Question

我目前正在使用Plistlib模块来读取Plist文件，但是当涉及二进制Plist文件时，我目前遇到了问题。

我想将数据读入一个字符串以便稍后进行分析/打印等。我想知道他们是否在不使用plutil函数并将二进制文件转换为XML的情况下读取二进制Plist文件？ / p>

感谢您的帮助和提前的时间。

Answer 1

虽然您没有指定plutil，但使用它的工作解决方案可能对其他人有用，因为它预先安装在Mac上：

import json
from subprocess import Popen, PIPE

def plist_to_dictionary(filename):
    "Pipe the binary plist through plutil and parse the JSON output"
    with open(filename, "rb") as f:
        content = f.read()
    args = ["plutil", "-convert", "json", "-o", "-", "--", "-"]
    p = Popen(args, stdin=PIPE, stdout=PIPE)
    out, err = p.communicate(content)
    return json.loads(out)

print plist_to_dictionary(path_to_plist_file)

Answer 2

Biplist https://github.com/wooster/biplist可通过easy-install或pip获得。

Answer 3

您可以使用工具plutil（来自http://www.libimobiledevice.org/的libplist）将二进制文件转换为xml plist文件（反之亦然）。

Answer 4

您可以查看CFBinaryPList.c源文件，了解它是如何在C中实现的。

根据文件，其格式如下：

HEADER
    magic number ("bplist")
    file format version (currently "0?")

OBJECT TABLE
    variable-sized objects

    Object Formats (marker byte followed by additional info in some cases)
    null    0000 0000           // null object [v"1?"+ only]
    bool    0000 1000           // false
    bool    0000 1001           // true
    url 0000 1100   string      // URL with no base URL, recursive encoding of URL string [v"1?"+ only]
    url 0000 1101   base string // URL with base URL, recursive encoding of base URL, then recursive encoding of URL string [v"1?"+ only]
    uuid    0000 1110           // 16-byte UUID [v"1?"+ only]
    fill    0000 1111           // fill byte
    int 0001 0nnn   ...     // # of bytes is 2^nnn, big-endian bytes
    real    0010 0nnn   ...     // # of bytes is 2^nnn, big-endian bytes
    date    0011 0011   ...     // 8 byte float follows, big-endian bytes
    data    0100 nnnn   [int]   ... // nnnn is number of bytes unless 1111 then int count follows, followed by bytes
    string  0101 nnnn   [int]   ... // ASCII string, nnnn is # of chars, else 1111 then int count, then bytes
    string  0110 nnnn   [int]   ... // Unicode string, nnnn is # of chars, else 1111 then int count, then big-endian 2-byte uint16_t
    string  0111 nnnn   [int]   ... // UTF8 string, nnnn is # of chars, else 1111 then int count, then bytes [v"1?"+ only]
    uid 1000 nnnn   ...     // nnnn+1 is # of bytes
        1001 xxxx           // unused
    array   1010 nnnn   [int]   objref* // nnnn is count, unless '1111', then int count follows
    ordset  1011 nnnn   [int]   objref* // nnnn is count, unless '1111', then int count follows [v"1?"+ only]
    set 1100 nnnn   [int]   objref* // nnnn is count, unless '1111', then int count follows [v"1?"+ only]
    dict    1101 nnnn   [int]   keyref* objref* // nnnn is count, unless '1111', then int count follows
        1110 xxxx           // unused
        1111 xxxx           // unused

OFFSET TABLE
    list of ints, byte size of which is given in trailer
    -- these are the byte offsets into the file
    -- number of these is in the trailer

TRAILER
    byte size of offset ints in offset table
    byte size of object refs in arrays and dicts
    number of offsets in offset table (also is number of objects)
    element # in offset table which is top level object
    offset table offset

使用Python读取二进制Plist文件

4 个答案: