First commit

colorunit.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"os"
+)
+
+// A colorunit represents a unit in a file. It consists of the character,
+// and the color that the character should be printed out in.
+type colorunit struct {
+	ch  byte
+	clr color
+}
+
+// loadInputFile loads the given file and returns a slice of colorunits,
+// and a slice of bytes (which just contains all the text in the file).
+// The slice of colorunits is used to fill in the color for each character.
+// The slice of bytes is used to perform the regex matching.
+// The color will be set to the current terminal foreground color.
+func loadInputFile(fileName string) ([]colorunit, []byte) {
+	data, err := os.ReadFile(fileName)
+	if err != nil {
+		panic(err)
+	}
+	units := make([]colorunit, len(data))
+	for idx, c := range data {
+		units[idx] = colorunit{byte(c), newColorMust("NONE")}
+	}
+	return units, data
+}
+
+// print is used to print out the character in the given colorunit, according to
+// its color.
+func (unit colorunit) print() {
+	unit.clr.colorObj.Printf("%c", unit.ch)
+	return
+}