From e5fbef8e416fe89d1fe2f7840383c26528b6b8d4 Mon Sep 17 00:00:00 2001
From: Ben Winston
Date: Mon, 10 Nov 2025 22:29:09 -0500
Subject: initial commit, writes args and pwd into a file

---
 .gitignore |  3 +++
 Makefile   |  4 ++++
 later.c    | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 68 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Makefile
 create mode 100644 later.c

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4215965
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+later
+scratch/
+*.swp
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..d201105
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,4 @@
+.PHONY: build
+
+build:
+	cc later.c -Wall -Werror -o later
diff --git a/later.c b/later.c
new file mode 100644
index 0000000..5f59577
--- /dev/null
+++ b/later.c
@@ -0,0 +1,61 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+int main(int argc, char** argv) {
+    /* how it could work
+     *  - read in tokens
+     *  - wait for --
+     *  - after --, read everything in and save to the LATERFILE
+     *  - make sure to also save the PWD
+     *
+     * Format is:
+     * FROM <pwd>
+     * <command>
+     * --
+     *
+     */
+    char* laterfile_path = getenv("LATERFILE");
+    if (!laterfile_path || strlen(laterfile_path) == 0) {
+        printf("where's your LATERFILE?\n");
+        return 1;
+    }
+
+    FILE* laterfile = fopen(laterfile_path, "a");
+
+    // loop through the arguments
+    int argi = 1;
+    while (argi < argc && strncmp(argv[argi], "--", 2) != 0)
+        argi++;
+
+    if (argi == argc) {
+        printf("unrecognized arguments\n");
+        return 1;
+    }
+
+    argi++;  // go past the --
+
+    // determine the current working directory
+    char pwd[255];
+    getcwd(pwd, 254);
+
+    // TODO check err
+
+    // write the output
+    fwrite("FROM ", 1, 5, laterfile);
+    fwrite(pwd, 1, strlen(pwd), laterfile);
+    fwrite("\n", 1, 1, laterfile);
+
+    // write out the command
+    for (int i = argi; i < argc; i++) {
+        fwrite(argv[i], 1, strlen(argv[i]), laterfile);
+        fwrite(" ", 1, 1, laterfile);
+    }
+
+    // write the terminal
+    fwrite("\n--\n", 1, 4, laterfile);
+
+    return 0;
+}
-- 
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