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-rw-r--r--newlib/libc/iconv/lib/ucsconv.c356
1 files changed, 356 insertions, 0 deletions
diff --git a/newlib/libc/iconv/lib/ucsconv.c b/newlib/libc/iconv/lib/ucsconv.c
new file mode 100644
index 000000000..4dab2e19d
--- /dev/null
+++ b/newlib/libc/iconv/lib/ucsconv.c
@@ -0,0 +1,356 @@
+/*
+ * Copyright (c) 2003-2004, Artem B. Bityuckiy
+ * Copyright (c) 1999,2000, Konstantin Chuguev. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <_ansi.h>
+#include <reent.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include "local.h"
+#include "conv.h"
+#include "ucsconv.h"
+
+static int fake_data;
+
+static int
+_EXFUN(find_encoding_name, (_CONST char *searchee,
+ _CONST char **names));
+
+
+/*
+ * UCS-based conversion interface functions implementation.
+ */
+
+static _VOID_PTR
+_DEFUN(ucs_based_conversion_open, (rptr, to, from),
+ struct _reent *rptr _AND
+ _CONST char *to _AND
+ _CONST char *from)
+{
+ iconv_ucs_conversion_t *uc;
+ _CONST iconv_to_ucs_ces_t *to_ucs_bices;
+ _CONST iconv_from_ucs_ces_t *from_ucs_bices;
+
+ uc = (iconv_ucs_conversion_t *)
+ _calloc_r (rptr, 1, sizeof (iconv_ucs_conversion_t));
+ if (uc == NULL)
+ return NULL;
+
+ /*
+ * Find CES converter for "from" encoding ("from" source encoding corresponds
+ * to "to_ucs" CES converter).
+ */
+ for (to_ucs_bices = &_iconv_to_ucs_ces[0];
+ to_ucs_bices->names != NULL;
+ to_ucs_bices++)
+ {
+ if (find_encoding_name (from, to_ucs_bices->names) == 0)
+ break;
+ }
+
+ /*
+ * Find CES converter for "to" encoding ("to" source encoding corresponds
+ * to "from_ucs" CES converter).
+ */
+ for (from_ucs_bices = &_iconv_from_ucs_ces[0];
+ from_ucs_bices->names != NULL;
+ from_ucs_bices++)
+ {
+ if (find_encoding_name (to, from_ucs_bices->names) == 0)
+ break;
+ }
+
+ if (to_ucs_bices->names == NULL || from_ucs_bices->names == NULL)
+ goto error;
+
+ uc->to_ucs.handlers = to_ucs_bices->handlers;
+ uc->from_ucs.handlers = from_ucs_bices->handlers;
+
+ /* Initialize "to UCS" CES converter */
+ if (to_ucs_bices->handlers->init != NULL)
+ {
+ uc->to_ucs.data = to_ucs_bices->handlers->init (rptr, from);
+ if (uc->to_ucs.data == NULL)
+ goto error;
+ }
+ else
+ uc->to_ucs.data = (_VOID_PTR)&fake_data;
+
+
+ /* Initialize "from UCS" CES converter */
+ if (from_ucs_bices->handlers->init != NULL)
+ {
+ uc->from_ucs.data = from_ucs_bices->handlers->init (rptr, to);
+ if (uc->from_ucs.data == NULL)
+ goto error;
+ }
+ else
+ uc->from_ucs.data = (_VOID_PTR)&fake_data;
+
+ return uc;
+
+error:
+ if (uc->to_ucs.data != NULL && uc->to_ucs.handlers->close != NULL)
+ uc->to_ucs.handlers->close (rptr, uc->to_ucs.data);
+
+ _free_r (rptr, (_VOID_PTR)uc);
+
+ return NULL;
+}
+
+
+static size_t
+_DEFUN(ucs_based_conversion_close, (rptr, data),
+ struct _reent *rptr _AND
+ _VOID_PTR data)
+{
+ iconv_ucs_conversion_t *uc;
+ size_t res = 0;
+
+ uc = (iconv_ucs_conversion_t *)data;
+
+ if (uc->from_ucs.handlers->close != NULL)
+ res = uc->from_ucs.handlers->close (rptr, uc->from_ucs.data);
+ if (uc->to_ucs.handlers->close != NULL)
+ res |= uc->to_ucs.handlers->close (rptr, uc->to_ucs.data);
+
+ _free_r (rptr, (_VOID_PTR)data);
+
+ return res;
+}
+
+
+static size_t
+_DEFUN(ucs_based_conversion_convert,
+ (rptr, data, inbuf, inbytesleft, outbuf, outbytesleft, flags),
+ struct _reent *rptr _AND
+ _VOID_PTR data _AND
+ _CONST unsigned char **inbuf _AND
+ size_t *inbytesleft _AND
+ unsigned char **outbuf _AND
+ size_t *outbytesleft _AND
+ int flags)
+{
+ unsigned char outbuf1[ICONV_MB_LEN_MAX];
+ unsigned char *poutbuf1;
+ size_t res = 0;
+ iconv_ucs_conversion_t *uc = (iconv_ucs_conversion_t *)data;
+
+ while (*inbytesleft > 0)
+ {
+ register size_t bytes;
+ register ucs4_t ch;
+ _CONST unsigned char *inbuf_save = *inbuf;
+ size_t inbyteslef_save = *inbytesleft;
+
+ if (*outbytesleft == 0)
+ {
+ __errno_r (rptr) = E2BIG;
+ return (size_t)-1;
+ }
+
+ ch = uc->to_ucs.handlers->convert_to_ucs (uc->to_ucs.data,
+ inbuf, inbytesleft);
+
+ if (ch == (ucs4_t)ICONV_CES_BAD_SEQUENCE)
+ {
+ __errno_r (rptr) = EINVAL;
+ return (size_t)-1;
+ }
+
+ if (ch == (ucs4_t)ICONV_CES_INVALID_CHARACTER)
+ {
+ __errno_r (rptr) = EILSEQ;
+ return (size_t)-1;
+ }
+
+ if (flags & ICONV_DONT_SAVE_BIT)
+ {
+ poutbuf1 = &outbuf1[0];
+ outbuf = &poutbuf1;
+ }
+
+ bytes = uc->from_ucs.handlers->convert_from_ucs (uc->from_ucs.data, ch,
+ outbuf, outbytesleft);
+
+ if (bytes == (size_t)ICONV_CES_NOSPACE)
+ {
+ *inbuf = inbuf_save;
+ *inbytesleft = inbyteslef_save;
+ __errno_r (rptr) = E2BIG;
+ return (size_t)-1;
+ }
+ else if (bytes == (size_t)ICONV_CES_INVALID_CHARACTER)
+ {
+ if (flags & ICONV_FAIL_BIT)
+ {
+ /* Generate error */
+ __errno_r (rptr) = EILSEQ;
+ return (size_t)-1;
+ }
+ /*
+ * For this case SUSv3 stands: "if iconv() encounters a character in the
+ * input buffer that is valid, but for which an identical character does
+ * not exist in the target encoding, iconv() shall perform an
+ * implementation-defined conversion on this character".
+ * Don't generate error, just write default character.
+ */
+ bytes = uc->from_ucs.handlers->convert_from_ucs (
+ uc->from_ucs.data,
+ (ucs4_t)DEFAULT_CHARACTER,
+ outbuf,
+ outbytesleft);
+ if ((__int32_t)bytes < 0)
+ {
+ __errno_r (rptr) = E2BIG;
+ return (size_t)-1;
+ }
+
+ res += 1;
+ }
+ }
+
+ return res;
+}
+
+
+static int
+_DEFUN(ucs_based_conversion_get_mb_cur_max, (data, direction),
+ _VOID_PTR data _AND
+ int direction)
+{
+ iconv_ucs_conversion_t *uc = (iconv_ucs_conversion_t *)data;
+
+ if (direction == 0)
+ return uc->to_ucs.handlers->get_mb_cur_max (uc->to_ucs.data);
+ else
+ return uc->from_ucs.handlers->get_mb_cur_max (uc->from_ucs.data);
+}
+
+
+static _VOID
+_DEFUN(ucs_based_conversion_get_state, (data, state, direction),
+ _VOID_PTR data _AND
+ mbstate_t *state _AND
+ int direction)
+{
+ iconv_ucs_conversion_t *uc = (iconv_ucs_conversion_t *)data;
+
+ if (direction == 0)
+ {
+ if (uc->to_ucs.handlers->get_state != NULL)
+ uc->to_ucs.handlers->get_state (uc->to_ucs.data, state);
+ else
+ *state = ICONV_ZERO_MB_STATE_T;
+ }
+ else
+ {
+ if (uc->from_ucs.handlers->get_state != NULL)
+ uc->from_ucs.handlers->get_state (uc->from_ucs.data, state);
+ else
+ *state = ICONV_ZERO_MB_STATE_T;
+ }
+
+ return;
+}
+
+
+static int
+_DEFUN(ucs_based_conversion_set_state, (data, state, direction),
+ _VOID_PTR data _AND
+ mbstate_t *state _AND
+ int direction)
+{
+ iconv_ucs_conversion_t *uc = (iconv_ucs_conversion_t *)data;
+
+ if (direction == 0)
+ {
+ if (uc->to_ucs.handlers->set_state != NULL)
+ return uc->to_ucs.handlers->set_state (uc->to_ucs.data, state);
+ }
+ else
+ {
+ if (uc->from_ucs.handlers->set_state != NULL)
+ return uc->from_ucs.handlers->set_state (uc->from_ucs.data, state);
+ }
+
+ return 0;
+}
+
+static int
+_DEFUN(ucs_based_conversion_is_stateful, (data, direction),
+ _VOID_PTR data _AND
+ int direction)
+{
+ iconv_ucs_conversion_t *uc = (iconv_ucs_conversion_t *)data;
+
+ if (direction == 0)
+ {
+ if (uc->to_ucs.handlers->is_stateful != NULL)
+ return uc->to_ucs.handlers->is_stateful (uc->to_ucs.data);
+ }
+ else
+ {
+ if (uc->from_ucs.handlers->is_stateful != NULL)
+ return uc->from_ucs.handlers->is_stateful (uc->from_ucs.data);
+ }
+
+ return 0;
+}
+
+
+/* UCS-based conversion definition object */
+_CONST iconv_conversion_handlers_t
+_iconv_ucs_conversion_handlers =
+{
+ ucs_based_conversion_open,
+ ucs_based_conversion_close,
+ ucs_based_conversion_convert,
+ ucs_based_conversion_get_state,
+ ucs_based_conversion_set_state,
+ ucs_based_conversion_get_mb_cur_max,
+ ucs_based_conversion_is_stateful
+};
+
+
+/*
+ * Supplementary functions.
+ */
+
+static int
+_DEFUN(find_encoding_name, (searchee, names),
+ _CONST char *searchee _AND
+ _CONST char **names)
+{
+ _CONST char *p;
+
+ for (p = *names; p != NULL; p = *(names++))
+ if (strcmp (p, searchee) == 0)
+ return 0;
+
+ return -1;
+}
+
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