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version bump 0.2.2: fraction love

This commit is contained in:
SheetJS 2013-12-14 21:36:52 -05:00
parent 22f04832e3
commit cfb6a520ae
5 changed files with 112 additions and 19 deletions
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2
package.json
View File

@ -1,6 +1,6 @@
{
"name": "ssf",
"version": "0.2.1",
"version": "0.2.2",
"author": "SheetJS",
"description": "pure-JS library to format data using ECMA-376 spreadsheet Format Codes",
"keywords": [ "format", "sprintf", "spreadsheet" ],

35
ssf.js
View File

@ -64,6 +64,25 @@ var months = [
['N', 'Nov', 'November'],
['D', 'Dec', 'December']
];
var frac = function(x, D, mixed) {
var n1 = Math.floor(x), d1 = 1;
var n2 = n1+1, d2 = 1;
if(x !== n1) while(d1 <= D && d2 <= D) {
var m = (n1 + n2) / (d1 + d2);
if(x === m) {
if(d1 + d2 <= D) d1+=d2, n1+=n2, d2=D+1;
else if(d1 > d2) d2=D+1;
else d1=D+1;
break;
}
else if(x < m) n2 = n1+n2, d2 = d1+d2;
else n1 = n1+n2, d1 = d1+d2;
}
if(d1 > D) d1 = d2, n1 = n2;
if(!mixed) return [0, n1, d1];
var q = Math.floor(n1/d1);
return [q, n1 - q*d1, d1];
};
var general_fmt = function(v) {
if(typeof v === 'boolean') return v ? "TRUE" : "FALSE";
if(typeof v === 'number') {
@ -159,15 +178,17 @@ var write_num = function(type, fmt, val) {
if(fmt.match(/E\-/) && o.match(/e\+/)) o = o.replace(/e\+/,"e");
return o.replace("e","E");
}
var ff;
switch(fmt) {
case "0": return Math.round(val);
case "0.00": return Math.round(val*100)/100;
case "#,##0": return commaify(String(Math.round(val)));
case "#,##0.00": return commaify(String(Math.floor(val))) + "." + Math.round((val-Math.floor(val))*100);
case "# ? / ?": ff = frac(val, 10, true); return ff[0] + " " + ff[1] + "/" + ff[2];
case "# ?? / ??": ff = frac(val, 100, true); return ff[0] + " " + ff[1] + "/" + ff[2];
default:
}
console.log(type, fmt, val);
return "0";
throw new Error("unsupported format |" + fmt + "|");
};
function split_fmt(fmt) {
var out = [];
@ -220,7 +241,7 @@ function eval_fmt(fmt, v, opts) {
break;
/* Numbers */
case '0': case '#':
var nn = ""; while("0#.,E+-%".indexOf(c=fmt[i++]) > -1) nn += c;
var nn = ""; while("0#?.,E+-%".indexOf(c=fmt[i++]) > -1) nn += c;
out.push({t:'n', v:nn}); break;
case '?':
o = fmt[i]; while(fmt[++i] === c) o+=c;
@ -232,6 +253,7 @@ function eval_fmt(fmt, v, opts) {
out.push({t:'t', v:c}); ++i; break;
}
}
/* walk backwards */
for(i=out.length-1, lst='t'; i >= 0; --i) {
switch(out[i].t) {
@ -249,8 +271,13 @@ function eval_fmt(fmt, v, opts) {
out[i].v = write_date(out[i].t, out[i].v, dt);
out[i].t = 't'; break;
case 'n':
var jj = i+1;
while(out[jj] && (out[jj].t == '?' || out[jj].t == 't' && out[jj].v == '/')) {
out[i].v += ' ' + out[jj].v; delete out[jj]; ++jj
}
out[i].v = write_num(out[i].t, out[i].v, v);
out[i].t = 't'; break;
out[i].t = 't';
i = jj; break;
default: throw "unrecognized type " + out[i].t;
}
}

57
ssf.md
View File

@ -365,15 +365,22 @@ For exponents, get the exponent and mantissa and format them separately:
The default cases are hard-coded. TODO: actually parse them
```js>tmp/number.js
var ff;
switch(fmt) {
case "0": return Math.round(val);
case "0.00": return Math.round(val*100)/100;
case "#,##0": return commaify(String(Math.round(val)));
case "#,##0.00": return commaify(String(Math.floor(val))) + "." + Math.round((val-Math.floor(val))*100);
```
The frac helper function is used for fraction formats (defined below).
```js>tmp/number.js
case "# ? / ?": ff = frac(val, 10, true); return ff[0] + " " + ff[1] + "/" + ff[2];
case "# ?? / ??": ff = frac(val, 100, true); return ff[0] + " " + ff[1] + "/" + ff[2];
default:
}
console.log(type, fmt, val);
return "0";
throw new Error("unsupported format |" + fmt + "|");
};
```
@ -462,12 +469,12 @@ only the absolute time `[h]` is captured (using the pseudo-type `Z`):
break;
```
Number blocks (following the general pattern `[0#][0#.,E+-%]*`) are grouped together:
Number blocks (following the general pattern `[0#?][0#?.,E+-%]*`) are grouped together:
```
/* Numbers */
case '0': case '#':
var nn = ""; while("0#.,E+-%".indexOf(c=fmt[i++]) > -1) nn += c;
var nn = ""; while("0#?.,E+-%".indexOf(c=fmt[i++]) > -1) nn += c;
out.push({t:'n', v:nn}); break;
```
@ -486,6 +493,7 @@ number 123.456 under format `|??| / |???| |???| foo` is `|15432| / |125| | |
out.push({t:'t', v:c}); ++i; break;
}
}
/* walk backwards */
for(i=out.length-1, lst='t'; i >= 0; --i) {
switch(out[i].t) {
@ -503,8 +511,13 @@ number 123.456 under format `|??| / |???| |???| foo` is `|15432| / |125| | |
out[i].v = write_date(out[i].t, out[i].v, dt);
out[i].t = 't'; break;
case 'n':
var jj = i+1;
while(out[jj] && (out[jj].t == '?' || out[jj].t == 't' && out[jj].v == '/')) {
out[i].v += ' ' + out[jj].v; delete out[jj]; ++jj
}
out[i].v = write_num(out[i].t, out[i].v, v);
out[i].t = 't'; break;
out[i].t = 't';
i = jj; break;
default: throw "unrecognized type " + out[i].t;
}
}
@ -619,6 +632,32 @@ SSF.load = function(fmt, idx) { table_fmt[idx] = fmt; };
SSF.format = format;
```
## Fraction Library
The implementation is from [our frac library](https://github.com/SheetJS/frac/):
```js>tmp/frac.js
var frac = function(x, D, mixed) {
var n1 = Math.floor(x), d1 = 1;
var n2 = n1+1, d2 = 1;
if(x !== n1) while(d1 <= D && d2 <= D) {
var m = (n1 + n2) / (d1 + d2);
if(x === m) {
if(d1 + d2 <= D) d1+=d2, n1+=n2, d2=D+1;
else if(d1 > d2) d2=D+1;
else d1=D+1;
break;
}
else if(x < m) n2 = n1+n2, d2 = d1+d2;
else n1 = n1+n2, d1 = d1+d2;
}
if(d1 > D) d1 = d2, n1 = n2;
if(!mixed) return [0, n1, d1];
var q = Math.floor(n1/d1);
return [q, n1 - q*d1, d1];
};
```
## JS Boilerplate
```js>tmp/00_header.js
@ -644,8 +683,8 @@ function pad(v,d){var t=String(v);return t.length>=d?t:(fill(0,d-t.length)+t);}
```bash>tmp/post.sh
#!/bin/bash
npm install
cat tmp/{00_header,opts,consts,general,date,number,main,zz_footer_n}.js > ssf_node.js
cat tmp/{00_header,opts,consts,general,date,number,main,zz_footer}.js > ssf.js
cat tmp/{00_header,opts,consts,frac,general,date,number,main,zz_footer_n}.js > ssf_node.js
cat tmp/{00_header,opts,consts,frac,general,date,number,main,zz_footer}.js > ssf.js
```
```json>.vocrc
@ -673,7 +712,7 @@ test:
```json>package.json
{
"name": "ssf",
"version": "0.2.1",
"version": "0.2.2",
"author": "SheetJS",
"description": "pure-JS library to format data using ECMA-376 spreadsheet Format Codes",
"keywords": [ "format", "sprintf", "spreadsheet" ],
@ -715,7 +754,7 @@ The mocha test driver tests the implied formats:
var SSF = require('../');
var fs = require('fs'), assert = require('assert');
var data = JSON.parse(fs.readFileSync('./test/implied.json','utf8'));
var skip = [12, 13, 47, 48];
var skip = [47, 48];
describe('implied formats', function() {
data.forEach(function(d) {
it(d[1]+" for "+d[0], skip.indexOf(d[1]) > -1 ? null : function(){

35
ssf_node.js
View File

@ -64,6 +64,25 @@ var months = [
['N', 'Nov', 'November'],
['D', 'Dec', 'December']
];
var frac = function(x, D, mixed) {
var n1 = Math.floor(x), d1 = 1;
var n2 = n1+1, d2 = 1;
if(x !== n1) while(d1 <= D && d2 <= D) {
var m = (n1 + n2) / (d1 + d2);
if(x === m) {
if(d1 + d2 <= D) d1+=d2, n1+=n2, d2=D+1;
else if(d1 > d2) d2=D+1;
else d1=D+1;
break;
}
else if(x < m) n2 = n1+n2, d2 = d1+d2;
else n1 = n1+n2, d1 = d1+d2;
}
if(d1 > D) d1 = d2, n1 = n2;
if(!mixed) return [0, n1, d1];
var q = Math.floor(n1/d1);
return [q, n1 - q*d1, d1];
};
var general_fmt = function(v) {
if(typeof v === 'boolean') return v ? "TRUE" : "FALSE";
if(typeof v === 'number') {
@ -159,15 +178,17 @@ var write_num = function(type, fmt, val) {
if(fmt.match(/E\-/) && o.match(/e\+/)) o = o.replace(/e\+/,"e");
return o.replace("e","E");
}
var ff;
switch(fmt) {
case "0": return Math.round(val);
case "0.00": return Math.round(val*100)/100;
case "#,##0": return commaify(String(Math.round(val)));
case "#,##0.00": return commaify(String(Math.floor(val))) + "." + Math.round((val-Math.floor(val))*100);
case "# ? / ?": ff = frac(val, 10, true); return ff[0] + " " + ff[1] + "/" + ff[2];
case "# ?? / ??": ff = frac(val, 100, true); return ff[0] + " " + ff[1] + "/" + ff[2];
default:
}
console.log(type, fmt, val);
return "0";
throw new Error("unsupported format |" + fmt + "|");
};
function split_fmt(fmt) {
var out = [];
@ -220,7 +241,7 @@ function eval_fmt(fmt, v, opts) {
break;
/* Numbers */
case '0': case '#':
var nn = ""; while("0#.,E+-%".indexOf(c=fmt[i++]) > -1) nn += c;
var nn = ""; while("0#?.,E+-%".indexOf(c=fmt[i++]) > -1) nn += c;
out.push({t:'n', v:nn}); break;
case '?':
o = fmt[i]; while(fmt[++i] === c) o+=c;
@ -232,6 +253,7 @@ function eval_fmt(fmt, v, opts) {
out.push({t:'t', v:c}); ++i; break;
}
}
/* walk backwards */
for(i=out.length-1, lst='t'; i >= 0; --i) {
switch(out[i].t) {
@ -249,8 +271,13 @@ function eval_fmt(fmt, v, opts) {
out[i].v = write_date(out[i].t, out[i].v, dt);
out[i].t = 't'; break;
case 'n':
var jj = i+1;
while(out[jj] && (out[jj].t == '?' || out[jj].t == 't' && out[jj].v == '/')) {
out[i].v += ' ' + out[jj].v; delete out[jj]; ++jj
}
out[i].v = write_num(out[i].t, out[i].v, v);
out[i].t = 't'; break;
out[i].t = 't';
i = jj; break;
default: throw "unrecognized type " + out[i].t;
}
}

2
test/implied.js
View File

@ -2,7 +2,7 @@
var SSF = require('../');
var fs = require('fs'), assert = require('assert');
var data = JSON.parse(fs.readFileSync('./test/implied.json','utf8'));
var skip = [12, 13, 47, 48];
var skip = [47, 48];
describe('implied formats', function() {
data.forEach(function(d) {
it(d[1]+" for "+d[0], skip.indexOf(d[1]) > -1 ? null : function(){