выделить дескриптор для преобразования набора символов (allocate descriptor for character set conversion)
Имя (Name)
iconv_open - allocate descriptor for character set conversion
Синопсис (Synopsis)
#include <iconv.h>
iconv_t iconv_open(const char *tocode, const char *fromcode);
Описание (Description)
The iconv_open() function allocates a conversion descriptor
suitable for converting byte sequences from character encoding
fromcode to character encoding tocode.
The values permitted for fromcode and tocode and the supported
combinations are system-dependent. For the GNU C library, the
permitted values are listed by the iconv --list command, and all
combinations of the listed values are supported. Furthermore the
GNU C library and the GNU libiconv library support the following
two suffixes:
//TRANSLIT
When the string "//TRANSLIT" is appended to tocode,
transliteration is activated. This means that when a
character cannot be represented in the target character
set, it can be approximated through one or several
similarly looking characters.
//IGNORE
When the string "//IGNORE" is appended to tocode,
characters that cannot be represented in the target
character set will be silently discarded.
The resulting conversion descriptor can be used with iconv(3) any
number of times. It remains valid until deallocated using
iconv_close(3).
A conversion descriptor contains a conversion state. After
creation using iconv_open(), the state is in the initial state.
Using iconv(3) modifies the descriptor's conversion state. To
bring the state back to the initial state, use iconv(3) with NULL
as inbuf argument.
Возвращаемое значение (Return value)
On success, iconv_open() returns a freshly allocated conversion
descriptor. On failure, it returns (iconv_t) -1 and sets errno
to indicate the error.
Ошибки (Error)
The following error can occur, among others:
EINVAL The conversion from fromcode to tocode is not supported by
the implementation.
Версии (Versions)
This function is available in glibc since version 2.1.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────────────────────┬───────────────┬────────────────┐
│Interface │ Attribute │ Value │
├───────────────────────────────┼───────────────┼────────────────┤
│iconv_open() │ Thread safety │ MT-Safe locale │
└───────────────────────────────┴───────────────┴────────────────┘
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008, SUSv2.
Смотри также (See also)
iconv(1), iconv(3), iconv_close(3)
