markdown_it.lua

Fri, 17 Jul 2020 12:25:24 -0500

author
Tuomo Valkonen <tuomov@iki.fi>
date
Fri, 17 Jul 2020 12:25:24 -0500
changeset 31
7b21ec8ec96a
parent 30
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child 39
5fc5f93a8cad
permissions
-rw-r--r--

fix weird nodejs length/index

21
3c71c525cec2 Use markdown-it as default markdown parser.
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1 local markdown_it={}
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2
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3 local io = require('io')
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4 local os = require('os')
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3ac53da03439 Support loading TEMPLATE_PATH/katex_config.json.
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5 local path = require('mypath')
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6 local lfs = require('lfs')
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7
3ac53da03439 Support loading TEMPLATE_PATH/katex_config.json.
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8 function markdown_it.katex_config(env)
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9 katex_config = path.join(env.paths.tmpl, "katex_config.json")
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10 if lfs.attributes(katex_config) then
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11 return katex_config
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12 else
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13 return nil
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14 end
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15 end
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16
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17 function markdown_it.markdown(str, env)
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18 -- Lua doesn't have bidirectional pipes without the posix library.
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19 -- Keep things and compatible and use temporary files.
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20 tmpname = os.tmpname()
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21 file = io.open(tmpname, 'w')
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22 file:write(str)
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23 cmd = string.format("node '%s/markdown_it.js' '%s'",
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24 env.paths.lgen_location,
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25 tmpname)
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26 -- Provide TEMPLATE_PATH/katex_config.json if it exists
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27 katex_config = markdown_it.katex_config(env)
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28 if katex_config then
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29 cmd = cmd .. " '" .. katex_config .. "'"
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30 end
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31 io.stdout:write('Executing ' .. cmd .. '\n')
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32 h = io.popen(cmd, 'r')
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33 result = h:read("*a")
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34 h:close()
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35 file:close()
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36 return result
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37 end
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38
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39 function markdown_it.add_deps(deps, env)
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40 katex_config = markdown_it.katex_config(env)
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41 if katex_config then
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42 table.insert(deps, katex_config)
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43 end
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44 end
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45
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46 return markdown_it

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