From 62f29fda90cf1d5a1899f57ef78452471c707fd6 Mon Sep 17 00:00:00 2001
From: Tom Tromey <tom@tromey.com>
Date: Tue, 9 Oct 2018 22:21:05 -0600
Subject: Highlight source code using GNU Source Highlight

This changes gdb to highlight source using GNU Source Highlight, if it
is available.

This affects the output of the "list" command and also the TUI source
window.

No new test because I didn't see a way to make it work when Source
Highlight is not found.

gdb/ChangeLog
2018-12-28  Tom Tromey  <tom@tromey.com>

	* utils.h (can_emit_style_escape): Declare.
	* utils.c (can_emit_style_escape): No longer static.
	* cli/cli-style.c (set_style_enabled): New function.
	(_initialize_cli_style): Use it.
	* tui/tui-winsource.c (tui_show_source_line): Use tui_puts.
	(tui_alloc_source_buffer): Change how source lines are allocated.
	* tui/tui-source.c (copy_source_line): New function.
	(tui_set_source_content): Use source cache.
	* tui/tui-io.h (tui_puts): Update.
	* tui/tui-io.c (tui_puts_internal): Add window parameter.
	(tui_puts): Likewise.
	(tui_redisplay_readline): Update.
	* tui/tui-data.c (free_content_elements): Change how source window
	contents are freed.
	* source.c (forget_cached_source_info): Clear the source cache.
	(print_source_lines_base): Use the source cache.
	* source-cache.h: New file.
	* source-cache.c: New file.
	* configure.ac: Check for GNU Source Highlight library.
	* configure: Update.
	* config.in: Update.
	* Makefile.in (SRCHIGH_LIBS, SRCHIGH_CFLAGS): New variables.
	(INTERNAL_CFLAGS_BASE): Add SRCHIGH_CFLAGS.
	(CLIBS): Add SRCHIGH_LIBS.
	(COMMON_SFILES): Add source-cache.c.
	(HFILES_NO_SRCDIR): Add source-cache.h.
---
 gdb/configure | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

(limited to 'gdb/configure')

diff --git a/gdb/configure b/gdb/configure
index da701cd..9c99213 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -701,6 +701,8 @@ ALLOCA
 LTLIBIPT
 LIBIPT
 HAVE_LIBIPT
+SRCHIGH_CFLAGS
+SRCHIGH_LIBS
 HAVE_GUILE_FALSE
 HAVE_GUILE_TRUE
 GUILE_LIBS
@@ -11469,6 +11471,34 @@ else
 fi
 
 
+# ---------------------------- #
+# Check for source highlight.  #
+# ---------------------------- #
+
+SRCHIGH_LIBS=
+SRCHIGH_CFLAGS=
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for source highlight" >&5
+$as_echo_n "checking for source highlight... " >&6; }
+if test "${pkg_config_prog_path}" = "missing"; then
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no - pkg-config not found" >&5
+$as_echo "no - pkg-config not found" >&6; }
+else
+   if ${pkg_config_prog_path} --exists source-highlight; then
+      SRCHIGH_CFLAGS=`${pkg_config_prog_path} --cflags source-highlight`
+      SRCHIGH_LIBS=`${pkg_config_prog_path} --libs source-highlight`
+
+$as_echo "#define HAVE_SOURCE_HIGHLIGHT 1" >>confdefs.h
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+   else
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+   fi
+fi
+
+
+
 # --------------------- #
 # Check for libmcheck.  #
 # --------------------- #
-- 
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