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Handles wrapping text around LaTeX tags

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This commit is contained in:
Jiahao Li
2018-10-02 01:45:44 -04:00
parent 2e9e57fa13
commit 92407c1cbc
2 changed files with 88 additions and 3 deletions
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23
packages/autoflow/lib/autoflow.coffee
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@@ -51,14 +51,30 @@ module.exports =
tabLengthInSpaces = ''
for block in paragraphBlocks
blockLines = block.split('\n')
# For LaTeX tags surrounding the text, we simply ignore them, and
# reproduce them verbatim in the wrapped text.
beginningLinesToIgnore = []
endingLinesToIgnore = []
latexTagRegex = /^\s*\\\w+(\[.*\])?\{\w+\}(\[.*\])?\s*$/g # e.g. \begin{verbatim}
latexTagStartRegex = /^\s*\\\w+\s*\{\s*$/g # e.g. \item{
latexTagEndRegex = /^\s*\}\s*$/g # e.g. }
while blockLines[0].match(latexTagRegex) or
blockLines[0].match(latexTagStartRegex)
beginningLinesToIgnore.push(blockLines[0])
blockLines.shift()
while blockLines[blockLines.length - 1].match(latexTagRegex) or
blockLines[blockLines.length - 1].match(latexTagEndRegex)
endingLinesToIgnore.unshift(blockLines[blockLines.length - 1])
blockLines.pop()
# TODO: this could be more language specific. Use the actual comment char.
# Remember that `-` has to be the last character in the character class.
linePrefix = block.match(/^\s*(\/\/|\/\*|;;|#'|\|\|\||--|[#%*>-])?\s*/g)[0]
linePrefix = blockLines[0].match(/^\s*(\/\/|\/\*|;;|#'|\|\|\||--|[#%*>-])?\s*/g)[0]
linePrefixTabExpanded = linePrefix
if tabLengthInSpaces
linePrefixTabExpanded = linePrefix.replace(/\t/g, tabLengthInSpaces)
blockLines = block.split('\n')
if linePrefix
escapedLinePrefix = _.escapeRegExp(linePrefix)
@@ -93,7 +109,8 @@ module.exports =
currentLineLength += segment.length
lines.push(linePrefix + currentLine.join(''))
paragraphs.push(lines.join('\n').replace(/\s+\n/g, '\n'))
wrappedLines = beginningLinesToIgnore.concat(lines.concat(endingLinesToIgnore))
paragraphs.push(wrappedLines.join('\n').replace(/\s+\n/g, '\n'))
leadingVerticalSpace + paragraphs.join('\n\n') + trailingVerticalSpace

68
packages/autoflow/spec/autoflow-spec.coffee
View File

@@ -560,3 +560,71 @@ describe "Autoflow package", ->
'''
expect(autoflow.reflow(test, wrapColumn: 80)).toEqual res
it 'properly reflows text around LaTeX tags', ->
text =
'''
\\begin{verbatim}
Lorem ipsum dolor sit amet, nisl odio amet, et tempor netus neque at at blandit, vel vestibulum libero dolor, semper lobortis ligula praesent. Eget condimentum integer, porta sagittis nam, fusce vitae a vitae augue. Nec semper quis sed ut, est porttitor praesent. Nisl velit quam dolore velit quam, elementum neque pellentesque pulvinar et vestibulum.
\\end{verbatim}
'''
res =
'''
\\begin{verbatim}
Lorem ipsum dolor sit amet, nisl odio amet, et tempor netus neque at at
blandit, vel vestibulum libero dolor, semper lobortis ligula praesent. Eget
condimentum integer, porta sagittis nam, fusce vitae a vitae augue. Nec
semper quis sed ut, est porttitor praesent. Nisl velit quam dolore velit
quam, elementum neque pellentesque pulvinar et vestibulum.
\\end{verbatim}
'''
expect(autoflow.reflow(text, wrapColumn: 80)).toEqual res
it 'properly reflows text inside LaTeX tags', ->
text =
'''
\\item{
Lorem ipsum dolor sit amet, nisl odio amet, et tempor netus neque at at blandit, vel vestibulum libero dolor, semper lobortis ligula praesent. Eget condimentum integer, porta sagittis nam, fusce vitae a vitae augue. Nec semper quis sed ut, est porttitor praesent. Nisl velit quam dolore velit quam, elementum neque pellentesque pulvinar et vestibulum.
}
'''
res =
'''
\\item{
Lorem ipsum dolor sit amet, nisl odio amet, et tempor netus neque at at
blandit, vel vestibulum libero dolor, semper lobortis ligula praesent. Eget
condimentum integer, porta sagittis nam, fusce vitae a vitae augue. Nec
semper quis sed ut, est porttitor praesent. Nisl velit quam dolore velit
quam, elementum neque pellentesque pulvinar et vestibulum.
}
'''
expect(autoflow.reflow(text, wrapColumn: 80)).toEqual res
it 'properly reflows text inside nested LaTeX tags', ->
text =
'''
\\begin{enumerate}[label=(\\alph*)]
\\item{
Lorem ipsum dolor sit amet, nisl odio amet, et tempor netus neque at at blandit, vel vestibulum libero dolor, semper lobortis ligula praesent. Eget condimentum integer, porta sagittis nam, fusce vitae a vitae augue. Nec semper quis sed ut, est porttitor praesent. Nisl velit quam dolore velit quam, elementum neque pellentesque pulvinar et vestibulum.
}
\\end{enumerate}
'''
res =
'''
\\begin{enumerate}[label=(\\alph*)]
\\item{
Lorem ipsum dolor sit amet, nisl odio amet, et tempor netus neque at at
blandit, vel vestibulum libero dolor, semper lobortis ligula praesent.
Eget condimentum integer, porta sagittis nam, fusce vitae a vitae augue.
Nec semper quis sed ut, est porttitor praesent. Nisl velit quam dolore
velit quam, elementum neque pellentesque pulvinar et vestibulum.
}
\\end{enumerate}
'''
expect(autoflow.reflow(text, wrapColumn: 80)).toEqual res