From 8810409199accdba6523d17279437503fba310d6 Mon Sep 17 00:00:00 2001
From: Ekaitz Zarraga <ekaitz@elenq.tech>
Date: Wed, 13 Aug 2025 00:24:57 +0200
Subject: piece-table: Add piece_table_optimize

---
 src/piece-table-internals.h |  1 +
 src/piece-table.c           | 34 ++++++++++++++++++++++++++++++----
 src/piece-table.h           |  2 ++
 3 files changed, 33 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/piece-table-internals.h b/src/piece-table-internals.h
index 47a0f4a..af0e8b1 100644
--- a/src/piece-table-internals.h
+++ b/src/piece-table-internals.h
@@ -86,3 +86,4 @@ void piece_table_destroy (piece_table *pt);
 char piece_table_index (piece_table *pt, size_t pos);
 void piece_table_to_string (piece_table *pt, char *buf, size_t size);
 size_t piece_table_length (piece_table *pt);
+void piece_table_optimize (piece_table *pt);
diff --git a/src/piece-table.c b/src/piece-table.c
index 43728e4..36556ae 100644
--- a/src/piece-table.c
+++ b/src/piece-table.c
@@ -405,10 +405,8 @@ piece_table_to_string (piece_table *pt, char *buf, size_t size)
   if (pt->length < size)
     size = pt->length;
   for (i = 0; i < size; i++)
-    {
-      buf[i] = piece_table_index (pt, i);
-    }
-  buf[i] = '\0';
+    buf[i] = piece_table_index (pt, i);
+  buf[i] = '\0'; /* TODO: KILL ME */
 }
 
 size_t
@@ -416,3 +414,31 @@ piece_table_length (piece_table *pt)
 {
   return pt->length;
 }
+
+void
+piece_table_optimize (piece_table *pt)
+{
+  piece *p;
+  char *buff = malloc (sizeof (*buff) * pt->length + 1); /*TODO remove +1*/
+  piece_table_to_string (pt, buff, pt->length);
+
+  text_buffer_fill (&pt->orig, buff, pt->length);
+  text_buffer_init (&pt->add);
+
+  for (p = pt->sentinel->next; p != pt->sentinel; p = p->next)
+    piece_table_piece_mark_empty (pt, p);
+  piece_buffer_empty (pt->pieces);
+
+  pt->sentinel = piece_buffer_bump (pt->pieces);
+  p = piece_buffer_bump (pt->pieces);
+  pt->empty = NULL;
+
+  p->next = pt->sentinel;
+  p->prev = pt->sentinel;
+  pt->sentinel->prev = p;
+  pt->sentinel->next = p;
+
+  p->start = 0;
+  p->length = pt->length;
+  p->buffer = &pt->orig;
+}
diff --git a/src/piece-table.h b/src/piece-table.h
index a8f0769..70cb91c 100644
--- a/src/piece-table.h
+++ b/src/piece-table.h
@@ -33,4 +33,6 @@ void piece_table_delete (piece_table *pt, size_t pos, size_t len);
 void piece_table_to_string (piece_table *pt, char *buf, size_t size);
 size_t piece_table_length (piece_table *pt);
 
+void piece_table_optimize (piece_table *pt);
+
 #endif
-- 
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