* src/common.h (transform_symlinks_option): New global.

[chaz/tar] / src / tar.c

diff --git a/src/tar.c b/src/tar.c
index cc11ba5810eba0e3c2799a76b254d80d44507e89..1b9ffce130c2a887dafd4bdfc206289df84188d8 100644 (file)
--- a/src/tar.c
+++ b/src/tar.c
@@ -271,6 +271,7 @@ enum
   IGNORE_FAILED_READ_OPTION,
   INDEX_FILE_OPTION,
   KEEP_NEWER_FILES_OPTION,
+  LZOP_OPTION,
   MODE_OPTION,
   MTIME_OPTION,
   NEWER_MTIME_OPTION,
@@ -280,11 +281,13 @@ enum
   NO_DELAY_DIRECTORY_RESTORE_OPTION,
   NO_IGNORE_CASE_OPTION,
   NO_IGNORE_COMMAND_ERROR_OPTION,
+  NO_NULL_OPTION,
   NO_OVERWRITE_DIR_OPTION,
   NO_QUOTE_CHARS_OPTION,
   NO_RECURSION_OPTION,
   NO_SAME_OWNER_OPTION,
   NO_SAME_PERMISSIONS_OPTION,
+  NO_TRANSFORM_SYMLINKS_OPTION,
   NO_UNQUOTE_OPTION,
   NO_WILDCARDS_MATCH_SLASH_OPTION,
   NO_WILDCARDS_OPTION,
@@ -319,6 +322,7 @@ enum
   TOTALS_OPTION,
   TO_COMMAND_OPTION,
   TRANSFORM_OPTION,
+  TRANSFORM_SYMLINKS_OPTION,
   UNQUOTE_OPTION,
   USAGE_OPTION,
   USE_COMPRESS_PROGRAM_OPTION,
@@ -606,6 +610,8 @@ static struct argp_option options[] = {
   {"uncompress", 0, 0, OPTION_ALIAS, NULL, GRID+1 },
   {"lzma", 'J', 0, 0,
    N_("filter the archive through lzma"), GRID+1 },
+  {"lzop", LZOP_OPTION, 0, 0,
+   N_("filter the archive through lzop"), GRID+8 },
   {"use-compress-program", USE_COMPRESS_PROGRAM_OPTION, N_("PROG"), 0,
    N_("filter through PROG (must accept -d)"), GRID+1 },
 #undef GRID
@@ -622,6 +628,8 @@ static struct argp_option options[] = {
    N_("get names to extract or create from FILE"), GRID+1 },
   {"null", NULL_OPTION, 0, 0,
    N_("-T reads null-terminated names, disable -C"), GRID+1 },
+  {"no-null", NO_NULL_OPTION, 0, 0,
+   N_("disable the effect of the previous --null option"), GRID+1 },
   {"unquote", UNQUOTE_OPTION, 0, 0,
    N_("unquote filenames read with -T (default)"), GRID+1 },
   {"no-unquote", NO_UNQUOTE_OPTION, 0, 0,
@@ -680,6 +688,11 @@ static struct argp_option options[] = {
    GRID+1 },
   {"transform", TRANSFORM_OPTION, N_("EXPRESSION"), 0,
    N_("use sed replace EXPRESSION to transform file names"), GRID+1 },
+  {"xform", 0, 0, OPTION_ALIAS, NULL, GRID+1 },
+  {"transform-symlinks", TRANSFORM_SYMLINKS_OPTION, NULL, 0,
+   N_("apply transformations to symlink targets"), GRID+1 },
+  {"no-transform-symlinks", NO_TRANSFORM_SYMLINKS_OPTION, NULL, 0,
+   N_("cancel effect of the previous --transform-symlinks option"), GRID+1 },
 #undef GRID
 
 #define GRID 120
@@ -1042,6 +1055,9 @@ report_textual_dates (struct tar_args *args)
 \f
 static volatile int _argp_hang;
 
+/* Either NL or NUL, as decided by the --null option.  */
+static char filename_terminator;
+
 enum read_file_list_state  /* Result of reading file name from the list file */
   {
     file_list_success,     /* OK, name read successfully */
@@ -1050,16 +1066,16 @@ enum read_file_list_state  /* Result of reading file name from the list file */
     file_list_skip         /* Empty (zero-length) entry encountered, skip it */
   };
 
-/* Read from FP a sequence of characters up to FILENAME_TERMINATOR and put them
+/* Read from FP a sequence of characters up to TERM and put them
    into STK.
  */
 static enum read_file_list_state
-read_name_from_file (FILE *fp, struct obstack *stk)
+read_name_from_file (FILE *fp, struct obstack *stk, int term)
 {
   int c;
   size_t counter = 0;
 
-  for (c = getc (fp); c != EOF && c != filename_terminator; c = getc (fp))
+  for (c = getc (fp); c != EOF && c != term; c = getc (fp))
     {
       if (c == 0)
        {
@@ -1140,7 +1156,8 @@ update_argv (const char *filename, struct argp_state *state)
   size_t new_argc;
   bool is_stdin = false;
   enum read_file_list_state read_state;
-
+  int term = filename_terminator;
+  
   if (!strcmp (filename, "-"))
     {
       is_stdin = true;
@@ -1154,7 +1171,8 @@ update_argv (const char *filename, struct argp_state *state)
        open_fatal (filename);
     }
 
-  while ((read_state = read_name_from_file (fp, &argv_stk)) != file_list_end)
+  while ((read_state = read_name_from_file (fp, &argv_stk, term))
+        != file_list_end)
     {
       switch (read_state)
        {
@@ -1183,7 +1201,7 @@ update_argv (const char *filename, struct argp_state *state)
            obstack_1grow (&argv_stk, 0);
            count = 1;
            /* Read rest of files using new filename terminator */
-           filename_terminator = 0;
+           term = 0;
            break;
          }
 
@@ -1200,7 +1218,7 @@ update_argv (const char *filename, struct argp_state *state)
 
   start = obstack_finish (&argv_stk);
 
-  if (filename_terminator == 0)
+  if (term == 0)
     for (p = start; *p; p += strlen (p) + 1)
       if (p[0] == '-')
        count++;
@@ -1216,7 +1234,7 @@ update_argv (const char *filename, struct argp_state *state)
 
   for (i = state->next, p = start; *p; p += strlen (p) + 1, i++)
     {
-      if (filename_terminator == 0 && p[0] == '-')
+      if (term == 0 && p[0] == '-')
        state->argv[i++] = "--add-file";
       state->argv[i] = p;
     }
@@ -1397,6 +1415,10 @@ parse_opt (int key, char *arg, struct argp_state *state)
       }
       break;
 
+    case LZOP_OPTION:
+      set_use_compress_program_option ("lzop");
+      break;
+      
     case 'm':
       touch_option = true;
       break;
@@ -1738,6 +1760,10 @@ parse_opt (int key, char *arg, struct argp_state *state)
       filename_terminator = '\0';
       break;
 
+    case NO_NULL_OPTION:
+      filename_terminator = '\n';
+      break;
+
     case NUMERIC_OWNER_OPTION:
       numeric_owner_option = true;
       break;
@@ -1800,6 +1826,8 @@ parse_opt (int key, char *arg, struct argp_state *state)
       /* FIXME: What it is good for? */
       same_permissions_option = true;
       same_order_option = true;
+      WARN ((0, 0, _("The --preserve option is deprecated, "
+                    "use --preserve-permissions --preserve-order instead")));
       break;
 
     case RECORD_SIZE_OPTION:
@@ -1883,6 +1911,14 @@ parse_opt (int key, char *arg, struct argp_state *state)
       set_transform_expr (arg);
       break;
 
+    case TRANSFORM_SYMLINKS_OPTION:
+      transform_symlinks_option = true;
+      break;
+
+    case NO_TRANSFORM_SYMLINKS_OPTION:
+      transform_symlinks_option = false;
+      break;
+      
     case USE_COMPRESS_PROGRAM_OPTION:
       set_use_compress_program_option (arg);
       break;
@@ -2324,6 +2360,13 @@ decode_options (int argc, char **argv)
   else if (utc_option)
     verbose_option = 2;
 
+  if (tape_length_option && tape_length_option < record_size)
+    USAGE_ERROR ((0, 0, _("Volume length cannot be less than record size")));
+
+  if (same_order_option && listed_incremental_option)
+    USAGE_ERROR ((0, 0, _("--preserve-order is not compatible with "
+                         "--listed-incremental")));
+  
   /* Forbid using -c with no input files whatsoever.  Check that `-f -',
      explicit or implied, is used correctly.  */