Barrett Ruth
6c1609cba8
Problem: HTML output from pandoc has no live-reload; the browser must be refreshed manually after each compile. Solution: add lua/preview/reload.lua — a minimal SSE-only TCP server. start() binds 127.0.0.1:5554 and keeps EventSource connections alive; broadcast() pushes a reload event to all clients; inject() appends an EventSource script before </body> (or at EOF) on every compile so pandoc overwrites do not lose the tag.
58 lines
1.4 KiB
Lua
58 lines
1.4 KiB
Lua
describe('reload', function()
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local reload
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before_each(function()
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package.loaded['preview.reload'] = nil
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reload = require('preview.reload')
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end)
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after_each(function()
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reload.stop()
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end)
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describe('inject', function()
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it('injects script before </body>', function()
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local path = os.tmpname()
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local f = io.open(path, 'w')
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f:write('<html><body><p>hello</p></body></html>')
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f:close()
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reload.inject(path)
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local fr = io.open(path, 'r')
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local content = fr:read('*a')
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fr:close()
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os.remove(path)
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assert.is_truthy(content:find('EventSource', 1, true))
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local script_pos = content:find('EventSource', 1, true)
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local body_pos = content:find('</body>', 1, true)
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assert.is_truthy(body_pos)
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assert.is_true(script_pos < body_pos)
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end)
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it('appends script when no </body>', function()
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local path = os.tmpname()
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local f = io.open(path, 'w')
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f:write('<html><p>hello</p></html>')
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f:close()
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reload.inject(path)
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local fr = io.open(path, 'r')
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local content = fr:read('*a')
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fr:close()
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os.remove(path)
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assert.is_truthy(content:find('EventSource', 1, true))
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end)
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end)
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describe('broadcast', function()
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it('does not error with no clients', function()
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assert.has_no.errors(function()
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reload.broadcast()
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end)
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end)
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end)
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end)
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