New bug: multiple files

README.md

@@ -8,15 +8,15 @@ I'm sure you are all proficient C/C++ programmers, but - just in case you had a
 Write your own version of Unix "cp" (copy) command.
 
 As a bare minimum - please write a program that:
- - accepts source and destination filenames as its arguments (you DO remember how to use argc and argv ?)
- - makes a copy of indicated file
-  - returns 0 on success, any non-zero value on error
-  - uses ONLY POSIX I/O functions (open, close, read, write - consult appropriate manuals)
+ - [x] accepts source and destination filenames as its arguments (you DO remember how to use argc and argv ?)
+ - [x] makes a copy of indicated file
+ - [x] returns 0 on success, any non-zero value on error
+ - [x] uses ONLY POSIX I/O functions (open, close, read, write - consult appropriate manuals)
 
 NOTICE: Do not assume, that you can read entire file into memory. Please read manuals carefully - pay attention to each function's return value!
 
 I'm sure this task will prove to be to easy to some of you - in this case you can extend your program - for example you can add features to allow:
- - copy source_file dest_dir  (copy source file to the indicated directory, keeping its name)
+ - [ ] copy source_file dest_dir  (copy source file to the indicated directory, keeping its name)
  - copy file1 file2 file3 dest_dir (copy files file1...file3 into destination directory)
  - ... ?
 

Topic-1/main.c

@@ -1,13 +1,18 @@
+// UNIX cp copy
+// Wrote for Computer Networks and Systems lab classes
+// AUTHOR : Sergiusz Warga
+
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <sys/stat.h>
+#include <string.h>
 
-#define BUFFER_SIZE 8
+#define BUFFER_SIZE 8 // TODO: Think about it.
 
-enum ERROR{NO_ARGUMENTS, WRONG_ARGUMENT};
+enum ERROR{NO_ARGUMENTS, WRONG_ARGUMENT, DUNNO};
 
 int print_error_message(enum ERROR error_type) {
     if (error_type == NO_ARGUMENTS) {
@@ -17,6 +22,8 @@ int print_error_message(enum ERROR error_type) {
     } else if (error_type == WRONG_ARGUMENT) {
         fprintf(stderr, "cp: unrecognized option\n");
         fprintf(stderr,"Try cp --help for more information.\n");
+    } else if (error_type == DUNNO) {
+        fprintf(stderr, "Something went wrong!\n");
     }
     return 0;
 }
@@ -26,10 +33,28 @@ int print_help() {
     return 0;
 }
 
-int cp(char *argv[]){
+int is_dir(const char *name) {
+    struct stat path;
+    stat(name, &path);
+    return S_ISDIR(path.st_mode);
+}
+
+int cp(char *old_name, char *new_name) {
+// int cp(char *old_argv, char *new_argv) {
+    // char *old_name, *new_name;
+    // strncpy(old_name, old_argv, sizeof(old_argv));
+    // strncpy(new_name, new_argv, sizeof(new_argv));
     int old, new;
-    old = open(argv[1], O_RDONLY);
-    new = open(argv[2], O_CREAT | O_WRONLY);
+    if (is_dir(new_name)) {
+        printf("%s\n", new_name);
+        strncat(new_name, "/", 1);
+        printf("%s\n", new_name);
+        strncat(new_name, old_name, sizeof(old_name));
+        printf("%s\n", new_name);
+    }
+    printf("Moving %s to %s\n", old_name, new_name);
+    old = open(old_name, O_RDONLY);
+    new = open(new_name, O_CREAT | O_WRONLY);
     char buffer[BUFFER_SIZE];
     int read_bytes;
 
@@ -37,10 +62,7 @@ int cp(char *argv[]){
         write(new, buffer, read_bytes);
     }
 
-    struct stat mod_bits;
-
-    stat(argv[1], &mod_bits);
-    chmod(argv[2], mod_bits.st_mode);
+    printf("%s moved to %s\n", old_name, new_name);
 
     close(old);
     close(new);
@@ -48,6 +70,15 @@ int cp(char *argv[]){
     return 0;
 }
 
+int copy_mod_bits(char *old_name, char *new_name) {
+    struct stat mod_bits;
+
+    stat(old_name, &mod_bits);
+    chmod(new_name, mod_bits.st_mode);
+
+    return 0;
+}
+
 int main(int argc, char *argv[]) {
     if (argc == 1) {
         print_error_message(NO_ARGUMENTS);
@@ -63,7 +94,17 @@ int main(int argc, char *argv[]) {
         }
     }
     if (argc == 3) {
-        if (cp(argv) > 0) return 1;
+        if (cp(argv[1], argv[2]) > 0) return 1;
+        copy_mod_bits(argv[1], argv[2]);
     }
+    if (argc > 3) {
+        int no_of_old_files = argc - 2;
+        for (int i = 1; i <= no_of_old_files; ++i) {
+            printf("TOOO %s\n", argv[argc-1]);
+            if (cp(argv[i], argv[argc-1]) > 0) return 1;
+            copy_mod_bits(argv[i], argv[argc-1]);
+        }
+    }
+
     return 0;
 }

Topic-1/test.sh

@@ -1,7 +1,20 @@
 #!/bin/bash
+# Clean and compile
 rm -f old_file new_file;
 echo "QWERTYUIOP" > old_file;
+echo "ASDFGHJKLZ" > old_file2;
+mkdir new_dir;
 gcc -Wall main.c -o cp;
+# Run
 ./cp old_file new_file;
-chmod +rw new_file;
-diff old_file new_file;
+./cp old_file old_file2 new_dir;
+tree;
+# Check if everything went well
+if diff old_file new_file; diff old_file new_dir/old_file; diff old_file2 new_dir/old_file2; then
+  echo "Well done!"
+else
+  echo "Something went wrong!"
+fi
+# Clean
+rm -f old_file new_file new_dir/old_file new_dir/old_file2;
+rmdir new_dir;