75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/****************************************************************************
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** gmio
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** Copyright Fougue (2 Mar. 2015)
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** contact@fougue.pro
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**
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** This software is a reusable library whose purpose is to provide complete
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** I/O support for various CAD file formats (eg. STL)
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**
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** This software is governed by the CeCILL-B license under French law and
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** abiding by the rules of distribution of free software. You can use,
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** modify and/ or redistribute the software under the terms of the CeCILL-B
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** license as circulated by CEA, CNRS and INRIA at the following URL
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** "http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html".
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****************************************************************************/
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#include "string_parse.h"
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#include "helper_stream.h"
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void gmio_string_stream_fwd_iterator_init(gmio_string_stream_fwd_iterator_t *it)
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{
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/* Trick: declaring the buffer exhausted will actually trigger the first
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* call to gmio_stream_read() inside gmio_next_char()
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*/
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it->buffer.len = 0;
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it->buffer_pos = it->buffer.max_len;
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gmio_next_char(it);
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}
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int gmio_eat_word(
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gmio_string_stream_fwd_iterator_t *it, gmio_string_buffer_t *buffer)
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{
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const size_t buffer_capacity = buffer->max_len;
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const char* stream_curr_char = NULL;
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size_t i = buffer->len;
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/* assert(buffer != NULL && buffer->ptr != NULL); */
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stream_curr_char = gmio_skip_spaces(it);
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if (stream_curr_char == NULL) { /* Empty word */
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buffer->ptr[i] = 0;
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return 0;
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}
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do {
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buffer->ptr[i] = *stream_curr_char;
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stream_curr_char = gmio_next_char(it);
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++i;
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} while(i < buffer_capacity
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&& stream_curr_char != NULL
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&& !gmio_clocale_isspace(*stream_curr_char));
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if (i < buffer_capacity) {
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buffer->ptr[i] = 0; /* End string with terminating null byte */
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buffer->len = i;
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return 0;
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}
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return -1;
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}
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gmio_bool_t gmio_checked_next_chars(
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gmio_string_stream_fwd_iterator_t *it, const char *str)
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{
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size_t pos = 0;
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const char* curr_char = gmio_current_char(it);
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gmio_bool_t same = curr_char != NULL && *curr_char == *str;
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while (same) {
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curr_char = gmio_next_char(it);
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same = curr_char != NULL && *curr_char == str[++pos];
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}
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return same;
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}
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