lib/strutils: follow const in parse_size()
* don't cast from char to const char * don't share endptr from strtoxxx() with rest of the code as the end pointer is char, but code works with const chars Signed-off-by: Karel Zak <kzak@redhat.com>
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@ -62,7 +62,8 @@ static int do_scale_by_power (uintmax_t *x, int base, int power)
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*/
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int parse_size(const char *str, uintmax_t *res, int *power)
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{
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char *p;
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const char *p;
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char *end;
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uintmax_t x, frac = 0;
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int base = 1024, rc = 0, pwr = 0, frac_zeros = 0;
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@ -83,25 +84,25 @@ int parse_size(const char *str, uintmax_t *res, int *power)
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* use lconv->negative_sign. But coreutils use the same solution,
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* so it's probably good enough...
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*/
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p = (char *) str;
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p = str;
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while (isspace((unsigned char) *p))
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p++;
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if (*p == '-') {
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rc = -EINVAL;
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goto err;
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}
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p = NULL;
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errno = 0;
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x = strtoumax(str, &p, 0);
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errno = 0, end = NULL;
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x = strtoumax(str, &end, 0);
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if (p == str ||
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if (end == str ||
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(errno != 0 && (x == UINTMAX_MAX || x == 0))) {
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rc = errno ? -errno : -EINVAL;
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goto err;
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}
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if (!p || !*p)
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if (!end || !*end)
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goto done; /* without suffix */
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p = end;
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/*
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* Check size suffixes
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@ -113,25 +114,26 @@ check_suffix:
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base = 1000; /* XB, 10^N */
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else if (*(p + 1)) {
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struct lconv const *l = localeconv();
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char *dp = l ? l->decimal_point : NULL;
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const char *dp = l ? l->decimal_point : NULL;
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size_t dpsz = dp ? strlen(dp) : 0;
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if (frac == 0 && *p && dp && strncmp(dp, p, dpsz) == 0) {
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char *fstr = p + dpsz;
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const char *fstr = p + dpsz;
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for (p = fstr; *p == '0'; p++)
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frac_zeros++;
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errno = 0, p = NULL;
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frac = strtoumax(fstr, &p, 0);
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if (p == fstr ||
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errno = 0, end = NULL;
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frac = strtoumax(fstr, &end, 0);
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if (end == fstr ||
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(errno != 0 && (frac == UINTMAX_MAX || frac == 0))) {
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rc = errno ? -errno : -EINVAL;
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goto err;
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}
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if (frac && (!p || !*p)) {
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if (frac && (!end || !*end)) {
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rc = -EINVAL;
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goto err; /* without suffix, but with frac */
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}
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p = end;
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goto check_suffix;
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}
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rc = -EINVAL;
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