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+! Copyright (c) 2022 Approximatrix, LLC <support@approximatrix.com>
+!
+! Permission is hereby granted, free of charge, to any person obtaining a copy
+! of this software and associated documentation files (the "Software"), to deal
+! in the Software without restriction, including without limitation the rights
+! to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+! copies of the Software, and to permit persons to whom the Software is
+! furnished to do so, subject to the following conditions:
+!
+! The above copyright notice and this permission notice shall be included in
+! all copies or substantial portions of the Software.
+!
+! The Software shall be used for Good, not Evil.
+!
+! THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+! IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+! FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+! AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+! LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+! OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+! SOFTWARE.
+
+program driver
+use fpoint_pptxzip
+implicit none
+
+    type(pptxtracted)::presentation
+    !character(len=*), parameter::filename = "Welcome to PowerPoint.pptx" !"samplepptx.pptx"
+    logical::verbose
+    logical::notes
+    integer::i, j
+    character(len=:), pointer::filename, arg
+    
+    if(command_argument_count() < 1) then
+        call usage()
+        call exit(0)
+    end if
+    
+    verbose = .false.
+    notes = .false.
+    filename => null()
+    do i = 1, command_argument_count()
+        
+        call get_command_argument(i, length=j)
+        allocate(character(len=j)::arg)
+        call get_command_argument(i, value=arg)
+        
+        if(arg == "-n") then
+            notes = .true.
+        
+        else if(arg == "-v") then
+            verbose = .true.
+            
+        else
+            filename => arg
+            arg => null()
+        
+        end if
+        
+        if(associated(arg)) then
+            deallocate(arg)
+            arg => null()
+        end if
+        
+    end do
+    
+    if(verbose) then
+        call title()
+    end if
+    call maybe_print(verbose, "Loading "//filename)
+    
+    if(presentation%open(filename)) then
+        
+        call maybe_print(verbose, "File opened at "//trim(presentation%directory))
+        
+        call presentation%parse()
+    
+        write(*, '(A)') presentation%to_text()
+    
+        call presentation%close()
+    
+    else
+        call maybe_print(verbose, "Failed on "//filename)
+        call exit(1)
+    end if
+    
+    call exit(0)
+    
+contains
+
+    subroutine title()
+    implicit none
+    
+        Print *, "FPoint - PowerPoint to Text Converter"
+        Print *, "Copyright 2022 Approximatrix, LLC"
+    
+    end subroutine title
+
+    subroutine usage()
+    implicit none
+    
+        character(512)::prg
+        
+        call get_command_argument(0, prg)
+        
+        call title()
+        
+        Print *, " "
+        Print *, "Usage: "//trim(prg)//" [options] <input filename>"
+        Print *, " "
+        Print *, "Options:"
+        Print *, " "
+        Print *, "    -n    Extract notes instead of slide contents"
+        Print *, "    -v    Be somewhat verbose, probably not enough to be interesting"
+        Print *, " "
+        Print *, "Output is printed to standard out"
+        Print *, " "
+        
+    end subroutine usage
+    
+    subroutine maybe_print(v, str)
+    implicit none
+        
+        logical, intent(in)::v
+        character(len=*), intent(in)::str
+        
+        if(v) then
+            Print *, str
+        end if
+    end subroutine maybe_print
+    
+end program driver
+    
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