From 4f9181b25b83d89cc4d095ba3602aa017ae20e18 Mon Sep 17 00:00:00 2001
From: Kacper Donat <kadet1090@gmail.com>
Date: Fri, 14 Dec 2018 20:12:41 +0100
Subject: [PATCH] aktualizacja

---
 index.c   |  2 ++
 index.h   |  2 ++
 openidx.c | 19 +++++++++++++++++++
 3 files changed, 23 insertions(+)

diff --git a/index.c b/index.c
index 56cce17..1c381f8 100644
--- a/index.c
+++ b/index.c
@@ -636,6 +636,8 @@ bool btree_update(btree_t *tree, record_key_t key, record_t record)
         return false;
     }
 
+    tape_write(tree->main, entry.location, &record, sizeof(record));
+
     return true;
 }
 
diff --git a/index.h b/index.h
index a98abdc..12665d9 100644
--- a/index.h
+++ b/index.h
@@ -5,6 +5,7 @@
 #include "record.h"
 #include "tape.h"
 #include <inttypes.h>
+#include <stdbool.h>
 
 #define SIZEOF_ENTRIES(n) (sizeof(btree_node_header_t) + (sizeof(btree_entry_t) - sizeof(page_t))*(n) + ((n) > 0 ? 1 : 0) * sizeof(page_t))
 #define NODE_SIZE(node) SIZEOF_ENTRIES(node->header.entries)
@@ -74,6 +75,7 @@ int btree_open(btree_t *tree, char* filename);
 
 page_t btree_insert(btree_t *tree, record_t record);
 page_t btree_remove(btree_t *tree, record_key_t key);
+bool   btree_update(btree_t *tree, record_key_t key, record_t record);
 page_t btree_find(btree_t *tree, record_key_t key, btree_entry_t *entry, btree_node_t *node, unsigned *index);
 
 btree_entry_t *btree_get_entry(btree_node_t* node, unsigned n);
diff --git a/openidx.c b/openidx.c
index db757cc..6e7dbcc 100644
--- a/openidx.c
+++ b/openidx.c
@@ -64,6 +64,7 @@ result_t records_command(const char* command, char* args);
 result_t find_command(const char* command, char* args);
 result_t read_command(const char* command, char* args);
 result_t delete_command(const char* command, char* args);
+result_t update_command(const char* command, char* args);
 result_t verbosity_command(const char* command, char* args);
 
 static command_t commands[] = {
@@ -76,6 +77,7 @@ static command_t commands[] = {
     { "find", "Finds record", find_command },
     { "read", "Reads record", read_command },
     { "delete", "Deletes record", delete_command },
+    { "update", "Updates record", update_command },
     { "verbosity", "Changes the verbosity", verbosity_command },
 };
 
@@ -188,6 +190,23 @@ result_t delete_command(const char* command, char* args)
     return RESULT_OK;
 }
 
+result_t update_command(const char* command, char* args)
+{
+    record_t record;
+
+    if (sscanf(args, "%u %lf %lf", &record.key, &record.x, &record.y) == 3) {
+        if (btree_update(&tree, record.key, record)) {
+            printf("Record %u updated.\n", record.key);
+        } else {
+            printf("404 Not found\n");
+        }
+    } else {
+        printf("Usage: find key\n");
+    }
+
+    return RESULT_OK;
+}
+
 result_t records_command(const char* command, char* args)
 {
     page_t page;