EPS (Private/Print) Data Splitter (Illustrator EPS 文档（打印/私密）数据分离器)

EPS Private-Print Data Splitter.py

'''
此脚本为 python3 版。
将 Illustrator EPS 文档分离为两个文件：
Private 文件为私密数据，用于 Illustrator 打开；
Print 文件为打印数据，用于置入其他程序，
注意不可用 Illustrator 打开，会导致失去响应。
'''

import re

def selectFile():
    '''利用win32ui选择文件对话框
    如果未安装此模块则弹窗输入路径'''
    
    try:
        import win32ui
        o = win32ui.CreateFileDialog( 1, ".eps", "", 0, "Adobe illustrator EPS Files (*.eps)|*.eps|")
        o.DoModal()
        return o.GetPathName()
    except Exception:
        path = input('Enter File Path: ')
        return re.sub('^"|"$', '', path)

def extractData(inputFile, dataType):
    '''获取(Private/Print)Data起始及终结位置
    据此读取相应EPS数据'''

    start = 0
    with open(inputFile, 'rb') as fobj:
        if dataType == 'Private':
            for line in fobj:
                if b'AI9_PrivateDataBegin' in line:
                    start = fobj.tell()
                if start and b'AI9_PrivateDataEnd' in line:
                    end = fobj.tell()
                    break
        else:
            for line in fobj:
                if b'%!PS-Adobe-3.1 EPSF-3.0' in line:
                    start = fobj.tell() - 25
                if b'%%EOF' in line:
                    end = fobj.tell()
                    break
        fobj.seek(start, 0)
        return fobj.read(end - start)

def writeEPS(inputFile, dataType):
    '''将数据写入文件'''

    outFile = re.sub(r'(?<=\\)([^\\]+)(?=\.eps)', lambda m: "%s_%s" % (m.group(1), dataType), inputFile, flags=re.IGNORECASE)
    data = extractData(inputFile, dataType)
    with open(outFile, 'wb') as fobj:
        fobj.write(data)

def main():
    inputFile = selectFile()
    writeEPS(inputFile, 'Private')
    writeEPS(inputFile, 'Print')


if __name__ == '__main__':
    main()

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