Merge pull request #241 from sasjs/copyfolder_enhancement

feat: Adding copymax parameter

all.sas

@@ -3875,8 +3875,11 @@ drop table &ddlds,&cntlds;
 
       %mp_copyfolder(&rootdir,&copydir)
 
-  @param source Unquoted path to the folder to copy from.
+  @param [in] source Unquoted path to the folder to copy from.
-  @param target Unquoted path to the folder to copy to.
+  @param [out] target Unquoted path to the folder to copy to.
+  @param [in] copymax=(MAX) Set to a positive integer to indicate the level of
+    subdirectory copy recursion - eg 3, to go `./3/levels/deep`.  For unlimited
+    recursion, set to MAX.
 
   <h4> SAS Macros </h4>
   @li mf_getuniquename.sas
@@ -3890,7 +3893,7 @@ drop table &ddlds,&cntlds;
 
 **/
 
-%macro mp_copyfolder(source,target);
+%macro mp_copyfolder(source,target,copymax=MAX);
 
   %mp_abort(iftrue=(%mf_isdir(&source)=0)
     ,mac=&sysmacroname
@@ -3909,7 +3912,7 @@ drop table &ddlds,&cntlds;
   %let tempds=%mf_getuniquename();
 
   /* recursive directory listing */
-  %mp_dirlist(path=&source,outds=work.&tempds, maxdepth=MAX)
+  %mp_dirlist(path=&source,outds=work.&tempds,maxdepth=&copymax)
 
   /* create folders and copy content */
   data _null_;
@@ -3937,7 +3940,8 @@ drop table &ddlds,&cntlds;
   proc sql;
   drop table work.&tempds;
 
-%mend mp_copyfolder;/**
+%mend mp_copyfolder;
+/**
   @file
   @brief Create the permanent Core tables
   @details Several macros in the [core](https://github.com/sasjs/core) library
@@ -8385,7 +8389,7 @@ run;
 %if %mf_getattrn(&libds,NLOBS)=0 %then %do;
   data &outds;
     length hashkey $32;
-    retain hashkey "%sysfunc(md5(%str(&salt)),$hex32.)";
+    hashkey=put(md5("&salt"),$hex32.);
     output;
     stop;
   run;
@@ -8402,7 +8406,8 @@ run;
   %end;
   ;
     length &prevkeyvar &keyvar $32;
-    retain &prevkeyvar "%sysfunc(md5(%str(&salt)),$hex32.)";
+    retain &prevkeyvar;
+    if _n_=1 then &prevkeyvar=put(md5("&salt"),$hex32.);
     set &libds end=&lastvar;
     /* hash should include previous row */
     &keyvar=%mp_md5(

base/mp_copyfolder.sas

@@ -16,8 +16,11 @@
 
       %mp_copyfolder(&rootdir,&copydir)
 
-  @param source Unquoted path to the folder to copy from.
+  @param [in] source Unquoted path to the folder to copy from.
-  @param target Unquoted path to the folder to copy to.
+  @param [out] target Unquoted path to the folder to copy to.
+  @param [in] copymax=(MAX) Set to a positive integer to indicate the level of
+    subdirectory copy recursion - eg 3, to go `./3/levels/deep`.  For unlimited
+    recursion, set to MAX.
 
   <h4> SAS Macros </h4>
   @li mf_getuniquename.sas
@@ -31,7 +34,7 @@
 
 **/
 
-%macro mp_copyfolder(source,target);
+%macro mp_copyfolder(source,target,copymax=MAX);
 
   %mp_abort(iftrue=(%mf_isdir(&source)=0)
     ,mac=&sysmacroname
@@ -50,7 +53,7 @@
   %let tempds=%mf_getuniquename();
 
   /* recursive directory listing */
-  %mp_dirlist(path=&source,outds=work.&tempds, maxdepth=MAX)
+  %mp_dirlist(path=&source,outds=work.&tempds,maxdepth=&copymax)
 
   /* create folders and copy content */
   data _null_;

base/mp_hashdataset.sas

@@ -58,7 +58,7 @@
 %if %mf_getattrn(&libds,NLOBS)=0 %then %do;
   data &outds;
     length hashkey $32;
-    retain hashkey "%sysfunc(md5(%str(&salt)),$hex32.)";
+    hashkey=put(md5("&salt"),$hex32.);
     output;
     stop;
   run;
@@ -75,7 +75,8 @@
   %end;
   ;
     length &prevkeyvar &keyvar $32;
-    retain &prevkeyvar "%sysfunc(md5(%str(&salt)),$hex32.)";
+    retain &prevkeyvar;
+    if _n_=1 then &prevkeyvar=put(md5("&salt"),$hex32.);
     set &libds end=&lastvar;
     /* hash should include previous row */
     &keyvar=%mp_md5(