From c92707fece670689c9dd7470e35bdc802946dc45 Mon Sep 17 00:00:00 2001
From: Michael Vrhel <michael.vrhel@artifex.com>
Date: Wed, 22 Jun 2016 13:20:45 -0700
Subject: Add support for getting additional annotation information

GSView will make use of the details about the annotations including
the author, the date and which annotation the annotation is in
reply to.  This commit provides the interface to do this easily.
---
 include/mupdf/pdf/annot.h   | 17 ++++++++++++++++-
 resources/pdf/names.txt     |  2 ++
 source/pdf/pdf-annot-edit.c | 17 ++++++++++++++++-
 3 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/include/mupdf/pdf/annot.h b/include/mupdf/pdf/annot.h
index c648370c..beb100df 100644
--- a/include/mupdf/pdf/annot.h
+++ b/include/mupdf/pdf/annot.h
@@ -121,7 +121,22 @@ void pdf_set_annot_contents(fz_context *ctx, pdf_document *doc, pdf_annot *annot
 /*
 	pdf_annot_contents: return the contents of an annotation.
 */
-char *pdf_annot_contents(fz_context *ctx, pdf_document *doc, pdf_annot *annot);
+char *pdf_annot_contents(fz_context *ctx, pdf_annot *annot);
+
+/*
+	pdf_annot_author: return the author of an annotation.
+*/
+char *pdf_annot_author(fz_context *ctx, pdf_annot *annot);
+
+/*
+	pdf_annot_author: return the date of an annotation.
+*/
+char *pdf_annot_date(fz_context *ctx, pdf_annot *annot);
+
+/*
+	pdf_annot_irt: return the indirect reference that this annotation is in reply to.
+*/
+pdf_obj *pdf_annot_irt(fz_context *ctx, pdf_annot *annot);
 
 /*
 	pdf_set_free_text_details: set the position, text, font and color for a free text annotation.
diff --git a/resources/pdf/names.txt b/resources/pdf/names.txt
index ff63d99d..ff91055b 100644
--- a/resources/pdf/names.txt
+++ b/resources/pdf/names.txt
@@ -76,6 +76,7 @@ Contents
 Coords
 Count
 Cover
+CreationDate
 Creator
 CropBox
 Crypt
@@ -169,6 +170,7 @@ I
 ICCBased
 ID
 IM
+IRT
 Identity
 Identity-H
 Identity-V
diff --git a/source/pdf/pdf-annot-edit.c b/source/pdf/pdf-annot-edit.c
index 4d5d924c..d073a699 100644
--- a/source/pdf/pdf-annot-edit.c
+++ b/source/pdf/pdf-annot-edit.c
@@ -373,11 +373,26 @@ void pdf_set_annot_contents(fz_context *ctx, pdf_document *doc, pdf_annot *annot
 	pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_Contents, pdf_new_string(ctx, doc, text, strlen(text)));
 }
 
-char *pdf_annot_contents(fz_context *ctx, pdf_document *doc, pdf_annot *annot)
+char *pdf_annot_contents(fz_context *ctx, pdf_annot *annot)
 {
 	return pdf_to_str_buf(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_Contents));
 }
 
+char *pdf_annot_author(fz_context *ctx, pdf_annot *annot)
+{
+	return pdf_to_str_buf(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_T));
+}
+
+char *pdf_annot_date(fz_context *ctx, pdf_annot *annot)
+{
+	return pdf_to_str_buf(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_CreationDate));
+}
+
+pdf_obj *pdf_annot_irt(fz_context *ctx, pdf_annot *annot)
+{
+	return pdf_dict_get(ctx, annot->obj, PDF_NAME_IRT);
+}
+
 void pdf_set_free_text_details(fz_context *ctx, pdf_document *doc, pdf_annot *annot, fz_point *pos, char *text, char *font_name, float font_size, float color[3])
 {
 	char nbuf[32];
-- 
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