forked from sheetjs/sheetjs
104 lines
3.5 KiB
JavaScript
104 lines
3.5 KiB
JavaScript
function parse_date_code(v/*:number*/,opts/*:?any*/,b2/*:?boolean*/) {
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if(v > 2958465 || v < 0) return null;
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var date = (v|0), time = Math.floor(86400 * (v - date)), dow=0;
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var dout=[];
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var out={D:date, T:time, u:86400*(v-date)-time,y:0,m:0,d:0,H:0,M:0,S:0,q:0};
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if(Math.abs(out.u) < 1e-6) out.u = 0;
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fixopts(opts != null ? opts : (opts=[]));
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if(opts.date1904) date += 1462;
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if(out.u > 0.999) {
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out.u = 0;
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if(++time == 86400) { time = 0; ++date; }
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}
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if(date === 60) {dout = b2 ? [1317,10,29] : [1900,2,29]; dow=3;}
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else if(date === 0) {dout = b2 ? [1317,8,29] : [1900,1,0]; dow=6;}
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else {
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if(date > 60) --date;
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/* 1 = Jan 1 1900 in Gregorian */
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var d = new Date(1900, 0, 1);
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d.setDate(d.getDate() + date - 1);
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dout = [d.getFullYear(), d.getMonth()+1,d.getDate()];
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dow = d.getDay();
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if(date < 60) dow = (dow + 6) % 7;
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if(b2) dow = fix_hijri(d, dout);
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}
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out.y = dout[0]; out.m = dout[1]; out.d = dout[2];
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out.S = time % 60; time = Math.floor(time / 60);
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out.M = time % 60; time = Math.floor(time / 60);
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out.H = time;
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out.q = dow;
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return out;
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}
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SSF.parse_date_code = parse_date_code;
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/*jshint -W086 */
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function write_date(type/*:number*/, fmt/*:string*/, val, ss0/*:?number*/)/*:string*/ {
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var o="", ss=0, tt=0, y = val.y, out, outl = 0;
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switch(type) {
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case 98: /* 'b' buddhist year */
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y = val.y + 543;
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/* falls through */
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case 121: /* 'y' year */
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switch(fmt.length) {
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case 1: case 2: out = y % 100; outl = 2; break;
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default: out = y % 10000; outl = 4; break;
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} break;
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case 109: /* 'm' month */
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switch(fmt.length) {
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case 1: case 2: out = val.m; outl = fmt.length; break;
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case 3: return months[val.m-1][1];
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case 5: return months[val.m-1][0];
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default: return months[val.m-1][2];
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} break;
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case 100: /* 'd' day */
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switch(fmt.length) {
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case 1: case 2: out = val.d; outl = fmt.length; break;
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case 3: return days[val.q][0];
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default: return days[val.q][1];
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} break;
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case 104: /* 'h' 12-hour */
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switch(fmt.length) {
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case 1: case 2: out = 1+(val.H+11)%12; outl = fmt.length; break;
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default: throw 'bad hour format: ' + fmt;
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} break;
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case 72: /* 'H' 24-hour */
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switch(fmt.length) {
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case 1: case 2: out = val.H; outl = fmt.length; break;
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default: throw 'bad hour format: ' + fmt;
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} break;
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case 77: /* 'M' minutes */
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switch(fmt.length) {
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case 1: case 2: out = val.M; outl = fmt.length; break;
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default: throw 'bad minute format: ' + fmt;
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} break;
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case 115: /* 's' seconds */
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if(val.u === 0) switch(fmt) {
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case 's': case 'ss': return pad0(val.S, fmt.length);
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case '.0': case '.00': case '.000':
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}
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switch(fmt) {
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case 's': case 'ss': case '.0': case '.00': case '.000':
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/*::if(!ss0) ss0 = 0; */
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if(ss0 >= 2) tt = ss0 === 3 ? 1000 : 100;
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else tt = ss0 === 1 ? 10 : 1;
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ss = Math.round((tt)*(val.S + val.u));
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if(ss >= 60*tt) ss = 0;
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if(fmt === 's') return ss === 0 ? "0" : ""+ss/tt;
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o = pad0(ss,2 + ss0);
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if(fmt === 'ss') return o.substr(0,2);
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return "." + o.substr(2,fmt.length-1);
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default: throw 'bad second format: ' + fmt;
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}
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case 90: /* 'Z' absolute time */
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switch(fmt) {
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case '[h]': case '[hh]': out = val.D*24+val.H; break;
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case '[m]': case '[mm]': out = (val.D*24+val.H)*60+val.M; break;
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case '[s]': case '[ss]': out = ((val.D*24+val.H)*60+val.M)*60+Math.round(val.S+val.u); break;
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default: throw 'bad abstime format: ' + fmt;
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} outl = fmt.length === 3 ? 1 : 2; break;
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case 101: /* 'e' era */
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out = y; outl = 1;
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}
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if(outl > 0) return pad0(out, outl); else return "";
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}
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/*jshint +W086 */
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