iconv
| Original author(s) | Hewlett-Packard |
|---|---|
| Operating system | Unix and Unix-like |
| Type | Command |
| License | LGPL, GPL |
In Unix-like operating systems, iconv (an abbreviation of internationalization conversion)[1] is a command-line program[2] and a standardized application programming interface (API)[3] used to convert between different character encodings. "It can convert from any of these encodings to any other, through Unicode conversion."[4]
Contents
History[edit]
Initially appearing on the HP-UX operating system,[5]iconv() as well as the utility was standardized within XPG4 and is part of the Single UNIX Specification (SUS).
The version of iconv that is part of the GNU C Library was written by Ulrich Drepper.[6]
Implementations[edit]
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[edit]
Currently, over a hundred different character encodings are supported.[4]
Ports[edit]
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.
Usage[edit]
stdin can be converted from ISO-8859-1 to current locale and output to stdout using:[12]
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 >outfile
See also[edit]
References[edit]
- ^ "R: Convert Character Vector between Encodings". astrostatistics.psu.edu. Retrieved 21 April 2018.
- ^ "iconv". pubs.opengroup.org. Retrieved 21 April 2018.
- ^ "iconv". www.opengroup.org. Retrieved 21 April 2018.
- ^ a b "libiconv - GNU Project - Free Software Foundation (FSF)". www.gnu.org. Retrieved 21 April 2018.
- ^ "iconv(3C)". docstore.mik.ua. Retrieved 21 April 2018.
- ^ https://linux.die.net/man/1/iconv
- ^ "glibc: iconv/iconv.c". Retrieved 30 November 2016.
- ^ "glibc: iconv/iconv_prog.c". Retrieved 30 November 2016.
- ^ "Cygwin Package Search: libiconv". Archived from the original on 30 November 2016. Retrieved 30 November 2016.
- ^ "LibIconv for Windows". gnuwin32.sourceforge.net. Retrieved 21 April 2018.
- ^ "win32-iconv". GitHub. Retrieved 30 November 2016.
- ^ "IBM Knowledge Center". www-01.ibm.com. Retrieved 21 April 2018.
External links[edit]
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