m4/iconv_open.m4

   1 # iconv_open.m4 serial 7
   2 dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
   3 dnl This file is free software; the Free Software Foundation
   4 dnl gives unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 AC_DEFUN([gl_FUNC_ICONV_OPEN],
   8 [
   9   AC_REQUIRE([AM_ICONV])
  10   AC_REQUIRE([AC_CANONICAL_HOST])
  11   AC_REQUIRE([gl_ICONV_H_DEFAULTS])
  12   if test "$am_cv_func_iconv" = yes; then
  13     dnl Provide the <iconv.h> override, for the sake of the C++ aliases.
  14     gl_REPLACE_ICONV_H
  15     dnl Test whether iconv_open accepts standardized encoding names.
  16     dnl We know that GNU libiconv and GNU libc do.
  17     AC_EGREP_CPP([gnu_iconv], [
  18       #include <iconv.h>
  19       #if defined _LIBICONV_VERSION || defined __GLIBC__
  20        gnu_iconv
  21       #endif
  22       ], [gl_func_iconv_gnu=yes], [gl_func_iconv_gnu=no])
  23     if test $gl_func_iconv_gnu = no; then
  24       iconv_flavor=
  25       case "$host_os" in
  26         aix*)     iconv_flavor=ICONV_FLAVOR_AIX ;;
  27         irix*)    iconv_flavor=ICONV_FLAVOR_IRIX ;;
  28         hpux*)    iconv_flavor=ICONV_FLAVOR_HPUX ;;
  29         osf*)     iconv_flavor=ICONV_FLAVOR_OSF ;;
  30         solaris*) iconv_flavor=ICONV_FLAVOR_SOLARIS ;;
  31       esac
  32       if test -n "$iconv_flavor"; then
  33         AC_DEFINE_UNQUOTED([ICONV_FLAVOR], [$iconv_flavor],
  34           [Define to a symbolic name denoting the flavor of iconv_open()
  35            implementation.])
  36         gl_REPLACE_ICONV_OPEN
  37       fi
  38     fi
  39   fi
  40 ])
  41
  42 AC_DEFUN([gl_REPLACE_ICONV_OPEN],
  43 [
  44   gl_REPLACE_ICONV_H
  45   REPLACE_ICONV_OPEN=1
  46   AC_LIBOBJ([iconv_open])
  47 ])
  48
  49 AC_DEFUN([gl_FUNC_ICONV_OPEN_UTF],
  50 [
  51   AC_REQUIRE([gl_FUNC_ICONV_OPEN])
  52   AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
  53   AC_REQUIRE([gl_ICONV_H_DEFAULTS])
  54   if test "$am_cv_func_iconv" = yes; then
  55     if test -n "$am_cv_proto_iconv_arg1"; then
  56       ICONV_CONST="const"
  57     else
  58       ICONV_CONST=
  59     fi
  60     AC_SUBST([ICONV_CONST])
  61     AC_CACHE_CHECK([whether iconv supports conversion between UTF-8 and UTF-{16,32}{BE,LE}],
  62       [gl_cv_func_iconv_supports_utf],
  63       [
  64         save_LIBS="$LIBS"
  65         LIBS="$LIBS $LIBICONV"
  66         AC_TRY_RUN([
  67 #include <iconv.h>
  68 #include <errno.h>
  69 #include <stdio.h>
  70 #include <stdlib.h>
  71 #include <string.h>
  72 #define ASSERT(expr) if (!(expr)) return 1;
  73 int main ()
  74 {
  75   /* Test conversion from UTF-8 to UTF-16BE with no errors.  */
  76   {
  77     static const char input[] =
  78       "Japanese (\346\227\245\346\234\254\350\252\236) [\360\235\224\215\360\235\224\236\360\235\224\255]";
  79     static const char expected[] =
  80       "\000J\000a\000p\000a\000n\000e\000s\000e\000 \000(\145\345\147\054\212\236\000)\000 \000[\330\065\335\015\330\065\335\036\330\065\335\055\000]";
  81     iconv_t cd;
  82     char buf[100];
  83     const char *inptr;
  84     size_t inbytesleft;
  85     char *outptr;
  86     size_t outbytesleft;
  87     size_t res;
  88     cd = iconv_open ("UTF-16BE", "UTF-8");
  89     ASSERT (cd != (iconv_t)(-1));
  90     inptr = input;
  91     inbytesleft = sizeof (input) - 1;
  92     outptr = buf;
  93     outbytesleft = sizeof (buf);
  94     res = iconv (cd,
  95                  (ICONV_CONST char **) &inptr, &inbytesleft,
  96                  &outptr, &outbytesleft);
  97     ASSERT (res == 0 && inbytesleft == 0);
  98     ASSERT (outptr == buf + (sizeof (expected) - 1));
  99     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
 100     ASSERT (iconv_close (cd) == 0);
 101   }
 102   /* Test conversion from UTF-8 to UTF-16LE with no errors.  */
 103   {
 104     static const char input[] =
 105       "Japanese (\346\227\245\346\234\254\350\252\236) [\360\235\224\215\360\235\224\236\360\235\224\255]";
 106     static const char expected[] =
 107       "J\000a\000p\000a\000n\000e\000s\000e\000 \000(\000\345\145\054\147\236\212)\000 \000[\000\065\330\015\335\065\330\036\335\065\330\055\335]\000";
 108     iconv_t cd;
 109     char buf[100];
 110     const char *inptr;
 111     size_t inbytesleft;
 112     char *outptr;
 113     size_t outbytesleft;
 114     size_t res;
 115     cd = iconv_open ("UTF-16LE", "UTF-8");
 116     ASSERT (cd != (iconv_t)(-1));
 117     inptr = input;
 118     inbytesleft = sizeof (input) - 1;
 119     outptr = buf;
 120     outbytesleft = sizeof (buf);
 121     res = iconv (cd,
 122                  (ICONV_CONST char **) &inptr, &inbytesleft,
 123                  &outptr, &outbytesleft);
 124     ASSERT (res == 0 && inbytesleft == 0);
 125     ASSERT (outptr == buf + (sizeof (expected) - 1));
 126     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
 127     ASSERT (iconv_close (cd) == 0);
 128   }
 129   /* Test conversion from UTF-8 to UTF-32BE with no errors.  */
 130   {
 131     static const char input[] =
 132       "Japanese (\346\227\245\346\234\254\350\252\236) [\360\235\224\215\360\235\224\236\360\235\224\255]";
 133     static const char expected[] =
 134       "\000\000\000J\000\000\000a\000\000\000p\000\000\000a\000\000\000n\000\000\000e\000\000\000s\000\000\000e\000\000\000 \000\000\000(\000\000\145\345\000\000\147\054\000\000\212\236\000\000\000)\000\000\000 \000\000\000[\000\001\325\015\000\001\325\036\000\001\325\055\000\000\000]";
 135     iconv_t cd;
 136     char buf[100];
 137     const char *inptr;
 138     size_t inbytesleft;
 139     char *outptr;
 140     size_t outbytesleft;
 141     size_t res;
 142     cd = iconv_open ("UTF-32BE", "UTF-8");
 143     ASSERT (cd != (iconv_t)(-1));
 144     inptr = input;
 145     inbytesleft = sizeof (input) - 1;
 146     outptr = buf;
 147     outbytesleft = sizeof (buf);
 148     res = iconv (cd,
 149                  (ICONV_CONST char **) &inptr, &inbytesleft,
 150                  &outptr, &outbytesleft);
 151     ASSERT (res == 0 && inbytesleft == 0);
 152     ASSERT (outptr == buf + (sizeof (expected) - 1));
 153     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
 154     ASSERT (iconv_close (cd) == 0);
 155   }
 156   /* Test conversion from UTF-8 to UTF-32LE with no errors.  */
 157   {
 158     static const char input[] =
 159       "Japanese (\346\227\245\346\234\254\350\252\236) [\360\235\224\215\360\235\224\236\360\235\224\255]";
 160     static const char expected[] =
 161       "J\000\000\000a\000\000\000p\000\000\000a\000\000\000n\000\000\000e\000\000\000s\000\000\000e\000\000\000 \000\000\000(\000\000\000\345\145\000\000\054\147\000\000\236\212\000\000)\000\000\000 \000\000\000[\000\000\000\015\325\001\000\036\325\001\000\055\325\001\000]\000\000\000";
 162     iconv_t cd;
 163     char buf[100];
 164     const char *inptr;
 165     size_t inbytesleft;
 166     char *outptr;
 167     size_t outbytesleft;
 168     size_t res;
 169     cd = iconv_open ("UTF-32LE", "UTF-8");
 170     ASSERT (cd != (iconv_t)(-1));
 171     inptr = input;
 172     inbytesleft = sizeof (input) - 1;
 173     outptr = buf;
 174     outbytesleft = sizeof (buf);
 175     res = iconv (cd,
 176                  (ICONV_CONST char **) &inptr, &inbytesleft,
 177                  &outptr, &outbytesleft);
 178     ASSERT (res == 0 && inbytesleft == 0);
 179     ASSERT (outptr == buf + (sizeof (expected) - 1));
 180     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
 181     ASSERT (iconv_close (cd) == 0);
 182   }
 183   /* Test conversion from UTF-16BE to UTF-8 with no errors.
 184      This test fails on NetBSD 3.0.  */
 185   {
 186     static const char input[] =
 187       "\000J\000a\000p\000a\000n\000e\000s\000e\000 \000(\145\345\147\054\212\236\000)\000 \000[\330\065\335\015\330\065\335\036\330\065\335\055\000]";
 188     static const char expected[] =
 189       "Japanese (\346\227\245\346\234\254\350\252\236) [\360\235\224\215\360\235\224\236\360\235\224\255]";
 190     iconv_t cd;
 191     char buf[100];
 192     const char *inptr;
 193     size_t inbytesleft;
 194     char *outptr;
 195     size_t outbytesleft;
 196     size_t res;
 197     cd = iconv_open ("UTF-8", "UTF-16BE");
 198     ASSERT (cd != (iconv_t)(-1));
 199     inptr = input;
 200     inbytesleft = sizeof (input) - 1;
 201     outptr = buf;
 202     outbytesleft = sizeof (buf);
 203     res = iconv (cd,
 204                  (ICONV_CONST char **) &inptr, &inbytesleft,
 205                  &outptr, &outbytesleft);
 206     ASSERT (res == 0 && inbytesleft == 0);
 207     ASSERT (outptr == buf + (sizeof (expected) - 1));
 208     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
 209     ASSERT (iconv_close (cd) == 0);
 210   }
 211   return 0;
 212 }], [gl_cv_func_iconv_supports_utf=yes], [gl_cv_func_iconv_supports_utf=no],
 213           [
 214            dnl We know that GNU libiconv, GNU libc, and Solaris >= 9 do.
 215            dnl OSF/1 5.1 has these encodings, but inserts a BOM in the "to"
 216            dnl direction.
 217            gl_cv_func_iconv_supports_utf=no
 218            if test $gl_func_iconv_gnu = yes; then
 219              gl_cv_func_iconv_supports_utf=yes
 220            else
 221 changequote(,)dnl
 222              case "$host_os" in
 223                solaris2.9 | solaris2.1[0-9]) gl_cv_func_iconv_supports_utf=yes ;;
 224              esac
 225 changequote([,])dnl
 226            fi
 227           ])
 228         LIBS="$save_LIBS"
 229       ])
 230     if test $gl_cv_func_iconv_supports_utf = no; then
 231       REPLACE_ICONV_UTF=1
 232       AC_DEFINE([REPLACE_ICONV_UTF], [1],
 233         [Define if the iconv() functions are enhanced to handle the UTF-{16,32}{BE,LE} encodings.])
 234       REPLACE_ICONV=1
 235       gl_REPLACE_ICONV_OPEN
 236       AC_LIBOBJ([iconv])
 237       AC_LIBOBJ([iconv_close])
 238     fi
 239   fi
 240 ])