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util: refactor getversion.sh

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It is necessary to collect information about more then one git
repositories status for the cr50 board. To facilitate this, separate
the code retrieving build version information into a function,
get_tree_version().

The function returns a two element string, the version information and
the 'dirty' marker in case the tree has any uncommitted changes. The
0x01 character is used to join the elements of the string, which makes
it easier to split the string when processing it.

BRANCH=ToT
BUG=chrome-os-partner:55373
TEST=ran the script before and after changes, observed that generated
      output is identical.

Change-Id: I2c211cbda8c3cab3c8c21b4430e4b3102691e74a
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/362849
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
This commit is contained in:
Vadim Bendebury
2016-07-27 20:22:26 -07:00
committed by chrome-bot
parent eb0660283d
commit 3531d6123b
1 changed files with 59 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

86
util/getversion.sh
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@@ -6,35 +6,67 @@
#
# Generate version information for the EC binary
if ghash=`git rev-parse --short --verify HEAD 2>/dev/null`; then
if gdesc=`git describe --dirty --match='v*' 2>/dev/null`; then
IFS="-" fields=($gdesc)
tag="${fields[0]}"
IFS="." vernum=($tag)
numcommits=$((${vernum[2]}+${fields[1]:-0}))
ver_major="${vernum[0]}"
ver_branch="${vernum[1]}"
else
numcommits=`git rev-list HEAD | wc -l`
ver_major="v0"
ver_branch="0"
fi
# avoid putting the -dirty attribute if only the timestamp
# changed
git status > /dev/null 2>&1
# Use this symbol as a separator to be able to reliably concatenate strings of
# text.
dc=$'\001'
dirty=`sh -c "[ '$(git diff-index --name-only HEAD)' ] && echo '-dirty'"`
vbase="${ver_major}.${ver_branch}.${numcommits}-${ghash}${dirty}"
else
# Fall back to the VCSID provided by the packaging system if available.
if ghash=${VCSID##*-}; then
vbase="1.1.9999-${ghash:0:7}"
else
# then ultimately fails to "no_version"
vbase="no_version"
fi
fi
# This function examines the state of the current directory and attempts to
# extract its version information: the latest tag, if any, how many patches
# are there since the latest tag, the top sha1, and if there are local
# modifications.
#
# Local modifications are reported by concatenating the revision string and
# the string '-dirty' using the $dc symbol as the separator.
#
# If there is no tags defined in this git repository, the base version is
# considered to be 0.0.
#
# If current directory is not a git depository, this function prints out
# "no_version"
get_tree_version() {
local ghash
local numcommits
local tag
local vbase
local ver_branch
local ver_major
if ghash=`git rev-parse --short --verify HEAD 2>/dev/null`; then
if gdesc=`git describe --dirty --match='v*' 2>/dev/null`; then
IFS="-" fields=($gdesc)
tag="${fields[0]}"
IFS="." vernum=($tag)
numcommits=$((${vernum[2]}+${fields[1]:-0}))
ver_major="${vernum[0]}"
ver_branch="${vernum[1]}"
else
numcommits=`git rev-list HEAD | wc -l`
ver_major="v0"
ver_branch="0"
fi
# avoid putting the -dirty attribute if only the timestamp
# changed
git status > /dev/null 2>&1
dirty=`sh -c "[ '$(git diff-index --name-only HEAD)' ] && echo '-dirty'"`
vbase="${ver_major}.${ver_branch}.${numcommits}-${ghash}${dirty}"
else
# Fall back to the VCSID provided by the packaging system if available.
if ghash=${VCSID##*-}; then
vbase="1.1.9999-${ghash:0:7}"
else
# then ultimately fails to "no_version"
vbase="no_version"
fi
fi
echo "${vbase}${dc}${dirty}"
}
IFS="${dc}"
values=( $(get_tree_version) )
vbase="${values[0]}" # Retrieved version information.
dirty="${values[1]}" # Non-zero, if the repository is 'dirty'
ver="${BOARD}_${vbase}"
echo "/* This file is generated by util/getversion.sh */"