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code/.venv/bin/hex2dump.py

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+#!/home/rhetenor/Projects/esp/python/.venv/bin/python
+
+# Copyright (c) 2008-2018 Alexander Belchenko
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms,
+# with or without modification, are permitted provided
+# that the following conditions are met:
+#
+# * Redistributions of source code must retain
+#   the above copyright notice, this list of conditions
+#   and the following disclaimer.
+# * Redistributions in binary form must reproduce
+#   the above copyright notice, this list of conditions
+#   and the following disclaimer in the documentation
+#   and/or other materials provided with the distribution.
+# * Neither the name of the author nor the names
+#   of its contributors may be used to endorse
+#   or promote products derived from this software
+#   without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+# BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+# OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Show content of hex file as hexdump."""
+
+VERSION = '2.3.0'
+
+USAGE = '''hex2dump: show content of hex file as hexdump.
+Usage:
+    python hex2dump.py [options] HEXFILE
+
+Options:
+    -h, --help              this help message.
+    -v, --version           version info.
+    -r, --range=START:END   specify address range for dumping
+                            (ascii hex value).
+                            Range can be in form 'START:' or ':END'.
+    --width=N               dump N data bytes per line (default: 16).
+
+Arguments:
+    HEXFILE     name of hex file for processing (use '-' to read
+                from stdin)
+'''
+
+import sys
+
+DEFAULT_WIDTH = 16
+
+def hex2dump(hexfile, start=None, end=None, width=DEFAULT_WIDTH):
+    import intelhex
+    if hexfile == '-':
+        hexfile = sys.stdin
+    try:
+        ih = intelhex.IntelHex(hexfile)
+    except (IOError, intelhex.IntelHexError):
+        e = sys.exc_info()[1]     # current exception
+        sys.stderr.write('Error reading file: %s\n' % e)
+        return 1
+    if not (start is None and end is None):
+        ih = ih[slice(start,end)]
+    ih.dump(tofile=sys.stdout, width=width)
+    return 0
+
+
+def main(argv=None):
+    import getopt
+
+    if argv is None:
+        argv = sys.argv[1:]
+
+    start = None
+    end = None
+    width = DEFAULT_WIDTH
+
+    try:
+        opts, args = getopt.getopt(sys.argv[1:], "hvp:r:",
+                                  ["help", "version", "range=", "width="])
+        for o, a in opts:
+            if o in ("-h", "--help"):
+                print(USAGE)
+                return 0
+            elif o in ("-v", "--version"):
+                print(VERSION)
+                return 0
+            elif o in ("-r", "--range"):
+                try:
+                    l = a.split(":")
+                    if l[0] != '':
+                        start = int(l[0], 16)
+                    if l[1] != '':
+                        end = int(l[1], 16)
+                except:
+                    raise getopt.GetoptError('Bad range value(s)')
+            elif o == "--width":
+                try:
+                    width = int(a)
+                    if width < 1:
+                        raise ValueError
+                except:
+                    raise getopt.GetoptError('Bad width value (%s)' % a)
+        if not args:
+            raise getopt.GetoptError('Hex file is not specified')
+        if len(args) > 1:
+            raise getopt.GetoptError('Too many arguments')
+    except getopt.GetoptError:
+        msg = sys.exc_info()[1]     # current exception
+        txt = 'ERROR: '+str(msg)  # that's required to get not-so-dumb result from 2to3 tool
+        print(txt)
+        print(USAGE)
+        return 2
+
+    try:
+        return hex2dump(args[0], start, end, width)
+    except IOError:
+        e = sys.exc_info()[1]     # current exception
+        import errno
+        if e.errno not in (0, errno.EPIPE):
+            raise
+
+
+if __name__ == '__main__':
+    import sys
+    sys.exit(main())