JBVariable *
jb_variable_get_variable_or_error (const char *name)
{
JBVariable *variable;
g_return_val_if_fail(name != NULL, NULL);
variable = jb_variable_get_variable(name);
if (variable == NULL)
g_error("variable \"%s\" does not exist", name);
return variable;
}
void
jb_check_host_system (void)
{
char *output;
gboolean status = FALSE;
if (jb_variable_get_variable("host-cpu") != NULL)
return; /* already checked */
jb_message_checking("the host system type");
if (jb_exec(&output, NULL, "jbsrc/tools/config.sub `jbsrc/tools/config.guess`"))
{
char **fields;
int len;
fields = g_strsplit(output, "-", 0);
len = g_strv_length(fields);
if (len == 3)
{
jb_variable_set_string("host-cpu", fields[0]);
jb_variable_set_string("host-manufacturer", fields[1]);
jb_variable_set_string("host-kernel", NULL);
jb_variable_set_string("host-os", fields[2]);
status = TRUE;
}
else if (len == 4)
{
jb_variable_set_string("host-cpu", fields[0]);
jb_variable_set_string("host-manufacturer", fields[1]);
jb_variable_set_string("host-kernel", fields[2]);
jb_variable_set_string("host-os", fields[3]);
status = TRUE;
}
g_strfreev(fields);
}
if (status)
jb_message_result_string(output);
else
jb_message_result_string("unknown");
g_free(output);
if (! status)
jb_error("unable to determine host system type");
}
JBVariable *
ensure_variable (JBVariableType *type, const char *name)
{
JBVariable *variable;
g_return_val_if_fail(name != NULL, NULL);
variable = jb_variable_get_variable(name);
if (variable == NULL)
{
variable = variable_new(type, name, NULL, NULL, 0);
add_variable(variable);
}
return variable;
}
static char *
get_expansion (const char *varname, GHashTable *extra_variables)
{
JBVariable *variable;
if (extra_variables != NULL)
{
const char *extra_value;
if (g_hash_table_lookup_extended(extra_variables, varname, NULL, (gpointer) &extra_value))
return g_strdup(extra_value != NULL ? extra_value : "");
}
variable = jb_variable_get_variable(varname);
if (variable != NULL)
return jb_variable_evaluate(variable);
jb_error("unknown variable \"%s\"", varname);
}
static void
handle_variable (const char *pair)
{
char *name;
char *value;
JBVariable *variable;
GError *err = NULL;
if (! parse_variable(pair, &name, &value))
jb_error("invalid variable specification \"%s\"", pair);
variable = jb_variable_get_variable(name);
if (variable == NULL || (variable->flags & JB_VARIABLE_USER_SETTABLE) == 0)
jb_error("unknown variable \"%s\"", name);
if (! jb_variable_set_from_string(variable, value, &err))
jb_error("invalid value \"%s\" for %s variable \"%s\": %s",
value,
variable->type->name,
name,
err->message);
variable->user_set = TRUE;
}
