mirror of
https://github.com/overleaf/overleaf.git
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59 lines
2.4 KiB
CoffeeScript
59 lines
2.4 KiB
CoffeeScript
_ = require("underscore")
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metrics = require("metrics-sharelatex")
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logger = require("logger-sharelatex")
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exec = require('child_process').exec
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approvedFormats = ["png"]
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fourtySeconds = 40 * 1000
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childProcessOpts =
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killSignal: "SIGKILL"
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timeout: fourtySeconds
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module.exports =
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convert: (sourcePath, requestedFormat, callback)->
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logger.log sourcePath:sourcePath, requestedFormat:requestedFormat, "converting file format"
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timer = new metrics.Timer("imageConvert")
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destPath = "#{sourcePath}.#{requestedFormat}"
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sourcePath = "#{sourcePath}[0]"
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if !_.include approvedFormats, requestedFormat
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err = new Error("invalid format requested")
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return callback err
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width = "600x"
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args = "nice convert -define pdf:fit-page=#{width} -flatten -density 300 #{sourcePath} #{destPath}"
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console.log args
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exec args, childProcessOpts, (err, stdout, stderr)->
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timer.done()
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if err?
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logger.err err:err, stderr:stderr, sourcePath:sourcePath, requestedFormat:requestedFormat, destPath:destPath, "something went wrong converting file"
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else
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logger.log sourcePath:sourcePath, requestedFormat:requestedFormat, destPath:destPath, "finished converting file"
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callback(err, destPath)
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thumbnail: (sourcePath, callback)->
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logger.log sourcePath:sourcePath, "thumbnail convert file"
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destPath = "#{sourcePath}.png"
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sourcePath = "#{sourcePath}[0]"
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width = "260x"
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args = "nice convert -flatten -background white -density 300 -define pdf:fit-page=#{width} #{sourcePath} -resize #{width} #{destPath}"
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exec args, childProcessOpts, (err, stdout, stderr)->
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if err?
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logger.err err:err, stderr:stderr, sourcePath:sourcePath, "something went wrong converting file to preview"
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else
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logger.log sourcePath:sourcePath, destPath:destPath, "finished thumbnailing file"
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callback(err, destPath)
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preview: (sourcePath, callback)->
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logger.log sourcePath:sourcePath, "preview convert file"
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destPath = "#{sourcePath}.png"
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sourcePath = "#{sourcePath}[0]"
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width = "548x"
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args = "nice convert -flatten -background white -density 300 -define pdf:fit-page=#{width} #{sourcePath} -resize #{width} #{destPath}"
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exec args, childProcessOpts, (err, stdout, stderr)->
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if err?
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logger.err err:err, stderr:stderr, sourcePath:sourcePath, destPath:destPath, "something went wrong converting file to preview"
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else
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logger.log sourcePath:sourcePath, destPath:destPath, "finished converting file to preview"
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callback(err, destPath)
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