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libsaria: Format a duration (in seconds) 

I turn it into a string "W days, X hours, Y minutes, Z seconds"

Signed-off-by: Bryan Schumaker <bjschuma@gmail.com>
This commit is contained in:
Bryan Schumaker 2012-03-29 07:47:10 -04:00
parent fcc48dbccb
commit c5fe4546e2
2 changed files with 39 additions and 0 deletions
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1
include/libsaria/format.h
View File

@ -10,6 +10,7 @@ namespace libsaria
set<string> *format_text(const string &);
string *lowercase(const string &);
string length_string(unsigned int);
void print_format_stats();
}

38
libsaria/format.cpp
View File

@ -4,6 +4,7 @@
#include <map>
#include <set>
#include <sstream>
using namespace std;
static map<string, set<string> > format_cache;
@ -11,6 +12,11 @@ static map<string, string> lc_cache;
static unsigned int format_hits;
static unsigned int lc_hits;
static const unsigned int TM_SECOND = 1;
static const unsigned int TM_MINUTE = 60;
static const unsigned int TM_HOUR = TM_MINUTE * 60;
static const unsigned int TM_DAY = TM_HOUR * 24;
void do_format(const string &text,
map<string, set<string> >::iterator &words,
map<string, string>::iterator &lc)
@ -91,6 +97,22 @@ void find_lowercase(const string &text,
do_format(text, words, lc);
}
unsigned int add_to_stream(stringstream &stream, const unsigned int factor,
string field, unsigned int length, unsigned int total)
{
unsigned int res = length / factor;
if (res == 0)
return 0;
if (total != 0)
stream << ", ";
stream << res << " " << field;
if (res > 1)
stream << "s";
return res * factor;;
}
namespace libsaria
{
@ -120,6 +142,22 @@ namespace libsaria
return &(it->second);
}
string length_string(unsigned int len)
{
unsigned int tot;
stringstream stream;
if (len == 0)
return "";
tot = add_to_stream(stream, TM_DAY, "day", len, 0);
tot += add_to_stream(stream, TM_HOUR, "hour", len - tot, tot);
tot += add_to_stream(stream, TM_MINUTE, "minute", len - tot, tot);
add_to_stream(stream, TM_SECOND, "second", len - tot, tot);
return stream.str();
}
void print_format_stats()
{
println("Format cache hits: %u size: %u", format_hits, format_cache.size());