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global.go
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global.go
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// Copyright 2023 Cisco Systems, Inc. and its affiliates
//
// 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.
//
// SPDX-License-Identifier: Apache-2.0
package cmdutils
import (
"github.com/cisco-open/go-lanai/pkg/log"
"os"
"path"
"path/filepath"
)
const (
ModulePath = "github.com/cisco-open/go-lanai"
)
var (
logger = log.New("Build")
GlobalArgs = Global{
WorkingDir: DefaultWorkingDir(),
TmpDir: DefaultTemporaryDir(),
OutputDir: DefaultOutputDir(),
}
)
type Global struct {
WorkingDir string `flag:"workspace,w" desc:"working directory containing 'go.mod'. All non-absolute paths are relative to this directory"`
TmpDir string `flag:"tmp-dir" desc:"temporary directory."`
OutputDir string `flag:"output,o" desc:"output directory. All non-absolute paths for output are relative to this directory"`
Verbose bool `flag:"debug" desc:"show debug information"`
}
func (g Global) AbsPath(base, path string) string {
if filepath.IsAbs(path) {
return filepath.Clean(path)
}
return filepath.Clean(base + "/" + path)
}
func DefaultWorkingDir() string {
return goModDir()
}
func DefaultTemporaryDir() string {
const relative = ".tmp"
return PathRelativeToModuleDir(relative)
}
func DefaultOutputDir() string {
const relative = "dist"
return PathRelativeToModuleDir(relative)
}
func PathRelativeToModuleDir(relativePath string) string {
if path.IsAbs(relativePath) {
panic("PathRelativeToModuleDir only takes relative path")
}
base := goModDir()
if base == "" {
return DefaultWorkingDir() + "/" + relativePath
}
return base + "/" + relativePath
}
func currentDir() string {
currDir, e := os.Getwd()
if e != nil {
panic(e)
}
return currDir
}
// goModDir works from current directory backward along the FS tree until find go.mod file
// if root directory is hit and it's still not found, return the currentDir
func goModDir() string {
currDir, e := os.Getwd()
if e != nil {
panic(e)
}
for dir := currDir; dir != "" && dir != "."; dir = filepath.Dir(dir) {
gomodPath := dir + "/go.mod"
if _, e := os.Stat(gomodPath); e == nil {
return dir
}
if dir == "/" {
break
}
}
return currentDir()
}