feat: Restrict available licenses

Use one most common license for:
- preserving authorship only,
- preserving access to the source code,
- releasing work to the public doman.

README.md

@@ -3,11 +3,28 @@
 [![Quality check status](https://github.com/macie/shinit/actions/workflows/check.yml/badge.svg)](https://github.com/macie/shinit/actions/workflows/check.yml)
 [![License](https://img.shields.io/github/license/macie/smallstache.sh)](https://tldrlegal.com/license/mit-license)
 
-**shinit** interactively creates empty Bourne shell script in new directory with:
-
-- `README.md` and `LICENSE` files
+**shinit** interactively initializes empty project for a Bourne shell script.
+
+`shinit` asks user for:
+- project name (by default: `sh-<hash>`),
+- author name (by default: user from git config or current OS user),
+- license ID from corporate-safe selection:
+    - [MIT](https://choosealicense.com/licenses/mit/) (default) - to maximize
+        chance of mass adoption by preserving authorship information only,
+    - [GPL-3.0-only](https://choosealicense.com/licenses/gpl-3.0/) - to secure
+        access to the source code at the cost of adoption across for-profit
+        organizations,
+    - [MIT-0](https://choosealicense.com/licenses/mit-0/) - to release the
+        source code into the public domain, even in jurisdictions without
+        the public domain.
+
+Based on answers, `shinit` creates a new directory with:
+
+- initialized Git repository and `.gitignore` allow list
+- shell script with executable permissions
 - `Makefile` with configured development targets
-- configured Git repository.
+- `LICENSE` file
+- `README.md` with basic info.
 
 ## Usage
 

shinit

@@ -4,7 +4,7 @@
 # SPDX-License-Identifier: MIT
 # <https://github.com/macie/shinit>
 
-SHINIT_VERSION="2024.02-prerelease"
+SHINIT_VERSION="2024.02"
 
 # DEFAULTS
 SHINIT_GIT_BIN=$(git -v)
@@ -44,11 +44,13 @@ shinit_prompt() {
 		SHINIT_AUTHOR="${SHINIT_AUTHOR_DEFAULT}"
 	fi
 
-	printf ' - license [%s]: ' "${SHINIT_LICENSE_DEFAULT}"
-	read -r SHINIT_LICENSE
-	if [ -z "${SHINIT_LICENSE}" ]; then
-		SHINIT_LICENSE="${SHINIT_LICENSE_DEFAULT}"
-	fi
+	while ! echo "${SHINIT_LICENSE}" | grep -q -E '^MIT|GPL-3.0-only|MIT-0'; do
+		printf ' - license (MIT, GPL-3.0-only, MIT-0) [%s]: ' "${SHINIT_LICENSE_DEFAULT}"
+		read -r SHINIT_LICENSE
+		if [ -z "${SHINIT_LICENSE}" ]; then
+			SHINIT_LICENSE="${SHINIT_LICENSE_DEFAULT}"
+		fi
+	done
 }
 
 # Generate project files.
@@ -222,7 +224,7 @@ EOF
 # Prepare documentation files.
 shinit_markdown() {
 	# shellcheck disable=SC2018,SC2019
-	LICENSE_SRC='https://raw.githubusercontent.com/github/choosealicense.com/gh-pages/_licenses/'$(echo "${SHINIT_LICENSE}" | tr 'A-Z' 'a-z')'.txt'
+	LICENSE_SRC='https://raw.githubusercontent.com/github/choosealicense.com/gh-pages/_licenses/'$(echo "${SHINIT_LICENSE}" | tr 'A-Z' 'a-z' | sed 's/-only//g')'.txt'
 
 	printf ' - LICENSE (from %s)\n' "${LICENSE_SRC}"
 	curl -fL "${LICENSE_SRC}" | sed -e '/---/,/---/d' -e '/./,$!d' -e "s/\[year\]/$(date +%Y)/g" -e "s/\[fullname\]/$SHINIT_AUTHOR/g" >LICENSE

tests/test_init.sh

@@ -23,6 +23,20 @@ test_default() {
     test "$(ls -a "${TEST_PROJ_DIR}" | tr '\n' ' ')" = ". .. .git .gitignore LICENSE Makefile README.md ${TEST_PROJ_SCRIPT} " 
 }
 
+test_name() {
+    echo 'cool_script' | ./shinit "${TEST_ROOT_DIR}" 2>/dev/null >&2
+    test $? -eq 0
+
+    test -f "${TEST_ROOT_DIR}/cool_script/cool_script"
+}
+
+test_license_invalid() {
+    printf 'some_proj\ninvalid\nMIT-0\n' | ./shinit "${TEST_ROOT_DIR}" 2>/dev/null >&2
+    test $? -eq 0
+
+    grep -q 'MIT No Attribution' "${TEST_ROOT_DIR}/some_proj/LICENSE"
+}
+
 test_repo_path_local() {
     echo '/valid.url/is/here/local_test.git' | ./shinit "${TEST_ROOT_DIR}" 2>/dev/null >&2
     test $? -eq 0

tests/test_regression.sh

@@ -4,7 +4,7 @@ beforeAll() {
     TEST_ROOT_DIR=$(mktemp -d -t 'shinit_testXXXXXX')
     MOCK_DIR=$(mktemp -d -t 'shinit_mockXXXXXX')
 
-    USED_CMDS='cat cd chmod curl date hexdump id ls mkdir printf sed tr'
+    USED_CMDS='cat cd chmod curl date grep hexdump id ls mkdir printf sed tr'
     for MOCKED_CMD in $USED_CMDS; do
         echo '#!/bin/sh' >"${MOCK_DIR}/${MOCKED_CMD}"
         if type "$MOCKED_CMD" | grep -q 'builtin'; then