From: David Malcolm <dmalcolm@redhat.com>
Date: Mon, 16 Dec 2019 17:07:45 +0000 (+0000)
Subject: Add pp_write_text_as_html_like_dot_to_stream
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a326a3dedbff2c190418a28466946cac82295147;p=gcc.git

Add pp_write_text_as_html_like_dot_to_stream

gcc/ChangeLog:
	* pretty-print.c (pp_write_text_as_html_like_dot_to_stream): New
	function.
	* pretty-print.h (pp_write_text_as_html_like_dot_to_stream): New decl.

From-SVN: r279444
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8fa7cc49c30..d25666380cd 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-12-16  David Malcolm  <dmalcolm@redhat.com>
+
+	* pretty-print.c (pp_write_text_as_html_like_dot_to_stream): New
+	function.
+	* pretty-print.h (pp_write_text_as_html_like_dot_to_stream): New decl.
+
 2019-12-16  Segher Boessenkool  <segher@kernel.crashing.org>
 
 	* config/rs6000/rs6000.md (movsi_to_cr_one): Use CR0_REGNO instead of
diff --git a/gcc/pretty-print.c b/gcc/pretty-print.c
index 084e03c73c7..2ecb0343ba0 100644
--- a/gcc/pretty-print.c
+++ b/gcc/pretty-print.c
@@ -907,6 +907,54 @@ pp_write_text_as_dot_label_to_stream (pretty_printer *pp, bool for_record)
   pp_clear_output_area (pp);
 }
 
+/* As pp_write_text_to_stream, but for GraphViz HTML-like strings.
+
+   Flush the formatted text of pretty-printer PP onto the attached stream,
+   escaping these characters
+     " & < >
+   using XML escape sequences.
+
+   http://www.graphviz.org/doc/info/lang.html#html states:
+      special XML escape sequences for ", &, <, and > may be necessary in
+      order to embed these characters in attribute values or raw text
+   This doesn't list "'" (which would normally be escaped in XML
+   as "&apos;" or in HTML as "&#39;");.
+
+   Experiments show that escaping "'" doesn't seem to be necessary.  */
+
+void
+pp_write_text_as_html_like_dot_to_stream (pretty_printer *pp)
+{
+  const char *text = pp_formatted_text (pp);
+  const char *p = text;
+  FILE *fp = pp_buffer (pp)->stream;
+
+  for (;*p; p++)
+    {
+      switch (*p)
+	{
+	case '"':
+	  fputs ("&quot;", fp);
+	  break;
+	case '&':
+	  fputs ("&amp;", fp);
+	  break;
+	case '<':
+	  fputs ("&lt;", fp);
+	  break;
+	case '>':
+	  fputs ("&gt;",fp);
+	  break;
+
+	default:
+	  fputc (*p, fp);
+	  break;
+	}
+    }
+
+  pp_clear_output_area (pp);
+}
+
 /* Wrap a text delimited by START and END into PRETTY-PRINTER.  */
 static void
 pp_wrap_text (pretty_printer *pp, const char *start, const char *end)
diff --git a/gcc/pretty-print.h b/gcc/pretty-print.h
index 493507d4141..86b9e869eeb 100644
--- a/gcc/pretty-print.h
+++ b/gcc/pretty-print.h
@@ -393,8 +393,11 @@ extern void pp_indent (pretty_printer *);
 extern void pp_newline (pretty_printer *);
 extern void pp_character (pretty_printer *, int);
 extern void pp_string (pretty_printer *, const char *);
+
 extern void pp_write_text_to_stream (pretty_printer *);
 extern void pp_write_text_as_dot_label_to_stream (pretty_printer *, bool);
+extern void pp_write_text_as_html_like_dot_to_stream (pretty_printer *pp);
+
 extern void pp_maybe_space (pretty_printer *);
 
 extern void pp_begin_quote (pretty_printer *, bool);