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/* readlink.c - Return string representation of a symbolic link.
*
* Copyright 2007 Rob Landley <rob@landley.net>
USE_READLINK(NEWTOY(readlink, "<1>1femnq[-fem]", TOYFLAG_BIN))
config READLINK
bool "readlink"
default n
help
usage: readlink FILE
With no options, show what symlink points to, return error if not symlink.
Options for producing cannonical paths (all symlinks/./.. resolved):
-e cannonical path to existing file (fail if does not exist)
-f cannonical path to creatable file (fail if directory does not exist)
-m cannonical path
-n no trailing newline
-q quiet (no output, just error code)
*/
#define FOR_readlink
#include "toys.h"
void readlink_main(void)
{
char *s;
// Calculating full cannonical path?
if (toys.optflags & (FLAG_f|FLAG_e|FLAG_m)) {
unsigned u = 0;
if (toys.optflags & FLAG_f) u++;
if (toys.optflags & FLAG_m) u=999999999;
s = xabspath(*toys.optargs, u);
} else s = xreadlink(*toys.optargs);
if (s) {
if (!(toys.optflags & FLAG_q))
xprintf((toys.optflags & FLAG_n) ? "%s" : "%s\n", s);
if (CFG_TOYBOX_FREE) free(s);
} else toys.exitval = 1;
}
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