Datetimeconverter
Contenu du snippet
dateTimeConverter(1) User Commands dateTimeConverter(1)
NAME
dateTimeConverter
SYNOPSYS
dateTimeConverter [-h][-i input_type][-o output_type][-1 format] [-2 format] [-s universalFmt] [-a addvalue] [u addUnit] args
DESCRIPTION
dateTimeConverter is used to convert differents formats of datetime like timestamp or datetime (YYYYMMDDhhmiss) into an other format wich can be
defined by user, it also enable to add some time in different units to get the corresponding datetime or timestamp.
OPTIONS
--dfmt1,-1 FORMAT
input datetime or output format(if input is timestamp) dfmt1 is used to specify the date format.
--dfmt2,-2 FORMAT
output datetime format dfmt2 is used to specify the date format. those args should be either the ouptut format for example in case of conversion
from timestamp to datetime or the input format in case of onversion from datetime to timestamp: if not specified Default is YYYYMMDDhhmiss.
YYYY year 4 digits
DD day 2 digits
MM Month 2 digits
hh hour 2 digits
mi minutes 2 digits
ss seconds 2 digits
--input_type ,-i INPUT_TYPE
type of input :datetime or timestamp.
--universal ,-s STRING_FORMAT
universal output datetime format.
%a Abbreviated weekday name
%A Full weekday name
%b Abbreviated month name
%B Full month name
%c Date and time representation
%d Day of the month (01-31)
%H Hour in 24h format (00-23)
%I Hour in 12h format (01-12)
%j Day of the year (001-366)
%m Month as a decimal number (01-12)
%M Minute (00-59)
%p AM or PM designation
%S Second (00-61)
%U Week number with the first Sunday as the first day of week one (00-53)
%w Weekday as a decimal number with Sunday as0 (0-6)
%W Week number with the first Monday as the first day of week one (00-53)
%x Date representation
%X Time representation
%y Year, last two digits (00-99)
%Y Year
%Z Timezone name or abbreviation
%% A % sign
--output_type ,-o OUTPUT_TYPE
type of output :datetime or timestamp.
--help, -h
print this help.
--add, -a VALUE
value to add.
--add_unit, -u UNIT
unit for value to add : allowed is Day, Month, Year, hour, minute, second.
args values to convert in the specified format.
EXAMPLES:
dateTimeConverter -i datetime -o datetime 20110101120000 -1 YYYYMMDDhhmiss -2 "DD/MM/YYYY hh:mi:ss"
return : 01/01/2011 12:00:00
dateTimeConverter -i datetime -o timestamp 20110101120000
return 1293879600
convert a datetime into timestamp with the default datetime format
dateTimeConverter -i datetime -o timestamp -1 "DD/MM/YYYY hh:mi:ss" "01/01/2011 12:00:00"
return 1293879600
convert datetime into timestamp with a specified user format in input
dateTimeConverter -i datetime -o timestamp -1 "DD/MM/YYYY hh:mi:ss" "01/01/2011 12:00:00" -a 10 -u D
return 1294743600
convert datetime to timestamp with an input specified user format after adding 10 days to the input datetime
dateTimeConverter -i datetime -o datetime -s "%A %B %d %Y %H:%M:%S" -1 "DD/MM/YYYY hh:mi:ss" "10/08/2011 13:34:24" -a 10 -u D
return Saturday August 20 2011 13:34:24
convert a specifed datetime format to an other universal datetime format after adding 10 days to the input datetime
dateTimeConverter -i timestamp -o datetime -s "%A %B %d %Y %H:%M:%S" 12345678 -a 10 -u D
return Tuesday June 02 1970 23:21:18
convert a timestamp to an universal datetime format after adding 10 days to the input timestamp
date +%Y%m%d%H%M%S | xargs dateTimeConverter -i datetime -o timestamp -1 YYYYMMDDhhmiss
return current timestamp
date +%s | xargs dateTimeConverter -i timestamp -o timestamp -a 31 -u D
return timestamp after adding 31 days to the current timestamp
Cette petite application en ligne de commande sans prétention avait pour but premier de convertir les dates en timestamp et vice versa sous unix, je l'ai ensuite adaptée pour convertir 1 format de date en 1 autre format de date avec la possibilité de manipuler des opération sur les différentes unités de temps au passage.
J'ai voulu crééer cette source pour également expérimenter la librairie getopt.h (gestion des options et arguments des lignes de commandes )
Donc voilà c'est fait en c++ par commodités pour la gestion des entrées sorties. J'ai mis la page de man que j'ai créée en guise de description
NAME
dateTimeConverter
SYNOPSYS
dateTimeConverter [-h][-i input_type][-o output_type][-1 format] [-2 format] [-s universalFmt] [-a addvalue] [u addUnit] args
DESCRIPTION
dateTimeConverter is used to convert differents formats of datetime like timestamp or datetime (YYYYMMDDhhmiss) into an other format wich can be
defined by user, it also enable to add some time in different units to get the corresponding datetime or timestamp.
OPTIONS
--dfmt1,-1 FORMAT
input datetime or output format(if input is timestamp) dfmt1 is used to specify the date format.
--dfmt2,-2 FORMAT
output datetime format dfmt2 is used to specify the date format. those args should be either the ouptut format for example in case of conversion
from timestamp to datetime or the input format in case of onversion from datetime to timestamp: if not specified Default is YYYYMMDDhhmiss.
YYYY year 4 digits
DD day 2 digits
MM Month 2 digits
hh hour 2 digits
mi minutes 2 digits
ss seconds 2 digits
--input_type ,-i INPUT_TYPE
type of input :datetime or timestamp.
--universal ,-s STRING_FORMAT
universal output datetime format.
%a Abbreviated weekday name
%A Full weekday name
%b Abbreviated month name
%B Full month name
%c Date and time representation
%d Day of the month (01-31)
%H Hour in 24h format (00-23)
%I Hour in 12h format (01-12)
%j Day of the year (001-366)
%m Month as a decimal number (01-12)
%M Minute (00-59)
%p AM or PM designation
%S Second (00-61)
%U Week number with the first Sunday as the first day of week one (00-53)
%w Weekday as a decimal number with Sunday as0 (0-6)
%W Week number with the first Monday as the first day of week one (00-53)
%x Date representation
%X Time representation
%y Year, last two digits (00-99)
%Y Year
%Z Timezone name or abbreviation
%% A % sign
--output_type ,-o OUTPUT_TYPE
type of output :datetime or timestamp.
--help, -h
print this help.
--add, -a VALUE
value to add.
--add_unit, -u UNIT
unit for value to add : allowed is Day, Month, Year, hour, minute, second.
args values to convert in the specified format.
EXAMPLES:
dateTimeConverter -i datetime -o datetime 20110101120000 -1 YYYYMMDDhhmiss -2 "DD/MM/YYYY hh:mi:ss"
return : 01/01/2011 12:00:00
dateTimeConverter -i datetime -o timestamp 20110101120000
return 1293879600
convert a datetime into timestamp with the default datetime format
dateTimeConverter -i datetime -o timestamp -1 "DD/MM/YYYY hh:mi:ss" "01/01/2011 12:00:00"
return 1293879600
convert datetime into timestamp with a specified user format in input
dateTimeConverter -i datetime -o timestamp -1 "DD/MM/YYYY hh:mi:ss" "01/01/2011 12:00:00" -a 10 -u D
return 1294743600
convert datetime to timestamp with an input specified user format after adding 10 days to the input datetime
dateTimeConverter -i datetime -o datetime -s "%A %B %d %Y %H:%M:%S" -1 "DD/MM/YYYY hh:mi:ss" "10/08/2011 13:34:24" -a 10 -u D
return Saturday August 20 2011 13:34:24
convert a specifed datetime format to an other universal datetime format after adding 10 days to the input datetime
dateTimeConverter -i timestamp -o datetime -s "%A %B %d %Y %H:%M:%S" 12345678 -a 10 -u D
return Tuesday June 02 1970 23:21:18
convert a timestamp to an universal datetime format after adding 10 days to the input timestamp
date +%Y%m%d%H%M%S | xargs dateTimeConverter -i datetime -o timestamp -1 YYYYMMDDhhmiss
return current timestamp
date +%s | xargs dateTimeConverter -i timestamp -o timestamp -a 31 -u D
return timestamp after adding 31 days to the current timestamp
Source / Exemple :
#include <getopt.h>
#include <iostream>
#include <sstream>
#include <string>
#include <map>
#include <time.h>
using namespace std;
typedef multimap<string,string> Map;
char units [7]={'D','M','Y','h','m','s',0};
void usage (string prog_name){
cerr<<"Usage: "<<prog_name;
cerr<<" [-h][-i input_type][-o output_type][-1 format] [-2 format]";
cerr<<" [-s FORMAT] [-a addval] [-u unit] args"<<endl;
cerr<<" options:"<<endl<<endl;
cerr<<" --dfmt1, -1 : input datetime or output format(if input is timestamp) dfmt1 is used to ";
cerr<<"specify the date format ";
cerr<<endl<<endl;
cerr<<" --dfmt2, -2 : output datetime format dfmt2 is used to ";
cerr<<"specify the date format"<<endl;
cerr<<" those args should be either the ouptut format"<<endl;
cerr<<" for example in case of conversion from"<<endl;
cerr<<" timestamp to datetime or the input"<<endl;
cerr<<" format in case of onversion from";
cerr<<" datetime to timestamp:"<<endl;
cerr<<" if not specified Default is YYYYMMDDhhmiss";
cerr<<endl;
cerr<<" YYYY year 4 digits"<<endl;
cerr<<" DD day 2 digits"<<endl;
cerr<<" MM Month 2 digits"<<endl;
cerr<<" hh hour 2 digits"<<endl;
cerr<<" mi minutes 2 digits"<<endl;
cerr<<" ss seconds 2 digits" <<endl<<endl;
cerr<<" --input_type ,-i : type of input :datetime or timestamp "<<endl<<endl;
cerr<<" --universal ,-s : universal output datetime format "<<endl;
cerr<<" %a Abbreviated weekday name"<<endl;
cerr<<" %A Full weekday name"<<endl;
cerr<<" %b Abbreviated month name * Aug "<<endl;
cerr<<" %B Full month name"<<endl;
cerr<<" %c Date and time representation"<<endl;
cerr<<" %d Day of the month (01-31)"<<endl;
cerr<<" %H Hour in 24h format (00-23)"<<endl;
cerr<<" %I Hour in 12h format (01-12)"<<endl;
cerr<<" %j Day of the year (001-366)"<<endl;
cerr<<" %m Month as a decimal number (01-12)"<<endl;
cerr<<" %M Minute (00-59)"<<endl;
cerr<<" %p AM or PM designation"<<endl;
cerr<<" %S Second (00-61)"<<endl;
cerr<<" %U Week number with the first Sunday as ";
cerr<<"the first day of week one (00-53)"<<endl;
cerr<<" %w Weekday as a decimal number with Sunday as";
cerr<<"0 (0-6)"<<endl;
cerr<<" %W Week number with the first Monday as the ";
cerr<<"first day of week one (00-53)"<<endl;
cerr<<" %x Date representation"<<endl;
cerr<<" %X Time representation"<<endl;
cerr<<" %y Year, last two digits (00-99) "<<endl;
cerr<<" %Y Year "<<endl;
cerr<<" %Z Timezone name or abbreviation"<<endl;
cerr<<" %% A % sign"<<endl;
cerr<<endl;
cerr<<" --output_type ,-o : type of output :datetime or timestamp " ;
cerr<<endl<<endl;
cerr<<" --help ,-h : print this help " <<endl<<endl;
cerr<<" --add, -a : value to add "<<endl<<endl;
cerr<<" --add_unit, -u : unit for value to add "<<endl<<endl;
cerr<<" args : values to convert in the specified format ";
cerr <<endl<<endl;
cerr<<" EXAMPLES:"<<endl;
cerr<<prog_name<<" -i datetime -o datetime 20110101120000 -1 YYYYMMDDhhmiss";
cerr<<" -2\"DD/MM/YYYY hh:mi:ss\""<<endl;
cerr<<" return : 01/01/2011 12:00:00"<<endl<<endl;
cerr<<prog_name<<" -i datetime -o timestamp 20110101120000";
cerr<<endl;
cerr<<"return 1293879600 "<<endl<<endl;
cerr<<prog_name<<" -i datetime -o timestamp -1 \"DD/MM/YYYY hh:mi:ss\" ";
cerr<<"\"01/01/2011 12:00:00\""<<endl;
cerr<<"return 1293879600 "<<endl<<endl;
cerr<<prog_name<<" -i datetime -o timestamp -1 \"DD/MM/YYYY hh:mi:ss\" ";
cerr<<"\"01/01/2011 12:00:00\" -a 10 -u D"<<endl;
cerr<<"return 1294743600 "<<endl<<endl;
}
int str2int (string s) {
int i;
istringstream iss(s);
iss>>i;
return i;
}
int timeAdd ( int v,char unit,struct tm * timeinfo){
switch (unit){
case 'D':
timeinfo->tm_mday+=v;
break;
case 'M':
timeinfo->tm_mon+=v;
break;
case 'Y':
timeinfo->tm_year+=v;
break;
case 'h':
timeinfo->tm_hour+=v;
break;
case 'm':
timeinfo->tm_min+=v;
break;
case 's':
timeinfo->tm_sec+=v;
break;
default: cerr<<"unknown unit :"<<unit<<endl;
}
return mktime (timeinfo);
}
int toTimestamp(string time, string format,struct tm * timeinfo) {
time_t tms=0;
timeinfo=localtime(&tms);
timeinfo->tm_year =str2int( time.substr(format.find("YYYY"),4)) - 1900;
timeinfo->tm_mday =str2int( time.substr(format.find("DD") ,2));
timeinfo->tm_mon =str2int( time.substr(format.find("MM") ,2)) - 1;
timeinfo->tm_hour =str2int( time.substr(format.find("hh") ,2));
timeinfo->tm_min =str2int( time.substr(format.find("mi") ,2));
timeinfo->tm_sec =str2int( time.substr(format.find("ss") ,2));
tms=mktime(timeinfo);
return tms;
}
string toDatetime(string format,struct tm * timeinfo) {
ostringstream y,d,mo,h,mi,s;
string tmp=format;
y<<timeinfo->tm_year + 1900;
if (timeinfo->tm_mday < 10) d<<"0"<<timeinfo->tm_mday;
else d<<timeinfo->tm_mday;
if (timeinfo->tm_mon +1< 10) mo<<"0"<<timeinfo->tm_mon+1;
else mo<<timeinfo->tm_mon+1;
if (timeinfo->tm_hour < 10) h<<"0"<<timeinfo->tm_hour;
else h<<timeinfo->tm_hour;
if (timeinfo->tm_min < 10) mi<<"0"<<timeinfo->tm_min;
else mi<<timeinfo->tm_min;
if (timeinfo->tm_sec < 10) s<<"0"<<timeinfo->tm_sec;
else s<<timeinfo->tm_sec;
tmp.replace(tmp.find("YYYY",0),4,y.str());
tmp.replace(tmp.find("DD",0),2,d.str());
tmp.replace(tmp.find("MM",0),2,mo.str());
tmp.replace(tmp.find("hh",0),2,h.str());
tmp.replace(tmp.find("mi",0),2,mi.str());
tmp.replace(tmp.find("ss",0),2,s.str());
return tmp;
}
bool isInMap(Map mm,string s){
Map::iterator it;
it=mm.find(s);
return (it!=mm.end());
}
bool isConvAllowed(Map mm,string s1,string s2){
Map::iterator it;
it=mm.find(s1);
if (it!=mm.end())
while (it->second!=s2) it++;
return (it!=mm.end());
return (it!=mm.end());
}
bool isInUnit(char c){
char * ref;
ref=units;
while (ref){
if (*ref == c)
return true;
ref++;
}
return false;
}
int main (int argc,char** argv) {
int c;
int long_opt_index = 0;
string format1="YYYYMMDDhhmiss";
string format2="YYYYMMDDhhmiss";
string addV="0";
int av=0;
char addU='D';
char* universalFmt;
int flgUnivFmt=0;
char buffer [100];
string input_type="";
string output_type="";
string progname="dateTimeConverter";
string stime;
struct tm * timeinfo;
time_t rawtime;
Map typesAllowed ;
typesAllowed.insert(pair<string,string>("datetime","timestamp"));
typesAllowed.insert(pair<string,string>("timestamp","datetime"));
typesAllowed.insert(pair<string,string>("timestamp","timestamp"));
typesAllowed.insert(pair<string,string>("datetime","datetime"));
static struct option long_options[] = {
{"dfmt1", 1, 0, '1'},
{"dfmt2", 1, 0, '2'},
{"add", 1, 0, 'a'},
{"add_unit", 1, 0, 'u'},
{"universal", 1, 0, 's'},
{"input_type", 1, 0, 'i'},
{"output_type", 1, 0, 'o'},
{"help", 0, 0, 'h'},
{0, 0, 0, 0}
};
while ( (c=getopt_long ( argc, argv, "a:i:o:1:2:hs:u:", long_options,
&long_opt_index )) != -1 )
switch (c){
case '1':
format1=optarg;
break;
case '2':
format2=optarg;
break;
case 'i':
input_type=optarg;
break;
case 'o':
output_type=optarg;
break;
case 's':
flgUnivFmt=1;
universalFmt=optarg;
break;
case 'h':
usage(progname);
break;
case 'a':
addV=optarg;
break;
case 'u':
addU=optarg[0];
break;
default : return -1;
}
if (input_type!="")
if (!isConvAllowed(typesAllowed,input_type,output_type)){
cerr<<"Conversion types "<<input_type<<" or "<<output_type;
cerr<<" are not allowed, please use option -h for help!"<<endl;
return -1;
};
if (addU!='0')
{
if (!isInUnit(addU)){
cerr<<"forbidden unit, please use option -h for help!"<<endl;
return -1;
}
else av=str2int(addV);
}
while (optind<argc) {
stime=argv[optind++];
if (output_type=="timestamp"){
if (input_type=="datetime"){
time (&rawtime);
timeinfo = localtime ( &rawtime );
rawtime=toTimestamp(stime,format1,timeinfo);
if (av!=0){
rawtime=timeAdd(av,addU,timeinfo);
}
cout<<rawtime<<endl;
} else {
time (&rawtime);
rawtime=str2int(stime);
timeinfo = localtime ( &rawtime );
if (av!=0)
timeAdd(av,addU,timeinfo);
stime=toDatetime(format1,timeinfo);
cout<<toTimestamp(stime,format1,timeinfo)<<endl;
}
}
if (output_type=="datetime"){
if (input_type=="timestamp"){
time (&rawtime);
rawtime=str2int(stime);
timeinfo = localtime ( &rawtime );
timeAdd(av,addU,timeinfo);
if (!flgUnivFmt)
cout<<toDatetime(format1,timeinfo)<<endl;
else {
strftime (buffer,100,universalFmt,timeinfo);
cout<<buffer<<endl;
}
}
if (input_type=="datetime"){
time (&rawtime);
timeinfo = localtime ( &rawtime );
rawtime=toTimestamp(stime,format1,timeinfo);
timeAdd(av,addU,timeinfo);
if (!flgUnivFmt)
cout<<toDatetime(format2,timeinfo)<<endl;
else {
strftime (buffer,100,universalFmt,timeinfo);
cout<<buffer<<endl;
}
}
}
}
return 0;
}
Conclusion :
Cette petite application en ligne de commande sans prétention avait pour but premier de convertir les dates en timestamp et vice versa sous unix, je l'ai ensuite adaptée pour convertir 1 format de date en 1 autre format de date avec la possibilité de manipuler des opération sur les différentes unités de temps au passage.
J'ai voulu crééer cette source pour également expérimenter la librairie getopt.h (gestion des options et arguments des lignes de commandes )
Donc voilà c'est fait en c++ par commodités pour la gestion des entrées sorties. J'ai mis la page de man que j'ai créée en guise de description
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