more

cpdftexttopdf.ml

@@ -1,28 +1,35 @@
 open Pdfutil
 
-(* FIXME Make this use the charcode extractor for the font, because cpdftype
-   assumes charcodes. *)
-
-let rec of_utf8_with_newlines t =
+let rec of_utf8_with_newlines charcode_extractor t =
   let items = ref [] in
-  let buf = Buffer.create 256 in
-    String.iter
+  let buf = ref [] in
+  let codepoints = Pdftext.codepoints_of_utf8 t in
+  let charcodes_of_codepoints cs =
+    option_map
+      (fun u ->
+         match charcode_extractor u with
+         | Some c -> Some (char_of_int c)
+         | None -> Printf.printf "No glyph for unicode U+%04X in this font\n" u; None)
+      cs
+  in
+    List.iter
       (function
-       | '\n' ->
-           let c = Buffer.contents buf in
-             if c <> "" then items := Cpdftype.Text (explode c)::!items;
+       | 10 (*'\n'*) ->
+           let c = rev !buf in
+             if c <> [] then items := Cpdftype.Text (charcodes_of_codepoints c)::!items;
              items := Cpdftype.NewLine::!items;
-             Buffer.clear buf
-       | '\r' -> ()
+             buf := []
+       | 13 (*'\r'*) -> ()
        | x ->
-           Buffer.add_char buf x)
-      t;
+           buf := x::!buf)
+      codepoints;
     (* Do last one *)
-    let c = Buffer.contents buf in
-      if c <> "" then items := Text (explode c)::!items;
+    let c = rev !buf in
+      if c <> [] then items := Text (charcodes_of_codepoints c)::!items;
       rev !items
 
 let typeset ~papersize ~font ~fontsize text =
+  let charcode_extractor = Pdftext.charcode_extractor_of_font_real font in
   let pdf = Pdf.empty () in
   let margin =
     Pdfunits.convert
@@ -32,7 +39,7 @@ let typeset ~papersize ~font ~fontsize text =
     Cpdftype.typeset
       margin margin margin margin papersize pdf
       ([Cpdftype.Font (font, fontsize); Cpdftype.BeginDocument] @
-       of_utf8_with_newlines (Pdfio.string_of_bytes text))
+       of_utf8_with_newlines charcode_extractor (Pdfio.string_of_bytes text))
   in
     let pdf, pageroot = Pdfpage.add_pagetree pages pdf in
       Pdfpage.add_root pageroot [] pdf