Manifest: do not allow path lists in library.source-dir (#1077)

src/fpm/manifest/library.f90

@@ -12,7 +12,7 @@ module fpm_manifest_library
     use fpm_error, only : error_t, syntax_error
     use fpm_strings, only: string_t, string_cat, operator(==)
     use fpm_toml, only : toml_table, toml_key, toml_stat, get_value, get_list, serializable_t, set_value, &
-                          set_list, set_string, get_value, get_list
+                          set_list, set_string, get_value, has_list
     implicit none
     private
 
@@ -63,6 +63,11 @@ subroutine new_library(self, table, error)
 
         call check(table, error)
         if (allocated(error)) return
+
+        if (has_list(table, "source-dir")) then 
+            call syntax_error(error, "Manifest key [library.source-dir] does not allow list input")
+            return
+        end if
 
         call get_value(table, "source-dir", self%source_dir, "src")
         call get_value(table, "build-script", self%build_script)

src/fpm/toml.f90

@@ -28,7 +28,7 @@ module fpm_toml
     public :: read_package_file, toml_table, toml_array, toml_key, toml_stat, &
               get_value, set_value, get_list, new_table, add_table, add_array, len, &
               toml_error, toml_serialize, toml_load, check_keys, set_list, set_string, &
-              name_is_json
+              name_is_json, has_list
 
     !> An abstract interface for any fpm class that should be fully serializable to/from TOML/JSON
     type, abstract, public :: serializable_t
@@ -337,6 +337,29 @@ subroutine read_package_file(table, manifest, error)
         end if
 
     end subroutine read_package_file
+
+    !> Check if an instance of the TOML data structure contains a list
+    logical function has_list(table, key)
+
+        !> Instance of the TOML data structure
+        type(toml_table), intent(inout) :: table
+
+        !> Key to read from
+        character(len=*), intent(in) :: key
+
+        type(toml_array), pointer :: children
+
+        has_list = .false.
+
+        if (.not.table%has_key(key)) return
+
+        call get_value(table, key, children, requested=.false.)
+
+        ! There is an allocated list
+        has_list = associated(children)
+
+    end function has_list
+
 
     subroutine get_list(table, key, list, error)
 

test/fpm_test/test_manifest.f90

@@ -4,7 +4,7 @@ module test_manifest
     use testsuite, only : new_unittest, unittest_t, error_t, test_failed, check_string
     use fpm_manifest
     use fpm_manifest_profile, only: profile_config_t, find_profile
-    use fpm_strings, only: operator(.in.)
+    use fpm_strings, only: operator(.in.), string_t
     use fpm_error, only: fatal_error, error_t
     implicit none
     private
@@ -46,6 +46,7 @@ subroutine collect_manifest(tests)
             & new_unittest("build-key-invalid", test_build_invalid_key), &
             & new_unittest("library-empty", test_library_empty), &
             & new_unittest("library-wrongkey", test_library_wrongkey, should_fail=.true.), &
+            & new_unittest("library-list", test_library_list, should_fail=.true.), &
             & new_unittest("package-simple", test_package_simple), &
             & new_unittest("package-empty", test_package_empty, should_fail=.true.), &
             & new_unittest("package-typeerror", test_package_typeerror, should_fail=.true.), &
@@ -887,6 +888,47 @@ subroutine test_library_wrongkey(error)
 
     end subroutine test_library_wrongkey
 
+   !> Pass a TOML table with not allowed source dirs
+    subroutine test_library_list(error)
+        use fpm_manifest_library
+        use fpm_toml, only : new_table, set_list, toml_table
+
+        !> Error handling
+        type(error_t), allocatable, intent(out) :: error
+
+        type(string_t), allocatable :: source_dirs(:)
+        type(toml_table) :: table
+        type(library_config_t) :: library
+
+        source_dirs = [string_t("src1"),string_t("src2")]
+        call new_table  (table)
+        call set_list   (table, "source-dir", source_dirs, error)
+        call new_library(library, table, error)
+
+    end subroutine test_library_list
+
+    !> Pass a TOML table with a 1-sized source dir list
+    subroutine test_library_listone(error)
+        use fpm_manifest_library
+        use fpm_toml, only : new_table, set_list, toml_table
+
+        !> Error handling
+        type(error_t), allocatable, intent(out) :: error
+
+        type(package_config_t) :: package
+        character(:), allocatable :: temp_file
+        integer :: unit
+
+        open(file=temp_file, newunit=unit)
+        write(unit, '(a)') &
+            & 'name = "example"', &
+            & '[library]', &
+            & 'source-dir = ["my-src"]'
+        close(unit)
+
+        call get_package_data(package, temp_file, error)
+
+    end subroutine test_library_listone
 
     !> Packages cannot be created from empty tables
     subroutine test_package_simple(error)