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/**
* @file yl_schema_features.c
* @author Adam Piecek <piecek@cesnet.cz>
* @brief Control features for the schema.
*
* Copyright (c) 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 <errno.h>
#include <stdlib.h> /* calloc */
#include <string.h> /* strcmp */
#include "compat.h" /* strndup */
#include "set.h" /* ly_set */
#include "common.h"
#include "yl_schema_features.h"
void
yl_schema_features_free(void *flist)
{
struct yl_schema_features *rec = (struct yl_schema_features *)flist;
if (rec) {
free(rec->mod_name);
if (rec->features) {
for (uint32_t u = 0; rec->features[u]; ++u) {
free(rec->features[u]);
}
free(rec->features);
}
free(rec);
}
}
void
get_features(const struct ly_set *fset, const char *module, const char ***features)
{
/* get features list for this module */
for (uint32_t u = 0; u < fset->count; ++u) {
struct yl_schema_features *sf = (struct yl_schema_features *)fset->objs[u];
if (!strcmp(module, sf->mod_name)) {
/* matched module - explicitly set features */
*features = (const char **)sf->features;
sf->applied = 1;
return;
}
}
/* features not set so disable all */
*features = NULL;
}
int
parse_features(const char *fstring, struct ly_set *fset)
{
struct yl_schema_features *rec = NULL;
uint32_t count;
char *p, **fp;
rec = calloc(1, sizeof *rec);
if (!rec) {
YLMSG_E("Unable to allocate features information record (%s).", strerror(errno));
goto error;
}
/* fill the record */
p = strchr(fstring, ':');
if (!p) {
YLMSG_E("Invalid format of the features specification (%s).", fstring);
goto error;
}
rec->mod_name = strndup(fstring, p - fstring);
count = 0;
while (p) {
size_t len = 0;
char *token = p + 1;
p = strchr(token, ',');
if (!p) {
/* the last item, if any */
len = strlen(token);
} else {
len = p - token;
}
if (len) {
fp = realloc(rec->features, (count + 1) * sizeof *rec->features);
if (!fp) {
YLMSG_E("Unable to store features list information (%s).", strerror(errno));
goto error;
}
rec->features = fp;
fp = &rec->features[count++]; /* array item to set */
(*fp) = strndup(token, len);
}
}
/* terminating NULL */
fp = realloc(rec->features, (count + 1) * sizeof *rec->features);
if (!fp) {
YLMSG_E("Unable to store features list information (%s).", strerror(errno));
goto error;
}
rec->features = fp;
rec->features[count++] = NULL;
/* Store record to the output set. */
if (ly_set_add(fset, rec, 1, NULL)) {
YLMSG_E("Unable to store features information (%s).", strerror(errno));
goto error;
}
rec = NULL;
return 0;
error:
yl_schema_features_free(rec);
return -1;
}
void
print_features(struct ly_out *out, const struct lys_module *mod)
{
struct lysp_feature *f;
uint32_t idx;
size_t max_len, len;
ly_print(out, "%s:\n", mod->name);
/* get max len, so the statuses of all the features will be aligned */
max_len = 0, idx = 0, f = NULL;
while ((f = lysp_feature_next(f, mod->parsed, &idx))) {
len = strlen(f->name);
max_len = (max_len > len) ? max_len : len;
}
if (!max_len) {
ly_print(out, "\t(none)\n");
return;
}
/* print features */
idx = 0, f = NULL;
while ((f = lysp_feature_next(f, mod->parsed, &idx))) {
ly_print(out, "\t%-*s (%s)\n", (int)max_len, f->name, lys_feature_value(mod, f->name) ? "off" : "on");
}
}
void
print_feature_param(struct ly_out *out, const struct lys_module *mod)
{
struct lysp_feature *f = NULL;
uint32_t idx = 0;
uint8_t first = 1;
ly_print(out, " -F %s:", mod->name);
while ((f = lysp_feature_next(f, mod->parsed, &idx))) {
if (first) {
ly_print(out, "%s", f->name);
first = 0;
} else {
ly_print(out, ",%s", f->name);
}
}
}
void
print_all_features(struct ly_out *out, const struct ly_ctx *ctx, uint8_t feature_param)
{
uint32_t i;
struct lys_module *mod;
uint8_t first;
/* Print features for all implemented modules. */
first = 1;
i = 0;
while ((mod = ly_ctx_get_module_iter(ctx, &i)) != NULL) {
if (!mod->implemented) {
continue;
}
if (first) {
print_features(out, mod);
first = 0;
} else {
ly_print(out, "\n");
print_features(out, mod);
}
}
if (!feature_param) {
return;
}
ly_print(out, "\n");
/* Print features for all implemented modules in 'feature-param' format. */
i = 0;
while ((mod = ly_ctx_get_module_iter(ctx, &i)) != NULL) {
if (mod->implemented) {
print_feature_param(out, mod);
}
}
}
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