From 144637684f84b169e8289835324f90644954a687 Mon Sep 17 00:00:00 2001
From: Raphael <rparodi@student.42.fr>
Date: Sat, 28 Mar 2026 15:40:19 +0100
Subject: [PATCH] feat(parsing/sources): adding parsing main

---
 parsing/sources/parsing.c | 133 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 parsing/sources/parsing.c

diff --git a/parsing/sources/parsing.c b/parsing/sources/parsing.c
new file mode 100644
index 0000000..b14daaa
--- /dev/null
+++ b/parsing/sources/parsing.c
@@ -0,0 +1,133 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   parsing.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: rparodi <rparodi@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/03/23 14:49:36 by rparodi           #+#    #+#             */
+/*   Updated: 2026/03/28 15:26:13 by rparodi          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "parsing.h"
+#include "macro.h"
+#include <bits/getopt_core.h>
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <errno.h>
+
+const t_args _flags[] = {
+	{'?', "help", NULL, "print help and exit", true},
+	{'W', "linger","<timeout>,", "time to wait for response", false},
+	{'c', "count","<count>", "stop after <count> replies", false},
+	{'f', "flood",NULL, "flood ping", false},
+	{'l', "preload","<preload>,", "send <preload> number of packages while waiting replies", false},
+	{'n', "numeric",NULL, "no reverse DNS name resolution", false},
+	{'p', "pattern","<pattern>,", "contents of padding byte", false},
+	{'q', "quiet", NULL, "reply wait <deadline> in seconds", false},
+	{'v', "verbose",NULL, "verbose output", true},
+	{'w', "timeout","<deadline>,", "reply wait <deadline> in seconds", false},
+	{0, "usage", NULL, "give a short usage message", false},
+	{0, NULL, NULL,NULL, true},
+};
+
+static struct option *_t_args_to_getopt_long(const size_t size) {
+	struct option *long_options = (struct option *)calloc((size + 1), sizeof(struct option));
+	if (!long_options) {
+		return NULL;
+	}
+
+	for (size_t i = 0; i < size; i++) {
+		long_options[i].name = _flags[i].long_option;
+		long_options[i].val = _flags[i].short_option;
+		if (_flags[i].usage == NULL) {
+			long_options[i].has_arg = no_argument;
+		} else {
+			long_options[i].has_arg = required_argument;
+		}
+		long_options[i].flag = NULL;
+	}
+
+	long_options[size] = (struct option){0};
+	return long_options;
+}
+
+void	parsing_args(int argc, char **argv, t_flags *flags)
+{
+	const size_t size = args_size();
+	size_t j = 0;
+	char args[2 * size + 1];
+	bzero(args, sizeof(args));
+
+	for (size_t i = 0; i < size; i++) {
+		if (_flags[i].is_mandatory != false || BONUS == 1) {
+			args[j++] = _flags[i].short_option;
+			if (_flags[i].usage != NULL)
+				args[j++] = ':';
+		}
+	}
+
+	DEBUG_LOG(args);
+
+	struct option *options = _t_args_to_getopt_long(size);
+	if (!options) {
+		ERROR_LOG(strerror(ENOMEM));
+		exit(ENOMEM);
+	}
+	opterr = 1;
+	int opt;
+	while ((opt = getopt_long(argc, argv, args, options, NULL)) != -1) {
+		switch (opt) {
+			case 'v':
+				INFO_LOG("argument verbose");
+				flags->verbose = true;
+				break;
+			case 'f':
+				INFO_LOG("argument flood");
+				flags->flood = true;
+				break;
+			case 'n':
+				INFO_LOG("argument no-reverse");
+				flags->reverse_dns = true;
+				break;
+			case 'c':
+				INFO_LOG("argument count");
+				flags->count = check_num_arguments(optarg);
+				break;
+			case 'q':
+				INFO_LOG("argument quiet");
+				flags->quiet = true;
+				break;
+			case 'w':
+				INFO_LOG("argument wait");
+				flags->wait = check_num_arguments(optarg);
+				break;
+			case 'W':
+				INFO_LOG("argument timeout");
+				flags->timeout = check_num_arguments(optarg);
+				break;
+			case '?':
+				free(options);
+				if (optopt != 0) {
+					if (isprint(optopt)) {
+						char invalid_option[2] = {optopt, 0};
+						WARN_LOG(invalid_option);
+					}
+					dprintf(2, "Try 'ping --help' or 'ping --usage' for more information.\n");
+					exit(64);
+				}
+				print_help(size);
+				exit(EXIT_SUCCESS);
+			default:
+				if (strcmp(options[optind - 1].name, "usage"))
+					print_usage(size);
+		}
+	}
+	free(options);
+}