golang md to word

During the software development process, we often need to convert text or markup language into other formats, such as converting md text to word documents, in order to better share or display the results of our work with customers or partners. In this article, we will introduce how to use Golang to convert md text to word document through pandoc library.

1. Overview of pandoc

Pandoc is a free open source text converter that can convert text and markup language files to a variety of formats, such as HTML, EPUB, LaTeX, PDF and Microsoft Word document. Pandoc supports almost all markup languages, including Markdown, reStructuredText, HTML, LaTeX, DocBook, MediaWiki, TWiki and Textile. Pandoc supports custom styles and templates and provides many options to control the output.

2. Install Pandoc and Go

Before we start using Pandoc and Go, we need to install them first. The steps to install Pandoc are as follows:

1. Visit https://github.com/jgm/pandoc/releases and download the latest version for your operating system.
2. According to your operating system, unzip the downloaded file.
3. Add the Pandoc binary file to the system's PATH environment variable so that Pandoc can be executed from any location.

The steps to install Go are as follows:

1. Visit https://golang.org/dl/ and download the latest version for your operating system.
2. Install the downloaded Go installer and follow the prompts to complete the installation process.
3. Configure the system's PATH environment variable so that Go commands can be accessed from any location.

3. Install pandocfilters

pandocfilters is a Python library that enables you to write Pandoc filters. In Golang, we can use Python as a Pandoc filter and call it through the pandoc command to complete text conversion. The steps to install pandocfilters are as follows:

1. Open a terminal or command line window and enter the following command:

pip3 install pandocfilters

2. Wait for pandocfilters installation to complete.

4. Write a Golang program

We will use Golang to write a program to convert md text into a word document. The program is mainly divided into two parts: Pandoc filter and Golang program.

1. Pandoc Filter

Enter the following command in a terminal or command line window:

nano pandocfilters/md_to_docx.py

Then paste the following Python code:

#!/usr/bin/env python3

import sys
import panflute as pf
from pandocfilters import toJSONFilter

def action(elem, doc):
    if isinstance(elem, pf.CodeBlock) and 'csljson' in elem.classes:
        return pf.RawBlock(elem.text, format='latex')
    if isinstance(elem, pf.Para) and len(elem.content) == 1 and isinstance(elem.content[0], pf.RawInline):
        return pf.RawBlock(elem.content[0].text, format='latex')
    if isinstance(elem, pf.Str) and len(elem.text) == 1 and ord(elem.text) > 126:
        return pf.RawInline(r'unicode{%04X}' % ord(elem.text), format='latex')
    if isinstance(elem, pf.Str) and len(elem.text) > 1 and all(ord(c) <= 126 for c in elem.text):
        return pf.RawInline(elem.text, format='latex')
    if isinstance(elem, pf.Image) and elem.url.startswith('data:'):
        return pf.Para(pf.Ide

Save and close the file.

2. Golang Program

Enter the following command in the terminal or command line window:

nano md_to_docx.go

Then paste the following Golang code:

package main

import (
    "bytes"
    "io/ioutil"
    "os/exec"
)

func main() {
    // 读取Markdown文件
    data, err := ioutil.ReadFile("test.md")
    if err != nil {
        panic(err)
    }

    // 调用Pandoc过滤器转换Markdown为LaTeX
    cmd := exec.Command("pandoc", "--filter", "pandocfilters/md_to_docx.py", "-f", "markdown", "-t", "latex")
    cmd.Stdin = bytes.NewReader(data)
    out, err := cmd.Output()
    if err != nil {
        panic(err)
    }

    // 调用Pandoc将LaTeX转换为Word文档
    cmd = exec.Command("pandoc", "-f", "latex", "-t", "docx", "--lua-filter=/Users/username/pandocfilters/lua/uncite.lua")
    cmd.Stdin = bytes.NewReader(out)
    out, err = cmd.Output()
    if err != nil {
        panic(err)
    }

    // 将结果保存为Word文档
    err = ioutil.WriteFile("test.docx", out, 0644)
    if err != nil {
        panic(err)
    }
}

Save and close the file.

5. Use Golang program to convert md to word

Enter the following command in the terminal or command line window:

go run md_to_docx.go

The program will read test.md in the current directory file and convert it to test.docx file.

6. Summary

In this article, we introduced how to use Golang and Pandoc to convert Markdown text to Word document. We use Pandoc filters to convert Markdown to LaTeX, and then Pandoc to convert LaTeX to Word documents. We also covered how to use Python and Pandoc filters for text filtering. In this way, we can use Golang to call Python scripts for text conversion. We also covered how to install the Pandoc, Go, and pandocfilters libraries and integrate them into a complete solution.

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