1 files changed, 68 insertions, 0 deletions
diff --git a/node_modules/@npmcli/promise-spawn/lib/escape.js b/node_modules/@npmcli/promise-spawn/lib/escape.js
new file mode 100644
index 000000000..9aca8bde7
--- /dev/null
+++ b/node_modules/@npmcli/promise-spawn/lib/escape.js
@@ -0,0 +1,68 @@
+'use strict'
+
+// eslint-disable-next-line max-len
+// this code adapted from: https://blogs.msdn.microsoft.com/twistylittlepassagesallalike/2011/04/23/everyone-quotes-command-line-arguments-the-wrong-way/
+const cmd = (input, doubleEscape) => {
+  if (!input.length) {
+    return '""'
+  }
+
+  let result
+  if (!/[ \t\n\v"]/.test(input)) {
+    result = input
+  } else {
+    result = '"'
+    for (let i = 0; i <= input.length; ++i) {
+      let slashCount = 0
+      while (input[i] === '\\') {
+        ++i
+        ++slashCount
+      }
+
+      if (i === input.length) {
+        result += '\\'.repeat(slashCount * 2)
+        break
+      }
+
+      if (input[i] === '"') {
+        result += '\\'.repeat(slashCount * 2 + 1)
+        result += input[i]
+      } else {
+        result += '\\'.repeat(slashCount)
+        result += input[i]
+      }
+    }
+    result += '"'
+  }
+
+  // and finally, prefix shell meta chars with a ^
+  result = result.replace(/[ !%^&()<>|"]/g, '^$&')
+  if (doubleEscape) {
+    result = result.replace(/[ !%^&()<>|"]/g, '^$&')
+  }
+
+  return result
+}
+
+const sh = (input) => {
+  if (!input.length) {
+    return `''`
+  }
+
+  if (!/[\t\n\r "#$&'()*;<>?\\`|~]/.test(input)) {
+    return input
+  }
+
+  // replace single quotes with '\'' and wrap the whole result in a fresh set of quotes
+  const result = `'${input.replace(/'/g, `'\\''`)}'`
+    // if the input string already had single quotes around it, clean those up
+    .replace(/^(?:'')+(?!$)/, '')
+    .replace(/\\'''/g, `\\'`)
+
+  return result
+}
+
+module.exports = {
+  cmd,
+  sh,
+}