59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#include "misc.h"
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#include "mpconfig.h"
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#if MICROPY_ENABLE_LEXER_UNIX
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "qstr.h"
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#include "lexer.h"
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#include "lexerunix.h"
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typedef struct _mp_lexer_file_buf_t {
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int fd;
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char buf[20];
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uint len;
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uint pos;
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} mp_lexer_file_buf_t;
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STATIC unichar file_buf_next_char(mp_lexer_file_buf_t *fb) {
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if (fb->pos >= fb->len) {
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if (fb->len == 0) {
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return MP_LEXER_CHAR_EOF;
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} else {
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int n = read(fb->fd, fb->buf, sizeof(fb->buf));
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if (n <= 0) {
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fb->len = 0;
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return MP_LEXER_CHAR_EOF;
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}
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fb->len = n;
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fb->pos = 0;
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}
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}
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return fb->buf[fb->pos++];
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}
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STATIC void file_buf_close(mp_lexer_file_buf_t *fb) {
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close(fb->fd);
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m_del_obj(mp_lexer_file_buf_t, fb);
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}
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mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
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mp_lexer_file_buf_t *fb = m_new_obj(mp_lexer_file_buf_t);
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fb->fd = open(filename, O_RDONLY);
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if (fb->fd < 0) {
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m_del_obj(mp_lexer_file_buf_t, fb);
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return NULL;
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}
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int n = read(fb->fd, fb->buf, sizeof(fb->buf));
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fb->len = n;
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fb->pos = 0;
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return mp_lexer_new(qstr_from_str(filename), fb, (mp_lexer_stream_next_char_t)file_buf_next_char, (mp_lexer_stream_close_t)file_buf_close);
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}
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#endif // MICROPY_ENABLE_LEXER_UNIX
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