wildling 2.0.2

Pattern based string generator library and CLI

wildling

Python library and CLI for pattern-based string generation. Zero third-party dependencies (stdlib only). Requires Python 3.9+.

Docs: Website · Sandbox · Syntax · Source

Registry: PyPI

Example

http://${'dev,stage,prod'}\-${'api,web'}#{0-2}.example.${'com,net,org'}/@.html

(The \- is a literal hyphen; bare - would mean “one letter or digit”. @ is one lowercase letter.)

That builds URL-shaped candidates: scheme http://, then environment × service × optional digits × TLD, then a one-letter path page. Three environments, two services, zero–two digits ('', 0–9, 00–99), three TLDs, and a–z → 51948 strings — the kind of list you generate for fuzzing links or probing staging hosts, not type out.

A few of them:

• http://dev-api.example.com/a.html / http://stage-web.example.com/z.html
• http://dev-api0.example.net/a.html / http://prod-web9.example.org/m.html
• http://dev-api00.example.com/a.html / http://prod-web99.example.org/z.html

Named dictionaries (%{'hosts'}) work the same way when the word lists live in files.

Try it in the sandbox, or see pattern syntax for length ranges, dictionaries, and escapes.

Install

From this repository:

cd python
./build.sh
# or without Docker:
cp ../docs/help.txt wildling/help.txt

The CLI is ./bin/wildling.

Registry: pip install wildling

Git:

pip install "git+https://github.com/dotmonk/wildling.git@v2.0.0#subdirectory=python"

Library

from wildling import create_wildling

wildling = create_wildling(
    patterns=["abrakadabra", "Year 19##"],
    dictionaries={"colors": ["red", "blue"]},
)

wildling.count()  # 101
wildling.get(0)   # "abrakadabra"

value = wildling.next()
while value is not False:
    print(value)
    value = wildling.next()

wildling.reset()

API

Method	Description
next()	Next combination, or False when exhausted
get(index)	Combination at index, or False if out of range
count()	Total combinations across all patterns
index()	Current position (after next calls)
reset()	Reset iteration to the start
generators()	Per-pattern generators

CLI

./bin/wildling "Year 19##"
./bin/wildling --dictionary planets:../dictionaries/planets.txt "%{'planets'}"
./bin/wildling --template ./config.json

Help text and --check output follow docs/cli.md / docs/help.txt.

Build

./build.sh   # Docker: copy help.txt + byte-compile

Project tests live in ../tests/ and are run with ../test.sh.