mustache_to_handlebars

A python tool to convert mustache templates to handlebars

This assumes that the specific implementations are:

• mustache: (Java) artifactId=jmustache https://github.com/samskivert/jmustache
• handlebars: (Java) artifactId=handlebars https://github.com/jknack/handlebars.java

Features

Handles conversion for if/unless first + last

• {{#-first}} -> {{#if @first}}
• {{#-last}} -> {{#if @last}}
• {{^-first}} -> {{#unless @first}}
• {{^-last}} -> {{#unless @last}}
• {{/-first}} -> {{\if}} OR {{\unless}}
• {{/-last}} -> {{\if}} OR {{\unless}}

Tags that begin with # are ambiguous when going from mustache to handlebars because in mustache, # handles, truthy input, array input, and object context input. So in handlebars, a mustache #someTag can be #if someTag, #each someTag, or #with someTag

• this tool prints out those ambiguous tags so the user can decide which usage it should be
• one can assign those tags to the if/each/with use cases with the command line arguments
  • -handlebars_if_tags
  • -handlebars_each_tags
  • -handlebars_with_tags

Replaces array index tags

• {{myArray.0}} -> {{myArray.[0]}}
• {{{myArray.0}}} -> {{{myArray.[0]}}}
• {{#myArray.0}} -> {{#if myArray.[0]}} if you define myArray[0] as a handlebars_if_tag

Features that have not yet been implemented:

• replacing {{.}} or {{{.}}} references with the enclosing tag variable

Usage

Clone this repo

# make the virtual env
python3 -m venv venv
# activate it
venv bin/activate
# install the tool into it
make install

Invocations:

usage: mustache_to_handlebars [-h] [-out_dir OUT_DIR] [-handlebars_if_tags HANDLEBARS_IF_TAGS] [-handlebars_each_tags HANDLEBARS_EACH_TAGS]
                              [-handlebars_with_tags HANDLEBARS_WITH_TAGS] [-remove_whitespace_before_open] [-remove_whitespace_after_open]
                              [-remove_whitespace_before_close] [-remove_whitespace_after_close] [-only_in_dir] [-delete_in_files]
                              in_dir

convert templates from mustache to handebars

positional arguments:
  in_dir                the folder containing your mustache templates

optional arguments:
  -h, --help            show this help message and exit
  -out_dir OUT_DIR      the folder to write the handlebars templates to. if unset in_dir will be used
  -handlebars_if_tags HANDLEBARS_IF_TAGS
                        a list of tags passed in a space delimited string like 'someTag anotherTag'
  -handlebars_each_tags HANDLEBARS_EACH_TAGS
                        a list of tags passed in a space delimited string like 'someTag anotherTag'
  -handlebars_with_tags HANDLEBARS_WITH_TAGS
                        a list of tags passed in a space delimited string like 'someTag anotherTag'
  -remove_whitespace_before_open
  -remove_whitespace_after_open
  -remove_whitespace_before_close
  -remove_whitespace_after_close
  -only_in_dir          the program recurses through descendant directories by default, to only search in_dir, set this parameter
  -delete_in_files      if passed, the mustache template files will be deleted

testing

Install pytest in your virtual environment and then run make test