From 8dbd655c437937f0db2d046257ee4810f5a860a7 Mon Sep 17 00:00:00 2001
From: Garritt McCune <glmccune@gmail.com>
Date: Mon, 7 Feb 2022 19:25:08 +0000
Subject: [PATCH] Implemented the file reading routine and added the skeleton
 for the interpreter.

---
 .gitignore |  1 +
 lox.c      | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)
 create mode 100644 lox.c

diff --git a/.gitignore b/.gitignore
index e69de29..e48d01a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1 @@
+clox
diff --git a/lox.c b/lox.c
new file mode 100644
index 0000000..2c21d5b
--- /dev/null
+++ b/lox.c
@@ -0,0 +1,53 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sysexits.h>
+#include <string.h>
+#include <errno.h>
+
+void RunFile(const char*);
+void RunPrompt(void);
+char* GetFileContents(const char*);
+
+int main(int argc, char** argv) {
+    if (argc > 2) {
+        printf("Useage: clox [script]\n");
+        exit(EX_USAGE);
+    } else if (argc == 2) {
+        RunFile(argv[1]);
+    } else {
+        RunPrompt();
+    }
+}
+
+void RunFile(const char* path) {
+    printf("Running '%s'\n", path);
+    char* contents = GetFileContents(path);
+    printf("%s", contents);
+}
+
+char* GetFileContents(const char* path) {
+    FILE *script = fopen(path, "r");
+
+    if (!script) {
+        fprintf(stderr, "Failed to open script '%s'. %s.\n", path, strerror(errno));
+        return NULL;
+    }
+
+    size_t length;
+    char* content = NULL;
+
+    size_t bytes_read = getdelim(&content, &length, '\0', script);
+
+    fclose(script);
+
+    if (bytes_read < 0) {
+        fprintf(stderr, "Failed to read '%s'. %s.\n", path, strerror(errno));
+        return NULL;
+    }
+
+    return content;
+}
+
+void RunPrompt(void) {
+    printf("> \n");
+}
\ No newline at end of file