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package main
import (
"path/filepath"
"strings"
"bufio"
"fmt"
"io"
"os"
)
func getBaseConfigDir() (path string) {
path = os.Getenv("XDG_CONFIG_HOME")
if path != "" {
return
}
path = os.Getenv("APPDATA")
if path != "" {
return
}
if os.Getenv("HOME") != "" {
return filepath.Join(os.Getenv("HOME"), ".config")
} else {
return filepath.Join(filepath.Base(os.Args[0]), "config")
}
}
func getConfigDir() string {
return filepath.Join(getBaseConfigDir(), "talk")
}
func (a *application) executeScript(rd io.Reader) error {
var (
command strings.Builder
br = bufio.NewReader(rd)
)
for {
command.Reset()
command.WriteRune('/')
for {
c, _, err := br.ReadRune()
if err == io.EOF {
break
}
if err != nil {
return fmt.Errorf("error reading configuration: %s", err)
}
if c == '/' && command.Len() == 1 {
continue
}
if c == '\\' {
command.WriteRune(c)
c, _, _ = br.ReadRune()
} else if c == '#' {
for c != '\n' {
c, _, err = br.ReadRune()
if err != nil {
break
}
}
} else if c == '\n' {
break
}
command.WriteRune(c)
}
if strings.TrimSpace(command.String()) != "" {
a.processCommand(command.String())
}
_, err := br.Peek(1)
if err == io.EOF {
break
}
}
return nil
}
func (a *application) executeConfig(name string) error {
file, err := os.Open(filepath.Join(getConfigDir(), name))
if err != nil {
return fmt.Errorf("error reading configuration: %s", err)
}
return a.executeScript(file)
}
func (a *application) executeConfigOptional(name string) (err error) {
err = a.executeConfig(name)
if os.IsNotExist(err) {
return nil
}
return
}
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