added configuration file and logging

1 files changed, 83 insertions, 0 deletions

diff --git a/config.go b/config.go
new file mode 100644
index 0000000..729815f
--- /dev/null
+++ b/config.go
@@ -0,0 +1,83 @@
+package main
+
+
+import (
+	"fmt"
+	"os"
+	"bufio"
+	"regexp"
+	"strings"
+	"log"
+)
+
+
+type Config struct {
+	host string
+	port string
+	paste_dir string
+	templ_dir string
+	log_fname string
+	logger *log.Logger
+}
+
+
+func (c Config) String() string {
+
+	var s string
+
+	s+= "Host: " + c.host + "\n"
+	s+= "Port: " + c.port + "\n"
+	s+= "paste_dir: " + c.paste_dir + "\n"
+	s+= "templ_dir: " + c.templ_dir + "\n"
+
+	return s
+	
+}
+
+func parse_config (fname string, c *Config) error {
+
+	
+	f, err := os.Open(fname);
+	if  err != nil {
+		return err
+	}
+
+	r := bufio.NewScanner(f)
+
+	line := 0
+	for r.Scan (){
+		s := r.Text()
+		line += 1
+		if matched, _ := regexp.MatchString("^([ \t]*)$", s); matched != true {
+			// it's not a blank line
+			if matched, _ := regexp.MatchString("^#", s); matched != true  {
+				// This is not a comment...
+				if matched, _ := regexp.MatchString("^([a-z_]+)=.*", s);  matched == true {
+					// and contains an assignment
+					fields := strings.Split(s, "=")
+					switch fields[0]{
+					case "host":
+						c.host = fields[1]
+					case "port":
+						c.port = fields[1]
+					case "paste_dir":
+						c.paste_dir = fields[1]					
+					case "templ_dir":
+						c.templ_dir = fields[1]
+					case "log_fname":
+						c.log_fname = fields[1]
+					default:
+						fmt.Fprintf(os.Stderr, "Error reading config file %s at line %d: unknown variable '%s'\n",
+							fname, line, fields[0])
+					}
+				} else {
+					fmt.Fprintf(os.Stderr, "Error reading config file %s at line %d: unknown statement '%s'\n",
+						fname, line, s)
+				}
+			}
+		}
+	}
+	return nil
+}
+
+