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00018 #include "pqxx/compiler-public.hxx"
00019
00020 #include <cstdio>
00021 #include <cctype>
00022 #include <sstream>
00023 #include <stdexcept>
00024 #include <string>
00025 #include <typeinfo>
00026 #include <vector>
00027
00065
00066 namespace pqxx {}
00067
00069
00074 namespace PGSTD {}
00075
00076 #include <pqxx/libpq-forward.hxx>
00077
00078
00079 namespace pqxx
00080 {
00082 const oid oid_none = 0;
00083
00106
00108
00121 template<typename T> void error_unsupported_type_in_string_conversion(T);
00122
00123
00125
00131 template<typename T> PGSTD::string error_ambiguous_string_conversion(T);
00132
00133
00134
00135
00136
00138
00150 template<typename T> void from_string(const char Str[], T &Obj);
00151
00153
00159 template<typename T> void from_string(const char Str[], T &Obj, size_t)
00160 {
00161 return from_string(Str, Obj);
00162 }
00163
00164 template<> void PQXX_LIBEXPORT from_string(const char Str[],
00165 PGSTD::string &,
00166 size_t);
00167
00168 template<> void PQXX_LIBEXPORT from_string(const char Str[], long &);
00169 template<>
00170 void PQXX_LIBEXPORT from_string(const char Str[], unsigned long &);
00171 template<> void PQXX_LIBEXPORT from_string(const char Str[], int &);
00172 template<>
00173 void PQXX_LIBEXPORT from_string(const char Str[], unsigned int &);
00174 template<> void PQXX_LIBEXPORT from_string(const char Str[], short &);
00175 template<>
00176 void PQXX_LIBEXPORT from_string(const char Str[], unsigned short &);
00177 template<> void PQXX_LIBEXPORT from_string(const char Str[], float &);
00178 template<> void PQXX_LIBEXPORT from_string(const char Str[], double &);
00179 template<> void PQXX_LIBEXPORT from_string(const char Str[], bool &);
00180 #if defined(PQXX_HAVE_LONG_DOUBLE)
00181 template<>
00182 void PQXX_LIBEXPORT from_string(const char Str[], long double &);
00183 #endif
00184
00185
00186 template<> inline void from_string(const char Str[],PGSTD::string &Obj)
00187 { Obj = Str; }
00188
00189 template<>
00190 inline void from_string(const char Str[], PGSTD::stringstream &Obj)
00191 { Obj.clear(); Obj << Str; }
00192
00193 template<typename T>
00194 inline void from_string(const PGSTD::string &Str, T &Obj)
00195 { from_string(Str.c_str(), Obj); }
00196
00197 template<typename T>
00198 inline void from_string(const PGSTD::stringstream &Str, T &Obj)
00199 { from_string(Str.str(), Obj); }
00200
00201 template<> inline void
00202 from_string(const PGSTD::string &Str, PGSTD::string &Obj)
00203 { Obj = Str; }
00204
00205 template<> inline void
00206 from_string(const char [], char &Obj)
00207 { error_ambiguous_string_conversion(Obj); }
00208 template<> inline void
00209 from_string(const char [], signed char &Obj)
00210 { error_ambiguous_string_conversion(Obj); }
00211 template<> inline void
00212 from_string(const char [], unsigned char &Obj)
00213 { error_ambiguous_string_conversion(Obj); }
00214
00215 template<> inline void
00216 from_string(const PGSTD::string &, char &Obj)
00217 { error_ambiguous_string_conversion(Obj); }
00218 template<> inline void
00219 from_string(const PGSTD::string &, signed char &Obj)
00220 { error_ambiguous_string_conversion(Obj); }
00221 template<> inline void
00222 from_string(const PGSTD::string &, unsigned char &Obj)
00223 { error_ambiguous_string_conversion(Obj); }
00224
00225
00226 namespace internal
00227 {
00229 inline int digit_to_number(char c) throw () { return c-'0'; }
00230 inline char number_to_digit(int i) throw () { return static_cast<char>(i)+'0'; }
00231 }
00232
00233
00235
00239 template<typename T> PGSTD::string to_string(const T &);
00240
00241 template<> PGSTD::string PQXX_LIBEXPORT to_string(const short &);
00242 template<>
00243 PGSTD::string PQXX_LIBEXPORT to_string(const unsigned short &);
00244 template<> PGSTD::string PQXX_LIBEXPORT to_string(const int &);
00245 template<>
00246 PGSTD::string PQXX_LIBEXPORT to_string(const unsigned int &);
00247 template<> PGSTD::string PQXX_LIBEXPORT to_string(const long &);
00248 template<>
00249 PGSTD::string PQXX_LIBEXPORT to_string(const unsigned long &);
00250 template<> PGSTD::string PQXX_LIBEXPORT to_string(const float &);
00251 template<> PGSTD::string PQXX_LIBEXPORT to_string(const double &);
00252 template<> PGSTD::string PQXX_LIBEXPORT to_string(const bool &);
00253 #if defined(PQXX_HAVE_LONG_DOUBLE)
00254 template<> PGSTD::string PQXX_LIBEXPORT to_string(const long double &);
00255 #endif
00256
00257 inline PGSTD::string to_string(const char Obj[])
00258 { return PGSTD::string(Obj); }
00259
00260 inline PGSTD::string to_string(const PGSTD::stringstream &Obj)
00261 { return Obj.str(); }
00262
00263 inline PGSTD::string to_string(const PGSTD::string &Obj) {return Obj;}
00264
00265 template<> PGSTD::string PQXX_LIBEXPORT to_string(const char &);
00266
00267
00268 template<> inline PGSTD::string to_string(const signed char &Obj)
00269 { return error_ambiguous_string_conversion(Obj); }
00270 template<> inline PGSTD::string to_string(const unsigned char &Obj)
00271 { return error_ambiguous_string_conversion(Obj); }
00273
00275
00297 template<typename T=PGSTD::string, typename CONT=PGSTD::vector<T> >
00298 class items : public CONT
00299 {
00300 public:
00302 items() : CONT() {}
00304 explicit items(const T &t) : CONT() { push_back(t); }
00305 items(const T &t1, const T &t2) : CONT()
00306 { push_back(t1); push_back(t2); }
00307 items(const T &t1, const T &t2, const T &t3) : CONT()
00308 { push_back(t1); push_back(t2); push_back(t3); }
00309 items(const T &t1, const T &t2, const T &t3, const T &t4) : CONT()
00310 { push_back(t1); push_back(t2); push_back(t3); push_back(t4); }
00311 items(const T&t1,const T&t2,const T&t3,const T&t4,const T&t5):CONT()
00312 {push_back(t1);push_back(t2);push_back(t3);push_back(t4);push_back(t5);}
00314 items(const CONT &c) : CONT(c) {}
00315
00317 items &operator()(const T &t)
00318 {
00319 push_back(t);
00320 return *this;
00321 }
00322 };
00323
00324
00325 namespace internal
00326 {
00327
00329 template<typename ITER> struct dereference
00330 {
00331 typename ITER::value_type operator()(ITER i) const { return *i; }
00332 };
00333 template<typename T> struct deref_ptr { T operator()(T *i) const {return *i;} };
00334 }
00335
00336
00338
00344 template<typename ITER, typename ACCESS> inline
00345 PGSTD::string separated_list(const PGSTD::string &sep,
00346 ITER begin,
00347 ITER end,
00348 ACCESS access)
00349 {
00350 PGSTD::string result;
00351 if (begin != end)
00352 {
00353 result = to_string(access(begin));
00354 for (++begin; begin != end; ++begin)
00355 {
00356 result += sep;
00357 result += to_string(access(begin));
00358 }
00359 }
00360 return result;
00361 }
00362
00367
00369 template<typename ITER> inline PGSTD::string
00370 separated_list(const PGSTD::string &sep, ITER begin, ITER end)
00371 { return separated_list(sep,begin,end,internal::dereference<ITER>()); }
00372
00373
00375 template<typename OBJ> inline PGSTD::string
00376 separated_list(const PGSTD::string &sep, OBJ *begin, OBJ *end)
00377 { return separated_list(sep,begin,end,internal::deref_ptr<OBJ>()); }
00378
00379
00381 template<typename CONTAINER> inline PGSTD::string
00382 separated_list(const PGSTD::string &sep, const CONTAINER &c)
00383 { return separated_list(sep, c.begin(), c.end()); }
00385
00387
00396 namespace internal
00397 {
00398 typedef unsigned long result_size_type;
00399 typedef long result_difference_type;
00400
00402
00410 template<typename T> inline const char *FmtString(T t) PQXX_DEPRECATED
00411 {
00412 error_unsupported_type_in_string_conversion(t);
00413 return 0;
00414 }
00415
00416 template<> inline const char *FmtString(short) { return "%hd"; }
00417 template<> inline const char *FmtString(unsigned short){ return "%hu"; }
00418 template<> inline const char *FmtString(int) { return "%i"; }
00419 template<> inline const char *FmtString(long) { return "%li"; }
00420 template<> inline const char *FmtString(unsigned) { return "%u"; }
00421 template<> inline const char *FmtString(unsigned long) { return "%lu"; }
00422 template<> inline const char *FmtString(float) { return "%f"; }
00423 template<> inline const char *FmtString(double) { return "%lf"; }
00424 template<> inline const char *FmtString(char) { return "%c"; }
00425 template<> inline const char *FmtString(unsigned char) { return "%c"; }
00426 #if defined(PQXX_HAVE_LONG_DOUBLE)
00427 template<> inline const char *FmtString(long double) { return "%Lf"; }
00428 #endif
00429
00430 }
00431
00433
00441 template<typename T> inline PGSTD::string ToString(const T &Obj) PQXX_DEPRECATED
00442 {
00443
00444 char Buf[500];
00445 sprintf(Buf, internal::FmtString(Obj), Obj);
00446 return PGSTD::string(Buf);
00447 }
00448
00449
00450 template<> inline PGSTD::string ToString(const PGSTD::string &Obj) {return Obj;}
00451 template<> inline PGSTD::string ToString(const char *const &Obj) { return Obj; }
00452 template<> inline PGSTD::string ToString(char *const &Obj) { return Obj; }
00453
00454 template<> inline PGSTD::string ToString(const unsigned char *const &Obj)
00455 {
00456 return reinterpret_cast<const char *>(Obj);
00457 }
00458
00459 template<> inline PGSTD::string ToString(const bool &Obj)
00460 {
00461 return ToString(unsigned(Obj));
00462 }
00463
00464 template<> inline PGSTD::string ToString(const short &Obj)
00465 {
00466 return ToString(int(Obj));
00467 }
00468
00469 template<> inline PGSTD::string ToString(const unsigned short &Obj)
00470 {
00471 return ToString(unsigned(Obj));
00472 }
00473
00474
00476
00484 template<typename T> inline void FromString(const char Str[], T &Obj)
00485 PQXX_DEPRECATED
00486 {
00487 if (!Str) throw PGSTD::runtime_error("Attempt to convert NULL string to " +
00488 PGSTD::string(typeid(T).name()));
00489
00490 if (sscanf(Str, internal::FmtString(Obj), &Obj) != 1)
00491 throw PGSTD::runtime_error("Cannot convert value '" +
00492 PGSTD::string(Str) +
00493 "' to " + typeid(T).name());
00494 }
00495
00496
00497 namespace internal
00498 {
00500
00502 PGSTD::string escape_string(const char str[], size_t maxlen);
00503
00505
00507 void PQXX_LIBEXPORT FromString_string(const char Str[], PGSTD::string &Obj)
00508 PQXX_DEPRECATED;
00509
00511
00513 void PQXX_LIBEXPORT FromString_ucharptr(const char Str[],
00514 const unsigned char *&Obj)
00515 PQXX_DEPRECATED;
00516
00518 PGSTD::string PQXX_LIBEXPORT Quote_string(const PGSTD::string &Obj,
00519 bool EmptyIsNull);
00520
00522 PGSTD::string PQXX_LIBEXPORT Quote_charptr(const char Obj[], bool EmptyIsNull);
00523 }
00524
00525
00526 template<> inline void FromString(const char Str[], PGSTD::string &Obj)
00527 {
00528 internal::FromString_string(Str, Obj);
00529 }
00530
00531 template<> inline void FromString(const char Str[], const char *&Obj)
00532 {
00533 if (!Str) throw PGSTD::runtime_error("Attempt to read NULL string");
00534 Obj = Str;
00535 }
00536
00537 template<> inline void FromString(const char Str[], const unsigned char *&Obj)
00538 {
00539 internal::FromString_ucharptr(Str, Obj);
00540 }
00541
00542 template<> inline void FromString(const char Str[], bool &Obj)
00543 {
00544 from_string(Str, Obj);
00545 }
00546
00547
00614
00615
00627 PGSTD::string PQXX_LIBEXPORT sqlesc(const char str[]);
00628
00630
00643 PGSTD::string PQXX_LIBEXPORT sqlesc(const char str[], size_t maxlen);
00644
00646
00652 PGSTD::string PQXX_LIBEXPORT sqlesc(const PGSTD::string &);
00653
00654
00656
00661 template<typename T> PGSTD::string Quote(const T &Obj, bool EmptyIsNull)
00662 PQXX_DEPRECATED;
00663
00664
00666
00668 template<>
00669 inline PGSTD::string Quote(const PGSTD::string &Obj, bool EmptyIsNull)
00670 PQXX_DEPRECATED
00671 {
00672 return internal::Quote_string(Obj, EmptyIsNull);
00673 }
00674
00676
00678 template<> inline PGSTD::string Quote(const char *const & Obj, bool EmptyIsNull)
00679 PQXX_DEPRECATED
00680 {
00681 return internal::Quote_charptr(Obj, EmptyIsNull);
00682 }
00683
00684
00686
00693 template<int LEN> inline PGSTD::string Quote(const char (&Obj)[LEN],
00694 bool EmptyIsNull)
00695 PQXX_DEPRECATED
00696 {
00697 return internal::Quote_charptr(Obj, EmptyIsNull);
00698 }
00699
00700
00701 template<typename T> inline PGSTD::string Quote(const T &Obj, bool EmptyIsNull)
00702 PQXX_DEPRECATED
00703 {
00704 return Quote(ToString(Obj), EmptyIsNull);
00705 }
00706
00707
00709
00713 template<typename T> inline PGSTD::string Quote(T Obj) PQXX_DEPRECATED
00714 {
00715 return Quote(Obj, false);
00716 }
00718
00719
00720 namespace internal
00721 {
00722 void PQXX_LIBEXPORT freepqmem(void *);
00723
00724
00726 class PQXX_LIBEXPORT refcount
00727 {
00728 refcount *volatile m_l, *volatile m_r;
00729
00730 public:
00731 refcount();
00732 ~refcount();
00733
00735 void makeref(refcount &) throw ();
00736
00738 bool loseref() throw ();
00739
00740 private:
00742 refcount(const refcount &);
00744 refcount &operator=(const refcount &);
00745 };
00746
00747
00749
00763 template<typename T> class PQAlloc
00764 {
00765 T *m_Obj;
00766 mutable refcount m_rc;
00767 public:
00768 typedef T content_type;
00769
00770 PQAlloc() throw () : m_Obj(0), m_rc() {}
00771 PQAlloc(const PQAlloc &rhs) throw () : m_Obj(0), m_rc() { makeref(rhs); }
00772 ~PQAlloc() throw () { loseref(); }
00773
00774 PQAlloc &operator=(const PQAlloc &rhs) throw () {redoref(rhs); return *this;}
00775
00777
00779 explicit PQAlloc(T *obj) throw () : m_Obj(obj), m_rc() {}
00780
00781 void swap(PQAlloc &rhs) throw ()
00782 {
00783 PQAlloc tmp(*this);
00784 *this = rhs;
00785 rhs = tmp;
00786 }
00787
00788 PQAlloc &operator=(T *obj) throw () { redoref(obj); return *this; }
00789
00791 operator bool() const throw () { return m_Obj != 0; }
00792
00794 bool operator!() const throw () { return !m_Obj; }
00795
00797
00799 T *operator->() const throw (PGSTD::logic_error)
00800 {
00801 if (!m_Obj) throw PGSTD::logic_error("Null pointer dereferenced");
00802 return m_Obj;
00803 }
00804
00806
00808 T &operator*() const throw (PGSTD::logic_error) { return *operator->(); }
00809
00811
00813 T *c_ptr() const throw () { return m_Obj; }
00814
00815 void clear() throw () { loseref(); }
00816
00817 private:
00818 void makeref(T *p) throw () { m_Obj = p; }
00819
00820 void makeref(const PQAlloc &rhs) throw ()
00821 {
00822 m_Obj = rhs.m_Obj;
00823 m_rc.makeref(rhs.m_rc);
00824 }
00825
00827 void loseref() throw ()
00828 {
00829 if (m_rc.loseref() && m_Obj) freemem();
00830 m_Obj = 0;
00831 }
00832
00833 void redoref(const PQAlloc &rhs) throw ()
00834 { if (rhs.m_Obj != m_Obj) { loseref(); makeref(rhs); } }
00835 void redoref(T *obj) throw ()
00836 { if (obj != m_Obj) { loseref(); makeref(obj); } }
00837
00838 void freemem() throw () { freepqmem(m_Obj); }
00839 };
00840
00841
00842 void PQXX_LIBEXPORT freemem_result(pq::PGresult *) throw ();
00843 template<> inline void PQAlloc<pq::PGresult>::freemem() throw ()
00844 { freemem_result(m_Obj); }
00845
00846 void PQXX_LIBEXPORT freemem_notif(pq::PGnotify *) throw ();
00847 template<> inline void PQAlloc<pq::PGnotify>::freemem() throw ()
00848 { freemem_notif(m_Obj); }
00849
00850
00851
00852 template<typename T> class scoped_array
00853 {
00854 T *m_ptr;
00855 public:
00856 typedef size_t size_type;
00857 typedef long difference_type;
00858
00859 scoped_array() : m_ptr(0) {}
00860 explicit scoped_array(size_type n) : m_ptr(new T[n]) {}
00861 explicit scoped_array(T *t) : m_ptr(t) {}
00862 ~scoped_array() { delete [] m_ptr; }
00863
00864 T *c_ptr() const throw () { return m_ptr; }
00865 T &operator*() const throw () { return *m_ptr; }
00866 T &operator[](difference_type i) const throw () { return m_ptr[i]; }
00867
00868 scoped_array &operator=(T *t) throw ()
00869 {
00870 if (t != m_ptr)
00871 {
00872 delete [] m_ptr;
00873 m_ptr = t;
00874 }
00875 return *this;
00876 }
00877
00878 private:
00880 scoped_array(const scoped_array &);
00881 scoped_array &operator=(const scoped_array &);
00882 };
00883
00884
00885 class PQXX_LIBEXPORT namedclass
00886 {
00887 public:
00888 namedclass(const PGSTD::string &Classname, const PGSTD::string &Name="") :
00889 m_Classname(Classname),
00890 m_Name(Name)
00891 {
00892 }
00893
00894 const PGSTD::string &name() const throw () { return m_Name; }
00895 const PGSTD::string &classname() const throw () {return m_Classname;}
00896 PGSTD::string description() const;
00897
00898 private:
00899 PGSTD::string m_Classname, m_Name;
00900 };
00901
00902
00903 void CheckUniqueRegistration(const namedclass *New, const namedclass *Old);
00904 void CheckUniqueUnregistration(const namedclass *New, const namedclass *Old);
00905
00906
00908
00911 template<typename GUEST>
00912 class unique
00913 {
00914 public:
00915 unique() : m_Guest(0) {}
00916
00917 GUEST *get() const throw () { return m_Guest; }
00918
00919 void Register(GUEST *G)
00920 {
00921 CheckUniqueRegistration(G, m_Guest);
00922 m_Guest = G;
00923 }
00924
00925 void Unregister(GUEST *G)
00926 {
00927 CheckUniqueUnregistration(G, m_Guest);
00928 m_Guest = 0;
00929 }
00930
00931 private:
00932 GUEST *m_Guest;
00933
00935 unique(const unique &);
00937 unique &operator=(const unique &);
00938 };
00939
00941
00944 void PQXX_LIBEXPORT sleep_seconds(int);
00945
00947 typedef const char *cstring;
00948
00950
00959 cstring PQXX_LIBEXPORT strerror_wrapper(int err, char buf[], PGSTD::size_t len)
00960 throw ();
00961
00962
00964 extern const char sql_begin_work[], sql_commit_work[], sql_rollback_work[];
00965
00966 }
00967 }
00968