Landon Curt Noll
6b950a2e3c
In preparation for the **Great Fork Merge**: We change references for the repo from `https://github.com/ioccc-src/temp-test-ioccc` to `https://github.com/ioccc-src/winner`. We change references for the web site from `https://ioccc-src.github.io/temp-test-ioccc` to `https://github.com/ioccc-src/winner`. NOTE: There will be a **LOT OF LINKS BROKEN**, because of the changes to the REPO URL and the WEBSITE URL, until the **Great Fork Merge** updates the+[official IOCCC website](https://www.ioccc.org).
400 lines
12 KiB
Bash
Executable File
400 lines
12 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# untar-year.sh - untar files belonging to an IOCCC year
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#
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# Copyright (c) 2024 by Landon Curt Noll. All Rights Reserved.
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#
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# Permission to use, copy, modify, and distribute this software and
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# its documentation for any purpose and without fee is hereby granted,
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# provided that the above copyright, this permission notice and text
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# this comment, and the disclaimer below appear in all of the following:
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#
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# supporting documentation
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# source copies
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# source works derived from this source
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# binaries derived from this source or from derived source
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#
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# LANDON CURT NOLL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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# INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
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# EVENT SHALL LANDON CURT NOLL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
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# USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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# PERFORMANCE OF THIS SOFTWARE.
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#
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# chongo (Landon Curt Noll, http://www.isthe.com/chongo/index.html) /\oo/\
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#
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# Share and enjoy! :-)
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# firewall - run only with a bash that is version 5.1.8 or later
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#
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# The "/usr/bin/env bash" command must result in using a bash that
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# is version 5.1.8 or later.
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#
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# We could relax this version and insist on version 4.2 or later. Versions
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# of bash between 4.2 and 5.1.7 might work. However, to be safe, we will require
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# bash version 5.1.8 or later.
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#
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# WHY 5.1.8 and not 4.2? This safely is done because macOS Homebrew bash we
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# often use is "version 5.2.26(1)-release" or later, and the RHEL Linux bash we
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# use often use is "version 5.1.8(1)-release" or later. These versions are what
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# we initially tested. We recommend you either upgrade bash or install a newer
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# version of bash and adjust your $PATH so that "/usr/bin/env bash" finds a bash
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# that is version 5.1.8 or later.
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#
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# NOTE: The macOS shipped, as of 2024 March 15, a version of bash is something like
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# bash "version 3.2.57(1)-release". That macOS shipped version of bash
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# will NOT work. For users of macOS we recommend you install Homebrew,
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# (see https://brew.sh), and then run "brew install bash" which will
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# typically install it into /opt/homebrew/bin/bash, and then arrange your $PATH
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# so that "/usr/bin/env bash" finds "/opt/homebrew/bin" (or whatever the
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# Homebrew bash is).
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#
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# NOTE: And while MacPorts might work, we noticed a number of subtle differences
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# with some of their ported tools to suggest you might be better off
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# with installing Homebrew (see https://brew.sh). No disrespect is intended
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# to the MacPorts team as they do a commendable job. Nevertheless we ran
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# into enough differences with MacPorts environments to suggest you
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# might find a better experience with this tool under Homebrew instead.
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#
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if [[ -z ${BASH_VERSINFO[0]} ||
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${BASH_VERSINFO[0]} -lt 5 ||
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${BASH_VERSINFO[0]} -eq 5 && ${BASH_VERSINFO[1]} -lt 1 ||
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${BASH_VERSINFO[0]} -eq 5 && ${BASH_VERSINFO[1]} -eq 1 && ${BASH_VERSINFO[2]} -lt 8 ]]; then
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echo "$0: ERROR: bash version needs to be >= 5.1.8: $BASH_VERSION" 1>&2
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echo "$0: Warning: bash version >= 4.2 might work but 5.1.8 was the minimum we tested" 1>&2
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echo "$0: Notice: For macOS users: install Homebrew (see https://brew.sh), then run" \
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""brew install bash" and then modify your \$PATH so that \"#!/usr/bin/env bash\"" \
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"finds the Homebrew installed (usually /opt/homebrew/bin/bash) version of bash" 1>&2
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exit 4
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fi
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# setup bash file matching
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#
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# We must declare arrays with -ag or -Ag, and we need loops to "export" modified variables.
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# This requires a bash with a version 4.2 or later. See the larger comment above about bash versions.
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#
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shopt -s nullglob # enable expanded to nothing rather than remaining unexpanded
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shopt -u failglob # disable error message if no matches are found
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shopt -u dotglob # disable matching files starting with .
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shopt -u nocaseglob # disable strict case matching
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shopt -u extglob # enable extended globbing patterns
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shopt -s globstar # enable ** to match all files and zero or more directories and subdirectories
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# set variables referenced in the usage message
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#
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export VERSION="1.0.4 2024-08-05"
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NAME=$(basename "$0")
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export NAME
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export V_FLAG=0
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GIT_TOOL=$(type -P git)
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export GIT_TOOL
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if [[ -z "$GIT_TOOL" ]]; then
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echo "$0: FATAL: git tool is not installed or not in \$PATH" 1>&2
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exit 5
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fi
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"$GIT_TOOL" rev-parse --is-inside-work-tree >/dev/null 2>&1
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status="$?"
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if [[ $status -eq 0 ]]; then
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TOPDIR=$("$GIT_TOOL" rev-parse --show-toplevel)
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fi
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export TOPDIR
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export REPO_TOP_URL="https://github.com/ioccc-src/winner"
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# GitHub puts individual files under the "blob/master" sub-directory.
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export REPO_URL="$REPO_TOP_URL/blob/master"
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export CAP_W_FLAG_FOUND=
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GTAR_TOOL=$(type -P gtar)
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export GTAR_TOOL
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if [[ -z "$GIT_TOOL" ]]; then
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echo "$0: FATAL: gtar (gnu tar) tool is not installed or not in \$PATH" 1>&2
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exit 8
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fi
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# set usage message
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#
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export USAGE="usage: $0 [-h] [-v level] [-V] [-d topdir] [-D docroot/] [-n] [-N]
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[-w site_url] [-W]
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YYYY
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-h print help message and exit
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-v level set verbosity level (def level: 0)
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-V print version string and exit
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-d topdir set topdir (def: $TOPDIR)
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-D docroot/ This option is ignored
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-n go thru the actions, but do not update any files (def: do the action)
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-N do not process file, just parse arguments and ignore the file (def: process the file)
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-w site_url This option is ignored
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-W Warn if a file in the manifest is missing: (def: error if a file is missing)
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YYYY IOCCC year
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Exit codes:
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0 all OK
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1 some internal tool exited non-zero
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2 -h and help string printed or -V and version string printed
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3 command line error
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4 bash version is too old
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5 some internal tool is not found or not an executable file
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6 problems found with or in the topdir or topdir/YYYY directory
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7 problems found with or in the entry topdir/YYYY/dir directory
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8 gnu tar is missing or execution failed or error in forming compressed tarball
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>= 10 internal error
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$NAME version: $VERSION"
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# setup
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#
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export NOOP=
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export DO_NOT_PROCESS=
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# parse command line
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#
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while getopts :hv:Vd:D:nNU:w:W flag; do
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case "$flag" in
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h) echo "$USAGE" 1>&2
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exit 2
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;;
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v) V_FLAG="$OPTARG"
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;;
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V) echo "$VERSION"
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exit 2
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;;
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d) TOPDIR="$OPTARG"
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;;
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D) ;;
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n) NOOP="-n"
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;;
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N) DO_NOT_PROCESS="-N"
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;;
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U) ;;
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w) ;;
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W) CAP_W_FLAG_FOUND="true"
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;;
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\?) echo "$0: ERROR: invalid option: -$OPTARG" 1>&2
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echo 1>&2
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echo "$USAGE" 1>&2
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exit 3
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;;
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:) echo "$0: ERROR: option -$OPTARG requires an argument" 1>&2
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echo 1>&2
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echo "$USAGE" 1>&2
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exit 3
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;;
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*) echo "$0: ERROR: unexpected value from getopts: $flag" 1>&2
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echo 1>&2
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echo "$USAGE" 1>&2
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exit 3
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;;
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esac
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done
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#
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# parse the command line arguments
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#
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if [[ $V_FLAG -ge 3 ]]; then
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echo "$0: debug[3]: debug level: $V_FLAG" 1>&2
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fi
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#
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shift $(( OPTIND - 1 ));
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#
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if [[ $V_FLAG -ge 5 ]]; then
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echo "$0: debug[5]: file argument count: $#" 1>&2
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fi
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if [[ $# -ne 1 ]]; then
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echo "$0: ERROR: expected 1 arg, found: $#" 1>&2
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exit 3
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fi
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#
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export YYYY="$1"
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# verify that we have a topdir directory
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#
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REPO_NAME=$(basename "$REPO_TOP_URL")
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export REPO_NAME
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if [[ -z $TOPDIR ]]; then
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echo "$0: ERROR: cannot find top of git repo directory" 1>&2
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echo "$0: Notice: if needed: $GIT_TOOL clone $REPO_TOP_URL; cd $REPO_NAME" 1>&2
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exit 6
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fi
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if [[ ! -e $TOPDIR ]]; then
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echo "$0: ERROR: TOPDIR does not exist: $TOPDIR" 1>&2
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echo "$0: Notice: if needed: $GIT_TOOL clone $REPO_TOP_URL; cd $REPO_NAME" 1>&2
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exit 6
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fi
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if [[ ! -d $TOPDIR ]]; then
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echo "$0: ERROR: TOPDIR is not a directory: $TOPDIR" 1>&2
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echo "$0: Notice: if needed: $GIT_TOOL clone $REPO_TOP_URL; cd $REPO_NAME" 1>&2
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exit 6
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fi
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# cd to topdir
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#
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if [[ ! -e $TOPDIR ]]; then
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echo "$0: ERROR: cannot cd to non-existent path: $TOPDIR" 1>&2
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exit 6
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fi
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if [[ ! -d $TOPDIR ]]; then
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echo "$0: ERROR: cannot cd to a non-directory: $TOPDIR" 1>&2
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exit 6
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fi
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export CD_FAILED
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if [[ $V_FLAG -ge 5 ]]; then
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echo "$0: debug[5]: about to: cd $TOPDIR" 1>&2
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fi
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cd "$TOPDIR" || CD_FAILED="true"
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if [[ -n $CD_FAILED ]]; then
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echo "$0: ERROR: cd $TOPDIR failed" 1>&2
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exit 6
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fi
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if [[ $V_FLAG -ge 3 ]]; then
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echo "$0: debug[3]: now in directory: $(/bin/pwd)" 1>&2
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fi
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# verify that YYYY is an IOCCC year directory
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#
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if [[ ! -e $YYYY ]]; then
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echo "$0: ERROR: arg does not exist: $YYYY" 1>&2
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exit 6
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fi
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if [[ ! -d $YYYY ]]; then
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echo "$0: ERROR: arg is not a directory: $YYYY" 1>&2
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exit 6
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fi
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if [[ ! -r $YYYY ]]; then
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echo "$0: ERROR: arg is not a readable directory: $YYYY" 1>&2
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exit 6
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fi
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# verify that YYYY has a non-empty readable .year file
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#
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export DOT_YEAR="$YYYY/.year"
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if [[ ! -e $DOT_YEAR ]]; then
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echo "$0: ERROR: YYYY/.year does not exist: $DOT_YEAR" 1>&2
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exit 6
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fi
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if [[ ! -f $DOT_YEAR ]]; then
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echo "$0: ERROR: YYYY/.year is not a regular file: $DOT_YEAR" 1>&2
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exit 6
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fi
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if [[ ! -r $DOT_YEAR ]]; then
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echo "$0: ERROR: YYYY/.year is not an readable file: $DOT_YEAR" 1>&2
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exit 6
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fi
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if [[ ! -s $DOT_YEAR ]]; then
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echo "$0: ERROR: YYYY/.year is not a non-empty readable file: $DOT_YEAR" 1>&2
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exit 6
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fi
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# determine the name of our tarball
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#
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# TARBALL - the same of the compressed tarball to verify and if needed re-build
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# REBUILD_TARBALL - if non-empty, we need to re-build TARBALL and update tar timestamps
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#
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export TARBALL="$YYYY/$YYYY.tar.bz2"
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# test - if needed - if the tarball is a non-empty writable file
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#
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if [[ ! -e $TARBALL ]]; then
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echo "$0: ERROR: tarball does not exist: $TARBALL" 1>&2
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exit 1
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fi
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if [[ ! -f $TARBALL ]]; then
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echo "$0: ERROR: tarball is not a file: $TARBALL" 1>&2
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exit 1
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fi
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if [[ ! -w $TARBALL ]]; then
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echo "$0: ERROR: tarball is not a writable file: $TARBALL" 1>&2
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exit 1
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fi
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if [[ ! -s $TARBALL ]]; then
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echo "$0: ERROR: tarball is not a non-empty writable file: $TARBALL" 1>&2
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exit 1
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fi
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# parameter debugging
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#
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if [[ $V_FLAG -ge 3 ]]; then
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echo "$0: debug[3]: VERSION=$VERSION" 1>&2
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echo "$0: debug[3]: NAME=$NAME" 1>&2
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echo "$0: debug[3]: V_FLAG=$V_FLAG" 1>&2
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echo "$0: debug[3]: GIT_TOOL=$GIT_TOOL" 1>&2
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echo "$0: debug[3]: TOPDIR=$TOPDIR" 1>&2
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echo "$0: debug[3]: REPO_TOP_URL=$REPO_TOP_URL" 1>&2
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echo "$0: debug[3]: REPO_URL=$REPO_URL" 1>&2
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echo "$0: debug[3]: CAP_W_FLAG_FOUND=$CAP_W_FLAG_FOUND" 1>&2
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echo "$0: debug[3]: GTAR_TOOL=$GTAR_TOOL" 1>&2
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echo "$0: debug[3]: NOOP=$NOOP" 1>&2
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echo "$0: debug[3]: DO_NOT_PROCESS=$DO_NOT_PROCESS" 1>&2
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echo "$0: debug[3]: YYYY=$YYYY" 1>&2
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echo "$0: debug[3]: REPO_NAME=$REPO_NAME" 1>&2
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echo "$0: debug[3]: CD_FAILED=$CD_FAILED" 1>&2
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echo "$0: debug[3]: DOT_YEAR=$DOT_YEAR" 1>&2
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echo "$0: debug[3]: TARBALL=$TARBALL" 1>&2
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fi
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# If -N, time to exit
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#
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if [[ -n $DO_NOT_PROCESS ]]; then
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if [[ $V_FLAG -ge 1 ]]; then
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echo "$0: debug[1]: arguments parsed, -N given, exit 0" 1>&2
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fi
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exit 0
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fi
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# untar entry compressed tarball
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#
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if [[ -z $NOOP ]]; then
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# case: form the tarball verbosely if -v 5 or more
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#
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if [[ $V_FLAG -ge 1 ]]; then
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echo "$0: debug[1]: about to execute:" \
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"$GTAR_TOOL --totals -jxvf $TARBALL" 1>&2
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"$GTAR_TOOL" --totals -jxvf "$TARBALL"
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status="$?"
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if [[ $status -ne 0 ]]; then
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echo "$0: ERROR:" \
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"$GTAR_TOOL --totals -jxvf $TARBALL failed, error: $status" 1>&2
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exit 8
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fi
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# case: form the tarball silently
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#
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else
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"$GTAR_TOOL" -jxf "$TARBALL"
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status="$?"
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if [[ $status -ne 0 ]]; then
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echo "$0: ERROR:" \
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"$GTAR_TOOL -jxf $TARBALL failed, error: $status" 1>&2
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exit 8
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fi
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fi
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# case: -n
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#
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elif [[ $V_FLAG -ge 5 ]]; then
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echo "$0: debug[5]: because of -n, did not execute:" \
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"$GTAR_TOOL --totals -jxvf $TARBALL" 1>&2
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fi
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# All Done!!! All Done!!! -- Jessica Noll, Age 2
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#
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exit 0
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