www.pudn.com > 播放mp3的控件.rar > helper.cpp

#include  
#include  
#include  
#include "helper.h" 
 
__inline LPTSTR DeleteString(LPTSTR s) { 
    if (s)  
    { 
        free (s); 
    } 
    return NULL; 
} 
 
LPTSTR xstrdup(const LPTSTR s) { 
    if (!s) return NULL; 
    LPTSTR e; 
    int l = _tcsclen(s); 
    e = (LPTSTR) malloc (l+sizeof (TCHAR)); 
    _tcscpy(e, s); 
    return e; 
} 
 
LPTSTR xstrdupe(const LPTSTR s) { 
    if (!s) return NULL; 
    LPTSTR e; 
    int l = _tcsclen(s); 
    e = (LPTSTR) malloc (l+sizeof (TCHAR)); 
    if (!e) throw 1; 
    _tcscpy(e, s); 
    return e; 
} 
 
LPVOID encode_strlist(LPTSTR *strlist, DWORD *enc_len) 
{ 
    LPTSTR buf, tmp_buf, cur_str; 
    int i, j; 
    i = 0; 
    j = 0; 
    cur_str = (LPTSTR) strlist[j]; 
    // define total length 
    while (cur_str != NULL)  
    { 
        i += _tcslen(cur_str) + sizeof TCHAR; 
        cur_str = strlist[++j]; 
    } 
    i+= sizeof TCHAR; 
    // copy strings to buffer 
    *enc_len = i; 
    buf = (LPTSTR) malloc(i); 
    tmp_buf = buf; 
    j = 0; 
    cur_str = (LPTSTR) strlist[j]; 
    // define total length 
    while (cur_str != NULL)  
    { 
        _tcscpy(tmp_buf, cur_str); 
        tmp_buf += _tcslen(cur_str) + sizeof TCHAR; 
        cur_str = strlist[++j]; 
    } 
    *tmp_buf = (TCHAR) 0; 
    return buf; 
} 
 
LPTSTR *decode_strlist(LPVOID str)  
{ 
    LPTSTR cur_str; 
    LPTSTR *buf; 
    int i, j; 
    j = 0; 
    cur_str = (LPTSTR) str; 
    while (*cur_str != (TCHAR) 0)  
    { 
        j++; 
        cur_str += _tcslen(cur_str) + sizeof TCHAR; 
    } 
    j++; 
    buf = (LPTSTR *) malloc(j * sizeof LPVOID); 
    i = 0; 
    cur_str = (LPTSTR) str; 
    while (i < j)  
    { 
        *buf = xstrdup(cur_str); 
        buf += sizeof(LPTSTR); 
        cur_str += _tcslen(cur_str) + sizeof TCHAR;         
    } 
    *buf = NULL; 
    return buf; 
}