From 4be782ddd683c32cd003d1323ff169db0bd9d59f Mon Sep 17 00:00:00 2001
From: Kacper Donat <kadet1090@gmail.com>
Date: Fri, 14 Dec 2018 21:11:21 +0100
Subject: [PATCH] =?UTF-8?q?odczyt=20z=20warto=C5=9Bciami?=
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---
 index.c   | 13 +++++++++++++
 index.h   |  2 ++
 readidx.c | 24 ++++++++++++++++++------
 3 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/index.c b/index.c
index 1c381f8..c9d6e14 100644
--- a/index.c
+++ b/index.c
@@ -650,6 +650,19 @@ btree_entry_t *btree_get_entry(btree_node_t* node, unsigned n)
     return (btree_entry_t*)(node->entries + NODE_ENTRY_OFFSET(n));
 }
 
+page_t btree_read_record(btree_t *tree, record_key_t key, record_t *record)
+{
+    btree_entry_t entry;
+    page_t        page = btree_find(tree, key, &entry, NULL, NULL);
+
+    if (page == PAGE_NONE) {
+        return PAGE_NONE;
+    }
+
+    tape_read(tree->main, entry.location, record, sizeof(record_t));
+    return page;
+}
+
 void btree_close(btree_t* tree)
 {
     printfv(VERBOSITY_DEBUG, "[btree] Closing index %s.\n", tree->file->filename);
diff --git a/index.h b/index.h
index 12665d9..e6cb95c 100644
--- a/index.h
+++ b/index.h
@@ -78,6 +78,8 @@ 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);
 
+page_t btree_read_record(btree_t *tree, record_key_t key, record_t *record);
+
 btree_entry_t *btree_get_entry(btree_node_t* node, unsigned n);
 
 void btree_close(btree_t* tree);
diff --git a/readidx.c b/readidx.c
index dfaec00..e6f8441 100644
--- a/readidx.c
+++ b/readidx.c
@@ -6,11 +6,13 @@
 #include "common.h"
 #include "index.h"
 
-typedef struct {
-    char* index;
-} opts_t;
+#define OPTION_KEYS_ONLY 1
+
+struct {
+    char*   index;
+    uint8_t flags;
+} options;
 
-opts_t options;
 btree_t tree;
 
 void init_args(int args, char* argv[])
@@ -20,6 +22,9 @@ void init_args(int args, char* argv[])
 
     for (char opt; opt != -1; opt = optparse(&opts, "qv")) {
         switch (opt) {
+            case 'k':
+                options.flags |= OPTION_KEYS_ONLY;
+                break;
             case 'q':
                 verbosity--;
                 break;
@@ -54,10 +59,17 @@ void print_page(page_t page)
     memcpy(&node.entries, buffer + sizeof(node.header), NODE_SIZE_MAX);
 
     btree_entry_t *entry;
+    record_t      record;
     for (int i = 0; i < node.header.entries; i++) {
         entry = btree_get_entry(&node, i);
         print_page(entry->left);
-        printf("%u\n", entry->key);
+
+        if (~options.flags & OPTION_KEYS_ONLY) {
+            btree_read_record(&tree, entry->key, &record);
+            printf("%u: (%lf, %lf)\n", entry->key, record.x, record.y);
+        } else {
+            printf("%u\n", entry->key);
+        }
     }
     print_page(entry->right);
 }
@@ -72,7 +84,7 @@ int main(int argc, char* argv[])
     init_args(argc, argv);
     
     if (btree_open(&tree, options.index) != 0) {
-        fprintf(stderr, "Cannot open indes %s for reading.", options.index);
+        fprintf(stderr, "Cannot open index %s for reading.", options.index);
         return 1;
     }