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Posted to commits@marmotta.apache.org by ss...@apache.org on 2018/04/29 19:36:00 UTC

[31/51] [partial] marmotta git commit: * Replace gtest with upstream version, including LICENSE header. * Include absl library for faster and safer string operations. * Update license headers where needed. * Removed custom code replaced by absl.

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/char_map.h
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diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/char_map.h b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/char_map.h
new file mode 100644
index 0000000..8d92963
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+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/char_map.h
@@ -0,0 +1,154 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Character Map Class
+//
+// A fast, bit-vector map for 8-bit unsigned characters.
+// This class is useful for non-character purposes as well.
+
+#ifndef ABSL_STRINGS_INTERNAL_CHAR_MAP_H_
+#define ABSL_STRINGS_INTERNAL_CHAR_MAP_H_
+
+#include <cstddef>
+#include <cstdint>
+#include <cstring>
+
+#include "absl/base/macros.h"
+#include "absl/base/port.h"
+
+namespace absl {
+namespace strings_internal {
+
+class Charmap {
+ public:
+  constexpr Charmap() : m_() {}
+
+  // Initializes with a given char*.  Note that NUL is not treated as
+  // a terminator, but rather a char to be flicked.
+  Charmap(const char* str, int len) : m_() {
+    while (len--) SetChar(*str++);
+  }
+
+  // Initializes with a given char*.  NUL is treated as a terminator
+  // and will not be in the charmap.
+  explicit Charmap(const char* str) : m_() {
+    while (*str) SetChar(*str++);
+  }
+
+  constexpr bool contains(unsigned char c) const {
+    return (m_[c / 64] >> (c % 64)) & 0x1;
+  }
+
+  // Returns true if and only if a character exists in both maps.
+  bool IntersectsWith(const Charmap& c) const {
+    for (size_t i = 0; i < ABSL_ARRAYSIZE(m_); ++i) {
+      if ((m_[i] & c.m_[i]) != 0) return true;
+    }
+    return false;
+  }
+
+  bool IsZero() const {
+    for (uint64_t c : m_) {
+      if (c != 0) return false;
+    }
+    return true;
+  }
+
+  // Containing only a single specified char.
+  static constexpr Charmap Char(char x) {
+    return Charmap(CharMaskForWord(x, 0), CharMaskForWord(x, 1),
+                   CharMaskForWord(x, 2), CharMaskForWord(x, 3));
+  }
+
+  // Containing all the chars in the C-std::string 's'.
+  // Note that this is expensively recursive because of the C++11 constexpr
+  // formulation. Use only in constexpr initializers.
+  static constexpr Charmap FromString(const char* s) {
+    return *s == 0 ? Charmap() : (Char(*s) | FromString(s + 1));
+  }
+
+  // Containing all the chars in the closed interval [lo,hi].
+  static constexpr Charmap Range(char lo, char hi) {
+    return Charmap(RangeForWord(lo, hi, 0), RangeForWord(lo, hi, 1),
+                   RangeForWord(lo, hi, 2), RangeForWord(lo, hi, 3));
+  }
+
+  friend constexpr Charmap operator&(const Charmap& a, const Charmap& b) {
+    return Charmap(a.m_[0] & b.m_[0], a.m_[1] & b.m_[1], a.m_[2] & b.m_[2],
+                   a.m_[3] & b.m_[3]);
+  }
+
+  friend constexpr Charmap operator|(const Charmap& a, const Charmap& b) {
+    return Charmap(a.m_[0] | b.m_[0], a.m_[1] | b.m_[1], a.m_[2] | b.m_[2],
+                   a.m_[3] | b.m_[3]);
+  }
+
+  friend constexpr Charmap operator~(const Charmap& a) {
+    return Charmap(~a.m_[0], ~a.m_[1], ~a.m_[2], ~a.m_[3]);
+  }
+
+ private:
+  constexpr Charmap(uint64_t b0, uint64_t b1, uint64_t b2, uint64_t b3)
+      : m_{b0, b1, b2, b3} {}
+
+  static constexpr uint64_t RangeForWord(unsigned char lo, unsigned char hi,
+                                         uint64_t word) {
+    return OpenRangeFromZeroForWord(hi + 1, word) &
+           ~OpenRangeFromZeroForWord(lo, word);
+  }
+
+  // All the chars in the specified word of the range [0, upper).
+  static constexpr uint64_t OpenRangeFromZeroForWord(uint64_t upper,
+                                                     uint64_t word) {
+    return (upper <= 64 * word)
+               ? 0
+               : (upper >= 64 * (word + 1))
+                     ? ~static_cast<uint64_t>(0)
+                     : (~static_cast<uint64_t>(0) >> (64 - upper % 64));
+  }
+
+  static constexpr uint64_t CharMaskForWord(unsigned char x, uint64_t word) {
+    return (x / 64 == word) ? (static_cast<uint64_t>(1) << (x % 64)) : 0;
+  }
+
+ private:
+  void SetChar(unsigned char c) {
+    m_[c / 64] |= static_cast<uint64_t>(1) << (c % 64);
+  }
+
+  uint64_t m_[4];
+};
+
+// Mirror the char-classifying predicates in <cctype>
+constexpr Charmap UpperCharmap() { return Charmap::Range('A', 'Z'); }
+constexpr Charmap LowerCharmap() { return Charmap::Range('a', 'z'); }
+constexpr Charmap DigitCharmap() { return Charmap::Range('0', '9'); }
+constexpr Charmap AlphaCharmap() { return LowerCharmap() | UpperCharmap(); }
+constexpr Charmap AlnumCharmap() { return DigitCharmap() | AlphaCharmap(); }
+constexpr Charmap XDigitCharmap() {
+  return DigitCharmap() | Charmap::Range('A', 'F') | Charmap::Range('a', 'f');
+}
+constexpr Charmap PrintCharmap() { return Charmap::Range(0x20, 0x7e); }
+constexpr Charmap SpaceCharmap() { return Charmap::FromString("\t\n\v\f\r "); }
+constexpr Charmap CntrlCharmap() {
+  return Charmap::Range(0, 0x7f) & ~PrintCharmap();
+}
+constexpr Charmap BlankCharmap() { return Charmap::FromString("\t "); }
+constexpr Charmap GraphCharmap() { return PrintCharmap() & ~SpaceCharmap(); }
+constexpr Charmap PunctCharmap() { return GraphCharmap() & ~AlnumCharmap(); }
+
+}  // namespace strings_internal
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_CHAR_MAP_H_

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/char_map_test.cc
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diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/char_map_test.cc b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/char_map_test.cc
new file mode 100644
index 0000000..c3601e1
--- /dev/null
+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/char_map_test.cc
@@ -0,0 +1,172 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/char_map.h"
+
+#include <cctype>
+#include <string>
+#include <vector>
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace {
+
+constexpr absl::strings_internal::Charmap everything_map =
+    ~absl::strings_internal::Charmap();
+constexpr absl::strings_internal::Charmap nothing_map{};
+
+TEST(Charmap, AllTests) {
+  const absl::strings_internal::Charmap also_nothing_map("", 0);
+  ASSERT_TRUE(everything_map.contains('\0'));
+  ASSERT_TRUE(!nothing_map.contains('\0'));
+  ASSERT_TRUE(!also_nothing_map.contains('\0'));
+  for (unsigned char ch = 1; ch != 0; ++ch) {
+    ASSERT_TRUE(everything_map.contains(ch));
+    ASSERT_TRUE(!nothing_map.contains(ch));
+    ASSERT_TRUE(!also_nothing_map.contains(ch));
+  }
+
+  const absl::strings_internal::Charmap symbols("&@#@^!@?", 5);
+  ASSERT_TRUE(symbols.contains('&'));
+  ASSERT_TRUE(symbols.contains('@'));
+  ASSERT_TRUE(symbols.contains('#'));
+  ASSERT_TRUE(symbols.contains('^'));
+  ASSERT_TRUE(!symbols.contains('!'));
+  ASSERT_TRUE(!symbols.contains('?'));
+  int cnt = 0;
+  for (unsigned char ch = 1; ch != 0; ++ch)
+    cnt += symbols.contains(ch);
+  ASSERT_EQ(cnt, 4);
+
+  const absl::strings_internal::Charmap lets("^abcde", 3);
+  const absl::strings_internal::Charmap lets2("fghij\0klmnop", 10);
+  const absl::strings_internal::Charmap lets3("fghij\0klmnop");
+  ASSERT_TRUE(lets2.contains('k'));
+  ASSERT_TRUE(!lets3.contains('k'));
+
+  ASSERT_TRUE(symbols.IntersectsWith(lets));
+  ASSERT_TRUE(!lets2.IntersectsWith(lets));
+  ASSERT_TRUE(lets.IntersectsWith(symbols));
+  ASSERT_TRUE(!lets.IntersectsWith(lets2));
+
+  ASSERT_TRUE(nothing_map.IsZero());
+  ASSERT_TRUE(!lets.IsZero());
+}
+
+namespace {
+std::string Members(const absl::strings_internal::Charmap& m) {
+  std::string r;
+  for (size_t i = 0; i < 256; ++i)
+    if (m.contains(i)) r.push_back(i);
+  return r;
+}
+
+std::string ClosedRangeString(unsigned char lo, unsigned char hi) {
+  // Don't depend on lo<hi. Just increment until lo==hi.
+  std::string s;
+  while (true) {
+    s.push_back(lo);
+    if (lo == hi) break;
+    ++lo;
+  }
+  return s;
+}
+
+}  // namespace
+
+TEST(Charmap, Constexpr) {
+  constexpr absl::strings_internal::Charmap kEmpty = nothing_map;
+  EXPECT_THAT(Members(kEmpty), "");
+  constexpr absl::strings_internal::Charmap kA =
+      absl::strings_internal::Charmap::Char('A');
+  EXPECT_THAT(Members(kA), "A");
+  constexpr absl::strings_internal::Charmap kAZ =
+      absl::strings_internal::Charmap::Range('A', 'Z');
+  EXPECT_THAT(Members(kAZ), "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+  constexpr absl::strings_internal::Charmap kIdentifier =
+      absl::strings_internal::Charmap::Range('0', '9') |
+      absl::strings_internal::Charmap::Range('A', 'Z') |
+      absl::strings_internal::Charmap::Range('a', 'z') |
+      absl::strings_internal::Charmap::Char('_');
+  EXPECT_THAT(Members(kIdentifier),
+              "0123456789"
+              "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+              "_"
+              "abcdefghijklmnopqrstuvwxyz");
+  constexpr absl::strings_internal::Charmap kAll = everything_map;
+  for (size_t i = 0; i < 256; ++i) {
+    EXPECT_TRUE(kAll.contains(i)) << i;
+  }
+  constexpr absl::strings_internal::Charmap kHello =
+      absl::strings_internal::Charmap::FromString("Hello, world!");
+  EXPECT_THAT(Members(kHello), " !,Hdelorw");
+
+  // test negation and intersection
+  constexpr absl::strings_internal::Charmap kABC =
+      absl::strings_internal::Charmap::Range('A', 'Z') &
+      ~absl::strings_internal::Charmap::Range('D', 'Z');
+  EXPECT_THAT(Members(kABC), "ABC");
+}
+
+TEST(Charmap, Range) {
+  // Exhaustive testing takes too long, so test some of the boundaries that
+  // are perhaps going to cause trouble.
+  std::vector<size_t> poi = {0,   1,   2,   3,   4,   7,   8,   9,  15,
+                             16,  17,  30,  31,  32,  33,  63,  64, 65,
+                             127, 128, 129, 223, 224, 225, 254, 255};
+  for (auto lo = poi.begin(); lo != poi.end(); ++lo) {
+    SCOPED_TRACE(*lo);
+    for (auto hi = lo; hi != poi.end(); ++hi) {
+      SCOPED_TRACE(*hi);
+      EXPECT_THAT(Members(absl::strings_internal::Charmap::Range(*lo, *hi)),
+                  ClosedRangeString(*lo, *hi));
+    }
+  }
+}
+
+bool AsBool(int x) { return static_cast<bool>(x); }
+
+TEST(CharmapCtype, Match) {
+  for (int c = 0; c < 256; ++c) {
+    SCOPED_TRACE(c);
+    SCOPED_TRACE(static_cast<char>(c));
+    EXPECT_EQ(AsBool(std::isupper(c)),
+              absl::strings_internal::UpperCharmap().contains(c));
+    EXPECT_EQ(AsBool(std::islower(c)),
+              absl::strings_internal::LowerCharmap().contains(c));
+    EXPECT_EQ(AsBool(std::isdigit(c)),
+              absl::strings_internal::DigitCharmap().contains(c));
+    EXPECT_EQ(AsBool(std::isalpha(c)),
+              absl::strings_internal::AlphaCharmap().contains(c));
+    EXPECT_EQ(AsBool(std::isalnum(c)),
+              absl::strings_internal::AlnumCharmap().contains(c));
+    EXPECT_EQ(AsBool(std::isxdigit(c)),
+              absl::strings_internal::XDigitCharmap().contains(c));
+    EXPECT_EQ(AsBool(std::isprint(c)),
+              absl::strings_internal::PrintCharmap().contains(c));
+    EXPECT_EQ(AsBool(std::isspace(c)),
+              absl::strings_internal::SpaceCharmap().contains(c));
+    EXPECT_EQ(AsBool(std::iscntrl(c)),
+              absl::strings_internal::CntrlCharmap().contains(c));
+    EXPECT_EQ(AsBool(std::isblank(c)),
+              absl::strings_internal::BlankCharmap().contains(c));
+    EXPECT_EQ(AsBool(std::isgraph(c)),
+              absl::strings_internal::GraphCharmap().contains(c));
+    EXPECT_EQ(AsBool(std::ispunct(c)),
+              absl::strings_internal::PunctCharmap().contains(c));
+  }
+}
+
+}  // namespace

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/escaping_test_common.inc
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diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/escaping_test_common.inc b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/escaping_test_common.inc
new file mode 100644
index 0000000..6f29140
--- /dev/null
+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/escaping_test_common.inc
@@ -0,0 +1,113 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This test contains common things needed by both escaping_test.cc and
+// escaping_benchmark.cc.
+
+namespace {
+
+struct {
+  absl::string_view plaintext;
+  absl::string_view cyphertext;
+} const base64_strings[] = {
+  // Some google quotes
+  // Cyphertext created with "uuencode (GNU sharutils) 4.6.3"
+  // (Note that we're testing the websafe encoding, though, so if
+  // you add messages, be sure to run "tr -- '+/' '-_'" on the output)
+  { "I was always good at math and science, and I never realized "
+    "that was unusual or somehow undesirable. So one of the things "
+    "I care a lot about is helping to remove that stigma, "
+    "to show girls that you can be feminine, you can like the things "
+    "that girls like, but you can also be really good at technology. "
+    "You can be really good at building things."
+    " - Marissa Meyer, Newsweek, 2010-12-22" "\n",
+
+    "SSB3YXMgYWx3YXlzIGdvb2QgYXQgbWF0aCBhbmQgc2NpZW5jZSwgYW5kIEkg"
+    "bmV2ZXIgcmVhbGl6ZWQgdGhhdCB3YXMgdW51c3VhbCBvciBzb21laG93IHVu"
+    "ZGVzaXJhYmxlLiBTbyBvbmUgb2YgdGhlIHRoaW5ncyBJIGNhcmUgYSBsb3Qg"
+    "YWJvdXQgaXMgaGVscGluZyB0byByZW1vdmUgdGhhdCBzdGlnbWEsIHRvIHNo"
+    "b3cgZ2lybHMgdGhhdCB5b3UgY2FuIGJlIGZlbWluaW5lLCB5b3UgY2FuIGxp"
+    "a2UgdGhlIHRoaW5ncyB0aGF0IGdpcmxzIGxpa2UsIGJ1dCB5b3UgY2FuIGFs"
+    "c28gYmUgcmVhbGx5IGdvb2QgYXQgdGVjaG5vbG9neS4gWW91IGNhbiBiZSBy"
+    "ZWFsbHkgZ29vZCBhdCBidWlsZGluZyB0aGluZ3MuIC0gTWFyaXNzYSBNZXll"
+    "ciwgTmV3c3dlZWssIDIwMTAtMTItMjIK" },
+
+  { "Typical first year for a new cluster: "
+    "~0.5 overheating "
+    "~1 PDU failure "
+    "~1 rack-move "
+    "~1 network rewiring "
+    "~20 rack failures "
+    "~5 racks go wonky "
+    "~8 network maintenances "
+    "~12 router reloads "
+    "~3 router failures "
+    "~dozens of minor 30-second blips for dns "
+    "~1000 individual machine failures "
+    "~thousands of hard drive failures "
+    "slow disks, bad memory, misconfigured machines, flaky machines, etc."
+    " - Jeff Dean, The Joys of Real Hardware" "\n",
+
+    "VHlwaWNhbCBmaXJzdCB5ZWFyIGZvciBhIG5ldyBjbHVzdGVyOiB-MC41IG92"
+    "ZXJoZWF0aW5nIH4xIFBEVSBmYWlsdXJlIH4xIHJhY2stbW92ZSB-MSBuZXR3"
+    "b3JrIHJld2lyaW5nIH4yMCByYWNrIGZhaWx1cmVzIH41IHJhY2tzIGdvIHdv"
+    "bmt5IH44IG5ldHdvcmsgbWFpbnRlbmFuY2VzIH4xMiByb3V0ZXIgcmVsb2Fk"
+    "cyB-MyByb3V0ZXIgZmFpbHVyZXMgfmRvemVucyBvZiBtaW5vciAzMC1zZWNv"
+    "bmQgYmxpcHMgZm9yIGRucyB-MTAwMCBpbmRpdmlkdWFsIG1hY2hpbmUgZmFp"
+    "bHVyZXMgfnRob3VzYW5kcyBvZiBoYXJkIGRyaXZlIGZhaWx1cmVzIHNsb3cg"
+    "ZGlza3MsIGJhZCBtZW1vcnksIG1pc2NvbmZpZ3VyZWQgbWFjaGluZXMsIGZs"
+    "YWt5IG1hY2hpbmVzLCBldGMuIC0gSmVmZiBEZWFuLCBUaGUgSm95cyBvZiBS"
+    "ZWFsIEhhcmR3YXJlCg" },
+
+  { "I'm the head of the webspam team at Google.  "
+    "That means that if you type your name into Google and get porn back, "
+    "it's my fault. Unless you're a porn star, in which case porn is a "
+    "completely reasonable response."
+    " - Matt Cutts, Google Plus" "\n",
+
+    "SSdtIHRoZSBoZWFkIG9mIHRoZSB3ZWJzcGFtIHRlYW0gYXQgR29vZ2xlLiAg"
+    "VGhhdCBtZWFucyB0aGF0IGlmIHlvdSB0eXBlIHlvdXIgbmFtZSBpbnRvIEdv"
+    "b2dsZSBhbmQgZ2V0IHBvcm4gYmFjaywgaXQncyBteSBmYXVsdC4gVW5sZXNz"
+    "IHlvdSdyZSBhIHBvcm4gc3RhciwgaW4gd2hpY2ggY2FzZSBwb3JuIGlzIGEg"
+    "Y29tcGxldGVseSByZWFzb25hYmxlIHJlc3BvbnNlLiAtIE1hdHQgQ3V0dHMs"
+    "IEdvb2dsZSBQbHVzCg" },
+
+  { "It will still be a long time before machines approach human intelligence. "
+    "But luckily, machines don't actually have to be intelligent; "
+    "they just have to fake it. Access to a wealth of information, "
+    "combined with a rudimentary decision-making capacity, "
+    "can often be almost as useful. Of course, the results are better yet "
+    "when coupled with intelligence. A reference librarian with access to "
+    "a good search engine is a formidable tool."
+    " - Craig Silverstein, Siemens Pictures of the Future, Spring 2004" "\n",
+
+    "SXQgd2lsbCBzdGlsbCBiZSBhIGxvbmcgdGltZSBiZWZvcmUgbWFjaGluZXMg"
+    "YXBwcm9hY2ggaHVtYW4gaW50ZWxsaWdlbmNlLiBCdXQgbHVja2lseSwgbWFj"
+    "aGluZXMgZG9uJ3QgYWN0dWFsbHkgaGF2ZSB0byBiZSBpbnRlbGxpZ2VudDsg"
+    "dGhleSBqdXN0IGhhdmUgdG8gZmFrZSBpdC4gQWNjZXNzIHRvIGEgd2VhbHRo"
+    "IG9mIGluZm9ybWF0aW9uLCBjb21iaW5lZCB3aXRoIGEgcnVkaW1lbnRhcnkg"
+    "ZGVjaXNpb24tbWFraW5nIGNhcGFjaXR5LCBjYW4gb2Z0ZW4gYmUgYWxtb3N0"
+    "IGFzIHVzZWZ1bC4gT2YgY291cnNlLCB0aGUgcmVzdWx0cyBhcmUgYmV0dGVy"
+    "IHlldCB3aGVuIGNvdXBsZWQgd2l0aCBpbnRlbGxpZ2VuY2UuIEEgcmVmZXJl"
+    "bmNlIGxpYnJhcmlhbiB3aXRoIGFjY2VzcyB0byBhIGdvb2Qgc2VhcmNoIGVu"
+    "Z2luZSBpcyBhIGZvcm1pZGFibGUgdG9vbC4gLSBDcmFpZyBTaWx2ZXJzdGVp"
+    "biwgU2llbWVucyBQaWN0dXJlcyBvZiB0aGUgRnV0dXJlLCBTcHJpbmcgMjAw"
+    "NAo" },
+
+  // Degenerate edge case
+  { "",
+    "" },
+};
+
+}  // namespace

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/memutil.cc
----------------------------------------------------------------------
diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/memutil.cc b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/memutil.cc
new file mode 100644
index 0000000..a0de70d
--- /dev/null
+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/memutil.cc
@@ -0,0 +1,110 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/memutil.h"
+
+#include <cstdlib>
+
+namespace absl {
+namespace strings_internal {
+
+int memcasecmp(const char* s1, const char* s2, size_t len) {
+  const unsigned char* us1 = reinterpret_cast<const unsigned char*>(s1);
+  const unsigned char* us2 = reinterpret_cast<const unsigned char*>(s2);
+
+  for (size_t i = 0; i < len; i++) {
+    const int diff =
+        int{static_cast<unsigned char>(absl::ascii_tolower(us1[i]))} -
+        int{static_cast<unsigned char>(absl::ascii_tolower(us2[i]))};
+    if (diff != 0) return diff;
+  }
+  return 0;
+}
+
+char* memdup(const char* s, size_t slen) {
+  void* copy;
+  if ((copy = malloc(slen)) == nullptr) return nullptr;
+  memcpy(copy, s, slen);
+  return reinterpret_cast<char*>(copy);
+}
+
+char* memrchr(const char* s, int c, size_t slen) {
+  for (const char* e = s + slen - 1; e >= s; e--) {
+    if (*e == c) return const_cast<char*>(e);
+  }
+  return nullptr;
+}
+
+size_t memspn(const char* s, size_t slen, const char* accept) {
+  const char* p = s;
+  const char* spanp;
+  char c, sc;
+
+cont:
+  c = *p++;
+  if (slen-- == 0) return p - 1 - s;
+  for (spanp = accept; (sc = *spanp++) != '\0';)
+    if (sc == c) goto cont;
+  return p - 1 - s;
+}
+
+size_t memcspn(const char* s, size_t slen, const char* reject) {
+  const char* p = s;
+  const char* spanp;
+  char c, sc;
+
+  while (slen-- != 0) {
+    c = *p++;
+    for (spanp = reject; (sc = *spanp++) != '\0';)
+      if (sc == c) return p - 1 - s;
+  }
+  return p - s;
+}
+
+char* mempbrk(const char* s, size_t slen, const char* accept) {
+  const char* scanp;
+  int sc;
+
+  for (; slen; ++s, --slen) {
+    for (scanp = accept; (sc = *scanp++) != '\0';)
+      if (sc == *s) return const_cast<char*>(s);
+  }
+  return nullptr;
+}
+
+// This is significantly faster for case-sensitive matches with very
+// few possible matches.  See unit test for benchmarks.
+const char* memmatch(const char* phaystack, size_t haylen, const char* pneedle,
+                     size_t neelen) {
+  if (0 == neelen) {
+    return phaystack;  // even if haylen is 0
+  }
+  if (haylen < neelen) return nullptr;
+
+  const char* match;
+  const char* hayend = phaystack + haylen - neelen + 1;
+  // A static cast is used here to work around the fact that memchr returns
+  // a void* on Posix-compliant systems and const void* on Windows.
+  while ((match = static_cast<const char*>(
+              memchr(phaystack, pneedle[0], hayend - phaystack)))) {
+    if (memcmp(match, pneedle, neelen) == 0)
+      return match;
+    else
+      phaystack = match + 1;
+  }
+  return nullptr;
+}
+
+}  // namespace strings_internal
+}  // namespace absl

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/memutil.h
----------------------------------------------------------------------
diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/memutil.h b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/memutil.h
new file mode 100644
index 0000000..a6f1c69
--- /dev/null
+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/memutil.h
@@ -0,0 +1,146 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// These routines provide mem versions of standard C std::string routines,
+// such as strpbrk.  They function exactly the same as the str versions,
+// so if you wonder what they are, replace the word "mem" by
+// "str" and check out the man page.  I could return void*, as the
+// strutil.h mem*() routines tend to do, but I return char* instead
+// since this is by far the most common way these functions are called.
+//
+// The difference between the mem and str versions is the mem version
+// takes a pointer and a length, rather than a '\0'-terminated std::string.
+// The memcase* routines defined here assume the locale is "C"
+// (they use absl::ascii_tolower instead of tolower).
+//
+// These routines are based on the BSD library.
+//
+// Here's a list of routines from std::string.h, and their mem analogues.
+// Functions in lowercase are defined in std::string.h; those in UPPERCASE
+// are defined here:
+//
+// strlen                  --
+// strcat strncat          MEMCAT
+// strcpy strncpy          memcpy
+// --                      memccpy   (very cool function, btw)
+// --                      memmove
+// --                      memset
+// strcmp strncmp          memcmp
+// strcasecmp strncasecmp  MEMCASECMP
+// strchr                  memchr
+// strcoll                 --
+// strxfrm                 --
+// strdup strndup          MEMDUP
+// strrchr                 MEMRCHR
+// strspn                  MEMSPN
+// strcspn                 MEMCSPN
+// strpbrk                 MEMPBRK
+// strstr                  MEMSTR MEMMEM
+// (g)strcasestr           MEMCASESTR MEMCASEMEM
+// strtok                  --
+// strprefix               MEMPREFIX      (strprefix is from strutil.h)
+// strcaseprefix           MEMCASEPREFIX  (strcaseprefix is from strutil.h)
+// strsuffix               MEMSUFFIX      (strsuffix is from strutil.h)
+// strcasesuffix           MEMCASESUFFIX  (strcasesuffix is from strutil.h)
+// --                      MEMIS
+// --                      MEMCASEIS
+// strcount                MEMCOUNT       (strcount is from strutil.h)
+
+#ifndef ABSL_STRINGS_INTERNAL_MEMUTIL_H_
+#define ABSL_STRINGS_INTERNAL_MEMUTIL_H_
+
+#include <cstddef>
+#include <cstring>
+
+#include "absl/base/port.h"  // disable some warnings on Windows
+#include "absl/strings/ascii.h"  // for absl::ascii_tolower
+
+namespace absl {
+namespace strings_internal {
+
+inline char* memcat(char* dest, size_t destlen, const char* src,
+                    size_t srclen) {
+  return reinterpret_cast<char*>(memcpy(dest + destlen, src, srclen));
+}
+
+int memcasecmp(const char* s1, const char* s2, size_t len);
+char* memdup(const char* s, size_t slen);
+char* memrchr(const char* s, int c, size_t slen);
+size_t memspn(const char* s, size_t slen, const char* accept);
+size_t memcspn(const char* s, size_t slen, const char* reject);
+char* mempbrk(const char* s, size_t slen, const char* accept);
+
+// This is for internal use only.  Don't call this directly
+template <bool case_sensitive>
+const char* int_memmatch(const char* haystack, size_t haylen,
+                         const char* needle, size_t neelen) {
+  if (0 == neelen) {
+    return haystack;  // even if haylen is 0
+  }
+  const char* hayend = haystack + haylen;
+  const char* needlestart = needle;
+  const char* needleend = needlestart + neelen;
+
+  for (; haystack < hayend; ++haystack) {
+    char hay = case_sensitive
+                   ? *haystack
+                   : absl::ascii_tolower(static_cast<unsigned char>(*haystack));
+    char nee = case_sensitive
+                   ? *needle
+                   : absl::ascii_tolower(static_cast<unsigned char>(*needle));
+    if (hay == nee) {
+      if (++needle == needleend) {
+        return haystack + 1 - neelen;
+      }
+    } else if (needle != needlestart) {
+      // must back up haystack in case a prefix matched (find "aab" in "aaab")
+      haystack -= needle - needlestart;  // for loop will advance one more
+      needle = needlestart;
+    }
+  }
+  return nullptr;
+}
+
+// These are the guys you can call directly
+inline const char* memstr(const char* phaystack, size_t haylen,
+                          const char* pneedle) {
+  return int_memmatch<true>(phaystack, haylen, pneedle, strlen(pneedle));
+}
+
+inline const char* memcasestr(const char* phaystack, size_t haylen,
+                              const char* pneedle) {
+  return int_memmatch<false>(phaystack, haylen, pneedle, strlen(pneedle));
+}
+
+inline const char* memmem(const char* phaystack, size_t haylen,
+                          const char* pneedle, size_t needlelen) {
+  return int_memmatch<true>(phaystack, haylen, pneedle, needlelen);
+}
+
+inline const char* memcasemem(const char* phaystack, size_t haylen,
+                              const char* pneedle, size_t needlelen) {
+  return int_memmatch<false>(phaystack, haylen, pneedle, needlelen);
+}
+
+// This is significantly faster for case-sensitive matches with very
+// few possible matches.  See unit test for benchmarks.
+const char* memmatch(const char* phaystack, size_t haylen, const char* pneedle,
+                     size_t neelen);
+
+}  // namespace strings_internal
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_MEMUTIL_H_

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/memutil_test.cc
----------------------------------------------------------------------
diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/memutil_test.cc b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/memutil_test.cc
new file mode 100644
index 0000000..09424de
--- /dev/null
+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/memutil_test.cc
@@ -0,0 +1,179 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Unit test for memutil.cc
+
+#include "absl/strings/internal/memutil.h"
+
+#include <cstdlib>
+
+#include "gtest/gtest.h"
+#include "absl/strings/ascii.h"
+
+namespace {
+
+static char* memcasechr(const char* s, int c, size_t slen) {
+  c = absl::ascii_tolower(c);
+  for (; slen; ++s, --slen) {
+    if (absl::ascii_tolower(*s) == c) return const_cast<char*>(s);
+  }
+  return nullptr;
+}
+
+static const char* memcasematch(const char* phaystack, size_t haylen,
+                                const char* pneedle, size_t neelen) {
+  if (0 == neelen) {
+    return phaystack;  // even if haylen is 0
+  }
+  if (haylen < neelen) return nullptr;
+
+  const char* match;
+  const char* hayend = phaystack + haylen - neelen + 1;
+  while ((match = static_cast<char*>(
+              memcasechr(phaystack, pneedle[0], hayend - phaystack)))) {
+    if (absl::strings_internal::memcasecmp(match, pneedle, neelen) == 0)
+      return match;
+    else
+      phaystack = match + 1;
+  }
+  return nullptr;
+}
+
+TEST(MemUtilTest, AllTests) {
+  // check memutil functions
+  char a[1000];
+  absl::strings_internal::memcat(a, 0, "hello", sizeof("hello") - 1);
+  absl::strings_internal::memcat(a, 5, " there", sizeof(" there") - 1);
+
+  EXPECT_EQ(absl::strings_internal::memcasecmp(a, "heLLO there",
+                                               sizeof("hello there") - 1),
+            0);
+  EXPECT_EQ(absl::strings_internal::memcasecmp(a, "heLLO therf",
+                                               sizeof("hello there") - 1),
+            -1);
+  EXPECT_EQ(absl::strings_internal::memcasecmp(a, "heLLO therf",
+                                               sizeof("hello there") - 2),
+            0);
+  EXPECT_EQ(absl::strings_internal::memcasecmp(a, "whatever", 0), 0);
+
+  char* p = absl::strings_internal::memdup("hello", 5);
+  free(p);
+
+  p = absl::strings_internal::memrchr("hello there", 'e',
+                                      sizeof("hello there") - 1);
+  EXPECT_TRUE(p && p[-1] == 'r');
+  p = absl::strings_internal::memrchr("hello there", 'e',
+                                      sizeof("hello there") - 2);
+  EXPECT_TRUE(p && p[-1] == 'h');
+  p = absl::strings_internal::memrchr("hello there", 'u',
+                                      sizeof("hello there") - 1);
+  EXPECT_TRUE(p == nullptr);
+
+  int len = absl::strings_internal::memspn("hello there",
+                                           sizeof("hello there") - 1, "hole");
+  EXPECT_EQ(len, sizeof("hello") - 1);
+  len = absl::strings_internal::memspn("hello there", sizeof("hello there") - 1,
+                                       "u");
+  EXPECT_EQ(len, 0);
+  len = absl::strings_internal::memspn("hello there", sizeof("hello there") - 1,
+                                       "");
+  EXPECT_EQ(len, 0);
+  len = absl::strings_internal::memspn("hello there", sizeof("hello there") - 1,
+                                       "trole h");
+  EXPECT_EQ(len, sizeof("hello there") - 1);
+  len = absl::strings_internal::memspn("hello there!",
+                                       sizeof("hello there!") - 1, "trole h");
+  EXPECT_EQ(len, sizeof("hello there") - 1);
+  len = absl::strings_internal::memspn("hello there!",
+                                       sizeof("hello there!") - 2, "trole h!");
+  EXPECT_EQ(len, sizeof("hello there!") - 2);
+
+  len = absl::strings_internal::memcspn("hello there",
+                                        sizeof("hello there") - 1, "leho");
+  EXPECT_EQ(len, 0);
+  len = absl::strings_internal::memcspn("hello there",
+                                        sizeof("hello there") - 1, "u");
+  EXPECT_EQ(len, sizeof("hello there") - 1);
+  len = absl::strings_internal::memcspn("hello there",
+                                        sizeof("hello there") - 1, "");
+  EXPECT_EQ(len, sizeof("hello there") - 1);
+  len = absl::strings_internal::memcspn("hello there",
+                                        sizeof("hello there") - 1, " ");
+  EXPECT_EQ(len, 5);
+
+  p = absl::strings_internal::mempbrk("hello there", sizeof("hello there") - 1,
+                                      "leho");
+  EXPECT_TRUE(p && p[1] == 'e' && p[2] == 'l');
+  p = absl::strings_internal::mempbrk("hello there", sizeof("hello there") - 1,
+                                      "nu");
+  EXPECT_TRUE(p == nullptr);
+  p = absl::strings_internal::mempbrk("hello there!",
+                                      sizeof("hello there!") - 2, "!");
+  EXPECT_TRUE(p == nullptr);
+  p = absl::strings_internal::mempbrk("hello there", sizeof("hello there") - 1,
+                                      " t ");
+  EXPECT_TRUE(p && p[-1] == 'o' && p[1] == 't');
+
+  {
+    const char kHaystack[] = "0123456789";
+    EXPECT_EQ(absl::strings_internal::memmem(kHaystack, 0, "", 0), kHaystack);
+    EXPECT_EQ(absl::strings_internal::memmem(kHaystack, 10, "012", 3),
+              kHaystack);
+    EXPECT_EQ(absl::strings_internal::memmem(kHaystack, 10, "0xx", 1),
+              kHaystack);
+    EXPECT_EQ(absl::strings_internal::memmem(kHaystack, 10, "789", 3),
+              kHaystack + 7);
+    EXPECT_EQ(absl::strings_internal::memmem(kHaystack, 10, "9xx", 1),
+              kHaystack + 9);
+    EXPECT_TRUE(absl::strings_internal::memmem(kHaystack, 10, "9xx", 3) ==
+                nullptr);
+    EXPECT_TRUE(absl::strings_internal::memmem(kHaystack, 10, "xxx", 1) ==
+                nullptr);
+  }
+  {
+    const char kHaystack[] = "aBcDeFgHiJ";
+    EXPECT_EQ(absl::strings_internal::memcasemem(kHaystack, 0, "", 0),
+              kHaystack);
+    EXPECT_EQ(absl::strings_internal::memcasemem(kHaystack, 10, "Abc", 3),
+              kHaystack);
+    EXPECT_EQ(absl::strings_internal::memcasemem(kHaystack, 10, "Axx", 1),
+              kHaystack);
+    EXPECT_EQ(absl::strings_internal::memcasemem(kHaystack, 10, "hIj", 3),
+              kHaystack + 7);
+    EXPECT_EQ(absl::strings_internal::memcasemem(kHaystack, 10, "jxx", 1),
+              kHaystack + 9);
+    EXPECT_TRUE(absl::strings_internal::memcasemem(kHaystack, 10, "jxx", 3) ==
+                nullptr);
+    EXPECT_TRUE(absl::strings_internal::memcasemem(kHaystack, 10, "xxx", 1) ==
+                nullptr);
+  }
+  {
+    const char kHaystack[] = "0123456789";
+    EXPECT_EQ(absl::strings_internal::memmatch(kHaystack, 0, "", 0), kHaystack);
+    EXPECT_EQ(absl::strings_internal::memmatch(kHaystack, 10, "012", 3),
+              kHaystack);
+    EXPECT_EQ(absl::strings_internal::memmatch(kHaystack, 10, "0xx", 1),
+              kHaystack);
+    EXPECT_EQ(absl::strings_internal::memmatch(kHaystack, 10, "789", 3),
+              kHaystack + 7);
+    EXPECT_EQ(absl::strings_internal::memmatch(kHaystack, 10, "9xx", 1),
+              kHaystack + 9);
+    EXPECT_TRUE(absl::strings_internal::memmatch(kHaystack, 10, "9xx", 3) ==
+                nullptr);
+    EXPECT_TRUE(absl::strings_internal::memmatch(kHaystack, 10, "xxx", 1) ==
+                nullptr);
+  }
+}
+
+}  // namespace

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/numbers_test_common.inc
----------------------------------------------------------------------
diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/numbers_test_common.inc b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/numbers_test_common.inc
new file mode 100644
index 0000000..81d2a1b
--- /dev/null
+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/numbers_test_common.inc
@@ -0,0 +1,156 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file contains common things needed by numbers_test.cc,
+// numbers_legacy_test.cc and numbers_benchmark.cc.
+
+namespace {
+
+template <typename IntType>
+bool Itoa(IntType value, int base, std::string* destination) {
+  destination->clear();
+  if (base <= 1 || base > 36) {
+    return false;
+  }
+
+  if (value == 0) {
+    destination->push_back('0');
+    return true;
+  }
+
+  bool negative = value < 0;
+  while (value != 0) {
+    const IntType next_value = value / base;
+    // Can't use std::abs here because of problems when IntType is unsigned.
+    int remainder = value > next_value * base ? value - next_value * base
+                                              : next_value * base - value;
+    char c = remainder < 10 ? '0' + remainder : 'A' + remainder - 10;
+    destination->insert(0, 1, c);
+    value = next_value;
+  }
+
+  if (negative) {
+    destination->insert(0, 1, '-');
+  }
+  return true;
+}
+
+struct uint32_test_case {
+  const char* str;
+  bool expect_ok;
+  int base;  // base to pass to the conversion function
+  uint32_t expected;
+} const strtouint32_test_cases[] = {
+    {"0xffffffff", true, 16, std::numeric_limits<uint32_t>::max()},
+    {"0x34234324", true, 16, 0x34234324},
+    {"34234324", true, 16, 0x34234324},
+    {"0", true, 16, 0},
+    {" \t\n 0xffffffff", true, 16, std::numeric_limits<uint32_t>::max()},
+    {" \f\v 46", true, 10, 46},  // must accept weird whitespace
+    {" \t\n 72717222", true, 8, 072717222},
+    {" \t\n 072717222", true, 8, 072717222},
+    {" \t\n 072717228", false, 8, 07271722},
+    {"0", true, 0, 0},
+
+    // Base-10 version.
+    {"34234324", true, 0, 34234324},
+    {"4294967295", true, 0, std::numeric_limits<uint32_t>::max()},
+    {"34234324 \n\t", true, 10, 34234324},
+
+    // Unusual base
+    {"0", true, 3, 0},
+    {"2", true, 3, 2},
+    {"11", true, 3, 4},
+
+    // Invalid uints.
+    {"", false, 0, 0},
+    {"  ", false, 0, 0},
+    {"abc", false, 0, 0},  // would be valid hex, but prefix is missing
+    {"34234324a", false, 0, 34234324},
+    {"34234.3", false, 0, 34234},
+    {"-1", false, 0, 0},
+    {"   -123", false, 0, 0},
+    {" \t\n -123", false, 0, 0},
+
+    // Out of bounds.
+    {"4294967296", false, 0, std::numeric_limits<uint32_t>::max()},
+    {"0x100000000", false, 0, std::numeric_limits<uint32_t>::max()},
+    {nullptr, false, 0, 0},
+};
+
+struct uint64_test_case {
+  const char* str;
+  bool expect_ok;
+  int base;
+  uint64_t expected;
+} const strtouint64_test_cases[] = {
+    {"0x3423432448783446", true, 16, int64_t{0x3423432448783446}},
+    {"3423432448783446", true, 16, int64_t{0x3423432448783446}},
+
+    {"0", true, 16, 0},
+    {"000", true, 0, 0},
+    {"0", true, 0, 0},
+    {" \t\n 0xffffffffffffffff", true, 16,
+     std::numeric_limits<uint64_t>::max()},
+
+    {"012345670123456701234", true, 8, int64_t{012345670123456701234}},
+    {"12345670123456701234", true, 8, int64_t{012345670123456701234}},
+
+    {"12845670123456701234", false, 8, 0},
+
+    // Base-10 version.
+    {"34234324487834466", true, 0, int64_t{34234324487834466}},
+
+    {" \t\n 18446744073709551615", true, 0,
+     std::numeric_limits<uint64_t>::max()},
+
+    {"34234324487834466 \n\t ", true, 0, int64_t{34234324487834466}},
+
+    {" \f\v 46", true, 10, 46},  // must accept weird whitespace
+
+    // Unusual base
+    {"0", true, 3, 0},
+    {"2", true, 3, 2},
+    {"11", true, 3, 4},
+
+    {"0", true, 0, 0},
+
+    // Invalid uints.
+    {"", false, 0, 0},
+    {"  ", false, 0, 0},
+    {"abc", false, 0, 0},
+    {"34234324487834466a", false, 0, 0},
+    {"34234487834466.3", false, 0, 0},
+    {"-1", false, 0, 0},
+    {"   -123", false, 0, 0},
+    {" \t\n -123", false, 0, 0},
+
+    // Out of bounds.
+    {"18446744073709551616", false, 10, 0},
+    {"18446744073709551616", false, 0, 0},
+    {"0x10000000000000000", false, 16, std::numeric_limits<uint64_t>::max()},
+    {"0X10000000000000000", false, 16,
+     std::numeric_limits<uint64_t>::max()},  // 0X versus 0x.
+    {"0x10000000000000000", false, 0, std::numeric_limits<uint64_t>::max()},
+    {"0X10000000000000000", false, 0,
+     std::numeric_limits<uint64_t>::max()},  // 0X versus 0x.
+
+    {"0x1234", true, 16, 0x1234},
+
+    // Base-10 std::string version.
+    {"1234", true, 0, 1234},
+    {nullptr, false, 0, 0},
+};
+
+}  // namespace

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/ostringstream.cc
----------------------------------------------------------------------
diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/ostringstream.cc b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/ostringstream.cc
new file mode 100644
index 0000000..6ee2b10
--- /dev/null
+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/ostringstream.cc
@@ -0,0 +1,34 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/ostringstream.h"
+
+namespace absl {
+namespace strings_internal {
+
+OStringStream::Buf::int_type OStringStream::overflow(int c) {
+  assert(s_);
+  if (!Buf::traits_type::eq_int_type(c, Buf::traits_type::eof()))
+    s_->push_back(static_cast<char>(c));
+  return 1;
+}
+
+std::streamsize OStringStream::xsputn(const char* s, std::streamsize n) {
+  assert(s_);
+  s_->append(s, n);
+  return n;
+}
+
+}  // namespace strings_internal
+}  // namespace absl

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/ostringstream.h
----------------------------------------------------------------------
diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/ostringstream.h b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/ostringstream.h
new file mode 100644
index 0000000..6e1325b
--- /dev/null
+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/ostringstream.h
@@ -0,0 +1,87 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_STRINGS_INTERNAL_OSTRINGSTREAM_H_
+#define ABSL_STRINGS_INTERNAL_OSTRINGSTREAM_H_
+
+#include <cassert>
+#include <ostream>
+#include <streambuf>
+#include <string>
+
+#include "absl/base/port.h"
+
+namespace absl {
+namespace strings_internal {
+
+// The same as std::ostringstream but appends to a user-specified std::string,
+// and is faster. It is ~70% faster to create, ~50% faster to write to, and
+// completely free to extract the result std::string.
+//
+//   std::string s;
+//   OStringStream strm(&s);
+//   strm << 42 << ' ' << 3.14;  // appends to `s`
+//
+// The stream object doesn't have to be named. Starting from C++11 operator<<
+// works with rvalues of std::ostream.
+//
+//   std::string s;
+//   OStringStream(&s) << 42 << ' ' << 3.14;  // appends to `s`
+//
+// OStringStream is faster to create than std::ostringstream but it's still
+// relatively slow. Avoid creating multiple streams where a single stream will
+// do.
+//
+// Creates unnecessary instances of OStringStream: slow.
+//
+//   std::string s;
+//   OStringStream(&s) << 42;
+//   OStringStream(&s) << ' ';
+//   OStringStream(&s) << 3.14;
+//
+// Creates a single instance of OStringStream and reuses it: fast.
+//
+//   std::string s;
+//   OStringStream strm(&s);
+//   strm << 42;
+//   strm << ' ';
+//   strm << 3.14;
+//
+// Note: flush() has no effect. No reason to call it.
+class OStringStream : private std::basic_streambuf<char>, public std::ostream {
+ public:
+  // The argument can be null, in which case you'll need to call str(p) with a
+  // non-null argument before you can write to the stream.
+  //
+  // The destructor of OStringStream doesn't use the std::string. It's OK to destroy
+  // the std::string before the stream.
+  explicit OStringStream(std::string* s) : std::ostream(this), s_(s) {}
+
+  std::string* str() { return s_; }
+  const std::string* str() const { return s_; }
+  void str(std::string* s) { s_ = s; }
+
+ private:
+  using Buf = std::basic_streambuf<char>;
+
+  Buf::int_type overflow(int c) override;
+  std::streamsize xsputn(const char* s, std::streamsize n) override;
+
+  std::string* s_;
+};
+
+}  // namespace strings_internal
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_OSTRINGSTREAM_H_

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/ostringstream_test.cc
----------------------------------------------------------------------
diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/ostringstream_test.cc b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/ostringstream_test.cc
new file mode 100644
index 0000000..069a0e1
--- /dev/null
+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/ostringstream_test.cc
@@ -0,0 +1,102 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/ostringstream.h"
+
+#include <memory>
+#include <ostream>
+#include <string>
+#include <type_traits>
+
+#include "gtest/gtest.h"
+
+namespace {
+
+TEST(OStringStream, IsOStream) {
+  static_assert(
+      std::is_base_of<std::ostream, absl::strings_internal::OStringStream>(),
+      "");
+}
+
+TEST(OStringStream, ConstructDestroy) {
+  {
+    absl::strings_internal::OStringStream strm(nullptr);
+    EXPECT_EQ(nullptr, strm.str());
+  }
+  {
+    std::string s = "abc";
+    {
+      absl::strings_internal::OStringStream strm(&s);
+      EXPECT_EQ(&s, strm.str());
+    }
+    EXPECT_EQ("abc", s);
+  }
+  {
+    std::unique_ptr<std::string> s(new std::string);
+    absl::strings_internal::OStringStream strm(s.get());
+    s.reset();
+  }
+}
+
+TEST(OStringStream, Str) {
+  std::string s1;
+  absl::strings_internal::OStringStream strm(&s1);
+  const absl::strings_internal::OStringStream& c_strm(strm);
+
+  static_assert(std::is_same<decltype(strm.str()), std::string*>(), "");
+  static_assert(std::is_same<decltype(c_strm.str()), const std::string*>(), "");
+
+  EXPECT_EQ(&s1, strm.str());
+  EXPECT_EQ(&s1, c_strm.str());
+
+  strm.str(&s1);
+  EXPECT_EQ(&s1, strm.str());
+  EXPECT_EQ(&s1, c_strm.str());
+
+  std::string s2;
+  strm.str(&s2);
+  EXPECT_EQ(&s2, strm.str());
+  EXPECT_EQ(&s2, c_strm.str());
+
+  strm.str(nullptr);
+  EXPECT_EQ(nullptr, strm.str());
+  EXPECT_EQ(nullptr, c_strm.str());
+}
+
+TEST(OStreamStream, WriteToLValue) {
+  std::string s = "abc";
+  {
+    absl::strings_internal::OStringStream strm(&s);
+    EXPECT_EQ("abc", s);
+    strm << "";
+    EXPECT_EQ("abc", s);
+    strm << 42;
+    EXPECT_EQ("abc42", s);
+    strm << 'x' << 'y';
+    EXPECT_EQ("abc42xy", s);
+  }
+  EXPECT_EQ("abc42xy", s);
+}
+
+TEST(OStreamStream, WriteToRValue) {
+  std::string s = "abc";
+  absl::strings_internal::OStringStream(&s) << "";
+  EXPECT_EQ("abc", s);
+  absl::strings_internal::OStringStream(&s) << 42;
+  EXPECT_EQ("abc42", s);
+  absl::strings_internal::OStringStream(&s) << 'x' << 'y';
+  EXPECT_EQ("abc42xy", s);
+}
+
+}  // namespace

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/resize_uninitialized.h
----------------------------------------------------------------------
diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/resize_uninitialized.h b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/resize_uninitialized.h
new file mode 100644
index 0000000..0157ca0
--- /dev/null
+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/resize_uninitialized.h
@@ -0,0 +1,69 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_STRINGS_INTERNAL_RESIZE_UNINITIALIZED_H_
+#define ABSL_STRINGS_INTERNAL_RESIZE_UNINITIALIZED_H_
+
+#include <string>
+#include <utility>
+
+#include "absl/base/port.h"
+#include "absl/meta/type_traits.h"  //  for void_t
+
+namespace absl {
+namespace strings_internal {
+
+// Is a subclass of true_type or false_type, depending on whether or not
+// T has a resize_uninitialized member.
+template <typename T, typename = void>
+struct HasResizeUninitialized : std::false_type {};
+template <typename T>
+struct HasResizeUninitialized<
+    T, absl::void_t<decltype(std::declval<T>().resize_uninitialized(237))>>
+    : std::true_type {};
+
+template <typename string_type>
+void ResizeUninit(string_type* s, size_t new_size, std::true_type) {
+  s->resize_uninitialized(new_size);
+}
+template <typename string_type>
+void ResizeUninit(string_type* s, size_t new_size, std::false_type) {
+  s->resize(new_size);
+}
+
+// Returns true if the std::string implementation supports a resize where
+// the new characters added to the std::string are left untouched.
+//
+// (A better name might be "STLStringSupportsUninitializedResize", alluding to
+// the previous function.)
+template <typename string_type>
+inline constexpr bool STLStringSupportsNontrashingResize(string_type*) {
+  return HasResizeUninitialized<string_type>();
+}
+
+// Like str->resize(new_size), except any new characters added to "*str" as a
+// result of resizing may be left uninitialized, rather than being filled with
+// '0' bytes. Typically used when code is then going to overwrite the backing
+// store of the std::string with known data. Uses a Google extension to std::string.
+template <typename string_type, typename = void>
+inline void STLStringResizeUninitialized(string_type* s, size_t new_size) {
+  ResizeUninit(s, new_size, HasResizeUninitialized<string_type>());
+}
+
+}  // namespace strings_internal
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_RESIZE_UNINITIALIZED_H_

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/resize_uninitialized_test.cc
----------------------------------------------------------------------
diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/resize_uninitialized_test.cc b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/resize_uninitialized_test.cc
new file mode 100644
index 0000000..ad282ef
--- /dev/null
+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/resize_uninitialized_test.cc
@@ -0,0 +1,68 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/resize_uninitialized.h"
+
+#include "gtest/gtest.h"
+
+namespace {
+
+int resize_call_count = 0;
+
+struct resizable_string {
+  void resize(size_t) { resize_call_count += 1; }
+};
+
+int resize_uninitialized_call_count = 0;
+
+struct resize_uninitializable_string {
+  void resize(size_t) { resize_call_count += 1; }
+  void resize_uninitialized(size_t) { resize_uninitialized_call_count += 1; }
+};
+
+TEST(ResizeUninit, WithAndWithout) {
+  resize_call_count = 0;
+  resize_uninitialized_call_count = 0;
+  {
+    resizable_string rs;
+
+    EXPECT_EQ(resize_call_count, 0);
+    EXPECT_EQ(resize_uninitialized_call_count, 0);
+    EXPECT_FALSE(
+        absl::strings_internal::STLStringSupportsNontrashingResize(&rs));
+    EXPECT_EQ(resize_call_count, 0);
+    EXPECT_EQ(resize_uninitialized_call_count, 0);
+    absl::strings_internal::STLStringResizeUninitialized(&rs, 237);
+    EXPECT_EQ(resize_call_count, 1);
+    EXPECT_EQ(resize_uninitialized_call_count, 0);
+  }
+
+  resize_call_count = 0;
+  resize_uninitialized_call_count = 0;
+  {
+    resize_uninitializable_string rus;
+
+    EXPECT_EQ(resize_call_count, 0);
+    EXPECT_EQ(resize_uninitialized_call_count, 0);
+    EXPECT_TRUE(
+        absl::strings_internal::STLStringSupportsNontrashingResize(&rus));
+    EXPECT_EQ(resize_call_count, 0);
+    EXPECT_EQ(resize_uninitialized_call_count, 0);
+    absl::strings_internal::STLStringResizeUninitialized(&rus, 237);
+    EXPECT_EQ(resize_call_count, 0);
+    EXPECT_EQ(resize_uninitialized_call_count, 1);
+  }
+}
+
+}  // namespace

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/stl_type_traits.h
----------------------------------------------------------------------
diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/stl_type_traits.h b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/stl_type_traits.h
new file mode 100644
index 0000000..04c4a53
--- /dev/null
+++ b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/stl_type_traits.h
@@ -0,0 +1,246 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// Thie file provides the IsStrictlyBaseOfAndConvertibleToSTLContainer type
+// trait metafunction to assist in working with the _GLIBCXX_DEBUG debug
+// wrappers of STL containers.
+//
+// DO NOT INCLUDE THIS FILE DIRECTLY. Use this file by including
+// absl/strings/str_split.h.
+//
+// IWYU pragma: private, include "absl/strings/str_split.h"
+
+#ifndef ABSL_STRINGS_INTERNAL_STL_TYPE_TRAITS_H_
+#define ABSL_STRINGS_INTERNAL_STL_TYPE_TRAITS_H_
+
+#include <array>
+#include <bitset>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <set>
+#include <type_traits>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "absl/meta/type_traits.h"
+
+namespace absl {
+namespace strings_internal {
+
+template <typename C, template <typename...> class T>
+struct IsSpecializationImpl : std::false_type {};
+template <template <typename...> class T, typename... Args>
+struct IsSpecializationImpl<T<Args...>, T> : std::true_type {};
+template <typename C, template <typename...> class T>
+using IsSpecialization = IsSpecializationImpl<absl::decay_t<C>, T>;
+
+template <typename C>
+struct IsArrayImpl : std::false_type {};
+template <template <typename, size_t> class A, typename T, size_t N>
+struct IsArrayImpl<A<T, N>> : std::is_same<A<T, N>, std::array<T, N>> {};
+template <typename C>
+using IsArray = IsArrayImpl<absl::decay_t<C>>;
+
+template <typename C>
+struct IsBitsetImpl : std::false_type {};
+template <template <size_t> class B, size_t N>
+struct IsBitsetImpl<B<N>> : std::is_same<B<N>, std::bitset<N>> {};
+template <typename C>
+using IsBitset = IsBitsetImpl<absl::decay_t<C>>;
+
+template <typename C>
+struct IsSTLContainer
+    : absl::disjunction<
+          IsArray<C>, IsBitset<C>, IsSpecialization<C, std::deque>,
+          IsSpecialization<C, std::forward_list>,
+          IsSpecialization<C, std::list>, IsSpecialization<C, std::map>,
+          IsSpecialization<C, std::multimap>, IsSpecialization<C, std::set>,
+          IsSpecialization<C, std::multiset>,
+          IsSpecialization<C, std::unordered_map>,
+          IsSpecialization<C, std::unordered_multimap>,
+          IsSpecialization<C, std::unordered_set>,
+          IsSpecialization<C, std::unordered_multiset>,
+          IsSpecialization<C, std::vector>> {};
+
+template <typename C, template <typename...> class T, typename = void>
+struct IsBaseOfSpecializationImpl : std::false_type {};
+// IsBaseOfSpecializationImpl needs multiple partial specializations to SFINAE
+// on the existence of container dependent types and plug them into the STL
+// template.
+template <typename C, template <typename, typename> class T>
+struct IsBaseOfSpecializationImpl<
+    C, T, absl::void_t<typename C::value_type, typename C::allocator_type>>
+    : std::is_base_of<C,
+                      T<typename C::value_type, typename C::allocator_type>> {};
+template <typename C, template <typename, typename, typename> class T>
+struct IsBaseOfSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::key_compare,
+                 typename C::allocator_type>>
+    : std::is_base_of<C, T<typename C::key_type, typename C::key_compare,
+                           typename C::allocator_type>> {};
+template <typename C, template <typename, typename, typename, typename> class T>
+struct IsBaseOfSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::mapped_type,
+                 typename C::key_compare, typename C::allocator_type>>
+    : std::is_base_of<C,
+                      T<typename C::key_type, typename C::mapped_type,
+                        typename C::key_compare, typename C::allocator_type>> {
+};
+template <typename C, template <typename, typename, typename, typename> class T>
+struct IsBaseOfSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::hasher,
+                 typename C::key_equal, typename C::allocator_type>>
+    : std::is_base_of<C, T<typename C::key_type, typename C::hasher,
+                           typename C::key_equal, typename C::allocator_type>> {
+};
+template <typename C,
+          template <typename, typename, typename, typename, typename> class T>
+struct IsBaseOfSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::mapped_type,
+                 typename C::hasher, typename C::key_equal,
+                 typename C::allocator_type>>
+    : std::is_base_of<C, T<typename C::key_type, typename C::mapped_type,
+                           typename C::hasher, typename C::key_equal,
+                           typename C::allocator_type>> {};
+template <typename C, template <typename...> class T>
+using IsBaseOfSpecialization = IsBaseOfSpecializationImpl<absl::decay_t<C>, T>;
+
+template <typename C>
+struct IsBaseOfArrayImpl : std::false_type {};
+template <template <typename, size_t> class A, typename T, size_t N>
+struct IsBaseOfArrayImpl<A<T, N>> : std::is_base_of<A<T, N>, std::array<T, N>> {
+};
+template <typename C>
+using IsBaseOfArray = IsBaseOfArrayImpl<absl::decay_t<C>>;
+
+template <typename C>
+struct IsBaseOfBitsetImpl : std::false_type {};
+template <template <size_t> class B, size_t N>
+struct IsBaseOfBitsetImpl<B<N>> : std::is_base_of<B<N>, std::bitset<N>> {};
+template <typename C>
+using IsBaseOfBitset = IsBaseOfBitsetImpl<absl::decay_t<C>>;
+
+template <typename C>
+struct IsBaseOfSTLContainer
+    : absl::disjunction<IsBaseOfArray<C>, IsBaseOfBitset<C>,
+                        IsBaseOfSpecialization<C, std::deque>,
+                        IsBaseOfSpecialization<C, std::forward_list>,
+                        IsBaseOfSpecialization<C, std::list>,
+                        IsBaseOfSpecialization<C, std::map>,
+                        IsBaseOfSpecialization<C, std::multimap>,
+                        IsBaseOfSpecialization<C, std::set>,
+                        IsBaseOfSpecialization<C, std::multiset>,
+                        IsBaseOfSpecialization<C, std::unordered_map>,
+                        IsBaseOfSpecialization<C, std::unordered_multimap>,
+                        IsBaseOfSpecialization<C, std::unordered_set>,
+                        IsBaseOfSpecialization<C, std::unordered_multiset>,
+                        IsBaseOfSpecialization<C, std::vector>> {};
+
+template <typename C, template <typename...> class T, typename = void>
+struct IsConvertibleToSpecializationImpl : std::false_type {};
+// IsConvertibleToSpecializationImpl needs multiple partial specializations to
+// SFINAE on the existence of container dependent types and plug them into the
+// STL template.
+template <typename C, template <typename, typename> class T>
+struct IsConvertibleToSpecializationImpl<
+    C, T, absl::void_t<typename C::value_type, typename C::allocator_type>>
+    : std::is_convertible<
+          C, T<typename C::value_type, typename C::allocator_type>> {};
+template <typename C, template <typename, typename, typename> class T>
+struct IsConvertibleToSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::key_compare,
+                 typename C::allocator_type>>
+    : std::is_convertible<C, T<typename C::key_type, typename C::key_compare,
+                               typename C::allocator_type>> {};
+template <typename C, template <typename, typename, typename, typename> class T>
+struct IsConvertibleToSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::mapped_type,
+                 typename C::key_compare, typename C::allocator_type>>
+    : std::is_convertible<
+          C, T<typename C::key_type, typename C::mapped_type,
+               typename C::key_compare, typename C::allocator_type>> {};
+template <typename C, template <typename, typename, typename, typename> class T>
+struct IsConvertibleToSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::hasher,
+                 typename C::key_equal, typename C::allocator_type>>
+    : std::is_convertible<
+          C, T<typename C::key_type, typename C::hasher, typename C::key_equal,
+               typename C::allocator_type>> {};
+template <typename C,
+          template <typename, typename, typename, typename, typename> class T>
+struct IsConvertibleToSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::mapped_type,
+                 typename C::hasher, typename C::key_equal,
+                 typename C::allocator_type>>
+    : std::is_convertible<C, T<typename C::key_type, typename C::mapped_type,
+                               typename C::hasher, typename C::key_equal,
+                               typename C::allocator_type>> {};
+template <typename C, template <typename...> class T>
+using IsConvertibleToSpecialization =
+    IsConvertibleToSpecializationImpl<absl::decay_t<C>, T>;
+
+template <typename C>
+struct IsConvertibleToArrayImpl : std::false_type {};
+template <template <typename, size_t> class A, typename T, size_t N>
+struct IsConvertibleToArrayImpl<A<T, N>>
+    : std::is_convertible<A<T, N>, std::array<T, N>> {};
+template <typename C>
+using IsConvertibleToArray = IsConvertibleToArrayImpl<absl::decay_t<C>>;
+
+template <typename C>
+struct IsConvertibleToBitsetImpl : std::false_type {};
+template <template <size_t> class B, size_t N>
+struct IsConvertibleToBitsetImpl<B<N>>
+    : std::is_convertible<B<N>, std::bitset<N>> {};
+template <typename C>
+using IsConvertibleToBitset = IsConvertibleToBitsetImpl<absl::decay_t<C>>;
+
+template <typename C>
+struct IsConvertibleToSTLContainer
+    : absl::disjunction<
+          IsConvertibleToArray<C>, IsConvertibleToBitset<C>,
+          IsConvertibleToSpecialization<C, std::deque>,
+          IsConvertibleToSpecialization<C, std::forward_list>,
+          IsConvertibleToSpecialization<C, std::list>,
+          IsConvertibleToSpecialization<C, std::map>,
+          IsConvertibleToSpecialization<C, std::multimap>,
+          IsConvertibleToSpecialization<C, std::set>,
+          IsConvertibleToSpecialization<C, std::multiset>,
+          IsConvertibleToSpecialization<C, std::unordered_map>,
+          IsConvertibleToSpecialization<C, std::unordered_multimap>,
+          IsConvertibleToSpecialization<C, std::unordered_set>,
+          IsConvertibleToSpecialization<C, std::unordered_multiset>,
+          IsConvertibleToSpecialization<C, std::vector>> {};
+
+template <typename C>
+struct IsStrictlyBaseOfAndConvertibleToSTLContainer
+    : absl::conjunction<absl::negation<IsSTLContainer<C>>,
+                        IsBaseOfSTLContainer<C>,
+                        IsConvertibleToSTLContainer<C>> {};
+
+}  // namespace strings_internal
+}  // namespace absl
+#endif  // ABSL_STRINGS_INTERNAL_STL_TYPE_TRAITS_H_

http://git-wip-us.apache.org/repos/asf/marmotta/blob/0eb556da/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/str_join_internal.h
----------------------------------------------------------------------
diff --git a/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/str_join_internal.h b/libraries/ostrich/backend/3rdparty/abseil/absl/strings/internal/str_join_internal.h
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@@ -0,0 +1,309 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// This file declares INTERNAL parts of the Join API that are inlined/templated
+// or otherwise need to be available at compile time. The main abstractions
+// defined in this file are:
+//
+//   - A handful of default Formatters
+//   - JoinAlgorithm() overloads
+//   - JoinRange() overloads
+//   - JoinTuple()
+//
+// DO NOT INCLUDE THIS FILE DIRECTLY. Use this file by including
+// absl/strings/str_join.h
+//
+// IWYU pragma: private, include "absl/strings/str_join.h"
+
+#ifndef ABSL_STRINGS_INTERNAL_STR_JOIN_INTERNAL_H_
+#define ABSL_STRINGS_INTERNAL_STR_JOIN_INTERNAL_H_
+
+#include <cstring>
+#include <iterator>
+#include <memory>
+#include <string>
+#include <type_traits>
+#include <utility>
+
+#include "absl/strings/internal/ostringstream.h"
+#include "absl/strings/internal/resize_uninitialized.h"
+#include "absl/strings/str_cat.h"
+
+namespace absl {
+namespace strings_internal {
+
+//
+// Formatter objects
+//
+// The following are implementation classes for standard Formatter objects. The
+// factory functions that users will call to create and use these formatters are
+// defined and documented in strings/join.h.
+//
+
+// The default formatter. Converts alpha-numeric types to strings.
+struct AlphaNumFormatterImpl {
+  // This template is needed in order to support passing in a dereferenced
+  // vector<bool>::iterator
+  template <typename T>
+  void operator()(std::string* out, const T& t) const {
+    StrAppend(out, AlphaNum(t));
+  }
+
+  void operator()(std::string* out, const AlphaNum& t) const {
+    StrAppend(out, t);
+  }
+};
+
+// A type that's used to overload the JoinAlgorithm() function (defined below)
+// for ranges that do not require additional formatting (e.g., a range of
+// strings).
+
+struct NoFormatter : public AlphaNumFormatterImpl {};
+
+// Formats types to strings using the << operator.
+class StreamFormatterImpl {
+ public:
+  // The method isn't const because it mutates state. Making it const will
+  // render StreamFormatterImpl thread-hostile.
+  template <typename T>
+  void operator()(std::string* out, const T& t) {
+    // The stream is created lazily to avoid paying the relatively high cost
+    // of its construction when joining an empty range.
+    if (strm_) {
+      strm_->clear();  // clear the bad, fail and eof bits in case they were set
+      strm_->str(out);
+    } else {
+      strm_.reset(new strings_internal::OStringStream(out));
+    }
+    *strm_ << t;
+  }
+
+ private:
+  std::unique_ptr<strings_internal::OStringStream> strm_;
+};
+
+// Formats a std::pair<>. The 'first' member is formatted using f1_ and the
+// 'second' member is formatted using f2_. sep_ is the separator.
+template <typename F1, typename F2>
+class PairFormatterImpl {
+ public:
+  PairFormatterImpl(F1 f1, absl::string_view sep, F2 f2)
+      : f1_(std::move(f1)), sep_(sep), f2_(std::move(f2)) {}
+
+  template <typename T>
+  void operator()(std::string* out, const T& p) {
+    f1_(out, p.first);
+    out->append(sep_);
+    f2_(out, p.second);
+  }
+
+  template <typename T>
+  void operator()(std::string* out, const T& p) const {
+    f1_(out, p.first);
+    out->append(sep_);
+    f2_(out, p.second);
+  }
+
+ private:
+  F1 f1_;
+  std::string sep_;
+  F2 f2_;
+};
+
+// Wraps another formatter and dereferences the argument to operator() then
+// passes the dereferenced argument to the wrapped formatter. This can be
+// useful, for example, to join a std::vector<int*>.
+template <typename Formatter>
+class DereferenceFormatterImpl {
+ public:
+  DereferenceFormatterImpl() : f_() {}
+  explicit DereferenceFormatterImpl(Formatter&& f)
+      : f_(std::forward<Formatter>(f)) {}
+
+  template <typename T>
+  void operator()(std::string* out, const T& t) {
+    f_(out, *t);
+  }
+
+  template <typename T>
+  void operator()(std::string* out, const T& t) const {
+    f_(out, *t);
+  }
+
+ private:
+  Formatter f_;
+};
+
+// DefaultFormatter<T> is a traits class that selects a default Formatter to use
+// for the given type T. The ::Type member names the Formatter to use. This is
+// used by the strings::Join() functions that do NOT take a Formatter argument,
+// in which case a default Formatter must be chosen.
+//
+// AlphaNumFormatterImpl is the default in the base template, followed by
+// specializations for other types.
+template <typename ValueType>
+struct DefaultFormatter {
+  typedef AlphaNumFormatterImpl Type;
+};
+template <>
+struct DefaultFormatter<const char*> {
+  typedef AlphaNumFormatterImpl Type;
+};
+template <>
+struct DefaultFormatter<char*> {
+  typedef AlphaNumFormatterImpl Type;
+};
+template <>
+struct DefaultFormatter<std::string> {
+  typedef NoFormatter Type;
+};
+template <>
+struct DefaultFormatter<absl::string_view> {
+  typedef NoFormatter Type;
+};
+template <typename ValueType>
+struct DefaultFormatter<ValueType*> {
+  typedef DereferenceFormatterImpl<typename DefaultFormatter<ValueType>::Type>
+      Type;
+};
+
+template <typename ValueType>
+struct DefaultFormatter<std::unique_ptr<ValueType>>
+    : public DefaultFormatter<ValueType*> {};
+
+//
+// JoinAlgorithm() functions
+//
+
+// The main joining algorithm. This simply joins the elements in the given
+// iterator range, each separated by the given separator, into an output std::string,
+// and formats each element using the provided Formatter object.
+template <typename Iterator, typename Formatter>
+std::string JoinAlgorithm(Iterator start, Iterator end, absl::string_view s,
+                     Formatter&& f) {
+  std::string result;
+  absl::string_view sep("");
+  for (Iterator it = start; it != end; ++it) {
+    result.append(sep.data(), sep.size());
+    f(&result, *it);
+    sep = s;
+  }
+  return result;
+}
+
+// A joining algorithm that's optimized for a forward iterator range of
+// std::string-like objects that do not need any additional formatting. This is to
+// optimize the common case of joining, say, a std::vector<std::string> or a
+// std::vector<absl::string_view>.
+//
+// This is an overload of the previous JoinAlgorithm() function. Here the
+// Formatter argument is of type NoFormatter. Since NoFormatter is an internal
+// type, this overload is only invoked when strings::Join() is called with a
+// range of std::string-like objects (e.g., std::string, absl::string_view), and an
+// explicit Formatter argument was NOT specified.
+//
+// The optimization is that the needed space will be reserved in the output
+// std::string to avoid the need to resize while appending. To do this, the iterator
+// range will be traversed twice: once to calculate the total needed size, and
+// then again to copy the elements and delimiters to the output std::string.
+template <typename Iterator,
+          typename = typename std::enable_if<std::is_convertible<
+              typename std::iterator_traits<Iterator>::iterator_category,
+              std::forward_iterator_tag>::value>::type>
+std::string JoinAlgorithm(Iterator start, Iterator end, absl::string_view s,
+                     NoFormatter) {
+  std::string result;
+  if (start != end) {
+    // Sums size
+    size_t result_size = start->size();
+    for (Iterator it = start; ++it != end;) {
+      result_size += s.size();
+      result_size += it->size();
+    }
+
+    STLStringResizeUninitialized(&result, result_size);
+
+    // Joins strings
+    char* result_buf = &*result.begin();
+    memcpy(result_buf, start->data(), start->size());
+    result_buf += start->size();
+    for (Iterator it = start; ++it != end;) {
+      memcpy(result_buf, s.data(), s.size());
+      result_buf += s.size();
+      memcpy(result_buf, it->data(), it->size());
+      result_buf += it->size();
+    }
+  }
+
+  return result;
+}
+
+// JoinTupleLoop implements a loop over the elements of a std::tuple, which
+// are heterogeneous. The primary template matches the tuple interior case. It
+// continues the iteration after appending a separator (for nonzero indices)
+// and formatting an element of the tuple. The specialization for the I=N case
+// matches the end-of-tuple, and terminates the iteration.
+template <size_t I, size_t N>
+struct JoinTupleLoop {
+  template <typename Tup, typename Formatter>
+  void operator()(std::string* out, const Tup& tup, absl::string_view sep,
+                  Formatter&& fmt) {
+    if (I > 0) out->append(sep.data(), sep.size());
+    fmt(out, std::get<I>(tup));
+    JoinTupleLoop<I + 1, N>()(out, tup, sep, fmt);
+  }
+};
+template <size_t N>
+struct JoinTupleLoop<N, N> {
+  template <typename Tup, typename Formatter>
+  void operator()(std::string*, const Tup&, absl::string_view, Formatter&&) {}
+};
+
+template <typename... T, typename Formatter>
+std::string JoinAlgorithm(const std::tuple<T...>& tup, absl::string_view sep,
+                     Formatter&& fmt) {
+  std::string result;
+  JoinTupleLoop<0, sizeof...(T)>()(&result, tup, sep, fmt);
+  return result;
+}
+
+template <typename Iterator>
+std::string JoinRange(Iterator first, Iterator last, absl::string_view separator) {
+  // No formatter was explicitly given, so a default must be chosen.
+  typedef typename std::iterator_traits<Iterator>::value_type ValueType;
+  typedef typename DefaultFormatter<ValueType>::Type Formatter;
+  return JoinAlgorithm(first, last, separator, Formatter());
+}
+
+template <typename Range, typename Formatter>
+std::string JoinRange(const Range& range, absl::string_view separator,
+                 Formatter&& fmt) {
+  using std::begin;
+  using std::end;
+  return JoinAlgorithm(begin(range), end(range), separator, fmt);
+}
+
+template <typename Range>
+std::string JoinRange(const Range& range, absl::string_view separator) {
+  using std::begin;
+  using std::end;
+  return JoinRange(begin(range), end(range), separator);
+}
+
+}  // namespace strings_internal
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_STR_JOIN_INTERNAL_H_