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// Copyright 2016 The appc 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
//
// 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 main
import (
"flag"
"os/exec"
"sort"
"strings"
"github.com/appc/goaci/proj2aci"
)
// stringSliceWrapper is an implementation of flag.Value
// interface. It is basically a proxy that append strings to already
// existing strings slice.
type stringSliceWrapper struct {
vector *[]string
}
func (wrapper *stringSliceWrapper) String() string {
if len(*wrapper.vector) > 0 {
return `["` + strings.Join(*wrapper.vector, `" "`) + `"]`
}
return "[]"
}
func (wrapper *stringSliceWrapper) Set(str string) error {
*wrapper.vector = append(*wrapper.vector, str)
return nil
}
// commonParameterMapper maps command line parameters to
// proj2aci.CommonConfiguration.
type commonParameterMapper struct {
custom proj2aci.BuilderCustomizations
config *proj2aci.CommonConfiguration
execWrapper stringSliceWrapper
assetWrapper stringSliceWrapper
}
func (mapper *commonParameterMapper) setupCommonParameters(parameters *flag.FlagSet) {
// --exec
mapper.execWrapper.vector = &mapper.config.Exec
parameters.Var(&mapper.execWrapper, "exec", "Parameters passed to app, can be used multiple times")
// --use-binary
parameters.StringVar(&mapper.config.UseBinary, "use-binary", "", "Which executable to put in ACI image")
// --asset
mapper.assetWrapper.vector = &mapper.config.Assets
parameters.Var(&mapper.assetWrapper, "asset", "Additional assets, can be used multiple times; format: "+proj2aci.GetAssetString("<path in ACI rootfs>", "<local path>")+"; available placeholders for use: "+mapper.getPlaceholders())
// --keep-tmp-dir
parameters.BoolVar(&mapper.config.KeepTmpDir, "keep-tmp-dir", false, "Do not delete temporary directory used for creating ACI")
// --tmp-dir
parameters.StringVar(&mapper.config.TmpDir, "tmp-dir", "", "Use this directory for build a project and an ACI image")
// --reuse-tmp-dir
parameters.StringVar(&mapper.config.ReuseTmpDir, "reuse-tmp-dir", "", "Use this already existing directory with built project to build an ACI image; ACI specific contents in this directory are removed before reuse")
}
func (mapper *commonParameterMapper) getPlaceholders() string {
mapping := mapper.custom.GetPlaceholderMapping()
placeholders := make([]string, 0, len(mapping))
for p := range mapping {
placeholders = append(placeholders, p)
}
sort.Strings(placeholders)
return strings.Join(placeholders, ", ")
}
func (mapper *commonParameterMapper) Name() string {
return mapper.custom.Name()
}
func (mapper *commonParameterMapper) GetBuilderCustomizations() proj2aci.BuilderCustomizations {
return mapper.custom
}
// goParameterMapper maps command line parameters to
// proj2aci.GoConfiguration.
type goParameterMapper struct {
commonParameterMapper
goCustom *proj2aci.GoCustomizations
}
func newGoParameterMapper() parameterMapper {
custom := &proj2aci.GoCustomizations{}
return &goParameterMapper{
commonParameterMapper: commonParameterMapper{
custom: custom,
config: custom.GetCommonConfiguration(),
},
goCustom: custom,
}
}
func (mapper *goParameterMapper) SetupParameters(parameters *flag.FlagSet) {
// common params
mapper.setupCommonParameters(parameters)
// --go-binary
goDefaultBinaryDesc := "Go binary to use"
gocmd, err := exec.LookPath("go")
if err != nil {
goDefaultBinaryDesc += " (default: none found in $PATH, so it must be provided)"
} else {
goDefaultBinaryDesc += " (default: whatever go in $PATH)"
}
parameters.StringVar(&mapper.goCustom.Configuration.GoBinary, "go-binary", gocmd, goDefaultBinaryDesc)
// --go-path
parameters.StringVar(&mapper.goCustom.Configuration.GoPath, "go-path", "", "Custom GOPATH (default: a temporary directory)")
}
// cmakeParameterMapper maps command line parameters to
// proj2aci.CmakeConfiguration.
type cmakeParameterMapper struct {
commonParameterMapper
cmakeCustom *proj2aci.CmakeCustomizations
cmakeParamWrapper stringSliceWrapper
}
func newCmakeParameterMapper() parameterMapper {
custom := &proj2aci.CmakeCustomizations{}
return &cmakeParameterMapper{
commonParameterMapper: commonParameterMapper{
custom: custom,
config: custom.GetCommonConfiguration(),
},
cmakeCustom: custom,
}
}
func (mapper *cmakeParameterMapper) SetupParameters(parameters *flag.FlagSet) {
// common params
mapper.setupCommonParameters(parameters)
// --binary-dir
parameters.StringVar(&mapper.cmakeCustom.Configuration.BinDir, "binary-dir", "", "Look for binaries in this directory (relative to install path, eg passing /usr/local/mysql/bin would look for a binary in <tmpdir>/install/usr/local/mysql/bin")
// --reuse-src-dir
parameters.StringVar(&mapper.cmakeCustom.Configuration.ReuseSrcDir, "reuse-src-dir", "", "Instead of downloading a project, use this path with already downloaded sources")
// --cmake-param
mapper.cmakeParamWrapper.vector = &mapper.cmakeCustom.Configuration.CmakeParams
parameters.Var(&mapper.cmakeParamWrapper, "cmake-param", "Parameters passed to cmake, can be used multiple times")
}
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