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gen.go
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gen.go
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// +build ignore
// This command generates the Go sources for the ROMS stored in the "rom" package
package main
import (
"bytes"
"fmt"
"go/format"
"io/ioutil"
"log"
"os"
"path/filepath"
"sort"
"strings"
"textmod.es/font/rom"
)
type Maps []*rom.Map
func (m Maps) Len() int { return len(m) }
func (m Maps) Less(i, j int) bool { return m[i].Name < m[j].Name }
func (m Maps) Swap(i, j int) { m[i], m[j] = m[j], m[i] }
func main() {
d, err := os.Open("./rom")
if err != nil {
log.Fatalln(err)
}
names, err := d.Readdirnames(-1)
if err != nil {
log.Fatalln(err)
}
var maps Maps
for _, file := range names {
for _, collection := range rom.ROMs {
if collection.Match(file) {
m, err := collection.Parse(filepath.Join(d.Name(), file+".map"))
if err != nil {
log.Fatalf("%s: %v\n", file, err)
}
log.Println("parsed", m)
maps = append(maps, m)
}
}
}
sort.Sort(maps)
var (
faces = map[string][]string{}
files = map[string]string{}
packages = map[string]string{}
)
for _, m := range maps {
log.Printf("%s in %s", m.Name, m.PackageFile())
var (
file = m.PackageFile()
dir = filepath.Dir(file)
pkg = filepath.Base(dir)
)
if _, err := os.Stat(dir); err != nil {
if os.IsNotExist(err) {
if err = os.MkdirAll(dir, 0755); err != nil {
log.Fatalln(err)
}
} else {
log.Fatalln(err)
}
}
w := new(bytes.Buffer)
w.WriteString(strings.Replace(preamble, "package name", "package "+pkg, 1))
fmt.Fprintln(w, "var (")
for i, comment := range m.Comment {
if i == 0 {
fmt.Fprintln(w, " //", m.ExportName(), comment)
} else {
fmt.Fprintln(w, " //", comment)
}
}
fmt.Fprintf(w, " %s = &font.Bitmap{\n", m.ExportName())
fmt.Fprintf(w, " Data: %s,\n", m.InternalName())
fmt.Fprintf(w, " Size: image.Point{%d, %d},\n", m.Size.X, m.Size.Y)
fmt.Fprintf(w, " Advance: %d,\n", m.Size.X+int(m.Advance))
fmt.Fprintf(w, " Alpha: color.Alpha{0xff},\n")
fmt.Fprintf(w, " CodePoint: %sCodePoint,\n", m.InternalName())
fmt.Fprintf(w, " Encoding: \"%s\",\n", m.Encoding)
fmt.Fprintf(w, " Replacement: %q,\n", m.Replacement)
fmt.Fprintf(w, " }\n")
fmt.Fprintf(w, " %s = []uint16{\n", m.InternalName())
for x := 0; x < len(m.Data); x += 8 {
fmt.Fprint(w, " ")
for _, b := range m.Data[x : x+8] {
fmt.Fprintf(w, "%#02x,", b)
}
fmt.Fprint(w, "\n")
}
fmt.Fprintf(w, " }\n")
fmt.Fprintf(w, " %sCodePoint = []rune{\n", m.InternalName())
for x := 0; x < len(m.CodePoints); x += 8 {
for _, c := range m.CodePoints[x : x+8] {
fmt.Fprintf(w, "%#04x,", c)
}
fmt.Fprint(w, "\n")
}
fmt.Fprintf(w, " }\n\n")
fmt.Fprintln(w, ")")
b := w.Bytes()
if b, err = format.Source(b); err != nil {
log.Fatalln(err, w.String())
}
if err = ioutil.WriteFile(file, b, 0644); err != nil {
log.Fatalln(err)
}
face := m.FontName()
faces[face] = append(faces[face], m.ExportName())
files[face] = m.FacePackageFile()
packages[face] = pkg
}
for face, fonts := range faces {
if len(fonts) == 1 || fonts[0] == face {
continue
}
w := new(bytes.Buffer)
w.WriteString(strings.Replace(preambleFace, "package name", "package "+packages[face], 1))
fmt.Fprintf(w, "var %s = font.BitmapFont{\n", face)
for _, f := range fonts {
fmt.Fprintf(w, " %s,\n", f)
}
fmt.Fprintf(w, "}\n")
b := w.Bytes()
if b, err = format.Source(b); err != nil {
log.Fatalln(err, w.String())
}
if err = ioutil.WriteFile(files[face], b, 0644); err != nil {
log.Fatalln(err)
}
}
}
const preamble = `// generated by go generate; DO NOT EDIT
// go:generate go run gen.go
package name
import (
"image"
"image/color"
"textmod.es/font"
)
`
const preambleFace = `// generated by go generate; DO NOT EDIT
// go:generate go run gen.go
package name
import (
"textmod.es/font"
)
`