create_snapshot_file Namespace Reference

Functions
	BuildOptions ()
	ProcessOptions (options)
	WriteBytesAsText (out, input_file)
	GenerateFileFromTemplate (output_file, input_cc_file, vm_isolate_input_file, isolate_input_file)
	Main ()

Variables
	HOST_OS = utils.GuessOS()
	HOST_CPUS = utils.GuessCpus()

Function Documentation

BuildOptions()

create_snapshot_file.BuildOptions

(

)

Definition at line 21 of file create_snapshot_file.py.

def BuildOptions():
    result = optparse.OptionParser()
    result.add_option(
        "--vm_input_bin",
        action="store",
        type="string",
        help="input file name of the vm isolate snapshot in binary form")
    result.add_option(
        "--input_bin",
        action="store",
        type="string",
        help="input file name of the isolate snapshot in binary form")
    result.add_option(
        "--input_cc",
        action="store",
        type="string",
        help="input file name which contains the C buffer template")
    result.add_option(
        "--output",
        action="store",
        type="string",
        help="output file name into which snapshot in C buffer form is generated"
    )
    result.add_option(
        "-v",
        "--verbose",
        help='Verbose output.',
        default=False,
        action="store_true")
    return result
 
 

GenerateFileFromTemplate()

create_snapshot_file.GenerateFileFromTemplate	(		output_file,
			input_cc_file,
			vm_isolate_input_file,
			isolate_input_file
	)

Generates C++ file based on a input_cc_file template and two binary files

Template is expected to have two %s placeholders which would be filled
with binary contents of the given files each formatted as a comma separated
list of integers.

Definition at line 89 of file create_snapshot_file.py.

                             isolate_input_file):
    """Generates C++ file based on a input_cc_file template and two binary files
 
  Template is expected to have two %s placeholders which would be filled
  with binary contents of the given files each formatted as a comma separated
  list of integers.
  """
    snapshot_cc_text = open(input_cc_file).read()
    chunks = snapshot_cc_text.split("%s")
    if len(chunks) != 3:
        raise Exception("Template %s should contain exactly two %%s occurrences"
                        % input_cc_file)
 
    with open(output_file, 'w') as out:
        out.write(chunks[0])
        WriteBytesAsText(out, vm_isolate_input_file)
        out.write(chunks[1])
        WriteBytesAsText(out, isolate_input_file)
        out.write(chunks[2])
 
 

Main()

create_snapshot_file.Main

(

)

Definition at line 111 of file create_snapshot_file.py.

def Main():
    # Parse options.
    parser = BuildOptions()
    (options, args) = parser.parse_args()
    if not ProcessOptions(options):
        parser.print_help()
        return 1
 
    # If there are additional arguments, report error and exit.
    if args:
        parser.print_help()
        return 1
 
    GenerateFileFromTemplate(options.output, options.input_cc,
                             options.vm_input_bin, options.input_bin)
 
    return 0
 
 

ProcessOptions()

create_snapshot_file.ProcessOptions

(

options

)

Definition at line 53 of file create_snapshot_file.py.

def ProcessOptions(options):
    if not options.vm_input_bin:
        sys.stderr.write('--vm_input_bin not specified\n')
        return False
    if not options.input_bin:
        sys.stderr.write('--input_bin not specified\n')
        return False
    if not options.input_cc:
        sys.stderr.write('--input_cc not specified\n')
        return False
    if not options.output:
        sys.stderr.write('--output not specified\n')
        return False
    return True
 
 

WriteBytesAsText()

create_snapshot_file.WriteBytesAsText	(		out,
			input_file
	)

Writes byte contents of the input_file into out file as text.

Output is formatted as a list of comma separated integer values - one value
for each byte.

Definition at line 69 of file create_snapshot_file.py.

def WriteBytesAsText(out, input_file):
    """Writes byte contents of the input_file into out file as text.
 
  Output is formatted as a list of comma separated integer values - one value
  for each byte.
  """
    with open(input_file, 'rb') as input:
        lineCounter = 0
        line = ' '
        for byte in input.read():
            line += ' %d,' % ord(byte)
            lineCounter += 1
            if lineCounter == 10:
                out.write(line + '\n')
                line = ' '
                lineCounter = 0
        if lineCounter != 0:
            out.write(line + '\n')
 
 

Variable Documentation

HOST_CPUS

create_snapshot_file.HOST_CPUS = utils.GuessCpus()

Definition at line 18 of file create_snapshot_file.py.

HOST_OS

create_snapshot_file.HOST_OS = utils.GuessOS()

Definition at line 17 of file create_snapshot_file.py.