diff options
Diffstat (limited to '')
| -rwxr-xr-x | src/dpkg-realpath.sh | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/src/dpkg-realpath.sh b/src/dpkg-realpath.sh deleted file mode 100755 index 84438b4..0000000 --- a/src/dpkg-realpath.sh +++ /dev/null @@ -1,179 +0,0 @@ -#!/bin/sh -# -# Copyright © 2020 Helmut Grohne <helmut@subdivi.de> -# Copyright © 2020 Guillem Jover <guillem@debian.org> -# -# 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 2 of the License, or -# (at your option) any later version. -# -# This program 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 <https://www.gnu.org/licenses/>. - -set -e - -PROGNAME=$(basename "$0") -version="unknown" -EOL="\n" - -PKGDATADIR_DEFAULT=src -PKGDATADIR="${DPKG_DATADIR:-$PKGDATADIR_DEFAULT}" - -# shellcheck source=src/sh/dpkg-error.sh -. "$PKGDATADIR/sh/dpkg-error.sh" - -show_version() -{ - cat <<END -Debian $PROGNAME version $version. - -This is free software; see the GNU General Public License version 2 or -later for copying conditions. There is NO warranty. -END -} - -show_usage() -{ - cat <<END -Usage: $PROGNAME [<option>...] <pathname> - -Options: - -z, --zero end output line with NUL, not newline. - --instdir <directory> set the root directory. - --root <directory> set the root directory. - --version show the version. - -?, --help show this help message. -END -} - -canonicalize() { - local src="$1" - local root="$DPKG_ROOT" - local loop=0 - local result="$root" - local dst - - # Check whether the path is relative and make it absolute otherwise. - if [ "$src" = "${src#/}" ]; then - src="$(pwd)/$src" - src="${src#"$root"}" - fi - - # Remove prefixed slashes. - while [ "$src" != "${src#/}" ]; do - src=${src#/} - done - while [ -n "$src" ]; do - # Get the first directory component. - prefix=${src%%/*} - # Remove the first directory component from src. - src=${src#"$prefix"} - # Remove prefixed slashes. - while [ "$src" != "${src#/}" ]; do - src=${src#/} - done - # Resolve the first directory component. - if [ "$prefix" = . ]; then - # Ignore, stay at the same directory. - : - elif [ "$prefix" = .. ]; then - # Go up one directory. - result=${result%/*} - if [ -n "$root" ] && [ "${result#"$root"}" = "$result" ]; then - result="$root" - fi - elif [ -h "$result/$prefix" ]; then - loop=$((loop + 1)) - if [ "$loop" -gt 25 ]; then - error "too many levels of symbolic links" - fi - # Resolve the symlink within $result. - dst=$(readlink "$result/$prefix") - case "$dst" in - /*) - # Absolute pathname, reset result back to $root. - result=$root - src="$dst${src:+/$src}" - # Remove prefixed slashes. - while [ "$src" != "${src#/}" ]; do - src=${src#/} - done - ;; - *) - # Relative pathname. - src="$dst${src:+/$src}" - ;; - esac - else - # Otherwise append the prefix. - result="$result/$prefix" - fi - done - # We are done, print the resolved pathname, w/o $root. - result="${result#"$root"}" - printf "%s$EOL" "${result:-/}" -} - -setup_colors - -DPKG_ROOT="${DPKG_ROOT:-}" -export DPKG_ROOT - -while [ $# -ne 0 ]; do - case "$1" in - -z|--zero) - EOL="\0" - ;; - --instdir|--root) - shift - DPKG_ROOT=$1 - ;; - --instdir=*) - DPKG_ROOT="${1#--instdir=}" - ;; - --root=*) - DPKG_ROOT="${1#--root=}" - ;; - --version) - show_version - exit 0 - ;; - --help|-\?) - show_usage - exit 0 - ;; - --) - shift - pathname="$1" - ;; - -*) - badusage "unknown option: $1" - ;; - *) - pathname="$1" - ;; - esac - shift -done - -# Normalize root directory. -DPKG_ROOT="${DPKG_ROOT:+$(realpath "$DPKG_ROOT")}" -# Remove default root dir. -if [ "$DPKG_ROOT" = "/" ]; then - DPKG_ROOT="" -fi - -[ -n "$pathname" ] || badusage "missing pathname" -if [ "${pathname#"$DPKG_ROOT"}" != "$pathname" ]; then - error "link '$pathname' includes root prefix '$DPKG_ROOT'" -fi - -canonicalize "$pathname" - -exit 0 |