#include "hash.hh" #include "shared.hh" #include <iostream> using namespace nix; int main(int argc, char * * argv) { HashType ht = htMD5; bool flat = false; bool base32 = false; bool truncate = false; enum { opHash, opTo32, opTo16 } op = opHash; Strings ss; return handleExceptions(argv[0], [&]() { initNix(); parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) { if (*arg == "--help") showManPage("nix-hash"); else if (*arg == "--version") printVersion("nix-hash"); else if (*arg == "--flat") flat = true; else if (*arg == "--base32") base32 = true; else if (*arg == "--truncate") truncate = true; else if (*arg == "--type") { string s = getArg(*arg, arg, end); ht = parseHashType(s); if (ht == htUnknown) throw UsageError(format("unknown hash type ‘%1%’") % s); } else if (*arg == "--to-base16") op = opTo16; else if (*arg == "--to-base32") op = opTo32; else if (*arg != "" && arg->at(0) == '-') return false; else ss.push_back(*arg); return true; }); if (op == opHash) { for (auto & 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 { for (auto & i : ss) { Hash h = parseHash16or32(ht, i); std::cout << format("%1%\n") % (op == opTo16 ? printHash(h) : printHash32(h)); } } }); }