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![Josh Soref](/assets/img/avatar_default.png)
Closes https://github.com/dart-lang/sdk/pull/50922 GitOrigin-RevId: 58fd7cfd5ef470a65a52ea28e0407244d853c917 Change-Id: I2e5a5ed991cb05270170a18b8f0169daa9eabdb7 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/278537 Reviewed-by: Alexander Thomas <athom@google.com> Commit-Queue: Alexander Thomas <athom@google.com>
132 lines
3.7 KiB
Python
Executable file
132 lines
3.7 KiB
Python
Executable file
#!/usr/bin/env python3
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#
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# Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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# for details. All rights reserved. Use of this source code is governed by a
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# BSD-style license that can be found in the LICENSE file.
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# Script to convert snapshot files to a C++ file which can be compiled and
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# linked together with VM binary.
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import getopt
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import optparse
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import string
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import subprocess
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import sys
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import utils
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HOST_OS = utils.GuessOS()
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HOST_CPUS = utils.GuessCpus()
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def BuildOptions():
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result = optparse.OptionParser()
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result.add_option(
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"--vm_input_bin",
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action="store",
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type="string",
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help="input file name of the vm isolate snapshot in binary form")
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result.add_option(
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"--input_bin",
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action="store",
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type="string",
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help="input file name of the isolate snapshot in binary form")
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result.add_option(
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"--input_cc",
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action="store",
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type="string",
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help="input file name which contains the C buffer template")
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result.add_option(
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"--output",
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action="store",
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type="string",
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help="output file name into which snapshot in C buffer form is generated"
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)
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result.add_option(
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"-v",
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"--verbose",
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help='Verbose output.',
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default=False,
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action="store_true")
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return result
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def ProcessOptions(options):
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if not options.vm_input_bin:
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sys.stderr.write('--vm_input_bin not specified\n')
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return False
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if not options.input_bin:
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sys.stderr.write('--input_bin not specified\n')
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return False
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if not options.input_cc:
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sys.stderr.write('--input_cc not specified\n')
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return False
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if not options.output:
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sys.stderr.write('--output not specified\n')
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return False
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return True
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def WriteBytesAsText(out, input_file):
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"""Writes byte contents of the input_file into out file as text.
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Output is formatted as a list of comma separated integer values - one value
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for each byte.
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"""
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with open(input_file, 'rb') as input:
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lineCounter = 0
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line = ' '
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for byte in input.read():
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line += ' %d,' % ord(byte)
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lineCounter += 1
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if lineCounter == 10:
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out.write(line + '\n')
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line = ' '
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lineCounter = 0
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if lineCounter != 0:
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out.write(line + '\n')
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def GenerateFileFromTemplate(output_file, input_cc_file, vm_isolate_input_file,
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isolate_input_file):
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"""Generates C++ file based on a input_cc_file template and two binary files
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Template is expected to have two %s placeholders which would be filled
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with binary contents of the given files each formatted as a comma separated
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list of integers.
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"""
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snapshot_cc_text = open(input_cc_file).read()
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chunks = snapshot_cc_text.split("%s")
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if len(chunks) != 3:
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raise Exception("Template %s should contain exactly two %%s occurrences"
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% input_cc_file)
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with open(output_file, 'w') as out:
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out.write(chunks[0])
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WriteBytesAsText(out, vm_isolate_input_file)
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out.write(chunks[1])
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WriteBytesAsText(out, isolate_input_file)
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out.write(chunks[2])
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def Main():
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# Parse options.
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parser = BuildOptions()
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(options, args) = parser.parse_args()
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if not ProcessOptions(options):
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parser.print_help()
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return 1
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# If there are additional arguments, report error and exit.
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if args:
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parser.print_help()
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return 1
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GenerateFileFromTemplate(options.output, options.input_cc,
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options.vm_input_bin, options.input_bin)
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return 0
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if __name__ == '__main__':
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sys.exit(Main())
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