98 lines
2.2 KiB
C
98 lines
2.2 KiB
C
#if defined(UNIX)
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#include <ctype.h>
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#include <errno.h>
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#include <stdlib.h>
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#include "misc.h"
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#include "mpconfig.h"
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#include "qstr.h"
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#include "nlr.h"
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#include "obj.h"
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long strtonum(const char *restrict s, int base) {
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int c, neg = 0;
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const char *p = s;
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char *num;
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long found;
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// check radix base
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if ((base != 0 && base < 2) || base > 36) {
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nlr_jump(mp_obj_new_exception_msg(&mp_type_ValueError, "ValueError: int() arg 2 must be >=2 and <= 36"));
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}
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// skip surrounded whitespace
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while (isspace((c = *(p++))));
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if (c == 0) {
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goto value_error;
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}
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// preced sign
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if (c == '+' || c == '-') {
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neg = - (c == '-');
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c = *(p++);
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}
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// find real radix base, and strip preced '0x', '0o' and '0b'
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// TODO somehow merge with similar code in parse.c
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if ((base == 0 || base == 16) && c == '0') {
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c = *(p++);
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if ((c | 32) == 'x') {
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base = 16;
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} else if (base == 0 && (c | 32) == 'o') {
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base = 8;
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} else if (base == 0 && (c | 32) == 'b') {
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base = 2;
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} else {
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base = 10;
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p -= 2;
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}
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} else if (base == 8 && c == '0') {
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c = *(p++);
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if ((c | 32) != 'o') {
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p -= 2;
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}
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} else if (base == 2 && c == '0') {
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c = *(p++);
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if ((c | 32) != 'b') {
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p -= 2;
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}
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} else {
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if (base == 0) base = 10;
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p--;
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}
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errno = 0;
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found = strtol(p, &num, base);
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if (errno) {
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goto value_error;
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} else if (found && *(num) == 0) {
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goto done;
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} else if (found || num != p) {
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goto check_tail_space;
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} else {
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goto value_error;
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}
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check_tail_space:
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if (*(num) != 0) {
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while (isspace((c = *(num++))));
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if (c != 0) {
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goto value_error;
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}
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}
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done:
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return (found ^ neg) - neg;
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value_error:
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nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "invalid literal for int() with base %d: '%s'", base, s));
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}
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#else /* defined(UNIX) */
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long strtonum(const char *restrict s, int base) {
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// TODO port strtol to stm
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return 0;
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}
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#endif /* defined(UNIX) */
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