eic-opticks/sysrap/sidxname.h

0001 #pragma once
0002 /**
0003 sidxname.h
0004 ===========
0005
0006 Typical use with std::set::
0007
0008     sidxname d(-1, "0123456789abcdef0123456789abcdef") ;
0009     sidxname e(-2, "0123456789abcdef0123456789abcdef_") ; // beyond 32 gets truncated
0010
0011     std::set<sidxname,sidxname_ordering> mm ;
0012     mm.insert(d);
0013     mm.insert(e);
0014
0015
0016 **/
0017
0018 #include <cassert>
0019 #include <string>
0020 #include <sstream>
0021 #include <cstring>
0022 #include <iostream>
0023 #include <iomanip>
0024
0025 struct sidxname
0026 {
0027    int idx ;
0028    char name[32] ;
0029
0030    sidxname(int idx_, const char* n) ;
0031
0032    std::string get_name() const ;
0033    std::string desc() const ;
0034 };
0035
0036
0037 struct sidxname_ordering
0038 {
0039     bool operator()(const sidxname& lhs, const sidxname& rhs) const
0040     {
0041         return lhs.idx < rhs.idx ;
0042     }
0043 };
0044
0045
0046 inline sidxname::sidxname(int idx_, const char* n )
0047    :
0048    idx(idx_)
0049 {
0050    int max = sizeof(name) - 1 ;
0051    bool ok = int(strlen(n)) <= max ;
0052    if(!ok) std::cerr
0053         << "sidxname::sidxname"
0054         << " strlen(n) " << strlen(n)
0055         << " max " << max
0056         << " FATAL name is too long [" << n << "]"
0057         << std::endl
0058         ;
0059
0060    assert(ok) ;
0061    strcpy( name, n );
0062 }
0063
0064
0065 inline std::string sidxname::desc() const
0066 {
0067     std::stringstream ss ;
0068     ss << std::setw(3) << idx << " : [" << name << "]" ;
0069     std::string str = ss.str();
0070     return str ;
0071 }
0072
0073
0074