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context.go
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/
context.go
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// Copyright (C) 2023 Shanhu Tech Inc.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU Affero General Public License as published by the
// Free Software Foundation, either version 3 of the License, or (at your
// option) any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
// for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package smake
import (
"fmt"
"io"
"os"
"os/exec"
"strings"
)
type context struct {
dir string
modRoot string
env []string
errLog io.Writer
}
func newContext(gopath, modRoot, dir string) *context {
var env []string
for _, v := range []string{
"PATH", "HOME", "SSH_AUTH_SOCK",
} {
if s := os.Getenv(v); s != "" {
env = append(env, fmt.Sprintf("%s=%s", v, s))
}
}
env = append(env, "GO111MODULE=on")
if gopath != "" {
env = append(env, fmt.Sprintf("GOPATH=%s", gopath))
}
return &context{
dir: dir,
modRoot: modRoot,
env: env,
errLog: os.Stderr,
}
}
func (c *context) workDir() string { return c.dir }
func (c *context) modRootDir() string { return c.modRoot }
func (c *context) atModRoot() bool { return c.dir == c.modRoot }
type execConfig struct {
Stdout io.Writer
Stderr io.Writer
}
func (c *context) execPkgs(
pkgs []*relPkg, args []string, config *execConfig,
) error {
line := strings.Join(args, " ")
fmt.Println(line)
if len(pkgs) > 0 {
for _, pkg := range pkgs {
args = append(args, pkg.rel)
}
}
p, err := exec.LookPath(args[0])
if err != nil {
return err
}
var stdout, stderr io.Writer
if config != nil {
stdout, stderr = config.Stdout, config.Stderr
}
if stdout == nil {
stdout = os.Stdout
}
if stderr == nil {
stderr = os.Stderr
}
cmd := exec.Cmd{
Path: p,
Args: args,
Dir: c.dir,
Stdout: stdout,
Stderr: stderr,
Env: c.env,
}
return cmd.Run()
}
func (c *context) logf(f string, args ...interface{}) {
fmt.Fprintf(c.errLog, f, args...)
}
func (c *context) logln(args ...interface{}) {
fmt.Fprintln(c.errLog, args...)
}