#endif
+int
+mem_iconveh (const char *src, size_t srclen,
+ const char *from_codeset, const char *to_codeset,
+ enum iconv_ilseq_handler handler,
+ char **resultp, size_t *lengthp)
+{
+ if (c_strcasecmp (from_codeset, to_codeset) == 0)
+ {
+ char *result;
+
+ if (*resultp != NULL && *lengthp >= srclen)
+ result = *resultp;
+ else
+ {
+ result = (char *) malloc (srclen);
+ if (result == NULL)
+ {
+ errno = ENOMEM;
+ return -1;
+ }
+ }
+ memcpy (result, src, srclen);
+ *resultp = result;
+ *lengthp = srclen;
+ return 0;
+ }
+ else
+ {
+#if HAVE_ICONV
+ iconv_t cd;
+ iconv_t cd1;
+ iconv_t cd2;
+ char *result;
+ size_t length;
+ int retval;
+
+ /* Avoid glibc-2.1 bug with EUC-KR. */
+# if (__GLIBC__ - 0 == 2 && __GLIBC_MINOR__ - 0 <= 1) && !defined _LIBICONV_VERSION
+ if (c_strcasecmp (from_codeset, "EUC-KR") == 0
+ || c_strcasecmp (to_codeset, "EUC-KR") == 0)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+# endif
+
+ cd = iconv_open (to_codeset, from_codeset);
+ if (cd == (iconv_t)(-1))
+ return -1;
+
+ if (c_strcasecmp (from_codeset, "UTF-8") == 0)
+ cd1 = (iconv_t)(-1);
+ else
+ {
+ cd1 = iconv_open ("UTF-8", from_codeset);
+ if (cd1 == (iconv_t)(-1))
+ {
+ int saved_errno = errno;
+ iconv_close (cd);
+ errno = saved_errno;
+ return -1;
+ }
+ }
+
+ if (c_strcasecmp (to_codeset, "UTF-8") == 0)
+ cd2 = (iconv_t)(-1);
+ else
+ {
+ cd2 = iconv_open (to_codeset, "UTF-8");
+ if (cd2 == (iconv_t)(-1))
+ {
+ int saved_errno = errno;
+ if (cd1 != (iconv_t)(-1))
+ iconv_close (cd1);
+ iconv_close (cd);
+ errno = saved_errno;
+ return -1;
+ }
+ }
+
+ result = *resultp;
+ length = *lengthp;
+ retval =
+ mem_cd_iconveh (src, srclen, cd, cd1, cd2, handler, &result, &length);
+
+ if (retval < 0)
+ {
+ /* Close cd, cd1, cd2, but preserve the errno from str_cd_iconv. */
+ int saved_errno = errno;
+ if (cd2 != (iconv_t)(-1))
+ iconv_close (cd2);
+ if (cd1 != (iconv_t)(-1))
+ iconv_close (cd1);
+ iconv_close (cd);
+ errno = saved_errno;
+ }
+ else
+ {
+ if (cd2 != (iconv_t)(-1) && iconv_close (cd2) < 0)
+ {
+ /* Return -1, but free the allocated memory, and while doing
+ that, preserve the errno from iconv_close. */
+ int saved_errno = errno;
+ if (cd1 != (iconv_t)(-1))
+ iconv_close (cd1);
+ iconv_close (cd);
+ if (result != *resultp && result != NULL)
+ free (result);
+ errno = saved_errno;
+ return -1;
+ }
+ if (cd1 != (iconv_t)(-1) && iconv_close (cd1) < 0)
+ {
+ /* Return -1, but free the allocated memory, and while doing
+ that, preserve the errno from iconv_close. */
+ int saved_errno = errno;
+ iconv_close (cd);
+ if (result != *resultp && result != NULL)
+ free (result);
+ errno = saved_errno;
+ return -1;
+ }
+ if (iconv_close (cd) < 0)
+ {
+ /* Return -1, but free the allocated memory, and while doing
+ that, preserve the errno from iconv_close. */
+ int saved_errno = errno;
+ if (result != *resultp && result != NULL)
+ free (result);
+ errno = saved_errno;
+ return -1;
+ }
+ *resultp = result;
+ *lengthp = length;
+ }
+ return retval;
+#else
+ /* This is a different error code than if iconv_open existed but didn't
+ support from_codeset and to_codeset, so that the caller can emit
+ an error message such as
+ "iconv() is not supported. Installing GNU libiconv and
+ then reinstalling this package would fix this." */
+ errno = ENOSYS;
+ return -1;
+#endif
+ }
+}
+
char *
str_iconveh (const char *src,
const char *from_codeset, const char *to_codeset,
#endif
/* Convert an entire string from one encoding to another, using iconv.
+ The original string is at [SRC,...,SRC+SRCLEN-1].
+ Both the "from" and the "to" encoding must use a single NUL byte at the
+ end of the string (i.e. not UCS-2, UCS-4, UTF-16, UTF-32).
+ *RESULTP and *LENGTH should initially be a scratch buffer and its size,
+ or *RESULTP can initially be NULL.
+ May erase the contents of the memory at *RESULTP.
+ Return value: 0 if successful, otherwise -1 and errno set.
+ If successful: The resulting string is stored in *RESULTP and its length
+ in *LENGTHP. *RESULTP is set to a freshly allocated memory block, or is
+ unchanged if no dynamic memory allocation was necessary. */
+extern int
+ mem_iconveh (const char *src, size_t srclen,
+ const char *from_codeset, const char *to_codeset,
+ enum iconv_ilseq_handler handler,
+ char **resultp, size_t *lengthp);
+
+/* Convert an entire string from one encoding to another, using iconv.
The original string is the NUL-terminated string starting at SRC.
Both the "from" and the "to" encoding must use a single NUL byte at the
end of the string (i.e. not UCS-2, UCS-4, UTF-16, UTF-32).
iconv_close (cd_88592_to_utf8);
iconv_close (cd_utf8_to_88592);
+ /* ------------------------- Test mem_iconveh() ------------------------- */
+
+ /* Test conversion from ISO-8859-2 to ISO-8859-1 with no errors. */
+ for (h = 0; h < SIZEOF (handlers); h++)
+ {
+ enum iconv_ilseq_handler handler = handlers[h];
+ static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+ static const char expected[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+ char *result = NULL;
+ size_t length = 0;
+ int retval = mem_iconveh (input, strlen (input),
+ "ISO-8859-2", "ISO-8859-1",
+ handler,
+ &result, &length);
+ ASSERT (retval == 0);
+ ASSERT (length == strlen (expected));
+ ASSERT (result != NULL && memcmp (result, expected, strlen (expected)) == 0);
+ free (result);
+ }
+
+ /* Test conversion from ISO-8859-2 to ISO-8859-1 with EILSEQ. */
+ for (h = 0; h < SIZEOF (handlers); h++)
+ {
+ enum iconv_ilseq_handler handler = handlers[h];
+ static const char input[] = "Rafa\263 Maszkowski"; /* Rafał Maszkowski */
+ char *result = NULL;
+ size_t length = 0;
+ int retval = mem_iconveh (input, strlen (input),
+ "ISO-8859-2", "ISO-8859-1",
+ handler,
+ &result, &length);
+ switch (handler)
+ {
+ case iconveh_error:
+ ASSERT (retval == -1 && errno == EILSEQ);
+ ASSERT (result == NULL);
+ break;
+ case iconveh_question_mark:
+ {
+ static const char expected[] = "Rafa? Maszkowski";
+ ASSERT (retval == 0);
+ ASSERT (length == strlen (expected));
+ ASSERT (result != NULL && memcmp (result, expected, strlen (expected)) == 0);
+ free (result);
+ }
+ break;
+ case iconveh_escape_sequence:
+ {
+ static const char expected[] = "Rafa\\u0142 Maszkowski";
+ ASSERT (retval == 0);
+ ASSERT (length == strlen (expected));
+ ASSERT (result != NULL && memcmp (result, expected, strlen (expected)) == 0);
+ free (result);
+ }
+ break;
+ }
+ }
+
+ /* Test conversion from ISO-8859-1 to UTF-8 with no errors. */
+ for (h = 0; h < SIZEOF (handlers); h++)
+ {
+ enum iconv_ilseq_handler handler = handlers[h];
+ static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+ static const char expected[] = "\303\204rger mit b\303\266sen B\303\274bchen ohne Augenma\303\237";
+ char *result = NULL;
+ size_t length = 0;
+ int retval = mem_iconveh (input, strlen (input),
+ "ISO-8859-1", "UTF-8",
+ handler,
+ &result, &length);
+ ASSERT (retval == 0);
+ ASSERT (length == strlen (expected));
+ ASSERT (result != NULL && memcmp (result, expected, strlen (expected)) == 0);
+ free (result);
+ }
+
+ /* 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 char 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";
+ char *result = NULL;
+ size_t length = 0;
+ int retval = mem_iconveh (input, strlen (input),
+ "UTF-8", "ISO-8859-1",
+ handler,
+ &result, &length);
+ ASSERT (retval == 0);
+ ASSERT (length == strlen (expected));
+ ASSERT (result != NULL && memcmp (result, expected, strlen (expected)) == 0);
+ 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 char input[] = "Rafa\305\202 Maszkowski"; /* Rafał Maszkowski */
+ char *result = NULL;
+ size_t length = 0;
+ int retval = mem_iconveh (input, strlen (input),
+ "UTF-8", "ISO-8859-1",
+ handler,
+ &result, &length);
+ switch (handler)
+ {
+ case iconveh_error:
+ ASSERT (retval == -1 && errno == EILSEQ);
+ ASSERT (result == NULL);
+ break;
+ case iconveh_question_mark:
+ {
+ static const char expected[] = "Rafa? Maszkowski";
+ ASSERT (retval == 0);
+ ASSERT (length == strlen (expected));
+ ASSERT (result != NULL && memcmp (result, expected, strlen (expected)) == 0);
+ free (result);
+ }
+ break;
+ case iconveh_escape_sequence:
+ {
+ static const char expected[] = "Rafa\\u0142 Maszkowski";
+ ASSERT (retval == 0);
+ ASSERT (length == strlen (expected));
+ ASSERT (result != NULL && memcmp (result, expected, strlen (expected)) == 0);
+ 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 char input[] = "\342";
+ char *result = NULL;
+ size_t length = 0;
+ int retval = mem_iconveh (input, strlen (input),
+ "UTF-8", "ISO-8859-1",
+ handler,
+ &result, &length);
+ ASSERT (retval == 0);
+ ASSERT (length == 0);
+ if (result != NULL)
+ free (result);
+ }
+
/* ------------------------- Test str_iconveh() ------------------------- */
/* Test conversion from ISO-8859-2 to ISO-8859-1 with no errors. */
projects / gnulib.git / commitdiff