From 98c53586d17802ff5362a5ab99161bbb7c9e3183 Mon Sep 17 00:00:00 2001
From: Aaron Fischer <aaron.fischer@marbis.net>
Date: Fri, 21 Sep 2018 09:10:15 +0200
Subject: [PATCH] Add the whole file to the buffer

---
 kilo.c | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/kilo.c b/kilo.c
index 35da4b9..60bfd7a 100644
--- a/kilo.c
+++ b/kilo.c
@@ -45,7 +45,7 @@ struct editorConfig {
   int screenrows;
   int screencols;
   int numrows;
-  erow row;
+  erow *row;
   struct termios orig_termios;
 };
 
@@ -168,6 +168,19 @@ int getWindowSize(int *rows, int *cols) {
   }
 }
 
+/*** row operations ***/
+
+void editorAppendRow(char *s, size_t len) {
+  E.row = realloc(E.row, sizeof(erow) * (E.numrows +1));
+
+  int at = E.numrows;
+  E.row[at].size = len;
+  E.row[at].chars = malloc(len + 1);
+  memcpy(E.row[at].chars, s, len);
+  E.row[at].chars[len] = '\0';
+  E.numrows++;
+}
+
 /*** file i/o ***/
 
 void editorOpen(char *filename) {
@@ -177,16 +190,11 @@ void editorOpen(char *filename) {
   char *line = NULL;
   size_t linecap = 0;
   ssize_t linelen;
-  linelen = getline(&line, &linecap, fp);
-  if (linelen != -1) {
+  while ((linelen = getline(&line, &linecap, fp)) != -1) {
     while (linelen > 0 && (line[linelen - 1] == '\n' ||
                            line[linelen - 1] == '\r'))
       linelen--;
-    E.row.size = linelen;
-    E.row.chars = malloc(linelen + 1);
-    memcpy(E.row.chars, line, linelen);
-    E.row.chars[linelen] = '\0';
-    E.numrows = 1;
+    editorAppendRow(line, linelen);
   }
   free(line);
   fclose(fp);
@@ -234,9 +242,9 @@ void editorDrawRows(struct abuf *ab) {
         abAppend(ab, "~", 1);
       }
     } else {
-      int len = E.row.size;
+      int len = E.row[y].size;
       if (len > E.screencols) len = E.screencols;
-      abAppend(ab, E.row.chars, len);
+      abAppend(ab, E.row[y].chars, len);
     }
 
     abAppend(ab, "\x1b[K", 3); // Erase one line
@@ -335,6 +343,7 @@ void initEditor() {
   E.cx = 0;
   E.cy = 0;
   E.numrows = 0;
+  E.row = NULL;
 
   if (getWindowSize(&E.screenrows, &E.screencols) == -1)
       die("getWindowSize");