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core/string: Add a string_length() function 

This is a wrapper around strlen(), but checks for a NULL pointer first.

Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>
This commit is contained in:
Anna Schumaker 2016-03-29 08:11:49 -04:00
parent 096c0e8eaa
commit 98faba93d1
2 changed files with 15 additions and 0 deletions
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6
include/core/string.h
View File

@ -32,4 +32,10 @@ gchar *string_lowercase(const gchar *);
*/
int string_compare(const gchar *, const gchar *);
/* Return the length of the string, with NULL checks */
static inline int string_length(const gchar *str)
{
return str ? strlen(str) : 0;
}
#endif /* OCARINA_CORE_STRING_H */

9
tests/core/string.c
View File

@ -101,10 +101,19 @@ void test_compare()
test_equal(string_compare("A", ""), -1);
}
void test_length()
{
test_equal(string_length(NULL), 0);
test_equal(string_length(""), 0);
test_equal(string_length("a"), 1);
test_equal(string_length("abcdefghijklmnopqrstuvwxyz"), 26);
}
DECLARE_UNIT_TESTS(
UNIT_TEST("Seconds to String", test_sec2str),
UNIT_TEST("Seconds to String (Long)", test_sec2str_long),
UNIT_TEST("Date to String", test_date),
UNIT_TEST("String Lowercase", test_lowercase),
UNIT_TEST("String Comparison", test_compare),
UNIT_TEST("String Length", test_length),
);