Home

Some test cases:

#include <stdio.h>
#include "stralnumcmp.h"

#define TEST(_cond) do {                            \
    if (_cond)                                      \
            printf("    %-50s ... ok\n", #_cond);   \
    else                                            \
            printf("    %-50s ... ng\n", #_cond);   \
} while (0)

int
main(int argc, char *argv[])
{
    // http://stackoverflow.com/questions/10202794/compare-two-alphanumeric-string
    printf("test cases from stackoverflow.com:\n");
    TEST(stralnumcmp("a5",  "a11") < 0);            // because 5 is less than 11
    TEST(stralnumcmp("6xxx", "007asdf") < 0);       // because 6 < 7
    TEST(stralnumcmp("00042Q", "42s") < 0); // because Q < s alphabetically
    TEST(stralnumcmp("6   8", "006 9") < 0);        // because 8 < 9

    // https://code.google.com/p/android-source-browsing/source/browse/strverscmp.c?repo=platform--external--blktrace
    printf("Test cases from strverscmp:\n");

    TEST(stralnumcmp("no digit", "no digit") == 0);
    TEST(stralnumcmp("item#99", "item#100") < 0);
    TEST(stralnumcmp("alpha1", "alpha001") > 0);
    TEST(stralnumcmp("part1_f012", "part1_f01") > 0);
    TEST(stralnumcmp("foo.009", "foo.0") < 0);
}

Results:

test cases from stackoverflow.com:
    stralnumcmp("a5", "a11") < 0                       ... ok
    stralnumcmp("6xxx", "007asdf") < 0                 ... ok
    stralnumcmp("00042Q", "42s") < 0                   ... ok
    stralnumcmp("6   8", "006 9") < 0                  ... ng
Test cases from strverscmp:
    stralnumcmp("no digit", "no digit") == 0           ... ok
    stralnumcmp("item#99", "item#100") < 0             ... ok
    stralnumcmp("alpha1", "alpha001") > 0              ... ng
    stralnumcmp("part1_f012", "part1_f01") > 0         ... ok
    stralnumcmp("foo.009", "foo.0") < 0                ... ng