diff options
Diffstat (limited to 'newlib/libc/argz/envz_get.c')
-rw-r--r-- | newlib/libc/argz/envz_get.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/newlib/libc/argz/envz_get.c b/newlib/libc/argz/envz_get.c new file mode 100644 index 000000000..dae51bed7 --- /dev/null +++ b/newlib/libc/argz/envz_get.c @@ -0,0 +1,40 @@ +/* Copyright (C) 2002 by Red Hat, Incorporated. All rights reserved. + * + * Permission to use, copy, modify, and distribute this software + * is freely granted, provided that this notice is preserved. + */ + +#include <errno.h> +#include <sys/types.h> +#include <string.h> +#include <stdlib.h> +#include <envz.h> + +extern int buf_findstr(const char *str, char **buf, size_t *buf_len); + +char * +envz_get (const char *envz, size_t envz_len, const char *name) +{ + const char *buf_ptr = envz; + size_t buf_len = envz_len; + + while(buf_len) + { + if (buf_findstr(name, &buf_ptr, &buf_len)) + { + if (*buf_ptr == '=') + { + buf_ptr++; + return buf_ptr; + } + else + { + if (*buf_ptr == '\0') + /* NULL entry. */ + return NULL; + } + } + } + /* No matching entries found. */ + return NULL; +} |