70 lines
1.4 KiB
JavaScript
70 lines
1.4 KiB
JavaScript
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var fs = require('fs')
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var gs = require('ghostscript')
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var path = require('path')
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var reckon_path = "."
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var export_path = "export"
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var index_name = "index.json"
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if(!fs.existsSync(export_path))
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fs.mkdirSync(export_path);
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var index = [];
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var index_path = path.join(export_path, index_name);
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if(fs.existsSync(index_path))
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index = JSON.parse(fs.readFileSync(index_path, 'utf8'));
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fs.readdir(reckon_path, function(err, files) {
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if(err)
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throw err;
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files.map(function (f) {
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return {"name" : f, "path" : path.join(reckon_path, f)};
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}).filter(function (f) {
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return (fs.statSync(f.path).isFile() && path.extname(f.path) === '.pdf' && !exists(f.name));
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}).forEach(function (f) {
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var img_fname = extract_img(f.path);
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var entry = {}
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entry.name = f.name;
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entry.imgs = [];
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entry.imgs.push(img_fname);
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index.push(entry);
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})
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var index_content = JSON.stringify(index, null, 2);
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fs.writeFile(index_path, index_content, function(err) {
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if(err) return console.log(err);
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console.log(index_path + '>' + index_content);
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});
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});
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function extract_img(file) {
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var out_name = path.basename(file) + ".png"
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var out = path.join(export_path, out_name);
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gs()
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.batch()
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.quiet()
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.nopause()
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.device('pngalpha')
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.input(file)
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.output(out)
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.r(72)
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.spawn();
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return out_name;
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}
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function exists(fname) {
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for (var e in index) {
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if(index[e].name === fname)
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return true;
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}
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return false;
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}
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