ICONV_OPEN(3) Linux Programmer's Manual ICONV_OPEN(3) NAME iconv_open - allocate descriptor for character set conversion SYNOPSIS #include <iconv.h> iconv_t iconv_open(const char *tocode, const char *fromcode); DESCRIPTION The iconv_open() function allocates a conversion descriptor suitable for converting byte sequences from character encoding fromcode to char- acter encoding tocode. The values permitted for fromcode and tocode and the supported combina- tions are system-dependent. For the GNU C library, the permitted val- ues 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, translitera- tion 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 num- ber 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. (This implies that a con- version descriptor can not be used in multiple threads simultaneously.) To bring the state back to the initial state, use iconv(3) with NULL as inbuf argument. RETURN VALUE The iconv_open() function returns a freshly allocated conversion descriptor. In case of error, it sets errno and returns (iconv_t) -1. ERRORS The following error can occur, among others: EINVAL The conversion from fromcode to tocode is not supported by the implementation. VERSIONS This function is available in glibc since version 2.1. CONFORMING TO UNIX98, POSIX.1-2001. SEE ALSO iconv(1), iconv(3), iconv_close(3) COLOPHON This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU 2008-08-11 ICONV_OPEN(3)
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