Get the command parameters in Win app and Console app

Usually one exe command is followed by some parameters, such as c:/dir /a; our application can process those parameters, both in win app and console app.

Indicate that all paremeters are Separated by space ' ';

 

// win mode: void ParseCommandLineArgs() {     CString strCmdLine = GetCommandLine();       if (!strCmdLine.IsEmpty())     {        // unify the letters        strCmdLine.MakeUpper();          int nPos = 0;        do {            nPos = strCmdLine.Find(TCHAR(' '));            if (nPos>0)            {               // remove the first parameter, it's usually the exe file path               strCmdLine.Delete( 0, nPos+1);               CString strCurrent = strCmdLine;               int nNextPos = strCmdLine.Find(TCHAR(' '));               // store the current parameter in strCurrent               if (nNextPos > 0)                   strCurrent = strCmdLine.Left( nNextPos );                   // process the parameter            }        } while( nPos != -1);     } }

 

console mode: (from open SSL Evp_text.c)

Indicate that all paremeters are Separated by space ':';

It’s also an easy script debugger.

// the delim is a stop character. // return the first part, // and terminate the string. static char *sstrsep(char **string, const char *delim) {     char isdelim[256]; // stop character table     char *token = *string;       if (**string == 0)        return NULL;       memset(isdelim, 0, 256);     isdelim[0] = 1;   // ‘/0’ is a end of string       // initial stop character table     while (*delim)     {        isdelim[(unsigned char)(*delim)] = 1;        delim++;     }       // begin check     while (!isdelim[(unsigned char)(**string)])     {        (*string)++;     }       // end the string by ‘/0’     if (**string)     {        **string = 0;        (*string)++;     }       return token; } // remove the warn information static unsigned char *ustrsep(char **p,const char *sep) { return (unsigned char *)sstrsep(p,sep); }   int _tmain(int argc, _TCHAR* argv[]) {     const char *szPara = argv[1];     for (int i = 0; i < argc; ++i) {          printf("para%d: %s /n",i, argv[i]);     }   // some examples easy explement of test script //# CBC-AES128.Encrypt and CBC-AES128.Decrypt //    AES-128-CBC:2B7E151628AED2A6ABF7158809CF4F3C:000102030405060708090A0B0C0D0E0F:6BC1BEE22E409F96E93D7E117393172A:7649ABAC8119B246CEE98E9B12E9197D       FILE *f=fopen(szPara,"r");     if(!f)        return 0;     // in a dead loop, we read every line of script     for (;;) {          char line[4096];        char *p;        char *cipher;        unsigned char *iv,*key,*plaintext,*ciphertext;        int encdec; // operation flag        int kn,in,pn,cn;          if(!fgets((char *)line,sizeof line,f))            break;        if(line[0] == '#' || line[0] == '/n')            continue;        p=line;        cipher=sstrsep(&p,":");         key=ustrsep(&p,":");        iv=ustrsep(&p,":");        plaintext=ustrsep(&p,":");        ciphertext=ustrsep(&p,":");        if (p[-1] == '/n') {            p[-1] = '/0';            encdec = -1;        } else {            encdec = atoi(sstrsep(&p,"/n"));        }     }     fclose(f);     return 0; }