Define include path in one place

gen/filenames.go

@@ -1,6 +1,8 @@
 package main
 
-import "strconv"
+import (
+	"strconv"
+)
 
 func writeFilenames(charmaps []string, filename string) error {
 	s, err := createCSource(filename)
@@ -10,9 +12,8 @@ func writeFilenames(charmaps []string, filename string) error {
 
 	w := s.writer
 	w.WriteString(header)
-	w.WriteString(
-		"#include \"convert/test.h\"\n" +
-			"const char *const kCharsetFilename[] = {\n")
+	s.include("test.h")
+	w.WriteString("const char *const kCharsetFilename[] = {\n")
 	for _, fn := range charmaps {
 		if fn != "" {
 			w.WriteByte('\t')

gen/main.go

@@ -13,7 +13,10 @@ import (
 	"moria.us/macscript/table"
 )
 
-const header = "/* This file is automatically generated. */\n"
+const (
+	header     = "/* This file is automatically generated. */\n"
+	srcdirname = "convert"
+)
 
 var (
 	flagDest   string
@@ -44,7 +47,7 @@ func mainE() error {
 	}
 	destdir := flagDest
 	if destdir == "" {
-		destdir = filepath.Join(srcdir, "convert")
+		destdir = filepath.Join(srcdir, srcdirname)
 	}
 
 	// Read metadata.

gen/scriptmap.go

@@ -78,8 +78,8 @@ func writeMap(d *scriptdata, m []*scriptmap, filename string) error {
 
 	w := s.writer
 	w.WriteString(header)
+	s.include("convert.h")
 	w.WriteString(
-		"#include \"convert/convert.h\"\n" +
 		"int GetCharmap(int script, int region) {\n" +
 			"switch (script) {\n")
 	for _, s := range m {

gen/source.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"path"
 )
 
 type csource struct {
@@ -62,3 +63,7 @@ func (s *csource) flush() error {
 	s.filename = ""
 	return nil
 }
+
+func (s *csource) include(name string) {
+	fmt.Fprintf(s.writer, "#include \"%s\"\n", path.Join(srcdirname, name))
+}