Added a daemon mode to aapt to receive streams of commands from gradle.

When crunching png, we used to spawn a separate aapt process from java
which is slow and resource intensive.
Introduced a daemon mode to appt which when invoked with -m parameter
will listen from commands on stdin and give report of command execution
on stdout.

One one command is supported so far :
s f1 f2

This command perform a single png crunch, f1 pointing to the input
png file to crunch, and f2 pointing to the path for the resulting
crunced file.

Expected output from the command is "Done" or "Error".

Change-Id: Iaf1d865e8d5ee5d36abe39dea6443715865a98d3

1 files changed, 35 insertions, 0 deletions

diff --git a/tools/aapt/Command.cpp b/tools/aapt/Command.cpp
index 41d8502c5331..1e9e3e20ddf8 100644
--- a/tools/aapt/Command.cpp
+++ b/tools/aapt/Command.cpp
@@ -23,6 +23,10 @@
 #include <errno.h>
 #include <fcntl.h>
 
+#include <iostream>
+#include <string>
+#include <sstream>
+
 using namespace android;
 
 #ifndef AAPT_VERSION
@@ -2506,6 +2510,37 @@ int doSingleCrunch(Bundle* bundle)
     return NO_ERROR;
 }
 
+int runInDaemonMode(Bundle* bundle) {
+    std::cout << "Ready" << std::endl;
+    for (std::string line; std::getline(std::cin, line);) {
+        if (line == "quit") {
+            return NO_ERROR;
+        }
+        std::stringstream ss;
+        ss << line;
+        std::string s;
+
+        std::string command, parameterOne, parameterTwo;
+        std::getline(ss, command, ' ');
+        std::getline(ss, parameterOne, ' ');
+        std::getline(ss, parameterTwo, ' ');
+        if (command[0] == 's') {
+            bundle->setSingleCrunchInputFile(parameterOne.c_str());
+            bundle->setSingleCrunchOutputFile(parameterTwo.c_str());
+            std::cout << "Crunching " << parameterOne << std::endl;
+            if (doSingleCrunch(bundle) != NO_ERROR) {
+                std::cout << "Error" << std::endl;
+            }
+            std::cout << "Done" << std::endl;
+        } else {
+            // in case of invalid command, just bail out.
+            std::cerr << "Unknown command" << std::endl;
+            return -1;
+        }
+    }
+    return -1;
+}
+
 char CONSOLE_DATA[2925] = {
     32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
     32, 32, 32, 32, 32, 32, 32, 95, 46, 32, 32, 32, 32, 32, 32, 32, 32, 32,