blob: 36bd6e0752e24881640a953ff9b1646d2d0946e2 [file] [log] [blame]
// Copyright 2017 The Wuffs Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build ignore
package main
// gen.go converts "../base/*" to "data.go".
//
// Invoke it via "go generate".
import (
"bytes"
"fmt"
"go/format"
"io/ioutil"
"os"
"strings"
)
const columns = 1024
func main() {
if err := main1(); err != nil {
os.Stderr.WriteString(err.Error() + "\n")
os.Exit(1)
}
}
func main1() error {
out := &bytes.Buffer{}
out.WriteString("// Code generated by running \"go generate\". DO NOT EDIT.\n")
out.WriteString("\n")
out.WriteString("// Copyright 2017 The Wuffs Authors.\n")
out.WriteString("//\n")
out.WriteString("// Licensed under the Apache License, Version 2.0 (the \"License\");\n")
out.WriteString("// you may not use this file except in compliance with the License.\n")
out.WriteString("// You may obtain a copy of the License at\n")
out.WriteString("//\n")
out.WriteString("// https://www.apache.org/licenses/LICENSE-2.0\n")
out.WriteString("//\n")
out.WriteString("// Unless required by applicable law or agreed to in writing, software\n")
out.WriteString("// distributed under the License is distributed on an \"AS IS\" BASIS,\n")
out.WriteString("// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n")
out.WriteString("// See the License for the specific language governing permissions and\n")
out.WriteString("// limitations under the License.\n")
out.WriteString("\n")
out.WriteString("package data\n")
out.WriteString("\n")
if err := genData(out); err != nil {
return err
}
formatted, err := format.Source(out.Bytes())
if err != nil {
return err
}
return ioutil.WriteFile("data.go", formatted, 0644)
}
func genData(out *bytes.Buffer) error {
files := []struct {
filename, varname string
}{
{"../base/all-impl.c", "BaseAllImplC"},
{"../base/fundamental-private.h", "BaseFundamentalPrivateH"},
{"../base/fundamental-public.h", "BaseFundamentalPublicH"},
{"../base/memory-private.h", "BaseMemoryPrivateH"},
{"../base/memory-public.h", "BaseMemoryPublicH"},
{"../base/image-private.h", "BaseImagePrivateH"},
{"../base/image-public.h", "BaseImagePublicH"},
{"../base/io-private.h", "BaseIOPrivateH"},
{"../base/io-public.h", "BaseIOPublicH"},
{"../base/range-private.h", "BaseRangePrivateH"},
{"../base/range-public.h", "BaseRangePublicH"},
{"../base/strconv-private.h", "BaseStrConvPrivateH"},
{"../base/strconv-public.h", "BaseStrConvPublicH"},
{"../base/token-private.h", "BaseTokenPrivateH"},
{"../base/token-public.h", "BaseTokenPublicH"},
{"../base/floatconv-submodule-code.c", "BaseFloatConvSubmoduleCodeC"},
{"../base/floatconv-submodule-data.c", "BaseFloatConvSubmoduleDataC"},
{"../base/intconv-submodule.c", "BaseIntConvSubmoduleC"},
{"../base/magic-submodule.c", "BaseMagicSubmoduleC"},
{"../base/pixconv-submodule.c", "BasePixConvSubmoduleC"},
{"../base/utf8-submodule.c", "BaseUTF8SubmoduleC"},
{"../auxiliary/base.cc", "AuxBaseCc"},
{"../auxiliary/base.hh", "AuxBaseHh"},
{"../auxiliary/cbor.cc", "AuxCborCc"},
{"../auxiliary/cbor.hh", "AuxCborHh"},
{"../auxiliary/image.cc", "AuxImageCc"},
{"../auxiliary/image.hh", "AuxImageHh"},
{"../auxiliary/json.cc", "AuxJsonCc"},
{"../auxiliary/json.hh", "AuxJsonHh"},
}
prefixAfterEditing := []byte("// After editing this file,")
prefixCopyright := []byte("// Copyright ")
copyright := []byte(nil)
for _, f := range files {
in, err := ioutil.ReadFile(f.filename)
if err != nil {
return err
}
if !bytes.HasPrefix(in, prefixAfterEditing) {
return fmt.Errorf("%s's contents do not start with %q", f.filename, prefixAfterEditing)
}
if i := bytes.Index(in, []byte("\n\n")); i >= 0 {
in = in[i+2:]
}
if !bytes.HasPrefix(in, prefixCopyright) {
return fmt.Errorf("%s's contents do not start with %q", f.filename, prefixCopyright)
}
if i := bytes.Index(in, []byte("\n\n")); i >= 0 {
if len(copyright) == 0 {
// Take only one of the two trailing '\n's.
copyright = in[:i+1]
}
in = in[i+2:]
}
fmt.Fprintf(out, "const %s = \"\" +\n", f.varname)
writeStringConst(out, in)
out.WriteString("\"\"\n\n")
}
fmt.Fprintf(out, "var AuxNonBaseCcFiles = []string{\n")
for _, f := range files {
if strings.HasPrefix(f.varname, "Aux") &&
strings.HasSuffix(f.varname, "Cc") &&
(f.varname != "AuxBaseCc") {
fmt.Fprintf(out, "%s,\n", f.varname)
}
}
fmt.Fprintf(out, "}\n\n")
fmt.Fprintf(out, "var AuxNonBaseHhFiles = []string{\n")
for _, f := range files {
if strings.HasPrefix(f.varname, "Aux") &&
strings.HasSuffix(f.varname, "Hh") &&
(f.varname != "AuxBaseHh") {
fmt.Fprintf(out, "%s,\n", f.varname)
}
}
fmt.Fprintf(out, "}\n\n")
fmt.Fprintf(out, "const BaseCopyright = \"\" +\n")
writeStringConst(out, copyright)
out.WriteString("\"\"\n\n")
return nil
}
var dashDashDashDash = []byte("// ----")
func writeStringConst(out *bytes.Buffer, s []byte) {
for len(s) > 0 {
remaining := []byte(nil)
if i := bytes.Index(s[1:], dashDashDashDash); i >= 0 {
s, remaining = s[:i+1], s[i+1:]
}
for len(s) > 0 {
t := s
if len(t) > columns {
t = t[:columns]
}
s = s[len(t):]
fmt.Fprintf(out, "%q +\n", t)
}
s = remaining
if len(s) > 0 {
out.WriteString("\"\" +\n")
}
}
}