make a config filev0.22.7

1 files changed, 116 insertions, 0 deletions

diff --git a/config.go b/config.go
new file mode 100644
index 0000000..a68b562
--- /dev/null
+++ b/config.go
@@ -0,0 +1,116 @@
+// Copyright 2025 WIT.COM Inc Licensed GPL 3.0
+
+package tree
+
+// functions to import and export the protobuf
+// data to and from config files
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"go.wit.com/log"
+)
+
+// load the ~/.config/forge/ files
+func configLoad() *ToolkitConfigs {
+	if os.Getenv("FORGE_CONFIG") == "" {
+		homeDir, _ := os.UserHomeDir()
+		fullpath := filepath.Join(homeDir, ".config/forge")
+		os.Setenv("FORGE_CONFIG", fullpath)
+	}
+
+	c, err := loadText()
+	if err != nil {
+		log.Info("gui toolkit configLoad() error", err)
+	}
+	if c != nil {
+		return c
+	}
+
+	// first time user. make a template config file
+	c = sampleConfig()
+	return c
+}
+
+// makes a sample config (and saves it)
+func sampleConfig() *ToolkitConfigs {
+	all := NewToolkitConfigs()
+	new1 := new(ToolkitConfig)
+	new1.Plugin = "tree"
+	new1.Name = "test"
+	new1.Value = "apple"
+	all.Append(new1)
+
+	all.configSave()
+
+	fmt.Println("first time user. adding an example config file with", len(all.ToolkitConfigs), "repos")
+	return all
+}
+
+// write to ~/.config/forge/ unless ENV{FORGE_CONFIG} is set
+func (c *ToolkitConfigs) configSave() error {
+	s := c.FormatTEXT()
+	configWrite("toolkit.text", []byte(s))
+	return nil
+}
+
+func loadText() (*ToolkitConfigs, error) {
+	// this lets the user hand edit the config
+	data, err := loadFile("toolkit.text")
+	if err != nil {
+		return nil, err
+	}
+	if data == nil {
+		return nil, fmt.Errorf("toolkit.text data was nil")
+	}
+	if len(data) == 0 {
+		return nil, fmt.Errorf("toolkit.text was empty")
+	}
+
+	c := new(ToolkitConfigs)
+
+	// attempt to marshal toolkit.text
+	if err := c.UnmarshalTEXT(data); err != nil {
+		return nil, err
+	}
+	log.Log(TREE, "ConfigLoad()", len(c.ToolkitConfigs), "entries in ~/.config/forge")
+	return c, nil
+}
+
+func loadFile(filename string) ([]byte, error) {
+	fullname := filepath.Join(os.Getenv("FORGE_CONFIG"), filename)
+	data, err := os.ReadFile(fullname)
+	if errors.Is(err, os.ErrNotExist) {
+		// if file does not exist, just return nil. this
+		// will cause ConfigLoad() to try the next config file like "toolkit.text"
+		// because the user might want to edit the .config by hand
+		return nil, nil
+	}
+	if err != nil {
+		// log.Info("open config file :", err)
+		return nil, err
+	}
+	return data, nil
+}
+
+func configWrite(filename string, data []byte) error {
+	fullname := filepath.Join(os.Getenv("FORGE_CONFIG"), filename)
+
+	cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
+	defer cfgfile.Close()
+	if err != nil {
+		log.Warn("open config file :", err)
+		return err
+	}
+	if filename == "toolkit.text" {
+		// add header
+		cfgfile.Write([]byte("\n"))
+		cfgfile.Write([]byte("# you can customize your GUI toolkit user settings here\n"))
+		cfgfile.Write([]byte("\n"))
+	}
+	cfgfile.Write(data)
+	return nil
+}