amxb_expr_funcs.c

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#include <stdlib.h>
 
#include <amxc/amxc.h>
#include <amxp/amxp.h>
 
#include <amxd/amxd_common.h>
#include <amxd/amxd_dm.h>
#include <amxd/amxd_object.h>
#include <amxd/amxd_path.h>
 
#include <amxb/amxb.h>
#include <amxb/amxb_operators.h>
#include "amxb/amxb_be_intf.h"
 
#include "amxb_priv.h"
 
typedef struct _amxb_resolve {
    amxc_var_t* ret;
    amxd_path_t* path;
} amxb_resolve_t;
 
static int amxb_ba_resolve_path(amxb_bus_ctx_t* bus_ctx,
                                UNUSED const amxc_var_t* args,
                                void* priv) {
    int retval = -1;
    amxb_resolve_t* resolver = (amxb_resolve_t*) priv;
    uint32_t caps = 0;
 
    caps = amxb_be_get_capabilities(bus_ctx);
    if(((caps & AMXB_BE_DISCOVER_RESOLVE) != AMXB_BE_DISCOVER_RESOLVE)) {
        goto exit;
    }
    retval = amxb_resolve(bus_ctx, resolver->path, resolver->ret);
 
exit:
    return retval;
}
 
static void amxb_ba_get_all_matching(amxd_path_t* path,
                                     amxc_var_t* ret) {
    amxc_var_t args;
    amxb_resolve_t resolver = {
        .ret = ret,
        .path = path
    };
    amxc_var_init(&args);
    amxc_var_set_type(&args, AMXC_VAR_ID_HTABLE);
 
    amxb_be_for_all_connections(amxb_ba_resolve_path, &args, &resolver);
 
    amxc_var_clean(&args);
}
 
static amxp_expr_status_t amxb_ba_value_spath(UNUSED amxp_expr_t* expr,
                                              amxc_var_t* args,
                                              amxc_var_t* ret) {
 
    amxp_expr_status_t status = amxp_expr_status_invalid_value;
    amxc_llist_it_t* it = amxc_llist_get_first(&args->data.vl);
    amxc_var_t* data = amxc_var_from_llist_it(it);
    const char* str_path = NULL;
    amxd_path_t path;
 
    amxd_path_init(&path, NULL);
 
    when_null(it, exit);
    when_true(amxc_var_type_of(data) != AMXC_VAR_ID_CSTRING, exit);
 
    str_path = amxc_var_constcast(cstring_t, data);
    when_failed(amxd_path_setf(&path, false, "%s", str_path), exit);
 
    amxc_var_set_type(ret, AMXC_VAR_ID_LIST);
    amxb_ba_get_all_matching(&path, ret);
 
    status = amxp_expr_status_ok;
 
exit:
    amxd_path_clean(&path);
    return status;
}
 
CONSTRUCTOR_LVL(102) static void amxp_expr_functions_init(void) {
    amxp_expr_add_value_fn("search_path", amxb_ba_value_spath);
}