從用python自動生成.h的頭文件集合和類聲明集合到用python讀寫文件

最近在用python自動生成c++的類.因為這些類會根據需求不同產生不同的類,所以需要用python自動生成.由於會產生大量的類,而且這些類是變化的.所以如果是在某個.h中要用include來加載這些類,會累死人的.所以用python來生成這些類的頭文件引用和類的類名聲明

先看例子,再聊python的讀寫文件的代碼 在聊聊我的python代碼

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好吧.上面的圖就是面臨的需求

下面來聊聊從網上找的讀寫文件的python代碼吧.csdn的一個博主寫的很詳細.  python如何讀寫文件:http://blog.csdn.net/adupt/article/details/4435615

仔細閱讀完博主的講解后,有這么一段

file_object = open('thefile.txt')
try:
     all_the_text = file_object.read( )
finally:
     file_object.close( )

針對上面的這段代碼我會在來個說明 關於 try except finally with 等的帖子 <python中的 try except finally with>

恩.好了,下面把我的python代碼也就是實現最開始的截圖的代碼放這里 供自己以后類似的情況來參考

#!/usr/bin/python                                   #此文件是自動生成頭文件聲明的python腳本
# -*- encoding: utf-8 -*-
import os

def generateRecordsHeaderInclude(folderPath):
    
    try:
        filePath = os.path.join(folderPath,"misc_records.h")
        with open(filePath, "w") as file:
            recordsFolderPath = os.path.join(folderPath, 'records') #E:\fare_uuid\misc\include\misc\records  存放生成的類的.h
            includeNames = os.listdir(recordsFolderPath)  #獲取records文件夾下的所有文件名
            #寫c++代碼
            file.write("#ifndef MISC_MISC_RECORDS_H_\n")
            file.write("#define MISC_MISC_RECORDS_H_\n")
            file.write("\n//Records\n")
            
            for includeName in includeNames:
                file.write('#include "misc/records/%s"\n' % includeName)

            file.write("#endif /* MISC_MISC_RECORDS_H_ */") 
    except:
        print "create file %s\\misc_records.h error" % folderPath
        return

    print "create file %s\\misc_records.h success!" % folderPath
    
    

if __name__ == '__main__':
    homedir = r"E:\farestar_uuid\misc"   
    folderPath = os.path.join(homedir, 'include', 'misc')
    print 'folderPath = ' + folderPath
    
    generateRecordsHeaderInclude(folderPath)  #E:\farestar_uuid\misc\include\misc

 

#!/usr/bin/python                                       #此文件是自動生成c++類的類名聲明的python腳本
# -*- encoding: utf-8 -*-
import os

def getStructName(recFilePath, fwdFilePath):
    try:
        with open(recFilePath, 'r') as file:
            for line in file:
                if 'struct' in line and ': public MiscObject' in line:
                    words = line.split(" ")
                    structIndex = words.index('struct')    # 類名里面是    struct xxx : public MiscObject 所以讀到這一行的時候就拆解處 類名來
                    return words[structIndex+1]             
    except:
        print 'read %s error' % filePath
        print 'create %s error' % fwdFilePath
        raise RuntimeError("create %s error in genRecordsStructDeclare.py" % fwdFilePath)
        
    
def generateRecordsStructDeclare(folderPath):
    try:
        fwdFilePath = os.path.join(folderPath,"misc_fwd.h")  #類名聲明的頭文件
        with open(fwdFilePath, "w") as file:
            recordsFolderPath = os.path.join(folderPath, 'records')  #所以的類名的.h文件在records文件夾下
            recFileNames = os.listdir(recordsFolderPath)

            
            file.write("#ifndef MISC_MISC_FWD_H_\n")
            file.write("#define MISC_MISC_FWD_H_\n")

            file.write('#include "misc/miscid.h"\n')
            file.write('#include "misc/miscerrorcode.h"\n')
            file.write('namespace misc\n')
            file.write('{\n')
            for recFileName in recFileNames:
                recFilePath = os.path.join(recordsFolderPath, recFileName)  #xxxx/recors/agency.h
                structName = getStructName( recFilePath,  fwdFilePath)
                file.write('    struct %s;\n' % structName)  #生成一行類名聲明
            file.write('}\n')
            
            #file.write('#include "misc/records/%s"\n' % includeName)

            file.write("#endif /* MISC_MISC_FWD_H_ */") 
    except:
        print "create file %s error" % fwdFilePath
        return

    print "create file %s success!" % fwdFilePath
    
    

if __name__ == '__main__':
    homedir = r"E:\farestar_uuid\misc"
    folderPath = os.path.join(homedir, 'include', 'misc')
    print 'folderPath = ' + folderPath
    
    generateRecordsHeaderInclude(folderPath)