| 1 | #!/usr/bin/env python |
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| 2 | # -*- coding: utf-8 -*- |
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| 3 | # Copyright (C) 2008 Adriano Monteiro Marques |
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| 4 | # |
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| 5 | # Author: Francesco Piccinno <stack.box@gmail.com> |
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| 6 | # |
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| 7 | # This program is free software; you can redistribute it and/or modify |
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| 8 | # it under the terms of the GNU General Public License as published by |
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| 9 | # the Free Software Foundation; either version 2 of the License, or |
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| 10 | # (at your option) any later version. |
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| 11 | # |
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| 12 | # This program is distributed in the hope that it will be useful, |
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| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | # GNU General Public License for more details. |
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| 16 | # |
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| 17 | # You should have received a copy of the GNU General Public License |
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| 18 | # along with this program; if not, write to the Free Software |
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| 19 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 20 | |
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| 21 | import gtk |
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| 22 | import pango |
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| 23 | import gobject |
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| 24 | |
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| 25 | class BaseText(gtk.TextView): |
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| 26 | __gtype_name__ = "BaseText" |
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| 27 | |
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| 28 | def __init__(self, parent): |
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| 29 | self.buffer = gtk.TextBuffer(parent.table) |
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| 30 | gtk.TextView.__init__(self, self.buffer) |
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| 31 | |
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| 32 | self._parent = parent |
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| 33 | self.modify_font(pango.FontDescription(parent.font)) |
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| 34 | self.set_editable(False) |
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| 35 | |
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| 36 | gobject.type_register(BaseText) |
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| 37 | |
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| 38 | class OffsetText(BaseText): |
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| 39 | def __init__(self, parent): |
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| 40 | BaseText.__init__(self, parent) |
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| 41 | |
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| 42 | self.off_len = 1 |
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| 43 | self.connect('button-press-event', self.__on_button_press) |
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| 44 | self.connect('size-request', self.__on_size_request) |
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| 45 | self.connect('realize', self.__on_realize) |
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| 46 | |
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| 47 | self.set_cursor_visible(False) |
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| 48 | |
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| 49 | def __on_button_press(self, widget, evt): |
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| 50 | return True |
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| 51 | |
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| 52 | def __on_realize(self, widget): |
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| 53 | self.modify_base(gtk.STATE_NORMAL, self.style.dark[gtk.STATE_NORMAL]) |
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| 54 | |
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| 55 | def render(self, txt): |
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| 56 | self.buffer.set_text('') |
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| 57 | |
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| 58 | bpl = self._parent.bpl |
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| 59 | tot_lines = len(txt) / bpl |
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| 60 | |
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| 61 | if len(txt) % bpl != 0: |
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| 62 | tot_lines += 1 |
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| 63 | |
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| 64 | self.off_len = len(str(tot_lines)) + 1 |
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| 65 | output = [] |
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| 66 | |
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| 67 | for i in xrange(tot_lines): |
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| 68 | output.append(("%0" + str(self.off_len) + "d") % i) |
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| 69 | |
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| 70 | if output: |
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| 71 | self.buffer.insert_with_tags( |
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| 72 | self.buffer.get_end_iter(), |
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| 73 | "\n".join(output), |
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| 74 | self._parent.tag_offset |
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| 75 | ) |
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| 76 | |
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| 77 | def __on_size_request(self, widget, alloc): |
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| 78 | ctx = self.get_pango_context() |
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| 79 | font = ctx.load_font(pango.FontDescription(self._parent.font)) |
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| 80 | metric = font.get_metrics(ctx.get_language()) |
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| 81 | |
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| 82 | w = pango.PIXELS(metric.get_approximate_char_width()) * (self.off_len + 1) |
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| 83 | w += 2 |
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| 84 | |
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| 85 | if alloc.width < w: |
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| 86 | alloc.width = w |
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| 87 | |
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| 88 | class AsciiText(BaseText): |
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| 89 | _printable = """0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~""" |
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| 90 | |
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| 91 | def __init__(self, parent): |
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| 92 | BaseText.__init__(self, parent) |
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| 93 | self.connect('size-request', self.__on_size_request) |
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| 94 | |
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| 95 | self.prev_start = None |
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| 96 | self.prev_end = None |
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| 97 | |
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| 98 | def render(self, txt): |
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| 99 | self.buffer.set_text('') |
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| 100 | |
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| 101 | bpl = self._parent.bpl |
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| 102 | tot_lines = len(txt) / bpl |
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| 103 | |
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| 104 | if len(txt) % bpl != 0: |
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| 105 | tot_lines += 1 |
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| 106 | |
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| 107 | output = [] |
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| 108 | |
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| 109 | convert = lambda i: "".join( |
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| 110 | map(lambda x: (x in AsciiText._printable) and (x) or ('.'), list(i))) |
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| 111 | |
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| 112 | for i in xrange(tot_lines): |
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| 113 | to_fill = 0 |
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| 114 | |
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| 115 | if i * bpl + bpl > len(txt): |
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| 116 | to_fill = (i * bpl) + bpl - len(txt) |
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| 117 | output.append( |
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| 118 | convert(txt[i * bpl:]) |
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| 119 | ) |
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| 120 | else: |
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| 121 | output.append( |
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| 122 | convert(txt[i * bpl:(i * bpl) + bpl]) |
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| 123 | ) |
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| 124 | |
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| 125 | if output: |
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| 126 | self.buffer.insert_with_tags( |
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| 127 | self.buffer.get_end_iter(), |
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| 128 | "\n".join(output), |
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| 129 | self._parent.tag_ascii |
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| 130 | ) |
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| 131 | |
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| 132 | def __on_size_request(self, widget, alloc): |
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| 133 | ctx = self.get_pango_context() |
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| 134 | font = ctx.load_font(pango.FontDescription(self._parent.font)) |
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| 135 | metric = font.get_metrics(ctx.get_language()) |
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| 136 | |
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| 137 | w = pango.PIXELS(metric.get_approximate_char_width()) * self._parent.bpl |
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| 138 | w += 2 |
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| 139 | |
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| 140 | if alloc.width < w: |
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| 141 | alloc.width = w |
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| 142 | |
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| 143 | def select_blocks(self, start=None, end=None): |
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| 144 | if self.prev_start and self.prev_end and self.prev_start != self.prev_end: |
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| 145 | self.buffer.remove_tag(self._parent.tag_sec_sel, self.prev_start, self.prev_end) |
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| 146 | |
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| 147 | if not start and not end: |
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| 148 | return |
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| 149 | |
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| 150 | start_iter = self.buffer.get_iter_at_line(start / self._parent.bpl) |
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| 151 | start_iter.forward_chars(start % self._parent.bpl) |
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| 152 | |
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| 153 | end_iter = self.buffer.get_iter_at_line(end / self._parent.bpl) |
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| 154 | end_iter.forward_chars(end % self._parent.bpl) |
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| 155 | |
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| 156 | self.buffer.apply_tag(self._parent.tag_sec_sel, start_iter, end_iter) |
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| 157 | self.prev_start, self.prev_end = start_iter, end_iter |
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| 158 | |
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| 159 | |
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| 160 | class HexText(BaseText): |
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| 161 | def __init__(self, parent): |
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| 162 | BaseText.__init__(self, parent) |
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| 163 | self.connect('size-request', self.__on_size_request) |
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| 164 | self.connect('realize', self.__on_realize) |
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| 165 | |
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| 166 | self.prev_start = None |
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| 167 | self.prev_end = None |
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| 168 | |
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| 169 | def __on_realize(self, widget): |
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| 170 | self.modify_base(gtk.STATE_NORMAL, self.style.mid[gtk.STATE_NORMAL]) |
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| 171 | |
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| 172 | def render(self, txt): |
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| 173 | self.buffer.set_text('') |
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| 174 | |
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| 175 | bpl = self._parent.bpl |
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| 176 | tot_lines = len(txt) / bpl |
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| 177 | |
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| 178 | if len(txt) % bpl != 0: |
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| 179 | tot_lines += 1 |
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| 180 | |
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| 181 | output = [] |
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| 182 | convert = lambda x: (len(x) == 1) and ("0%s" % x) or (x) |
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| 183 | |
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| 184 | for i in xrange(tot_lines): |
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| 185 | to_fill = 0 |
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| 186 | |
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| 187 | if i * bpl + bpl > len(txt): |
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| 188 | to_fill = (i * bpl) + bpl - len(txt) |
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| 189 | output.append( |
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| 190 | " ".join(map(lambda x: convert(str(hex(ord(x)))[2:]), txt[i * bpl:])) |
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| 191 | ) |
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| 192 | else: |
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| 193 | output.append( |
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| 194 | " ".join(map(lambda x: convert(str(hex(ord(x)))[2:]), txt[i * bpl:(i * bpl) + bpl])) |
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| 195 | ) |
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| 196 | |
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| 197 | if output: |
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| 198 | self.buffer.insert_with_tags( |
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| 199 | self.buffer.get_end_iter(), |
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| 200 | "\n".join(output).upper(), |
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| 201 | self._parent.tag_hex |
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| 202 | ) |
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| 203 | |
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| 204 | def __on_size_request(self, widget, alloc): |
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| 205 | ctx = self.get_pango_context() |
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| 206 | font = ctx.load_font(pango.FontDescription(self._parent.font)) |
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| 207 | metric = font.get_metrics(ctx.get_language()) |
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| 208 | |
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| 209 | w = pango.PIXELS(metric.get_approximate_char_width()) * (self._parent.bpl * 3 - 1) |
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| 210 | w += 2 |
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| 211 | |
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| 212 | if alloc.width < w: |
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| 213 | alloc.width = w |
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| 214 | |
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| 215 | def select_blocks(self, start=None, end=None): |
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| 216 | if self.prev_start and self.prev_end and self.prev_start != self.prev_end: |
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| 217 | self.buffer.remove_tag(self._parent.tag_sec_sel, self.prev_start, self.prev_end) |
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| 218 | |
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| 219 | if not start and not end: |
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| 220 | return |
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| 221 | |
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| 222 | start_iter = self.buffer.get_iter_at_line(start / self._parent.bpl) |
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| 223 | start_iter.forward_chars(3 * (start % self._parent.bpl)) |
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| 224 | |
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| 225 | end_iter = self.buffer.get_iter_at_line(end / self._parent.bpl) |
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| 226 | end_iter.forward_chars(3 * (end % self._parent.bpl) - 1) |
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| 227 | |
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| 228 | self.buffer.apply_tag(self._parent.tag_sec_sel, start_iter, end_iter) |
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| 229 | self.prev_start, self.prev_end = start_iter, end_iter |
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| 230 | |
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| 231 | |
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| 232 | class HexView(gtk.HBox): |
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| 233 | __gtype_name__ = "HexView" |
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| 234 | |
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| 235 | def __init__(self): |
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| 236 | gtk.HBox.__init__(self, False, 4) |
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| 237 | self.set_border_width(4) |
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| 238 | |
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| 239 | self.table = gtk.TextTagTable() |
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| 240 | self.tag_offset = gtk.TextTag('hex-o-view') # offset view |
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| 241 | self.tag_hex = gtk.TextTag('hex-x-view') # hex view |
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| 242 | self.tag_ascii = gtk.TextTag('hex-a-view') # ascii view |
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| 243 | self.tag_sec_sel = gtk.TextTag('hex-s-selection') # secondary selection |
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| 244 | |
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| 245 | self.table.add(self.tag_offset) |
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| 246 | self.table.add(self.tag_hex) |
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| 247 | self.table.add(self.tag_ascii) |
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| 248 | self.table.add(self.tag_sec_sel) |
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| 249 | |
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| 250 | self._bpl = 16 |
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| 251 | self._font = "Monospace 10" |
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| 252 | self._payload = "" |
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| 253 | |
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| 254 | vadj, hadj = gtk.Adjustment(), gtk.Adjustment() |
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| 255 | self.vscroll = gtk.VScrollbar(vadj) |
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| 256 | |
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| 257 | self.offset_text = OffsetText(self) |
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| 258 | self.hex_text = HexText(self) |
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| 259 | self.ascii_text = AsciiText(self) |
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| 260 | |
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| 261 | self.offset_text.set_scroll_adjustments(hadj, vadj) |
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| 262 | self.hex_text.set_scroll_adjustments(hadj, vadj) |
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| 263 | self.ascii_text.set_scroll_adjustments(hadj, vadj) |
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| 264 | |
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| 265 | self.hex_text.buffer.connect('mark-set', self.__on_hex_change) |
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| 266 | self.ascii_text.buffer.connect('mark-set', self.__on_ascii_change) |
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| 267 | |
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| 268 | self.hex_text.connect('populate-popup', self.__on_menu_popup) |
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| 269 | self.ascii_text.connect('populate-popup', self.__on_menu_popup) |
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| 270 | |
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| 271 | def scroll(widget): |
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| 272 | widget.set_size_request(-1, 80) |
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| 273 | frame = gtk.Frame() |
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| 274 | frame.set_shadow_type(gtk.SHADOW_IN) |
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| 275 | frame.add(widget) |
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| 276 | return frame |
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| 277 | |
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| 278 | self.pack_start(scroll(self.offset_text), False, False) |
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| 279 | self.pack_start(scroll(self.hex_text), False, False) |
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| 280 | self.pack_start(scroll(self.ascii_text), False, False) |
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| 281 | self.pack_end(self.vscroll, False, False) |
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| 282 | |
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| 283 | def do_realize(self): |
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| 284 | gtk.HBox.do_realize(self) |
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| 285 | |
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| 286 | # Offset view |
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| 287 | self.tag_offset.set_property('weight', pango.WEIGHT_BOLD) |
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| 288 | |
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| 289 | # Hex View |
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| 290 | self.tag_hex.set_property( |
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| 291 | 'background-gdk', |
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| 292 | self.style.mid[gtk.STATE_NORMAL] |
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| 293 | ) |
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| 294 | |
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| 295 | # Selection tags |
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| 296 | self.tag_sec_sel.set_property( |
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| 297 | 'background-gdk', |
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| 298 | self.style.text_aa[gtk.STATE_NORMAL] |
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| 299 | ) |
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| 300 | |
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| 301 | def __on_menu_popup(self, widget, menu): |
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| 302 | item = gtk.SeparatorMenuItem() |
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| 303 | item.show() |
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| 304 | |
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| 305 | menu.append(item) |
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| 306 | |
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| 307 | action = gtk.Action('', 'Copy from both', '', gtk.STOCK_COPY) |
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| 308 | item = action.create_menu_item() |
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| 309 | item.connect('activate', self.__on_copy_from_both) |
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| 310 | |
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| 311 | menu.append(item) |
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| 312 | |
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| 313 | def __on_copy_from_both(self, widget): |
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| 314 | if self.hex_text.buffer.get_selection_bounds(): |
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| 315 | # Hex active |
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| 316 | |
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| 317 | start, end = self.hex_text.buffer.get_selection_bounds() |
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| 318 | txt = self.hex_text.buffer.get_text(start, end).replace("\n", " ") |
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| 319 | |
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| 320 | hex_s = filter(lambda x: len(x) == 2, txt.split(" ")) |
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| 321 | ascii = map(lambda x: chr(int(x, 16)), hex_s) |
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| 322 | |
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| 323 | extend = self.bpl - len(hex_s) % self.bpl |
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| 324 | |
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| 325 | hex_s.extend([" "] * extend) |
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| 326 | ascii.extend([" "] * extend) |
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| 327 | |
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| 328 | output = "" |
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| 329 | |
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| 330 | for i in xrange(len(hex_s) / self.bpl): |
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| 331 | output += "%s %s\n" % ( |
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| 332 | " ".join(hex_s[i * self.bpl:(i * self.bpl) + self.bpl]), |
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| 333 | "".join(ascii[i * self.bpl:(i * self.bpl) + self.bpl]) |
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| 334 | ) |
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| 335 | |
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| 336 | elif self.ascii_text.buffer.get_selection_bounds(): |
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| 337 | # Ascii active |
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| 338 | |
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| 339 | start, end = self.ascii_text.buffer.get_selection_bounds() |
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| 340 | ascii = list(self.ascii_text.buffer.get_text(start, end).replace("\n", "")) |
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| 341 | hex_s = map(lambda x: str(hex(ord(x)))[2:], ascii) |
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| 342 | |
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| 343 | extend = self.bpl - len(ascii) % self.bpl |
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| 344 | |
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| 345 | hex_s.extend([" "] * extend) |
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| 346 | ascii.extend([" "] * extend) |
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| 347 | |
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| 348 | output = "" |
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| 349 | |
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| 350 | for i in xrange(len(hex_s) / self.bpl): |
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| 351 | output += "%s %s\n" % ( |
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| 352 | " ".join(hex_s[i * self.bpl:i * self.bpl + self.bpl]), |
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| 353 | "".join(ascii[i * self.bpl:i * self.bpl + self.bpl]) |
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| 354 | ) |
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| 355 | |
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| 356 | def __on_hex_change(self, buffer, iter, mark): |
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| 357 | if not self.hex_text.buffer.get_selection_bounds(): |
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| 358 | self.ascii_text.select_blocks() # Deselect |
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| 359 | return |
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| 360 | |
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| 361 | start, end = buffer.get_selection_bounds() |
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| 362 | |
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| 363 | if start.get_line() == end.get_line(): |
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| 364 | tmp = buffer.get_iter_at_line(start.get_line()) |
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| 365 | txt = buffer.get_text(tmp, start) |
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| 366 | s_off = len(filter(lambda x: x != '', txt.split(" "))) |
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| 367 | |
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| 368 | txt = buffer.get_text(start, end) |
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| 369 | e_off = len(filter(lambda x: len(x) == 2, txt.split(" "))) |
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| 370 | |
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| 371 | self.ascii_text.select_blocks( |
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| 372 | (self.bpl * start.get_line()) + s_off, |
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| 373 | (self.bpl * start.get_line()) + s_off + e_off |
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| 374 | ) |
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| 375 | else: |
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| 376 | tmp = buffer.get_iter_at_line(start.get_line()) |
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| 377 | txt = buffer.get_text(tmp, start) |
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| 378 | s_off = len(filter(lambda x: x != '', txt.split(" "))) |
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| 379 | |
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| 380 | tmp = buffer.get_iter_at_line(end.get_line()) |
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| 381 | txt = buffer.get_text(tmp, end) |
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| 382 | e_off = len(filter(lambda x: len(x) == 2, txt.split(" "))) |
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| 383 | |
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| 384 | self.ascii_text.select_blocks( |
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| 385 | (self.bpl * start.get_line()) + s_off, |
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| 386 | (self.bpl * end.get_line()) + e_off |
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| 387 | ) |
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| 388 | |
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| 389 | def __on_ascii_change(self, buffer, iter, mark): |
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| 390 | if not self.ascii_text.buffer.get_selection_bounds(): |
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| 391 | self.hex_text.select_blocks() # Deselect |
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| 392 | return |
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| 393 | |
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| 394 | start, end = self.ascii_text.buffer.get_selection_bounds() |
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| 395 | self.hex_text.select_blocks( |
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| 396 | (self.bpl * start.get_line()) + start.get_line_index(), |
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| 397 | (self.bpl * end.get_line()) + end.get_line_index() |
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| 398 | ) |
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| 399 | |
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| 400 | def select_block(self, offset, len, ascii=True): |
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| 401 | """ |
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| 402 | Select a block of data in the HexView |
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| 403 | |
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| 404 | @param offset the offset byte |
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| 405 | @param len the lenght of selection |
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| 406 | @param ascii True to set primary selection on ASCII otherwise on HEX |
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| 407 | """ |
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| 408 | |
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| 409 | start = offset |
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| 410 | end = offset + len |
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| 411 | |
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| 412 | if start > end: |
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| 413 | start, end = end, start |
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| 414 | |
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| 415 | if ascii: |
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| 416 | # We need to get a fucking iter! |
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| 417 | buffer = self.ascii_text.get_buffer() |
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| 418 | start_iter = buffer.get_iter_at_offset(start) |
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| 419 | end_iter = buffer.get_iter_at_offset(end) |
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| 420 | |
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| 421 | buffer.select_range(end_iter, start_iter) |
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| 422 | |
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| 423 | def get_payload(self): |
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| 424 | return self._payload |
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| 425 | def set_payload(self, val): |
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| 426 | self._payload = val |
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| 427 | |
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| 428 | for view in (self.offset_text, self.hex_text, self.ascii_text): |
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| 429 | |
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| 430 | # Invalidate previous iters |
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| 431 | if hasattr(view, 'prev_start'): |
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| 432 | view.prev_start = None |
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| 433 | if hasattr(view, 'prev_end'): |
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| 434 | view.prev_end = None |
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| 435 | |
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| 436 | view.render(self._payload) |
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| 437 | |
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| 438 | def get_font(self): |
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| 439 | return self._font |
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| 440 | def modify_font(self, val): |
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| 441 | try: |
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| 442 | desc = pango.FontDescription(val) |
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| 443 | self._font = val |
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| 444 | |
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| 445 | for view in (self.offset_text, self.hex_text, self.ascii_text): |
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| 446 | view.modify_font(desc) |
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| 447 | except Exception: |
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| 448 | pass |
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| 449 | |
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| 450 | def get_bpl(self): |
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| 451 | return self._bpl |
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| 452 | def set_bpl(self, val): |
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| 453 | self._bpl = val |
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| 454 | |
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| 455 | # Redraw! |
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| 456 | self.payload = self.payload |
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| 457 | |
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| 458 | payload = property(get_payload, set_payload) |
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| 459 | font = property(get_font, modify_font) |
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| 460 | bpl = property(get_bpl, set_bpl) |
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| 461 | |
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| 462 | gobject.type_register(HexView) |
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| 463 | |
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| 464 | if __name__ == "__main__": |
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| 465 | w = gtk.Window() |
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| 466 | view = HexView() |
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| 467 | view.show_payload("Woo welcome this is a simple read/only" |
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| 468 | " HexView widget for PacketManipulator") |
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| 469 | w.add(view) |
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| 470 | w.show_all() |
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| 471 | w.connect('delete-event', lambda *w: gtk.main_quit()) |
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| 472 | gtk.main() |
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