Proof of concept portable/container-friendly command-line tool to wrap Golang's text/template capabilities.
- Jim Minter (jminter at redhat.com)
go get github.com/jim-minter/gotemplate
$GOPATH/bin/gotemplate(alternatively a pre-compiled binary for Linux x86_64 is checked in - caveat emptor)
Golang's text/template capabilities are powerful and are fully documented at https://golang.org/pkg/text/template/.
Usage: gotemplate [-j JSONFILE | -y YAMLFILE] [-missingkey default|invalid|zero|error] TEMPLATE...
-j JSONFILE
read data from JSONFILE
-missingkey missingkey
missingkey option, see https://golang.org/pkg/text/template/#Template.Option (default "default")
-y YAMLFILE
read data from YAMLFILE
# Populate a freeform output file based on environment variables
$GOPATH/bin/gotemplate $GOPATH/src/github.com/jim-minter/gotemplate/examples/example1.tmpl
# Same, but fail on any required but missing environment variables
$GOPATH/bin/gotemplate -missingkey error $GOPATH/src/github.com/jim-minter/gotemplate/examples/example1.tmpl
echo $?
# Populate an XML output file based on JSON input
$GOPATH/bin/gotemplate -j $GOPATH/src/github.com/jim-minter/gotemplate/examples/example2.json $GOPATH/src/github.com/jim-minter/gotemplate/examples/example2.tmpl
# Populate an XML output file based on YAML input
$GOPATH/bin/gotemplate -y $GOPATH/src/github.com/jim-minter/gotemplate/examples/example2.yaml $GOPATH/src/github.com/jim-minter/gotemplate/examples/example2.tmpl
# Call out to a Golang API function from a template
$GOPATH/bin/gotemplate $GOPATH/src/github.com/jim-minter/gotemplate/examples/example3.tmplIn addition to the default functions available using text/template, the following are also available:
Making additional functions available is quite straightforward: e-mail or send a pull request if you require others.