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-rw-r--r--third_party/nix/src/libexpr/primops/fetchMercurial.cc246
1 files changed, 0 insertions, 246 deletions
diff --git a/third_party/nix/src/libexpr/primops/fetchMercurial.cc b/third_party/nix/src/libexpr/primops/fetchMercurial.cc
deleted file mode 100644
index 13dc61766fe0..000000000000
--- a/third_party/nix/src/libexpr/primops/fetchMercurial.cc
+++ /dev/null
@@ -1,246 +0,0 @@
-#include <nlohmann/json.hpp>
-#include <regex>
-
-#include <absl/strings/ascii.h>
-#include <absl/strings/match.h>
-#include <absl/strings/str_split.h>
-#include <glog/logging.h>
-#include <sys/time.h>
-
-#include "libexpr/eval-inline.hh"
-#include "libexpr/primops.hh"
-#include "libstore/download.hh"
-#include "libstore/pathlocks.hh"
-#include "libstore/store-api.hh"
-
-using namespace std::string_literals;
-
-namespace nix {
-
-struct HgInfo {
-  Path storePath;
-  std::string branch;
-  std::string rev;
-  uint64_t revCount = 0;
-};
-
-std::regex commitHashRegex("^[0-9a-fA-F]{40}$");
-
-HgInfo exportMercurial(ref<Store> store, const std::string& uri,
-                       std::string rev, const std::string& name) {
-  if (evalSettings.pureEval && rev == "") {
-    throw Error(
-        "in pure evaluation mode, 'fetchMercurial' requires a Mercurial "
-        "revision");
-  }
-
-  if (rev == "" && absl::StartsWith(uri, "/") && pathExists(uri + "/.hg")) {
-    bool clean = runProgram("hg", true,
-                            {"status", "-R", uri, "--modified", "--added",
-                             "--removed"}) == "";
-
-    if (!clean) {
-      /* This is an unclean working tree. So copy all tracked
-         files. */
-
-      DLOG(INFO) << "copying unclean Mercurial working tree '" << uri << "'";
-
-      HgInfo hgInfo;
-      hgInfo.rev = "0000000000000000000000000000000000000000";
-      hgInfo.branch = absl::StripTrailingAsciiWhitespace(
-          runProgram("hg", true, {"branch", "-R", uri}));
-
-      std::set<std::string> files = absl::StrSplit(
-          runProgram("hg", true,
-                     {"status", "-R", uri, "--clean", "--modified", "--added",
-                      "--no-status", "--print0"}),
-          absl::ByChar('\0'), absl::SkipEmpty());
-
-      PathFilter filter = [&](const Path& p) -> bool {
-        assert(absl::StartsWith(p, uri));
-        std::string file(p, uri.size() + 1);
-
-        auto st = lstat(p);
-
-        if (S_ISDIR(st.st_mode)) {
-          auto prefix = file + "/";
-          auto i = files.lower_bound(prefix);
-          return i != files.end() && absl::StartsWith(*i, prefix);
-        }
-
-        return files.count(file);
-      };
-
-      hgInfo.storePath =
-          store->addToStore("source", uri, true, htSHA256, filter);
-
-      return hgInfo;
-    }
-  }
-
-  if (rev == "") {
-    rev = "default";
-  }
-
-  Path cacheDir = fmt("%s/nix/hg/%s", getCacheDir(),
-                      hashString(htSHA256, uri).to_string(Base32, false));
-
-  Path stampFile = fmt("%s/.hg/%s.stamp", cacheDir,
-                       hashString(htSHA512, rev).to_string(Base32, false));
-
-  /* If we haven't pulled this repo less than ‘tarball-ttl’ seconds,
-     do so now. */
-  time_t now = time(0);
-  struct stat st;
-  if (stat(stampFile.c_str(), &st) != 0 ||
-      static_cast<uint64_t>(st.st_mtime) + settings.tarballTtl <=
-          static_cast<uint64_t>(now)) {
-    /* Except that if this is a commit hash that we already have,
-       we don't have to pull again. */
-    if (!(std::regex_match(rev, commitHashRegex) && pathExists(cacheDir) &&
-          runProgram(RunOptions("hg", {"log", "-R", cacheDir, "-r", rev,
-                                       "--template", "1"})
-                         .killStderr(true))
-                  .second == "1")) {
-      DLOG(INFO) << "fetching Mercurial repository '" << uri << "'";
-
-      if (pathExists(cacheDir)) {
-        try {
-          runProgram("hg", true, {"pull", "-R", cacheDir, "--", uri});
-        } catch (ExecError& e) {
-          std::string transJournal = cacheDir + "/.hg/store/journal";
-          /* hg throws "abandoned transaction" error only if this file exists */
-          if (pathExists(transJournal)) {
-            runProgram("hg", true, {"recover", "-R", cacheDir});
-            runProgram("hg", true, {"pull", "-R", cacheDir, "--", uri});
-          } else {
-            throw ExecError(e.status,
-                            fmt("'hg pull' %s", statusToString(e.status)));
-          }
-        }
-      } else {
-        createDirs(dirOf(cacheDir));
-        runProgram("hg", true, {"clone", "--noupdate", "--", uri, cacheDir});
-      }
-    }
-
-    writeFile(stampFile, "");
-  }
-
-  std::vector<std::string> tokens =
-      absl::StrSplit(runProgram("hg", true,
-                                {"log", "-R", cacheDir, "-r", rev, "--template",
-                                 "{node} {rev} {branch}"}),
-                     absl::ByAnyChar(" \t\n\r"), absl::SkipEmpty());
-  assert(tokens.size() == 3);
-
-  HgInfo hgInfo;
-  hgInfo.rev = tokens[0];
-  hgInfo.revCount = std::stoull(tokens[1]);
-  hgInfo.branch = tokens[2];
-
-  std::string storeLinkName =
-      hashString(htSHA512, name + std::string("\0"s) + hgInfo.rev)
-          .to_string(Base32, false);
-  Path storeLink = fmt("%s/.hg/%s.link", cacheDir, storeLinkName);
-
-  try {
-    auto json = nlohmann::json::parse(readFile(storeLink));
-
-    assert(json["name"] == name && json["rev"] == hgInfo.rev);
-
-    hgInfo.storePath = json["storePath"];
-
-    if (store->isValidPath(hgInfo.storePath)) {
-      DLOG(INFO) << "using cached Mercurial store path '" << hgInfo.storePath
-                 << "'";
-      return hgInfo;
-    }
-
-  } catch (SysError& e) {
-    if (e.errNo != ENOENT) {
-      throw;
-    }
-  }
-
-  Path tmpDir = createTempDir();
-  AutoDelete delTmpDir(tmpDir, true);
-
-  runProgram("hg", true, {"archive", "-R", cacheDir, "-r", rev, tmpDir});
-
-  deletePath(tmpDir + "/.hg_archival.txt");
-
-  hgInfo.storePath = store->addToStore(name, tmpDir);
-
-  nlohmann::json json;
-  json["storePath"] = hgInfo.storePath;
-  json["uri"] = uri;
-  json["name"] = name;
-  json["branch"] = hgInfo.branch;
-  json["rev"] = hgInfo.rev;
-  json["revCount"] = hgInfo.revCount;
-
-  writeFile(storeLink, json.dump());
-
-  return hgInfo;
-}
-
-static void prim_fetchMercurial(EvalState& state, const Pos& pos, Value** args,
-                                Value& v) {
-  std::string url;
-  std::string rev;
-  std::string name = "source";
-  PathSet context;
-
-  state.forceValue(*args[0]);
-
-  if (args[0]->type == tAttrs) {
-    state.forceAttrs(*args[0], pos);
-
-    for (auto& attr_iter : *args[0]->attrs) {
-      auto& attr = attr_iter.second;
-      std::string n(attr.name);
-      if (n == "url") {
-        url =
-            state.coerceToString(*attr.pos, *attr.value, context, false, false);
-      } else if (n == "rev") {
-        rev = state.forceStringNoCtx(*attr.value, *attr.pos);
-      } else if (n == "name") {
-        name = state.forceStringNoCtx(*attr.value, *attr.pos);
-      } else {
-        throw EvalError("unsupported argument '%s' to 'fetchMercurial', at %s",
-                        attr.name, *attr.pos);
-      }
-    }
-
-    if (url.empty()) {
-      throw EvalError(format("'url' argument required, at %1%") % pos);
-    }
-
-  } else {
-    url = state.coerceToString(pos, *args[0], context, false, false);
-  }
-
-  // FIXME: git externals probably can be used to bypass the URI
-  // whitelist. Ah well.
-  state.checkURI(url);
-
-  auto hgInfo = exportMercurial(state.store, url, rev, name);
-
-  state.mkAttrs(v, 8);
-  mkString(*state.allocAttr(v, state.sOutPath), hgInfo.storePath,
-           PathSet({hgInfo.storePath}));
-  mkString(*state.allocAttr(v, state.symbols.Create("branch")), hgInfo.branch);
-  mkString(*state.allocAttr(v, state.symbols.Create("rev")), hgInfo.rev);
-  mkString(*state.allocAttr(v, state.symbols.Create("shortRev")),
-           std::string(hgInfo.rev, 0, 12));
-  mkInt(*state.allocAttr(v, state.symbols.Create("revCount")), hgInfo.revCount);
-
-  if (state.allowedPaths) {
-    state.allowedPaths->insert(state.store->toRealPath(hgInfo.storePath));
-  }
-}
-
-static RegisterPrimOp r("fetchMercurial", 1, prim_fetchMercurial);
-
-}  // namespace nix