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/*
20140429
20241208 - reformated using clang-format
Jan Mojzis
Public domain.
*/
#include "e.h"
#include "loginshell.h"
/*
The 'loginshell()' function converts shell path
into -shell name. For example:
'/bin/sh' -> '-sh'
'/usr/pkg/bin/bash' -> '-bash'
*/
int loginshell(char *out, long long outlen, const char *in) {
long long len, pos = -1;
if (!out || !in || outlen < 2) {
errno = EINVAL;
return 0;
}
for (len = 0; in[len]; ++len)
if (in[len] == '/') pos = len;
in += pos + 1;
len -= pos + 1;
if (len > outlen - 2) len = outlen - 2; /* truncate name */
*out++ = '-';
while (len > 0) {
*out++ = *in++;
--len;
}
*out = 0;
return 1;
}
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