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Also extracted function for commands what expect version as arg
This commit is contained in:
Kunal Dabir 2017-10-14 12:17:01 +05:30
parent a6381b6093
commit 2a75f7e763
1 changed files with 32 additions and 16 deletions
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@ -3,14 +3,19 @@
## Important so that version is not extracted for failed commands (not found)
set -o pipefail
## constant - symbols for success failure
PASS='✔'
FAIL='✘'
## These variables are used to keep track of passed and failed commands
OK=0
KO=0
## Regex to extract simple version - extracts numeric sem-ver style versions
REGEX_SIMPLE_VERSION="([[:digit:]]+\.?){2,3}"
## try to extract version by executing $1 with $2 arg
__dynamic_detect(){
cmd=$1
params=$2
@ -33,11 +38,17 @@ __dynamic_detect-v(){
__dynamic_detect $1 "-v"
}
# commands that use `version` argument
__dynamic_detect-arg_version(){
__dynamic_detect $1 "version"
}
## the main function
__detect(){
name=$1
# setup aliases
# setup aliases maps commonly used name to exact command name
case ${name} in
golang) command="go" ;;
jre) command="java" ;;
@ -49,7 +60,7 @@ __detect(){
case ${command} in
# those that need --version flag
# commands that need --version flag
git|hg|svn|bzr) __dynamic_detect--version ${command} ;;
node|npm) __dynamic_detect--version ${command} ;;
ruby|gem|rake|bundle) __dynamic_detect--version ${command} ;;
@ -62,56 +73,61 @@ __detect(){
jq|ag|brew) __dynamic_detect--version ${command} ;;
gcc|make) __dynamic_detect--version ${command} ;;
# those that need -version flag
# commands that need -version flag
ant|java|javac) __dynamic_detect-version ${command} ;;
# commands that need version arg
hugo) __dynamic_detect-arg_version ${command} ;;
## Example of commands that need custom processing
## go needs version arg
go)
version=$(go version 2>&1| egrep -o "$REGEX_SIMPLE_VERSION" | head -1)
status=$?
;;
hugo)
version=$(hugo version 2>&1| egrep -o "$REGEX_SIMPLE_VERSION" | head -1)
status=$?
;;
## ab uses -V flag
ab)
version=$(ab -V 2>&1 | egrep -o "$REGEX_SIMPLE_VERSION" | head -1)
status=$?
;;
## gor returns version but does not return normal status code, hence needs custom processing
gor)
version=$(gor version 2>&1 | egrep -o "$REGEX_SIMPLE_VERSION" | head -1)
if [ $? -eq 1 ]; then status=0; else status=1; fi
;;
*)
## Can allow dynamic checking here
## Can allow dynamic checking here, i.e. checking commands that are not listed above
if [[ "${HAS_ALLOW_UNSAFE}" == "y" ]]; then
__dynamic_detect--version ${command}
## fallback checking based on status!=127
## fallback checking based on status!=127 (127 means command not found)
## TODO can check other type of supported version-checks if status was not 127
else
status="-1"
## -1 is special way to tell command is not supported/whitelisted by `has`
status="-1"
fi
;;
esac
## When unsafe processing is not allowed, the -1 signifies
if [ "$status" -eq "-1" ]; then
if [ "$status" -eq "-1" ]; then ## When unsafe processing is not allowed, the -1 signifies
echo ${FAIL} ${command} "not understood"
KO=$(($KO+1))
elif [ ${status} -eq 127 ]; then
elif [ ${status} -eq 127 ]; then ## command not installed
echo ${FAIL} ${command}
KO=$(($KO+1))
elif [ ${status} -eq 0 ]; then
elif [ ${status} -eq 0 ]; then ## successfully executed
echo ${PASS} ${command} ${version}
OK=$(($OK+1))
else
else ## as long as its not 127, command is there, but we might not have been able to extract version
echo ${PASS} ${command}
OK=$(($OK+1))