enum entry for unarchive to be used by tar

[oweals/busybox.git] / cp.c

diff --git a/cp.c b/cp.c
index 1e10f286839035b0ced254c0df02895d47b7b802..82d43adff625824fcc98ef535333797be8a840a9 100644 (file)
--- a/cp.c
+++ b/cp.c
@@ -1,9 +1,9 @@
+/* vi: set sw=4 ts=4: */
 /*
  * Mini cp implementation for busybox
  *
  *
- * Copyright (C) 1999 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
+ * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -21,109 +21,94 @@
  *
  */
 
-#include "internal.h"
-#include <stdio.h>
-#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
 #include <utime.h>
+#include <errno.h>
 #include <dirent.h>
+#include <stdlib.h>
 
-static const char cp_usage[] = "cp [OPTION]... SOURCE DEST\n"
-    "   or: cp [OPTION]... SOURCE... DIRECTORY\n\n"
-    "Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.\n"
-    "\n"
-    "\t-a\tsame as -dpR\n"
-    "\t-d\tpreserve links\n"
-    "\t-p\tpreserve file attributes if possable\n"
-    "\t-R\tcopy directories recursively\n";
-
-
-static int recursiveFlag = FALSE;
-static int followLinks = FALSE;
-static int preserveFlag = FALSE;
-static const char *srcName;
-static const char *destName;
-static int destDirFlag = FALSE;
-static int destExistsFlag = FALSE;
-static int srcDirFlag = FALSE;
-
-static int fileAction(const char *fileName, struct stat* statbuf)
-{
-    char newdestName[NAME_MAX];
-
-    strcpy(newdestName, destName);
-    if ( srcDirFlag == TRUE ) {
-       if (recursiveFlag!=TRUE ) {
-           fprintf(stderr, "cp: %s: omitting directory\n", srcName);
-           return( TRUE);
-       }
-       strcat(newdestName, strstr(fileName, srcName) + strlen(srcName));
-    } 
-    
-    if (destDirFlag==TRUE && srcDirFlag == FALSE) {
-       if (newdestName[strlen(newdestName)-1] != '/' ) {
-           strcat(newdestName, "/");
-       }
-       strcat(newdestName, srcName);
-    }
-    
-    return (copyFile(fileName, newdestName, preserveFlag, followLinks));
-}
+#include "busybox.h"
 
 extern int cp_main(int argc, char **argv)
 {
-    struct stat statBuf;
-
-    if (argc < 3) {
-       usage (cp_usage);
-    }
-    argc--;
-    argv++;
+       int status = 0;
+       int opt;
+       int flags = 0;
+       int i;
 
-    /* Parse any options */
-    while (**argv == '-') {
-       while (*++(*argv))
-           switch (**argv) {
-           case 'a':
-               followLinks = TRUE;
-               preserveFlag = TRUE;
-               recursiveFlag = TRUE;
-               break;
-           case 'd':
-               followLinks = TRUE;
-               break;
-           case 'p':
-               preserveFlag = TRUE;
-               break;
-           case 'R':
-               recursiveFlag = TRUE;
-               break;
-           default:
-               usage (cp_usage);
-           }
-       argc--;
-       argv++;
-    }
+       while ((opt = getopt(argc, argv, "adfipR")) != -1)
+               switch (opt) {
+               case 'a':
+                       flags |= FILEUTILS_PRESERVE_STATUS | FILEUTILS_RECUR;
+                       /* fallthrough */
+               case 'd':
+                       flags |= FILEUTILS_PRESERVE_SYMLINKS;
+                       break;
+               case 'f':
+                       flags |= FILEUTILS_FORCE;
+                       break;
+               case 'i':
+                       flags |= FILEUTILS_INTERACTIVE;
+                       break;
+               case 'p':
+                       flags |= FILEUTILS_PRESERVE_STATUS;
+                       break;
+               case 'R':
+                       flags |= FILEUTILS_RECUR;
+                       break;
+               default:
+                       show_usage();
+               }
+       
+       if (optind + 2 > argc)
+               show_usage();
 
+       /* If there are only two arguments and...  */
+       if (optind + 2 == argc) {
+               struct stat source_stat;
+               struct stat dest_stat;
+               int source_exists = 1;
+               int dest_exists = 1;
 
-    destName = argv[argc - 1];
-    if (stat(destName, &statBuf) >= 0) {
-       destExistsFlag = TRUE;
-       if (S_ISDIR(statBuf.st_mode))
-           destDirFlag = TRUE;
-    }
+               if (((flags & FILEUTILS_PRESERVE_SYMLINKS) &&
+                               lstat(argv[optind], &source_stat) < 0) ||
+                               (!(flags & FILEUTILS_PRESERVE_SYMLINKS) &&
+                                stat(argv[optind], &source_stat))) {
+                       if (errno != ENOENT)
+                               perror_msg_and_die("unable to stat `%s'", argv[optind]);
+                       source_exists = 0;
+               }
 
-    if ((argc > 3) && destDirFlag==FALSE) {
-       fprintf(stderr, "%s: not a directory\n", destName);
-       exit (FALSE);
-    }
+               if (stat(argv[optind + 1], &dest_stat) < 0) {
+                       if (errno != ENOENT)
+                               perror_msg_and_die("unable to stat `%s'", argv[optind + 1]);
+                       dest_exists = 0;
+               }
+               
+               /* ...if neither is a directory or...  */
+               if (((!source_exists || !S_ISDIR(source_stat.st_mode)) &&
+                               (!dest_exists || !S_ISDIR(dest_stat.st_mode))) ||
+                               /* ...recursing, the first is a directory, and the
+                                * second doesn't exist, then... */
+                               ((flags & FILEUTILS_RECUR) && S_ISDIR(source_stat.st_mode) &&
+                                !dest_exists)) {
+                       /* ...do a simple copy.  */
+                       if (copy_file(argv[optind], argv[optind + 1], flags) < 0)
+                               status = 1;
+                       return status;
+               }
+       }
 
-    while (argc-- > 1) {
-       srcName = *(argv++);
-       srcDirFlag = isDirectory(srcName);
-       if (recursiveAction(srcName, recursiveFlag, followLinks, FALSE,
-                              fileAction, fileAction) == FALSE) {
-           exit( FALSE);
+       for (i = optind; i < argc - 1; i++) {
+               char *dest = concat_path_file(argv[argc - 1],
+                               get_last_path_component(argv[i]));
+               if (copy_file(argv[i], dest, flags) < 0)
+                       status = 1;
+               free(dest);
        }
-    }
-    exit( TRUE);
+
+       return status;
 }