style(3p/nix): Remove 'using std::*' from types.hh r/840

It is considered bad form to use things from includes in headers, as
these directives propagate to everywhere else and can make it
confusing.

types.hh (which is includes almost literally everywhere) had some of
these directives, which this commit removes.

1 files changed, 15 insertions, 14 deletions

diff --git a/third_party/nix/src/libstore/download.cc b/third_party/nix/src/libstore/download.cc
index 8767344787..c96caf474c 100644
--- a/third_party/nix/src/libstore/download.cc
+++ b/third_party/nix/src/libstore/download.cc
@@ -177,7 +177,7 @@ struct CurlDownloader : public Downloader {
       DLOG(INFO) << "got header for '" << request.uri << "': " << trim(line);
       if (line.compare(0, 5, "HTTP/") == 0) {  // new response starts
         result.etag = "";
-        auto ss = tokenizeString<vector<string>>(line, " ");
+        auto ss = tokenizeString<std::vector<std::string>>(line, " ");
         status = ss.size() >= 2 ? ss[1] : "";
         result.data = std::make_shared<std::string>();
         result.bodySize = 0;
@@ -185,10 +185,10 @@ struct CurlDownloader : public Downloader {
         encoding = "";
       } else {
         auto i = line.find(':');
-        if (i != string::npos) {
-          string name = toLower(trim(string(line, 0, i)));
+        if (i != std::string::npos) {
+          std::string name = toLower(trim(std::string(line, 0, i)));
           if (name == "etag") {
-            result.etag = trim(string(line, i + 1));
+            result.etag = trim(std::string(line, i + 1));
             /* Hack to work around a GitHub bug: it sends
                ETags, but ignores If-None-Match. So if we get
                the expected ETag on a 200 response, then shut
@@ -200,7 +200,7 @@ struct CurlDownloader : public Downloader {
               return 0;
             }
           } else if (name == "content-encoding") {
-            encoding = trim(string(line, i + 1));
+            encoding = trim(std::string(line, i + 1));
           } else if (name == "accept-ranges" &&
                      toLower(trim(std::string(line, i + 1))) == "bytes") {
             acceptRanges = true;
@@ -868,8 +868,8 @@ CachedDownloadResult Downloader::downloadCached(
   auto name = request.name;
   if (name.empty()) {
     auto p = url.rfind('/');
-    if (p != string::npos) {
-      name = string(url, p + 1);
+    if (p != std::string::npos) {
+      name = std::string(url, p + 1);
     }
   }
 
@@ -888,8 +888,8 @@ CachedDownloadResult Downloader::downloadCached(
   Path cacheDir = getCacheDir() + "/nix/tarballs";
   createDirs(cacheDir);
 
-  string urlHash = hashString(htSHA256, name + std::string("\0"s) + url)
-                       .to_string(Base32, false);
+  std::string urlHash = hashString(htSHA256, name + std::string("\0"s) + url)
+                            .to_string(Base32, false);
 
   Path dataFile = cacheDir + "/" + urlHash + ".info";
   Path fileLink = cacheDir + "/" + urlHash + "-file";
@@ -898,7 +898,7 @@ CachedDownloadResult Downloader::downloadCached(
 
   Path storePath;
 
-  string expectedETag;
+  std::string expectedETag;
 
   bool skip = false;
 
@@ -908,7 +908,8 @@ CachedDownloadResult Downloader::downloadCached(
     storePath = readLink(fileLink);
     store->addTempRoot(storePath);
     if (store->isValidPath(storePath)) {
-      auto ss = tokenizeString<vector<string>>(readFile(dataFile), "\n");
+      auto ss =
+          tokenizeString<std::vector<std::string>>(readFile(dataFile), "\n");
       if (ss.size() >= 3 && ss[0] == url) {
         time_t lastChecked;
         if (string2Int(ss[2], lastChecked) &&
@@ -1009,15 +1010,15 @@ CachedDownloadResult Downloader::downloadCached(
   return result;
 }
 
-bool isUri(const string& s) {
+bool isUri(const std::string& s) {
   if (s.compare(0, 8, "channel:") == 0) {
     return true;
   }
   size_t pos = s.find("://");
-  if (pos == string::npos) {
+  if (pos == std::string::npos) {
     return false;
   }
-  string scheme(s, 0, pos);
+  std::string scheme(s, 0, pos);
   return scheme == "http" || scheme == "https" || scheme == "file" ||
          scheme == "channel" || scheme == "git" || scheme == "s3" ||
          scheme == "ssh";