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88 lines
2.1 KiB
D
88 lines
2.1 KiB
D
/**
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* An improved D symbol demangler.
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*
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* Replaces *all* occurrences of mangled D symbols in the input with their
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* unmangled form, and writes the result to standard output.
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*
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* Copyright: Copyright H. S. Teoh 2012.
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* License: <a href="http://www.boost.org/LICENSE_1_0.txt">Boost License 1.0</a>.
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* Authors: H. S. Teoh
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*/
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import core.demangle;
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import std.algorithm : equal, map;
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import std.getopt;
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import std.regex;
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import std.stdio;
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import std.c.stdlib;
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void showhelp(string[] args)
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{
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stderr.writef(q"ENDHELP
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Usage: %s [options] [<inputfile>]
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Demangles all occurrences of mangled D symbols in the input and writes to
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standard output.
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If <inputfile> is omitted, standard input is read.
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Options:
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--help, -h Show this help
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ENDHELP", args[0]);
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exit(1);
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}
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auto reDemangle = regex(r"\b(_D[0-9a-zA-Z_]+)\b");
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auto ddemangle(T)(T line)
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if (is(T : const(char)[]))
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{
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return replaceAll!(a => demangle(a.hit))(line, reDemangle);
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}
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unittest
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{
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string[] testData = [
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"_D2rt4util7console8__assertFiZv",
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"random initial junk _D2rt4util7console8__assertFiZv random trailer",
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"multiple _D2rt4util7console8__assertFiZv occurrences _D2rt4util7console8__assertFiZv",
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];
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string[] expected = [
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"void rt.util.console.__assert(int)",
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"random initial junk void rt.util.console.__assert(int) random trailer",
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"multiple void rt.util.console.__assert(int) occurrences void rt.util.console.__assert(int)",
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];
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assert(equal(testData.map!ddemangle(), expected));
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}
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void main(string[] args)
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{
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// Parse command-line arguments
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try
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{
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getopt(args,
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"help|h", { showhelp(args); },
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);
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if (args.length > 2) showhelp(args);
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}
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catch(Exception e)
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{
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stderr.writeln(e.msg);
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stderr.writeln();
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showhelp(args);
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}
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// Process input
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try
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{
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auto f = (args.length==2) ? File(args[1], "r") : stdin;
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foreach (line; f.byLine())
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writeln(ddemangle(line));
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}
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catch(Exception e)
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{
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stderr.writeln(e.msg);
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exit(1);
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}
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}
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// vim:set sw=4 ts=4 expandtab:
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