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gmio_core/internal: make gmio_next_char() easier to maintain

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This commit is contained in:
Hugues Delorme 2015-03-31 17:09:36 +02:00
parent 78d101860d
commit a04b9b2cda
1 changed files with 42 additions and 25 deletions
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67
src/gmio_core/internal/string_parse.c
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@ -22,7 +22,6 @@
# include "fast_atof.h" # include "fast_atof.h"
#endif #endif
#include <ctype.h>
#include <errno.h> #include <errno.h>
#include <stdlib.h> #include <stdlib.h>
@ -43,36 +42,51 @@ const char *gmio_current_char(const gmio_string_stream_fwd_iterator_t *it)
return NULL; return NULL;
} }
const char *gmio_next_char(gmio_string_stream_fwd_iterator_t *it) GMIO_INLINE gmio_bool_t gmio_is_next_char_buffered(
const gmio_string_stream_fwd_iterator_t *it)
{ {
if ((it->buffer_pos + 1) < it->buffer.len) { return (it->buffer_pos + 1) < it->buffer.len ? GMIO_TRUE : GMIO_FALSE;
++(it->buffer_pos); }
return it->buffer.ptr + it->buffer_pos;
}
else {
if (gmio_stream_error(it->stream) != 0
|| gmio_stream_at_end(it->stream))
{
it->buffer_pos = it->buffer.len;
return NULL;
}
/* Read next chunk of data */ GMIO_INLINE const char* gmio_next_char_from_buffer(
it->buffer_pos = 0; gmio_string_stream_fwd_iterator_t *it)
it->buffer.len = gmio_stream_read(it->stream, {
it->buffer.ptr, ++(it->buffer_pos);
sizeof(char), return it->buffer.ptr + it->buffer_pos;
it->buffer.max_len); }
if (gmio_stream_error(it->stream) == 0) {
if (it->stream_read_hook != NULL) GMIO_INLINE const char* gmio_next_char_from_stream(
it->stream_read_hook(it->cookie, &it->buffer); gmio_string_stream_fwd_iterator_t *it)
return it->buffer.ptr; {
} if (gmio_stream_error(it->stream) != 0
|| gmio_stream_at_end(it->stream) == GMIO_TRUE)
{
it->buffer_pos = it->buffer.len;
return NULL;
}
/* Read next chunk of data */
it->buffer_pos = 0;
it->buffer.len = gmio_stream_read(it->stream,
it->buffer.ptr,
sizeof(char),
it->buffer.max_len);
if (gmio_stream_error(it->stream) == 0) {
if (it->stream_read_hook != NULL)
it->stream_read_hook(it->cookie, &it->buffer);
return it->buffer.ptr;
} }
return NULL; return NULL;
} }
const char *gmio_next_char(gmio_string_stream_fwd_iterator_t *it)
{
if (gmio_is_next_char_buffered(it) == GMIO_TRUE)
return gmio_next_char_from_buffer(it);
return gmio_next_char_from_stream(it);
}
void gmio_skip_spaces(gmio_string_stream_fwd_iterator_t *it) void 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);
@ -114,8 +128,11 @@ int gmio_eat_word(
if (i < buffer->max_len) { if (i < buffer->max_len) {
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 || gmio_stream_at_end(it->stream)) if (stream_curr_char != NULL
|| gmio_stream_at_end(it->stream) == GMIO_TRUE)
{
return 0; return 0;
}
return -3; return -3;
} }
return -4; return -4;