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/* readlink.c - Return string representation of a symbolic link.
*
* Copyright 2007 Rob Landley <rob@landley.net>
USE_READLINK(NEWTOY(readlink, "<1nqmef(canonicalize)[-mef]", TOYFLAG_USR|TOYFLAG_BIN))
USE_REALPATH(NEWTOY(realpath, "<1", TOYFLAG_USR|TOYFLAG_BIN))
config READLINK
bool "readlink"
default y
help
usage: readlink FILE...
With no options, show what symlink points to, return error if not symlink.
Options for producing canonical paths (all symlinks/./.. resolved):
-e Canonical path to existing entry (fail if missing)
-f Full path (fail if directory missing)
-m Ignore missing entries, show where it would be
-n No trailing newline
-q Quiet (no output, just error code)
config REALPATH
bool "realpath"
default y
help
usage: realpath FILE...
Display the canonical absolute pathname
*/
#define FOR_readlink
#define FORCE_FLAGS
#include "toys.h"
void readlink_main(void)
{
char **arg, *s;
for (arg = toys.optargs; *arg; arg++) {
// Calculating full canonical path?
// Take advantage of flag positions to calculate m = -1, f = 0, e = 1
if (toys.optflags & (FLAG_f|FLAG_e|FLAG_m))
s = xabspath(*arg, (toys.optflags&(FLAG_f|FLAG_e))-1);
else s = xreadlink(*arg);
if (s) {
if (!FLAG(q)) xprintf(FLAG(n) ? "%s" : "%s\n", s);
if (CFG_TOYBOX_FREE) free(s);
} else toys.exitval = 1;
}
}
void realpath_main(void)
{
toys.optflags = FLAG_f;
readlink_main();
}
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