void expand(char s1[],char s2[])
{
int i,j;
s2[0]=s1[0];
for (i=j=1;s1[i]!='\0';i++)
{
switch (s1[i])
{
case '-':
if (validrange(s1[i-1],s1[i+1]))
{
while (s2[j-1]<s1[i+1])
{
s2[j]=s2[j-1]+1;
j++;
}
i++;
}
else
s2[j++]=s1[i];break;
default:
s2[j++]=s1[i];break;
}
s2[j]='\0';
}
}
/* expand: expands shorthand notations in the string s1 into the
equivalent complete list in s2 */
void expand(char s1[], char s2[])
{
int i, j;
char tmp;
int dash;
dash = 0;
for (i = j = 0; s1[i] != '\0'; ++i) {
if (s1[i] == '-') {
if (i == 0 || s1[i+1] == '\0') {
/* '-' is leading or trailing, so just copy it. */
s2[j++] = s1[i];
} else {
/* check if this is a valid range. */
if (validrange(s1[i-1], s1[i+1])) {
while (s2[j-1] < s1[i+1]) {
s2[j] = s2[j-1] + 1;
j++;
}
/* skip next character we already printed it. */
++i;
} else {
s2[j++] = s1[i];
}
}
} else {
s2[j++] = s1[i];
}
}
/* End the string with a NUL byte */
s2[j] = '\0';
}
