stcg

Scripted Template Content Generator. Designed to produce text content from a template containing script and text. Used mostly for generating code based on a json data model.

Contributing & bugs

Please fork the repository, make the changes in your fork and include tests. Once you're done making changes, send in a pull request.

Bug reports

Please include a test which shows why the code fails.

Features

• Creates and runs a script from a custom template format (text mixed with javascript)
• Runs in a secure (vm2) environment
• Supports addition of extra global data/functions
• Configurable template code/output markers
• Built-in jsonpath evaluator for interaction with the data model

Usage

Simple library usage

Simple C structure data generation

var Stcg = require('stcg').Stcg;

var data = {
    "data" : [
        {"name": 1, "address": 2, "custom": 3},
        {"name": 4, "address": 5, "custom": 6}
    ]
};

var template = 
'struct my_struct data[[>stcg.dpath(\"$.data.length\")<]] = \n' +
'{\n' +
'[!stcg.dpath(\"$.data.*\").forEach((elem, ind) => {!]\n' +
'   {\n' +
'        .elem = [>`${elem["name"]}`<],\n' +
'        .address = [>`${elem["name"]}`<],\n' +
'        .elem = [>`${elem["custom"]}`<]\n' +
'   },\n' +
'[!})!]\n' +
'};\n'

var stcg = new Stcg(template);
console.log(stcg.run(data));

Will produce the following code

struct my_struct data[2] = 
{
   {
        .elem = 1,
        .address = 1,
        .elem = 3
   },
   {
        .elem = 4,
        .address = 4,
        .elem = 6
   },
};

Simple CLI usage

Run the generator on given input file. Before you can use stcg in command line, install it globally with npm install stcg -g.

usage: stcg [-h] [-v] [--code_begin CODE_BEGIN] [--code_end CODE_END]
            [--output_begin OUTPUT_BEGIN] [--output_end OUTPUT_END]
            [-s SCHEMA] [-d DATA] [-o OUTPUT]
            template

Scripted Template Content Generator

Positional arguments:
  template                      Template file

Optional arguments:
  -h, --help                    Show this help message and exit.
  -v, --version                 Show program's version number and exit.
  --code_begin CODE_BEGIN       Code begin block marker
  --code_end CODE_END           Code end block marker
  --output_begin OUTPUT_BEGIN   Output begin block marker
  --output_end OUTPUT_END       Output end block marker
  -s SCHEMA, --schema SCHEMA    Data model json schema file
  -d DATA, --data DATA          Data model json file
  -o OUTPUT, --output OUTPUT    Output file

Documentation

Options

• codeBegin - Code begin marker, defaults to: [!.
• codeEnd - Code end marker, defaults to: !].
• outputBegin - Output begin marker, defaults to: [>.
• outputEnd - Output end marker, defaults to: <].
• trimAfterCode - Ignore all whitespaces and the first newline after a code run.
• debugLen - Determines the number of characters a Error will include in in it's info.

Built-in functions/data

• stcg.out(string) - Prints.
• stcg.outl(string) - Prints with newline.
• stcg.dpath(path) - Evaluates path on the data model and returns the data. See (jsonpath).
• stcg.data - The data object received by Stcg.run(data).

Deployment

1. Update the package.json version number
2. Commit the changes
3. Run npm publish