[api] Added interface: pipy.version

CMakeLists.txt

@@ -356,10 +356,8 @@ add_executable(pipy
   deps/sqlite-3.43.2/sqlite3.c
 )
 
-add_custom_command(
-  OUTPUT ${CMAKE_BINARY_DIR}/deps/version.h
-  COMMAND ${CMAKE_SOURCE_DIR}/generate_version_h.${EXT_SHELL}
-  ARGS ${CMAKE_BINARY_DIR}/deps/version.h
+execute_process(
+  COMMAND ${CMAKE_SOURCE_DIR}/generate_version_h.${EXT_SHELL} ${CMAKE_BINARY_DIR}/deps/version.h
   WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
 )
 

generate_version_h.sh

@@ -10,13 +10,21 @@ else
   COMMIT_DATE=`git log -1 --format=%cD`
 fi
 
-echo "
+OLD=`cat $1`
+
+NEW="
 #ifndef __VERSION_H__
 #define __VERSION_H__
 
 #define PIPY_VERSION \"$VERSION\"
 #define PIPY_COMMIT \"$COMMIT\"
 #define PIPY_COMMIT_DATE \"$COMMIT_DATE\"
 
-#endif // __VERSION_H__
-" > $1
+#endif // __VERSION_H__"
+
+if [ "$NEW" != "$OLD" ]; then
+  echo "Writing $1..."
+  echo "$NEW" > $1;
+else
+  echo "Version file $1 has no changes"
+fi

src/api/pipy.cpp

@@ -44,6 +44,8 @@
 
 #include <exception>
 
+#include "version.h"
+
 #ifndef _WIN32
 #include <unistd.h>
 #include <signal.h>
@@ -55,6 +57,14 @@ namespace pipy {
 thread_local static pjs::Ref<pjs::Array> s_argv;
 thread_local static std::list<pjs::Ref<pjs::Function>> s_exit_callbacks;
 
+auto Pipy::version() -> pjs::Object* {
+  auto obj = pjs::Object::make();
+  obj->set("version", PIPY_VERSION);
+  obj->set("commit", PIPY_COMMIT);
+  obj->set("date", PIPY_COMMIT_DATE);
+  return obj;
+}
+
 auto Pipy::argv() -> pjs::Array* {
   return s_argv;
 }
@@ -607,6 +617,10 @@ template<> void ClassDef<Pipy>::init() {
   variable("inbound", class_of<Pipy::Inbound>());
   variable("outbound", class_of<Pipy::Outbound>());
 
+  accessor("version", [](Object *, Value &ret) {
+    ret.set(Pipy::version());
+  });
+
   accessor("pid", [](Object *, Value &ret) {
     ret.set(os::process_id());
   });

src/api/pipy.hpp

@@ -106,6 +106,7 @@ class Pipy : public pjs::FunctionTemplate<Pipy> {
     void on_file_changed(bool changed);
   };
 
+  static auto version() -> pjs::Object*;
   static auto argv() -> pjs::Array*;
   static void argv(const std::vector<std::string> &argv);
   static void on_exit(const std::function<void(int)> &on_exit);