initial commit

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+
+/test/integration-tests/*/actual.*

bin/lima

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+#!/usr/bin/env node
+const { exit } = require("process")
+let lima = require("../dist/lima")
+
+lima.cli(process.argv.slice(2))
+	.catch(error => {
+		process.stderr.write(error.message)
+		exit(22)
+	})

package.json

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+{
+  "name": "lima",
+  "version": "1.0.0-alpha.0",
+  "description": "",
+  "main": "index.js",
+  "bin": {
+    "lima": "bin/lima"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "build": "tsc",
+    "watch": "tsc -w"
+  },
+  "author": "chee <chee@snoot.club>",
+  "license": "GPL-3.0+",
+  "devDependencies": {
+    "@tsconfig/node14": "^1.0.0",
+    "@tsconfig/recommended": "^1.0.1",
+    "@types/node": "^14.14.20",
+    "tap": "^14.11.0",
+    "typescript": "^4.1.3"
+  },
+  "dependencies": {
+    "make-dir": "^2.1.0",
+    "mdast-util-from-markdown": "^0.8.4",
+    "micromark": "^2.11.2"
+  }
+}

readme.md

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+# lima
+
+lima is the minimal implementation of **li**terate **ma**rkdown.
+
+## tangle
+
+```shell
+$ lima tangle file.md
+```
+
+the syntax is inspired by org-mode. noweb is currently unsupported, though will be added as a parser extension.
+
+```markdown
+# welcome to my file
+
+here is some code:
+
+	```c++ filename="main.cc", name="sum"
+	auto sum (std::vector<int> numbers) {
+		int result = 0;
+		for (auto i : numbers) {
+			result += i;
+		}
+		return result;
+	 }
+	 ```
+
+```
+
+you see the option is passed in the info string after the file type.
+
+### valid options
+
+| option | type | info |
+| -- | -- | -- |
+| filename | string | required for the block to be tangled, but optional |
+| chmod | octal number or `ls -l`-like string | the mode the file should have |
+| chown | string or number | the user name or id the file should have |
+| chgrp | string or number | the group name or id the file should have |
+| shebang | string | the shebang to put at the top of the file. if `chmod` is unset, this will set the executable bit |
+| sudo | bool | if the file should be written as root |
+| if | string | an environment variable that must be present for the file to be written
+| unless | string | an environment variable that must not be present for the file to be written |
+| name | string | a name for this codeblock |
+
+
+## weave
+
+lima markdown files are valid commonmark, any markdown renderer that support fenced code blocks should be able to be used as weavers.
+
+there is room for a future `lima weave` sub-command allowing more exciting things to happen.
+
+## todo
+
+- add noweb support
+- add the ability to execute codeblocks during weave
+- add library-of-babel-like functions

src/lib/meta-parser.ts

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+enum MetaParserState {
+	begin,
+	property,
+	value,
+	end
+}
+
+export default class MetaParser {
+	state = MetaParserState.begin
+	result: {[s: string]: any} = {}
+	source = ""
+	property = ""
+	constructor(source: string) {
+		this.source = source
+	}
+	parse() {
+		while (this.source.length) {
+			this.next()
+		}
+		return this.result
+	}
+	next() {
+		switch (this.state) {
+			case MetaParserState.begin: {
+				this.source = this.source.replace(/^\s+/, "")
+				let f = this.source[0]
+				if (f == "=" || f == '"' || f == ",") {
+					// TODO store problem and move alone
+					throw new Error(`invalid char at 0: ${f}`)
+				} else {
+					this.state = MetaParserState.property
+				}
+				break;
+			}
+			case MetaParserState.property: {
+				let match = this.source.match(/^[^=]+/)
+				if (!match) {
+					throw new Error("i don't know")
+				}
+				this.property = match[0]
+				// remove property and equals sign
+				this.source = this.source.slice(this.property.length + 1)
+				this.state = MetaParserState.value
+				break
+			}
+			case MetaParserState.value: {
+				if (this.source[0] == '"') {
+					let string = this.source.match(/^"((?:\\"|[^"])*)/)
+					if (!string) {
+						throw new Error("couldn't find closing quote")
+					}
+					let value = string[1]
+					this.result[this.property] = value
+					this.source = this.source.slice(2 + value.length)
+				} else if (this.source.match(/^false[,\s]/)) {
+					this.result[this.property] = false
+					this.source = this.source.slice(5)
+				} else if (this.source.match(/^true[,\s]/)) {
+					this.result[this.property] = true
+					this.source = this.source.slice(4)
+				} else {
+					let numbers = this.source.match(/^(\d+)(?:\s|,|$)/)
+					if (numbers) {
+						let value = numbers[1]
+						this.result[this.property] = Number(value)
+						this.source = this.source.slice(value.length)
+					} else {
+						throw new Error(`bad value for ${this.property}`)
+					}
+				}
+				let commaetc = this.source.match(/^,\s*/)
+				if (commaetc) {
+					this.state = MetaParserState.property
+					this.source = this.source.slice(commaetc[0].length)
+				} else if (this.source.match(/\s*$/)) {
+					this.state = MetaParserState.end
+					this.source = ""
+				}
+			}
+		}
+	}
+}