From 14c7e194422e7a459189ed6d631a15835a2cbbb8 Mon Sep 17 00:00:00 2001
From: Tyler Murphy <tylerm@tylerm.dev>
Date: Mon, 1 May 2023 18:53:44 -0400
Subject: [PATCH] use n flag in xargs

---
 src/commands/xargs.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/commands/xargs.c b/src/commands/xargs.c
index 3b96bb6..01fb6ce 100644
--- a/src/commands/xargs.c
+++ b/src/commands/xargs.c
@@ -47,6 +47,7 @@ static int short_arg(char c, char* next) {
             if (n < 1) {
                 error("error: max arg count must be at least 1");
             }
+            flags.max_args = n;
             return ARG_USED;
     }
     return ARG_UNUSED;
@@ -54,7 +55,7 @@ static int short_arg(char c, char* next) {
 
 char* read_next(FILE* file, int arg_count) {
 
-    if (arg_count == flags.max_args) return NULL;
+    if (flags.max_args != -1 && arg_count == flags.max_args) return NULL;
 
     int size = 0;
     int capacity = 8;
@@ -83,12 +84,14 @@ char* read_next(FILE* file, int arg_count) {
 
 void read_args(FILE* file, char*** args, int* size, int* capacity) {
     char* arg;
-    while (arg = read_next(file, *size), true) {
+    static int read = 0;
+    while (arg = read_next(file, read), true) {
         if (*size == *capacity) {
             *capacity *= 2;
             *args = realloc(*args, sizeof(char*) * *capacity);
         }
         (*args)[(*size)++] = arg;
+        read++;
         if (arg == NULL) break;
     }
 }