1 files changed, 43 insertions, 0 deletions
diff --git a/util.c b/util.c
new file mode 100644
index 0000000..54586c4
--- /dev/null
+++ b/util.c
@@ -0,0 +1,43 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "util.h"
+
+int
+read_file(char *path, char **output, size_t * read_size)
+{
+	long 	file_size;
+	FILE   *fp;
+
+	fp = fopen(path, "r");
+	if (fp == NULL)
+		return -1;
+
+	/* get file size */
+	if (fseek(fp, 0L, SEEK_END) != 0)
+		return -1;
+
+	file_size = ftell(fp);
+	if (file_size < 0)
+		return -1;
+
+	/* rewind to file start */
+	if (fseek(fp, 0L, SEEK_SET) != 0)
+		return -1;
+
+	/* create output buffer */
+	*output = malloc(sizeof(char) * (file_size + 1));
+	if (*output == NULL)
+		return -1;
+
+	/* read the file */
+	*read_size = fread(*output, sizeof(char), file_size, fp);
+	if (*read_size == 0 || ferror(fp) != 0) {
+		free(*output);
+		return -1;
+	}
+	/* enforce string termination */
+	(*output)[*read_size] = '\0';
+
+	return 0;
+}