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gmio_core: micro-optimizations in implementation of string_parse.h

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This commit is contained in:
Hugues Delorme 2015-05-07 15:56:44 +02:00
parent 0702632c95
commit 3452545b76
2 changed files with 14 additions and 20 deletions
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26
src/gmio_core/internal/string_parse.c
View File

@ -78,45 +78,39 @@ const char *gmio_next_char(gmio_string_stream_fwd_iterator_t *it)
return gmio_next_char_from_stream(it); return gmio_next_char_from_stream(it);
} }
void gmio_skip_spaces(gmio_string_stream_fwd_iterator_t *it) const char *gmio_skip_spaces(gmio_string_stream_fwd_iterator_t *it)
{ {
const char* curr_char = gmio_current_char(it); const char* curr_char = gmio_current_char(it);
while (curr_char != NULL && gmio_clocale_isspace(*curr_char)) while (curr_char != NULL && gmio_clocale_isspace(*curr_char))
curr_char = gmio_next_char(it); curr_char = gmio_next_char(it);
return curr_char;
} }
int gmio_eat_word( int gmio_eat_word(
gmio_string_stream_fwd_iterator_t *it, gmio_string_buffer_t *buffer) gmio_string_stream_fwd_iterator_t *it, gmio_string_buffer_t *buffer)
{ {
const size_t buffer_capacity = buffer->max_len;
const char* stream_curr_char = NULL; const char* stream_curr_char = NULL;
int isspace_res = 0;
size_t i = 0; size_t i = 0;
if (buffer == NULL || buffer->ptr == NULL) /* assert(buffer != NULL && buffer->ptr != NULL); */
return -1;
buffer->len = 0; buffer->len = 0;
gmio_skip_spaces(it); stream_curr_char = gmio_skip_spaces(it);
stream_curr_char = gmio_current_char(it);
if (stream_curr_char == NULL) { /* Empty word */ if (stream_curr_char == NULL) { /* Empty word */
buffer->ptr[0] = 0; buffer->ptr[0] = 0;
buffer->len = 0;
return 0; return 0;
} }
while (i < buffer->max_len do {
&& stream_curr_char != NULL
&& isspace_res == 0)
{
isspace_res = gmio_clocale_isspace(*stream_curr_char);
if (isspace_res == 0) {
buffer->ptr[i] = *stream_curr_char; buffer->ptr[i] = *stream_curr_char;
stream_curr_char = gmio_next_char(it); stream_curr_char = gmio_next_char(it);
++i; ++i;
} } while(i < buffer_capacity
} && stream_curr_char != NULL
&& !gmio_clocale_isspace(*stream_curr_char));
if (i < buffer->max_len) { if (i < buffer_capacity) {
buffer->ptr[i] = 0; /* End string with terminating null byte */ buffer->ptr[i] = 0; /* End string with terminating null byte */
buffer->len = i; buffer->len = i;
if (stream_curr_char != NULL if (stream_curr_char != NULL

2
src/gmio_core/internal/string_parse.h
View File

@ -59,7 +59,7 @@ void gmio_string_stream_fwd_iterator_init(
const char* gmio_current_char( const char* gmio_current_char(
const gmio_string_stream_fwd_iterator_t* it); const gmio_string_stream_fwd_iterator_t* it);
void gmio_skip_spaces( const char* gmio_skip_spaces(
gmio_string_stream_fwd_iterator_t* it); gmio_string_stream_fwd_iterator_t* it);
int gmio_eat_word( int gmio_eat_word(