first iteration

build.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+set -xe
+
+clang -Wall -Wextra -o zed main.c

input.txt

@@ -0,0 +1 @@
+Hello, Zed!

main.c

@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#define ZED_CAPACITY 1024
+
+typedef struct {
+    char data[ZED_CAPACITY];
+    size_t count;
+} Editor;
+
+static Editor editor = {0};
+
+int main(int argc, char **argv)
+{
+    if (argc < 2) {
+        fprintf(stderr, "Usage: zed <input.txt>\n");
+        fprintf(stderr, "ERROR: no input file was provided\n");
+        return 1;
+    }
+
+    const char *file_path = argv[1];
+    FILE *f = fopen(file_path, "rb");
+    if (f == NULL) {
+        fprintf(
+            stderr, 
+            "ERROR: could not open file %s: %s\n", 
+            file_path, 
+            strerror(errno)
+        );
+        return 1;
+    }
+
+    editor.count = fread(editor.data, 1, ZED_CAPACITY, f);
+    fwrite(editor.data, 1, editor.count, stdout);
+
+    printf("Input file: %s\n", file_path);
+
+    fclose(f);
+
+    return 0;
+}