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#include "hash.hh"
#include "shared.hh"
#include <iostream>
using namespace nix;
void printHelp()
{
showManPage("nix-hash");
}
void run(Strings args)
{
HashType ht = htMD5;
bool flat = false;
bool base32 = false;
bool truncate = false;
enum { opHash, opTo32, opTo16 } op = opHash;
Strings ss;
for (Strings::iterator i = args.begin();
i != args.end(); i++)
{
if (*i == "--flat") flat = true;
else if (*i == "--base32") base32 = true;
else if (*i == "--truncate") truncate = true;
else if (*i == "--type") {
++i;
if (i == args.end()) throw UsageError("`--type' requires an argument");
ht = parseHashType(*i);
if (ht == htUnknown)
throw UsageError(format("unknown hash type `%1%'") % *i);
}
else if (*i == "--to-base16") op = opTo16;
else if (*i == "--to-base32") op = opTo32;
else ss.push_back(*i);
}
if (op == opHash) {
foreach (Strings::iterator, i, ss) {
Hash h = flat ? hashFile(ht, *i) : hashPath(ht, *i).first;
if (truncate && h.hashSize > 20) h = compressHash(h, 20);
std::cout << format("%1%\n") %
(base32 ? printHash32(h) : printHash(h));
}
}
else {
foreach (Strings::iterator, i, ss) {
Hash h = parseHash16or32(ht, *i);
std::cout << format("%1%\n") %
(op == opTo16 ? printHash(h) : printHash32(h));
}
}
}
string programId = "nix-hash";
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