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Diffstat (limited to 'scripts/get_layer_info_from_README.sh')
-rwxr-xr-x | scripts/get_layer_info_from_README.sh | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/scripts/get_layer_info_from_README.sh b/scripts/get_layer_info_from_README.sh new file mode 100755 index 0000000..25bc9b2 --- /dev/null +++ b/scripts/get_layer_info_from_README.sh @@ -0,0 +1,90 @@ +#!/bin/sh +# (C) Gunnar Andersson 2015-12-12 +# License: MPLv2 + +# This fetches information about layer dependencies +# as documented in meta-ivi README. +# revision, branch name, or sub layer name can be extracted + +README=README.md +DEBUG=false + +layer=$1 +what=$2 + +[ -z "$layer" -o -z "$what" ] && { echo "Usage: $0 <layername> <branch|revision>" ; exit 1 ; } + +fail() { + echo "*** FAILED ***" + [ -n "$1" ] && echo "Message: " $@ + exit 1 +} + +sanity_check_num_lines() { + what=$1 ; min=$2 ; max=$3 + + numlines="$(wc -l)" # < Reads from stdin + + if [ $numlines -lt $min ] ; then + fail "Sanity check: It looks like section $what has $numlines lines, and that is not enough. Please check what is wrong." + fi + + if [ $numlines -gt $max ] ; then + fail "Sanity check: It looks like section $what has $numlines lines, and that is more than expected. Please check what is wrong." + fi +} + +[ -f ./$README ] || fail "Cannot find README.md. (Current directory is $PWD)" + +# Extract relevant section of the README +dependency_section=$( <$README \ + sed -n '/Layer Dependencies/,/known to work/p' |\ + egrep 'URI:|branch:|layer:|revision:') + +# Debug printouts... +$DEBUG && echo "OK, found the following layer info in dependency section:" +$DEBUG && cat <<EOT +$dependency_section +EOT + +cat <<EOT | sanity_check_num_lines "Layer Dependencies Section" 6 20 +$dependency_section +EOT + +# Get only this layer's information +layer_info=$( +cat <<EOT | sed -n "/URI:.*$layer/,/URI:/p" | sed 's/> //' | head -4 +$dependency_section +EOT +) + +# Get value for item "what" +value=$( +cat <<EOT | grep "$what" | awk '{print $2}' +$layer_info +EOT +) + +# Check again - now only one line expected... +cat <<EOT | sanity_check_num_lines "$what information for $layer" 1 1 +$value +EOT + +# OK, this should be it: +echo $value + + +# Example README format: +# +#Layer Dependencies +#------------------ +# +#URI: git://git.yoctoproject.org/poky +#> branch: fido +#> revision: eb4a134a60e3ac26a48379675ad6346a44010339 +# +#URI: git://git.openembedded.org/meta-openembedded +#> layer: meta-oe +#> branch: fido +#> revision: 5b0305d9efa4b5692cd942586fb7aa92dba42d59 + |