source: trunk/third/nmh/sbr/smatch.c @ 12455

/*
 * smatch.c -- match a switch (option)
 *
 * $Id: smatch.c,v 1.1.1.1 1999-02-07 18:14:10 danw Exp $
 */

#include <h/mh.h>


int
smatch(char *string, struct swit *swp)
{
    char *sp, *tcp;
    int firstone, len;
    struct swit *tp;

    firstone = UNKWNSW;

    if (!string)
        return firstone;
    len = strlen(string);

    for (tp = swp; tp->sw; tp++) {
        tcp = tp->sw;
        if (len < abs(tp->minchars))
            continue;                   /* no match */
        for (sp = string; *sp == *tcp++;) {
            if (*sp++ == '\0')
                return (tp - swp);      /* exact match */
        }
        if (*sp) {
            if (*sp != ' ')
                continue;               /* no match */
            if (*--tcp == '\0')
                return (tp - swp);      /* exact match */
        }
        if (firstone == UNKWNSW)
            firstone = tp - swp;
        else
            firstone = AMBIGSW;
    }

    return (firstone);
}