libiconv库 实现一个字符编码到另一个字符编码的转换 已编译成dll,lib

/* Copyright (C) 1999-2003 Free Software Foundation, Inc. This file is part of the GNU LIBICONV Library. The GNU LIBICONV 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. The GNU LIBICONV 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 the GNU LIBICONV Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* When installed, this file is called "iconv.h". */ #ifndef _LIBICONV_H #define _LIBICONV_H #define _LIBICONV_VERSION 0x0109 /* version number: (major<<8) + minor */ #ifdef LIBICONV_STATIC #define LIBICONV_DLL_EXPORTED #else /* LIBICONV_STATIC */ #ifdef BUILDING_LIBICONV #define LIBICONV_DLL_EXPORTED __declspec(dllexport) #else #define LIBICONV_DLL_EXPORTED __declspec(dllimport) #endif #endif /* LIBICONV_STATIC */ extern LIBICONV_DLL_EXPORTED int _libiconv_version; /* Likewise */ /* We would like to #include any system header file which could define iconv_t, 1. in order to eliminate the risk that the user gets compilation errors because some other system header file includes /usr/include/iconv.h which defines iconv_t or declares iconv after this file, 2. when compiling for LIBICONV_PLUG, we need the proper iconv_t type in order to produce binary compatible code. But gcc's #include_next is not portable. Thus, once libiconv's iconv.h has been installed in /usr/local/include, there is no way any more to include the original /usr/include/iconv.h. We simply have to get away without it. Ad 1. The risk that a system header file does #include "iconv.h" or #include_next "iconv.h" is small. They all do #include <iconv.h>. Ad 2. The iconv_t type is a pointer type in all cases I have seen. (It has to be a scalar type because (iconv_t)(-1) is a possible return value from iconv_open().) */ /* Define iconv_t ourselves. */ #undef iconv_t #define iconv_t libiconv_t typedef void* iconv_t; /* Get size_t declaration. */ #include <stddef.h> /* Get errno declaration and values. */ #include <errno.h> /* Some systems, like SunOS 4, don't have EILSEQ. Some systems, like BSD/OS, have EILSEQ in a different header. On these systems, define EILSEQ ourselves. */ #ifndef EILSEQ #define EILSEQ #endif #ifdef __cplusplus extern "C" { #endif /* Allocates descriptor for code conversion from encoding `fromcode' to encoding `tocode'. */ #ifndef LIBICONV_PLUG #define iconv_open libiconv_open #endif extern LIBICONV_DLL_EXPORTED iconv_t iconv_open (const char* tocode, const char* fromcode); /* Converts, using conversion descriptor `cd', at most `*inbytesleft' bytes starting at `*inbuf', writing at most `*outbytesleft' bytes starting at `*outbuf'. Decrements `*inbytesleft' and increments `*inbuf' by the same amount. Decrements `*outbytesleft' and increments `*outbuf' by the same amount. */ #ifndef LIBICONV_PLUG #define iconv libiconv #endif extern LIBICONV_DLL_EXPORTED size_t iconv (iconv_t cd, const char* * inbuf, size_t *inbytesleft, char* * outbuf, size_t *outbytesleft); /* Frees resources allocated for conversion descriptor `cd'. */ #ifndef LIBICONV_PLUG #define iconv_close libiconv_close #endif extern LIBICONV_DLL_EXPORTED int iconv_close (iconv_t cd); #ifndef LIBICONV_PLUG /* Nonstandard extensions. */ /* Control of attributes. */ #define iconvctl libiconvctl extern LIBICONV_DLL_EXPORTED int iconvctl (iconv_t cd, int request, void* argument); /* Requests for iconvctl. */ #define ICONV_TRIVIALP 0 /* int *argument */ #define ICONV_GET_TRANSLITERATE 1 /* int *argument */ #define ICONV_SET_TRANSLITERATE 2 /* const int *argument */ #define ICONV_GET_DISCARD_ILSEQ 3 /* int *argument */ #define ICONV_SET_DISCARD_ILSEQ 4 /* const int *argument */ /* Listing of locale independent encodings. */ #define iconvlist libiconvlist extern LIBICONV_DLL_EXPORTED void iconvlist (int (*do_one) (unsigned int namescount, const char * const * names, void* data), void* data); /* Support for relocatable packages. */ /* Sets the original and the current installation prefix of the package. Relocation simply replaces a pathname starting with the original prefix by the corresponding pathname with the current prefix instead. Both prefixes should be directory names without trailing slash (i.e. use "" instead of "/"). */ extern LIBICONV_DLL_EXPORTED void libiconv_set_relocation_prefix (const char *orig_prefix, const char *curr_prefix); #endif #ifdef __cplusplus } #endif #endif /* _LIBICONV_H */