strv: add new macro STARTSWITH_SET()
This is to startswith() what PATH_STARTSWITH_SET() is to path_startswith(). Or in other words, checks if the specified string has any of the listed prefixes, and if so, returns the remainder of the string.
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@ -144,6 +144,18 @@ void strv_print(char **l);
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_x && strv_contains(STRV_MAKE(__VA_ARGS__), _x); \
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})
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#define STARTSWITH_SET(p, ...) \
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({ \
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const char *_p = (p); \
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char *_found = NULL, **_i; \
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STRV_FOREACH(_i, STRV_MAKE(__VA_ARGS__)) { \
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_found = startswith(_p, *_i); \
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if (_found) \
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break; \
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} \
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_found; \
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})
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#define FOREACH_STRING(x, ...) \
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for (char **_l = ({ \
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char **_ll = STRV_MAKE(__VA_ARGS__); \
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@ -56,6 +56,20 @@ static void test_strptr_in_set(void) {
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assert_se(!STRPTR_IN_SET(NULL, NULL));
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}
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static void test_startswith_set(void) {
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assert_se(!STARTSWITH_SET("foo", "bar", "baz", "waldo"));
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assert_se(!STARTSWITH_SET("foo", "bar"));
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assert_se(STARTSWITH_SET("abc", "a", "ab", "abc"));
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assert_se(STARTSWITH_SET("abc", "ax", "ab", "abc"));
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assert_se(STARTSWITH_SET("abc", "ax", "abx", "abc"));
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assert_se(!STARTSWITH_SET("abc", "ax", "abx", "abcx"));
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assert_se(streq_ptr(STARTSWITH_SET("foobar", "hhh", "kkk", "foo", "zzz"), "bar"));
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assert_se(streq_ptr(STARTSWITH_SET("foobar", "hhh", "kkk", "", "zzz"), "foobar"));
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assert_se(streq_ptr(STARTSWITH_SET("", "hhh", "kkk", "zzz", ""), ""));
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}
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static const char* const input_table_multiple[] = {
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"one",
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"two",
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@ -847,6 +861,7 @@ int main(int argc, char *argv[]) {
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test_specifier_printf();
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test_str_in_set();
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test_strptr_in_set();
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test_startswith_set();
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test_strv_foreach();
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test_strv_foreach_backwards();
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test_strv_foreach_pair();
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