xoonips/AL/common.cc

/*
 * Abstract Layer????罘??純?????鋎帥???∽?違???????у?臂?????鐚?/span>
 * 
 * $Revision: 1.4 $
 * $Log: common.cc,v $
 * Revision 1.4  2005/01/06 07:17:15  youi
 * VC toolkit篏睡??????nprintf??fltused???臂???菴遵??.
 *
 * Revision 1.3  2004/11/26 05:13:40  aga
 * ??serid_t, groupid_t??unsigned int ??信罩?
 * ??nsignedIntToString()??篏???.
 *
 * Revision 1.2  2004/11/26 03:29:43  aga
 * ??ntToString()??篏???.
 *
 * Revision 1.1  2004/11/22 08:25:16  youi
 * initial version.
 *
 * 
 */

#include <stdio.h>
#include <string.h>
#include "common.h"

#if defined(_MSC_VER)
#define snprintf _snprintf
int _fltused = 0x9875;
#endif

/**
 * 
 * data??D5????激?ュ?ゃ??羆???鐚???絖??????????鐚???絎?????????絖???????????/span>
 * str???吾??莨若??.
 * 
 * 
 * 
 */
char* md5str( char str[MD5_DIGEST_STRING_LENGTH], unsigned char* data, int len )
{
    MD5_CTX c;
    unsigned char buf[MD5_DIGEST_LENGTH];
    static const char hexdigit[]="0123456789abcdef";
    
    MD5_Init( &c );
    MD5_Update( &c, data, len );
    MD5_Final( buf, &c );
    
    for( int i = 0 ; i < MD5_DIGEST_LENGTH ; i++ ){
        str[i*2] = hexdigit[buf[i]>>4];
        str[i*2+1] = hexdigit[buf[i] & 0x0f];
    }
    str[MD5_DIGEST_LENGTH*2] = '\0';
    return str;
}

/**
 * 
 * 筝???????????絖?????茲?茖純??鐚??????≪?????鴻??菴???鐚?/span>
 * 
 * @param text 
 * @return 茲?茖純??????絖??????≪??????/span>
 * @return 0 茲?茖純??け??
 * 
 */
char* str_dup( const char* text )
{
    if( text == 0 ) return 0;
    char* ptr = new char[ strlen( text ) + 1 ];
    if( ptr == 0 ) return 0;
    strcpy( ptr , text );
    return ptr;
}

/**
 * 
 * newtext?ф??絎?????????絖?????茲?茖純??鐚??????≪?????鴻??*dstptr??撮?ャ????.<br>
 * ??????????鐚??????障??dstptr?????с??????????????茹ｆ?障????.<br>
 * ??筝??уけ???????翫????dstptr????絎鴻???吾??????????????鐚?lt;br>
 * newtext==0?????????*dstptr?????с??????????茹ｆ?障??鐚?腥堺??絖????域???????????????≪?????鴻??*dstptr??撮?ャ????.<br>
 * 
 * @param newtext *dstptr??撮?ャ????????絖???
 * @param dstptr 茲?茖純????newtext???≪?????鴻??篁ｅ?ャ???????ゃ?潟?水??違?吾?????ゃ?潟??/span>
 * @return dstptr??撮?ャ?????≪????? 紊掩??????????????stptr
 * 
 */
char* setValue( char** dstptr, const char* newtext )
{
    char* ptr;
    
    // newtext??0????鐚?*dstptr?????с?????＜?≪????????茹ｆ?障??鐚?
    // *dstptr?????域?篏???????腥堺??絖????≪?????鴻??篁ｅ??/span>
    if( newtext == 0 ){
        ptr = str_dup( "" );
    }else{
        ptr = str_dup( newtext );
    }
    if( ptr != 0 ){
        if( *dstptr != 0 ) delete[] *dstptr;
        *dstptr = ptr;
    }
    return *dstptr;
}

/**
 * 
 * int????絖??????????
 * 
 * @param i 紊??????鴻???医??/span>
 * @return 紊???緇?????絖???
 * 
 */
string intToString( int i ){
        char buf[sizeof(int)*3+1+1+1]; // n???ゃ??????3n+1罅?篁ヤ???膃?垩??罅???\0??罅?
        snprintf( buf, sizeof(buf), "%d", i );
        string s( buf );
        return s;
}

/**
 * 
 * unsigned int????絖??????????
 * 
 * @param i 紊??????鴻???医??/span>
 * @return 紊???緇?????絖???
 * 
 */
string unsignedIntToString( unsigned int i ){
        char buf[sizeof(int)*3+1+1]; // n???ゃ??????3n+1罅?篁ヤ???\0??罅?
        snprintf( buf, sizeof(buf), "%u", i );
        string s( buf );
        return s;
}

