m4/iconv_open.m4

   1 # iconv_open.m4 serial 5
   2 dnl Copyright (C) 2007-2009 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 Test whether iconv_open accepts standardized encoding names.
  14     dnl We know that GNU libiconv and GNU libc do.
  15     AC_EGREP_CPP([gnu_iconv], [
  16       #include <iconv.h>
  17       #if defined _LIBICONV_VERSION || defined __GLIBC__
  18        gnu_iconv
  19       #endif
  20       ], [gl_func_iconv_gnu=yes], [gl_func_iconv_gnu=no])
  21     if test $gl_func_iconv_gnu = no; then
  22       iconv_flavor=
  23       case "$host_os" in
  24         aix*)  iconv_flavor=ICONV_FLAVOR_AIX ;;
  25         irix*) iconv_flavor=ICONV_FLAVOR_IRIX ;;
  26         hpux*) iconv_flavor=ICONV_FLAVOR_HPUX ;;
  27         osf*)  iconv_flavor=ICONV_FLAVOR_OSF ;;
  28       esac
  29       if test -n "$iconv_flavor"; then
  30         AC_DEFINE_UNQUOTED([ICONV_FLAVOR], [$iconv_flavor],
  31           [Define to a symbolic name denoting the flavor of iconv_open()
  32            implementation.])
  33         gl_REPLACE_ICONV_OPEN
  34       fi
  35     fi
  36   fi
  37 ])
  38
  39 AC_DEFUN([gl_REPLACE_ICONV_OPEN],
  40 [
  41   gl_REPLACE_ICONV_H
  42   REPLACE_ICONV_OPEN=1
  43   AC_LIBOBJ([iconv_open])
  44 ])
  45
  46 AC_DEFUN([gl_FUNC_ICONV_OPEN_UTF],
  47 [
  48   AC_REQUIRE([gl_FUNC_ICONV_OPEN])
  49   AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
  50   AC_REQUIRE([gl_ICONV_H_DEFAULTS])
  51   if test "$am_cv_func_iconv" = yes; then
  52     if test -n "$am_cv_proto_iconv_arg1"; then
  53       ICONV_CONST="const"
  54     else
  55       ICONV_CONST=
  56     fi
  57     AC_SUBST([ICONV_CONST])
  58     AC_CACHE_CHECK([whether iconv supports conversion between UTF-8 and UTF-{16,32}{BE,LE}],
  59       [gl_cv_func_iconv_supports_utf],
  60       [
  61         save_LIBS="$LIBS"
  62         LIBS="$LIBS $LIBICONV"
  63         AC_TRY_RUN([
  64 #include <iconv.h>
  65 #include <errno.h>
  66 #include <stdio.h>
  67 #include <stdlib.h>
  68 #include <string.h>
  69 #define ASSERT(expr) if (!(expr)) return 1;
  70 int main ()
  71 {
  72   /* Test conversion from UTF-8 to UTF-16BE with no errors.  */
  73   {
  74     static const char input[] =
  75       "Japanese (\346\227\245\346\234\254\350\252\236) [\360\235\224\215\360\235\224\236\360\235\224\255]";
  76     static const char expected[] =
  77       "\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]";
  78     iconv_t cd;
  79     char buf[100];
  80     const char *inptr;
  81     size_t inbytesleft;
  82     char *outptr;
  83     size_t outbytesleft;
  84     size_t res;
  85     cd = iconv_open ("UTF-16BE", "UTF-8");
  86     ASSERT (cd != (iconv_t)(-1));
  87     inptr = input;
  88     inbytesleft = sizeof (input) - 1;
  89     outptr = buf;
  90     outbytesleft = sizeof (buf);
  91     res = iconv (cd,
  92                  (ICONV_CONST char **) &inptr, &inbytesleft,
  93                  &outptr, &outbytesleft);
  94     ASSERT (res == 0 && inbytesleft == 0);
  95     ASSERT (outptr == buf + (sizeof (expected) - 1));
  96     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
  97     ASSERT (iconv_close (cd) == 0);
  98   }
  99   /* Test conversion from UTF-8 to UTF-16LE with no errors.  */
 100   {
 101     static const char input[] =
 102       "Japanese (\346\227\245\346\234\254\350\252\236) [\360\235\224\215\360\235\224\236\360\235\224\255]";
 103     static const char expected[] =
 104       "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";
 105     iconv_t cd;
 106     char buf[100];
 107     const char *inptr;
 108     size_t inbytesleft;
 109     char *outptr;
 110     size_t outbytesleft;
 111     size_t res;
 112     cd = iconv_open ("UTF-16LE", "UTF-8");
 113     ASSERT (cd != (iconv_t)(-1));
 114     inptr = input;
 115     inbytesleft = sizeof (input) - 1;
 116     outptr = buf;
 117     outbytesleft = sizeof (buf);
 118     res = iconv (cd,
 119                  (ICONV_CONST char **) &inptr, &inbytesleft,
 120                  &outptr, &outbytesleft);
 121     ASSERT (res == 0 && inbytesleft == 0);
 122     ASSERT (outptr == buf + (sizeof (expected) - 1));
 123     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
 124     ASSERT (iconv_close (cd) == 0);
 125   }
 126   /* Test conversion from UTF-8 to UTF-32BE with no errors.  */
 127   {
 128     static const char input[] =
 129       "Japanese (\346\227\245\346\234\254\350\252\236) [\360\235\224\215\360\235\224\236\360\235\224\255]";
 130     static const char expected[] =
 131       "\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]";
 132     iconv_t cd;
 133     char buf[100];
 134     const char *inptr;
 135     size_t inbytesleft;
 136     char *outptr;
 137     size_t outbytesleft;
 138     size_t res;
 139     cd = iconv_open ("UTF-32BE", "UTF-8");
 140     ASSERT (cd != (iconv_t)(-1));
 141     inptr = input;
 142     inbytesleft = sizeof (input) - 1;
 143     outptr = buf;
 144     outbytesleft = sizeof (buf);
 145     res = iconv (cd,
 146                  (ICONV_CONST char **) &inptr, &inbytesleft,
 147                  &outptr, &outbytesleft);
 148     ASSERT (res == 0 && inbytesleft == 0);
 149     ASSERT (outptr == buf + (sizeof (expected) - 1));
 150     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
 151     ASSERT (iconv_close (cd) == 0);
 152   }
 153   /* Test conversion from UTF-8 to UTF-32LE with no errors.  */
 154   {
 155     static const char input[] =
 156       "Japanese (\346\227\245\346\234\254\350\252\236) [\360\235\224\215\360\235\224\236\360\235\224\255]";
 157     static const char expected[] =
 158       "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";
 159     iconv_t cd;
 160     char buf[100];
 161     const char *inptr;
 162     size_t inbytesleft;
 163     char *outptr;
 164     size_t outbytesleft;
 165     size_t res;
 166     cd = iconv_open ("UTF-32LE", "UTF-8");
 167     ASSERT (cd != (iconv_t)(-1));
 168     inptr = input;
 169     inbytesleft = sizeof (input) - 1;
 170     outptr = buf;
 171     outbytesleft = sizeof (buf);
 172     res = iconv (cd,
 173                  (ICONV_CONST char **) &inptr, &inbytesleft,
 174                  &outptr, &outbytesleft);
 175     ASSERT (res == 0 && inbytesleft == 0);
 176     ASSERT (outptr == buf + (sizeof (expected) - 1));
 177     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
 178     ASSERT (iconv_close (cd) == 0);
 179   }
 180   /* Test conversion from UTF-16BE to UTF-8 with no errors.
 181      This test fails on NetBSD 3.0.  */
 182   {
 183     static const char input[] =
 184       "\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]";
 185     static const char expected[] =
 186       "Japanese (\346\227\245\346\234\254\350\252\236) [\360\235\224\215\360\235\224\236\360\235\224\255]";
 187     iconv_t cd;
 188     char buf[100];
 189     const char *inptr;
 190     size_t inbytesleft;
 191     char *outptr;
 192     size_t outbytesleft;
 193     size_t res;
 194     cd = iconv_open ("UTF-8", "UTF-16BE");
 195     ASSERT (cd != (iconv_t)(-1));
 196     inptr = input;
 197     inbytesleft = sizeof (input) - 1;
 198     outptr = buf;
 199     outbytesleft = sizeof (buf);
 200     res = iconv (cd,
 201                  (ICONV_CONST char **) &inptr, &inbytesleft,
 202                  &outptr, &outbytesleft);
 203     ASSERT (res == 0 && inbytesleft == 0);
 204     ASSERT (outptr == buf + (sizeof (expected) - 1));
 205     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
 206     ASSERT (iconv_close (cd) == 0);
 207   }
 208   return 0;
 209 }], [gl_cv_func_iconv_supports_utf=yes], [gl_cv_func_iconv_supports_utf=no],
 210           [
 211            dnl We know that GNU libiconv, GNU libc, and Solaris >= 9 do.
 212            dnl OSF/1 5.1 has these encodings, but inserts a BOM in the "to"
 213            dnl direction.
 214            gl_cv_func_iconv_supports_utf=no
 215            if test $gl_func_iconv_gnu = yes; then
 216              gl_cv_func_iconv_supports_utf=yes
 217            else
 218 changequote(,)dnl
 219              case "$host_os" in
 220                solaris2.9 | solaris2.1[0-9]) gl_cv_func_iconv_supports_utf=yes ;;
 221              esac
 222 changequote([,])dnl
 223            fi
 224           ])
 225         LIBS="$save_LIBS"
 226       ])
 227     if test $gl_cv_func_iconv_supports_utf = no; then
 228       REPLACE_ICONV_UTF=1
 229       AC_DEFINE([REPLACE_ICONV_UTF], [1],
 230         [Define if the iconv() functions are enhanced to handle the UTF-{16,32}{BE,LE} encodings.])
 231       REPLACE_ICONV=1
 232       gl_REPLACE_ICONV_OPEN
 233       AC_LIBOBJ([iconv])
 234       AC_LIBOBJ([iconv_close])
 235     fi
 236   fi
 237 ])