py: Fix lexerunix, where not all data may be read from a file.
Addresses issue #526.
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@ -22,11 +22,12 @@ typedef struct _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 < sizeof(fb->buf)) {
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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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