Merge pull request #318 from sasjs/hashfix

fix: ensuring mp_hashdirectory will output an empty dataset when the …

.github/workflows/main.yml

@@ -19,3 +19,10 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
           NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+      - name: SAS Packages Release
+        run: |
+          npx @sasjs/cli compile job -s sasjs/utils/create_sas_package.sas -o sasjsbuild
+          # this part depends on https://github.com/sasjs/server/issues/307
+          # sasjs run sasjsbuild/makepak.sas -t sas9
+
+

README.md

@@ -237,6 +237,7 @@ If you find this library useful, please leave a [star](https://github.com/sasjs/
 
 The following repositories are also worth checking out:
 
+* [xieliaing/SAS](https://github.com/xieliaing/SAS)
 * [SASJedi/sas-macros](https://github.com/SASJedi/sas-macros)
 * [chris-swenson/sasmacros](https://github.com/chris-swenson/sasmacros)
 * [greg-wotton/sas-programs](https://github.com/greg-wootton/sas-programs)

all.sas

@@ -4534,6 +4534,9 @@ run;
   @param [in] maxdepth= (0) Set to a positive integer to indicate the level of
     subdirectory scan recursion - eg 3, to go `./3/levels/deep`.  For unlimited
     recursion, set to MAX.
+  @param [in] showparent= (NO) By default, the initial parent directory is not
+    part of the results.  Set to YES to include it.  For this record only,
+    directory=filepath.
   @param [out] outds= (work.mp_dirlist) The output dataset to create
   @param [out] getattrs= (NO)  If getattrs=YES then the doptname / foptname
     functions are used to scan all properties - any characters that are not
@@ -4570,6 +4573,7 @@ run;
     , fref=0
     , outds=work.mp_dirlist
     , getattrs=NO
+    , showparent=NO
     , maxdepth=0
     , level=0 /* The level of recursion to perform.  For internal use only. */
 )/*/STORE SOURCE*/;
@@ -4604,8 +4608,7 @@ data &out_ds(compress=no
     if did=0 then do;
       putlog "NOTE: This directory is empty, or does not exist - &path";
       msg=sysmsg();
-      put msg;
+      put (_all_)(=);
-      put _all_;
       stop;
     end;
     /* attribute is OS-dependent - could be "Directory" or "Directory Name" */
@@ -4652,6 +4655,15 @@ data &out_ds(compress=no
     output;
   end;
   rc = dclose(did);
+  %if &showparent=YES and &level=0 %then %do;
+    filepath=directory;
+    file_or_folder='folder';
+    ext='';
+    filename=scan(directory,-1,'/\');
+    msg='';
+    level=&level;
+    output;
+  %end;
   stop;
 run;
 
@@ -4739,6 +4751,9 @@ run;
   data _null_;
     set &out_ds;
     where file_or_folder='folder';
+  %if &showparent=YES and &level=0 %then %do;
+    if filepath ne directory;
+  %end;
     length code $10000;
     code=cats('%nrstr(%mp_dirlist(path=',filepath,",outds=&outds"
       ,",getattrs=&getattrs,level=%eval(&level+1),maxdepth=&maxdepth))");
@@ -5754,7 +5769,7 @@ data _null_;
 run;
 
 %if %upcase(&showlog)=YES %then %do;
-  options ps=max;
+  options ps=max lrecl=max;
   data _null_;
     infile &outref;
     input;
@@ -5762,7 +5777,8 @@ run;
   run;
 %end;
 
-%mend mp_ds2md;/**
+%mend mp_ds2md;
+/**
   @file
   @brief Create a smaller version of a dataset, without data loss
   @details This macro will scan the input dataset and create a new one, that
@@ -8151,6 +8167,192 @@ create table &outds as
 )
 
 %mend mp_getpk;
+/**
+  @file
+  @brief Stages files in a GIT repo
+  @details Uses the output dataset from mp_gitstatus.sas to determine the files
+  that should be staged.
+
+  If `STAGED ne "TRUE"` then the file is staged.
+
+  Usage:
+
+      %let dir=%sysfunc(pathname(work))/core;
+      %let repo=https://github.com/sasjs/core;
+      %put source clone rc=%sysfunc(GITFN_CLONE(&repo,&dir));
+      %mf_writefile(&dir/somefile.txt,l1=some content)
+      %mf_deletefile(&dir/package.json)
+      %mp_gitstatus(&dir,outds=work.gitstatus)
+
+      %mp_gitadd(&dir,inds=work.gitstatus)
+
+  @param [in] gitdir The directory containing the GIT repository
+  @param [in] inds= (work.mp_gitadd) The input dataset with the list of files
+  to stage.  Will accept the output from mp_gitstatus(), else just use a table
+  with the following columns:
+    @li path $1024 - relative path to the file in the repo
+    @li staged $32 - whether the file is staged (TRUE or FALSE)
+    @li status $64 - either new, deleted, or modified
+
+  @param [in] mdebug= (0) Set to 1 to enable DEBUG messages
+
+  <h4> Related Files </h4>
+  @li mp_gitadd.test.sas
+  @li mp_gitstatus.sas
+
+**/
+
+%macro mp_gitadd(gitdir,inds=work.mp_gitadd,mdebug=0);
+
+data _null_;
+  set &inds;
+  if STAGED ne "TRUE";
+  rc=git_index_add("&gitdir",cats(path),status);
+  if rc ne 0 or &mdebug=1 then put rc=;
+run;
+
+%mend mp_gitadd;
+/**
+  @file
+  @brief Pulls latest release info from a GIT repository
+  @details Useful for grabbing the latest version number or other attributes
+  from a GIT server.  Supported providers are GitLab and GitHub. Pull requests
+  are welcome if you'd like to see additional providers!
+
+  Note that each provider provides slightly different JSON output.  Therefore
+  the macro simply extracts the JSON and assigns the libname (using the JSON
+  engine).
+
+  Example usage (eg, to grab latest release version from github):
+
+      %mp_gitreleaseinfo(GITHUB,sasjs/core,outlib=mylibref)
+
+      data _null_;
+        set mylibref.root;
+        putlog TAG_NAME=;
+      run;
+
+  @param [in] provider The GIT provider for the release info.  Accepted values:
+    @li GITLAB
+    @li GITHUB - Tables include root, assets, author, alldata
+  @param [in] project The link to the repository.  This has different formats
+    depending on the vendor:
+    @li GITHUB - org/repo, eg sasjs/core
+    @li GITLAB - project, eg 1343223
+  @param [in] server= (0) If your repo is self-hosted, then provide the domain
+    here.  Otherwise it will default to the provider domain (eg gitlab.com).
+  @param [in] mdebug= (0) Set to 1 to enable DEBUG messages
+  @param [out] outlib= (GITREL) The JSON-engine libref to be created, which will
+    point at the returned JSON
+
+  <h4> SAS Macros </h4>
+  @li mf_getuniquefileref.sas
+
+  <h4> Related Files </h4>
+  @li mp_gitreleaseinfo.test.sas
+
+**/
+
+%macro mp_gitreleaseinfo(provider,project,server=0,outlib=GITREL,mdebug=0);
+%local url fref;
+
+%let provider=%upcase(&provider);
+
+%if &provider=GITHUB %then %do;
+  %if "&server"="0" %then %let server=https://api.github.com;
+  %let url=&server/repos/&project/releases/latest;
+%end;
+%else %if &provider=GITLAB %then %do;
+  %if "&server"="0" %then %let server=https://gitlab.com;
+  %let url=&server/api/v4/projects/&project/releases;
+%end;
+
+%let fref=%mf_getuniquefileref();
+
+proc http method='GET' out=&fref url="&url";
+%if &mdebug=1 %then %do;
+  debug level = 3;
+%end;
+run;
+
+libname &outlib JSON fileref=&fref;
+
+%if &mdebug=1 %then %do;
+  data _null_;
+    infile &fref;
+    input;
+    putlog _infile_;
+  run;
+%end;
+
+%mend mp_gitreleaseinfo;
+/**
+  @file
+  @brief Creates a dataset with the output from `GIT_STATUS()`
+  @details Uses `git_status()` to fetch the number of changed files, then
+  iterates with `git_status_get()`, inserting all attributes into an output
+  dataset.
+
+  Usage:
+
+      %let dir=%sysfunc(pathname(work))/core;
+      %let repo=https://github.com/sasjs/core;
+      %put source clone rc=%sysfunc(GITFN_CLONE(&repo,&dir));
+      %mf_writefile(&dir/somefile.txt,l1=some content)
+      %mf_deletefile(&dir/package.json)
+
+      %mp_gitstatus(&dir,outds=work.gitstatus)
+
+  More info on these functions is in this [helpful paper]
+(https://www.sas.com/content/dam/SAS/support/en/sas-global-forum-proceedings/2019/3057-2019.pdf)
+  by Danny Zimmerman.
+
+  @param [in] gitdir The directory containing the GIT repository
+  @param [out] outds= (work.git_status) The output dataset to create.  Vars:
+    @li gitdir $1024 - directory of repo
+    @li path $1024 - relative path to the file in the repo
+    @li staged $32 - whether the file is staged (TRUE or FALSE)
+    @li status $64 - either new, deleted, or modified
+    @li cnt - number of files
+    @li n - the "nth" file in the list from git_status()
+
+  @param [in] mdebug= (0) Set to 1 to enable DEBUG messages
+
+  <h4> Related Files </h4>
+  @li mp_gitstatus.test.sas
+  @li mp_gitadd.sas
+
+**/
+
+%macro mp_gitstatus(gitdir,outds=work.mp_gitstatus,mdebug=0);
+
+data &outds;
+  LENGTH gitdir path $ 1024 STATUS $ 64 STAGED $ 32;
+  call missing (of _all_);
+  gitdir=symget('gitdir');
+  cnt=git_status(trim(gitdir));
+  if cnt=-1 then do;
+    put "The libgit2 library is unavailable and no Git operations can be used.";
+    put "See: https://stackoverflow.com/questions/74082874";
+  end;
+  else if cnt=-2 then do;
+    put "The libgit2 library is available, but the status function failed.";
+    put "See the log for details.";
+  end;
+  else do n=1 to cnt;
+    rc=GIT_STATUS_GET(n,gitdir,'PATH',path);
+    rc=GIT_STATUS_GET(n,gitdir,'STAGED',staged);
+    rc=GIT_STATUS_GET(n,gitdir,'STATUS',status);
+    output;
+  %if &mdebug=1 %then %do;
+    putlog (_all_)(=);
+  %end;
+  end;
+  rc=git_status_free(gitdir);
+  drop rc cnt;
+run;
+
+%mend mp_gitstatus;
 /**
   @file
   @brief Performs a text substitution on a file
@@ -8553,7 +8755,7 @@ run;
         put hashkey=;
       run;
 
-  ![sas md5 hash dataset log results](https://i.imgur.com/MqF98vk.png)
+  ![sas md5 hash dataset log results](https://i.4gl.io/1/KorUKoyE05.png/raw)
 
   <h4> SAS Macros </h4>
   @li mf_getattrn.sas
@@ -8563,11 +8765,12 @@ run;
 
   <h4> Related Files </h4>
   @li mp_hashdataset.test.sas
+  @li mp_hashdirectory.sas
 
   @param [in] libds dataset to hash
   @param [in] salt= Provide a salt (could be, for instance, the dataset name)
-  @param [in] iftrue= A condition under which the macro should be executed.
+  @param [in] iftrue= (1=1) A condition under which the macro should be executed
-  @param [out] outds= (work.mf_hashdataset) The output dataset to create. This
+  @param [out] outds= (work._data_) The output dataset to create. This
   will contain one column (hashkey) with one observation (a $hex32.
   representation of the input hash)
   |hashkey:$32.|
@@ -8630,6 +8833,170 @@ run;
   run;
 %end;
 %mend mp_hashdataset;
+/**
+  @file
+  @brief Returns a unique hash for each file in a directory
+  @details Hashes each file in each directory, and then hashes the hashes to
+  create a hash for each directory also.
+
+  This makes use of the new `hashing_file()` and `hashing` functions, available
+  since 9.4m6. Interestingly, those functions can be used in pure macro, eg:
+
+      %put %sysfunc(hashing_file(md5,/path/to/file.blob,0));
+
+  Actual usage:
+
+      %let fpath=/some/directory;
+
+      %mp_hashdirectory(&fpath,outds=myhash,maxdepth=2)
+
+      data _null_;
+        set work.myhash;
+        put (_all_)(=);
+      run;
+
+  Whilst files are hashed in their entirety, the logic for creating a folder
+  hash is as follows:
+
+  @li Sort the files by filename (case sensitive, uppercase then lower)
+  @li Take the first 100 hashes, concatenate and hash
+  @li Concatenate this hash with another 100 hashes and hash again
+  @li Continue until the end of the folder.  This is the folder hash
+  @li If a folder contains other folders, start from the bottom of the tree -
+    the folder hashes cascade upwards so you know immediately if there is a
+    change in a sub/sub directory
+  @li If a subfolder has no content (empty) then it is ignored. No hash created.
+  @li If the file is empty, it is also ignored / no hash created.
+  @li If the target directory (&inloc) is empty, &outds will also be empty
+
+  <h4> SAS Macros </h4>
+  @li mp_dirlist.sas
+
+  <h4> Related Files </h4>
+  @li mp_hashdataset.sas
+  @li mp_hashdirectory.test.sas
+  @li mp_md5.sas
+
+  @param [in] inloc Full filepath of the file to be hashed (unquoted)
+  @param [in] iftrue= (1=1) A condition under which the macro should be executed
+  @param [in] maxdepth= (0) Set to a positive integer to indicate the level of
+    subdirectory scan recursion - eg 3, to go `./3/levels/deep`.  For unlimited
+    recursion, set to MAX.
+  @param [in] method= (MD5) the hashing method to use.  Available options:
+    @li MD5
+    @li SH1
+    @li SHA256
+    @li SHA384
+    @li SHA512
+    @li CRC32
+  @param [out] outds= (work.mp_hashdirectory) The output dataset.  Contains:
+    @li directory - the parent folder
+    @li file_hash - the hash output
+    @li hash_duration - how long the hash took (first hash always takes longer)
+    @li file_path - /full/path/to/each/file.ext
+    @li file_or_folder - contains either "file" or "folder"
+    @li level - the depth of the directory (top level is 0)
+
+  @version 9.4m6
+  @author Allan Bowe
+**/
+
+%macro mp_hashdirectory(inloc,
+  outds=work.mp_hashdirectory,
+  method=MD5,
+  maxdepth=0,
+  iftrue=%str(1=1)
+)/*/STORE SOURCE*/;
+
+%local curlevel tempds maxlevel;
+
+%if not(%eval(%unquote(&iftrue))) %then %return;
+
+/* get the directory listing */
+%mp_dirlist(path=&inloc, outds=&outds, maxdepth=&maxdepth, showparent=YES)
+
+/* create the hashes */
+data &outds;
+  set &outds (rename=(filepath=file_path));
+  length FILE_HASH $32 HASH_DURATION 8;
+  keep directory file_hash hash_duration file_path file_or_folder level;
+
+  ts=datetime();
+  if file_or_folder='file' then do;
+    /* if file is empty, hashing_file will break - so ignore / delete */
+    length fname val $8;
+    drop fname val fid is_empty;
+    rc=filename(fname,file_path);
+    fid=fopen(fname);
+    if fid > 0 then do;
+      rc=fread(fid);
+      is_empty=fget(fid,val);
+    end;
+    rc=fclose(fid);
+    rc=filename(fname);
+    if is_empty ne 0 then delete;
+    else file_hash=hashing_file("&method",cats(file_path),0);
+  end;
+  hash_duration=datetime()-ts;
+run;
+
+proc sort data=&outds ;
+  by descending level directory file_path;
+run;
+
+%let maxlevel=0;
+data _null_;
+  set &outds;
+  call symputx('maxlevel',level,'l');
+  stop;
+run;
+
+/* now hash the hashes to populate folder hashes, starting from the bottom */
+%do curlevel=&maxlevel %to 0 %by -1;
+  data work._data_ (keep=directory file_hash);
+    set &outds;
+    where level=&curlevel;
+    by descending level directory file_path;
+    length str $32767 tmp_hash $32;
+    retain str tmp_hash ;
+    /* reset vars when starting a new directory */
+    if first.directory then do;
+      str='';
+      tmp_hash='';
+      i=0;
+    end;
+    /* hash each chunk of 100 file paths */
+    i+1;
+    str=cats(str,file_hash);
+    if mod(i,100)=0 or last.directory then do;
+      tmp_hash=hashing("&method",cats(tmp_hash,str));
+      str='';
+    end;
+    /* output the hash at directory level */
+    if last.directory then do;
+      file_hash=tmp_hash;
+      output;
+    end;
+    if last.level then stop;
+  run;
+  %let tempds=&syslast;
+  /* join the hash back into the main table */
+  proc sql undo_policy=none;
+  create table &outds as
+    select a.directory
+      ,coalesce(b.file_hash,a.file_hash) as file_hash
+      ,a.hash_duration
+      ,a.file_path
+      ,a.file_or_folder
+      ,a.level
+    from &outds a
+    left join &tempds b
+    on a.file_path=b.directory
+    order by level desc, directory, file_path;
+  drop table &tempds;
+%end;
+
+%mend mp_hashdirectory;
 /**
   @file
   @brief Performs a wrapped \%include
@@ -21990,6 +22357,66 @@ run;
   %end;
 
 %mend mfv_existfolder;/**
+  @file mfv_existsashdat.sas
+  @brief Checks whether a CAS sashdat dataset exists in persistent storage.
+  @details Can be used in open code, eg as follows:
+
+      %if %mfv_existsashdat(libds=casuser.sometable) %then %put  yes it does!;
+
+  The function uses `dosubl()` to run the `table.fileinfo` action, for the
+  specified library, filtering for `*.sashdat` tables.  The results are stored
+  in a WORK table (&outprefix._&lib). If that table already exists, it is
+  queried instead, to avoid the dosubl() performance hit.
+
+  To force a rescan, just use a new `&outprefix` value, or delete the table(s)
+  before running the function.
+
+  @param libds library.dataset
+  @param outprefix= (work.mfv_existsashdat) Used to store the current HDATA
+    tables to improve subsequent query performance.  This reference is a prefix
+    and is converted to `&prefix._{libref}`
+
+  @return output returns 1 or 0
+
+  @version 0.2
+  @author Mathieu Blauw
+**/
+
+%macro mfv_existsashdat(libds,outprefix=work.mfv_existsashdat
+);
+%local rc dsid name lib ds;
+%let lib=%upcase(%scan(&libds,1,'.'));
+%let ds=%upcase(%scan(&libds,-1,'.'));
+
+/* if table does not exist, create it */
+%if %sysfunc(exist(&outprefix._&lib)) ne 1 %then %do;
+  %let rc=%sysfunc(dosubl(%nrstr(
+    /* Read in table list (once per &lib per session) */
+    proc cas;
+      table.fileinfo result=source_list /caslib="&lib";
+      val=findtable(source_list);
+      saveresult val dataout=&outprefix._&lib;
+    quit;
+    /* Only keep name, without file extension */
+    data &outprefix._&lib;
+      set &outprefix._&lib(where=(Name like '%.sashdat') keep=Name);
+      Name=upcase(scan(Name,1,'.'));
+    run;
+  )));
+%end;
+
+/* Scan table for hdat existence */
+%let dsid=%sysfunc(open(&outprefix._&lib(where=(name="&ds"))));
+%syscall set(dsid);
+%let rc = %sysfunc(fetch(&dsid));
+%let rc = %sysfunc(close(&dsid));
+
+/* Return result */
+%if "%trim(&name)"="%trim(&ds)" %then 1;
+%else 0;
+
+%mend mfv_existsashdat;
+/**
   @file
   @brief Creates a file in SAS Drive
   @details Creates a file in SAS Drive and adds the appropriate content type.

base/mp_dirlist.sas

@@ -27,6 +27,9 @@
   @param [in] maxdepth= (0) Set to a positive integer to indicate the level of
     subdirectory scan recursion - eg 3, to go `./3/levels/deep`.  For unlimited
     recursion, set to MAX.
+  @param [in] showparent= (NO) By default, the initial parent directory is not
+    part of the results.  Set to YES to include it.  For this record only,
+    directory=filepath.
   @param [out] outds= (work.mp_dirlist) The output dataset to create
   @param [out] getattrs= (NO)  If getattrs=YES then the doptname / foptname
     functions are used to scan all properties - any characters that are not
@@ -63,6 +66,7 @@
     , fref=0
     , outds=work.mp_dirlist
     , getattrs=NO
+    , showparent=NO
     , maxdepth=0
     , level=0 /* The level of recursion to perform.  For internal use only. */
 )/*/STORE SOURCE*/;
@@ -97,8 +101,7 @@ data &out_ds(compress=no
     if did=0 then do;
       putlog "NOTE: This directory is empty, or does not exist - &path";
       msg=sysmsg();
-      put msg;
+      put (_all_)(=);
-      put _all_;
       stop;
     end;
     /* attribute is OS-dependent - could be "Directory" or "Directory Name" */
@@ -145,6 +148,15 @@ data &out_ds(compress=no
     output;
   end;
   rc = dclose(did);
+  %if &showparent=YES and &level=0 %then %do;
+    filepath=directory;
+    file_or_folder='folder';
+    ext='';
+    filename=scan(directory,-1,'/\');
+    msg='';
+    level=&level;
+    output;
+  %end;
   stop;
 run;
 
@@ -232,6 +244,9 @@ run;
   data _null_;
     set &out_ds;
     where file_or_folder='folder';
+  %if &showparent=YES and &level=0 %then %do;
+    if filepath ne directory;
+  %end;
     length code $10000;
     code=cats('%nrstr(%mp_dirlist(path=',filepath,",outds=&outds"
       ,",getattrs=&getattrs,level=%eval(&level+1),maxdepth=&maxdepth))");

base/mp_ds2md.sas

@@ -92,7 +92,7 @@ data _null_;
 run;
 
 %if %upcase(&showlog)=YES %then %do;
-  options ps=max;
+  options ps=max lrecl=max;
   data _null_;
     infile &outref;
     input;
@@ -100,4 +100,4 @@ run;
   run;
 %end;
 
-%mend mp_ds2md;
+%mend mp_ds2md;

base/mp_gitadd.sas

@@ -0,0 +1,45 @@
+/**
+  @file
+  @brief Stages files in a GIT repo
+  @details Uses the output dataset from mp_gitstatus.sas to determine the files
+  that should be staged.
+
+  If `STAGED ne "TRUE"` then the file is staged.
+
+  Usage:
+
+      %let dir=%sysfunc(pathname(work))/core;
+      %let repo=https://github.com/sasjs/core;
+      %put source clone rc=%sysfunc(GITFN_CLONE(&repo,&dir));
+      %mf_writefile(&dir/somefile.txt,l1=some content)
+      %mf_deletefile(&dir/package.json)
+      %mp_gitstatus(&dir,outds=work.gitstatus)
+
+      %mp_gitadd(&dir,inds=work.gitstatus)
+
+  @param [in] gitdir The directory containing the GIT repository
+  @param [in] inds= (work.mp_gitadd) The input dataset with the list of files
+  to stage.  Will accept the output from mp_gitstatus(), else just use a table
+  with the following columns:
+    @li path $1024 - relative path to the file in the repo
+    @li staged $32 - whether the file is staged (TRUE or FALSE)
+    @li status $64 - either new, deleted, or modified
+
+  @param [in] mdebug= (0) Set to 1 to enable DEBUG messages
+
+  <h4> Related Files </h4>
+  @li mp_gitadd.test.sas
+  @li mp_gitstatus.sas
+
+**/
+
+%macro mp_gitadd(gitdir,inds=work.mp_gitadd,mdebug=0);
+
+data _null_;
+  set &inds;
+  if STAGED ne "TRUE";
+  rc=git_index_add("&gitdir",cats(path),status);
+  if rc ne 0 or &mdebug=1 then put rc=;
+run;
+
+%mend mp_gitadd;

base/mp_gitreleaseinfo.sas

@@ -0,0 +1,74 @@
+/**
+  @file
+  @brief Pulls latest release info from a GIT repository
+  @details Useful for grabbing the latest version number or other attributes
+  from a GIT server.  Supported providers are GitLab and GitHub. Pull requests
+  are welcome if you'd like to see additional providers!
+
+  Note that each provider provides slightly different JSON output.  Therefore
+  the macro simply extracts the JSON and assigns the libname (using the JSON
+  engine).
+
+  Example usage (eg, to grab latest release version from github):
+
+      %mp_gitreleaseinfo(GITHUB,sasjs/core,outlib=mylibref)
+
+      data _null_;
+        set mylibref.root;
+        putlog TAG_NAME=;
+      run;
+
+  @param [in] provider The GIT provider for the release info.  Accepted values:
+    @li GITLAB
+    @li GITHUB - Tables include root, assets, author, alldata
+  @param [in] project The link to the repository.  This has different formats
+    depending on the vendor:
+    @li GITHUB - org/repo, eg sasjs/core
+    @li GITLAB - project, eg 1343223
+  @param [in] server= (0) If your repo is self-hosted, then provide the domain
+    here.  Otherwise it will default to the provider domain (eg gitlab.com).
+  @param [in] mdebug= (0) Set to 1 to enable DEBUG messages
+  @param [out] outlib= (GITREL) The JSON-engine libref to be created, which will
+    point at the returned JSON
+
+  <h4> SAS Macros </h4>
+  @li mf_getuniquefileref.sas
+
+  <h4> Related Files </h4>
+  @li mp_gitreleaseinfo.test.sas
+
+**/
+
+%macro mp_gitreleaseinfo(provider,project,server=0,outlib=GITREL,mdebug=0);
+%local url fref;
+
+%let provider=%upcase(&provider);
+
+%if &provider=GITHUB %then %do;
+  %if "&server"="0" %then %let server=https://api.github.com;
+  %let url=&server/repos/&project/releases/latest;
+%end;
+%else %if &provider=GITLAB %then %do;
+  %if "&server"="0" %then %let server=https://gitlab.com;
+  %let url=&server/api/v4/projects/&project/releases;
+%end;
+
+%let fref=%mf_getuniquefileref();
+
+proc http method='GET' out=&fref url="&url";
+%if &mdebug=1 %then %do;
+  debug level = 3;
+%end;
+run;
+
+libname &outlib JSON fileref=&fref;
+
+%if &mdebug=1 %then %do;
+  data _null_;
+    infile &fref;
+    input;
+    putlog _infile_;
+  run;
+%end;
+
+%mend mp_gitreleaseinfo;

base/mp_gitstatus.sas

@@ -0,0 +1,67 @@
+/**
+  @file
+  @brief Creates a dataset with the output from `GIT_STATUS()`
+  @details Uses `git_status()` to fetch the number of changed files, then
+  iterates with `git_status_get()`, inserting all attributes into an output
+  dataset.
+
+  Usage:
+
+      %let dir=%sysfunc(pathname(work))/core;
+      %let repo=https://github.com/sasjs/core;
+      %put source clone rc=%sysfunc(GITFN_CLONE(&repo,&dir));
+      %mf_writefile(&dir/somefile.txt,l1=some content)
+      %mf_deletefile(&dir/package.json)
+
+      %mp_gitstatus(&dir,outds=work.gitstatus)
+
+  More info on these functions is in this [helpful paper]
+(https://www.sas.com/content/dam/SAS/support/en/sas-global-forum-proceedings/2019/3057-2019.pdf)
+  by Danny Zimmerman.
+
+  @param [in] gitdir The directory containing the GIT repository
+  @param [out] outds= (work.git_status) The output dataset to create.  Vars:
+    @li gitdir $1024 - directory of repo
+    @li path $1024 - relative path to the file in the repo
+    @li staged $32 - whether the file is staged (TRUE or FALSE)
+    @li status $64 - either new, deleted, or modified
+    @li cnt - number of files
+    @li n - the "nth" file in the list from git_status()
+
+  @param [in] mdebug= (0) Set to 1 to enable DEBUG messages
+
+  <h4> Related Files </h4>
+  @li mp_gitstatus.test.sas
+  @li mp_gitadd.sas
+
+**/
+
+%macro mp_gitstatus(gitdir,outds=work.mp_gitstatus,mdebug=0);
+
+data &outds;
+  LENGTH gitdir path $ 1024 STATUS $ 64 STAGED $ 32;
+  call missing (of _all_);
+  gitdir=symget('gitdir');
+  cnt=git_status(trim(gitdir));
+  if cnt=-1 then do;
+    put "The libgit2 library is unavailable and no Git operations can be used.";
+    put "See: https://stackoverflow.com/questions/74082874";
+  end;
+  else if cnt=-2 then do;
+    put "The libgit2 library is available, but the status function failed.";
+    put "See the log for details.";
+  end;
+  else do n=1 to cnt;
+    rc=GIT_STATUS_GET(n,gitdir,'PATH',path);
+    rc=GIT_STATUS_GET(n,gitdir,'STAGED',staged);
+    rc=GIT_STATUS_GET(n,gitdir,'STATUS',status);
+    output;
+  %if &mdebug=1 %then %do;
+    putlog (_all_)(=);
+  %end;
+  end;
+  rc=git_status_free(gitdir);
+  drop rc cnt;
+run;
+
+%mend mp_gitstatus;

base/mp_hashdataset.sas

@@ -11,7 +11,7 @@
         put hashkey=;
       run;
 
-  ![sas md5 hash dataset log results](https://i.imgur.com/MqF98vk.png)
+  ![sas md5 hash dataset log results](https://i.4gl.io/1/KorUKoyE05.png/raw)
 
   <h4> SAS Macros </h4>
   @li mf_getattrn.sas
@@ -21,11 +21,12 @@
 
   <h4> Related Files </h4>
   @li mp_hashdataset.test.sas
+  @li mp_hashdirectory.sas
 
   @param [in] libds dataset to hash
   @param [in] salt= Provide a salt (could be, for instance, the dataset name)
-  @param [in] iftrue= A condition under which the macro should be executed.
+  @param [in] iftrue= (1=1) A condition under which the macro should be executed
-  @param [out] outds= (work.mf_hashdataset) The output dataset to create. This
+  @param [out] outds= (work._data_) The output dataset to create. This
   will contain one column (hashkey) with one observation (a $hex32.
   representation of the input hash)
   |hashkey:$32.|

base/mp_hashdirectory.sas

@@ -0,0 +1,164 @@
+/**
+  @file
+  @brief Returns a unique hash for each file in a directory
+  @details Hashes each file in each directory, and then hashes the hashes to
+  create a hash for each directory also.
+
+  This makes use of the new `hashing_file()` and `hashing` functions, available
+  since 9.4m6. Interestingly, those functions can be used in pure macro, eg:
+
+      %put %sysfunc(hashing_file(md5,/path/to/file.blob,0));
+
+  Actual usage:
+
+      %let fpath=/some/directory;
+
+      %mp_hashdirectory(&fpath,outds=myhash,maxdepth=2)
+
+      data _null_;
+        set work.myhash;
+        put (_all_)(=);
+      run;
+
+  Whilst files are hashed in their entirety, the logic for creating a folder
+  hash is as follows:
+
+  @li Sort the files by filename (case sensitive, uppercase then lower)
+  @li Take the first 100 hashes, concatenate and hash
+  @li Concatenate this hash with another 100 hashes and hash again
+  @li Continue until the end of the folder.  This is the folder hash
+  @li If a folder contains other folders, start from the bottom of the tree -
+    the folder hashes cascade upwards so you know immediately if there is a
+    change in a sub/sub directory
+  @li If a subfolder has no content (empty) then it is ignored. No hash created.
+  @li If the file is empty, it is also ignored / no hash created.
+  @li If the target directory (&inloc) is empty, &outds will also be empty
+
+  <h4> SAS Macros </h4>
+  @li mp_dirlist.sas
+
+  <h4> Related Files </h4>
+  @li mp_hashdataset.sas
+  @li mp_hashdirectory.test.sas
+  @li mp_md5.sas
+
+  @param [in] inloc Full filepath of the file to be hashed (unquoted)
+  @param [in] iftrue= (1=1) A condition under which the macro should be executed
+  @param [in] maxdepth= (0) Set to a positive integer to indicate the level of
+    subdirectory scan recursion - eg 3, to go `./3/levels/deep`.  For unlimited
+    recursion, set to MAX.
+  @param [in] method= (MD5) the hashing method to use.  Available options:
+    @li MD5
+    @li SH1
+    @li SHA256
+    @li SHA384
+    @li SHA512
+    @li CRC32
+  @param [out] outds= (work.mp_hashdirectory) The output dataset.  Contains:
+    @li directory - the parent folder
+    @li file_hash - the hash output
+    @li hash_duration - how long the hash took (first hash always takes longer)
+    @li file_path - /full/path/to/each/file.ext
+    @li file_or_folder - contains either "file" or "folder"
+    @li level - the depth of the directory (top level is 0)
+
+  @version 9.4m6
+  @author Allan Bowe
+**/
+
+%macro mp_hashdirectory(inloc,
+  outds=work.mp_hashdirectory,
+  method=MD5,
+  maxdepth=0,
+  iftrue=%str(1=1)
+)/*/STORE SOURCE*/;
+
+%local curlevel tempds maxlevel;
+
+%if not(%eval(%unquote(&iftrue))) %then %return;
+
+/* get the directory listing */
+%mp_dirlist(path=&inloc, outds=&outds, maxdepth=&maxdepth, showparent=YES)
+
+/* create the hashes */
+data &outds;
+  set &outds (rename=(filepath=file_path));
+  length FILE_HASH $32 HASH_DURATION 8;
+  keep directory file_hash hash_duration file_path file_or_folder level;
+
+  ts=datetime();
+  if file_or_folder='file' then do;
+    /* if file is empty, hashing_file will break - so ignore / delete */
+    length fname val $8;
+    drop fname val fid is_empty;
+    rc=filename(fname,file_path);
+    fid=fopen(fname);
+    if fid > 0 then do;
+      rc=fread(fid);
+      is_empty=fget(fid,val);
+    end;
+    rc=fclose(fid);
+    rc=filename(fname);
+    if is_empty ne 0 then delete;
+    else file_hash=hashing_file("&method",cats(file_path),0);
+  end;
+  hash_duration=datetime()-ts;
+run;
+
+proc sort data=&outds ;
+  by descending level directory file_path;
+run;
+
+%let maxlevel=0;
+data _null_;
+  set &outds;
+  call symputx('maxlevel',level,'l');
+  stop;
+run;
+
+/* now hash the hashes to populate folder hashes, starting from the bottom */
+%do curlevel=&maxlevel %to 0 %by -1;
+  data work._data_ (keep=directory file_hash);
+    set &outds;
+    where level=&curlevel;
+    by descending level directory file_path;
+    length str $32767 tmp_hash $32;
+    retain str tmp_hash ;
+    /* reset vars when starting a new directory */
+    if first.directory then do;
+      str='';
+      tmp_hash='';
+      i=0;
+    end;
+    /* hash each chunk of 100 file paths */
+    i+1;
+    str=cats(str,file_hash);
+    if mod(i,100)=0 or last.directory then do;
+      tmp_hash=hashing("&method",cats(tmp_hash,str));
+      str='';
+    end;
+    /* output the hash at directory level */
+    if last.directory then do;
+      file_hash=tmp_hash;
+      output;
+    end;
+    if last.level then stop;
+  run;
+  %let tempds=&syslast;
+  /* join the hash back into the main table */
+  proc sql undo_policy=none;
+  create table &outds as
+    select a.directory
+      ,coalesce(b.file_hash,a.file_hash) as file_hash
+      ,a.hash_duration
+      ,a.file_path
+      ,a.file_or_folder
+      ,a.level
+    from &outds a
+    left join &tempds b
+    on a.file_path=b.directory
+    order by level desc, directory, file_path;
+  drop table &tempds;
+%end;
+
+%mend mp_hashdirectory;

sasjs/sasjsconfig.json

@@ -67,12 +67,16 @@
     },
     {
       "name": "server",
-      "serverUrl": "https://sas.4gl.io",
+      "serverUrl": "https://sas9.4gl.io",
       "serverType": "SASJS",
       "httpsAgentOptions": {
         "allowInsecureRequests": false
       },
       "appLoc": "/sasjs/core",
+      "deployConfig": {
+        "deployServicePack": true,
+        "deployScripts": []
+      },
       "macroFolders": [
         "server",
         "tests/serveronly"
@@ -105,6 +109,16 @@
         "deployServicePack": true
       },
       "contextName": "SAS Job Execution compute context"
+    },
+    {
+      "name": "sasjs9",
+      "serverUrl": "https://sas9.4gl.io",
+      "serverType": "SASJS",
+      "appLoc": "/Public/app/sasjs9",
+      "deployConfig": {
+        "deployServicePack": true,
+        "deployScripts": []
+      }
     }
   ]
-}
+}

sasjs/utils/create_sas_package.sas

@@ -0,0 +1,224 @@
+/**
+  @file
+  @brief Deploy repo as a SAS PACKAGES module
+  @details After every release, this program is executed to update the SASPAC
+    repo with the latest macros (and same version number).
+    The program is first compiled using sasjs compile, then executed using
+    sasjs run.
+
+    Requires the server to have SSH keys.
+
+  <h4> SAS Macros </h4>
+  @li mp_gitadd.sas
+  @li mp_gitreleaseinfo.sas
+  @li mp_gitstatus.sas
+
+**/
+
+
+/* get package version */
+%mp_gitreleaseinfo(GITHUB,sasjs/core,outlib=splib)
+data _null_;
+  set splib.root;
+  call symputx('version',substr(TAG_NAME,2));
+run;
+
+/* clone the source repo */
+%let dir = %sysfunc(pathname(work))/core;
+%put source clone rc=%sysfunc(GITFN_CLONE(https://github.com/sasjs/core,&dir));
+
+
+/*
+  clone the target repo.
+  If you have issues, see: https://stackoverflow.com/questions/74082874
+*/
+options dlcreatedir;
+libname _ "&dirOut.";
+%let dirOut = %sysfunc(pathname(work))/package;
+%put tgt clone rc=%sysfunc(GITFN_CLONE(
+  git@github.com:SASPAC/sasjscore.git,
+  &dirOut,
+  git,
+  %str( ),
+  /home/sasjssrv/.ssh/id_ecdsa.pub,
+  /home/sasjssrv/.ssh/id_ecdsa
+));
+
+
+/*
+  Prepare Package Metadata
+*/
+data _null_;
+  infile CARDS4;
+  file  "&dirOut./description.sas";
+  input;
+  if _infile_ =: 'Version:' then put "Version: &version.";
+                            else put _infile_;
+CARDS4;
+Type: Package
+Package: SASjsCore
+Title: SAS Macros for Application Development
+Version: $(PLACEHOLDER)
+Author: Allan Bowe
+Maintainer: 4GL Ltd
+License: MIT
+Encoding: UTF8
+
+DESCRIPTION START:
+
+The SASjs Macro Core library is a component of the SASjs framework, the
+source for which is avaible here: https://github.com/sasjs
+
+Macros are divided by:
+
+* Macro Functions (prefix mf_)
+* Macro Procedures (prefix mp_)
+* Macros for Metadata (prefix mm_)
+* Macros for SASjs Server (prefix ms_)
+* Macros for Viya (prefix mv_)
+
+DESCRIPTION END:
+;;;;
+run;
+
+/*
+  Prepare Package License
+*/
+data _null_;
+  file  "&dirOut./license.sas";
+  infile "&dir/LICENSE";
+  input;
+  put _infile_;
+run;
+
+/*
+  Extract Core files into MacroCore Package location
+*/
+data members(compress=char);
+  length dref dref2 $ 8 name name2 $ 32 path $ 2048;
+  rc = filename(dref, "&dir.");
+  put dref=;
+  did = dopen(dref);
+  if did then
+    do i = 1 to dnum(did);
+      name = dread(did, i);
+      if name in
+        ("base" "ddl" "fcmp" "lua" "meta" "metax" "server" "viya" "xplatform")
+      then do;
+          rc = filename(dref2,catx("/", "&dir.", name));
+          put dref2= name;
+          did2 = dopen(dref2);
+
+          if did2 then
+            do j = 1 to dnum(did2);
+              name2 = dread(did2, j);
+              path = catx("/", "&dir.", name, name2);
+              if "sas" = scan(name2, -1, ".") then output;
+            end;
+          rc = dclose(did2);
+          rc = filename(dref2);
+        end;
+    end;
+  rc = dclose(did);
+  rc = filename(dref);
+  keep name name2 path;
+run;
+
+%let temp_options = %sysfunc(getoption(source)) %sysfunc(getoption(notes));
+options nosource nonotes;
+data _null_;
+  set members;
+  by name notsorted;
+
+  ord + first.name;
+
+  if first.name then
+    do;
+      call execute('libname _ '
+        !! quote(catx("/", "&dirOut.", put(ord, z3.)!!"_macros"))
+        !! ";"
+      );
+      put @1 "./" ord z3. "_macros/";
+    end;
+
+  put @10 name2;
+  call execute("
+  data _null_;
+    infile " !! quote(strip(path)) !! ";
+    file " !! quote(catx("/", "&dirOut.", put(ord, z3.)!!"_macros", name2)) !!";
+    input;
+    select;
+      when (2 = trigger) put _infile_;
+      when (_infile_ = '/**') do; put '/*** HELP START ***//**'; trigger+1; end;
+      when (_infile_ = '**/') do; put '**//*** HELP END ***/';   trigger+1; end;
+      otherwise put _infile_;
+    end;
+  run;");
+
+run;
+options &temp_options.;
+
+/*
+  Generate SASjsCore Package
+*/
+%GeneratePackage(
+  filesLocation=&dirOut
+)
+
+/**
+  * apply new version in a github action
+  * 1. create folder
+  * 2. create template yaml
+  * 3. replace version number
+  */
+
+%mf_mkdir(&dirout/.github/workflows)
+
+%let desc=Version &version of sasjs/core is now on SAS PACKAGES :ok_hand:;
+data _null_;
+  file "&dirout/.github/workflows/release.yml";
+  put "name: SASjs Core Package Publish Tag";
+  put "on:";
+  put "  push:";
+  put "    branches:";
+  put "      - main";
+  put "jobs:";
+  put "  update:";
+  put "    runs-on: ubuntu-latest";
+  put "    steps:";
+  put "      - uses: actions/checkout@master";
+  put "      - name: Make Release";
+  put "        uses: alice-biometrics/release-creator/@v1.0.5";
+  put "        with:";
+  put "          github_token: ${{ secrets.GH_TOKEN }}";
+  put "          branch: main";
+  put "          draft: false";
+  put "          version: &version";
+  put "          description: '&desc'";
+run;
+
+
+/**
+  * Add, Commit & Push!
+  */
+%mp_gitstatus(&dirout,outds=work.gitstatus,mdebug=1)
+%mp_gitadd(&dirout,inds=work.gitstatus,mdebug=1)
+
+data _null_;
+  rc=gitfn_commit("&dirout"
+    ,"HEAD","&sysuserid","sasjs@core"
+    ,"FEAT: Releasing &version"
+  );
+  put rc=;
+  rc=git_push(
+    "&dirout"
+    ,"git"
+    ,""
+    ,"/home/sasjssrv/.ssh/id_ecdsa.pub"
+    ,"/home/sasjssrv/.ssh/id_ecdsa"
+  );
+run;
+
+
+
+

tests/base/mp_gitadd.test.sas

@@ -0,0 +1,53 @@
+/**
+  @file
+  @brief Testing mp_gitadd.sas macro
+
+  <h4> SAS Macros </h4>
+  @li mf_deletefile.sas
+  @li mf_writefile.sas
+  @li mp_gitadd.sas
+  @li mp_gitstatus.sas
+  @li mp_assert.sas
+
+**/
+
+/* clone the source repo */
+%let dir = %sysfunc(pathname(work))/core;
+%put source clone rc=%sysfunc(GITFN_CLONE(https://github.com/sasjs/core,&dir));
+
+/* add a file */
+%mf_writefile(&dir/somefile.txt,l1=some content)
+/* change a file */
+%mf_writefile(&dir/readme.md,l1=new readme)
+/* delete a file */
+%mf_deletefile(&dir/package.json)
+
+/* Run git status */
+%mp_gitstatus(&dir,outds=work.gitstatus)
+
+%let test1=0;
+proc sql noprint;
+select count(*) into: test1 from work.gitstatus where staged='FALSE';
+
+/* should be three unstaged changes now */
+%mp_assert(
+  iftrue=(&test1=3),
+  desc=3 changes are ready to add,
+  outds=work.test_results
+)
+
+/* add them */
+%mp_gitadd(&dir,inds=work.gitstatus,mdebug=&sasjs_mdebug)
+
+/* check status */
+%mp_gitstatus(&dir,outds=work.gitstatus2)
+%let test2=0;
+proc sql noprint;
+select count(*) into: test2 from work.gitstatus2 where staged='TRUE';
+
+/* should be three staged changes now */
+%mp_assert(
+  iftrue=(&test2=3),
+  desc=3 changes were added,
+  outds=work.test_results
+)

tests/base/mp_gitreleaseinfo.test.sas

@@ -0,0 +1,30 @@
+/**
+  @file
+  @brief Testing mp_gitreleaseinfo.sas macro
+
+  <h4> SAS Macros </h4>
+  @li mp_gitreleaseinfo.sas
+  @li mp_assert.sas
+
+**/
+
+
+%mp_gitreleaseinfo(github,sasjs/core,outlib=mylibref,mdebug=1)
+
+%mp_assert(
+  iftrue=(&syscc=0),
+  desc=mp_gitreleaseinfo runs without errors,
+  outds=work.test_results
+)
+
+data _null_;
+  set mylibref.author;
+  putlog (_all_)(=);
+  call symputx('author',login);
+run;
+
+%mp_assert(
+  iftrue=(&author=sasjsbot),
+  desc=release info extracted successfully,
+  outds=work.test_results
+)

tests/base/mp_gitstatus.test.sas

@@ -0,0 +1,39 @@
+/**
+  @file
+  @brief Testing mp_gitstatus.sas macro
+
+  <h4> SAS Macros </h4>
+  @li mf_deletefile.sas
+  @li mf_writefile.sas
+  @li mp_gitstatus.sas
+  @li mp_assertdsobs.sas
+
+**/
+
+/* clone the source repo */
+%let dir = %sysfunc(pathname(work))/core;
+%put source clone rc=%sysfunc(GITFN_CLONE(https://github.com/sasjs/core,&dir));
+
+%mp_gitstatus(&dir,outds=work.gitstatus)
+
+%mp_assert(
+  iftrue=(&syscc=0),
+  desc=Initial mp_gitstatus runs without errors,
+  outds=work.test_results
+)
+
+/* should be empty as there are no changes yet */
+%mp_assertdsobs(work.gitstatus,test=EMPTY)
+
+/* add a file */
+%mf_writefile(&dir/somefile.txt,l1=some content)
+/* change a file */
+%mf_writefile(&dir/readme.md,l1=new readme)
+/* delete a file */
+%mf_deletefile(&dir/package.json)
+
+/* re-run git status */
+%mp_gitstatus(&dir,outds=work.gitstatus)
+
+/* should be three changes now */
+%mp_assertdsobs(work.gitstatus,test=EQUALS 3)

tests/base/mp_hashdirectory.test.sas

@@ -0,0 +1,149 @@
+/**
+  @file
+  @brief Testing mp_hashdirectory.sas macro
+
+
+  <h4> SAS Macros </h4>
+  @li mf_mkdir.sas
+  @li mf_nobs.sas
+  @li mp_assert.sas
+  @li mp_assertscope.sas
+  @li mp_hashdirectory.sas
+
+**/
+
+/* set up a directory to hash */
+%let fpath=%sysfunc(pathname(work))/testdir;
+
+%mf_mkdir(&fpath)
+%mf_mkdir(&fpath/sub1)
+%mf_mkdir(&fpath/sub2)
+%mf_mkdir(&fpath/sub1/subsub)
+
+/* note - the path in the file means the hash is different in each run */
+%macro makefile(path,name);
+  data _null_;
+    file "&path/&name" termstr=lf;
+    put "This file is located at:";
+    put "&path";
+    put "and it is called:";
+    put "&name";
+  run;
+%mend makefile;
+
+%macro spawner(path);
+  %do x=1 %to 5;
+    %makefile(&path,file&x..txt)
+  %end;
+%mend spawner;
+
+%spawner(&fpath)
+%spawner(&fpath/sub1)
+%spawner(&fpath/sub1/subsub)
+
+
+%mp_assertscope(SNAPSHOT)
+%mp_hashdirectory(&fpath,outds=work.hashes,maxdepth=MAX)
+%mp_assertscope(COMPARE)
+
+%mp_assert(
+  iftrue=(&syscc=0),
+  desc=No errors,
+  outds=work.test_results
+)
+
+%mp_assert(
+  iftrue=(%mf_nobs(work.hashes)=19),
+  desc=record created for each entry,
+  outds=work.test_results
+)
+
+proc sql;
+select count(*) into: misscheck
+  from work.hashes
+  where file_hash is missing;
+
+%mp_assert(
+  iftrue=(&misscheck=1),
+  desc=Only one missing hash - the empty directory,
+  outds=work.test_results
+)
+
+data _null_;
+  set work.hashes;
+  if directory=file_path then call symputx('tophash',file_hash);
+run;
+
+%mp_assert(
+  iftrue=(%length(&tophash)=32),
+  desc=ensure valid top level hash created,
+  outds=work.test_results
+)
+
+/* now change a file and re-hash */
+data _null_;
+  file "&fpath/sub1/subsub/file1.txt" termstr=lf;
+  put "This file has changed!";
+run;
+
+%mp_hashdirectory(&fpath,outds=work.hashes2,maxdepth=MAX)
+
+data _null_;
+  set work.hashes2;
+  if directory=file_path then call symputx('tophash2',file_hash);
+run;
+
+%mp_assert(
+  iftrue=(&tophash ne &tophash2),
+  desc=ensure the changing of the hash results in a new value,
+  outds=work.test_results
+)
+
+/* now change it back and see if it matches */
+data _null_;
+  file "&fpath/sub1/subsub/file1.txt" termstr=lf;
+    put "This file is located at:";
+    put "&fpath/sub1/subsub";
+    put "and it is called:";
+    put "file1.txt";
+  run;
+run;
+
+%mp_hashdirectory(&fpath,outds=work.hashes3,maxdepth=MAX)
+
+data _null_;
+  set work.hashes3;
+  if directory=file_path then call symputx('tophash3',file_hash);
+run;
+
+%mp_assert(
+  iftrue=(&tophash=&tophash3),
+  desc=ensure the same files result in the same hash,
+  outds=work.test_results
+)
+
+/* dump contents for debugging */
+data _null_;
+  set work.hashes;
+  put file_hash file_path;
+run;
+data _null_;
+  set work.hashes2;
+  put file_hash file_path;
+run;
+
+/* check that it works when the target directory is missing */
+
+%mp_hashdirectory(&fpath/doesnotexist,outds=work.hashes3,maxdepth=MAX)
+
+%mp_assert(
+  iftrue=(&syscc=0),
+  desc=No errors when directory is missing,
+  outds=work.test_results
+)
+
+%mp_assert(
+  iftrue=(%mf_nobs(work.hashes3)=0),
+  desc=no records created when directory is missing,
+  outds=work.test_results
+)

viya/mfv_existsashdat.sas

@@ -0,0 +1,60 @@
+/**
+  @file mfv_existsashdat.sas
+  @brief Checks whether a CAS sashdat dataset exists in persistent storage.
+  @details Can be used in open code, eg as follows:
+
+      %if %mfv_existsashdat(libds=casuser.sometable) %then %put  yes it does!;
+
+  The function uses `dosubl()` to run the `table.fileinfo` action, for the
+  specified library, filtering for `*.sashdat` tables.  The results are stored
+  in a WORK table (&outprefix._&lib). If that table already exists, it is
+  queried instead, to avoid the dosubl() performance hit.
+
+  To force a rescan, just use a new `&outprefix` value, or delete the table(s)
+  before running the function.
+
+  @param libds library.dataset
+  @param outprefix= (work.mfv_existsashdat) Used to store the current HDATA
+    tables to improve subsequent query performance.  This reference is a prefix
+    and is converted to `&prefix._{libref}`
+
+  @return output returns 1 or 0
+
+  @version 0.2
+  @author Mathieu Blauw
+**/
+
+%macro mfv_existsashdat(libds,outprefix=work.mfv_existsashdat
+);
+%local rc dsid name lib ds;
+%let lib=%upcase(%scan(&libds,1,'.'));
+%let ds=%upcase(%scan(&libds,-1,'.'));
+
+/* if table does not exist, create it */
+%if %sysfunc(exist(&outprefix._&lib)) ne 1 %then %do;
+  %let rc=%sysfunc(dosubl(%nrstr(
+    /* Read in table list (once per &lib per session) */
+    proc cas;
+      table.fileinfo result=source_list /caslib="&lib";
+      val=findtable(source_list);
+      saveresult val dataout=&outprefix._&lib;
+    quit;
+    /* Only keep name, without file extension */
+    data &outprefix._&lib;
+      set &outprefix._&lib(where=(Name like '%.sashdat') keep=Name);
+      Name=upcase(scan(Name,1,'.'));
+    run;
+  )));
+%end;
+
+/* Scan table for hdat existence */
+%let dsid=%sysfunc(open(&outprefix._&lib(where=(name="&ds"))));
+%syscall set(dsid);
+%let rc = %sysfunc(fetch(&dsid));
+%let rc = %sysfunc(close(&dsid));
+
+/* Return result */
+%if "%trim(&name)"="%trim(&ds)" %then 1;
+%else 0;
+
+%mend mfv_existsashdat;