From f9eaf742d894b0e6d2c5b1bc244ba17bd00a9e85 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juan=20Manuel=20Tom=C3=A1s?= <jtomas1815@gmail.com>
Date: Wed, 22 Apr 2020 10:48:30 -0300
Subject: Move operations on point structures to point.c

---
 page.c | 93 ------------------------------------------------------------------
 1 file changed, 93 deletions(-)

(limited to 'page.c')

diff --git a/page.c b/page.c
index d450522..b945ef8 100644
--- a/page.c
+++ b/page.c
@@ -1,5 +1,4 @@
 #include <stdint.h>
-#include <stdbool.h>
 #include <string.h>
 #include <stdlib.h>
 
@@ -14,45 +13,6 @@ struct page {
 	struct page *prev;
 };
 
-struct point {
-	struct page *current_page;
-	uint16_t index;
-};
-
-uint16_t index_to_offset(struct page *page, uint16_t index) {
-	if (index < page->gap_start) {
-		return index;
-	} else {
-		return index + (page->gap_end - page->gap_start);
-	}
-}
-
-bool at_eof(struct point *point) {
-	return point->index == point->current_page->element_count;
-}
-
-void move_point_forward(struct point *point) {
-	struct page *page = point->current_page;
-	if (point->index < page->element_count) {
-		point->index++;
-	}
-	if (point->index == page->element_count && page->next) {
-		point->index = 0;
-		point->current_page = page->next;
-	}
-}
-
-void move_point_backward(struct point *point) {
-	struct page *page = point->current_page;
-	if (point->index == 0 && page->prev) {
-		point->index = page->prev->element_count;
-		point->current_page = page->prev;
-	}
-	if (point->index > 0) {
-		point->index--;
-	}
-}
-
 struct page *new_page() {
 	struct page *result = malloc(sizeof(struct page));
 	result->buffer = malloc(PAGE_SIZE);
@@ -105,56 +65,3 @@ void move_gap_backward(struct page *page) {
 	page->gap_start--;
 	page->buffer[page->gap_end] = page->buffer[page->gap_start];
 }
-
-void move_gap(struct page *page, uint16_t index) {
-	while (page->gap_end < index_to_offset(page, index)) {
-		move_gap_forward(page);
-	}
-	while (page->gap_end > index_to_offset(page, index)) {
-		move_gap_backward(page);
-	}
-}
-
-void insert_at_point(struct point *point, uint8_t c) {
-	struct page *page = point->current_page;
-	if (page->gap_start == page->gap_end) {
-		split_page(page);
-		if (point->index >= PAGE_SIZE / 2) {
-			page = page->next;
-			point->current_page = page;
-			point->index -= PAGE_SIZE / 2;
-		}
-	}
-	move_gap(page, point->index);
-	page->buffer[page->gap_start] = c;
-	page->gap_start++;
-	page->element_count++;
-	move_point_forward(point);
-}
-
-void delete_at_point(struct point *point) {
-	struct page *page = point->current_page;
-	if (page->element_count == 0) {
-		if (page->prev) {
-			page = page->prev;
-			free_page(point->current_page);
-			point->current_page = page;
-			point->index = page->element_count;
-		} else if (page->next) {
-			page = page->next;
-			free_page(point->current_page);
-			point->current_page = page;
-			point->index = 0;
-		}
-	}
-	move_gap(page, point->index);
-	if (page->gap_start != 0) {
-		page->gap_start--;
-		page->element_count--;
-		move_point_backward(point);
-	}
-}
-
-uint8_t get_element(struct point *point) {
-	return point->current_page->buffer[index_to_offset(point->current_page, point->index)];
-}
-- 
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