-
Notifications
You must be signed in to change notification settings - Fork 0
/
convert.js
85 lines (66 loc) · 1.89 KB
/
convert.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
var fs = require('fs');
var path = require('path');
var async = require('async');
var exec = require('child_process').exec;
var srcDir = path.resolve(process.cwd(), process.argv[2]);
var dstDir = path.resolve(process.cwd(), process.argv[3]);
var backgroundColor = '#ffffff';
var files = [];
scanDirectory();
var n = files.length;
var i = 0;
async.eachLimit(
files,
4,
function (files, cb) {
if (i % 1000 == 0) console.log('processing '+(100*i/n).toFixed(1)+'%');
i++;
exec(
'gm convert '+files[0]+' -background "'+backgroundColor+'" -flatten -level 20,1.0,220 '+files[1],
function (error, stdout, stderr) {
if (error) console.error(error);
cb()
});
},
function () {
console.log('finished');
}
)
function scanDirectory() {
// zoom levels;
fs.readdirSync(srcDir).forEach(function (zName) {
if (!/[0-9]+/.test(zName)) return;
var zDirSrc = path.resolve(srcDir, zName)
var zDirDst = path.resolve(dstDir, zName)
var stat = fs.statSync(zDirSrc);
if (!stat.isDirectory()) return;
console.log('scan "'+zDirSrc+'"');
var z = parseInt(zName, 10);
var maxHeight = Math.pow(2, z)-1;
// x values
fs.readdirSync(zDirSrc).forEach(function (xName) {
if (!/[0-9]+/.test(xName)) return;
var xDirSrc = path.resolve(zDirSrc, xName)
var xDirDst = path.resolve(zDirDst, xName)
var stat = fs.statSync(xDirSrc);
if (!stat.isDirectory()) return;
ensureDir(xDirDst);
// y values
fs.readdirSync(xDirSrc).forEach(function (yName) {
if (!/[0-9]+\.png/.test(yName)) return;
var yFileSrc = path.resolve(xDirSrc, yName)
var stat = fs.statSync(yFileSrc);
if (stat.isDirectory()) return;
var y = parseInt(yName, 10);
var yFileDst = path.resolve(xDirDst, (maxHeight - y)+'.jpg');
files.push([yFileSrc, yFileDst]);
})
})
})
}
function ensureDir(dir) {
if (!fs.existsSync(dir)) {
ensureDir(path.dirname(dir));
fs.mkdirSync(dir);
}
}