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/**
* @file cmd_list.c
* @author Michal Vasko <mvasko@cesnet.cz>
* @author Radek Krejci <rkrejci@cesnet.cz>
* @author Adam Piecek <piecek@cesnet.cz>
* @brief 'list' command of the libyang's yanglint tool.
*
* Copyright (c) 2015-2023 CESNET, z.s.p.o.
*
* This source code is licensed under BSD 3-Clause License (the "License").
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://opensource.org/licenses/BSD-3-Clause
*/
#define _GNU_SOURCE
#include "cmd.h"
#include <getopt.h>
#include <stdio.h>
#include <strings.h>
#include "libyang.h"
#include "common.h"
#include "yl_opt.h"
void
cmd_list_help(void)
{
printf("Usage: list [-f (xml | json)]\n"
" Print the list of modules in the current context\n\n"
" -f FORMAT, --format=FORMAT\n"
" Print the list as ietf-yang-library data in the specified\n"
" data FORMAT. If format not specified, a simple list is\n"
" printed with an indication of imported (i) / implemented (I)\n"
" modules.\n");
}
int
cmd_list_opt(struct yl_opt *yo, const char *cmdline, char ***posv, int *posc)
{
int rc = 0, argc = 0;
int opt, opt_index;
struct option options[] = {
{"format", required_argument, NULL, 'f'},
{"help", no_argument, NULL, 'h'},
{NULL, 0, NULL, 0}
};
yo->data_out_format = LYD_UNKNOWN;
if ((rc = parse_cmdline(cmdline, &argc, &yo->argv))) {
return rc;
}
while ((opt = getopt_long(argc, yo->argv, commands[CMD_LIST].optstring, options, &opt_index)) != -1) {
switch (opt) {
case 'f': /* --format */
if (!strcasecmp(optarg, "xml")) {
yo->data_out_format = LYD_XML;
} else if (!strcasecmp(optarg, "json")) {
yo->data_out_format = LYD_JSON;
} else {
YLMSG_E("Unknown output format %s.", optarg);
cmd_list_help();
return 1;
}
break;
case 'h':
cmd_list_help();
return 1;
default:
YLMSG_E("Unknown option.");
return 1;
}
}
*posv = &yo->argv[optind];
*posc = argc - optind;
return 0;
}
int
cmd_list_dep(struct yl_opt *yo, int posc)
{
if (posc) {
YLMSG_E("No positional arguments are allowed.");
return 1;
}
if (ly_out_new_file(stdout, &yo->out)) {
YLMSG_E("Unable to print to the standard output.");
return 1;
}
yo->out_stdout = 1;
return 0;
}
/**
* @brief Print yang library data.
*
* @param[in] ctx Context for libyang.
* @param[in] data_out_format Output format of printed data.
* @param[in] out Output handler.
* @return 0 on success.
*/
static int
print_yang_lib_data(struct ly_ctx *ctx, LYD_FORMAT data_out_format, struct ly_out *out)
{
struct lyd_node *ylib;
if (ly_ctx_get_yanglib_data(ctx, &ylib, "%u", ly_ctx_get_change_count(ctx))) {
YLMSG_E("Getting context info (ietf-yang-library data) failed. If the YANG module is missing or not implemented, "
"use an option to add it internally.");
return 1;
}
lyd_print_all(out, ylib, data_out_format, 0);
lyd_free_all(ylib);
return 0;
}
int
cmd_list_exec(struct ly_ctx **ctx, struct yl_opt *yo, const char *posv)
{
(void) posv;
uint32_t idx = 0, has_modules = 0;
const struct lys_module *mod;
if (yo->data_out_format != LYD_UNKNOWN) {
/* ietf-yang-library data are printed in the specified format */
if (print_yang_lib_data(*ctx, yo->data_out_format, yo->out)) {
return 1;
}
return 0;
}
/* iterate schemas in context and provide just the basic info */
ly_print(yo->out, "List of the loaded models:\n");
while ((mod = ly_ctx_get_module_iter(*ctx, &idx))) {
has_modules++;
/* conformance print */
if (mod->implemented) {
ly_print(yo->out, " I");
} else {
ly_print(yo->out, " i");
}
/* module print */
ly_print(yo->out, " %s", mod->name);
if (mod->revision) {
ly_print(yo->out, "@%s", mod->revision);
}
/* submodules print */
if (mod->parsed && mod->parsed->includes) {
uint64_t u = 0;
ly_print(yo->out, " (");
LY_ARRAY_FOR(mod->parsed->includes, u) {
ly_print(yo->out, "%s%s", !u ? "" : ",", mod->parsed->includes[u].name);
if (mod->parsed->includes[u].rev[0]) {
ly_print(yo->out, "@%s", mod->parsed->includes[u].rev);
}
}
ly_print(yo->out, ")");
}
/* finish the line */
ly_print(yo->out, "\n");
}
if (!has_modules) {
ly_print(yo->out, "\t(none)\n");
}
ly_print_flush(yo->out);
return 0;
}
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