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