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Diffstat (limited to 'page.c')
-rw-r--r--page.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/page.c b/page.c
index 128a88a..f955c3a 100644
--- a/page.c
+++ b/page.c
@@ -4,7 +4,7 @@
#define PAGE_SIZE 1024
struct page {
- uint8_t contents[PAGE_SIZE];
+ uint8_t buffer[PAGE_SIZE];
uint8_t *gap_start;
uint8_t *gap_end;
struct page *next;
@@ -13,22 +13,22 @@ struct page {
struct page *new_page() {
struct page *result = malloc(sizeof(struct page));
- result->gap_start = result->contents;
- result->gap_end = result->contents + PAGE_SIZE - 1;
+ result->gap_start = result->buffer;
+ result->gap_end = result->buffer + PAGE_SIZE - 1;
result->next = 0;
result->prev = 0;
return result;
}
static inline void set_half_page_gap(struct page *page) {
- page->gap_start = page->contents + PAGE_SIZE / 2;
- page->gap_end = page->contents + PAGE_SIZE - 1;
+ page->gap_start = page->buffer + PAGE_SIZE / 2;
+ page->gap_end = page->buffer + PAGE_SIZE - 1;
}
void split_page(struct page *first_half) {
struct page *second_half = new_page();
- memcpy(second_half->contents, first_half->contents + PAGE_SIZE / 2, PAGE_SIZE / 2 - 1);
+ memcpy(second_half->buffer, first_half->buffer + PAGE_SIZE / 2, PAGE_SIZE / 2 - 1);
set_half_page_gap(first_half);
set_half_page_gap(second_half);
@@ -72,8 +72,8 @@ static inline int page_is_full(struct page *page) {
}
static inline int page_is_empty(struct page *page) {
- return page->gap_start == page->contents
- && page->gap_end == page->contents + PAGE_SIZE - 1;
+ return page->gap_start == page->buffer
+ && page->gap_end == page->buffer + PAGE_SIZE - 1;
}
void insert_into_page(struct page *page, uint8_t c) {
@@ -84,7 +84,7 @@ void insert_into_page(struct page *page, uint8_t c) {
}
void erase_from_page(struct page *page) {
- if (page->gap_start != page->contents) {
+ if (page->gap_start != page->buffer) {
page->gap_start--;
}
}