From b41d53792c4c4e4abd6d810b2765d865775f5104 Mon Sep 17 00:00:00 2001
From: Aidan MacDonald <amachronic@protonmail.com>
Date: Tue, 13 Apr 2021 16:58:15 +0100
Subject: jztool: New utility for installing a bootloader on FiiO M3K

At present, this is just a command line tool for Linux only.

Integrating this with the Rockbox utility and porting to other
platforms should be straightforward; the README contains more
information.

Change-Id: Ie66fc837a02ab13c878925360cabc9805597548a
---
 rbutil/jztool/src/paramlist.c | 135 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 rbutil/jztool/src/paramlist.c

(limited to 'rbutil/jztool/src/paramlist.c')

diff --git a/rbutil/jztool/src/paramlist.c b/rbutil/jztool/src/paramlist.c
new file mode 100644
index 0000000000..05bcf97a13
--- /dev/null
+++ b/rbutil/jztool/src/paramlist.c
@@ -0,0 +1,135 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2021 Aidan MacDonald
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "jztool.h"
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+struct jz_paramlist {
+    int size;
+    char** keys;
+    char** values;
+};
+
+static int jz_paramlist_extend(jz_paramlist* pl, int count)
+{
+    int nsize = pl->size + count;
+
+    /* Reallocate key list */
+    char** nkeys = realloc(pl->keys, nsize * sizeof(char*));
+    if(!nkeys)
+        return JZ_ERR_OUT_OF_MEMORY;
+
+    for(int i = pl->size; i < nsize; ++i)
+        nkeys[i] = NULL;
+
+    pl->keys = nkeys;
+
+    /* Reallocate value list */
+    char** nvalues = realloc(pl->values, nsize * sizeof(char*));
+    if(!nvalues)
+        return JZ_ERR_OUT_OF_MEMORY;
+
+    for(int i = pl->size; i < nsize; ++i)
+        nvalues[i] = NULL;
+
+    pl->values = nvalues;
+
+    pl->size = nsize;
+    return JZ_SUCCESS;
+}
+
+jz_paramlist* jz_paramlist_new(void)
+{
+    jz_paramlist* pl = malloc(sizeof(struct jz_paramlist));
+    if(!pl)
+        return NULL;
+
+    pl->size = 0;
+    pl->keys = NULL;
+    pl->values = NULL;
+    return pl;
+}
+
+void jz_paramlist_free(jz_paramlist* pl)
+{
+    for(int i = 0; i < pl->size; ++i) {
+        free(pl->keys[i]);
+        free(pl->values[i]);
+    }
+
+    if(pl->size > 0) {
+        free(pl->keys);
+        free(pl->values);
+    }
+
+    free(pl);
+}
+
+int jz_paramlist_set(jz_paramlist* pl, const char* param, const char* value)
+{
+    int pos = -1;
+    for(int i = 0; i < pl->size; ++i) {
+        if(!pl->keys[i] || !strcmp(pl->keys[i], param)) {
+            pos = i;
+            break;
+        }
+    }
+
+    if(pos == -1) {
+        pos = pl->size;
+        int rc = jz_paramlist_extend(pl, 1);
+        if(rc < 0)
+            return rc;
+    }
+
+    bool need_key = (pl->keys[pos] == NULL);
+    if(need_key) {
+        char* newparam = strdup(param);
+        if(!newparam)
+            return JZ_ERR_OUT_OF_MEMORY;
+
+        pl->keys[pos] = newparam;
+    }
+
+    char* newvalue = strdup(value);
+    if(!newvalue) {
+        if(need_key) {
+            free(pl->keys[pos]);
+            pl->keys[pos] = NULL;
+        }
+
+        return JZ_ERR_OUT_OF_MEMORY;
+    }
+
+    pl->values[pos] = newvalue;
+    return JZ_SUCCESS;
+}
+
+const char* jz_paramlist_get(jz_paramlist* pl, const char* param)
+{
+    for(int i = 0; i < pl->size; ++i)
+        if(pl->keys[i] && !strcmp(pl->keys[i], param))
+            return pl->values[i];
+
+    return NULL;
+}
-- 
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