src: Use std::copy_n

src/asio_http2_handler.h

@@ -211,7 +211,7 @@ public:
     len = 0;
 
     if (buf_) {
-      std::copy(buf_, buf_ + buflen_, std::begin(buffer));
+      std::copy_n(buf_, buflen_, std::begin(buffer));
 
       len += buflen_;
 
@@ -237,7 +237,7 @@ public:
         break;
       }
 
-      std::copy(data, data + nread, std::begin(buffer) + len);
+      std::copy_n(data, nread, std::begin(buffer) + len);
 
       len += nread;
     }

src/buffer.h

@@ -44,7 +44,7 @@ template <size_t N> struct Buffer {
   size_t write(const void *src, size_t count) {
     count = std::min(count, wleft());
     auto p = static_cast<const uint8_t *>(src);
-    last = std::copy(p, p + count, last);
+    last = std::copy_n(p, count, last);
     return count;
   }
   size_t write(size_t count) {

src/h2load.cc

@@ -1204,8 +1204,8 @@ int main(int argc, char **argv) {
   auto proto_list = util::get_default_alpn();
 #ifdef HAVE_SPDYLAY
   static const char spdy_proto_list[] = "\x8spdy/3.1\x6spdy/3\x6spdy/2";
-  std::copy(spdy_proto_list, spdy_proto_list + sizeof(spdy_proto_list) - 1,
-            std::back_inserter(proto_list));
+  std::copy_n(spdy_proto_list, sizeof(spdy_proto_list) - 1,
+              std::back_inserter(proto_list));
 #endif // HAVE_SPDYLAY
   SSL_CTX_set_alpn_protos(ssl_ctx, proto_list.data(), proto_list.size());
 #endif // OPENSSL_VERSION_NUMBER >= 0x10002000L

src/memchunk.h

@@ -33,6 +33,7 @@
 #include <cstring>
 #include <memory>
 #include <array>
+#include <algorithm>
 
 #include "template.h"
 
@@ -134,7 +135,7 @@ template <typename Memchunk> struct Memchunks {
 
     for (;;) {
       auto n = std::min(static_cast<size_t>(last - first), tail->left());
-      tail->last = std::copy(first, first + n, tail->last);
+      tail->last = std::copy_n(first, n, tail->last);
       first += n;
       len += n;
       if (first == last) {
@@ -165,7 +166,7 @@ template <typename Memchunk> struct Memchunks {
       auto n = std::min(static_cast<size_t>(last - first), m->len());
 
       assert(m->len());
-      first = std::copy(m->pos, m->pos + n, first);
+      first = std::copy_n(m->pos, n, first);
       m->pos += n;
       len -= n;
       if (m->len() > 0) {

src/util.cc

@@ -195,13 +195,13 @@ std::string http_date(time_t t) {
   auto p = std::begin(res);
 
   auto s = DAY_OF_WEEK[tms.tm_wday];
-  p = std::copy(s, s + 3, p);
+  p = std::copy_n(s, 3, p);
   *p++ = ',';
   *p++ = ' ';
   p = cpydig(p, tms.tm_mday, 2);
   *p++ = ' ';
   s = MONTH[tms.tm_mon];
-  p = std::copy(s, s + 3, p);
+  p = std::copy_n(s, 3, p);
   *p++ = ' ';
   p = cpydig(p, tms.tm_year + 1900, 4);
   *p++ = ' ';
@@ -211,7 +211,7 @@ std::string http_date(time_t t) {
   *p++ = ':';
   p = cpydig(p, tms.tm_sec, 2);
   s = " GMT";
-  p = std::copy(s, s + 4, p);
+  p = std::copy_n(s, 4, p);
 
   return res;
 }
@@ -234,7 +234,7 @@ std::string common_log_date(time_t t) {
   p = cpydig(p, tms.tm_mday, 2);
   *p++ = '/';
   auto s = MONTH[tms.tm_mon];
-  p = std::copy(s, s + 3, p);
+  p = std::copy_n(s, 3, p);
   *p++ = '/';
   p = cpydig(p, tms.tm_year + 1900, 4);
   *p++ = ':';