env: Use getenv_yesno() more generally
Move the getenv_yesno() to env_common.c and change most checks for
'y' or 'n' to use this helper.
Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/common/env_common.c b/common/env_common.c
index a960aa8..067fe3f 100644
--- a/common/env_common.c
+++ b/common/env_common.c
@@ -81,6 +81,20 @@
return &default_environment[index];
}
+/*
+ * Read an environment variable as a boolean
+ * Return -1 if variable does not exist (default to true)
+ */
+int getenv_yesno(const char *var)
+{
+ char *s = getenv(var);
+
+ if (s == NULL)
+ return -1;
+ return (*s == '1' || *s == 'y' || *s == 'Y' || *s == 't' || *s == 'T') ?
+ 1 : 0;
+}
+
void set_default_env(const char *s)
{
int flags = 0;