Breakup monolithic code

1 files changed, 41 insertions, 0 deletions

diff --git a/src/lib/file.c b/src/lib/file.c
new file mode 100644
index 0000000..3464866
--- /dev/null
+++ b/src/lib/file.c
@@ -0,0 +1,41 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "file.h"
+#include "lib.h"
+
+struct filedata readfile(FILE *fp) {
+  struct filedata f;
+
+  f.lc = 0;
+  f.len = 0;
+
+  unsigned bufsize = 4;
+
+  f.buf = malloc(bufsize);
+  if (f.buf == NULL)
+    die("malloc");
+
+  char c;
+  while (fread(&c, sizeof(char), 1, fp) > 0) {
+    if (f.len == bufsize - 1) {
+      bufsize *= 2;
+
+      char *new_buf = realloc(f.buf, bufsize);
+      if (f.buf == NULL) {
+        free(f.buf);
+        die("realloc");
+      }
+
+      f.buf = new_buf;
+    }
+
+    if (c == '\n') {
+      f.lc++;
+    }
+
+    f.buf[f.len++] = c;
+  }
+
+  return f;
+}