XSLT: Add check for correct EOL separator (#6803)

Co-authored-by: Lars Hvam <larshp@hotmail.com>

.editorconfig

@@ -12,6 +12,10 @@ trim_trailing_whitespace = true
 indent_style = space
 indent_size = 1
 
+# XSLT source code must have CR LF to be deserialized correctly by SAP code
+[*.xslt.source.xml]
+end_of_line = crlf
+
 # match the format used by abapGit
 [*.{abap,js,json,html,css}]
 charset = utf-8

src/objects/zcl_abapgit_object_xslt.clas.abap

@@ -122,6 +122,8 @@ CLASS zcl_abapgit_object_xslt IMPLEMENTATION.
       iv_extra = 'source'
       iv_ext   = 'xml' ).
 
+    zcl_abapgit_utils=>check_eol( lv_source ).
+
 * workaround: somewhere additional linefeeds are added
     lv_len = strlen( lv_source ) - 2.
     IF lv_source+lv_len(2) = cl_abap_char_utilities=>cr_lf.

src/utils/zcl_abapgit_utils.clas.abap

@@ -15,6 +15,11 @@ CLASS zcl_abapgit_utils DEFINITION
         iv_email        TYPE string
       RETURNING
         VALUE(rv_valid) TYPE abap_bool.
+    CLASS-METHODS check_eol
+      IMPORTING
+        !iv_data TYPE string
+      RAISING
+        zcx_abapgit_exception.
   PROTECTED SECTION.
   PRIVATE SECTION.
 ENDCLASS.
@@ -24,6 +29,19 @@ ENDCLASS.
 CLASS zcl_abapgit_utils IMPLEMENTATION.
 
 
+  METHOD check_eol.
+
+    " Check if data is using CRLF as EOL separator. If only LF is used, data was likely
+    " edited by externtal tools
+    IF iv_data IS NOT INITIAL AND
+       iv_data CS cl_abap_char_utilities=>newline AND
+       iv_data NS cl_abap_char_utilities=>cr_lf.
+      zcx_abapgit_exception=>raise( 'Incorrect source format: Requires CRLF instead of LF' ).
+    ENDIF.
+
+  ENDMETHOD.
+
+
   METHOD is_binary.
 
     " Previously we did a simple char range test described here