# adapted from: https://github.com/rdpeng/rprogdatascience/blob/leanpub/manuscript/fixmath.R
cargs <- commandArgs(TRUE)
infile <- cargs[1]
fixmath = function(doc0) {
doc <- sub("^\\\\\\[$", "{\\$\\$}", doc0, perl = TRUE)
doc <- sub("^\\\\\\]$", "{\\/\\$\\$}", doc, perl = TRUE)
doc <- gsub("\\$\\$(\\S+)\\$\\$", "\\$\\1\\$", doc, perl = TRUE)
doc <- gsub("^\\$(.+)\\$$", "{\\$\\$}\\1{\\/\\$\\$}", doc, perl = TRUE)
# Adds pagebreaks for leanpub
#doc = c("", "{pagebreak}","", doc)
doc
}
fix_chapter_enum = function(doc0) {
gsub("{-}", "", doc0, fixed = TRUE)
}
add_pagebreak = function(doc) {
gsub("<!--{pagebreak}-->", "{pagebreak}", doc, fixed = TRUE)
}
process_file = function(infile) {
doc0 = readLines(infile)
doc = fixmath(doc0)
doc = fix_chapter_enum(doc)
doc = add_pagebreak(doc)
writeLines(doc, infile)
}
process_file(infile)
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