,
- char terminator = 'n',
- int discard_terminator = 1);
- // status
- unsigned int length() const;
- int empty() const;
- // preallocate some space for String
- void alloc(int newsize);
- // report current allocation (not length!)
- int allocation() const;
- void error(const char* msg) const;
- int OK() const;
- };
- typedef String StrTmp; // for backward compatibility
- // other externs
- int compare(const String& x, const String& y);
- int compare(const String& x, const SubString& y);
- int compare(const String& x, const char* y);
- int compare(const SubString& x, const String& y);
- int compare(const SubString& x, const SubString& y);
- int compare(const SubString& x, const char* y);
- int fcompare(const String& x, const String& y); // ignore case
- extern StrRep _nilStrRep;
- extern String _nilString;
- // status reports, needed before defining other things
- inline unsigned int String::length() const { return rep->len; }
- inline int String::empty() const { return rep->len == 0; }
- inline const char* String::chars() const { return &(rep->s[0]); }
- inline int String::allocation() const { return rep->sz; }
- inline unsigned int SubString::length() const { return len; }
- inline int SubString::empty() const { return len == 0; }
- inline const char* SubString::chars() const { return &(S.rep->s[pos]); }
- // constructors
- inline String::String()
- : rep(&_nilStrRep) {}
- inline String::String(const String& x)
- : rep(Scopy(0, x.rep)) {}
- inline String::String(const char* t)
- : rep(Salloc(0, t, -1, -1)) {}
- inline String::String(const char* t, int tlen)
- : rep(Salloc(0, t, tlen, tlen)) {}
- inline String::String(const SubString& y)
- : rep(Salloc(0, y.chars(), y.length(), y.length())) {}
- inline String::String(char c)
- : rep(Salloc(0, &c, 1, 1)) {}
- inline String::~String() { if (rep != &_nilStrRep) delete rep; }
- inline SubString::SubString(const SubString& x)
- :S(x.S), pos(x.pos), len(x.len) {}
- inline SubString::SubString(String& x, int first, int l)
- :S(x), pos(first), len(l) {}
- inline SubString::~SubString() {}
- // assignment
- inline String& String::operator = (const String& y)
- {
- rep = Scopy(rep, y.rep);
- return *this;
- }
- inline String& String::operator=(const char* t)
- {
- rep = Salloc(rep, t, -1, -1);
- return *this;
- }
- inline String& String::operator=(const SubString& y)
- {
- rep = Salloc(rep, y.chars(), y.length(), y.length());
- return *this;
- }
- inline String& String::operator=(char c)
- {
- rep = Salloc(rep, &c, 1, 1);
- return *this;
- }
- inline SubString& SubString::operator = (const char* ys)
- {
- assign(0, ys);
- return *this;
- }
- inline SubString& SubString::operator = (char ch)
- {
- assign(0, &ch, 1);
- return *this;
- }
- inline SubString& SubString::operator = (const String& y)
- {
- assign(y.rep, y.chars(), y.length());
- return *this;
- }
- inline SubString& SubString::operator = (const SubString& y)
- {
- assign(y.S.rep, y.chars(), y.length());
- return *this;
- }
- // Zillions of cats...
- inline void cat(const String& x, const String& y, String& r)
- {
- r.rep = Scat(r.rep, x.chars(), x.length(), y.chars(), y.length());
- }
- inline void cat(const String& x, const SubString& y, String& r)
- {
- r.rep = Scat(r.rep, x.chars(), x.length(), y.chars(), y.length());
- }
- inline void cat(const String& x, const char* y, String& r)
- {
- r.rep = Scat(r.rep, x.chars(), x.length(), y, -1);
- }
- inline void cat(const String& x, char y, String& r)
- {
- r.rep = Scat(r.rep, x.chars(), x.length(), &y, 1);
- }
- inline void cat(const SubString& x, const String& y, String& r)
- {
- r.rep = Scat(r.rep, x.chars(), x.length(), y.chars(), y.length());
- }
- inline void cat(const SubString& x, const SubString& y, String& r)
- {
- r.rep = Scat(r.rep, x.chars(), x.length(), y.chars(), y.length());
- }
- inline void cat(const SubString& x, const char* y, String& r)
- {
- r.rep = Scat(r.rep, x.chars(), x.length(), y, -1);
- }
- inline void cat(const SubString& x, char y, String& r)
- {
- r.rep = Scat(r.rep, x.chars(), x.length(), &y, 1);
- }
- inline void cat(const char* x, const String& y, String& r)
- {
- r.rep = Scat(r.rep, x, -1, y.chars(), y.length());
- }
- inline void cat(const char* x, const SubString& y, String& r)
- {
- r.rep = Scat(r.rep, x, -1, y.chars(), y.length());
- }
- inline void cat(const char* x, const char* y, String& r)
- {
- r.rep = Scat(r.rep, x, -1, y, -1);
- }
- inline void cat(const char* x, char y, String& r)
- {
- r.rep = Scat(r.rep, x, -1, &y, 1);
- }
- inline void cat(const String& a, const String& x, const String& y, String& r)
- {
- r.rep = Scat(r.rep, a.chars(), a.length(), x.chars(), x.length(), y.chars(), y.length());
- }
- inline void cat(const String& a, const String& x, const SubString& y, String& r)
- {
- r.rep = Scat(r.rep, a.chars(), a.length(), x.chars(), x.length(), y.chars(), y.length());
- }
- inline void cat(const String& a, const String& x, const char* y, String& r)
- {
- r.rep = Scat(r.rep, a.chars(), a.length(), x.chars(), x.length(), y, -1);
- }
- inline void cat(const String& a, const String& x, char y, String& r)
- {
- r.rep = Scat(r.rep, a.chars(), a.length(), x.chars(), x.length(), &y, 1);
- }
- inline void cat(const String& a, const SubString& x, const String& y, String& r)
- {
- r.rep = Scat(r.rep, a.chars(), a.length(), x.chars(), x.length(), y.chars(), y.length());
- }
- inline void cat(const String& a, const SubString& x, const SubString& y, String& r)
- {
- r.rep = Scat(r.rep, a.chars(), a.length(), x.chars(), x.length(), y.chars(), y.length());
- }
- inline void cat(const String& a, const SubString& x, const char* y, String& r)
- {
- r.rep = Scat(r.rep, a.chars(), a.length(), x.chars(), x.length(), y, -1);
- }
- inline void cat(const String& a, const SubString& x, char y, String& r)
- {
- r.rep = Scat(r.rep, a.chars(), a.length(), x.chars(), x.length(), &y, 1);
- }
- inline void cat(const String& a, const char* x, const String& y, String& r)
- {
- r.rep = Scat(r.rep, a.chars(), a.length(), x, -1, y.chars(), y.length());
- }
- inline void cat(const String& a, const char* x, const SubString& y, String& r)
- {
- r.rep = Scat(r.rep, a.chars(), a.length(), x, -1, y.chars(), y.length());
- }
- inline void cat(const String& a, const char* x, const char* y, String& r)
- {
- r.rep = Scat(r.rep, a.chars(), a.length(), x, -1, y, -1);
- }
- inline void cat(const String& a, const char* x, char y, String& r)
- {
- r.rep = Scat(r.rep, a.chars(), a.length(), x, -1, &y, 1);
- }
- inline void cat(const char* a, const String& x, const String& y, String& r)
- {
- r.rep = Scat(r.rep, a, -1, x.chars(), x.length(), y.chars(), y.length());
- }
- inline void cat(const char* a, const String& x, const SubString& y, String& r)
- {
- r.rep = Scat(r.rep, a, -1, x.chars(), x.length(), y.chars(), y.length());
- }
- inline void cat(const char* a, const String& x, const char* y, String& r)
- {
- r.rep = Scat(r.rep, a, -1, x.chars(), x.length(), y, -1);
- }
- inline void cat(const char* a, const String& x, char y, String& r)
- {
- r.rep = Scat(r.rep, a, -1, x.chars(), x.length(), &y, 1);
- }
- inline void cat(const char* a, const SubString& x, const String& y, String& r)
- {
- r.rep = Scat(r.rep, a, -1, x.chars(), x.length(), y.chars(), y.length());
- }
- inline void cat(const char* a, const SubString& x, const SubString& y, String& r)
- {
- r.rep = Scat(r.rep, a, -1, x.chars(), x.length(), y.chars(), y.length());
- }
- inline void cat(const char* a, const SubString& x, const char* y, String& r)
- {
- r.rep = Scat(r.rep, a, -1, x.chars(), x.length(), y, -1);
- }
- inline void cat(const char* a, const SubString& x, char y, String& r)
- {
- r.rep = Scat(r.rep, a, -1, x.chars(), x.length(), &y, 1);
- }
- inline void cat(const char* a, const char* x, const String& y, String& r)
- {
- r.rep = Scat(r.rep, a, -1, x, -1, y.chars(), y.length());
- }
- inline void cat(const char* a, const char* x, const SubString& y, String& r)
- {
- r.rep = Scat(r.rep, a, -1, x, -1, y.chars(), y.length());
- }
- inline void cat(const char* a, const char* x, const char* y, String& r)
- {
- r.rep = Scat(r.rep, a, -1, x, -1, y, -1);
- }
- inline void cat(const char* a, const char* x, char y, String& r)
- {
- r.rep = Scat(r.rep, a, -1, x, -1, &y, 1);
- }
- // operator versions
- inline String& String::operator +=(const String& y)
- {
- cat(*this, y, *this);
- return *this;
- }
- inline String& String::operator +=(const SubString& y)
- {
- cat(*this, y, *this);
- return *this;
- }
- inline String& String::operator += (const char* y)
- {
- cat(*this, y, *this);
- return *this;
- }
- inline String& String:: operator +=(char y)
- {
- cat(*this, y, *this);
- return *this;
- }
- // constructive concatenation
- #if defined(__GNUG__) && !defined(_G_NO_NRV)
- inline String operator + (const String& x, const String& y) return r;
- {
- cat(x, y, r);
- }
- inline String operator + (const String& x, const SubString& y) return r;
- {
- cat(x, y, r);
- }
- inline String operator + (const String& x, const char* y) return r;
- {
- cat(x, y, r);
- }
- inline String operator + (const String& x, char y) return r;
- {
- cat(x, y, r);
- }
- inline String operator + (const SubString& x, const String& y) return r;
- {
- cat(x, y, r);
- }
- inline String operator + (const SubString& x, const SubString& y) return r;
- {
- cat(x, y, r);
- }
- inline String operator + (const SubString& x, const char* y) return r;
- {
- cat(x, y, r);
- }
- inline String operator + (const SubString& x, char y) return r;
- {
- cat(x, y, r);
- }
- inline String operator + (const char* x, const String& y) return r;
- {
- cat(x, y, r);
- }
- inline String operator + (const char* x, const SubString& y) return r;
- {
- cat(x, y, r);
- }
- inline String reverse(const String& x) return r;
- {
- r.rep = Sreverse(x.rep, r.rep);
- }
- inline String upcase(const String& x) return r;
- {
- r.rep = Supcase(x.rep, r.rep);
- }
- inline String downcase(const String& x) return r;
- {
- r.rep = Sdowncase(x.rep, r.rep);
- }
- inline String capitalize(const String& x) return r;
- {
- r.rep = Scapitalize(x.rep, r.rep);
- }
- #else /* NO_NRV */
- inline String operator + (const String& x, const String& y)
- {
- String r; cat(x, y, r); return r;
- }
- inline String operator + (const String& x, const SubString& y)
- {
- String r; cat(x, y, r); return r;
- }
- inline String operator + (const String& x, const char* y)
- {
- String r; cat(x, y, r); return r;
- }
- inline String operator + (const String& x, char y)
- {
- String r; cat(x, y, r); return r;
- }
- inline String operator + (const SubString& x, const String& y)
- {
- String r; cat(x, y, r); return r;
- }
- inline String operator + (const SubString& x, const SubString& y)
- {
- String r; cat(x, y, r); return r;
- }
- inline String operator + (const SubString& x, const char* y)
- {
- String r; cat(x, y, r); return r;
- }
- inline String operator + (const SubString& x, char y)
- {
- String r; cat(x, y, r); return r;
- }
- inline String operator + (const char* x, const String& y)
- {
- String r; cat(x, y, r); return r;
- }
- inline String operator + (const char* x, const SubString& y)
- {
- String r; cat(x, y, r); return r;
- }
- inline String reverse(const String& x)
- {
- String r; r.rep = Sreverse(x.rep, r.rep); return r;
- }
- inline String upcase(const String& x)
- {
- String r; r.rep = Supcase(x.rep, r.rep); return r;
- }
- inline String downcase(const String& x)
- {
- String r; r.rep = Sdowncase(x.rep, r.rep); return r;
- }
- inline String capitalize(const String& x)
- {
- String r; r.rep = Scapitalize(x.rep, r.rep); return r;
- }
- #endif
- // prepend
- inline void String::prepend(const String& y)
- {
- rep = Sprepend(rep, y.chars(), y.length());
- }
- inline void String::prepend(const char* y)
- {
- rep = Sprepend(rep, y, -1);
- }
- inline void String::prepend(char y)
- {
- 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