/**
* Convert the len characters long character sequence
* given in input that is in the given input charset
* to a string in given output charset.
*
* @param input input string
* @param len number of bytes in @a input
* @param input_charset character set used for @a input
* @param output_charset desired character set for the return value
* @return the converted string (0-terminated),
* if conversion fails, a copy of the orignal
* string is returned.
*/
char *
GNUNET_STRINGS_conv (const char *input,
size_t len,
const char *input_charset,
const char *output_charset)
{
char *ret;
uint8_t *u8_string;
char *encoded_string;
size_t u8_string_length;
size_t encoded_string_length;
u8_string = u8_conv_from_encoding (input_charset,
iconveh_error,
input, len,
NULL, NULL,
&u8_string_length);
if (NULL == u8_string)
{
LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "u8_conv_from_encoding");
goto fail;
}
if (0 == strcmp (output_charset, "UTF-8"))
{
ret = GNUNET_malloc (u8_string_length + 1);
memcpy (ret, u8_string, u8_string_length);
ret[u8_string_length] = '\0';
free (u8_string);
return ret;
}
encoded_string = u8_conv_to_encoding (output_charset, iconveh_error,
u8_string, u8_string_length,
NULL, NULL,
&encoded_string_length);
free (u8_string);
if (NULL == encoded_string)
{
LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "u8_conv_to_encoding");
goto fail;
}
ret = GNUNET_malloc (encoded_string_length + 1);
memcpy (ret, encoded_string, encoded_string_length);
ret[encoded_string_length] = '\0';
free (encoded_string);
return ret;
fail:
LOG (GNUNET_ERROR_TYPE_WARNING, _("Character sets requested were `%s'->`%s'\n"),
"UTF-8", output_charset);
ret = GNUNET_malloc (len + 1);
memcpy (ret, input, len);
ret[len] = '\0';
return ret;
}
int
main ()
{
static enum iconv_ilseq_handler handlers[] =
{ iconveh_error, iconveh_question_mark, iconveh_escape_sequence };
size_t h;
size_t o;
size_t i;
#if HAVE_ICONV
/* Assume that iconv() supports at least the encodings ASCII, ISO-8859-1,
ISO-8859-2, and UTF-8. */
/* Test conversion from UTF-8 to ISO-8859-1 with no errors. */
for (h = 0; h < SIZEOF (handlers); h++)
{
enum iconv_ilseq_handler handler = handlers[h];
static const uint8_t input[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
static const char expected[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
for (o = 0; o < 2; o++)
{
size_t *offsets = (o ? new_offsets (u8_strlen (input)) : NULL);
size_t length;
char *result = u8_conv_to_encoding ("ISO-8859-1", handler,
input, u8_strlen (input),
offsets,
NULL, &length);
ASSERT (result != NULL);
ASSERT (length == strlen (expected));
ASSERT (memcmp (result, expected, length) == 0);
if (o)
{
for (i = 0; i < 41; i++)
ASSERT (offsets[i] == (i < 1 ? i :
i == 1 ? (size_t)(-1) :
i < 13 ? i - 1 :
i == 13 ? (size_t)(-1) :
i < 20 ? i - 2 :
i == 20 ? (size_t)(-1) :
i < 40 ? i - 3 :
i == 40 ? (size_t)(-1) :
i - 4));
ASSERT (offsets[41] == MAGIC);
free (offsets);
}
free (result);
}
}
/* Test conversion from UTF-8 to ISO-8859-1 with EILSEQ. */
for (h = 0; h < SIZEOF (handlers); h++)
{
enum iconv_ilseq_handler handler = handlers[h];
static const uint8_t input[] = "Rafa\305\202 Maszkowski"; /* Rafał Maszkowski */
for (o = 0; o < 2; o++)
{
size_t *offsets = (o ? new_offsets (u8_strlen (input)) : NULL);
size_t length = 0xdead;
char *result = u8_conv_to_encoding ("ISO-8859-1", handler,
input, u8_strlen (input),
offsets,
NULL, &length);
switch (handler)
{
case iconveh_error:
ASSERT (result == NULL);
ASSERT (errno == EILSEQ);
ASSERT (length == 0xdead);
break;
case iconveh_question_mark:
{
static const char expected[] = "Rafa? Maszkowski";
static const char expected_translit[] = "Rafal Maszkowski";
ASSERT (result != NULL);
ASSERT (length == strlen (expected));
ASSERT (memcmp (result, expected, length) == 0
|| memcmp (result, expected_translit, length) == 0);
if (o)
{
for (i = 0; i < 17; i++)
ASSERT (offsets[i] == (i < 5 ? i :
i == 5 ? (size_t)(-1) :
i - 1));
ASSERT (offsets[17] == MAGIC);
free (offsets);
}
free (result);
}
break;
case iconveh_escape_sequence:
{
static const char expected[] = "Rafa\\u0142 Maszkowski";
ASSERT (result != NULL);
ASSERT (length == strlen (expected));
ASSERT (memcmp (result, expected, length) == 0);
if (o)
{
for (i = 0; i < 17; i++)
ASSERT (offsets[i] == (i < 5 ? i :
i == 5 ? (size_t)(-1) :
i + 4));
ASSERT (offsets[17] == MAGIC);
free (offsets);
}
free (result);
}
break;
}
}
}
/* Test conversion from UTF-8 to ISO-8859-1 with EINVAL. */
for (h = 0; h < SIZEOF (handlers); h++)
{
enum iconv_ilseq_handler handler = handlers[h];
static const uint8_t input[] = "\342";
for (o = 0; o < 2; o++)
{
size_t *offsets = (o ? new_offsets (u8_strlen (input)) : NULL);
size_t length;
char *result = u8_conv_to_encoding ("ISO-8859-1", handler,
input, u8_strlen (input),
offsets,
NULL, &length);
ASSERT (result != NULL);
ASSERT (length == strlen (""));
if (o)
{
ASSERT (offsets[0] == 0);
ASSERT (offsets[1] == MAGIC);
free (offsets);
}
free (result);
}
}
#endif
return 0;
}
