From d98f46ce647846b0aa30b2e16a30fd4e152a1bf5 Mon Sep 17 00:00:00 2001
From: Carlos Maiolino <cem@kernel.org>
Date: Thu, 10 Jul 2025 22:55:07 +0200
Subject: Add new code

Signed-off-by: Carlos Maiolino <cem@toxiclabs.cc>
---
 C/final-project-z2h/src/main.c | 108 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 C/final-project-z2h/src/main.c

(limited to 'C/final-project-z2h/src/main.c')

diff --git a/C/final-project-z2h/src/main.c b/C/final-project-z2h/src/main.c
new file mode 100644
index 0000000..09cbde1
--- /dev/null
+++ b/C/final-project-z2h/src/main.c
@@ -0,0 +1,108 @@
+#include <stdio.h>
+#include <stdbool.h>
+#include <getopt.h>
+#include <stdlib.h>
+
+#include "common.h"
+#include "file.h"
+#include "parse.h"
+
+void print_usage(char *argv[]) {
+	printf("Usage: %s -n -f <database file>\n", argv[0]);
+	printf("\t -n  - create new database file\n");
+	printf("\t -f  - (required) path to database file\n");
+	return;
+}
+
+int main(int argc, char *argv[]) { 
+	char *filepath = NULL;
+	char *portarg = NULL;
+	unsigned short port = 0;
+	bool newfile = false;
+	bool list = false;
+  char *addstring = NULL;
+	int c;
+
+	int dbfd = -1;
+	struct dbheader_t *dbhdr = NULL;
+	struct employee_t *employees = NULL;
+
+	while ((c = getopt(argc, argv, "nf:a:l")) != -1) {
+		switch (c) {
+			case 'n':
+				newfile = true;
+				break;
+			case 'f':
+				filepath = optarg;
+				break;
+			case 'p':
+				portarg = optarg;
+				break;
+			case 'a':
+				addstring = optarg;
+				break;
+			case 'l':
+				list = true;
+				break;
+			case '?':
+				printf("Unknown option -%c\n", c);
+				break;
+			default:
+				return -1;
+
+		}
+	}
+
+	if (filepath == NULL) {
+		printf("Filepath is a required argument\n");
+		print_usage(argv);
+
+		return 0;
+	}
+
+
+	if (newfile) {
+		dbfd = create_db_file(filepath);
+		if (dbfd == STATUS_ERROR) {
+			printf("Unable to create database file\n");
+			return -1;
+		}
+
+		if (create_db_header(dbfd, &dbhdr) == STATUS_ERROR) {
+			printf("Failed to create database header\n"); 
+			return -1;
+		}
+	} else {
+		dbfd = open_db_file(filepath);
+		if (dbfd == STATUS_ERROR) {
+			printf("Unable to open database file\n");
+			return -1;
+		}
+
+		if (validate_db_header(dbfd, &dbhdr) == STATUS_ERROR) {
+			printf("Failed to validate database header\n");
+			return -1;
+		}
+	}
+
+	if (read_employees(dbfd, dbhdr, &employees) != STATUS_SUCCESS) {
+		printf("Failed to read employees");
+		return 0;
+	}
+
+	if (addstring) {
+		dbhdr->count++;
+		employees = realloc(employees, dbhdr->count*(sizeof(struct employee_t)));
+		add_employee(dbhdr, employees, addstring);
+	}
+
+	if (list) {
+		list_employees(dbhdr, employees);
+	}
+
+
+	output_file(dbfd, dbhdr, employees);
+
+
+	return 0;
+}
-- 
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