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# kate: default-dictionary en_US
## This file is part of the 'stringi' package for R.
## Copyright (c) 2013-2025, Marek Gagolewski <https://www.gagolewski.com/>
## All rights reserved.
##
## Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are met:
##
## 1. Redistributions of source code must retain the above copyright notice,
## this list of conditions and the following disclaimer.
##
## 2. Redistributions in binary form must reproduce the above copyright notice,
## this list of conditions and the following disclaimer in the documentation
## and/or other materials provided with the distribution.
##
## 3. Neither the name of the copyright holder nor the names of its
## contributors may be used to endorse or promote products derived from
## this software without specific prior written permission.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## 'AS IS' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
## BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
## FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
## PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
## OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
## WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
## OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
## EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# internal functions used whilst installing stringi
icudt_fname <- c(
little74 = "icudt74l.dat",
big74 = "icudt74b.dat"
)
# This function is not exported; it is called by install.libs.r(.in)
stri_install_icudt <- function(outpath, inpath, icu_bundle_version)
{
# remember about importFrom tools md5sum -> stringi-package.R
xzpath <- stri_download_icudt(inpath, icu_bundle_version)
if (identical(xzpath, FALSE) || !file.exists(xzpath)) {
return(invisible(FALSE))
}
basepath <- substr(xzpath, 1, nchar(xzpath)-3) # ~~".xz"~~
message("decompressing ", xzpath, " to: ", outpath)
fin <- xzfile(xzpath, "rb")
fout <- file(basepath, "wb")
repeat {
chunk <- readBin(fin, raw(), 8192L)
if (length(chunk) <= 0) break
writeBin(chunk, fout)
}
close(fout)
close(fin)
md5ex <- scan(sprintf("%s.md5sum", basepath), what=character(), n=1, quiet=TRUE)
md5ob <- tools::md5sum(basepath)
if (is.na(md5ob) || md5ob != md5ex) {
message(sprintf("md5sum mismatch for %s (%s vs %s)",
basepath, as.character(md5ob), as.character(md5ex)
))
file.remove(basepath)
return(invisible(FALSE))
}
file.copy(basepath, file.path(outpath, basename(basepath)), overwrite=TRUE)
file.remove(basepath)
message(sprintf("%s installed successfully", basepath))
invisible(TRUE)
}
# This function is not exported;
# it is called by configure(.ac) and stri_install_icudt above
stri_download_icudt <- function(inpath, icu_bundle_version)
{
fname <- icudt_fname[paste0(.Platform$endian, icu_bundle_version)]
path <- file.path(inpath, fname)
commit_id <- "bbe75eca8f9ef4dc72dc5c6e36c8f8306a324b7e"
mirrors <- sprintf(
"%s://raw.githubusercontent.com/gagolews/stringi/%s/src/icu%d/data/",
c("https", "http"),
commit_id,
icu_bundle_version
)
xzpath <- sprintf("%s.xz", path)
if (file.exists(xzpath)) {
message(sprintf("%s exists", xzpath))
return(xzpath)
}
download_from_mirror <- function(href, fname, xzpath) {
tryCatch({
suppressWarnings(file.remove(xzpath))
# download icudt
if (
download.file(
paste(href, fname, sep = ""), xzpath, mode = "wb"
) != 0
) {
return("download error")
}
if (!file.exists(xzpath)) {
return("download error")
}
TRUE
}, error = function(e) as.character(e))
}
message(sprintf("downloading the ICU data library (%s)...", xzpath))
if (!dir.exists(inpath)) suppressWarnings(dir.create(inpath))
allok <- FALSE
for (m in mirrors) {
status <- download_from_mirror(m, sprintf("%s.xz", fname), xzpath)
if (identical(status, TRUE)) {
allok <- TRUE
break
}
else message(status)
}
if (!allok || !file.exists(xzpath)) {
suppressWarnings(file.remove(xzpath))
message(sprintf("Error: %s could not be downloaded", xzpath))
return(invisible(FALSE))
}
message(sprintf("%s downloaded successfully", xzpath))
return(xzpath)
}
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