circuitpython/py/lexerunix.c

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#include <stdint.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include "misc.h"
#include "mpconfig.h"
#include "qstr.h"
#include "lexer.h"
#include "lexerunix.h"
#if MICROPY_ENABLE_LEXER_UNIX
mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
int fd = open(filename, O_RDONLY);
if (fd < 0) {
printf("cannot open file %s\n", filename);
return NULL;
}
uint size = lseek(fd, 0, SEEK_END);
lseek(fd, 0, SEEK_SET);
char *data = m_new(char, size);
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int read_size = read(fd, data, size);
close(fd);
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if (read_size != size) {
printf("error reading file %s\n", filename);
m_del(char, data, size);
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return NULL;
}
return mp_lexer_new_from_str_len(qstr_from_str(filename), data, size, size);
}
/******************************************************************************/
/* unix implementation of import */
// TODO properly!
static const char *import_base_dir = NULL;
void mp_import_set_directory(const char *dir) {
import_base_dir = dir;
}
mp_lexer_t *mp_import_open_file(qstr mod_name) {
vstr_t *vstr = vstr_new();
if (import_base_dir != NULL) {
vstr_printf(vstr, "%s/", import_base_dir);
}
vstr_printf(vstr, "%s.py", qstr_str(mod_name));
return mp_lexer_new_from_file(vstr_str(vstr)); // TODO does lexer need to copy the string? can we free it here?
}
#endif // MICROPY_ENABLE_LEXER_UNIX