/* Conversion to and from ISO 8859-1.
- Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1997-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <gconv.h>
-#include <stdlib.h>
-#include <string.h>
-
-/* Direction of the transformation. */
-enum direction
-{
- illegal,
- to_iso88591,
- from_iso88591
-};
-
-struct iso88591_data
-{
- enum direction dir;
-};
-
-
-int
-gconv_init (struct gconv_step *step)
-{
- /* Determine which direction. */
- struct iso88591_data *new_data;
- enum direction dir;
- int result;
-
- if (strcasestr (step->from_name, "ISO-8859-1") != NULL)
- dir = from_iso88591;
- else if (strcasestr (step->to_name, "ISO-8859-1") != NULL)
- dir = to_iso88591;
- else
- dir = illegal;
-
- result = GCONV_NOCONV;
- if (dir != illegal
- && ((new_data
- = (struct iso88591_data *) malloc (sizeof (struct iso88591_data)))
- != NULL))
- {
- new_data->dir = dir;
- step->data = new_data;
- result = GCONV_OK;
- }
-
- return result;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
- free (data->data);
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
- const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
- struct gconv_step *next_step = step + 1;
- struct gconv_step_data *next_data = data + 1;
- gconv_fct fct = next_step->fct;
- size_t do_write;
- int result;
-
- /* If the function is called with no input this means we have to reset
- to the initial state. The possibly partly converted input is
- dropped. */
- if (do_flush)
- {
- do_write = 0;
-
- /* Call the steps down the chain if there are any. */
- if (data->is_last)
- result = GCONV_OK;
- else
- {
- struct gconv_step *next_step = step + 1;
- struct gconv_step_data *next_data = data + 1;
-
- result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
- /* Clear output buffer. */
- data->outbufavail = 0;
- }
- }
- else
- {
- enum direction dir = ((struct iso88591_data *) step->data)->dir;
-
- do_write = 0;
-
- do
- {
- result = GCONV_OK;
-
- if (dir == from_iso88591)
- {
- size_t inchars = *inbufsize;
- size_t outwchars = data->outbufavail;
- char *outbuf = data->outbuf;
- size_t cnt = 0;
-
- while (cnt < inchars
- && (outwchars + sizeof (wchar_t) <= data->outbufsize))
- {
- *((wchar_t *) (outbuf + outwchars)) =
- (unsigned char) inbuf[cnt];
- ++do_write;
- outwchars += sizeof (wchar_t);
- ++cnt;
- }
- *inbufsize -= cnt;
- data->outbufavail = outwchars;
- }
- else
- {
- size_t inwchars = *inbufsize;
- size_t outchars = data->outbufavail;
- char *outbuf = data->outbuf;
- size_t cnt = 0;
-
- while (inwchars >= cnt + sizeof (wchar_t)
- && outchars < data->outbufsize)
- {
- if (*((wchar_t *) (inbuf + cnt)) >= L'\0'
- && *((wchar_t *) (inbuf + cnt)) <= L'\377')
- outbuf[outchars] = *((wchar_t *) (inbuf + cnt));
- else
- /* Here is where the transliteration would enter the
- scene. */
- break;
-
- ++do_write;
- ++outchars;
- cnt += sizeof (wchar_t);
- }
- *inbufsize -= cnt;
- data->outbufavail = outchars;
-
- if (outchars < data->outbufsize)
- {
- /* If there is still room in the output buffer something
- is wrong with the input. */
- if (inwchars >= cnt + sizeof (wchar_t))
- {
- /* An error occurred. */
- result = GCONV_ILLEGAL_INPUT;
- break;
- }
- if (inwchars != cnt)
- {
- /* There are some unprocessed bytes at the end of the
- input buffer. */
- result = GCONV_INCOMPLETE_INPUT;
- break;
- }
- }
- }
-
- if (result != GCONV_OK)
- break;
-
- if (data->is_last)
- {
- /* This is the last step. */
- result = (*inbufsize > (dir == from_iso88591
- ? 0 : sizeof (wchar_t) - 1)
- ? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
- break;
- }
-
- /* Status so far. */
- result = GCONV_EMPTY_INPUT;
-
- if (data->outbufavail > 0)
- {
- /* Call the functions below in the chain. */
- size_t newavail = data->outbufavail;
-
- result = (*fct) (next_step, next_data, data->outbuf, &newavail,
- written, 0);
-
- /* Correct the output buffer. */
- if (newavail != data->outbufavail && newavail > 0)
- {
- memmove (data->outbuf,
- &data->outbuf[data->outbufavail - newavail],
- newavail);
- data->outbufavail = newavail;
- }
- }
- }
- while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
- }
-
- if (written != NULL && data->is_last)
- *written = do_write;
-
- return result;
-}
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <dlfcn.h>
+#include <stdint.h>
+
+/* Definitions used in the body of the `gconv' function. */
+#define CHARSET_NAME "ISO-8859-1//"
+#define FROM_LOOP from_iso8859_1
+#define TO_LOOP to_iso8859_1
+#define DEFINE_INIT 1
+#define DEFINE_FINI 1
+#define MIN_NEEDED_FROM 1
+#define MIN_NEEDED_TO 4
+#define ONE_DIRECTION 0
+
+/* First define the conversion function from ISO 8859-1 to UCS4. */
+#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
+#define LOOPFCT FROM_LOOP
+#define BODY \
+ *((uint32_t *) outptr) = *inptr++; \
+ outptr += sizeof (uint32_t);
+#define ONEBYTE_BODY \
+ { \
+ return c; \
+ }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction. */
+#define MIN_NEEDED_INPUT MIN_NEEDED_TO
+#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
+#define LOOPFCT TO_LOOP
+#define BODY \
+ { \
+ uint32_t ch = *((const uint32_t *) inptr); \
+ if (__glibc_unlikely (ch > 0xff)) \
+ { \
+ UNICODE_TAG_HANDLER (ch, 4); \
+ \
+ /* We have an illegal character. */ \
+ STANDARD_TO_LOOP_ERR_HANDLER (4); \
+ } \
+ else \
+ *outptr++ = (unsigned char) ch; \
+ inptr += 4; \
+ }
+#define LOOP_NEED_FLAGS
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions. */
+#include <iconv/skeleton.c>
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