From 49f7c2be366f0b918b68a4cc8e4335ebab0a15ba Mon Sep 17 00:00:00 2001
From: Tyler Murphy <tylerm@tylerm.dev>
Date: Sun, 30 Apr 2023 02:12:02 -0400
Subject: fix ls and add start of ed

---
 src/commands/cat.c | 51 +++++++++++++++++++++++----------------------------
 1 file changed, 23 insertions(+), 28 deletions(-)

(limited to 'src/commands/cat.c')

diff --git a/src/commands/cat.c b/src/commands/cat.c
index 8e22706..dd1a732 100644
--- a/src/commands/cat.c
+++ b/src/commands/cat.c
@@ -2,6 +2,7 @@
 
 #include <ctype.h>
 #include <errno.h>
+#include <stdio.h>
 #include <string.h>
 #include <sys/stat.h>
 
@@ -90,18 +91,26 @@ COMMAND(cat) {
     flags.change_tabs = false;
     flags.end_lines_dollar = false;
 
+    int start = 0;
+
     for (int i = 0; i < argc; i++) {
         if (!prefix("-", argv[i])) {
             continue;
         }
 
+        if (streql("-", argv[i])) {
+            break;
+        }
+
         if (streql("--help", argv[i])) {
             help();
         }
 
-        size_t len = strlen(argv[i] + 1);
-        for (size_t j = 0; j < len; j++) {
-            char c = argv[i][j + 1];
+        start++;
+
+        size_t len = strlen(argv[i]);
+        for (size_t j = 1; j < len; j++) {
+            char c = argv[i][j];
             switch (c) {
                 case 'n':
                     flags.number_lines = true;
@@ -131,33 +140,19 @@ COMMAND(cat) {
         } 
     }
 
-    bool files = false;
-    for (int i = 0; i < argc; i++) {
-        if (streql("-", argv[i])) {
-            files = true;
-            cat_file(stdin, flags);
-        } else if (prefix("-", argv[i])) {
-            continue;
-        } else {
-            files = true;
-            struct stat s;
-            if (stat(argv[i], &s) < 0) {
-                printf("error: failed to read %s: %s\n", argv[i], strerror(errno));
-                continue;
-            }
-            if (!S_ISREG(s.st_mode)) {
-                printf("error: %s is not a file\n", argv[i]);
-                continue;
-            }
-            FILE* in = get_file(argv[i], "r");
-            cat_file(in, flags);
-            fclose(in);
-        }
-    }
+    int arg_len = argc - start;
 
-    if (!files) {
+    if (arg_len < 1) {
         cat_file(stdin, flags);
+        return EXIT_SUCCESS;
     }
-    
+
+    for (int i = start; i < argc; i++) {
+        FILE* in = get_file(argv[i], "r");
+        cat_file(in, flags);
+        if (in != stdin)
+            fclose(in);
+    }
+
     return EXIT_SUCCESS;
 }
-- 
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