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.gitdist
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vcf2fritzbox
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go.sum
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vcf2fritzbox: Convert vCard phone numbers to FritzBox phone book format.
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Copyright (C) 2022 Alexander Weinhold
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Unless explicitly stated otherwise, the following applies:
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2 as published by
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the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"encoding/xml"
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"fmt"
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"io"
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"io/ioutil"
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"mime/quotedprintable"
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"os"
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"strings"
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"time"
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)
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func complain(s string) {
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fmt.Fprintln(os.Stderr, s)
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}
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func optExit(err error) {
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(-1)
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}
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}
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// the vCard RFC says, a single logical line can be "folded" to multiple physical lines,
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// so this shit must be done
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type UnfoldingReader struct {
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buf []byte
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i int
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j int
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}
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func NewUnfoldingReader(buf []byte) *UnfoldingReader {
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return &UnfoldingReader{buf, 0, 0}
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}
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func replaceFold(s string) string {
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// Yes, I know and I don't care
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return strings.TrimSpace(strings.ReplaceAll(strings.ReplaceAll(s, "\r\n ", ""), "\r\n\t", ""))
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}
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func (r *UnfoldingReader) ReadLine() (string, bool) {
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readCR := false
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readCRLF := false
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for r.j = r.i; r.j < len(r.buf); r.j++ {
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if r.buf[r.j] == '\r' {
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readCR = true
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} else if readCR && r.buf[r.j] == '\n' {
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readCRLF = true
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} else if readCRLF && r.buf[r.j] != ' ' && r.buf[r.j] != '\t' {
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break
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} else {
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readCRLF = false
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}
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}
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var s string
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if r.i < len(r.buf) {
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s = replaceFold(string(r.buf[r.i:r.j]))
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} else {
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s = ""
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}
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notEOB := (r.i < len(r.buf))
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r.i = r.j
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return s, notEOB
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}
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func vCardValue(line string) string {
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start := strings.LastIndex(line, ":")
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end := strings.LastIndex(line, ";")
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if start == -1 {
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return ""
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}
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if end < start {
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end = len(line) - 1
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}
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return line[start+1 : end+1]
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}
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type Contact struct {
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Name string
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Numbers NumberSet
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}
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type ContactSet []Contact
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var uniqueID int = 1741
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const xmlPreamble = `<?xml version="1.0" encoding="utf-8"?>
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<phonebooks>
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<phonebook>
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<contact><category /><person><realName>AVM Ansage (HD)</realName></person><telephony
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nid="1"><number prio="1" type="work" quickdial="99" id="0">500@hd-telefonie.avm.de</number></telephony><services /><setup /><uniqueid>0</uniqueid></contact><contact><category /><person><realName>HD-Musik</realName></person><telephony
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nid="1"><number prio="1" type="home" quickdial="97" id="0">200@hd-telefonie.avm.de</number></telephony><services /><setup /><uniqueid>1</uniqueid></contact><contact><category /><person><realName>HD-Sprache</realName></person><telephony
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nid="1"><number prio="1" type="home" quickdial="98" id="0">100@hd-telefonie.avm.de</number></telephony><services /><setup /><uniqueid>2</uniqueid></contact>
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`
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const xmlEnd = `</phonebook>
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</phonebooks>
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`
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func (c ContactSet) ToFritzboxXML() string {
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var s strings.Builder
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s.WriteString(xmlPreamble)
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for _, contact := range c {
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contact.WriteFritzboxXML(&s)
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}
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s.WriteString(xmlEnd)
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return s.String()
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}
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func (c *Contact) WriteFritzboxXML(s io.Writer) {
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if c == nil {
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return
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}
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uniqueID++
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fmt.Fprint(s, "<contact><category>0</category><person><realName>")
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xml.Escape(s, []byte(c.Name))
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fmt.Fprintf(s, "</realName></person><telephony nid=\"%d\">\n", len(c.Numbers))
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c.Numbers.WriteFritzboxXML(s)
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fmt.Fprintf(s, "</telephony><services /><setup /><uniqueid>%d</uniqueid></contact>\n\n", uniqueID)
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}
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func (c *Contact) setName(line string) {
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if c == nil {
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c = &Contact{}
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}
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c.Name = vCardValue(line)
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if strings.Count(c.Name, "=") > 1 {
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tmp, err := ioutil.ReadAll(quotedprintable.NewReader(strings.NewReader(c.Name)))
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if err == nil {
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c.Name = string(tmp)
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}
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}
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}
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func (c *Contact) addNumber(line string) {
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if c == nil {
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c = &Contact{}
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}
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tolower := strings.ToLower(line)
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val := vCardValue(line)
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var n Number
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if strings.Contains(tolower, "cell") {
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n = Number{val, "mobile"}
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} else {
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n = Number{val, "home"}
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}
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c.Numbers = append(c.Numbers, n)
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}
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func (c *Contact) setValue(line string) {
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if strings.HasPrefix(line, "FN") {
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c.setName(line)
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} else if strings.HasPrefix(line, "TEL") {
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c.addNumber(line)
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}
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}
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type Number struct {
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Value string
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Kind string
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}
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type NumberSet []Number
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func (n NumberSet) WriteFritzboxXML(s io.Writer) {
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for i, number := range n {
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number.WriteFritzboxXML(s, i)
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}
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}
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func (n *Number) WriteFritzboxXML(s io.Writer, i int) {
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if n == nil {
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return
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}
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var prio int
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if i == 0 {
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prio = 1
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} else {
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prio = 0
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}
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fmt.Fprintf(s, `<number type="%s" prio="%d" id="%d">%s</number>`, n.Kind, prio, i, n.Value)
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fmt.Fprint(s, "\n")
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}
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func GetContacts(buf []byte) (c ContactSet) {
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r := NewUnfoldingReader(buf)
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var current *Contact
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for l, ok := r.ReadLine(); ok; l, ok = r.ReadLine() {
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if l == "BEGIN:VCARD" {
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current = &Contact{}
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} else if l == "END:VCARD" {
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c = append(c, *current)
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current = nil
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} else {
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current.setValue(l)
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}
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}
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if current != nil {
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c = append(c, *current)
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}
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return
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}
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func main() {
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if len(os.Args) != 2 {
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fmt.Fprintln(os.Stderr, "Usage:", os.Args[0], "VCF-FILE")
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os.Exit(-1)
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}
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b, err := ioutil.ReadFile(os.Args[1])
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optExit(err)
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outfile := os.Args[1] + "." + time.Now().Format("20060102-150405") + ".xml"
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err = ioutil.WriteFile(outfile, []byte(GetContacts(b).ToFritzboxXML()), 0644)
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optExit(err)
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fmt.Println(outfile)
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}
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