I consider using colors in context of gcov as very useful. There's
example for tramp3d:
https://pste.eu/p/Tl2D.html
gcc/ChangeLog:
2017-10-23 Martin Liska <mli...@suse.cz>
* color-macros.h: New file.
* diagnostic-color.c: Factor out color related to macros to
color-macros.h.
* doc/gcov.texi: Document -k option.
* gcov.c (INCLUDE_STRING): Include string.h.
(print_usage): Add -k option.
(process_args): Parse it.
(pad_count_string): New function.
(output_line_beginning): Likewise.
(DEFAULT_LINE_START): New macro.
(output_lines): Support color output.
---
gcc/color-macros.h | 50 +++++++++++++++++++++++
gcc/diagnostic-color.c | 27 +------------
gcc/doc/gcov.texi | 9 +++++
gcc/gcov.c | 105 +++++++++++++++++++++++++++++++++++++++++--------
4 files changed, 148 insertions(+), 43 deletions(-)
create mode 100644 gcc/color-macros.h
diff --git a/gcc/color-macros.h b/gcc/color-macros.h
new file mode 100644
index 00000000000..b23cae49df7
--- /dev/null
+++ b/gcc/color-macros.h
@@ -0,0 +1,50 @@
+/* Terminal color manipulation macros.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_COLOR_MACROS_H
+#define GCC_COLOR_MACROS_H
+
+#define COLOR_SEPARATOR ";"
+#define COLOR_NONE "00"
+#define COLOR_BOLD "01"
+#define COLOR_UNDERSCORE "04"
+#define COLOR_BLINK "05"
+#define COLOR_REVERSE "07"
+#define COLOR_FG_BLACK "30"
+#define COLOR_FG_RED "31"
+#define COLOR_FG_GREEN "32"
+#define COLOR_FG_YELLOW "33"
+#define COLOR_FG_BLUE "34"
+#define COLOR_FG_MAGENTA "35"
+#define COLOR_FG_CYAN "36"
+#define COLOR_FG_WHITE "37"
+#define COLOR_BG_BLACK "40"
+#define COLOR_BG_RED "41"
+#define COLOR_BG_GREEN "42"
+#define COLOR_BG_YELLOW "43"
+#define COLOR_BG_BLUE "44"
+#define COLOR_BG_MAGENTA "45"
+#define COLOR_BG_CYAN "46"
+#define COLOR_BG_WHITE "47"
+#define SGR_START "\33["
+#define SGR_END "m\33[K"
+#define SGR_SEQ(str) SGR_START str SGR_END
+#define SGR_RESET SGR_SEQ("")
+
+#endif /* GCC_COLOR_MACROS_H */
diff --git a/gcc/diagnostic-color.c b/gcc/diagnostic-color.c
index b8cf6f2c045..0ee4bb287e0 100644
--- a/gcc/diagnostic-color.c
+++ b/gcc/diagnostic-color.c
@@ -81,32 +81,7 @@
It would be impractical for GCC to become a full-fledged
terminal program linked against ncurses or the like, so it will
not detect terminfo(5) capabilities. */
-#define COLOR_SEPARATOR ";"
-#define COLOR_NONE "00"
-#define COLOR_BOLD "01"
-#define COLOR_UNDERSCORE "04"
-#define COLOR_BLINK "05"
-#define COLOR_REVERSE "07"
-#define COLOR_FG_BLACK "30"
-#define COLOR_FG_RED "31"
-#define COLOR_FG_GREEN "32"
-#define COLOR_FG_YELLOW "33"
-#define COLOR_FG_BLUE "34"
-#define COLOR_FG_MAGENTA "35"
-#define COLOR_FG_CYAN "36"
-#define COLOR_FG_WHITE "37"
-#define COLOR_BG_BLACK "40"
-#define COLOR_BG_RED "41"
-#define COLOR_BG_GREEN "42"
-#define COLOR_BG_YELLOW "43"
-#define COLOR_BG_BLUE "44"
-#define COLOR_BG_MAGENTA "45"
-#define COLOR_BG_CYAN "46"
-#define COLOR_BG_WHITE "47"
-#define SGR_START "\33["
-#define SGR_END "m\33[K"
-#define SGR_SEQ(str) SGR_START str SGR_END
-#define SGR_RESET SGR_SEQ("")
+#include "color-macros.h"
/* The context and logic for choosing default --color screen attributes
diff --git a/gcc/doc/gcov.texi b/gcc/doc/gcov.texi
index c527b89f13b..2aa7166e35d 100644
--- a/gcc/doc/gcov.texi
+++ b/gcc/doc/gcov.texi
@@ -125,6 +125,7 @@ gcov [@option{-v}|@option{--version}]
[@option{-h}|@option{--help}]
[@option{-d}|@option{--display-progress}]
[@option{-f}|@option{--function-summaries}]
[@option{-i}|@option{--intermediate-format}]
+ [@option{-k}|@option{--use-colors}]
[@option{-l}|@option{--long-file-names}]
[@option{-m}|@option{--demangled-names}]
[@option{-n}|@option{--no-output}]
@@ -215,6 +216,14 @@ lcount:26,1
branch:28,nottaken
@end smallexample
+@item -k
+@itemx --use-colors
+
+Use colors for lines of code that have zero coverage. We use red color for
+non-exceptional lines and cyan for exceptional. Same colors are used for
+basic blocks with @option{-a} option.
+
+
@item -l
@itemx --long-file-names
Create long file names for included source files. For example, if the
diff --git a/gcc/gcov.c b/gcc/gcov.c
index c56bac20278..e53bcf0fd88 100644
--- a/gcc/gcov.c
+++ b/gcc/gcov.c
@@ -33,6 +33,7 @@ along with Gcov; see the file COPYING3. If not see
#include "config.h"
#define INCLUDE_ALGORITHM
#define INCLUDE_VECTOR
+#define INCLUDE_STRING
#include "system.h"
#include "coretypes.h"
#include "tm.h"
@@ -40,6 +41,7 @@ along with Gcov; see the file COPYING3. If not see
#include "diagnostic.h"
#include "version.h"
#include "demangle.h"
+#include "color-macros.h"
#include <getopt.h>
@@ -381,6 +383,10 @@ static int flag_hash_filenames = 0;
static int flag_verbose = 0;
+/* Print colored output. */
+
+static int flag_use_colors = 0;
+
/* Output count information for every basic block, not merely those
that contain line number information. */
@@ -703,6 +709,7 @@ print_usage (int error_p)
fnotice (file, " -f, --function-summaries Output summaries for each
function\n");
fnotice (file, " -h, --help Print this help, then
exit\n");
fnotice (file, " -i, --intermediate-format Output .gcov file in
intermediate text format\n");
+ fnotice (file, " -k, --use-colors Emit colored output\n");
fnotice (file, " -l, --long-file-names Use long output file names
for included\n\
source files\n");
fnotice (file, " -m, --demangled-names Output demangled function
names\n");
@@ -756,6 +763,7 @@ static const struct option options[] =
{ "unconditional-branches", no_argument, NULL, 'u' },
{ "display-progress", no_argument, NULL, 'd' },
{ "hash-filenames", no_argument, NULL, 'x' },
+ { "use-colors", no_argument, NULL, 'k' },
{ 0, 0, 0, 0 }
};
@@ -766,7 +774,7 @@ process_args (int argc, char **argv)
{
int opt;
- const char *opts = "abcdfhilmno:prs:uvwx";
+ const char *opts = "abcdfhiklmno:prs:uvwx";
while ((opt = getopt_long (argc, argv, opts, options, NULL)) != -1)
{
switch (opt)
@@ -789,6 +797,9 @@ process_args (int argc, char **argv)
case 'l':
flag_long_names = 1;
break;
+ case 'k':
+ flag_use_colors = 1;
+ break;
case 'm':
flag_demangled_names = 1;
break;
@@ -2468,6 +2479,65 @@ read_line (FILE *file)
return pos ? string : NULL;
}
+/* Pad string S with spaces from left to have total width equal to 9. */
+
+static void
+pad_count_string (string &s)
+{
+ if (s.size () < 9)
+ s.insert (0, 9 - s.size (), ' ');
+}
+
+/* Print GCOV line beginning to F stream. If EXISTS is set to true, the
+ line exists in source file. UNEXCEPTIONAL indicated that it's not in
+ an exceptional statement. The output is printed for LINE_NUM of given
+ COUNT of executions. EXCEPTIONAL_STRING and UNEXCEPTIONAL_STRING are
+ used to indicate non-executed blocks. */
+
+static void
+output_line_beginning (FILE *f, bool exists, bool unexceptional,
+ gcov_type count, unsigned line_num,
+ const char *exceptional_string,
+ const char *unexceptional_string)
+{
+ string s;
+ if (exists)
+ {
+ if (count > 0)
+ {
+ s = format_gcov (count, 0, -1);
+ pad_count_string (s);
+ }
+ else
+ {
+ if (flag_use_colors)
+ {
+ s = "0";
+ pad_count_string (s);
+ if (unexceptional)
+ s.insert (0, SGR_SEQ (COLOR_BG_RED
+ COLOR_SEPARATOR COLOR_FG_WHITE));
+ else
+ s.insert (0, SGR_SEQ (COLOR_BG_CYAN
+ COLOR_SEPARATOR COLOR_FG_WHITE));
+ s += SGR_RESET;
+ }
+ else
+ {
+ s = unexceptional ? unexceptional_string : exceptional_string;
+ pad_count_string (s);
+ }
+ }
+ }
+ else
+ {
+ s = "-";
+ pad_count_string (s);
+ }
+
+ fprintf (f, "%s:%5u", s.c_str (), line_num);
+}
+
/* Read in the source file one line at a time, and output that line to
the gcov file preceded by its execution count and other
information. */
@@ -2475,21 +2545,23 @@ read_line (FILE *file)
static void
output_lines (FILE *gcov_file, const source_t *src)
{
+#define DEFAULT_LINE_START " -: 0:"
+
FILE *source_file;
unsigned line_num; /* current line number. */
const line_t *line; /* current line info ptr. */
const char *retval = ""; /* status of source file reading. */
function_t *fn = NULL;
- fprintf (gcov_file, "%9s:%5d:Source:%s\n", "-", 0, src->coverage.name);
+ fprintf (gcov_file, DEFAULT_LINE_START "Source:%s\n", src->coverage.name);
if (!multiple_files)
{
- fprintf (gcov_file, "%9s:%5d:Graph:%s\n", "-", 0, bbg_file_name);
- fprintf (gcov_file, "%9s:%5d:Data:%s\n", "-", 0,
+ fprintf (gcov_file, DEFAULT_LINE_START "Graph:%s\n", bbg_file_name);
+ fprintf (gcov_file, DEFAULT_LINE_START "Data:%s\n",
no_data_file ? "-" : da_file_name);
- fprintf (gcov_file, "%9s:%5d:Runs:%u\n", "-", 0, object_runs);
+ fprintf (gcov_file, DEFAULT_LINE_START "Runs:%u\n", object_runs);
}
- fprintf (gcov_file, "%9s:%5d:Programs:%u\n", "-", 0, program_count);
+ fprintf (gcov_file, DEFAULT_LINE_START "Programs:%u\n", program_count);
source_file = fopen (src->name, "r");
if (!source_file)
@@ -2498,7 +2570,7 @@ output_lines (FILE *gcov_file, const source_t *src)
retval = NULL;
}
else if (src->file_time == 0)
- fprintf (gcov_file, "%9s:%5d:Source is newer than graph\n", "-", 0);
+ fprintf (gcov_file, DEFAULT_LINE_START "Source is newer than graph\n");
if (flag_branches)
fn = src->functions;
@@ -2537,11 +2609,10 @@ output_lines (FILE *gcov_file, const source_t *src)
Otherwise, print the execution count before the source line.
There are 16 spaces of indentation added before the source
line so that tabs won't be messed up. */
- fprintf (gcov_file, "%9s:%5u:%s\n",
- !line->exists ? "-" : line->count
- ? format_gcov (line->count, 0, -1)
- : line->unexceptional ? "#####" : "=====", line_num,
- retval ? retval : "/*EOF*/");
+ output_line_beginning (gcov_file, line->exists, line->unexceptional,
+ line->count, line_num,
+ "=====", "#####");
+ fprintf (gcov_file, ":%s\n", retval ? retval : "/*EOF*/");
if (flag_all_blocks)
{
@@ -2554,11 +2625,11 @@ output_lines (FILE *gcov_file, const source_t *src)
{
if (!block->is_call_return)
{
- fprintf (gcov_file, "%9s:%5u-block %2d",
- !line->exists ? "-" : block->count
- ? format_gcov (block->count, 0, -1)
- : block->exceptional ? "%%%%%" : "$$$$$",
- line_num, ix++);
+ output_line_beginning (gcov_file, line->exists,
+ block->exceptional,
+ block->count, line_num,
+ "%%%%%", "$$$$$");
+ fprintf (gcov_file, "-block %2d", ix++);
if (flag_verbose)
fprintf (gcov_file, " (BB %u)", block->id);
fprintf (gcov_file, "\n");
--
2.14.2
