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Diffstat (limited to 'REORG.TODO/iconv/skeleton.c')
| -rw-r--r-- | REORG.TODO/iconv/skeleton.c | 821 |
1 files changed, 821 insertions, 0 deletions
diff --git a/REORG.TODO/iconv/skeleton.c b/REORG.TODO/iconv/skeleton.c new file mode 100644 index 0000000000..a12119dc20 --- /dev/null +++ b/REORG.TODO/iconv/skeleton.c @@ -0,0 +1,821 @@ +/* Skeleton for a conversion module. + Copyright (C) 1998-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + 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/>. */ + +/* This file can be included to provide definitions of several things + many modules have in common. It can be customized using the following + macros: + + DEFINE_INIT define the default initializer. This requires the + following symbol to be defined. + + CHARSET_NAME string with official name of the coded character + set (in all-caps) + + DEFINE_FINI define the default destructor function. + + MIN_NEEDED_FROM minimal number of bytes needed for the from-charset. + MIN_NEEDED_TO likewise for the to-charset. + + MAX_NEEDED_FROM maximal number of bytes needed for the from-charset. + This macro is optional, it defaults to MIN_NEEDED_FROM. + MAX_NEEDED_TO likewise for the to-charset. + + FROM_LOOP_MIN_NEEDED_FROM + FROM_LOOP_MAX_NEEDED_FROM + minimal/maximal number of bytes needed on input + of one round through the FROM_LOOP. Defaults + to MIN_NEEDED_FROM and MAX_NEEDED_FROM, respectively. + FROM_LOOP_MIN_NEEDED_TO + FROM_LOOP_MAX_NEEDED_TO + minimal/maximal number of bytes needed on output + of one round through the FROM_LOOP. Defaults + to MIN_NEEDED_TO and MAX_NEEDED_TO, respectively. + TO_LOOP_MIN_NEEDED_FROM + TO_LOOP_MAX_NEEDED_FROM + minimal/maximal number of bytes needed on input + of one round through the TO_LOOP. Defaults + to MIN_NEEDED_TO and MAX_NEEDED_TO, respectively. + TO_LOOP_MIN_NEEDED_TO + TO_LOOP_MAX_NEEDED_TO + minimal/maximal number of bytes needed on output + of one round through the TO_LOOP. Defaults + to MIN_NEEDED_FROM and MAX_NEEDED_FROM, respectively. + + FROM_DIRECTION this macro is supposed to return a value != 0 + if we convert from the current character set, + otherwise it return 0. + + EMIT_SHIFT_TO_INIT this symbol is optional. If it is defined it + defines some code which writes out a sequence + of bytes which bring the current state into + the initial state. + + FROM_LOOP name of the function implementing the conversion + from the current character set. + TO_LOOP likewise for the other direction + + ONE_DIRECTION optional. If defined to 1, only one conversion + direction is defined instead of two. In this + case, FROM_DIRECTION should be defined to 1, and + FROM_LOOP and TO_LOOP should have the same value. + + SAVE_RESET_STATE in case of an error we must reset the state for + the rerun so this macro must be defined for + stateful encodings. It takes an argument which + is nonzero when saving. + + RESET_INPUT_BUFFER If the input character sets allow this the macro + can be defined to reset the input buffer pointers + to cover only those characters up to the error. + + FUNCTION_NAME if not set the conversion function is named `gconv'. + + PREPARE_LOOP optional code preparing the conversion loop. Can + contain variable definitions. + END_LOOP also optional, may be used to store information + + EXTRA_LOOP_ARGS optional macro specifying extra arguments passed + to loop function. + + STORE_REST optional, needed only when MAX_NEEDED_FROM > 4. + This macro stores the seen but unconverted input bytes + in the state. + + FROM_ONEBYTE optional. If defined, should be the name of a + specialized conversion function for a single byte + from the current character set to INTERNAL. This + function has prototype + wint_t + FROM_ONEBYTE (struct __gconv_step *, unsigned char); + and does a special conversion: + - The input is a single byte. + - The output is a single uint32_t. + - The state before the conversion is the initial state; + the state after the conversion is irrelevant. + - No transliteration. + - __invocation_counter = 0. + - __internal_use = 1. + - do_flush = 0. + + Modules can use mbstate_t to store conversion state as follows: + + * Bits 2..0 of '__count' contain the number of lookahead input bytes + stored in __value.__wchb. Always zero if the converter never + returns __GCONV_INCOMPLETE_INPUT. + + * Bits 31..3 of '__count' are module dependent shift state. + + * __value: When STORE_REST/UNPACK_BYTES aren't defined and when the + converter has returned __GCONV_INCOMPLETE_INPUT, this contains + at most 4 lookahead bytes. Converters with an mb_cur_max > 4 + (currently only UTF-8) must find a way to store their state + in __value.__wch and define STORE_REST/UNPACK_BYTES appropriately. + + When __value contains lookahead, __count must not be zero, because + the converter is not in the initial state then, and mbsinit() -- + defined as a (__count == 0) test -- must reflect this. + */ + +#include <assert.h> +#include <gconv.h> +#include <string.h> +#define __need_size_t +#define __need_NULL +#include <stddef.h> + +#ifndef STATIC_GCONV +# include <dlfcn.h> +#endif + +#include <sysdep.h> +#include <stdint.h> + +#ifndef DL_CALL_FCT +# define DL_CALL_FCT(fct, args) fct args +#endif + +/* The direction objects. */ +#if DEFINE_INIT +# ifndef FROM_DIRECTION +# define FROM_DIRECTION_VAL NULL +# define TO_DIRECTION_VAL ((void *) ~((uintptr_t) 0)) +# define FROM_DIRECTION (step->__data == FROM_DIRECTION_VAL) +# endif +#else +# ifndef FROM_DIRECTION +# error "FROM_DIRECTION must be provided if non-default init is used" +# endif +#endif + +/* How many bytes are needed at most for the from-charset. */ +#ifndef MAX_NEEDED_FROM +# define MAX_NEEDED_FROM MIN_NEEDED_FROM +#endif + +/* Same for the to-charset. */ +#ifndef MAX_NEEDED_TO +# define MAX_NEEDED_TO MIN_NEEDED_TO +#endif + +/* Defaults for the per-direction min/max constants. */ +#ifndef FROM_LOOP_MIN_NEEDED_FROM +# define FROM_LOOP_MIN_NEEDED_FROM MIN_NEEDED_FROM +#endif +#ifndef FROM_LOOP_MAX_NEEDED_FROM +# define FROM_LOOP_MAX_NEEDED_FROM MAX_NEEDED_FROM +#endif +#ifndef FROM_LOOP_MIN_NEEDED_TO +# define FROM_LOOP_MIN_NEEDED_TO MIN_NEEDED_TO +#endif +#ifndef FROM_LOOP_MAX_NEEDED_TO +# define FROM_LOOP_MAX_NEEDED_TO MAX_NEEDED_TO +#endif +#ifndef TO_LOOP_MIN_NEEDED_FROM +# define TO_LOOP_MIN_NEEDED_FROM MIN_NEEDED_TO +#endif +#ifndef TO_LOOP_MAX_NEEDED_FROM +# define TO_LOOP_MAX_NEEDED_FROM MAX_NEEDED_TO +#endif +#ifndef TO_LOOP_MIN_NEEDED_TO +# define TO_LOOP_MIN_NEEDED_TO MIN_NEEDED_FROM +#endif +#ifndef TO_LOOP_MAX_NEEDED_TO +# define TO_LOOP_MAX_NEEDED_TO MAX_NEEDED_FROM +#endif + + +/* Define macros which can access unaligned buffers. These macros are + supposed to be used only in code outside the inner loops. For the inner + loops we have other definitions which allow optimized access. */ +#if _STRING_ARCH_unaligned +/* We can handle unaligned memory access. */ +# define get16u(addr) *((const uint16_t *) (addr)) +# define get32u(addr) *((const uint32_t *) (addr)) + +/* We need no special support for writing values either. */ +# define put16u(addr, val) *((uint16_t *) (addr)) = (val) +# define put32u(addr, val) *((uint32_t *) (addr)) = (val) +#else +/* Distinguish between big endian and little endian. */ +# if __BYTE_ORDER == __LITTLE_ENDIAN +# define get16u(addr) \ + (((const unsigned char *) (addr))[1] << 8 \ + | ((const unsigned char *) (addr))[0]) +# define get32u(addr) \ + (((((const unsigned char *) (addr))[3] << 8 \ + | ((const unsigned char *) (addr))[2]) << 8 \ + | ((const unsigned char *) (addr))[1]) << 8 \ + | ((const unsigned char *) (addr))[0]) + +# define put16u(addr, val) \ + ({ uint16_t __val = (val); \ + ((unsigned char *) (addr))[0] = __val; \ + ((unsigned char *) (addr))[1] = __val >> 8; \ + (void) 0; }) +# define put32u(addr, val) \ + ({ uint32_t __val = (val); \ + ((unsigned char *) (addr))[0] = __val; \ + __val >>= 8; \ + ((unsigned char *) (addr))[1] = __val; \ + __val >>= 8; \ + ((unsigned char *) (addr))[2] = __val; \ + __val >>= 8; \ + ((unsigned char *) (addr))[3] = __val; \ + (void) 0; }) +# else +# define get16u(addr) \ + (((const unsigned char *) (addr))[0] << 8 \ + | ((const unsigned char *) (addr))[1]) +# define get32u(addr) \ + (((((const unsigned char *) (addr))[0] << 8 \ + | ((const unsigned char *) (addr))[1]) << 8 \ + | ((const unsigned char *) (addr))[2]) << 8 \ + | ((const unsigned char *) (addr))[3]) + +# define put16u(addr, val) \ + ({ uint16_t __val = (val); \ + ((unsigned char *) (addr))[1] = __val; \ + ((unsigned char *) (addr))[0] = __val >> 8; \ + (void) 0; }) +# define put32u(addr, val) \ + ({ uint32_t __val = (val); \ + ((unsigned char *) (addr))[3] = __val; \ + __val >>= 8; \ + ((unsigned char *) (addr))[2] = __val; \ + __val >>= 8; \ + ((unsigned char *) (addr))[1] = __val; \ + __val >>= 8; \ + ((unsigned char *) (addr))[0] = __val; \ + (void) 0; }) +# endif +#endif + + +/* For conversions from a fixed width character set to another fixed width + character set we can define RESET_INPUT_BUFFER in a very fast way. */ +#if !defined RESET_INPUT_BUFFER && !defined SAVE_RESET_STATE +# if FROM_LOOP_MIN_NEEDED_FROM == FROM_LOOP_MAX_NEEDED_FROM \ + && FROM_LOOP_MIN_NEEDED_TO == FROM_LOOP_MAX_NEEDED_TO \ + && TO_LOOP_MIN_NEEDED_FROM == TO_LOOP_MAX_NEEDED_FROM \ + && TO_LOOP_MIN_NEEDED_TO == TO_LOOP_MAX_NEEDED_TO +/* We have to use these `if's here since the compiler cannot know that + (outbuf - outerr) is always divisible by FROM/TO_LOOP_MIN_NEEDED_TO. + The ?:1 avoids division by zero warnings that gcc 3.2 emits even for + obviously unreachable code. */ +# define RESET_INPUT_BUFFER \ + if (FROM_DIRECTION) \ + { \ + if (FROM_LOOP_MIN_NEEDED_FROM % FROM_LOOP_MIN_NEEDED_TO == 0) \ + *inptrp -= (outbuf - outerr) \ + * (FROM_LOOP_MIN_NEEDED_FROM / FROM_LOOP_MIN_NEEDED_TO); \ + else if (FROM_LOOP_MIN_NEEDED_TO % FROM_LOOP_MIN_NEEDED_FROM == 0) \ + *inptrp -= (outbuf - outerr) \ + / (FROM_LOOP_MIN_NEEDED_TO / FROM_LOOP_MIN_NEEDED_FROM \ + ? : 1); \ + else \ + *inptrp -= ((outbuf - outerr) / FROM_LOOP_MIN_NEEDED_TO) \ + * FROM_LOOP_MIN_NEEDED_FROM; \ + } \ + else \ + { \ + if (TO_LOOP_MIN_NEEDED_FROM % TO_LOOP_MIN_NEEDED_TO == 0) \ + *inptrp -= (outbuf - outerr) \ + * (TO_LOOP_MIN_NEEDED_FROM / TO_LOOP_MIN_NEEDED_TO); \ + else if (TO_LOOP_MIN_NEEDED_TO % TO_LOOP_MIN_NEEDED_FROM == 0) \ + *inptrp -= (outbuf - outerr) \ + / (TO_LOOP_MIN_NEEDED_TO / TO_LOOP_MIN_NEEDED_FROM ? : 1); \ + else \ + *inptrp -= ((outbuf - outerr) / TO_LOOP_MIN_NEEDED_TO) \ + * TO_LOOP_MIN_NEEDED_FROM; \ + } +# endif +#endif + + +/* The default init function. It simply matches the name and initializes + the step data to point to one of the objects above. */ +#if DEFINE_INIT +# ifndef CHARSET_NAME +# error "CHARSET_NAME not defined" +# endif + +extern int gconv_init (struct __gconv_step *step); +int +gconv_init (struct __gconv_step *step) +{ + /* Determine which direction. */ + if (strcmp (step->__from_name, CHARSET_NAME) == 0) + { + step->__data = FROM_DIRECTION_VAL; + + step->__min_needed_from = FROM_LOOP_MIN_NEEDED_FROM; + step->__max_needed_from = FROM_LOOP_MAX_NEEDED_FROM; + step->__min_needed_to = FROM_LOOP_MIN_NEEDED_TO; + step->__max_needed_to = FROM_LOOP_MAX_NEEDED_TO; + +#ifdef FROM_ONEBYTE + step->__btowc_fct = FROM_ONEBYTE; +#endif + } + else if (__builtin_expect (strcmp (step->__to_name, CHARSET_NAME), 0) == 0) + { + step->__data = TO_DIRECTION_VAL; + + step->__min_needed_from = TO_LOOP_MIN_NEEDED_FROM; + step->__max_needed_from = TO_LOOP_MAX_NEEDED_FROM; + step->__min_needed_to = TO_LOOP_MIN_NEEDED_TO; + step->__max_needed_to = TO_LOOP_MAX_NEEDED_TO; + } + else + return __GCONV_NOCONV; + +#ifdef SAVE_RESET_STATE + step->__stateful = 1; +#else + step->__stateful = 0; +#endif + + return __GCONV_OK; +} +#endif + + +/* The default destructor function does nothing in the moment and so + we don't define it at all. But we still provide the macro just in + case we need it some day. */ +#if DEFINE_FINI +#endif + + +/* If no arguments have to passed to the loop function define the macro + as empty. */ +#ifndef EXTRA_LOOP_ARGS +# define EXTRA_LOOP_ARGS +#endif + + +/* This is the actual conversion function. */ +#ifndef FUNCTION_NAME +# define FUNCTION_NAME gconv +#endif + +/* The macros are used to access the function to convert single characters. */ +#define SINGLE(fct) SINGLE2 (fct) +#define SINGLE2(fct) fct##_single + + +extern int FUNCTION_NAME (struct __gconv_step *step, + struct __gconv_step_data *data, + const unsigned char **inptrp, + const unsigned char *inend, + unsigned char **outbufstart, size_t *irreversible, + int do_flush, int consume_incomplete); +int +FUNCTION_NAME (struct __gconv_step *step, struct __gconv_step_data *data, + const unsigned char **inptrp, const unsigned char *inend, + unsigned char **outbufstart, size_t *irreversible, int do_flush, + int consume_incomplete) +{ + struct __gconv_step *next_step = step + 1; + struct __gconv_step_data *next_data = data + 1; + __gconv_fct fct = NULL; + int status; + + if ((data->__flags & __GCONV_IS_LAST) == 0) + { + fct = next_step->__fct; +#ifdef PTR_DEMANGLE + if (next_step->__shlib_handle != NULL) + PTR_DEMANGLE (fct); +#endif + } + + /* 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 (__glibc_unlikely (do_flush)) + { + /* This should never happen during error handling. */ + assert (outbufstart == NULL); + + status = __GCONV_OK; + +#ifdef EMIT_SHIFT_TO_INIT + if (do_flush == 1) + { + /* We preserve the initial values of the pointer variables. */ + unsigned char *outbuf = data->__outbuf; + unsigned char *outstart = outbuf; + unsigned char *outend = data->__outbufend; + +# ifdef PREPARE_LOOP + PREPARE_LOOP +# endif + +# ifdef SAVE_RESET_STATE + SAVE_RESET_STATE (1); +# endif + + /* Emit the escape sequence to reset the state. */ + EMIT_SHIFT_TO_INIT; + + /* Call the steps down the chain if there are any but only if we + successfully emitted the escape sequence. This should only + fail if the output buffer is full. If the input is invalid + it should be discarded since the user wants to start from a + clean state. */ + if (status == __GCONV_OK) + { + if (data->__flags & __GCONV_IS_LAST) + /* Store information about how many bytes are available. */ + data->__outbuf = outbuf; + else + { + /* Write out all output which was produced. */ + if (outbuf > outstart) + { + const unsigned char *outerr = outstart; + int result; + + result = DL_CALL_FCT (fct, (next_step, next_data, + &outerr, outbuf, NULL, + irreversible, 0, + consume_incomplete)); + + if (result != __GCONV_EMPTY_INPUT) + { + if (__glibc_unlikely (outerr != outbuf)) + { + /* We have a problem. Undo the conversion. */ + outbuf = outstart; + + /* Restore the state. */ +# ifdef SAVE_RESET_STATE + SAVE_RESET_STATE (0); +# endif + } + + /* Change the status. */ + status = result; + } + } + + if (status == __GCONV_OK) + /* Now flush the remaining steps. */ + status = DL_CALL_FCT (fct, (next_step, next_data, NULL, + NULL, NULL, irreversible, 1, + consume_incomplete)); + } + } + } + else +#endif + { + /* Clear the state object. There might be bytes in there from + previous calls with CONSUME_INCOMPLETE == 1. But don't emit + escape sequences. */ + memset (data->__statep, '\0', sizeof (*data->__statep)); + + if (! (data->__flags & __GCONV_IS_LAST)) + /* Now flush the remaining steps. */ + status = DL_CALL_FCT (fct, (next_step, next_data, NULL, NULL, + NULL, irreversible, do_flush, + consume_incomplete)); + } + } + else + { + /* We preserve the initial values of the pointer variables, + but only some conversion modules need it. */ + const unsigned char *inptr __attribute__ ((__unused__)) = *inptrp; + unsigned char *outbuf = (__builtin_expect (outbufstart == NULL, 1) + ? data->__outbuf : *outbufstart); + unsigned char *outend = data->__outbufend; + unsigned char *outstart; + /* This variable is used to count the number of characters we + actually converted. */ + size_t lirreversible = 0; + size_t *lirreversiblep = irreversible ? &lirreversible : NULL; + + /* The following assumes that encodings, which have a variable length + what might unalign a buffer even though it is an aligned in the + beginning, either don't have the minimal number of bytes as a divisor + of the maximum length or have a minimum length of 1. This is true + for all known and supported encodings. + We use && instead of || to combine the subexpression for the FROM + encoding and for the TO encoding, because usually one of them is + INTERNAL, for which the subexpression evaluates to 1, but INTERNAL + buffers are always aligned correctly. */ +#define POSSIBLY_UNALIGNED \ + (!_STRING_ARCH_unaligned \ + && (((FROM_LOOP_MIN_NEEDED_FROM != 1 \ + && FROM_LOOP_MAX_NEEDED_FROM % FROM_LOOP_MIN_NEEDED_FROM == 0) \ + && (FROM_LOOP_MIN_NEEDED_TO != 1 \ + && FROM_LOOP_MAX_NEEDED_TO % FROM_LOOP_MIN_NEEDED_TO == 0)) \ + || ((TO_LOOP_MIN_NEEDED_FROM != 1 \ + && TO_LOOP_MAX_NEEDED_FROM % TO_LOOP_MIN_NEEDED_FROM == 0) \ + && (TO_LOOP_MIN_NEEDED_TO != 1 \ + && TO_LOOP_MAX_NEEDED_TO % TO_LOOP_MIN_NEEDED_TO == 0)))) +#if POSSIBLY_UNALIGNED + int unaligned; +# define GEN_unaligned(name) GEN_unaligned2 (name) +# define GEN_unaligned2(name) name##_unaligned +#else +# define unaligned 0 +#endif + +#ifdef PREPARE_LOOP + PREPARE_LOOP +#endif + +#if FROM_LOOP_MAX_NEEDED_FROM > 1 || TO_LOOP_MAX_NEEDED_FROM > 1 + /* If the function is used to implement the mb*towc*() or wc*tomb*() + functions we must test whether any bytes from the last call are + stored in the `state' object. */ + if (((FROM_LOOP_MAX_NEEDED_FROM > 1 && TO_LOOP_MAX_NEEDED_FROM > 1) + || (FROM_LOOP_MAX_NEEDED_FROM > 1 && FROM_DIRECTION) + || (TO_LOOP_MAX_NEEDED_FROM > 1 && !FROM_DIRECTION)) + && consume_incomplete && (data->__statep->__count & 7) != 0) + { + /* Yep, we have some bytes left over. Process them now. + But this must not happen while we are called from an + error handler. */ + assert (outbufstart == NULL); + +# if FROM_LOOP_MAX_NEEDED_FROM > 1 + if (TO_LOOP_MAX_NEEDED_FROM == 1 || FROM_DIRECTION) + status = SINGLE(FROM_LOOP) (step, data, inptrp, inend, &outbuf, + outend, lirreversiblep + EXTRA_LOOP_ARGS); +# endif +# if !ONE_DIRECTION +# if FROM_LOOP_MAX_NEEDED_FROM > 1 && TO_LOOP_MAX_NEEDED_FROM > 1 + else +# endif +# if TO_LOOP_MAX_NEEDED_FROM > 1 + status = SINGLE(TO_LOOP) (step, data, inptrp, inend, &outbuf, + outend, lirreversiblep EXTRA_LOOP_ARGS); +# endif +# endif + + if (__builtin_expect (status, __GCONV_OK) != __GCONV_OK) + return status; + } +#endif + +#if POSSIBLY_UNALIGNED + unaligned = + ((FROM_DIRECTION + && ((uintptr_t) inptr % FROM_LOOP_MIN_NEEDED_FROM != 0 + || ((data->__flags & __GCONV_IS_LAST) + && (uintptr_t) outbuf % FROM_LOOP_MIN_NEEDED_TO != 0))) + || (!FROM_DIRECTION + && (((data->__flags & __GCONV_IS_LAST) + && (uintptr_t) outbuf % TO_LOOP_MIN_NEEDED_TO != 0) + || (uintptr_t) inptr % TO_LOOP_MIN_NEEDED_FROM != 0))); +#endif + + while (1) + { + /* Remember the start value for this round. */ + inptr = *inptrp; + /* The outbuf buffer is empty. */ + outstart = outbuf; + +#ifdef SAVE_RESET_STATE + SAVE_RESET_STATE (1); +#endif + + if (__glibc_likely (!unaligned)) + { + if (FROM_DIRECTION) + /* Run the conversion loop. */ + status = FROM_LOOP (step, data, inptrp, inend, &outbuf, outend, + lirreversiblep EXTRA_LOOP_ARGS); + else + /* Run the conversion loop. */ + status = TO_LOOP (step, data, inptrp, inend, &outbuf, outend, + lirreversiblep EXTRA_LOOP_ARGS); + } +#if POSSIBLY_UNALIGNED + else + { + if (FROM_DIRECTION) + /* Run the conversion loop. */ + status = GEN_unaligned (FROM_LOOP) (step, data, inptrp, inend, + &outbuf, outend, + lirreversiblep + EXTRA_LOOP_ARGS); + else + /* Run the conversion loop. */ + status = GEN_unaligned (TO_LOOP) (step, data, inptrp, inend, + &outbuf, outend, + lirreversiblep + EXTRA_LOOP_ARGS); + } +#endif + + /* If we were called as part of an error handling module we + don't do anything else here. */ + if (__glibc_unlikely (outbufstart != NULL)) + { + *outbufstart = outbuf; + return status; + } + + /* We finished one use of the loops. */ + ++data->__invocation_counter; + + /* If this is the last step leave the loop, there is nothing + we can do. */ + if (__glibc_unlikely (data->__flags & __GCONV_IS_LAST)) + { + /* Store information about how many bytes are available. */ + data->__outbuf = outbuf; + + /* Remember how many non-identical characters we + converted in an irreversible way. */ + *irreversible += lirreversible; + + break; + } + + /* Write out all output which was produced. */ + if (__glibc_likely (outbuf > outstart)) + { + const unsigned char *outerr = data->__outbuf; + int result; + + result = DL_CALL_FCT (fct, (next_step, next_data, &outerr, + outbuf, NULL, irreversible, 0, + consume_incomplete)); + + if (result != __GCONV_EMPTY_INPUT) + { + if (__glibc_unlikely (outerr != outbuf)) + { +#ifdef RESET_INPUT_BUFFER + RESET_INPUT_BUFFER; +#else + /* We have a problem in one of the functions below. + Undo the conversion upto the error point. */ + size_t nstatus __attribute__ ((unused)); + + /* Reload the pointers. */ + *inptrp = inptr; + outbuf = outstart; + + /* Restore the state. */ +# ifdef SAVE_RESET_STATE + SAVE_RESET_STATE (0); +# endif + + if (__glibc_likely (!unaligned)) + { + if (FROM_DIRECTION) + /* Run the conversion loop. */ + nstatus = FROM_LOOP (step, data, inptrp, inend, + &outbuf, outerr, + lirreversiblep + EXTRA_LOOP_ARGS); + else + /* Run the conversion loop. */ + nstatus = TO_LOOP (step, data, inptrp, inend, + &outbuf, outerr, + lirreversiblep + EXTRA_LOOP_ARGS); + } +# if POSSIBLY_UNALIGNED + else + { + if (FROM_DIRECTION) + /* Run the conversion loop. */ + nstatus = GEN_unaligned (FROM_LOOP) (step, data, + inptrp, inend, + &outbuf, + outerr, + lirreversiblep + EXTRA_LOOP_ARGS); + else + /* Run the conversion loop. */ + nstatus = GEN_unaligned (TO_LOOP) (step, data, + inptrp, inend, + &outbuf, outerr, + lirreversiblep + EXTRA_LOOP_ARGS); + } +# endif + + /* We must run out of output buffer space in this + rerun. */ + assert (outbuf == outerr); + assert (nstatus == __GCONV_FULL_OUTPUT); + + /* If we haven't consumed a single byte decrement + the invocation counter. */ + if (__glibc_unlikely (outbuf == outstart)) + --data->__invocation_counter; +#endif /* reset input buffer */ + } + + /* Change the status. */ + status = result; + } + else + /* All the output is consumed, we can make another run + if everything was ok. */ + if (status == __GCONV_FULL_OUTPUT) + { + status = __GCONV_OK; + outbuf = data->__outbuf; + } + } + + if (status != __GCONV_OK) + break; + + /* Reset the output buffer pointer for the next round. */ + outbuf = data->__outbuf; + } + +#ifdef END_LOOP + END_LOOP +#endif + + /* If we are supposed to consume all character store now all of the + remaining characters in the `state' object. */ +#if FROM_LOOP_MAX_NEEDED_FROM > 1 || TO_LOOP_MAX_NEEDED_FROM > 1 + if (((FROM_LOOP_MAX_NEEDED_FROM > 1 && TO_LOOP_MAX_NEEDED_FROM > 1) + || (FROM_LOOP_MAX_NEEDED_FROM > 1 && FROM_DIRECTION) + || (TO_LOOP_MAX_NEEDED_FROM > 1 && !FROM_DIRECTION)) + && __builtin_expect (consume_incomplete, 0) + && status == __GCONV_INCOMPLETE_INPUT) + { +# ifdef STORE_REST + mbstate_t *state = data->__statep; + + STORE_REST +# else + /* Make sure the remaining bytes fit into the state objects + buffer. */ + assert (inend - *inptrp < 4); + + size_t cnt; + for (cnt = 0; *inptrp < inend; ++cnt) + data->__statep->__value.__wchb[cnt] = *(*inptrp)++; + data->__statep->__count &= ~7; + data->__statep->__count |= cnt; +# endif + } +#endif +#undef unaligned +#undef POSSIBLY_UNALIGNED + } + + return status; +} + +#undef DEFINE_INIT +#undef CHARSET_NAME +#undef DEFINE_FINI +#undef MIN_NEEDED_FROM +#undef MIN_NEEDED_TO +#undef MAX_NEEDED_FROM +#undef MAX_NEEDED_TO +#undef FROM_LOOP_MIN_NEEDED_FROM +#undef FROM_LOOP_MAX_NEEDED_FROM +#undef FROM_LOOP_MIN_NEEDED_TO +#undef FROM_LOOP_MAX_NEEDED_TO +#undef TO_LOOP_MIN_NEEDED_FROM +#undef TO_LOOP_MAX_NEEDED_FROM +#undef TO_LOOP_MIN_NEEDED_TO +#undef TO_LOOP_MAX_NEEDED_TO +#undef FROM_DIRECTION +#undef EMIT_SHIFT_TO_INIT +#undef FROM_LOOP +#undef TO_LOOP +#undef ONE_DIRECTION +#undef SAVE_RESET_STATE +#undef RESET_INPUT_BUFFER +#undef FUNCTION_NAME +#undef PREPARE_LOOP +#undef END_LOOP +#undef EXTRA_LOOP_ARGS +#undef STORE_REST +#undef FROM_ONEBYTE |