[type:feat] support properties (#102)

* [type:feat] support properties

Author: moremind

core/idutil.go

@@ -1,3 +1,20 @@
+/*
+ * Copyright (c) 2022, AcmeStack
+ * All rights reserved.
+ *
+ * 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 core
 
 import (

core/idutil_test.go

@@ -1,3 +1,20 @@
+/*
+ * Copyright (c) 2022, AcmeStack
+ * All rights reserved.
+ *
+ * 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 core
 
 import (

core/props.properties

@@ -0,0 +1,2 @@
+id=1
+name="xiaoming"

core/propsutil.go

@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2022, AcmeStack
+ * All rights reserved.
+ *
+ * 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 core
+
+import (
+	"bufio"
+	"github.com/acmestack/godkits/gox/stringsx"
+	"io"
+	"os"
+	"strings"
+)
+
+type Properties struct {
+	m map[string]string
+}
+
+func NewProperties() *Properties {
+	return &Properties{
+		m: map[string]string{},
+	}
+}
+
+// GetConfigFromFile get map from file
+//  @param path file path
+//  @return map[string]string
+//  usage:
+//  p := NewProperties()
+//  p.GetConfigFromFile(your path)
+func (p *Properties) GetConfigFromFile(path string) (err error) {
+	f, err := os.Open(path)
+	defer f.Close()
+	if err != nil {
+		panic(err)
+	}
+
+	r := bufio.NewReader(f)
+	for {
+		b, _, err := r.ReadLine()
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			panic(err)
+		}
+		s := strings.TrimSpace(string(b))
+		index := strings.Index(s, "=")
+		if index < 0 {
+			continue
+		}
+		key := strings.TrimSpace(s[:index])
+		if len(key) == 0 {
+			continue
+		}
+		value := strings.TrimSpace(s[index+1:])
+		if len(value) == 0 {
+			continue
+		}
+		_, _, err = p.put(key, value)
+	}
+	return nil
+}
+
+// Get load value by key from Properties
+//  @receiver p properties
+//  @param key the key
+//  @return value the value
+//  @return ok status
+func (p *Properties) Get(key string) (value string, ok bool) {
+	_, ok = p.m[key]
+	if !ok {
+		return "", false
+	}
+	return p.m[key], true
+}
+
+// put put key,value into properties
+//  @receiver p properties
+//  @param key key
+//  @param value value
+//  @return preValue pre
+//  @return ok status
+//  @return err error
+func (p *Properties) put(key, value string) (preValue string, ok bool, err error) {
+	if stringsx.Empty(key) {
+		return "", false, nil
+	}
+	preValue, ok = p.Get(key)
+	// check key and value
+	if !ok {
+		p.m[key] = value
+		return preValue, true, nil
+	}
+	panic("key repeat!")
+}

core/propsutils_test.go

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2022, AcmeStack
+ * All rights reserved.
+ *
+ * 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 core
+
+import (
+	"github.com/acmestack/godkits/assert"
+	"testing"
+)
+
+func TestGetConfigFromFile(t *testing.T) {
+	p := NewProperties()
+	_ = p.GetConfigFromFile("props.properties")
+	val, ok := p.Get("id")
+	assert.IsTrue(t, ok)
+	assert.Equal(t, 1, val)
+	val2, ok2 := p.Get("name")
+	assert.IsTrue(t, ok2)
+	assert.Equal(t, "xiaoming", val2)
+	val3, ok3 := p.Get("mm")
+	assert.IsFalse(t, ok3)
+	assert.IsTrue(t, val3 == "")
+}