Software:iconv

From HandWiki
Short description: Standard UNIX utility

iconv
Original author(s)Hewlett-Packard
Developer(s)Various open-source and commercial developers
Repositoryhttps://git.savannah.gnu.org/git/libiconv.git
Operating systemUnix, Unix-like, Microsoft Windows, IBM i
PlatformCross-platform
TypeCommand
Licenselibiconv: LGPL
iconv: GPL
win-iconv: Public domain[1]

In Unix and Unix-like operating systems, iconv (an abbreviation of internationalization conversion)[2] is a command-line program[3] and a standardized application programming interface (API)[4] used to convert between different character encodings. "It can convert from any of these encodings to any other, through Unicode conversion."[5]

History

Initially appearing on the HP-UX operating system,[6]iconv() as well as the utility was standardized within XPG4 and is part of the Single UNIX Specification (SUS).

Implementations

Most Linux distributions provide an implementation, either from the GNU Standard C Library (included since version 2.1, February 1999), or the more traditional GNU libiconv, for systems based on other Standard C Libraries.

The iconv function[7] on both is licensed as LGPL, so it is linkable with closed source applications.

Unlike the libraries, the iconv utility is licensed under GPL in both implementations.[8] The GNU libiconv implementation is portable, and can be used on various UNIX-like and non-UNIX systems. Version 0.3 dates from December 1999.

The uconv utility from International Components for Unicode provides an iconv-compatible command-line syntax for transcoding.

Most BSD systems use NetBSD's implementation, first appeared in December 2004.

Support

Currently, over a hundred different character encodings are supported.[5]

Ports

Under Microsoft Windows, the iconv library and the utility is provided by GNU's libiconv found in Cygwin[9] and GnuWin32[10] environments; there is also a "purely Win32" implementation called "win-iconv" that uses Windows' built-in routines for conversion.[11] The iconv function is also available for many programming languages.

The iconv command has also been ported to the IBM i operating system.[12]

Usage

stdin can be converted from ISO-8859-1 to current locale and output to stdout using:[13] 

iconv -f iso-8859-1

An input file infile can be converted from ISO-8859-1 to UTF-8 and output to output file outfile using: 

iconv -f iso-8859-1 -t utf-8 <infile> -o <outfile>

See also

References

  1. ↑ "win-iconv/readme.txt at master · win-iconv/win-iconv · GitHub". https://github.com/win-iconv/win-iconv/blob/master/readme.txt. 
  2. ↑ "R: Convert Character Vector between Encodings". http://astrostatistics.psu.edu/su07/R/html/base/html/iconv.html. 
  3. ↑ "iconv". http://pubs.opengroup.org/onlinepubs/9699919799/utilities/iconv.html. 
  4. ↑ "iconv". http://www.opengroup.org/onlinepubs/009695399/functions/iconv.html. 
  5. ↑ 5.0 5.1 "libiconv - GNU Project - Free Software Foundation (FSF)". https://www.gnu.org/software/libiconv/. 
  6. ↑ "iconv(3C)". http://docstore.mik.ua/manuals/hp-ux/en/B2355-60130/iconv.3C.html. 
  7. ↑ "glibc: iconv/iconv.c". https://sourceware.org/git/?p=glibc.git;a=blob;f=iconv/iconv.c. [yes|permanent dead link|dead link}}]
  8. ↑ "glibc: iconv/iconv_prog.c". https://sourceware.org/git/?p=glibc.git;a=blob;f=iconv/iconv_prog.c. [yes|permanent dead link|dead link}}]
  9. ↑ "Cygwin Package Search: libiconv". https://cygwin.com/cgi-bin2/package-grep.cgi?grep=libiconv. 
  10. ↑ "LibIconv for Windows". http://gnuwin32.sourceforge.net/packages/libiconv.htm. 
  11. ↑ "win32-iconv". https://github.com/win-iconv/win-iconv. 
  12. ↑ IBM. "IBM System i Version 7.2 Programming Qshell" (in en). https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_74/rzahz/rzahzpdf.pdf?view=kc. 
  13. ↑ "IBM Knowledge Center". http://www-01.ibm.com/support/knowledgecenter/ssw_aix_53/com.ibm.aix.cmds/doc/aixcmds3/iconv.htm. 

External links



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