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template.go
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template.go
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package main
import (
"encoding/json"
"fmt"
"log"
"os"
"text/template"
"time"
)
type Person []struct {
Name struct {
Title string `json:"title"`
First string `json:"first"`
Middle string `json:"middle"`
Last string `json:"last"`
} `json:"name"`
Address struct {
Street string `json:"street"`
Zip string `json:"zip"`
Location string `json:"location"`
Country string `json:"country"`
} `json:"address"`
Contact struct {
Phone string `json:"phone"`
Mobile string `json:"mobile"`
Email string `json:"email"`
Web string `json:"web"`
} `json:"contact"`
Gender string `json:"gender"`
Birthday string `json:"birthday"`
}
func shortMiddleName(input string) string {
if len(input) > 0 {
return input[0:1] + "."
}
return ""
}
func getDate() string {
return time.Now().Format("2006-01-02")
}
func main() {
jsonstr, latexstr := getExampleData()
person := Person{}
err := json.Unmarshal([]byte(jsonstr), &person)
if err != nil {
log.Println(err)
}
fmap := template.FuncMap{
"shortMiddleName": shortMiddleName,
"getDate": getDate,
"getPlace": func() string {
return "Munich"
},
}
t := template.New("letter").Delims("<<", ">>").Funcs(fmap)
_, err = t.Parse(latexstr)
if err != nil {
log.Println(err)
}
f, err := os.OpenFile("./template_latex.tex", os.O_WRONLY|os.O_CREATE, 0755)
if err == nil {
err = t.Execute(f, person)
if err != nil {
fmt.Println(err)
}
return
}
fmt.Println(err)
t.Execute(os.Stdout, person)
}
func getExampleData() (string, string) {
jsonstr := `
[
{
"Name": {
"Title": "Dr.",
"First": "John",
"Middle": "F.",
"Last": "Doe"
},
"Address": {
"Street": "Musterweg 2",
"Zip": "12345",
"Location": "Bielefeld",
"Country": "Germany"
},
"Gender": "m",
"Birthday": "1970-01-01"
},
{
"Name": {
"Title": "Prof. Dr.",
"First": "Jane",
"Middle": "A.",
"Last": "Doe"
},
"Address": {
"Street": "Musterweg 3",
"Zip": "12345",
"Location": "Bielefeld",
"Country": "Germany"
},
"Gender": "f",
"Birthday": "1980-01-03"
},
{
"Name": {
"Title": "Dr.",
"First": "Sascha",
"Middle": "",
"Last": "Doe"
},
"Address": {
"Street": "Musterweg 4",
"Zip": "12345",
"Location": "Bielefeld",
"Country": "Germany"
},
"Gender": "d",
"Birthday": "1978-01-02"
}
]`
latexstr := `
\documentclass[
sender,
paper=a4,
version=last,
fontsize=12pt,
DIV=13,
BCOR=0mm]{scrlttr2}
\parskip4mm
\parindent0mm
\usepackage[english,ngerman]{babel}
\usepackage[utf8]{inputenc}
\usepackage{csquotes}
\usepackage{lmodern}
\renewcommand*\familydefault{\sfdefault}
\usepackage[T1]{fontenc}
\usepackage{changepage}
\changepage{+3cm}{}{}{}{}{}{}{}{-5cm}
\LoadLetterOption{sender}
\begin{document}
<< range . >>
\newpage
\setkomavar*{enclseparator}{Appendix}
\setkomavar{subject}{Subject: This is an Example}
\setkomavar{date}{<< getDate >>}
\setkomavar{place}{<< getPlace >>}
\begin{letter}{
<< .Name.Title >> << .Name.First >> << .Name.Middle | shortMiddleName >> << .Name.Last >> \\
<< .Address.Street >>\\
<< .Address.Zip >> << .Address.Location >>
}
\opening{Dear Recipient}
\selectlanguage{english}
Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua.
\closing{kind regards}
<< end >>
\end{letter}
\end{document}
`
return jsonstr, latexstr
}