iconv_open: Add support for z/OS encoding names.

Reported by Daniel Richard G. in
<https://lists.gnu.org/archive/html/bug-gnulib/2019-12/msg00172.html>.

* lib/iconv_open-zos.gperf: New file.
* modules/iconv_open (Files): Add iconv_open-zos.gperf.
(Makefile.am): Add rules for generating iconv_open-zos.h from it.
* lib/iconv_open.c (ICONV_FLAVOR_ZOS): New macro.
* m4/iconv_open.m4 (gl_FUNC_ICONV_OPEN): On z/OS, use ICONV_FLAVOR_ZOS.
* doc/posix-functions/iconv_open.texi: Mention z/OS.

1 files changed, 68 insertions, 0 deletions

diff --git a/lib/iconv_open-zos.gperf b/lib/iconv_open-zos.gperf
new file mode 100644
index 0000000000..d44b5d7d2c
--- /dev/null
+++ b/lib/iconv_open-zos.gperf
@@ -0,0 +1,68 @@
+/* Character set conversion.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+struct mapping { int standard_name; const char vendor_name[10 + 1]; };
+%struct-type
+%language=ANSI-C
+%define slot-name standard_name
+%define hash-function-name mapping_hash
+%define lookup-function-name mapping_lookup
+%readonly-tables
+%global-table
+%define word-array-name mappings
+%pic
+%%
+ASCII, "00367"
+ISO-8859-1, "ISO8859-1"
+ISO-8859-2, "ISO8859-2"
+ISO-8859-4, "ISO8859-4"
+ISO-8859-5, "ISO8859-5"
+ISO-8859-6, "ISO8859-6"
+ISO-8859-7, "ISO8859-7"
+ISO-8859-8, "ISO8859-8"
+ISO-8859-9, "ISO8859-9"
+ISO-8859-13, "ISO8859-13"
+ISO-8859-15, "ISO8859-15"
+CP437, "IBM-437"
+CP850, "IBM-850"
+CP852, "IBM-852"
+CP855, "IBM-855"
+CP856, "IBM-856"
+CP861, "IBM-861"
+CP862, "IBM-862"
+CP864, "IBM-864"
+CP866, "IBM-866"
+CP869, "IBM-869"
+CP874, "TIS-620"
+CP922, "IBM-922"
+CP932, "IBM-eucJC"
+CP943, "IBM-943"
+CP949, "IBM-949"
+CP1046, "IBM-1046"
+CP1124, "IBM-1124"
+CP1125, "IBM-1125"
+CP1250, "IBM-1250"
+CP1251, "IBM-1251"
+CP1252, "IBM-1252"
+CP1253, "IBM-1253"
+CP1254, "IBM-1254"
+CP1255, "IBM-1255"
+CP1256, "IBM-1256"
+GB2312, "IBM-eucCN"
+EUC-JP, "EUCJP"
+EUC-KR, "IBM-eucKR"
+EUC-TW, "IBM-eucTW"
+GBK, "IBM-936"