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| author | Adrian Schmutzler <freifunk@adrianschmutzler.de> | 2019-09-28 15:12:55 +0200 |
|---|---|---|
| committer | David Bauer <mail@david-bauer.net> | 2019-10-13 19:03:57 +0200 |
| commit | c1388a2deb00b65ee4a06c0a1d4c461f2194ef38 (patch) | |
| tree | cb5d3c0aec1212d942d41b0315674110d37db528 /package | |
| parent | bba6646b5cba591946b3fd0caaad79cb6ec78043 (diff) | |
| download | upstream-c1388a2deb00b65ee4a06c0a1d4c461f2194ef38.tar.gz upstream-c1388a2deb00b65ee4a06c0a1d4c461f2194ef38.tar.bz2 upstream-c1388a2deb00b65ee4a06c0a1d4c461f2194ef38.zip | |
base-files: move xor() from caldata extraction to functions.sh
The xor() function is defined in each of the caldata extraction
scripts for several targets. Move it to functions.sh to reduce
duplicate code.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Diffstat (limited to 'package')
| -rwxr-xr-x | package/base-files/files/lib/functions.sh | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh index 860fc045100..81176431d16 100755 --- a/package/base-files/files/lib/functions.sh +++ b/package/base-files/files/lib/functions.sh @@ -17,6 +17,22 @@ NO_EXPORT=1 LOAD_STATE=1 LIST_SEP=" " +# xor multiple hex values of the same length +xor() { + local val + local ret="0x$1" + local retlen=${#1} + + shift + while [ -n "$1" ]; do + val="0x$1" + ret=$((ret ^ val)) + shift + done + + printf "%0${retlen}x" "$ret" +} + append() { local var="$1" local value="$2" |