source: protocols/oscar/oscar_util.c @ 7f4016b

#include <aim.h>
#include <ctype.h>

int aimutil_putstr(u_char *dest, const char *src, int len)
{
        memcpy(dest, src, len);
        return len;
}

/*
 * Tokenizing functions.  Used to portably replace strtok/sep.
 *   -- DMP.
 *
 */
int aimutil_tokslen(char *toSearch, int index, char dl)
{
        int curCount = 1;
        char *next;
        char *last;
        int toReturn;

        last = toSearch;
        next = strchr(toSearch, dl);

        while(curCount < index && next != NULL) {
                curCount++;
                last = next + 1;
                next = strchr(last, dl);
        }

        if ((curCount < index) || (next == NULL))
                toReturn = strlen(toSearch) - (curCount - 1);
        else
                toReturn = next - toSearch - (curCount - 1);

        return toReturn;
}

int aimutil_itemcnt(char *toSearch, char dl)
{
        int curCount;
        char *next;

        curCount = 1;

        next = strchr(toSearch, dl);

        while(next != NULL) {
                curCount++;
                next = strchr(next + 1, dl);
        }

        return curCount;
}

char *aimutil_itemidx(char *toSearch, int index, char dl)
{
        int curCount;
        char *next;
        char *last;
        char *toReturn;

        curCount = 0;

        last = toSearch;
        next = strchr(toSearch, dl);

        while (curCount < index && next != NULL) {
                curCount++;
                last = next + 1;
                next = strchr(last, dl);
        }

        if (curCount < index) {
                toReturn = g_strdup("");
        }
        next = strchr(last, dl);

        if (curCount < index) {
                toReturn = g_strdup("");
        } else {
                if (next == NULL) {
                        toReturn = g_malloc((strlen(last) + 1) * sizeof(char));
                        strcpy(toReturn, last);
                } else {
                        toReturn = g_malloc((next - last + 1) * sizeof(char));
                        memcpy(toReturn, last, (next - last));
                        toReturn[next - last] = '\0';
                }
        }
        return toReturn;
}

/*
* int snlen(const char *)
* 
* This takes a screen name and returns its length without
* spaces.  If there are no spaces in the SN, then the 
* return is equal to that of strlen().
*
*/
static int aim_snlen(const char *sn)
{
        int i = 0;
        const char *curPtr = NULL;

        if (!sn)
                return 0;

        curPtr = sn;
        while ( (*curPtr) != (char) '\0') {
                if ((*curPtr) != ' ')
                i++;
                curPtr++;
        }

        return i;
}

/*
* int sncmp(const char *, const char *)
*
* This takes two screen names and compares them using the rules
* on screen names for AIM/AOL.  Mainly, this means case and space
* insensitivity (all case differences and spacing differences are
* ignored).
*
* Return: 0 if equal
*     non-0 if different
*
*/

int aim_sncmp(const char *sn1, const char *sn2)
{
        const char *curPtr1 = NULL, *curPtr2 = NULL;

        if (aim_snlen(sn1) != aim_snlen(sn2))
                return 1;

        curPtr1 = sn1;
        curPtr2 = sn2;
        while ( (*curPtr1 != (char) '\0') && (*curPtr2 != (char) '\0') ) {
                if ( (*curPtr1 == ' ') || (*curPtr2 == ' ') ) {
                        if (*curPtr1 == ' ')
                                curPtr1++;
                        if (*curPtr2 == ' ')
                                curPtr2++;
                } else {
                        if ( toupper(*curPtr1) != toupper(*curPtr2))
                                return 1;
                        curPtr1++;
                        curPtr2++;
                }
        }

        /* Should both be NULL */
        if (*curPtr1 != *curPtr2)
                return 1;

        return 0;
}