ECC-1904: API function to get the git branch

CMakeLists.txt

@@ -379,6 +379,16 @@ if( HAVE_FORTRAN AND CMAKE_Fortran_COMPILER_ID MATCHES "GNU" AND NOT CMAKE_Fortr
     ecbuild_add_fortran_flags("-fallow-argument-mismatch")
 endif()
 
+if(GIT_FOUND AND NOT ${GIT_EXECUTABLE} STREQUAL "")
+    ecbuild_info("Found git: ${GIT_EXECUTABLE} (found version \"${GIT_VERSION_STRING}\")")
+    execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse --abbrev-ref HEAD
+                    OUTPUT_VARIABLE eccodes_GIT_BRANCH
+                    RESULT_VARIABLE nok ERROR_VARIABLE error
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                    WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}" )
+    ecbuild_info("ecCodes branch = ${eccodes_GIT_BRANCH}" )
+endif()
+
 ###############################################################################
 # contents
 

src/eccodes.cc

@@ -28,6 +28,11 @@ const char* codes_get_git_sha1()
 {
     return grib_get_git_sha1();
 }
+const char* codes_get_git_branch()
+{
+    return grib_get_git_branch();
+}
+
 const char* codes_get_package_name(void)
 {
     return grib_get_package_name();

src/eccodes.h

@@ -1264,6 +1264,7 @@ long codes_get_api_version(void);
  */
 const char* codes_get_git_sha1(void);
 
+const char* codes_get_git_branch(void);
 const char* codes_get_build_date(void);
 
 /**

src/eccodes_prototypes.h

@@ -942,6 +942,7 @@ int grib_optimize_decimal_factor(grib_accessor* a, const char* reference_value,
 
 /* grib_api_version.cc */
 const char* grib_get_git_sha1(void);
+const char* grib_get_git_branch(void);
 const char* codes_get_build_date(void);
 
 /* grib_bits_any_endian.cc */

src/grib_api.h

@@ -1259,6 +1259,8 @@ long grib_get_api_version(void);
  */
 const char* grib_get_git_sha1(void);
 
+const char* grib_get_git_branch(void);
+
 /**
  *  Get the package name
  *

src/grib_api_version.cc.in

@@ -13,6 +13,12 @@ const char* grib_get_git_sha1(void)
 {
     return "@eccodes_GIT_SHA1@";
 }
+
+const char* grib_get_git_branch(void)
+{
+    return "@eccodes_GIT_BRANCH@";
+}
+
 const char* codes_get_build_date(void)
 {
     return "@eccodes_BUILD_DATE@";

tools/codes_info.cc

@@ -40,7 +40,13 @@ static void print_debug_info(grib_context* context)
 #ifdef HAVE_AEC
     aec = 1;
 #endif
-    grib_context_log(context, GRIB_LOG_DEBUG, "Git SHA1:         %s", grib_get_git_sha1());
+    const char* git_branch = grib_get_git_branch();
+    const char* git_sha1 = grib_get_git_sha1();
+    if (strlen(git_branch) > 0)
+        grib_context_log(context, GRIB_LOG_DEBUG, "Git branch:       %s", git_branch);
+    if (strlen(git_sha1) > 0)
+        grib_context_log(context, GRIB_LOG_DEBUG, "Git SHA1:         %s", git_sha1);
+
     grib_context_log(context, GRIB_LOG_DEBUG, "Build date:       %s", codes_get_build_date());
     grib_context_log(context, GRIB_LOG_DEBUG, "Features:");
     grib_context_log(context, GRIB_LOG_DEBUG, "  HAVE_AEC=%d", aec);