Cross-Platform ‘zip’ Compression
Usage
Creating ZIP files
zip() creates a new ZIP archive. (It overwrites the output file if it exists.) Simply supply all directories and files that you want to include in the archive.
It makes sense to change to the top-level directory of the files before archiving them, so that the files are stored using a relative path name.
zip("sources.zip", c("R", "src"))
file.info("sources.zip")
#> size isdir mode mtime ctime
#> sources.zip 580179 FALSE 644 2023-04-17 13:49:31 2023-04-17 13:49:31
#> atime uid gid uname grname
#> sources.zip 2023-04-17 13:49:31 501 20 gaborcsardi staffDirectories are added recursively by default.
zip_append() is similar to zip(), but it appends files to an existing ZIP archive.
Listing ZIP files
zip_list() lists files in a ZIP archive. It returns a data frame:
zip_list("sources.zip")
#> filename compressed_size
#> 1 R/ 0
#> 2 R/assertions.R 151
#> 3 R/inflate.R 627
#> 4 R/process.R 1793
#> 5 R/utils.R 1202
#> 6 R/zip.R 3274
#> 7 src/ 0
#> 8 src/init.c 367
#> 9 src/init.o 1648
#> 10 src/install.libs.R 272
#> 11 src/Makevars 199
#> 12 src/Makevars.win 273
#> 13 src/miniz.c 55268
#> 14 src/miniz.h 18115
#> 15 src/miniz.o 120248
#> 16 src/rzip.c 2853
#> 17 src/rzip.o 10431
#> 18 src/tools/ 0
#> 19 src/tools/cmdunzip 62958
#> 20 src/tools/cmdunzip.c 590
#> 21 src/tools/cmdunzip.dSYM/ 0
#> 22 src/tools/cmdunzip.dSYM/Contents/ 0
#> 23 src/tools/cmdunzip.dSYM/Contents/Info.plist 304
#> 24 src/tools/cmdunzip.dSYM/Contents/Resources/ 0
#> 25 src/tools/cmdunzip.dSYM/Contents/Resources/DWARF/ 0
#> 26 src/tools/cmdunzip.dSYM/Contents/Resources/DWARF/cmdunzip 70680
#> 27 src/tools/cmdzip 63367
#> 28 src/tools/cmdzip.c 1066
#> 29 src/tools/cmdzip.dSYM/ 0
#> 30 src/tools/cmdzip.dSYM/Contents/ 0
#> 31 src/tools/cmdzip.dSYM/Contents/Info.plist 303
#> 32 src/tools/cmdzip.dSYM/Contents/Resources/ 0
#> 33 src/tools/cmdzip.dSYM/Contents/Resources/DWARF/ 0
#> 34 src/tools/cmdzip.dSYM/Contents/Resources/DWARF/cmdzip 71098
#> 35 src/unixutils.c 724
#> 36 src/unixutils.o 4329
#> 37 src/winutils.c 1949
#> 38 src/zip.c 2830
#> 39 src/zip.h 808
#> 40 src/zip.o 10541
#> 41 src/zip.so 66645
#> uncompressed_size timestamp permissions crc32 offset
#> 1 0 2023-04-17 10:58:10 755 00000000 0
#> 2 398 2023-04-17 10:20:40 644 7f73a9e4 32
#> 3 2174 2023-04-17 10:20:40 644 3b0fdb9e 243
#> 4 6585 2023-04-17 10:20:40 644 99447436 927
#> 5 3915 2023-04-17 10:58:10 644 e653bff7 2777
#> 6 10369 2023-04-17 10:51:34 644 4d620f14 4034
#> 7 0 2023-04-17 10:20:46 755 00000000 7361
#> 8 962 2023-04-17 10:20:40 644 e1c62c7d 7395
#> 9 3744 2023-04-17 10:20:46 644 6da275de 7818
#> 10 587 2022-03-04 14:05:04 644 4f80df1a 9522
#> 11 525 2022-12-19 13:17:12 644 c8789e48 9858
#> 12 700 2022-03-04 14:05:04 644 373232f9 10115
#> 13 314933 2023-04-17 10:20:40 644 450881b2 10450
#> 14 66871 2023-04-17 10:20:40 644 6c5a6c1e 65775
#> 15 333800 2023-04-17 10:20:46 644 887d9996 83947
#> 16 10857 2023-04-17 10:20:40 644 a2c358b5 204252
#> 17 23448 2023-04-17 10:20:46 644 ea86cde3 207161
#> 18 0 2023-04-17 10:20:46 755 00000000 217648
#> 19 228469 2023-04-17 10:20:46 755 57376bd5 217688
#> 20 1343 2022-03-04 14:05:04 644 1a6e34f1 280710
#> 21 0 2023-04-17 09:50:00 755 00000000 281366
#> 22 0 2023-04-17 09:50:00 755 00000000 281420
#> 23 637 2023-04-17 10:20:46 644 294928f0 281483
#> 24 0 2023-04-17 09:50:00 755 00000000 281876
#> 25 0 2023-04-17 09:50:00 755 00000000 281949
#> 26 177363 2023-04-17 10:20:46 644 9d6e0672 282028
#> 27 228627 2023-04-17 10:20:46 755 0aa7342d 352811
#> 28 2909 2022-03-04 14:05:04 644 bfb4d8f3 416240
#> 29 0 2023-04-17 09:50:00 755 00000000 417370
#> 30 0 2023-04-17 09:50:00 755 00000000 417422
#> 31 635 2023-04-17 10:20:46 644 c3375fb9 417483
#> 32 0 2023-04-17 09:50:00 755 00000000 417873
#> 33 0 2023-04-17 09:50:00 755 00000000 417944
#> 34 178267 2023-04-17 10:20:46 644 d905adc8 418021
#> 35 1944 2022-03-04 14:05:04 644 d38da4b6 489218
#> 36 9592 2023-04-17 10:20:46 644 f55ccd93 490003
#> 37 6880 2023-04-17 10:20:40 644 4f65da62 494393
#> 38 11643 2023-04-17 10:20:40 644 119a0ee7 496402
#> 39 2349 2023-04-17 08:32:08 644 92f80ead 499287
#> 40 25288 2023-04-17 10:20:46 644 b69779f4 500150
#> 41 247235 2023-04-17 10:20:46 755 2090ba35 510746Uncompressing ZIP files
unzip() uncompresses a ZIP archive:
Compressing and uncompressing in background processes
You can use the zip_process() and unzip_process() functions to create background zip / unzip processes. These processes were implemented on top of the processx::process class, so they are pollable.