pybootchartgui: Fix the filename and add a default format

* Fix teh output filename to make it easy to use
* Add a default output format (svg)
* Fix the usage message
* Fix the version to v1.0.0

Currently, the help messages are:

$ ./pybootchartgui.py --help
Usage: pybootchartgui.py [options] /path/to/tmp/buildstats/<recipe-machine>/<BUILDNAME>/

Options:
  --version             show program's version number and exit
  -h, --help            show this help message and exit
  -i, --interactive     start in active mode
  -f FORMAT, --format=FORMAT
                        image format: svg, pdf, png, [default: svg]
  -o PATH, --output=PATH
                        output path (file or directory) where charts are
                        stored
  -s NUM, --split=NUM   split the output chart into <NUM> charts, only works
                        with "-o PATH"
  -n, --no-prune        do not prune the process tree
  -q, --quiet           suppress informational messages
  --very-quiet          suppress all messages except errors
  --verbose             print all messages

[YOCTO #2403]

(From OE-Core rev: 138c2c31e41e3f1803b7efbedf78326d71821468)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/pybootchartgui/pybootchartgui/main.py

@@ -8,13 +8,13 @@ import batch
 
 def _mk_options_parser():
 	"""Make an options parser."""
-	usage = "%prog [options] PATH, ..., PATH"
+	usage = "%prog [options] /path/to/tmp/buildstats/<recipe-machine>/<BUILDNAME>/"
-	version = "%prog v0.0.0"
+	version = "%prog v1.0.0"
 	parser = optparse.OptionParser(usage, version=version)
 	parser.add_option("-i", "--interactive", action="store_true", dest="interactive", default=False, 
 			  help="start in active mode")
-	parser.add_option("-f", "--format", dest="format", default = None,
+	parser.add_option("-f", "--format", dest="format", default="svg", choices=["svg", "pdf", "png"],
-			  help="image format (...); default format ...")
+			  help="image format: svg, pdf, png, [default: %default]")
 	parser.add_option("-o", "--output", dest="output", metavar="PATH", default=None,
 			  help="output path (file or directory) where charts are stored")
 	parser.add_option("-s", "--split", dest="num", type=int, default=1,
@@ -29,20 +29,15 @@ def _mk_options_parser():
 			  help="print all messages")
 	return parser
 
-def _get_filename(paths, options):
+def _get_filename(path):
-	"""Construct a usable filename for outputs based on the paths and options given on the commandline."""
+	"""Construct a usable filename for outputs"""
-	dir = ""
+	dir = "."
 	file = "bootchart"
-	if options.output != None and not(os.path.isdir(options.output)):
+	if os.path.isdir(path):
-		return options.output
+		dir = path
-	if options.output != None:
+	elif path != None:
-		dir = options.output
+		file = path
-	if len(paths) == 1:
+	return os.path.join(dir, file)
-		if os.path.isdir(paths[0]):
-			file = os.path.split(paths[0])[-1]
-		elif os.path.splitext(paths[0])[1] in [".tar", ".tgz", ".tar.gz"]:
-			file = os.path.splitext(paths[0])[0]
-	return os.path.join(dir, file + "." + options.format)
 
 def main(argv=None):
 	try:
@@ -57,10 +52,10 @@ def main(argv=None):
 			return 2
 
 		res = parsing.parse(args, options.prune)
-		if options.interactive or options.format == None:
+		if options.interactive or options.output == None:
 			gui.show(res)
 		else:
-			filename = _get_filename(args, options)
+			filename = _get_filename(options.output)
 			res_list = parsing.split_res(res, options.num)
 			n = 1
 			for r in res_list: