diff options
Diffstat (limited to 'iconv/loop.c')
| -rw-r--r-- | iconv/loop.c | 129 |
1 files changed, 54 insertions, 75 deletions
diff --git a/iconv/loop.c b/iconv/loop.c index c01e520..ebbc136 100644 --- a/iconv/loop.c +++ b/iconv/loop.c @@ -175,88 +175,57 @@ /* The function returns the status, as defined in gconv.h. */ static inline int -FCTNAME (LOOPFCT) (const unsigned char **inptrp, const unsigned char *inend, +FCTNAME (LOOPFCT) (struct __gconv_step *step, + struct __gconv_step_data *step_data, + const unsigned char **inptrp, const unsigned char *inend, unsigned char **outptrp, unsigned char *outend, - mbstate_t *state, int flags, void *data, size_t *irreversible EXTRA_LOOP_DECLS) { - int result = __GCONV_OK; +#ifdef LOOP_NEED_STATE + mbstate_t *state = step_data->__statep; +#endif +#ifdef LOOP_NEED_FLAGS + int flags = step_data->__flags; +#endif +#ifdef LOOP_NEED_DATA + void *data = step->__data; +#endif + int result = __GCONV_EMPTY_INPUT; const unsigned char *inptr = *inptrp; unsigned char *outptr = *outptrp; - /* We run one loop where we avoid checks for underflow/overflow of the - buffers to speed up the conversion a bit. */ - size_t min_in_rounds = (inend - inptr) / MAX_NEEDED_INPUT; - size_t min_out_rounds = (outend - outptr) / MAX_NEEDED_OUTPUT; - size_t min_rounds = MIN (min_in_rounds, min_out_rounds); - #ifdef INIT_PARAMS INIT_PARAMS; #endif -#undef NEED_LENGTH_TEST -#define NEED_LENGTH_TEST 0 - while (min_rounds-- > 0) + while (inptr != inend) { - /* Here comes the body the user provides. It can stop with RESULT - set to GCONV_INCOMPLETE_INPUT (if the size of the input characters - vary in size), GCONV_ILLEGAL_INPUT, or GCONV_FULL_OUTPUT (if the - output characters vary in size. */ - BODY - } - - if (result == __GCONV_OK) - { -#if MIN_NEEDED_INPUT == MAX_NEEDED_INPUT \ - && MIN_NEEDED_OUTPUT == MAX_NEEDED_OUTPUT - /* We don't need to start another loop since we were able to determine - the maximal number of characters to copy in advance. What remains - to be determined is the status. */ - if (inptr == inend) - /* No more input. */ - result = __GCONV_EMPTY_INPUT; - else if ((MIN_NEEDED_OUTPUT != 1 && outptr + MIN_NEEDED_OUTPUT > outend) - || (MIN_NEEDED_OUTPUT == 1 && outptr >= outend)) - /* Overflow in the output buffer. */ - result = __GCONV_FULL_OUTPUT; - else - /* We have something left in the input buffer. */ - result = __GCONV_INCOMPLETE_INPUT; -#else - result = __GCONV_EMPTY_INPUT; - -# undef NEED_LENGTH_TEST -# define NEED_LENGTH_TEST 1 - while (inptr != inend) + /* `if' cases for MIN_NEEDED_OUTPUT ==/!= 1 is made to help the + compiler generating better code. It will optimized away + since MIN_NEEDED_OUTPUT is always a constant. */ + if ((MIN_NEEDED_OUTPUT != 1 + && __builtin_expect (outptr + MIN_NEEDED_OUTPUT > outend, 0)) + || (MIN_NEEDED_OUTPUT == 1 + && __builtin_expect (outptr >= outend, 0))) + { + /* Overflow in the output buffer. */ + result = __GCONV_FULL_OUTPUT; + break; + } + if (MIN_NEEDED_INPUT > 1 + && __builtin_expect (inptr + MIN_NEEDED_INPUT > inend, 0)) { - /* `if' cases for MIN_NEEDED_OUTPUT ==/!= 1 is made to help the - compiler generating better code. It will optimized away - since MIN_NEEDED_OUTPUT is always a constant. */ - if ((MIN_NEEDED_OUTPUT != 1 - && __builtin_expect (outptr + MIN_NEEDED_OUTPUT > outend, 0)) - || (MIN_NEEDED_OUTPUT == 1 - && __builtin_expect (outptr >= outend, 0))) - { - /* Overflow in the output buffer. */ - result = __GCONV_FULL_OUTPUT; - break; - } - if (MIN_NEEDED_INPUT > 1 - && __builtin_expect (inptr + MIN_NEEDED_INPUT > inend, 0)) - { - /* We don't have enough input for another complete input - character. */ - result = __GCONV_INCOMPLETE_INPUT; - break; - } - - /* Here comes the body the user provides. It can stop with - RESULT set to GCONV_INCOMPLETE_INPUT (if the size of the - input characters vary in size), GCONV_ILLEGAL_INPUT, or - GCONV_FULL_OUTPUT (if the output characters vary in size). */ - BODY + /* We don't have enough input for another complete input + character. */ + result = __GCONV_INCOMPLETE_INPUT; + break; } -#endif /* Input and output charset are not both fixed width. */ + + /* Here comes the body the user provides. It can stop with + RESULT set to GCONV_INCOMPLETE_INPUT (if the size of the + input characters vary in size), GCONV_ILLEGAL_INPUT, or + GCONV_FULL_OUTPUT (if the output characters vary in size). */ + BODY } /* Update the pointers pointed to by the parameters. */ @@ -291,11 +260,19 @@ FCTNAME (LOOPFCT) (const unsigned char **inptrp, const unsigned char *inend, # define SINGLE(fct) SINGLE2 (fct) # define SINGLE2(fct) fct##_single static inline int -SINGLE(LOOPFCT) (const unsigned char **inptrp, const unsigned char *inend, +SINGLE(LOOPFCT) (struct __gconv_step *step, + struct __gconv_step_data *step_data, + const unsigned char **inptrp, const unsigned char *inend, unsigned char **outptrp, unsigned char *outend, - mbstate_t *state, int flags, void *data, size_t *irreversible - EXTRA_LOOP_DECLS) + size_t *irreversible EXTRA_LOOP_DECLS) { + mbstate_t *state = step_data->__statep; +#ifdef LOOP_NEED_FLAGS + int flags = step_data->__flags; +#endif +#ifdef LOOP_NEED_DATA + void *data = step->__data; +#endif int result = __GCONV_OK; unsigned char bytebuf[MAX_NEEDED_INPUT]; const unsigned char *inptr = *inptrp; @@ -347,8 +324,7 @@ SINGLE(LOOPFCT) (const unsigned char **inptrp, const unsigned char *inend, inptr = bytebuf; inend = &bytebuf[inlen]; -#undef NEED_LENGTH_TEST -#define NEED_LENGTH_TEST 1 + do { BODY @@ -410,9 +386,12 @@ SINGLE(LOOPFCT) (const unsigned char **inptrp, const unsigned char *inend, #undef EXTRA_LOOP_DECLS #undef INIT_PARAMS #undef UPDATE_PARAMS +#undef UNPACK_BYTES +#undef LOOP_NEED_STATE +#undef LOOP_NEED_FLAGS +#undef LOOP_NEED_DATA #undef get16 #undef get32 #undef put16 #undef put32 #undef unaligned -#undef UNPACK_BYTES |