New @N@@@ etc options

cpdf.ml

@@ -1317,40 +1317,6 @@ let get_bookmark_name pdf marks splitlevel n _ =
   | {Pdfmarks.text = title}::_ -> remove_unsafe_characters title
   | _ -> ""
 
-(* @F means filename without extension *)
-(* @N means sequence number with no padding *)
-(* @S means start page of this section *)
-(* @E means end page of this section *)
-(* @B means bookmark name at start page *)
-let process_others marks pdf splitlevel filename sequence startpage endpage s =
-  let rec procss prev = function
-    | [] -> rev prev
-    | '@'::'F'::t -> procss (rev (explode filename) @ prev) t
-    | '@'::'N'::t -> procss (rev (explode (string_of_int sequence)) @ prev) t
-    | '@'::'S'::t -> procss (rev (explode (string_of_int startpage)) @ prev) t
-    | '@'::'E'::t -> procss (rev (explode (string_of_int endpage)) @ prev) t
-    | '@'::'B'::t -> procss (rev (explode (get_bookmark_name pdf marks splitlevel startpage pdf)) @ prev) t
-    | h::t -> procss (h::prev) t
-  in
-     implode (procss [] (explode s))
-
-let name_of_spec marks (pdf : Pdf.t) splitlevel spec n filename startpage endpage =
-  let fill l n =
-    let chars = explode (string_of_int n) in
-      if length chars > l
-        then implode (drop chars (length chars - l))
-        else implode ((many '0' (l - length chars)) @ chars)
-  in
-    let chars = explode spec in
-      let before, including = cleavewhile (neq '%') chars in
-        let percents, after = cleavewhile (eq '%') including in
-          if percents = []
-            then
-              process_others marks pdf splitlevel filename n startpage endpage spec
-            else
-              process_others marks pdf splitlevel filename n startpage endpage
-              (implode before ^ fill (length percents) n ^ implode after)
-
 (* Find the stem of a filename *)
 let stem s =
   implode (rev (tail_no_fail (dropwhile (neq '.') (rev (explode (Filename.basename s))))))

cpdf.mli

@@ -80,22 +80,6 @@ val validate_pagespec : string -> bool
 
 val parse_pagespec_without_pdf : string -> int list
 
-(** [name_of_spec printf marks pdf splitlevel spec n filename startpage
-endpage] makes format substitutions in [spec] to make an output file name:
-
-{ul
-{- @F will be replaced by [filename]}
-{- @N will be replace by the current sequence number [n], [n+1] etc.}
-{- @S will be replace by the start page}
-{- @E will be replace by the end page}
-{- @B will be replace by the bookmark name in [marks] at the given level [splitlevel]}
-}
-[printf] is undocumented and should be set to [false].
-*)
-val name_of_spec : Pdfmarks.t list -> Pdf.t -> int -> string -> int -> string -> int -> int -> string
-
-(** {2 Compress and Decompress} *)
-
 (** Compresses all streams in the PDF document which are uncompressed, using
 /FlateDecode, leaving out metadata.  If the PDF is encrypted, does nothing. *)
 val recompress_pdf : Pdf.t -> Pdf.t

cpdfcommand.ml

@@ -2515,12 +2515,38 @@ let get_bookmark_name pdf marks splitlevel n _ =
 (* @E means end page of this section *)
 (* @B means bookmark name at start page *)
 let process_others marks pdf splitlevel filename sequence startpage endpage s =
+  let rec find_ats p = function
+    '@'::r -> find_ats (p + 1) r
+  | r -> (p, r)
+  in
+  let string_of_int_width w i =
+    if w < 0 then raise (Pdf.PDFError "width of field too narrow")
+    else if w > 8 then raise (Pdf.PDFError "width of field too broad") else
+      let formats =
+        [|format_of_string "%i";
+          format_of_string "%i";
+          format_of_string "%02i";
+          format_of_string "%03i";
+          format_of_string "%04i";
+          format_of_string "%05i";
+          format_of_string "%06i";
+          format_of_string "%07i";
+          format_of_string "%08i"|]
+      in
+        Printf.sprintf formats.(w) i
+  in
     let rec procss prev = function
       | [] -> rev prev
       | '@'::'F'::t -> procss (rev (explode filename) @ prev) t
-    | '@'::'N'::t -> procss (rev (explode (string_of_int sequence)) @ prev) t
+      | '@'::'N'::t ->
-    | '@'::'S'::t -> procss (rev (explode (string_of_int startpage)) @ prev) t
+          let width, rest = find_ats 0 t in
-    | '@'::'E'::t -> procss (rev (explode (string_of_int endpage)) @ prev) t
+            procss (rev (explode (string_of_int_width width sequence)) @ prev) rest
+      | '@'::'S'::t ->
+          let width, rest = find_ats 0 t in
+            procss (rev (explode (string_of_int_width width startpage)) @ prev) rest
+      | '@'::'E'::t ->
+          let width, rest = find_ats 0 t in
+            procss (rev (explode (string_of_int_width width endpage)) @ prev) rest
       | '@'::'B'::t -> procss (rev (explode (get_bookmark_name pdf marks splitlevel startpage pdf)) @ prev) t
       | h::t -> procss (h::prev) t
     in
@@ -2739,7 +2765,7 @@ let extract_images pdf range stem =
                (let names =
                  map
                    (function n ->
-                      let r = Cpdf.name_of_spec [] pdf 0 ("p" ^ string_of_int pnum ^ "_" ^ stem) n "" 0 0 in r)
+                      let r = name_of_spec [] pdf 0 ("p" ^ string_of_int pnum ^ "_" ^ stem) n "" 0 0 in r)
                    (indx images)
                in
                  iter2 (write_image pdf page.Pdfpage.resources) names images))
@@ -2758,7 +2784,6 @@ let getencryption pdf =
   | Some (Pdfwrite.AES256bitISO true) -> "256bit AES ISO, Metadata encrypted"
   | Some (Pdfwrite.AES256bitISO false) -> "256bit AES ISO, Metadata not encrypted"
 
-
 (* If a cropbox exists, make it the mediabox. If not, change nothing. *)
 let copy_cropbox_to_mediabox pdf range =
   Cpdf.process_pages

cpdfmanual.tex

@@ -16,6 +16,7 @@
 %FIXME: Document -remove-clipping
 %FIXME: Document new -list-spot-colours
 %FIXME: Document new -pad-multiple-before
+%FIXME: Document new @N@@@ @E@@@, @S@@@ options
 
 \documentclass{book}
 \usepackage{palatino}