initial attempt at a deletion tool

.gitea/workflows/mvs_job.yaml

@@ -31,7 +31,7 @@ jobs:
           nc -h
           echo "=== Debug: Setup complete ==="
 
-      - name: Find changed source files
+      - name: Find changed and deleted source files
         id: files
         run: |
           echo "=== Debug: Starting file detection ==="
@@ -41,13 +41,16 @@ jobs:
           if git rev-parse --verify HEAD~1 >/dev/null 2>&1; then
             echo "Parent commit exists; running git diff."
             CHANGED_FILES=$(git diff --name-only HEAD~1 2>/dev/null | grep -E '\.(c|bas)$' | head -1)
+            DELETED_FILES=$(git diff --name-only --diff-filter=D HEAD~1 2>/dev/null | grep -E '\.(c|bas)$')
             echo "Changed files from last commit: '${CHANGED_FILES}'"
+            echo "Deleted files from last commit: '${DELETED_FILES}'"
           else
             echo "No parent commit; skipping diff."
             CHANGED_FILES=""
+            DELETED_FILES=""
           fi
           echo "=== Debug: Git diff check complete ==="
-          
+
           # Fallback to all .c/.bas files if no changes or no previous commit
           if [ -z "$CHANGED_FILES" ]; then
             echo "=== Debug: No changes found; running fallback find ==="
@@ -56,22 +59,49 @@ jobs:
             echo "Fallback files (newest first): '${CHANGED_FILES}'"
             echo "=== Debug: Fallback complete ==="
           fi
-          
-          if [ -z "$CHANGED_FILES" ]; then
+
+          if [ -z "$CHANGED_FILES" ] && [ -z "$DELETED_FILES" ]; then
             echo "No C/BAS files found; skipping workflow."
             exit 0  # Graceful skip, no failure
           fi
-          
+
           echo "=== Debug: Processing final file ==="
           echo "Final selected file: '${CHANGED_FILES}'"
           echo "file=$CHANGED_FILES" >> $GITHUB_OUTPUT
-          
+
           # Extract member name (handle .c or .bas)
-          EXT="${CHANGED_FILES##*.}"
-          BASE=$(basename "$CHANGED_FILES" ".$EXT")
-          echo "member=$BASE" >> $GITHUB_OUTPUT
+          if [ -n "$CHANGED_FILES" ]; then
+            EXT="${CHANGED_FILES##*.}"
+            BASE=$(basename "$CHANGED_FILES" ".$EXT")
+            echo "member=$BASE" >> $GITHUB_OUTPUT
+          fi
+
+          # Process deleted files - convert to space-separated list of members
+          if [ -n "$DELETED_FILES" ]; then
+            DELETED_MEMBERS=""
+            for DFILE in $DELETED_FILES; do
+              DEXT="${DFILE##*.}"
+              DBASE=$(basename "$DFILE" ".$DEXT")
+              DELETED_MEMBERS="$DELETED_MEMBERS $DBASE"
+            done
+            echo "deleted_members=$DELETED_MEMBERS" >> $GITHUB_OUTPUT
+          fi
           echo "=== Debug: File detection complete ==="
 
+      - name: Delete removed members from PDS
+        if: ${{ steps.files.outputs.deleted_members != '' }}
+        run: |
+          echo "=== Debug: Starting deletion of removed members ==="
+          echo "Deleted members: ${{ steps.files.outputs.deleted_members }}"
+          for MEMBER in ${{ steps.files.outputs.deleted_members }}; do
+            echo "Deleting member: $MEMBER"
+            python3 delete_mvs_member.py "@05054.SRCLIB.C($MEMBER)"
+          done
+          echo "=== Debug: Deletion complete ==="
+        env:
+          MVS_BATCH_PASSWORD: ${{ vars.MVS_BATCH_PASSWORD }}
+          MVS_HOST: "oldcomputernerd.com"
+
       - name: Upload to PDS and Submit JCL
         if: ${{ steps.files.outputs.file != '' }}
         run: |

delete_mvs_member.py

@@ -0,0 +1,96 @@
+#!/usr/bin/env python3
+
+import sys
+import subprocess
+import tempfile
+import os
+
+# Force temp files into a folder inside your project
+custom_temp_dir = os.path.join(os.getcwd(), "tmp")
+os.makedirs(custom_temp_dir, exist_ok=True)
+tempfile.tempdir = custom_temp_dir
+
+MVSHOST = "oldcomputernerd.com"
+RDRPORT = 3505
+MVS_PASSWORD = os.environ.get("MVS_BATCH_PASSWORD")
+
+
+def create_delete_jcl(dataset_name, member_name):
+    """Create JCL to delete a PDS member using IEHPROGM"""
+
+    jcl = f"""
+//DELETE   JOB (ACCT),'DELETE',
+//             USER=@05054,PASSWORD={MVS_PASSWORD},
+//             CLASS=A,MSGCLASS=H,NOTIFY=@05054
+//DELMEM   EXEC PGM=IEHPROGM
+//SYSPRINT DD SYSOUT=*
+//DD1      DD DSN={dataset_name},DISP=SHR
+//SYSIN    DD *
+  DELETE DSNAME={dataset_name},MEMBER={member_name}
+/*
+"""
+    return jcl
+
+
+def delete_member(dataset_name, member_name, mvshost=MVSHOST):
+    """Delete a member from MVS PDS"""
+
+    payload = create_delete_jcl(dataset_name, member_name)
+
+    # Write JCL to temporary file and submit via netcat
+    with tempfile.NamedTemporaryFile(mode='w', delete=False, suffix='.jcl') as tmpfile:
+        tmpfile.write(payload)
+        tmpfile.flush()
+        tmpfile_path = tmpfile.name
+
+    try:
+        with open(tmpfile_path, 'rb') as f:
+            result = subprocess.run(
+                ['nc', '-w', '5', mvshost, str(RDRPORT)],
+                input=f.read(),
+                check=True,
+                capture_output=True
+            )
+        print(f"Deleted {dataset_name}({member_name})")
+        if result.stdout:
+            print("JES response:", result.stdout.decode(errors='ignore').strip())
+        return 0
+    except subprocess.CalledProcessError as e:
+        print(f"Deletion failed: {e}")
+        print("stderr:", e.stderr.decode(errors='ignore'))
+        return 1
+    finally:
+        os.unlink(tmpfile_path)
+
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print("Usage: delete_mvs_member.py <pds_destination> [mvshost]")
+        print()
+        print("Arguments:")
+        print("  pds_destination - PDS destination as DATASET(MEMBER) (required)")
+        print("  mvshost        - MVS host (optional, default: oldcomputernerd.com)")
+        print()
+        print("Examples:")
+        print("  delete_mvs_member.py '@05054.SRCLIB.C(SIEVE11)'")
+        print("  delete_mvs_member.py '@05054.SRCLIB.C(HELLO)' mainframe.example.com")
+        sys.exit(1)
+
+    destination = sys.argv[1]
+
+    # Parse PDS syntax: DATASET(MEMBER)
+    if '(' in destination and destination.endswith(')'):
+        dataset_name = destination[:destination.index('(')]
+        member_name = destination[destination.index('(')+1:-1]
+    else:
+        print(f"Error: Invalid PDS syntax '{destination}'. Use format: DATASET(MEMBER)")
+        sys.exit(1)
+
+    # Optional host override
+    mvshost = sys.argv[2] if len(sys.argv) > 2 else MVSHOST
+
+    print(f"Deleting: {dataset_name}({member_name})")
+    print(f"Host: {mvshost}")
+    print()
+
+    sys.exit(delete_member(dataset_name, member_name, mvshost))