adb: win32: fix StringPrintf format string checking of %zd and PRIu64

At runtime, vsnprintf (and android::base::StringPrintf which calls it)
call a mingw version of vsnprintf, not the vsnprintf from MSVCRT.DLL.
The mingw version properly understands %zd and PRIu64 (the latter,
provided that you #include <inttypes.h>).

The problem was that android::base::StringPrintf was causing
compile-time errors saying that %zd and PRIu64 were not recognized. It
seems that this was because the attribute on the function prototypes
specified `printf' instead of `gnu_printf'. Once that was fixed to match
vsnprintf's attribute, the warnings went away.

This uses similar preprocessor techniques as <android/log.h>.

Also restore a %zd usage to avoid a static_cast<>, and make
print_transfer_progress()'s format string compile-time checkable (and
tweak some types and %llu => PRIu64).

Change-Id: I80b31b9994858a28cb7c6847143b86108b8ab842
Signed-off-by: Spencer Low <CompareAndSwap@gmail.com>

adb/adb_client.cpp

@@ -145,8 +145,8 @@ bool adb_status(int fd, std::string* error) {
 int _adb_connect(const std::string& service, std::string* error) {
     D("_adb_connect: %s\n", service.c_str());
     if (service.empty() || service.size() > 1024) {
-        *error = android::base::StringPrintf("bad service name length (%d)",
-                                             static_cast<int>(service.size()));
+        *error = android::base::StringPrintf("bad service name length (%zd)",
+                                             service.size());
         return -1;
     }
 

adb/commandline.cpp

@@ -1593,11 +1593,7 @@ static int install_multiple_app(TransportType transport, const char* serial, int
         return 1;
     }
 
-#if defined(_WIN32) // Remove when we're using clang for Win32.
-    std::string cmd = android::base::StringPrintf("exec:pm install-create -S %u", (unsigned) total_size);
-#else
     std::string cmd = android::base::StringPrintf("exec:pm install-create -S %" PRIu64, total_size);
-#endif
     for (i = 1; i < first_apk; i++) {
         cmd += " " + escape_arg(argv[i]);
     }
@@ -1638,15 +1634,9 @@ static int install_multiple_app(TransportType transport, const char* serial, int
             goto finalize_session;
         }
 
-#if defined(_WIN32) // Remove when we're using clang for Win32.
-        std::string cmd = android::base::StringPrintf(
-                "exec:pm install-write -S %u %d %d_%s -",
-                (unsigned) sb.st_size, session_id, i, get_basename(file));
-#else
         std::string cmd = android::base::StringPrintf(
                 "exec:pm install-write -S %" PRIu64 " %d %d_%s -",
                 static_cast<uint64_t>(sb.st_size), session_id, i, get_basename(file));
-#endif
 
         int localFd = adb_open(file, O_RDONLY);
         if (localFd < 0) {

adb/file_sync_client.cpp

@@ -16,6 +16,7 @@
 
 #include <dirent.h>
 #include <errno.h>
+#include <inttypes.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -63,13 +64,12 @@ static void END()
             total_bytes, (t / 1000000LL), (t % 1000000LL) / 1000LL);
 }
 
-static const char* transfer_progress_format = "\rTransferring: %llu/%llu (%d%%)";
-
-static void print_transfer_progress(unsigned long long bytes_current,
-                                    unsigned long long bytes_total) {
+static void print_transfer_progress(uint64_t bytes_current,
+                                    uint64_t bytes_total) {
     if (bytes_total == 0) return;
 
-    fprintf(stderr, transfer_progress_format, bytes_current, bytes_total,
+    fprintf(stderr, "\rTransferring: %" PRIu64 "/%" PRIu64 " (%d%%)",
+            bytes_current, bytes_total,
             (int) (bytes_current * 100 / bytes_total));
 
     if (bytes_current == bytes_total) {

base/include/base/stringprintf.h

@@ -23,16 +23,32 @@
 namespace android {
 namespace base {
 
+// These printf-like functions are implemented in terms of vsnprintf, so they
+// use the same attribute for compile-time format string checking. On Windows,
+// if the mingw version of vsnprintf is used, use `gnu_printf' which allows z
+// in %zd and PRIu64 (and related) to be recognized by the compile-time
+// checking.
+#define FORMAT_ARCHETYPE __printf__
+#ifdef __USE_MINGW_ANSI_STDIO
+#if __USE_MINGW_ANSI_STDIO
+#undef FORMAT_ARCHETYPE
+#define FORMAT_ARCHETYPE gnu_printf
+#endif
+#endif
+
 // Returns a string corresponding to printf-like formatting of the arguments.
 std::string StringPrintf(const char* fmt, ...)
-    __attribute__((__format__(__printf__, 1, 2)));
+    __attribute__((__format__(FORMAT_ARCHETYPE, 1, 2)));
 
 // Appends a printf-like formatting of the arguments to 'dst'.
 void StringAppendF(std::string* dst, const char* fmt, ...)
-    __attribute__((__format__(__printf__, 2, 3)));
+    __attribute__((__format__(FORMAT_ARCHETYPE, 2, 3)));
 
 // Appends a printf-like formatting of the arguments to 'dst'.
-void StringAppendV(std::string* dst, const char* format, va_list ap);
+void StringAppendV(std::string* dst, const char* format, va_list ap)
+    __attribute__((__format__(FORMAT_ARCHETYPE, 2, 0)));
+
+#undef FORMAT_ARCHETYPE
 
 }  // namespace base
 }  // namespace android