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/*
* smatch.c -- match a switch (option)
*
* This code is Copyright (c) 2002, by the authors of nmh. See the
* COPYRIGHT file in the root directory of the nmh distribution for
* complete copyright information.
*/
#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->swret; /* exact match */
}
if (*sp) {
if (*sp != ' ')
continue; /* no match */
if (*--tcp == '\0')
return tp->swret; /* exact match */
}
if (firstone == UNKWNSW)
firstone = tp->swret;
else
firstone = AMBIGSW;
}
return (firstone);
}
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