juliacon pretalx custom pdf schedule

pretalx_pdf_schedule.jl

using JSON
using Downloads
using Typst_jll
using Dates


url = "https://pretalx.com/juliacon-2025/schedule/export/schedule.json"

json = JSON.parsefile(Downloads.download(url))

days = json["schedule"]["conference"]["days"][3:5]

function tesc(io::IO, s::AbstractString)
    escapable_special_chars = raw"\$#*_<@`"
    a = Iterators.Stateful(s)
    for c in a
        if c in escapable_special_chars
            print(io, '\\', c)
        else
            print(io, c)
        end
    end
end

function tesc(s::AbstractString)
    return sprint(tesc, s, sizehint=lastindex(s))
end

colwidth_pt = 120

function roomsorter(room)
    (!occursin("Main", room), !occursin("David", room), room)
end

open("typst.typ", "w") do io
    println(io, """
    #set page(width: auto, height: auto, margin: 10pt)
    #set text(font: "SF Hello")
    """)
    for (iday, day) in enumerate(days)

        println(io, "= ", Dates.format(Date(day["date"]), "E, d U yyyy"), "\n")

        time_edges = Iterators.flatmap(values(day["rooms"])) do talks
            Iterators.flatmap(talks) do talk
                [Time(talk["start"]), Time(talk["start"]) + (Time(talk["duration"]) - Time(0))]
            end
        end |> Set |> collect |> sort |> enumerate .|> reverse |> Dict

        roomnames = sort(collect(keys(day["rooms"])), by = roomsorter)
        roomgaps = first.(roomnames, 4)[1:end-1] .!= first.(roomnames, 4)[2:end]

        rooms = Dict(reverse.(enumerate(roomnames)))


        cells = Iterators.flatmap(pairs(day["rooms"])) do (room, talks)
            map(talks) do talk
                start = Time(talk["start"])
                stop = Time(talk["start"]) + (Time(talk["duration"]) - Time(0))
                row = time_edges[start]
                rowspan = time_edges[stop] - row
                (row, rooms[room], rowspan, talk)
            end
        end |> collect |> sort

        println(io, "#table(")
            println(io, "    stroke: none,")
            println(io, "    row-gutter: 2pt,")
            println(io, "    column-gutter: (2pt,) + ($(join([r ? "20pt" : "2pt" for r in roomgaps], ", "))),")
            println(io, "    columns: (auto,) + $(length(rooms)) * ($(colwidth_pt)pt,),")
            println(io, "    rows: $(length(time_edges)) + 1,")

            for (room, col) in rooms
                println(io, "    table.cell(x: $col, y: 0, fill: luma(240))[*$room*],")
            end

            for (time, row) in time_edges
                println(io, "    table.cell(x: 0, y: $(row), fill: luma(240))[*$(Dates.format(time, "HH:MM"))*],")
            end

            for (row, col, rowspan, talk) in cells
                start = Time(talk["start"])
                stop = Time(talk["start"]) + (Time(talk["duration"]) - Time(0))
                time = "#text(size: 4pt, [$(Dates.format(start, "HH:MM")) - $(Dates.format(stop, "HH:MM"))])"
                title = tesc(replace(talk["title"], r"(?<=[a-z])(?=[A-Z])" => "\u200B")) # allow breaks in package names in titles
                names = join([tesc(p["name"]) for p in talk["persons"]], ", ", " & ")
                abstract = tesc(talk["abstract"])
                room = "#text([$(tesc(talk["room"]))], size: 4pt)"
                abstract_small = "#text([$abstract], size: 4pt)"
                content = "$time \n\n $room \n\n *$title*\\ $names \n\n $abstract_small"
                println(io, "    table.cell(fill: color.oklch(93%, 30%, $(360 * col / length(rooms))deg), y: $(row), x: $(col), rowspan: $rowspan)[$content],")
            end
        println(io, ")")

        iday < length(days) && println(io, "#pagebreak()")
    end
end

Typst_jll.typst() do bin
    run(`$bin compile typst.typ`)
end

pretalx_pdf_schedule_with_favorites.jl

using JSON
using Downloads
using Typst_jll
using Dates


url = "https://pretalx.com/juliacon-2025/schedule/export/schedule.json"

json = JSON.parsefile(Downloads.download(url))

days = json["schedule"]["conference"]["days"][3:5]

function tesc(io::IO, s::AbstractString)
    escapable_special_chars = raw"\$#*_<@`"
    a = Iterators.Stateful(s)
    for c in a
        if c in escapable_special_chars
            print(io, '\\', c)
        else
            print(io, c)
        end
    end
end

function tesc(s::AbstractString)
    return sprint(tesc, s, sizehint=lastindex(s))
end

colwidth_pt = 120

function roomsorter(room)
    (!occursin("Main", room), !occursin("David", room), room)
end

calendar_entries = [m.match for m in eachmatch(r"^BEGIN:VEVENT[\s\S]*?END:VEVENT"m, read("juliacon-2025-favs.ics", String))]
favorites_codes = [match(r"UID:pretalx-juliacon-2025-(.*?)@pretalx.com", e)[1] for e in calendar_entries]

open("typst.typ", "w") do io
    println(io, """
    #set page(width: auto, height: auto, margin: 10pt)
    #set text(font: "Avenir")
    """)
    for (iday, day) in enumerate(days)

        println(io, "= ", Dates.format(Date(day["date"]), "E, d U yyyy"), "\n")

        time_edges = Iterators.flatmap(values(day["rooms"])) do talks
            Iterators.flatmap(talks) do talk
                [Time(talk["start"]), Time(talk["start"]) + (Time(talk["duration"]) - Time(0))]
            end
        end |> Set |> collect |> sort |> enumerate .|> reverse |> Dict

        roomnames = sort(collect(keys(day["rooms"])), by = roomsorter)
        roomgaps = first.(roomnames, 4)[1:end-1] .!= first.(roomnames, 4)[2:end]

        rooms = Dict(reverse.(enumerate(roomnames)))


        cells = Iterators.flatmap(pairs(day["rooms"])) do (room, talks)
            map(talks) do talk
                start = Time(talk["start"])
                stop = Time(talk["start"]) + (Time(talk["duration"]) - Time(0))
                row = time_edges[start]
                rowspan = time_edges[stop] - row
                (row, rooms[room], rowspan, talk)
            end
        end |> collect |> sort

        println(io, "#table(")
            println(io, "    stroke: none,")
            println(io, "    row-gutter: 2pt,")
            println(io, "    column-gutter: (2pt,) + ($(join([r ? "20pt" : "2pt" for r in roomgaps], ", "))),")
            println(io, "    columns: (auto,) + $(length(rooms)) * ($(colwidth_pt)pt,),")
            println(io, "    rows: $(length(time_edges)) + 1,")

            for (room, col) in rooms
                println(io, "    table.cell(x: $col, y: 0, fill: luma(240))[*$room*],")
            end

            for (time, row) in time_edges
                println(io, "    table.cell(x: 0, y: $(row), fill: luma(240))[*$(Dates.format(time, "HH:MM"))*],")
            end

            for (row, col, rowspan, talk) in cells
                is_favorite = talk["code"] in favorites_codes
                start = Time(talk["start"])
                stop = Time(talk["start"]) + (Time(talk["duration"]) - Time(0))
                time = "#text(size: 4pt, [$(Dates.format(start, "HH:MM")) - $(Dates.format(stop, "HH:MM"))])"
                title = tesc(replace(talk["title"], r"(?<=[a-z])(?=[A-Z])" => "\u200B")) # allow breaks in package names in titles
                names = join([tesc(p["name"]) for p in talk["persons"]], ", ", " & ")
                abstract = tesc(talk["abstract"])
                room = "#text([$(tesc(talk["room"]))], size: 4pt)"
                abstract_small = "#text([$abstract], size: 4pt)"
                content = "$time \n\n $room \n\n *$title*\\ $names \n\n $abstract_small"
                fill = is_favorite ? "yellow" : "color.oklch(93%, 30%, $(360 * col / length(rooms))deg)"
                println(io, "    table.cell(fill: $fill, y: $(row), x: $(col), rowspan: $rowspan)[$content],")
            end
        println(io, ")")

        iday < length(days) && println(io, "#pagebreak()")
    end
end

Typst_jll.typst() do bin
    run(`$bin compile typst.typ`)
end