freebsd-skq/usr.sbin/pkg_install/lib/str.c
1994-11-17 10:51:51 +00:00

99 lines
1.9 KiB
C

#ifndef lint
static const char *rcsid = "$Id";
#endif
/*
* FreeBSD install - a package for the installation and maintainance
* of non-core utilities.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Jordan K. Hubbard
* 18 July 1993
*
* Miscellaneous string utilities.
*
*/
#include "lib.h"
/* Return the filename portion of a path */
char *
basename_of(char *str)
{
char *basename = str + strlen(str) - 1;
while (basename != str && basename[-1] != '/')
--basename;
return basename;
}
/* Get a string parameter as a file spec or as a "contents follow -" spec */
char *
get_dash_string(char **str)
{
char *s = *str;
if (*s == '-')
*str = copy_string(s + 1);
else
*str = get_file_contents(s);
return *str;
}
/* Rather Obvious */
char *
copy_string(char *str)
{
char *ret;
if (!str)
ret = NULL;
else {
ret = (char *)malloc(strlen(str) + 1);
strcpy(ret, str);
}
return ret;
}
/* Return TRUE if 'str' ends in suffix 'suff' */
Boolean
suffix(char *str, char *suff)
{
char *idx;
Boolean ret = FALSE;
idx = rindex(str, '.');
if (idx && !strcmp(idx + 1, suff))
ret = TRUE;
return ret;
}
/* Assuming str has a suffix, brutally murder it! */
void
nuke_suffix(char *str)
{
char *idx;
idx = rindex(str, '.');
if (idx)
*idx = '\0'; /* Yow! Don't try this on a const! */
}
/* Lowercase a whole string */
void
str_lowercase(char *str)
{
while (*str) {
*str = tolower(*str);
++str;
}
}