1# iconv_open.m4 serial 7
2dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_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
42AC_DEFUN([gl_REPLACE_ICONV_OPEN],
43[
44  gl_REPLACE_ICONV_H
45  REPLACE_ICONV_OPEN=1
46  AC_LIBOBJ([iconv_open])
47])
48
49AC_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;
73int 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 $gl_func_iconv_gnu = yes; then
219             gl_cv_func_iconv_supports_utf=yes
220           else
221changequote(,)dnl
222             case "$host_os" in
223               solaris2.9 | solaris2.1[0-9]) gl_cv_func_iconv_supports_utf=yes ;;
224             esac
225changequote([,])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])
241