Make it possible to build libhardware.

third_party/hwcplus/src/hwcplus_util.c

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <hardware/hardware.h>
+#include <cutils/properties.h>
+
+#define LOG_BUF_SIZE 1024
+
+static int default_log_fn(int prio, const char* tag, const char* msg);
+
+static hwcplus_log_fn_t hwcplus_log_fn = default_log_fn;
+
+void hwcplus_set_log_fn(hwcplus_log_fn_t fn) {
+    hwcplus_log_fn = fn;
+}
+
+#ifndef HAVE_STRLCPY
+size_t strlcpy(char* dst, const char* src, size_t siz) {
+    char* d = dst;
+    const char* s = src;
+    size_t n = siz;
+
+    /* Copy as many bytes as will fit */
+    if (n != 0) {
+        while (--n != 0) {
+            if ((*d++ = *s++) == '\0')
+                break;
+        }
+    }
+
+    /* Not enough room in dst, add NUL and traverse rest of src */
+    if (n == 0) {
+        if (siz != 0)
+            *d = '\0'; /* NUL-terminate dst */
+        while (*s++) {
+        }
+    }
+
+    return(s - src - 1); /* count does not include NUL */
+}
+#endif
+
+static int default_log_fn(int prio, const char* tag, const char* msg) {
+    fprintf(stderr, "<%d> %s %s\n", prio, tag, msg);
+}
+
+int __android_log_write(int prio, const char* tag, const char* msg) {
+    hwcplus_log_fn(prio, tag, msg);
+}
+
+int __android_log_print(int prio, const char* tag, const char* fmt, ...) {
+    va_list ap;
+    char buf[LOG_BUF_SIZE];
+
+    va_start(ap, fmt);
+    vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
+    va_end(ap);
+
+    return __android_log_write(prio, tag, buf);
+}
+
+int property_get(const char* key, char* value, const char* default_value) {
+    printf("property_get %s\n", key);
+    const char* r = default_value;
+    if (!r)
+        r = "";
+    strncpy(value, r, PROPERTY_VALUE_MAX);
+    return strlen(r);
+}
+