init: pristine aerc 0.20.0 source

config/config.go

@@ -0,0 +1,178 @@
+package config
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path"
+	"strings"
+
+	"git.sr.ht/~rjarry/aerc/lib/xdg"
+	"github.com/go-ini/ini"
+)
+
+// Set at build time
+var (
+	shareDir   string
+	libexecDir string
+)
+
+func buildDefaultDirs() []string {
+	var defaultDirs []string
+
+	prefixes := []string{
+		xdg.ConfigPath(),
+		"~/.local/libexec",
+		xdg.DataPath(),
+	}
+
+	// Add XDG_CONFIG_HOME and XDG_DATA_HOME
+	for _, v := range prefixes {
+		if v != "" {
+			defaultDirs = append(defaultDirs, xdg.ExpandHome(v, "aerc"))
+		}
+	}
+
+	// Trim null chars inserted post-build by systems like Conda
+	shareDir := strings.TrimRight(shareDir, "\x00")
+	libexecDir := strings.TrimRight(libexecDir, "\x00")
+
+	// Add custom buildtime dirs
+	if libexecDir != "" && libexecDir != "/usr/local/libexec/aerc" {
+		defaultDirs = append(defaultDirs, xdg.ExpandHome(libexecDir))
+	}
+	if shareDir != "" && shareDir != "/usr/local/share/aerc" {
+		defaultDirs = append(defaultDirs, xdg.ExpandHome(shareDir))
+	}
+
+	// Add fixed fallback locations
+	defaultDirs = append(defaultDirs, "/usr/local/libexec/aerc")
+	defaultDirs = append(defaultDirs, "/usr/local/share/aerc")
+	defaultDirs = append(defaultDirs, "/usr/libexec/aerc")
+	defaultDirs = append(defaultDirs, "/usr/share/aerc")
+
+	return defaultDirs
+}
+
+var SearchDirs = buildDefaultDirs()
+
+func installTemplate(root, name string) error {
+	var err error
+	if _, err = os.Stat(root); os.IsNotExist(err) {
+		err = os.MkdirAll(root, 0o755)
+		if err != nil {
+			return err
+		}
+	}
+	var data []byte
+	for _, dir := range SearchDirs {
+		data, err = os.ReadFile(path.Join(dir, name))
+		if err == nil {
+			break
+		}
+	}
+	if err != nil {
+		return err
+	}
+	err = os.WriteFile(path.Join(root, name), data, 0o644)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func parseConf(filename string) error {
+	file, err := ini.LoadSources(ini.LoadOptions{
+		KeyValueDelimiters: "=",
+	}, filename)
+	if err != nil {
+		return err
+	}
+	if err := parseGeneral(file); err != nil {
+		return err
+	}
+	if err := parseFilters(file); err != nil {
+		return err
+	}
+	if err := parseCompose(file); err != nil {
+		return err
+	}
+	if err := parseConverters(file); err != nil {
+		return err
+	}
+	if err := parseViewer(file); err != nil {
+		return err
+	}
+	if err := parseStatusline(file); err != nil {
+		return err
+	}
+	if err := parseOpeners(file); err != nil {
+		return err
+	}
+	if err := parseHooks(file); err != nil {
+		return err
+	}
+	if err := parseUi(file); err != nil {
+		return err
+	}
+	if err := parseTemplates(file); err != nil {
+		return err
+	}
+	return nil
+}
+
+func LoadConfigFromFile(
+	root *string, accts []string, filename, bindPath, acctPath string,
+) error {
+	if root == nil {
+		_root := xdg.ConfigPath("aerc")
+		root = &_root
+	}
+	if filename == "" {
+		filename = path.Join(*root, "aerc.conf")
+		// if it doesn't exist copy over the template, then load
+		if _, err := os.Stat(filename); errors.Is(err, os.ErrNotExist) {
+			fmt.Printf("%s not found, installing the system default\n", filename)
+			if err := installTemplate(*root, "aerc.conf"); err != nil {
+				return err
+			}
+		}
+	}
+	SetConfFilename(filename)
+	if err := parseConf(filename); err != nil {
+		return fmt.Errorf("%s: %w", filename, err)
+	}
+	if err := parseAccounts(*root, accts, acctPath); err != nil {
+		return err
+	}
+	if err := parseBinds(*root, bindPath); err != nil {
+		return err
+	}
+	return nil
+}
+
+func parseLayout(layout string) [][]string {
+	rows := strings.Split(layout, ",")
+	l := make([][]string, len(rows))
+	for i, r := range rows {
+		l[i] = strings.Split(r, "|")
+	}
+	return l
+}
+
+func contains(list []string, v string) bool {
+	for _, item := range list {
+		if item == v {
+			return true
+		}
+	}
+	return false
+}
+
+// warning message related to configuration (deprecation, etc.)
+type Warning struct {
+	Title string
+	Body  string
+}
+
+var Warnings []Warning