Templater

Templater is a cli tool that helps you to quickly and easily create files from templates, using go template.

How to use

1. Inline variables

# File using helm templating
cat <<'EOF'>file
---
{{- $name := "John" }}
class:
{{- range $i := until 11 }}
  {{$i}}: {{$name}}
{{- end }}
EOF

templater -i file

# This will be the output

File: out/file
---
class:
  0: John
  1: John
  2: John
  3: John
  4: John
  5: John
  6: John
  7: John
  8: John
  9: John
  10: John

2. Passing variables from external yaml, using helm style templating.

# Value file
cat <<'EOF'>values.yaml
school: Govt. Public School
EOF
# File using helm templating
cat <<'EOF'>file
---
{{- $name := "John" }}
class:
  school: {{ .Values.school }}
{{- range $i := until 11 }}
  {{$i}}: {{$name}}
{{- end }}
EOF

templater -i file -f values.yaml -o out/

# This will be the output

File: out/file
---
class:
  school: Govt. Public School
  0: John
  1: John
  2: John
  3: John
  4: John
  5: John
  6: John
  7: John
  8: John
  9: John
  10: John

3. Using stdin

# Value file
cat <<'EOF'>values.yaml
name: Rajesh
EOF

echo "hi: {{.Values.name}}" | templater -f values.yaml -i -

output:

hi: Rajesh

Installation

1. HomeBrew

brew install rjshrjndrn/tap/templater

2. Binary

Download the latest binary from Release Page.

3. Using go get

go get github.com/rjshrjndrn/templater