R Under development (unstable) (2023-12-12 r85669 ucrt) -- "Unsuffered Consequences"
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> ## rmatio, a R interface to the C library matio, MAT File I/O Library.
> ## Copyright (C) 2013-2023  Stefan Widgren
> ##
> ## This program is free software: you can redistribute it and/or modify
> ## it under the terms of the GNU General Public License as published by
> ## the Free Software Foundation, either version 3 of the License, or
> ## (at your option) any later version.
> ##
> ## rmatio is distributed in the hope that it will be useful,
> ## but WITHOUT ANY WARRANTY; without even the implied warranty of
> ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> ## GNU General Public License for more details.
> ##
> ## You should have received a copy of the GNU General Public License
> ## along with this program.  If not, see <http://www.gnu.org/licenses/>.
> 
> library(rmatio)
> 
> ## For debugging
> sessionInfo()
R Under development (unstable) (2023-12-12 r85669 ucrt)
Platform: x86_64-w64-mingw32/x64
Running under: Windows Server 2022 x64 (build 20348)

Matrix products: default


locale:
[1] LC_COLLATE=C                 LC_CTYPE=German_Germany.utf8
[3] LC_MONETARY=C                LC_NUMERIC=C                
[5] LC_TIME=C                   

time zone: Europe/Berlin
tzcode source: internal

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] rmatio_0.19.0

loaded via a namespace (and not attached):
[1] compiler_4.4.0 Matrix_1.6-4   grid_4.4.0     lattice_0.22-5
> 
> ##
> ## Check write and read of character strings in MAT5 format:
> ## 1) without compression
> ## 2) with compression
> ##
> 
> ##
> ## Note:
> ## If the character vector contains elements of differents lengths i.e.
> ## a2_in <- list(c("a", "bb"), c("c", "dd"))                            # nolint
> ## then the expected result is not identical, since each element
> ## is saved in a cell and the expected result of a2_in is therefore
> ## a2_exp <- list("a", "bb")                                            # nolint
> ##
> 
> ##
> ## string: case-1
> ##
> a1_exp <- c("abcdefghijklmnopqrstuvwxyz",
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
+           "1234567890!@#$%^&*()-_=+`~", #
+           "[{]}\\|;:'\",<.>/?          ")
> filename <- tempfile(fileext = ".mat")
> write.mat(list(a = a1_exp), filename = filename, compression = FALSE,
+           version = "MAT5")
> a1_obs <- read.mat(filename)[["a"]]
> unlink(filename)
> str(a1_obs)
 chr [1:4] "abcdefghijklmnopqrstuvwxyz" "ABCDEFGHIJKLMNOPQRSTUVWXYZ" ...
> stopifnot(identical(a1_obs, a1_exp))
> 
> ## Run the same test with compression
> filename <- tempfile(fileext = ".mat")
> write.mat(list(a = a1_exp), filename = filename, compression = TRUE,
+           version = "MAT5")
> a1_zlib_obs <- read.mat(filename)[["a"]]
> unlink(filename)
> str(a1_zlib_obs)
 chr [1:4] "abcdefghijklmnopqrstuvwxyz" "ABCDEFGHIJKLMNOPQRSTUVWXYZ" ...
> stopifnot(identical(a1_zlib_obs, a1_exp))
> 
> ##
> ## string: case-2
> ##
> a2_in <- c("a", "bb")
> a2_exp <- list("a", "bb")
> filename <- tempfile(fileext = ".mat")
> write.mat(list(a = a2_in), filename = filename, compression = FALSE,
+           version = "MAT5")
> a2_obs <- read.mat(filename)[["a"]]
> unlink(filename)
> str(a2_obs)
List of 2
 $ : chr "a"
 $ : chr "bb"
> stopifnot(identical(a2_obs, a2_exp))
> 
> ## Run the same test with compression
> filename <- tempfile(fileext = ".mat")
> write.mat(list(a = a2_in), filename = filename, compression = TRUE,
+           version = "MAT5")
> a2_zlib_obs <- read.mat(filename)[["a"]]
> unlink(filename)
> str(a2_zlib_obs)
List of 2
 $ : chr "a"
 $ : chr "bb"
> stopifnot(identical(a2_zlib_obs, a2_exp))
> 
> ##
> ## string: case-3
> ##
> a3_in <- list(y = c("a", "bb"))
> a3_exp <- list(y = list("a", "bb"))
> filename <- tempfile(fileext = ".mat")
> write.mat(list(a = a3_in), filename = filename, compression = FALSE,
+           version = "MAT5")
> a3_obs <- read.mat(filename)[["a"]]
> unlink(filename)
> str(a3_obs)
List of 1
 $ y:List of 2
  ..$ : chr "a"
  ..$ : chr "bb"
> stopifnot(identical(a3_obs, a3_exp))
> 
> ## Run the same test with compression
> filename <- tempfile(fileext = ".mat")
> write.mat(list(a = a3_in), filename = filename, compression = TRUE,
+           version = "MAT5")
> a3_zlib_obs <- read.mat(filename)[["a"]]
> unlink(filename)
> str(a3_zlib_obs)
List of 1
 $ y:List of 2
  ..$ : chr "a"
  ..$ : chr "bb"
> stopifnot(identical(a3_zlib_obs, a3_exp))
> 
> ##
> ## string: case-4
> ##
> a4_in <- list(c("a", "bb"))
> a4_exp <- list(list("a", "bb"))
> filename <- tempfile(fileext = ".mat")
> write.mat(list(a = a4_in), filename = filename, compression = FALSE,
+           version = "MAT5")
> a4_obs <- read.mat(filename)[["a"]]
> unlink(filename)
> str(a4_obs)
List of 1
 $ :List of 2
  ..$ : chr "a"
  ..$ : chr "bb"
> stopifnot(identical(a4_obs, a4_exp))
> 
> ## Run the same test with compression
> filename <- tempfile(fileext = ".mat")
> write.mat(list(a = a4_in), filename = filename, compression = TRUE,
+           version = "MAT5")
> a4_zlib_obs <- read.mat(filename)[["a"]]
> unlink(filename)
> str(a4_zlib_obs)
List of 1
 $ :List of 2
  ..$ : chr "a"
  ..$ : chr "bb"
> stopifnot(identical(a4_zlib_obs, a4_exp))
> 
> proc.time()
   user  system elapsed 
   0.82    0.10    0.93