1 files changed, 115 insertions, 0 deletions
diff --git a/tools/lint/cmd_extdata.c b/tools/lint/cmd_extdata.c
new file mode 100644
index 0000000..fc7ac7b
--- /dev/null
+++ b/tools/lint/cmd_extdata.c
@@ -0,0 +1,115 @@
+/**
+ * @file cmd_extdata.c
+ * @author Adam Piecek <piecek@cesnet.cz>
+ * @brief 'extdata' 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
+#define _POSIX_C_SOURCE 200809L /* strdup */
+
+#include "cmd.h"
+
+#include <getopt.h>
+#include <stdint.h>
+#include <stdio.h>
+
+#include "libyang.h"
+
+#include "common.h"
+#include "yl_opt.h"
+
+char *filename;
+
+void
+cmd_extdata_free(void)
+{
+    free(filename);
+    filename = NULL;
+}
+
+void
+cmd_extdata_help(void)
+{
+    printf("Usage: extdata [--clear] [<extdata-file-path>]\n"
+            "                 File containing the specific data required by an extension. Required by\n"
+            "                 the schema-mount extension, for example, when the operational data are\n"
+            "                 expected in the file. File format is guessed.\n");
+}
+
+int
+cmd_extdata_opt(struct yl_opt *yo, const char *cmdline, char ***posv, int *posc)
+{
+    int rc = 0, argc = 0;
+    int opt, opt_index;
+    struct option options[] = {
+        {"clear", no_argument, NULL, 'c'},
+        {"help", no_argument, NULL, 'h'},
+        {NULL, 0, NULL, 0}
+    };
+
+    if ((rc = parse_cmdline(cmdline, &argc, &yo->argv))) {
+        return rc;
+    }
+
+    while ((opt = getopt_long(argc, yo->argv, commands[CMD_EXTDATA].optstring, options, &opt_index)) != -1) {
+        switch (opt) {
+        case 'c':
+            yo->extdata_unset = 1;
+            free(filename);
+            filename = NULL;
+            break;
+        case 'h':
+            cmd_extdata_help();
+            return 1;
+        default:
+            YLMSG_E("Unknown option.");
+            return 1;
+        }
+    }
+
+    *posv = &yo->argv[optind];
+    *posc = argc - optind;
+
+    return 0;
+}
+
+int
+cmd_extdata_dep(struct yl_opt *yo, int posc)
+{
+    if (!yo->extdata_unset && (posc > 1)) {
+        YLMSG_E("Only one file must be entered.");
+        return 1;
+    }
+
+    return 0;
+}
+
+int
+cmd_extdata_exec(struct ly_ctx **ctx, struct yl_opt *yo, const char *posv)
+{
+    if (yo->extdata_unset) {
+        ly_ctx_set_ext_data_clb(*ctx, NULL, NULL);
+    } else if (!yo->extdata_unset && !posv) {
+        /* no argument - print the current file */
+        printf("%s\n", filename ? filename : "No file set.");
+    } else if (posv) {
+        /* set callback providing run-time extension instance data */
+        free(filename);
+        filename = strdup(posv);
+        if (!filename) {
+            YLMSG_E("Memory allocation error.");
+            return 1;
+        }
+        ly_ctx_set_ext_data_clb(*ctx, ext_data_clb, filename);
+    }
+
+    return 0;
+}