Introduce fmt::format dependency

src/cpp/benders/benders_core/CMakeLists.txt

@@ -56,13 +56,15 @@ target_include_directories(benders_core
         $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
 )
 
+find_package(fmt REQUIRED)
 target_link_libraries(benders_core
         PUBLIC
         antaresXpansion::helpers
         antaresXpansion::output_core
         antaresXpansion::solvers
         ${JSONCPP_LIB}
         antaresXpansion::outer_loop_lib
+        fmt::fmt
 )
 
 target_link_libraries(benders_core PRIVATE TBB::tbb)

src/cpp/benders/benders_core/ProblemFormatStream.cpp

@@ -0,0 +1,18 @@
+#include "antares-xpansion/benders/benders_core/ProblemFormatStream.h"
+
+auto fmt::formatter<ProblemsFormat>::format(ProblemsFormat problems_format,
+            format_context &ctx) const -> format_context::iterator
+{
+  string_view result = "Unknown";
+  switch (problems_format) {
+    case ProblemsFormat::MPS_FILE:
+      result = "MPS_FILE";
+      break;
+    case ProblemsFormat::SAVED_FILE:
+      result = "SAVED_FILE";
+      break;
+    default:
+      result = "Unknown";
+  }
+  return formatter<string_view>::format(result, ctx);
+}

src/cpp/benders/benders_core/include/antares-xpansion/benders/benders_core/ProblemFormat.h

@@ -2,6 +2,7 @@
 
 #include <stdexcept>
 #include <string>
+
 enum class ProblemsFormat { MPS_FILE, SAVED_FILE };
 
 inline ProblemsFormat problemsFormatFromString(const std::string &str) {
@@ -12,18 +13,4 @@ inline ProblemsFormat problemsFormatFromString(const std::string &str) {
   } else {
     throw std::runtime_error("Unknown ProblemsFormat: " + str);
   }
-}
-
-inline std::ostream &operator<<(std::ostream &stream, ProblemsFormat const &rhs) {
-  switch (rhs) {
-    case ProblemsFormat::MPS_FILE:
-      stream << "MPS_FILE";
-      break;
-    case ProblemsFormat::SAVED_FILE:
-      stream << "SAVED_FILE";
-      break;
-    default:
-      stream << "Unknown";
-  }
-  return stream;
 }

src/cpp/benders/benders_core/include/antares-xpansion/benders/benders_core/ProblemFormatStream.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <fmt/format.h>
+
+#include <ostream>
+
+#include "ProblemFormat.h"
+
+inline std::ostream &operator<<(std::ostream &stream,
+                                ProblemsFormat const &rhs) {
+  switch (rhs) {
+    case ProblemsFormat::MPS_FILE:
+      stream << "MPS_FILE";
+      break;
+    case ProblemsFormat::SAVED_FILE:
+      stream << "SAVED_FILE";
+      break;
+    default:
+      stream << "Unknown";
+  }
+  return stream;
+}
+
+template <>
+struct fmt::formatter<ProblemsFormat> : formatter<string_view> {
+  // parse is inherited from formatter<string_view>.
+
+  auto format(ProblemsFormat problems_format,
+              format_context &ctx) const -> format_context::iterator;
+};

vcpkg.json

@@ -34,7 +34,8 @@
         "zlib"
       ]
     },
-    "tbb"
+    "tbb",
+    "fmt"
   ],
   "overrides": [
     {