93 lines
3.5 KiB
Nim
93 lines
3.5 KiB
Nim
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#
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# Copyright (c) 2016 Eugene Kabanov <ka@hardcore.kiev.ua>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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#
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from strutils import toHex, repeat
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proc dumpHex*(pbytes: pointer, nbytes: int, items = 1, ascii = true): string =
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## Return hexadecimal memory dump representation pointed by ``p``.
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## ``nbytes`` - number of bytes to show
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## ``items`` - number of bytes in group (supported ``items`` count is
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## 1, 2, 4, 8)
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## ``ascii`` - if ``true`` show ASCII representation of memory dump.
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result = ""
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let hexSize = items * 2
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var i = 0
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var slider = pbytes
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var asciiText = ""
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while i < nbytes:
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if i %% 16 == 0:
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result = result & toHex(cast[BiggestInt](slider),
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sizeof(BiggestInt) * 2) & ": "
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var k = 0
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while k < items:
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var ch = cast[ptr char](cast[uint](slider) + k.uint)[]
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if ord(ch) > 31 and ord(ch) < 127: asciiText &= ch else: asciiText &= "."
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inc(k)
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case items:
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of 1:
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result = result & toHex(cast[BiggestInt](cast[ptr uint8](slider)[]),
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hexSize)
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of 2:
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result = result & toHex(cast[BiggestInt](cast[ptr uint16](slider)[]),
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hexSize)
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of 4:
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result = result & toHex(cast[BiggestInt](cast[ptr uint32](slider)[]),
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hexSize)
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of 8:
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result = result & toHex(cast[BiggestInt](cast[ptr uint64](slider)[]),
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hexSize)
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else:
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raise newException(ValueError, "Wrong items size!")
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result = result & " "
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slider = cast[pointer](cast[uint](slider) + items.uint)
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i = i + items
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if i %% 16 == 0:
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result = result & " " & asciiText
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asciiText.setLen(0)
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result = result & "\n"
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if i %% 16 != 0:
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var spacesCount = ((16 - (i %% 16)) div items) * (hexSize + 1) + 1
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result = result & repeat(' ', spacesCount)
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result = result & asciiText
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result = result & "\n"
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proc dumpHex*[T](v: openarray[T], items: int = 0, ascii = true): string =
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## Return hexadecimal memory dump representation of openarray[T] ``v``.
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## ``items`` - number of bytes in group (supported ``items`` count is
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## 0, 1, 2, 4, 8). If ``items`` is ``0`` group size will depend on
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## ``sizeof(T)``.
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## ``ascii`` - if ``true`` show ASCII representation of memory dump.
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var i = 0
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if items == 0:
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when sizeof(T) == 2:
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i = 2
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elif sizeof(T) == 4:
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i = 4
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elif sizeof(T) == 8:
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i = 8
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else:
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i = 1
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else:
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i = items
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result = dumpHex(unsafeAddr v[0], sizeof(T) * len(v), i, ascii)
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