CTest: Add parser for hardware spec file

2 files changed, 173 insertions, 0 deletions

diff --git a/Source/CTest/cmCTestHardwareSpec.cxx b/Source/CTest/cmCTestHardwareSpec.cxx
new file mode 100644
index 0000000000..137398aa83
--- /dev/null
+++ b/Source/CTest/cmCTestHardwareSpec.cxx
@@ -0,0 +1,133 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmCTestHardwareSpec.h"
+
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "cmsys/FStream.hxx"
+#include "cmsys/RegularExpression.hxx"
+
+#include "cm_jsoncpp_reader.h"
+#include "cm_jsoncpp_value.h"
+
+static const cmsys::RegularExpression IdentifierRegex{ "^[a-z_][a-z0-9_]*$" };
+static const cmsys::RegularExpression IdRegex{ "^[a-z0-9_]+$" };
+
+bool cmCTestHardwareSpec::ReadFromJSONFile(const std::string& filename)
+{
+  cmsys::ifstream fin(filename.c_str());
+  if (!fin) {
+    return false;
+  }
+
+  Json::Value root;
+  Json::CharReaderBuilder builder;
+  if (!Json::parseFromStream(builder, fin, &root, nullptr)) {
+    return false;
+  }
+
+  if (!root.isObject()) {
+    return false;
+  }
+
+  auto const& local = root["local"];
+  if (!local.isArray()) {
+    return false;
+  }
+  if (local.size() > 1) {
+    return false;
+  }
+
+  if (local.empty()) {
+    this->LocalSocket.Resources.clear();
+    return true;
+  }
+
+  auto const& localSocket = local[0];
+  if (!localSocket.isObject()) {
+    return false;
+  }
+  std::map<std::string, std::vector<cmCTestHardwareSpec::Resource>> resources;
+  cmsys::RegularExpressionMatch match;
+  for (auto const& key : localSocket.getMemberNames()) {
+    if (IdentifierRegex.find(key.c_str(), match)) {
+      auto const& value = localSocket[key];
+      auto& r = resources[key];
+      if (value.isArray()) {
+        for (auto const& item : value) {
+          if (item.isObject()) {
+            cmCTestHardwareSpec::Resource resource;
+
+            if (!item.isMember("id")) {
+              return false;
+            }
+            auto const& id = item["id"];
+            if (!id.isString()) {
+              return false;
+            }
+            resource.Id = id.asString();
+            if (!IdRegex.find(resource.Id.c_str(), match)) {
+              return false;
+            }
+
+            if (item.isMember("slots")) {
+              auto const& capacity = item["slots"];
+              if (!capacity.isConvertibleTo(Json::uintValue)) {
+                return false;
+              }
+              resource.Capacity = capacity.asUInt();
+            } else {
+              resource.Capacity = 1;
+            }
+
+            r.push_back(resource);
+          } else {
+            return false;
+          }
+        }
+      } else {
+        return false;
+      }
+    }
+  }
+
+  this->LocalSocket.Resources = std::move(resources);
+  return true;
+}
+
+bool cmCTestHardwareSpec::operator==(const cmCTestHardwareSpec& other) const
+{
+  return this->LocalSocket == other.LocalSocket;
+}
+
+bool cmCTestHardwareSpec::operator!=(const cmCTestHardwareSpec& other) const
+{
+  return !(*this == other);
+}
+
+bool cmCTestHardwareSpec::Socket::operator==(
+  const cmCTestHardwareSpec::Socket& other) const
+{
+  return this->Resources == other.Resources;
+}
+
+bool cmCTestHardwareSpec::Socket::operator!=(
+  const cmCTestHardwareSpec::Socket& other) const
+{
+  return !(*this == other);
+}
+
+bool cmCTestHardwareSpec::Resource::operator==(
+  const cmCTestHardwareSpec::Resource& other) const
+{
+  return this->Id == other.Id && this->Capacity == other.Capacity;
+}
+
+bool cmCTestHardwareSpec::Resource::operator!=(
+  const cmCTestHardwareSpec::Resource& other) const
+{
+  return !(*this == other);
+}
diff --git a/Source/CTest/cmCTestHardwareSpec.h b/Source/CTest/cmCTestHardwareSpec.h
new file mode 100644
index 0000000000..a0b4cae596
--- /dev/null
+++ b/Source/CTest/cmCTestHardwareSpec.h
@@ -0,0 +1,40 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#ifndef cmCTestHardwareSpec_h
+#define cmCTestHardwareSpec_h
+
+#include <map>
+#include <string>
+#include <vector>
+
+class cmCTestHardwareSpec
+{
+public:
+  class Resource
+  {
+  public:
+    std::string Id;
+    unsigned int Capacity;
+
+    bool operator==(const Resource& other) const;
+    bool operator!=(const Resource& other) const;
+  };
+
+  class Socket
+  {
+  public:
+    std::map<std::string, std::vector<Resource>> Resources;
+
+    bool operator==(const Socket& other) const;
+    bool operator!=(const Socket& other) const;
+  };
+
+  Socket LocalSocket;
+
+  bool ReadFromJSONFile(const std::string& filename);
+
+  bool operator==(const cmCTestHardwareSpec& other) const;
+  bool operator!=(const cmCTestHardwareSpec& other) const;
+};
+
+#endif