diff options
Diffstat (limited to 'newlib/libc/iconv/lib/ces_table.c')
| -rw-r--r-- | newlib/libc/iconv/lib/ces_table.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/newlib/libc/iconv/lib/ces_table.c b/newlib/libc/iconv/lib/ces_table.c new file mode 100644 index 000000000..1844fcd8a --- /dev/null +++ b/newlib/libc/iconv/lib/ces_table.c @@ -0,0 +1,122 @@ +/*- + * 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. + * + * iconv (Charset Conversion Library) v2.0 + */ +#include <sys/types.h> +#include <assert.h> +#include <errno.h> +#include <stdlib.h> +#include <reent.h> +#include "local.h" + +static int +_DEFUN(table_init, (rptr, data, name, desc_data), + struct _reent *rptr _AND + _VOID_PTR *data _AND + _CONST char *name _AND + _CONST _VOID_PTR desc_data) +{ + int res; + struct iconv_ccs *ccs = _malloc_r(rptr, sizeof(struct iconv_ccs)); + if (ccs == NULL) + return __errno_r(rptr); + res = _iconv_ccs_init(rptr, ccs, name); + if (res) + _free_r(rptr, ccs); + else + (struct iconv_ccs *)(*data) = ccs; + return res; +} + +static int +_DEFUN(table_close, (rptr, data), + struct _reent *rptr _AND + _VOID_PTR data) +{ + int res = 0; + + if (data != NULL) + res = ((struct iconv_ccs *)data)->close(rptr, (struct iconv_ccs *)data); + _free_r(rptr, data); + return res; +} + +static ssize_t +_DEFUN(convert_from_ucs, (ces, in, outbuf, outbytesleft), + struct iconv_ces *ces _AND + ucs_t in _AND + unsigned char **outbuf _AND + size_t *outbytesleft) +{ + ucs_t res; + size_t bytes; + + if (in == UCS_CHAR_NONE) + return 1; /* No state reinitialization for table charsets */ + if (iconv_char32bit(in)) + return -1; + res = ICONV_CCS_CONVERT_FROM_UCS((struct iconv_ccs *)(ces->data), in); + if (res == UCS_CHAR_INVALID) + return -1; /* No character in output charset */ + bytes = res & 0xFF00 ? 2 : 1; + if (*outbytesleft < bytes) + return 0; /* No space in output buffer */ + if (bytes == 2) + *(*outbuf)++ = (res >> 8) & 0xFF; + *(*outbuf)++ = res & 0xFF; + *outbytesleft -= bytes; + return 1; +} + +static ucs_t +_DEFUN(convert_to_ucs, (ces, inbuf, inbytesleft), + struct iconv_ces *ces _AND + _CONST unsigned char **inbuf _AND + size_t *inbytesleft) +{ + struct iconv_ccs *ccsd = (struct iconv_ccs *)(ces->data); + unsigned char byte = *(*inbuf); + ucs_t res = ICONV_CCS_CONVERT_TO_UCS(ccsd, byte); + size_t bytes = (res == UCS_CHAR_INVALID && ccsd->nbits > 8) ? 2 : 1; + + if (*inbytesleft < bytes) + return UCS_CHAR_NONE; /* Not enough bytes in the input buffer */ + if (bytes == 2) + res = ICONV_CCS_CONVERT_TO_UCS(ccsd, (byte << 8) | (* ++(*inbuf))); + (*inbuf) ++; + *inbytesleft -= bytes; + return res; +} + +_CONST struct iconv_ces_desc _iconv_ces_table_driven = { + table_init, + table_close, + _iconv_ces_reset_null, + convert_from_ucs, + convert_to_ucs, + NULL +}; + |