From d82ac2c4bb24815e313ee0c01700a85617933f66 Mon Sep 17 00:00:00 2001
From: Jaewon Choi <jaewon.james.choi@gmail.com>
Date: Sun, 1 Oct 2017 21:21:11 +0900
Subject: [PATCH] Implements cd and pwd
---
src/commands.c | 30 ++++++++++++++++++++++++++----
1 file changed, 26 insertions(+), 4 deletions(-)
diff --git a/src/commands.c b/src/commands.c
index 20293c8..3748285 100644
--- a/src/commands.c
+++ b/src/commands.c
@@ -1,12 +1,20 @@
+#include <stdio.h>
#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <linux/limits.h>
+
#include "commands.h"
int do_cd(int argc, char** argv) {
if (!validate_cd_argv(argc, argv))
return -1;
- // TODO: Fill it!
+ if (chdir(argv[1]) == -1)
+ return -1;
+
return 0;
}
@@ -14,17 +22,31 @@ int do_pwd(int argc, char** argv) {
if (!validate_pwd_argv(argc, argv))
return -1;
- // TODO: Fill it!
+ char curdir[PATH_MAX];
+
+ if (getcwd(curdir, PATH_MAX) == NULL)
+ return -1;
+
+ printf("%s\n", curdir);
return 0;
}
int validate_cd_argv(int argc, char** argv) {
- // TODO: Fill it!
+ if (argc != 2) return 0;
+ if (strcmp(argv[0], "cd") != 0) return 0;
+
+ struct stat buf;
+ stat(argv[1], &buf);
+
+ if (!S_ISDIR(buf.st_mode)) return 0;
+
return 1;
}
int validate_pwd_argv(int argc, char** argv) {
- // TODO: Fill it!
+ if (argc != 1) return 0;
+ if (strcmp(argv[0], "pwd") != 0) return 0;
+
return 1;
}
--
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