char *
variable_expand (const char *line)
{
// fprintf(stderr, "variable expand\n");
// origin
return variable_expand_string(NULL, line, (long)-1);
/*
char* value = variable_expand_string(NULL, line, (long)-1);
fprintf(stderr, "value %s\n", value);
return value;
*/
}
static char *
variable_append (const char *name, unsigned int length,
const struct variable_set_list *set)
{
const struct variable *v;
char *buf = 0;
/* If there's nothing left to check, return the empty buffer. */
if (!set)
return initialize_variable_output ();
/* Try to find the variable in this variable set. */
v = lookup_variable_in_set (name, length, set->set);
/* If there isn't one, look to see if there's one in a set above us. */
if (!v)
return variable_append (name, length, set->next);
/* If this variable type is append, first get any upper values.
If not, initialize the buffer. */
if (v->append)
buf = variable_append (name, length, set->next);
else
buf = initialize_variable_output ();
/* Append this value to the buffer, and return it.
If we already have a value, first add a space. */
if (buf > variable_buffer)
buf = variable_buffer_output (buf, " ", 1);
#ifdef CONFIG_WITH_VALUE_LENGTH
assert (v->value_length == strlen (v->value));
#endif
/* Either expand it or copy it, depending. */
if (! v->recursive)
#ifdef CONFIG_WITH_VALUE_LENGTH
return variable_buffer_output (buf, v->value, v->value_length);
#else
return variable_buffer_output (buf, v->value, strlen (v->value));
#endif
#ifdef CONFIG_WITH_VALUE_LENGTH
variable_expand_string_2 (buf, v->value, v->value_length, &buf);
return buf;
#else
buf = variable_expand_string (buf, v->value, strlen (v->value));
return (buf + strlen (buf));
#endif
}
char *
variable_expand (const char *line)
{
#ifndef CONFIG_WITH_VALUE_LENGTH
return variable_expand_string(NULL, line, (long)-1);
#else /* CONFIG_WITH_VALUE_LENGTH */
char *s;
/* this function is abused a lot like this: variable_expand(""). */
if (!*line)
{
s = variable_buffer_output (initialize_variable_output (), "\0", 2);
return s - 2;
}
return variable_expand_string_2 (NULL, line, (long)-1, &s);
#endif /* CONFIG_WITH_VALUE_LENGTH */
}
static char *
variable_append (const char *name, unsigned int length,
const struct variable_set_list *set, int local)
{
const struct variable *v;
char *buf = 0;
/* If this set is local and the next is not a parent, then next is local. */
int nextlocal = local && set->next_is_parent == 0;
/* If there's nothing left to check, return the empty buffer. */
if (!set)
return initialize_variable_output ();
/* Try to find the variable in this variable set. */
v = lookup_variable_in_set (name, length, set->set);
/* If there isn't one, or this one is private, try the set above us. */
if (!v || (!local && v->private_var))
return variable_append (name, length, set->next, nextlocal);
/* If this variable type is append, first get any upper values.
If not, initialize the buffer. */
if (v->append)
buf = variable_append (name, length, set->next, nextlocal);
else
buf = initialize_variable_output ();
/* Append this value to the buffer, and return it.
If we already have a value, first add a space. */
if (buf > variable_buffer)
buf = variable_buffer_output (buf, " ", 1);
/* Either expand it or copy it, depending. */
if (! v->recursive)
return variable_buffer_output (buf, v->value, strlen (v->value));
buf = variable_expand_string (buf, v->value, strlen (v->value));
return (buf + strlen (buf));
}
char *
variable_expand (const char *line)
{
return variable_expand_string(NULL, line, (long)-1);
}