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R version 4.0.3 (2020-10-10) -- "Bunny-Wunnies Freak Out"
Copyright (C) 2020 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin17.0 (64-bit)
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.
R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.
Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.
> NAME <- "text"
> source(file.path('_helper', 'init.R'))
>
> # - simple wrap
>
> txt1 <- c(
+ "humpty dumpty sat on a wall and had a big fall",
+ "humpty sat on a wall and dumped a big fall"
+ )
> res1 <- diffobj:::wrap(txt1, 10, TRUE, sgr.supported=TRUE)
>
> identical(
+ gsub(" *$", "", vapply(res1, paste0, character(1L), collapse="")), txt1
+ )
[1] TRUE
> all.equal(lapply(res1, nchar), list(rep(10L, 5L), rep(10L, 5L)))
[1] TRUE
>
> txt2 <- "hello world!"
> identical(
+ unlist(diffobj:::wrap(txt2, nchar(txt2), TRUE, sgr.supported=TRUE)),
+ txt2
+ )
[1] TRUE
> identical(
+ paste0(
+ unlist(diffobj:::wrap(txt2, nchar(txt2) / 2, TRUE, sgr.supported=TRUE)),
+ collapse=""
+ ),
+ txt2
+ )
[1] TRUE
>
> # - wrap with escape sequences
>
> txt3 <- c(
+ paste0(
+ "humpty dumpty ", crayon::style("sat on a wall", "red"),
+ " and had a big fall",
+ crayon::style(
+ crayon::style(
+ "humpty sat on a wall and dumped a big fall",
+ "green"
+ ),
+ "bgRed"
+ ), "woohoo"
+ ),
+ paste0(
+ crayon::style("hello ", "inverse"), "beautiful ",
+ crayon::style("world", "blue")
+ )
+ )
> res3 <- diffobj:::wrap(txt3, 10, TRUE, sgr.supported=TRUE)
>
> identical(
+ crayon::strip_style(
+ gsub(" *$", "", vapply(res3, paste0, character(1L), collapse=""))
+ ),
+ crayon::strip_style(txt3)
+ )
[1] TRUE
> all.equal(
+ lapply(res3, crayon::col_nchar),
+ list(rep(10L, 10L), rep(10L, 3L))
+ )
[1] TRUE
>
> # - strip hz whitespace
>
> options(crayon.enabled=FALSE)
> all.equal(
+ diffobj:::strip_hz_control("a\tb", stops=4L, sgr.supported=TRUE), "a b")
[1] TRUE
> all.equal(
+ diffobj:::strip_hz_control("ab\t", stops=4L, sgr.supported=TRUE), "ab ")
[1] TRUE
> all.equal(
+ diffobj:::strip_hz_control("a\tb\t", stops=4L, sgr.supported=TRUE), "a b ")
[1] TRUE
> all.equal(
+ diffobj:::strip_hz_control("\ta\tb\t", stops=4L, sgr.supported=TRUE),
+ " a b "
+ )
[1] TRUE
> all.equal(
+ diffobj:::strip_hz_control("\ta\tb\t", stops=c(2L, 4L), sgr.supported=TRUE),
+ " a b "
+ )
[1] TRUE
> all.equal(
+ diffobj:::strip_hz_control(
+ c("ab\t", "\ta\tb\t"), sgr.supported=TRUE, stops=4L
+ ),
+ c("ab ", " a b ")
+ )
[1] TRUE
> # recall that nchar("\033") == 1
> all.equal(
+ diffobj:::strip_hz_control(
+ "\033[31ma\t\033[39mhello\tb", stops=10L, sgr.supported=FALSE
+ ),
+ "\033[31ma \033[39mhello b"
+ )
[1] TRUE
> all.equal(
+ diffobj:::strip_hz_control(
+ "\033[31ma\t\033[39mhello\tb", stops=10L, sgr.supported=TRUE
+ ),
+ "\033[31ma\033[39m \033[31m\033[39mhello \033[31m\033[39mb"
+ )
[1] TRUE
> # carriage returns
>
> all.equal(
+ diffobj:::strip_hz_control("hellothere\rHELLO", sgr.supported=TRUE),
+ "HELLOthere"
+ )
[1] TRUE
> all.equal(
+ diffobj:::strip_hz_control(
+ c("hellothere\rHELLO", "000\r12345678\rabcdef\rABC"), sgr.supported=TRUE
+ ),
+ c("HELLOthere", "ABCdef78")
+ )
[1] TRUE
> all.equal(
+ diffobj:::strip_hz_control("hellothere\r", sgr.supported=TRUE),
+ "hellothere"
+ )
[1] TRUE
> all.equal(
+ diffobj:::strip_hz_control(character(), sgr.supported=TRUE), character()
+ )
[1] TRUE
> # newlines
>
> all.equal(
+ diffobj:::strip_hz_control(c("a", "", "\n", "a\nb"), sgr.supported=TRUE),
+ c("a", "", "", "a", "b")
+ )
[1] TRUE
> # with colors
>
> options(crayon.enabled=TRUE)
>
> all.equal(
+ crayon::strip_style(
+ diffobj:::strip_hz_control(
+ "\033[31ma\t\033[39mhello\tb", stops=10L, sgr.supported=TRUE)
+ ),
+ "a hello b"
+ )
[1] TRUE
> test.chr <- paste0(
+ crayon::red(crayon::`%+%`("000", crayon::bgBlue("\r12345678"))),
+ "\rabcdef", crayon::green("\rABC")
+ )
> # visually inspect these
>
> # cat("\n")
> # cat(test.chr, sep="\n")
> res <- diffobj:::strip_hz_control(test.chr, sgr.supported=TRUE)
> # cat(res, sep="\n")
> all.equal(crayon::strip_style(res), "ABCdef78")
[1] TRUE
>
> # Mix tabs and carriage returns, visual inspection assumes terminal tab
> # stops at 8L; note output not exactly the same since it seems tabs don't
> # ovewrite prior screen state whereas spaces do
>
> test.chr.2 <- paste0(
+ crayon::red(crayon::`%+%`("000", crayon::bgBlue("\r123\t456\t78"))),
+ "\rab\tcd f", crayon::green("\rABC")
+ )
> # cat("\n")
> # cat(test.chr.2, sep="\n")
> res.2 <- diffobj:::strip_hz_control(test.chr.2, stops=8L, sgr.supported=TRUE)
> # cat(res.2, sep="\n")
>
> all.equal(crayon::strip_style(res.2), "ABC cd f 78")
[1] TRUE
>
> # multi line
>
> test.chr.3 <- c(test.chr, test.chr.2)
> # cat("\n")
> res.3 <- diffobj:::strip_hz_control(test.chr.3, sgr.supported=TRUE)
> # cat(res.3, sep="\n")
> # cat(test.chr.3, sep="\n")
>
> all.equal(crayon::strip_style(res.3), c("ABCdef78", "ABC cd f 78"))
[1] TRUE
>
>
> proc.time()
user system elapsed
1.047 0.106 1.146
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