82 lines
1.9 KiB
Lua
82 lines
1.9 KiB
Lua
local fs = require("filesystem")
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local shell = require("shell")
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local gpu = require("component").gpu
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local event = require("event")
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local resX, resY = gpu.getResolution()
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local textBuffer = gpu.allocateBuffer(resX, resY - 1)
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local args = {...}
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local file = args[1]
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if not file then
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print("\x1b[91mEnter a file name.")
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return
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end
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if fs.isDirectory(file) then
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print("\x1b[91mThe specified file is a directory.")
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return
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end
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if file:sub(1, 1) ~= "/" then
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file = fs.concat(shell.getWorkingDirectory(), file)
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end
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local data = ""
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if fs.exists(file) then
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local handle = fs.open(file)
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local tmpdata
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repeat
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tmpdata = handle:read(math.huge or math.maxinteger)
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data = data .. (tmpdata or "")
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until not tmpdata
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end
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local lines = {}
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for line in data:gmatch("[^\r\n]+") do
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table.insert(lines, line)
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end
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local function renderText(xOffset, yOffset)
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gpu.setActiveBuffer(textBuffer)
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gpu.setBackground(0x000000)
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gpu.setForeground(0xFFFFFF)
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gpu.fill(1, 1, resX, resY - 1, " ")
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for i = yOffset + 1, #lines do
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gpu.set(1, i - yOffset, lines[i]:sub(xOffset + 1))
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end
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gpu.setActiveBuffer(0)
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gpu.bitblt(0, 1, 1, resX, resY - 1, textBuffer, 1, 1)
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end
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-- Initialize screen
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renderText(0, 0)
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gpu.setForeground(0x000000)
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gpu.setBackground(0xFFFFFF)
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gpu.set(1, resY, "^X")
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gpu.set(10, resY, "^S")
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gpu.setForeground(0xFFFFFF)
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gpu.setBackground(0x000000)
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gpu.set(4, resY, "Exit")
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gpu.set(13, resY, "Save")
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while true do
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-- Handle events
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local eventArgs = {event.pull("key_down")}
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if eventArgs[1] == "key_down" then
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-- Mouse events might be added later, that's why this if statement is here
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if keyboard.getCtrlDown() then
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-- Special commands
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print(eventArgs[4], keyboard.keys[eventArgs[4]])
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if keyboard.keys[eventArgs[4]] == "x" then
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break
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end
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end
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end
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renderText(0, 0)
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end
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-- Cleanup
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gpu.freeBuffer(textBuffer)
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gpu.setActiveBuffer(0)
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terminal.clear()
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