Start to rewriting code

Since there's some UB in the master I decided to rewrite code from
scratch again. I hope that attempt will be better :D

1 files changed, 39 insertions, 0 deletions

diff --git a/src/readfile.c b/src/readfile.c
new file mode 100644
index 0000000..8a0ff2e
--- /dev/null
+++ b/src/readfile.c
@@ -0,0 +1,39 @@
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "utils.h"
+
+
+char *readfile(const char *name)
+{
+    char *code, chr;
+    FILE *file = fopen(name, "r");
+    if (errno) die(1, strerror(errno));
+        fseek(file, 0, SEEK_END);
+        size_t size = ftell(file);
+        fseek(file, 0, SEEK_SET);
+        code = calloc(size + 1, sizeof(*code));
+
+        for (int i = 0; i < size; ++i)
+        {
+            if ((chr = fgetc(file)) == EOF)
+            {
+                if (errno)
+                {
+                    fclose(file);
+                    die(1, strerror(errno));
+                }
+                else
+                {
+                    break;
+                }
+            }
+            code[i] = chr;
+        }
+        code[size - 1] = '\0';
+    fclose(file);
+
+    return code;
+}