First Commit

toolchain/lib/log.lua

@@ -0,0 +1,60 @@
+-- log.lua -- always-verbose colored logging for zeta-makepkg.
+--
+-- Every operation is printed so the user sees exactly what is happening.
+-- Colors are disabled when TERM=dumb or NO_COLOR is set.
+
+local log = {}
+
+local function wants_color()
+  local t = os.getenv("TERM")
+  if not t or t == "" or t == "dumb" then return false end
+  if os.getenv("NO_COLOR") then return false end
+  return true
+end
+
+local COLOR = wants_color()
+
+local C = {
+  reset  = "\27[0m",
+  cyan   = "\27[36m",
+  green  = "\27[32m",
+  yellow = "\27[33m",
+  red    = "\27[31m",
+  dim    = "\27[2m",
+}
+
+local function paint(color, s)
+  if not COLOR then return s end
+  return C[color] .. s .. C.reset
+end
+
+function log.step(msg)
+  print(paint("cyan", "==> " .. msg))
+end
+
+function log.ok(msg)
+  print(paint("green", " ok  " .. msg))
+end
+
+function log.warn(msg)
+  io.stderr:write(paint("yellow", "warn ") .. msg .. "\n")
+end
+
+function log.error(msg)
+  io.stderr:write(paint("red", "error") .. " " .. msg .. "\n")
+end
+
+function log.info(msg)
+  print("  -  " .. msg)
+end
+
+function log.detail(msg)
+  print(paint("dim", "  .  " .. msg))
+end
+
+function log.fatal(msg)
+  log.error(msg)
+  os.exit(1)
+end
+
+return log