将额外的Lua-Filter添加到YAML中

Question

我正在尝试在YAML中添加一个额外的Lua-Filter：

---
title: "TITLE"
subtitle: "SUBTITLE"
date: "07/04/2022" 
output:
  pdf_document:
    pandoc_args: 
      - --lua-filter=/Users/user/.local/share/pandoc/filters/wordcount.lua
    latex_engine: pdflatex
    includes:
      in_header: style.sty
    #keep_tex:  true
  bookdown::pdf_book:
    citation_package: biblatex
bibliography: literature.bib
csl: my.csl
lang: de
fontsize: 12pt
---

好的，现在，当我尝试编织文档时，我会得到这个erorr：

/usr/local/bin/pandoc +RTS -K512m -RTS mother.knit.md --to latex --from markdown+autolink_bare_uris+tex_math_single_backslash --output mother.tex --lua-filter /Users/user/Library/R/x86_64/4.1/library/rmarkdown/rmarkdown/lua/pagebreak.lua --lua-filter /Users/user/Library/R/x86_64/4.1/library/rmarkdown/rmarkdown/lua/latex-div.lua --self-contained --highlight-style tango --pdf-engine pdflatex --include-in-header style.sty --variable graphics --lua-filter=/Users/user/.local/share/pandoc/filters/wordcount.lua --variable 'geometry:margin=1in' --citeproc
655 words in body
4171 characters in body
4791 characters in body (including spaces)
Error in readLines(con, warn = FALSE) : cannot open the connection
In addition: Warning message:
In readLines(con, warn = FALSE) :
  cannot open file 'mother.tex': No such file or directory

母亲.tex怎么了？为什么没有创建它？

希望有人可以帮忙。已经谢谢。

Answer 1

好的，我有点努力为WordCout：Process参数找到正确的位置。

但是，对于那些试图实现解决方法的人的解决方案可能是以下内容：

从 https://github.com/pandoc/lua-filters/blob/04e2d663d663dcb374d2c79ad1a42a42a30714843cb4843cb440/wordcount/wordcount/wordcount/wordcount/wordcount/wordcount/wordcount.lua--

“ 43-45

-- counts words in a document

words = 0
characters = 0
characters_and_spaces = 0
process_anyway = false

wordcount = {
  Str = function(el)
    -- we don't count a word if it's entirely punctuation:
    if el.text:match("%P") then
        words = words + 1
    end
    characters = characters + utf8.len(el.text)
    characters_and_spaces = characters_and_spaces + utf8.len(el.text)
  end,

  Space = function(el)
    characters_and_spaces = characters_and_spaces + 1
  end,

  Code = function(el)
    _,n = el.text:gsub("%S+","")
    words = words + n
    text_nospace = el.text:gsub("%s", "")
    characters = characters + utf8.len(text_nospace)
    characters_and_spaces = characters_and_spaces + utf8.len(el.text)
  end,

  CodeBlock = function(el)
    _,n = el.text:gsub("%S+","")
    words = words + n
    text_nospace = el.text:gsub("%s", "")
    characters = characters + utf8.len(text_nospace)
    characters_and_spaces = characters_and_spaces + utf8.len(el.text)
  end
}

-- check if the `wordcount` variable is set to `process-anyway`
--function Meta(meta)
--  if meta.wordcount and (meta.wordcount=="process-anyway"
--    or meta.wordcount=="process" or meta.wordcount=="convert") then
      process_anyway = true
--  end
--end

function Pandoc(el)
    -- skip metadata, just count body:
    pandoc.walk_block(pandoc.Div(el.blocks), wordcount)
    print(words .. " words in body")
    print(characters .. " characters in body")
    print(characters_and_spaces .. " characters in body (including spaces)")
    if not process_anyway then
      os.exit(0)
    end
  end

Answer 2

问题在于过滤器停止转换过程，因此未创建输出。

我假设您正在使用WordCount来自 https：// github。 com/pandoc/lua-filters 。该过滤器将中止文档转换，除非 元数据字段wordCount设置为字符串Process或convert。

因此，您可以添加-Metadata = WordCount = Process pandoc_args设置：

    pandoc_args: 
      - --lua-filter=/Users/user/.local/share/pandoc/filters/wordcount.lua
      - --metadata=wordcount=process

或修改过滤器以始终处理文档，无论是否设置了元数据。