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glibc/iconvdata/8bit-gap.c
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/* Generic conversion to and from 8bit charsets, | |
converting from UCS using gaps. | |
Copyright (C) 1997-2016 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 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 | |
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> | |
struct gap | |
{ | |
uint16_t start; | |
uint16_t end; | |
int32_t idx; | |
}; | |
/* Now we can include the tables. */ | |
#include TABLES | |
#ifndef NONNUL | |
# define NONNUL(c) ((c) != '\0') | |
#endif | |
#define FROM_LOOP from_gap | |
#define TO_LOOP to_gap | |
#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 the 8bit charset to UCS4. */ | |
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM | |
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO | |
#define LOOPFCT FROM_LOOP | |
#define BODY \ | |
{ \ | |
uint32_t ch = to_ucs4[*inptr]; \ | |
\ | |
if (HAS_HOLES && __builtin_expect (ch == L'\0', 0) && NONNUL (*inptr)) \ | |
{ \ | |
/* This is an illegal character. */ \ | |
STANDARD_FROM_LOOP_ERR_HANDLER (1); \ | |
} \ | |
else \ | |
{ \ | |
put32 (outptr, ch); \ | |
outptr += 4; \ | |
} \ | |
\ | |
++inptr; \ | |
} | |
#define LOOP_NEED_FLAGS | |
#define ONEBYTE_BODY \ | |
{ \ | |
uint32_t ch = to_ucs4[c]; \ | |
\ | |
if (HAS_HOLES && __builtin_expect (ch == L'\0', 0) && NONNUL (c)) \ | |
return WEOF; \ | |
else \ | |
return ch; \ | |
} | |
#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 \ | |
{ \ | |
const struct gap *rp = from_idx; \ | |
uint32_t ch = get32 (inptr); \ | |
unsigned char res; \ | |
\ | |
if (__glibc_unlikely (ch >= 0xffff)) \ | |
{ \ | |
UNICODE_TAG_HANDLER (ch, 4); \ | |
rp = NULL; \ | |
} \ | |
else \ | |
while (ch > rp->end) \ | |
++rp; \ | |
if (__builtin_expect (rp == NULL, 0) \ | |
|| __builtin_expect (ch < rp->start, 0) \ | |
|| (res = from_ucs4[ch + rp->idx], \ | |
__builtin_expect (res, '\1') == '\0' && ch != 0)) \ | |
{ \ | |
/* This is an illegal character. */ \ | |
STANDARD_TO_LOOP_ERR_HANDLER (4); \ | |
} \ | |
\ | |
*outptr++ = res; \ | |
inptr += 4; \ | |
} | |
#define LOOP_NEED_FLAGS | |
#include <iconv/loop.c> | |
/* Now define the toplevel functions. */ | |
#include <iconv/skeleton.c> |