diff options
author | Nicholas Marriott <nicholas.marriott@gmail.com> | 2007-10-31 14:26:26 +0000 |
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committer | Nicholas Marriott <nicholas.marriott@gmail.com> | 2007-10-31 14:26:26 +0000 |
commit | 08d9f46aae69e942a5db9a20463c27ac3c0ebbb8 (patch) | |
tree | 9eb92bf6763c7f24c0c1a4003b39f650f60b33d6 /compat/strtonum.c | |
parent | 48ad0431fb46871cb4a045b275c36ff524cc0fa0 (diff) |
Make it build/run on Linux.
Diffstat (limited to 'compat/strtonum.c')
-rw-r--r-- | compat/strtonum.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/compat/strtonum.c b/compat/strtonum.c new file mode 100644 index 00000000..cf1f9d38 --- /dev/null +++ b/compat/strtonum.c @@ -0,0 +1,68 @@ +/* $Id: strtonum.c,v 1.1 2007-10-31 14:26:26 nicm Exp $ */ +/* $OpenBSD: strtonum.c,v 1.6 2004/08/03 19:38:01 millert Exp $ */ + +/* + * Copyright (c) 2004 Ted Unangst and Todd Miller + * All rights reserved. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <errno.h> +#include <limits.h> +#include <stdlib.h> + +#include "tmux.h" + +#define INVALID 1 +#define TOOSMALL 2 +#define TOOLARGE 3 + +long long +strtonum(const char *numstr, long long minval, long long maxval, + const char **errstrp) +{ + long long ll = 0; + char *ep; + int error = 0; + struct errval { + const char *errstr; + int err; + } ev[4] = { + { NULL, 0 }, + { "invalid", EINVAL }, + { "too small", ERANGE }, + { "too large", ERANGE }, + }; + + ev[0].err = errno; + errno = 0; + if (minval > maxval) + error = INVALID; + else { + ll = strtoll(numstr, &ep, 10); + if (numstr == ep || *ep != '\0') + error = INVALID; + else if ((ll == LLONG_MIN && errno == ERANGE) || ll < minval) + error = TOOSMALL; + else if ((ll == LLONG_MAX && errno == ERANGE) || ll > maxval) + error = TOOLARGE; + } + if (errstrp != NULL) + *errstrp = ev[error].errstr; + errno = ev[error].err; + if (error) + ll = 0; + + return (ll); +} |