auto import from //depot/cupcake/@135843
diff --git a/libs/utils/misc.cpp b/libs/utils/misc.cpp
new file mode 100644
index 0000000..dc89d15
--- /dev/null
+++ b/libs/utils/misc.cpp
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2005 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//
+// Miscellaneous utility functions.
+//
+#include <utils/misc.h>
+
+#include <sys/stat.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+#include <stdio.h>
+
+using namespace android;
+
+namespace android {
+
+/*
+ * Like strdup(), but uses C++ "new" operator instead of malloc.
+ */
+char* strdupNew(const char* str)
+{
+ char* newStr;
+ int len;
+
+ if (str == NULL)
+ return NULL;
+
+ len = strlen(str);
+ newStr = new char[len+1];
+ memcpy(newStr, str, len+1);
+
+ return newStr;
+}
+
+/*
+ * Concatenate an argument vector.
+ */
+char* concatArgv(int argc, const char* const argv[])
+{
+ char* newStr = NULL;
+ int len, totalLen, posn, idx;
+
+ /*
+ * First, figure out the total length.
+ */
+ totalLen = idx = 0;
+ while (1) {
+ if (idx == argc || argv[idx] == NULL)
+ break;
+ if (idx)
+ totalLen++; // leave a space between args
+ totalLen += strlen(argv[idx]);
+ idx++;
+ }
+
+ /*
+ * Alloc the string.
+ */
+ newStr = new char[totalLen +1];
+ if (newStr == NULL)
+ return NULL;
+
+ /*
+ * Finally, allocate the string and copy data over.
+ */
+ idx = posn = 0;
+ while (1) {
+ if (idx == argc || argv[idx] == NULL)
+ break;
+ if (idx)
+ newStr[posn++] = ' ';
+
+ len = strlen(argv[idx]);
+ memcpy(&newStr[posn], argv[idx], len);
+ posn += len;
+
+ idx++;
+ }
+
+ assert(posn == totalLen);
+ newStr[posn] = '\0';
+
+ return newStr;
+}
+
+/*
+ * Count the #of args in an argument vector. Don't count the final NULL.
+ */
+int countArgv(const char* const argv[])
+{
+ int count = 0;
+
+ while (argv[count] != NULL)
+ count++;
+
+ return count;
+}
+
+
+#include <stdio.h>
+/*
+ * Get a file's type.
+ */
+FileType getFileType(const char* fileName)
+{
+ struct stat sb;
+
+ if (stat(fileName, &sb) < 0) {
+ if (errno == ENOENT || errno == ENOTDIR)
+ return kFileTypeNonexistent;
+ else {
+ fprintf(stderr, "getFileType got errno=%d on '%s'\n",
+ errno, fileName);
+ return kFileTypeUnknown;
+ }
+ } else {
+ if (S_ISREG(sb.st_mode))
+ return kFileTypeRegular;
+ else if (S_ISDIR(sb.st_mode))
+ return kFileTypeDirectory;
+ else if (S_ISCHR(sb.st_mode))
+ return kFileTypeCharDev;
+ else if (S_ISBLK(sb.st_mode))
+ return kFileTypeBlockDev;
+ else if (S_ISFIFO(sb.st_mode))
+ return kFileTypeFifo;
+#ifdef HAVE_SYMLINKS
+ else if (S_ISLNK(sb.st_mode))
+ return kFileTypeSymlink;
+ else if (S_ISSOCK(sb.st_mode))
+ return kFileTypeSocket;
+#endif
+ else
+ return kFileTypeUnknown;
+ }
+}
+
+/*
+ * Get a file's modification date.
+ */
+time_t getFileModDate(const char* fileName)
+{
+ struct stat sb;
+
+ if (stat(fileName, &sb) < 0)
+ return (time_t) -1;
+
+ return sb.st_mtime;
+}
+
+/*
+ * Round up to the next highest power of 2.
+ *
+ * Found on http://graphics.stanford.edu/~seander/bithacks.html.
+ */
+unsigned int roundUpPower2(unsigned int val)
+{
+ val--;
+ val |= val >> 1;
+ val |= val >> 2;
+ val |= val >> 4;
+ val |= val >> 8;
+ val |= val >> 16;
+ val++;
+
+ return val;
+}
+
+}; // namespace android
+