move functions to util.ts

lib/util.js

@@ -354,4 +354,50 @@ async function withTmpDir(body) {
     return result;
 }
 exports.withTmpDir = withTmpDir;
+/**
+ * Get the value specified for the `ram` input. If no value was specified, the
+ * total available memory will be used minus 256 MB.
+ *
+ * @returns string
+ */
+function getMemoryFlag() {
+    let memoryToUseMegaBytes;
+    const memoryToUseString = core.getInput("ram");
+    if (memoryToUseString) {
+        memoryToUseMegaBytes = Number(memoryToUseString);
+        if (Number.isNaN(memoryToUseMegaBytes) || memoryToUseMegaBytes <= 0) {
+            throw new Error("Invalid RAM setting \"" + memoryToUseString + "\", specified.");
+        }
+    }
+    else {
+        const totalMemoryBytes = os.totalmem();
+        const totalMemoryMegaBytes = totalMemoryBytes / (1024 * 1024);
+        const systemReservedMemoryMegaBytes = 256;
+        memoryToUseMegaBytes = totalMemoryMegaBytes - systemReservedMemoryMegaBytes;
+    }
+    return "--ram=" + Math.floor(memoryToUseMegaBytes);
+}
+exports.getMemoryFlag = getMemoryFlag;
+/**
+ * Get the value specified for the `threads` input. The value defaults to 1.
+ * The value will be capped to the number of available CPUs.
+ *
+ * @returns string
+ */
+function getThreadsFlag() {
+    let numThreads = 1;
+    const numThreadsString = core.getInput("threads");
+    if (numThreadsString) {
+        numThreads = Number(numThreadsString);
+        if (Number.isNaN(numThreads) || numThreads < 0) {
+            throw new Error(`Invalid threads setting "${numThreadsString}", specified.`);
+        }
+        const maxThreads = os.cpus().length;
+        if (numThreads > maxThreads) {
+            numThreads = maxThreads;
+        }
+    }
+    return `--threads=${numThreads}`;
+}
+exports.getThreadsFlag = getThreadsFlag;
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