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// Copyright 2021 Google LLC
//
// 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
//
// http://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.
package mk2rbc
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"sort"
"strconv"
"strings"
mkparser "android/soong/androidmk/parser"
)
const codenamePrefix = "PLATFORM_VERSION_CODENAME."
// ParseVersionDefaults extracts version settings from the given file
// and returns the map.
func ParseVersionDefaults(path string) (map[string]string, error) {
contents, err := ioutil.ReadFile(path)
if err != nil {
return nil, err
}
parser := mkparser.NewParser(path, bytes.NewBuffer(contents))
nodes, errs := parser.Parse()
if len(errs) > 0 {
for _, e := range errs {
fmt.Fprintln(os.Stderr, "ERROR:", e)
}
return nil, fmt.Errorf("cannot parse %s", path)
}
result := map[string]string{
"DEFAULT_PLATFORM_VERSION": "",
"MAX_PLATFORM_VERSION": "",
"MIN_PLATFORM_VERSION": "A",
"PLATFORM_BASE_SDK_EXTENSION_VERSION": "",
"PLATFORM_SDK_EXTENSION_VERSION": "",
"PLATFORM_SDK_VERSION": "",
"PLATFORM_SECURITY_PATCH": "",
"PLATFORM_VERSION_LAST_STABLE": "",
}
for _, node := range nodes {
asgn, ok := node.(*mkparser.Assignment)
if !(ok && asgn.Name.Const()) {
continue
}
s := asgn.Name.Strings[0]
_, ok = result[s]
if !ok {
ok = strings.HasPrefix(s, codenamePrefix)
}
if !ok {
continue
}
v := asgn.Value
if !v.Const() {
return nil, fmt.Errorf("the value of %s should be constant", s)
}
result[s] = strings.TrimSpace(v.Strings[0])
}
return result, nil
}
func genericValue(s string) interface{} {
if ival, err := strconv.ParseInt(s, 0, 0); err == nil {
return ival
}
return s
}
// VersionDefaults generates the contents of the version_defaults.rbc file
func VersionDefaults(values map[string]string) string {
var sink bytes.Buffer
var lines []string
var codenames []string
for name, value := range values {
if strings.HasPrefix(name, codenamePrefix) {
codenames = append(codenames,
fmt.Sprintf("%q: %q", strings.TrimPrefix(name, codenamePrefix), value))
} else {
// Print numbers as such
lines = append(lines, fmt.Sprintf(" %s = %#v,\n",
strings.ToLower(name), genericValue(value)))
}
}
sort.Strings(lines)
sort.Strings(codenames)
sink.WriteString("version_defaults = struct(\n")
for _, l := range lines {
sink.WriteString(l)
}
sink.WriteString(" codenames = { ")
sink.WriteString(strings.Join(codenames, ", "))
sink.WriteString(" }\n)\n")
return sink.String()
}
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