style(3p/nix): Reformat project in Google C++ style r/740

Reformatted with:

    fd . -e hh -e cc | xargs clang-format -i

1 files changed, 199 insertions, 193 deletions

diff --git a/third_party/nix/src/libexpr/primops/fetchGit.cc b/third_party/nix/src/libexpr/primops/fetchGit.cc
index 90f600284b22..e1edf9a3e58e 100644
--- a/third_party/nix/src/libexpr/primops/fetchGit.cc
+++ b/third_party/nix/src/libexpr/primops/fetchGit.cc
@@ -1,247 +1,253 @@
-#include "primops.hh"
-#include "eval-inline.hh"
-#include "download.hh"
-#include "store-api.hh"
-#include "pathlocks.hh"
-#include "hash.hh"
-
 #include <sys/time.h>
-
-#include <regex>
-
 #include <nlohmann/json.hpp>
+#include <regex>
+#include "download.hh"
+#include "eval-inline.hh"
+#include "hash.hh"
+#include "pathlocks.hh"
+#include "primops.hh"
+#include "store-api.hh"
 
 using namespace std::string_literals;
 
 namespace nix {
 
-struct GitInfo
-{
-    Path storePath;
-    std::string rev;
-    std::string shortRev;
-    uint64_t revCount = 0;
+struct GitInfo {
+  Path storePath;
+  std::string rev;
+  std::string shortRev;
+  uint64_t revCount = 0;
 };
 
 std::regex revRegex("^[0-9a-fA-F]{40}$");
 
-GitInfo exportGit(ref<Store> store, const std::string & uri,
-    std::optional<std::string> ref, std::string rev,
-    const std::string & name)
-{
-    if (evalSettings.pureEval && rev == "")
-        throw Error("in pure evaluation mode, 'fetchGit' requires a Git revision");
-
-    if (!ref && rev == "" && hasPrefix(uri, "/") && pathExists(uri + "/.git")) {
-
-        bool clean = true;
-
-        try {
-            runProgram("git", true, { "-C", uri, "diff-index", "--quiet", "HEAD", "--" });
-        } catch (ExecError & e) {
-            if (!WIFEXITED(e.status) || WEXITSTATUS(e.status) != 1) throw;
-            clean = false;
-        }
-
-        if (!clean) {
-
-            /* This is an unclean working tree. So copy all tracked
-               files. */
-
-            GitInfo gitInfo;
-            gitInfo.rev = "0000000000000000000000000000000000000000";
-            gitInfo.shortRev = std::string(gitInfo.rev, 0, 7);
-
-            auto files = tokenizeString<std::set<std::string>>(
-                runProgram("git", true, { "-C", uri, "ls-files", "-z" }), "\0"s);
-
-            PathFilter filter = [&](const Path & p) -> bool {
-                assert(hasPrefix(p, uri));
-                std::string file(p, uri.size() + 1);
-
-                auto st = lstat(p);
+GitInfo exportGit(ref<Store> store, const std::string& uri,
+                  std::optional<std::string> ref, std::string rev,
+                  const std::string& name) {
+  if (evalSettings.pureEval && rev == "")
+    throw Error("in pure evaluation mode, 'fetchGit' requires a Git revision");
 
-                if (S_ISDIR(st.st_mode)) {
-                    auto prefix = file + "/";
-                    auto i = files.lower_bound(prefix);
-                    return i != files.end() && hasPrefix(*i, prefix);
-                }
+  if (!ref && rev == "" && hasPrefix(uri, "/") && pathExists(uri + "/.git")) {
+    bool clean = true;
 
-                return files.count(file);
-            };
-
-            gitInfo.storePath = store->addToStore("source", uri, true, htSHA256, filter);
-
-            return gitInfo;
-        }
-
-        // clean working tree, but no ref or rev specified.  Use 'HEAD'.
-        rev = chomp(runProgram("git", true, { "-C", uri, "rev-parse", "HEAD" }));
-        ref = "HEAD"s;
+    try {
+      runProgram("git", true,
+                 {"-C", uri, "diff-index", "--quiet", "HEAD", "--"});
+    } catch (ExecError& e) {
+      if (!WIFEXITED(e.status) || WEXITSTATUS(e.status) != 1) throw;
+      clean = false;
     }
 
-    if (!ref) ref = "HEAD"s;
+    if (!clean) {
+      /* This is an unclean working tree. So copy all tracked
+         files. */
 
-    if (rev != "" && !std::regex_match(rev, revRegex))
-        throw Error("invalid Git revision '%s'", rev);
+      GitInfo gitInfo;
+      gitInfo.rev = "0000000000000000000000000000000000000000";
+      gitInfo.shortRev = std::string(gitInfo.rev, 0, 7);
 
-    deletePath(getCacheDir() + "/nix/git");
+      auto files = tokenizeString<std::set<std::string>>(
+          runProgram("git", true, {"-C", uri, "ls-files", "-z"}), "\0"s);
 
-    Path cacheDir = getCacheDir() + "/nix/gitv2/" + hashString(htSHA256, uri).to_string(Base32, false);
+      PathFilter filter = [&](const Path& p) -> bool {
+        assert(hasPrefix(p, uri));
+        std::string file(p, uri.size() + 1);
 
-    if (!pathExists(cacheDir)) {
-        createDirs(dirOf(cacheDir));
-        runProgram("git", true, { "init", "--bare", cacheDir });
-    }
+        auto st = lstat(p);
 
-    Path localRefFile;
-    if (ref->compare(0, 5, "refs/") == 0)
-        localRefFile = cacheDir + "/" + *ref;
-    else
-        localRefFile = cacheDir + "/refs/heads/" + *ref;
-
-    bool doFetch;
-    time_t now = time(0);
-    /* If a rev was specified, we need to fetch if it's not in the
-       repo. */
-    if (rev != "") {
-        try {
-            runProgram("git", true, { "-C", cacheDir, "cat-file", "-e", rev });
-            doFetch = false;
-        } catch (ExecError & e) {
-            if (WIFEXITED(e.status)) {
-                doFetch = true;
-            } else {
-                throw;
-            }
+        if (S_ISDIR(st.st_mode)) {
+          auto prefix = file + "/";
+          auto i = files.lower_bound(prefix);
+          return i != files.end() && hasPrefix(*i, prefix);
         }
-    } else {
-        /* If the local ref is older than ‘tarball-ttl’ seconds, do a
-           git fetch to update the local ref to the remote ref. */
-        struct stat st;
-        doFetch = stat(localRefFile.c_str(), &st) != 0 ||
-            (uint64_t) st.st_mtime + settings.tarballTtl <= (uint64_t) now;
-    }
-    if (doFetch)
-    {
-        Activity act(*logger, lvlTalkative, actUnknown, fmt("fetching Git repository '%s'", uri));
 
-        // FIXME: git stderr messes up our progress indicator, so
-        // we're using --quiet for now. Should process its stderr.
-        runProgram("git", true, { "-C", cacheDir, "fetch", "--quiet", "--force", "--", uri, fmt("%s:%s", *ref, *ref) });
+        return files.count(file);
+      };
 
-        struct timeval times[2];
-        times[0].tv_sec = now;
-        times[0].tv_usec = 0;
-        times[1].tv_sec = now;
-        times[1].tv_usec = 0;
+      gitInfo.storePath =
+          store->addToStore("source", uri, true, htSHA256, filter);
 
-        utimes(localRefFile.c_str(), times);
+      return gitInfo;
     }
 
-    // FIXME: check whether rev is an ancestor of ref.
-    GitInfo gitInfo;
-    gitInfo.rev = rev != "" ? rev : chomp(readFile(localRefFile));
-    gitInfo.shortRev = std::string(gitInfo.rev, 0, 7);
+    // clean working tree, but no ref or rev specified.  Use 'HEAD'.
+    rev = chomp(runProgram("git", true, {"-C", uri, "rev-parse", "HEAD"}));
+    ref = "HEAD"s;
+  }
 
-    printTalkative("using revision %s of repo '%s'", gitInfo.rev, uri);
+  if (!ref) ref = "HEAD"s;
 
-    std::string storeLinkName = hashString(htSHA512, name + std::string("\0"s) + gitInfo.rev).to_string(Base32, false);
-    Path storeLink = cacheDir + "/" + storeLinkName + ".link";
-    PathLocks storeLinkLock({storeLink}, fmt("waiting for lock on '%1%'...", storeLink)); // FIXME: broken
+  if (rev != "" && !std::regex_match(rev, revRegex))
+    throw Error("invalid Git revision '%s'", rev);
 
-    try {
-        auto json = nlohmann::json::parse(readFile(storeLink));
+  deletePath(getCacheDir() + "/nix/git");
 
-        assert(json["name"] == name && json["rev"] == gitInfo.rev);
+  Path cacheDir = getCacheDir() + "/nix/gitv2/" +
+                  hashString(htSHA256, uri).to_string(Base32, false);
 
-        gitInfo.storePath = json["storePath"];
+  if (!pathExists(cacheDir)) {
+    createDirs(dirOf(cacheDir));
+    runProgram("git", true, {"init", "--bare", cacheDir});
+  }
 
-        if (store->isValidPath(gitInfo.storePath)) {
-            gitInfo.revCount = json["revCount"];
-            return gitInfo;
-        }
+  Path localRefFile;
+  if (ref->compare(0, 5, "refs/") == 0)
+    localRefFile = cacheDir + "/" + *ref;
+  else
+    localRefFile = cacheDir + "/refs/heads/" + *ref;
 
-    } catch (SysError & e) {
-        if (e.errNo != ENOENT) throw;
+  bool doFetch;
+  time_t now = time(0);
+  /* If a rev was specified, we need to fetch if it's not in the
+     repo. */
+  if (rev != "") {
+    try {
+      runProgram("git", true, {"-C", cacheDir, "cat-file", "-e", rev});
+      doFetch = false;
+    } catch (ExecError& e) {
+      if (WIFEXITED(e.status)) {
+        doFetch = true;
+      } else {
+        throw;
+      }
     }
+  } else {
+    /* If the local ref is older than ‘tarball-ttl’ seconds, do a
+       git fetch to update the local ref to the remote ref. */
+    struct stat st;
+    doFetch = stat(localRefFile.c_str(), &st) != 0 ||
+              (uint64_t)st.st_mtime + settings.tarballTtl <= (uint64_t)now;
+  }
+  if (doFetch) {
+    Activity act(*logger, lvlTalkative, actUnknown,
+                 fmt("fetching Git repository '%s'", uri));
+
+    // FIXME: git stderr messes up our progress indicator, so
+    // we're using --quiet for now. Should process its stderr.
+    runProgram("git", true,
+               {"-C", cacheDir, "fetch", "--quiet", "--force", "--", uri,
+                fmt("%s:%s", *ref, *ref)});
+
+    struct timeval times[2];
+    times[0].tv_sec = now;
+    times[0].tv_usec = 0;
+    times[1].tv_sec = now;
+    times[1].tv_usec = 0;
+
+    utimes(localRefFile.c_str(), times);
+  }
+
+  // FIXME: check whether rev is an ancestor of ref.
+  GitInfo gitInfo;
+  gitInfo.rev = rev != "" ? rev : chomp(readFile(localRefFile));
+  gitInfo.shortRev = std::string(gitInfo.rev, 0, 7);
+
+  printTalkative("using revision %s of repo '%s'", gitInfo.rev, uri);
+
+  std::string storeLinkName =
+      hashString(htSHA512, name + std::string("\0"s) + gitInfo.rev)
+          .to_string(Base32, false);
+  Path storeLink = cacheDir + "/" + storeLinkName + ".link";
+  PathLocks storeLinkLock({storeLink}, fmt("waiting for lock on '%1%'...",
+                                           storeLink));  // FIXME: broken
+
+  try {
+    auto json = nlohmann::json::parse(readFile(storeLink));
+
+    assert(json["name"] == name && json["rev"] == gitInfo.rev);
+
+    gitInfo.storePath = json["storePath"];
+
+    if (store->isValidPath(gitInfo.storePath)) {
+      gitInfo.revCount = json["revCount"];
+      return gitInfo;
+    }
+
+  } catch (SysError& e) {
+    if (e.errNo != ENOENT) throw;
+  }
 
-    // FIXME: should pipe this, or find some better way to extract a
-    // revision.
-    auto tar = runProgram("git", true, { "-C", cacheDir, "archive", gitInfo.rev });
+  // FIXME: should pipe this, or find some better way to extract a
+  // revision.
+  auto tar = runProgram("git", true, {"-C", cacheDir, "archive", gitInfo.rev});
 
-    Path tmpDir = createTempDir();
-    AutoDelete delTmpDir(tmpDir, true);
+  Path tmpDir = createTempDir();
+  AutoDelete delTmpDir(tmpDir, true);
 
-    runProgram("tar", true, { "x", "-C", tmpDir }, tar);
+  runProgram("tar", true, {"x", "-C", tmpDir}, tar);
 
-    gitInfo.storePath = store->addToStore(name, tmpDir);
+  gitInfo.storePath = store->addToStore(name, tmpDir);
 
-    gitInfo.revCount = std::stoull(runProgram("git", true, { "-C", cacheDir, "rev-list", "--count", gitInfo.rev }));
+  gitInfo.revCount = std::stoull(runProgram(
+      "git", true, {"-C", cacheDir, "rev-list", "--count", gitInfo.rev}));
 
-    nlohmann::json json;
-    json["storePath"] = gitInfo.storePath;
-    json["uri"] = uri;
-    json["name"] = name;
-    json["rev"] = gitInfo.rev;
-    json["revCount"] = gitInfo.revCount;
+  nlohmann::json json;
+  json["storePath"] = gitInfo.storePath;
+  json["uri"] = uri;
+  json["name"] = name;
+  json["rev"] = gitInfo.rev;
+  json["revCount"] = gitInfo.revCount;
 
-    writeFile(storeLink, json.dump());
+  writeFile(storeLink, json.dump());
 
-    return gitInfo;
+  return gitInfo;
 }
 
-static void prim_fetchGit(EvalState & state, const Pos & pos, Value * * args, Value & v)
-{
-    std::string url;
-    std::optional<std::string> ref;
-    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 : *args[0]->attrs) {
-            string n(attr.name);
-            if (n == "url")
-                url = state.coerceToString(*attr.pos, *attr.value, context, false, false);
-            else if (n == "ref")
-                ref = state.forceStringNoCtx(*attr.value, *attr.pos);
-            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 'fetchGit', at %s", attr.name, *attr.pos);
-        }
+static void prim_fetchGit(EvalState& state, const Pos& pos, Value** args,
+                          Value& v) {
+  std::string url;
+  std::optional<std::string> ref;
+  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 : *args[0]->attrs) {
+      string n(attr.name);
+      if (n == "url")
+        url =
+            state.coerceToString(*attr.pos, *attr.value, context, false, false);
+      else if (n == "ref")
+        ref = state.forceStringNoCtx(*attr.value, *attr.pos);
+      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 'fetchGit', at %s",
+                        attr.name, *attr.pos);
+    }
 
-        if (url.empty())
-            throw EvalError(format("'url' argument required, at %1%") % pos);
+    if (url.empty())
+      throw EvalError(format("'url' argument required, at %1%") % pos);
 
-    } else
-        url = state.coerceToString(pos, *args[0], context, false, false);
+  } 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);
+  // FIXME: git externals probably can be used to bypass the URI
+  // whitelist. Ah well.
+  state.checkURI(url);
 
-    auto gitInfo = exportGit(state.store, url, ref, rev, name);
+  auto gitInfo = exportGit(state.store, url, ref, rev, name);
 
-    state.mkAttrs(v, 8);
-    mkString(*state.allocAttr(v, state.sOutPath), gitInfo.storePath, PathSet({gitInfo.storePath}));
-    mkString(*state.allocAttr(v, state.symbols.create("rev")), gitInfo.rev);
-    mkString(*state.allocAttr(v, state.symbols.create("shortRev")), gitInfo.shortRev);
-    mkInt(*state.allocAttr(v, state.symbols.create("revCount")), gitInfo.revCount);
-    v.attrs->sort();
+  state.mkAttrs(v, 8);
+  mkString(*state.allocAttr(v, state.sOutPath), gitInfo.storePath,
+           PathSet({gitInfo.storePath}));
+  mkString(*state.allocAttr(v, state.symbols.create("rev")), gitInfo.rev);
+  mkString(*state.allocAttr(v, state.symbols.create("shortRev")),
+           gitInfo.shortRev);
+  mkInt(*state.allocAttr(v, state.symbols.create("revCount")),
+        gitInfo.revCount);
+  v.attrs->sort();
 
-    if (state.allowedPaths)
-        state.allowedPaths->insert(state.store->toRealPath(gitInfo.storePath));
+  if (state.allowedPaths)
+    state.allowedPaths->insert(state.store->toRealPath(gitInfo.storePath));
 }
 
 static RegisterPrimOp r("fetchGit", 1, prim_fetchGit);
 
-}
+}  // namespace nix