From 7016a382b0dc48001cb5c36e56b42fc41b1303a8 Mon Sep 17 00:00:00 2001
From: Tom Tromey <tom@tromey.com>
Date: Thu, 30 Dec 2021 10:23:18 -0700
Subject: Add ui_file::wrap_here

Right now, wrap_here is a global function.  In the long run, we'd like
output streams to be relatively self-contained objects, and having a
global function like this is counter to that goal.  Also, existing
code freely mixes writes to some parameterized stream with calls to
wrap_here -- but wrap_here only really affects gdb_stdout, so this is
also incoherent.

This step is a patch toward making wrap_here more sane.  It adds a
wrap_here method to ui_file and changes ui_out implementations to use
it.
---
 gdb/cli-out.c   |  2 +-
 gdb/mi/mi-out.c |  2 +-
 gdb/ui-file.c   |  6 ++++++
 gdb/ui-file.h   | 17 +++++++++++++++++
 4 files changed, 25 insertions(+), 2 deletions(-)

(limited to 'gdb')

diff --git a/gdb/cli-out.c b/gdb/cli-out.c
index 925ba8a..b2daad1 100644
--- a/gdb/cli-out.c
+++ b/gdb/cli-out.c
@@ -243,7 +243,7 @@ cli_ui_out::do_wrap_hint (int indent)
   if (m_suppress_output)
     return;
 
-  wrap_here (indent);
+  m_streams.back ()->wrap_here (indent);
 }
 
 void
diff --git a/gdb/mi/mi-out.c b/gdb/mi/mi-out.c
index 72ae36d..53f7206 100644
--- a/gdb/mi/mi-out.c
+++ b/gdb/mi/mi-out.c
@@ -174,7 +174,7 @@ mi_ui_out::do_message (const ui_file_style &style,
 void
 mi_ui_out::do_wrap_hint (int indent)
 {
-  wrap_here (indent);
+  m_streams.back ()->wrap_here (indent);
 }
 
 void
diff --git a/gdb/ui-file.c b/gdb/ui-file.c
index d30ec04..57fc05a 100644
--- a/gdb/ui-file.c
+++ b/gdb/ui-file.c
@@ -131,6 +131,12 @@ ui_file::printchar (int c, int quoter, bool async_safe)
     this->write (buf, out);
 }
 
+void
+ui_file::wrap_here (int indent)
+{
+  ::wrap_here (indent);
+}
+
 
 
 void
diff --git a/gdb/ui-file.h b/gdb/ui-file.h
index 7c7b00d..3df9f93 100644
--- a/gdb/ui-file.h
+++ b/gdb/ui-file.h
@@ -107,6 +107,23 @@ public:
     return false;
   }
 
+  /* Indicate that if the next sequence of characters overflows the
+     line, a newline should be inserted here rather than when it hits
+     the end.  If INDENT is non-zero, it is a number of spaces to be
+     printed to indent the wrapped part on the next line.
+
+     If the line is already overfull, we immediately print a newline and
+     the indentation, and disable further wrapping.
+
+     If we don't know the width of lines, but we know the page height,
+     we must not wrap words, but should still keep track of newlines
+     that were explicitly printed.
+
+     This routine is guaranteed to force out any output which has been
+     squirreled away in the wrap_buffer, so wrap_here (0) can be
+     used to force out output from the wrap_buffer.  */
+  void wrap_here (int indent);
+
 private:
 
   /* Helper function for putstr and putstrn.  Print the character C on
-- 
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