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#!/usr/bin/env slsh
% -*- slang -*-
require ("cmdopt");
private variable Script_Version_String = "0.1.0";
private variable
Confirm_Move = 0,
Verbose = 0,
Force = 0,
NoClobber = 0;
private define exit_version ()
{
() = fprintf (stdout, "Version: %S\n", Script_Version_String);
exit (0);
}
private define exit_usage ()
{
variable fp = stderr;
() = fprintf (fp, "Usage: %s [options] files... dir\n", __argv[0]);
() = fprintf (fp, "Usage: %s [options] file1 file2\n", __argv[0]);
variable opts =
[
"Options:\n",
" -i Prompt before overwrite\n",
" -f Do not prompt before overwriting \n",
" -n Do not clobber\n",
" -v Be verbose \n",
" --version Show version\n",
" -h|--help Show this message\n",
];
foreach (opts)
{
variable opt = ();
() = fputs (opt, fp);
}
exit (1);
}
private define print_error ()
{
variable args = __pop_list (_NARGS);
() = fprintf (stderr, "%s: ", __argv[0]);
() = fprintf (stderr, __push_list (args));
}
private define get_yn ()
{
variable args = __pop_list (_NARGS);
() = fprintf (stdout, __push_list (args));
() = fflush (stdout);
variable yn;
if (fgets (&yn, stdin) <= 0)
return -1;
"y" == strlow (strtrim (yn));
}
private define move_file (from, to, st_to)
{
variable st_from = stat_file (from);
if (st_from == NULL)
{
() = fprintf (stderr, "Unable to access %s\n", from);
return -1;
}
if ((from == to)
|| ((st_to != NULL)
&& (st_from.st_ino == st_to.st_ino)
&& (st_from.st_dev == st_to.st_dev)))
{
print_error ("Cannot move a file to itself\n");
return -1;
}
if (st_to != NULL)
{
if (NoClobber)
{
()= fprintf(stderr, "Move %s to %s aborted because of noclobber\n",
from, to);
return -1;
}
if (Confirm_Move
&& (1 != get_yn ("%s exists. Overwrite? [y/n]", to)))
{
() = fputs ("Not Confirmed\n", stdout);
return -1;
}
}
if (0 == rename (from, to))
{
if (Verbose)
()= fprintf (stdout, "`%s' -> `%s'\n", from, to);
return 0;
}
()=fprintf (stderr, "Failed to rename %s to %s: %s\n",
from, to, errno_string (errno));
return -1;
}
private define move_files (from_files, to)
{
variable num_from = length (from_files);
variable st = stat_file (to);
if ((st == NULL) || (0 == stat_is ("dir", st.st_mode)))
{
if (num_from != 1)
{
() = fprintf (stderr, "target `%s' is not a directory\n", to);
exit (1);
}
if (-1 == move_file (from_files[0], to, st))
exit (1);
exit (0);
}
foreach (from_files)
{
variable old = ();
variable new = path_concat (to, path_basename (old));
() = move_file (old, new, stat_file (new));
}
}
define slsh_main ()
{
variable c = cmdopt_new ();
c.add("h|help", &exit_usage);
c.add("version", &exit_version);
c.add("i", &Confirm_Move);
c.add("f", &Force);
c.add("n", &NoClobber);
c.add("v", &Verbose);
variable i = c.process (__argv, 1);
if (i + 2 > __argc)
exit_usage ();
if (Confirm_Move && Force)
Confirm_Move = 0;
move_files (__argv[[i:__argc-2]], __argv[-1]);
}
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