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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
// Author: arnej
package jvm
import (
"bytes"
"fmt"
"os"
"sort"
"strings"
"github.com/vespa-engine/vespa/client/go/internal/admin/trace"
"github.com/vespa-engine/vespa/client/go/internal/util"
)
// quote as specified in JDK source file java.base/share/classes/java/util/Properties.java
func propQuote(s string, buf *bytes.Buffer) {
inKey := true
inVal := false
for _, ch := range s {
needQ := false
switch {
case ch == ' ':
needQ = !inVal
case ch == ':':
needQ = inKey
case ch < ' ':
needQ = true
case ch > '~':
needQ = true
case ch == '\\':
buf.WriteString("\\")
case ch == '=':
inKey = false
default:
inVal = !inKey
}
if needQ {
fmt.Fprintf(buf, "\\u%04X", ch)
} else {
buf.WriteRune(ch)
}
}
}
func envAsProperties(envv []string) []byte {
suppress := map[string]bool{
"_": true,
"HISTCONTROL": true,
"HISTSIZE": true,
"IFS": true,
"LESSOPEN": true,
"LOADEDMODULES": true,
"LS_COLORS": true,
"MAIL": true,
"MODULEPATH": true,
"MODULEPATH_modshare": true,
"MODULESHOME": true,
"MODULES_CMD": true,
"MODULES_RUN_QUARANTINE": true,
"OLDPWD": true,
"PCP_DIR": true,
"PS1": true,
"PWD": true,
"SHLVL": true,
"SSH_AUTH_SOCK": true,
"SSH_CLIENT": true,
"SSH_CONNECTION": true,
"SSH_TTY": true,
"S_COLORS": true,
"which_declare": true,
"": true,
}
var buf bytes.Buffer
buf.WriteString("# properties converted from environment variables\n")
sort.Strings(envv)
for _, env := range envv {
parts := strings.Split(env, "=")
if len(parts) >= 2 {
varName := parts[0]
if suppress[varName] || strings.Contains(varName, "%%") {
continue
}
if strings.Contains(env, "\n") {
continue
}
propQuote(env, &buf)
buf.WriteRune('\n')
} else {
trace.Warning("environment value without '=':", env)
}
}
return buf.Bytes()
}
func writeEnvAsProperties(envv []string, propsFile string) {
if propsFile == "" {
panic("missing propsFile")
}
trace.Trace("write props file:", propsFile)
err := os.WriteFile(propsFile, envAsProperties(envv), 0600)
if err != nil {
util.JustExitWith(err)
}
}
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