feat: new copyfolder macro and associated test. Closes #92

base/mp_copyfolder.sas

@@ -0,0 +1,78 @@
+/**
+  @file
+  @brief A macro to recursively copy a directory
+  @details Performs a recursive directory listing then works from top to bottom
+    copying files and creating subdirectories.
+
+  Usage:
+
+      %let rootdir=%sysfunc(pathname(work))/demo;
+      %let copydir=%sysfunc(pathname(work))/demo_copy;
+      %mf_mkdir(&rootdir)
+      %mf_mkdir(&rootdir/subdir)
+      %mf_mkdir(&rootdir/subdir/subsubdir)
+      data "&rootdir/subdir/example.sas7bdat";
+      run;
+
+      %mp_copyfolder(&rootdir,&copydir)
+
+  @param source Unquoted path to the folder to copy from.
+  @param target Unquoted path to the folder to copy to.
+
+  <h4> SAS Macros </h4>
+  @li mf_getuniquename.sas
+  @li mf_isdir.sas
+  @li mf_mkdir.sas
+  @li mp_abort.sas
+  @li mp_dirlist.sas
+
+  <h4> Related Macros </h4>
+  @li mp_copyfolder.test.sas
+
+**/
+
+%macro mp_copyfolder(source,target);
+
+  %mp_abort(iftrue=(%mf_isdir(&source)=0)
+    ,mac=&sysmacroname
+    ,msg=%str(Source dir does not exist (&source))
+  )
+
+  %mf_mkdir(&target)
+
+  %mp_abort(iftrue=(%mf_isdir(&target)=0)
+    ,mac=&sysmacroname
+    ,msg=%str(Target dir could not be created (&target))
+  )
+
+  /* prep temp table */
+  %local tempds;
+  %let tempds=%mf_getuniquename();
+
+  /* recursive directory listing */
+  %mp_dirlist(path=&source,outds=work.&tempds, maxdepth=MAX)
+
+  /* create folders and copy content */
+  data _null_;
+    set work.&tempds;
+    filepath2="&target/"!!substr(filepath,%length(&source)+2);
+    if file_or_folder='folder' then call execute('%mf_mkdir('!!filepath2!!')');
+    else do;
+      length fref1 fref2 $8;
+      rc1=filename(fref1,filepath,'disk','recfm=n');
+      rc2=filename(fref2,filepath2,'disk','recfm=n');
+      if fcopy(fref1,fref2) ne 0 then do;
+        sysmsg=sysmsg();
+        putlog "%str(ERR)OR: Unable to copy " filepath " to " filepath2;
+        putlog sysmg=;
+      end;
+    end;
+    rc=filename(fref1);
+    rc=filename(fref2);
+  run;
+
+  /* tidy up */
+  proc sql;
+  drop table work.&tempds;
+
+%mend mp_copyfolder;