Cocos2D-x file read I/O

The cocos2d-x provides the getfiledata interface as follows:

Char * file = (char *) ccfileutils: sharedfileutils ()-> getfiledata ("testjson. JSON", "r", & size );

Other methods are as follows:

With reference to other people's programs, the path is modified:

//string path = CCFileUtils::sharedFileUtils()->getWriteablePath()+pFileName ;string path = CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(pFileName.c_str());

Use fullpathfromrelativepath to check the name. It seems that you want to enter a relative path. In fact, you only need to enter a file name in the resource folder, and it will recognize the path of the file. So what you want to pass in is not a path, but a parameter. The official API documentation is misleading.

Const char * fullpathfromrelativepath

(

Const char *

Pszrelativepath

)

Generate the absolute path of the file.

Parameters

Pszrelativepath

The relative path of the file.

Returns

The absolute path of the file.

Warning

We only add the resourcepath before the relative path of the file.

Deprecated:

Please use fullpathforfilename instead.

//// Tdinvfileutils. h // mycoa2dtest /// created by Wei Zhu Quan on 13-2-27. /// # ifndef _ mycoa2dtest _ tdinvfileutils __# DEFINE _ mycocoa2dtest _ tdinvfileutils __# include <iostream> # include "cocos2d. H "using namespace cocos2d; using namespace STD;/** operation file storage and Reading */class ccreadfile {public:/** read local files, return data */static string getfilebyname (string pfilename);/** store the content to the file */static bool SaveFile (char * Pcontent, string pfilename );}; # endif/* defined (_ mycoa2dtest _ tdinvfileutils __)*/

//// Tdinvfileutils. CPP // mycoa2dtest /// created by Wei Zhu Quan on 13-2-27. //// # include "ccreadfile. H "string ccreadfile: getfilebyname (string pfilename) {// string Path = ccfileutils: sharedfileutils ()-> getwriteablepath () + pfilename; string Path = ccfileutils: sharedfileutils () -> fullpathfromrelativepath (pfilename. c_str (); cclog ("Path = % s", path. c_str (); file * file = fopen (path. c_str (), "R"); If (File) {C Har * Buf; int Len;/* Get length */fseek (file, 0, seek_end); // move to the end Len = ftell (File ); // extract the length rewind (File); // return to the in-situ cclog ("count the file content Len = % d", Len); // allocate Buf space Buf = (char *) malloc (sizeof (char) * Len + 1); If (! Buf) {cclog ("malloc space is not enough. "); return NULL;} // read the file // read into the Buf, unit size, length, file pointer int rlen = fread (BUF, sizeof (char), Len, file); Buf [rlen] = '\ 0'; cclog ("has read length = % d", rlen); cclog ("has read content = % s ", buf); string result = Buf; fclose (File); free (BUF); return result;} elsecclog ("Open File error. "); return NULL;} bool ccreadfile: SaveFile (char * Pcontent, string pfilename) {// obtain the stored file path string Path = ccfileutils: sharedfileutils () -> getwriteablepath () + pfilename; cclog ("wanna save File Path = % s", path. c_str (); // create a file pointer // path, mode file * file = fopen (path. c_str (), "W"); If (File) {fputs (Pcontent, file); fclose (File);} elsecclog ("save file error. "); Return false ;}