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util: add a safe_atoi_base() function

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For parsing hex numbers

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2017-08-30 15:52:41 +10:00
parent e242ad219a
commit 635dc7d790
2 changed files with 83 additions and 2 deletions
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12
src/libinput-util.h
View file

@ -473,13 +473,15 @@ tv2us(const struct timeval *tv)
}
static inline bool
safe_atoi(const char *str, int *val)
safe_atoi_base(const char *str, int *val, int base)
{
char *endptr;
long v;
assert(base == 10 || base == 16 || base == 8);
errno = 0;
v = strtol(str, &endptr, 10);
v = strtol(str, &endptr, base);
if (errno > 0)
return false;
if (str == endptr)
@ -494,6 +496,12 @@ safe_atoi(const char *str, int *val)
return true;
}
static inline bool
safe_atoi(const char *str, int *val)
{
return safe_atoi_base(str, val, 10);
}
static inline bool
safe_atod(const char *str, double *val)
{

73
test/test-misc.c
View file

@ -1127,6 +1127,77 @@ START_TEST(safe_atoi_test)
}
END_TEST
START_TEST(safe_atoi_base_16_test)
{
struct atoi_test tests[] = {
{ "10", true, 0x10 },
{ "20", true, 0x20 },
{ "-1", true, -1 },
{ "0x10", true, 0x10 },
{ "0xff", true, 0xff },
{ "abc", true, 0xabc },
{ "-10", true, -0x10 },
{ "0x0", true, 0 },
{ "0", true, 0 },
{ "0x-99", false, 0 },
{ "0xak", false, 0 },
{ "0x", false, 0 },
{ "x10", false, 0 },
{ NULL, false, 0 }
};
int v;
bool success;
for (int i = 0; tests[i].str != NULL; i++) {
v = 0xad;
success = safe_atoi_base(tests[i].str, &v, 16);
ck_assert(success == tests[i].success);
if (success)
ck_assert_int_eq(v, tests[i].val);
else
ck_assert_int_eq(v, 0xad);
}
}
END_TEST
START_TEST(safe_atoi_base_8_test)
{
struct atoi_test tests[] = {
{ "7", true, 07 },
{ "10", true, 010 },
{ "20", true, 020 },
{ "-1", true, -1 },
{ "010", true, 010 },
{ "0ff", false, 0 },
{ "abc", false, 0},
{ "0xabc", false, 0},
{ "-10", true, -010 },
{ "0", true, 0 },
{ "00", true, 0 },
{ "0x0", false, 0 },
{ "0x-99", false, 0 },
{ "0xak", false, 0 },
{ "0x", false, 0 },
{ "x10", false, 0 },
{ NULL, false, 0 }
};
int v;
bool success;
for (int i = 0; tests[i].str != NULL; i++) {
v = 0xad;
success = safe_atoi_base(tests[i].str, &v, 8);
ck_assert(success == tests[i].success);
if (success)
ck_assert_int_eq(v, tests[i].val);
else
ck_assert_int_eq(v, 0xad);
}
}
END_TEST
struct atod_test {
char *str;
bool success;
@ -1380,6 +1451,8 @@ litest_setup_tests_misc(void)
litest_add_no_device("misc:parser", range_prop_parser);
litest_add_no_device("misc:parser", palm_pressure_parser);
litest_add_no_device("misc:parser", safe_atoi_test);
litest_add_no_device("misc:parser", safe_atoi_base_16_test);
litest_add_no_device("misc:parser", safe_atoi_base_8_test);
litest_add_no_device("misc:parser", safe_atod_test);
litest_add_no_device("misc:parser", strsplit_test);
litest_add_no_device("misc:time", time_conversion);