wrmdep: Added "update" option

Searches all the "src" and "application" directories of the project for
broken symbolic links for source code files and then remove all .dep
files that relate to the files that no longer exist.  Must be executed
in main project source code folder: $WM_PROJECT_DIR

Patch provided by Bruno Santos

Resolves feature-request http://www.openfoam.org/mantisbt/view.php?id=1941

wmake/wrmdep

@@ -24,13 +24,29 @@
 #
 # Script
 #     wrmdep [-a | -all | all] [file]
+#     wrmdep [-o | -old] [dir1 .. dirN]
+#     wrmdep -update
 #
 # Description
+#     This is a catch-all script for pruning .dep files, depending on the
+#     provided arguments.
+#
+#     [-a | -all | all] [file]:
 #     Remove all .dep files from the object directory tree corresponding to the
 #     current source derectory or remove only the .dep files referring to the
 #     optionally specified [file].  With the -a/-all/all option the .dep files
 #     are removed for all platforms rather than just the current platform.
 #
+#     [-o | -old] [dir1 .. dirN]:
+#     Remove *.dep files that are without a corresponding .C or .L source file.
+#     This often occurs when a directory has been moved.
+#         - print questionable directory and the *.dep file
+#
+#     -update:
+#     Search all the "src" and "application" directories of the project for
+#     broken symbolic links for source code files and then remove all .dep
+#     files that relate to files that no longer exist.
+#
 #------------------------------------------------------------------------------
 Script=${0##*/}
 
@@ -41,11 +57,28 @@ usage() {
     exec 1>&2
     while [ "$#" -ge 1 ]; do echo "$1"; shift; done
     cat<<USAGE
-Usage: $Script [-a | -all | all] [file]
+Usage:
+
+    $Script [-a | -all | all] [file]
+
+        Remove all .dep files or remove .dep files referring to <file>
+        With the -a/-all/all option the .dep files are removed for all
+        platform rather than just the current platform.
+
+    $Script [-o | -old] [dir1 .. dirN]
+
+        Remove *.dep files that are without a corresponding .C or .L file.
+        This often occurs when a directory has been moved.
+          - print questionable directory and file
+
+        Note: For removing empty source code folders, run: wclean rmdir
+
+    $Script -update
 
-Remove all .dep files or remove .dep files referring to <file>
-With the -a/-all/all option the .dep files are removed for all platform
-rather than just the current platform.
+        Search all the "src" and "application" directories of the project for
+        broken symbolic links for source code files and then remove all .dep
+        files that relate to files that no longer exist.
+        Must be executed in main project source code folder: $WM_PROJECT_DIR
 
 USAGE
     exit 1
@@ -56,6 +89,9 @@ USAGE
 # Parse arguments and options
 #------------------------------------------------------------------------------
 
+# Default is for removing all .dep files in the current directory
+rmdepMode="files"
+
 # Default to processing only the current platform
 all=
 
@@ -71,6 +107,14 @@ do
         all="all"
         shift
         ;;
+    -o | -old)
+        rmdepMode="oldFolders"
+        shift
+        ;;
+    -update)
+        rmdepMode="updateMode"
+        shift
+        ;;
     -*)
        usage "unknown option: '$*'"
        ;;
@@ -84,33 +128,96 @@ done
 checkEnv
 
 
-#------------------------------------------------------------------------------
-# Remove the selected .dep files from the object tree
-#------------------------------------------------------------------------------
+case "$rmdepMode" in
+files)
+
+    #-------------------------------------------------------------------------
+    # Remove the selected .dep files from the object tree
+    #-------------------------------------------------------------------------
+
+    findObjectDir .
+
+    # With the -a/-all option replace the current platform with a wildcard
+    if [ "$all" = "all" ]
+    then
+        objectsDir=$(echo $objectsDir | sed s%$WM_OPTIONS%*% )
+    fi
+
+    if [ "$#" -eq 0 ]
+    then
+        echo "removing all .dep files ..."
+        find $objectsDir -name '*.dep' -print | xargs -t rm 2>/dev/null
+    else
+        echo "removing .dep files referring to $1 ..."
+        find $objectsDir -name '*.dep' -exec grep "$1" '{}' \; \
+             -exec rm '{}' \;
+    fi
+
+    ;;
+
+oldFolders)
+
+    # Default is the current directory
+    [ "$#" -gt 0 ] || set -- .
+
+    for checkDir
+    do
+        findObjectDir $checkDir
+
+        if [ -d $objectsDir ]
+        then
+            echo "Searching: $objectsDir"
+        else
+            echo "Skipping non-dir: $objectsDir"
+            continue
+        fi
+
+        find $objectsDir -name '*.dep' -print | while read depFile
+        do
+            depToSource $depFile
+
+            # Check C++ or Flex source file exists
+            if [ ! -r "$sourceFile" ];
+            then
+                echo "rm $depFile"
+                rm -f $depFile 2>/dev/null
+            fi
+        done
+    done
+
+    ;;
+
+updateMode)
+
+    [ -d bin -a -d src ] || usage "not in the project top level directory"
+
+    echo "Purging all dep files that relate to files that no longer exist..."
+    fileNameList=$(find -L src applications -name '*.[CHL]' -type l \
+                        -exec basename {} \;)
+
+    for fileName in $fileNameList
+    do
+        echo "Purging from 'src': $fileName"
+        cd src
+        $Script -a $fileName
+
+        echo "Purging from 'applications': $fileName"
+        cd ../applications
+        $Script -a $fileName
 
-findObjectDir .
+        cd ..
+    done
 
-# With the -a/-all option replace the current platform with a wildcard
-if [ "$all" = "all" ]
-then
-    objectsDir=$(echo $objectsDir | sed s%$WM_OPTIONS%*% )
-fi
+    ;;
 
-if [ "$#" -eq 0 ]
-then
-    echo "removing all .dep files ..."
-    find $objectsDir -name '*.dep' -print | xargs -t rm 2>/dev/null
-else
-    echo "removing .dep files referring to $1 ..."
-    find $objectsDir -name '*.dep' -exec grep "$1" '{}' \; -exec rm '{}' \;
-fi
+esac
 
 
 #------------------------------------------------------------------------------
 # Cleanup local variables and functions
 #------------------------------------------------------------------------------
 
-unset Script usage
+unset Script usage rmdepMode all
 
 
 #------------------------------------------------------------------------------