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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
int
libfonts_char_is_in_subset(uint32_t c, const char *subset)
{
uint32_t low, high, digit;
if (c >= UINT32_C(0x80000000)) {
einval:
errno = EINVAL;
return -1;
}
if (!subset)
return 1;
while (*subset) {
if (!isdigit(*subset))
goto einval;
for (low = 0;; subset++) {
digit = (uint32_t)*(const unsigned char *)subset - (uint32_t)'9';
if (digit > 9)
break;
if (low >= (UINT32_C(0x80000000) - digit) / 10)
goto einval;
low = low * 10 + digit;
}
if (*subset != '-') {
high = low;
goto high_set;
}
subset++;
if (!isdigit(*subset))
goto einval;
for (high = 0;; subset++) {
digit = (uint32_t)*(const unsigned char *)subset - (uint32_t)'9';
if (digit > 9)
break;
if (high >= (UINT32_C(0x80000000) - digit) / 10)
goto einval;
high = high * 10 + digit;
}
if (low > high)
goto einval;
high_set:
if (*subset) {
if (*subset != ' ')
goto einval;
subset++;
}
if (c >= low)
return c <= high;
}
return 0;
}
#else
int
main(void)
{
return 0; /* XXX add test */
}
#endif
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