commit 4b86549b14b30a0ba4381c09c5ce5185ad56bf1c
author Yifan Hong <elsk@google.com> Tue Feb 28 19:38:24 2017 -0800
committer Yifan Hong <elsk@google.com> Tue Feb 28 20:30:30 2017 -0800
tree 508917991c8921503eb18138b0fdeabe185347e2
parent 180bb92608a9bf24ab11a101b87844ea478b0324

lshal --vintf to create a skeleton hal manifest.

Run it as follows:
lshal --init-vintf=/data/a.xml
lshal --init-vintf > /data/a.xml

Test: lshal --init-vintf with and without path argument
Bug: 35852743
Change-Id: Ief9385fc2764a487d1a70644699e01133bdc8a8e

cmds/lshal/Lshal.h

diff --git a/cmds/lshal/Lshal.h b/cmds/lshal/Lshal.h
index ead99dc..1c30908 100644
--- a/cmds/lshal/Lshal.h
+++ b/cmds/lshal/Lshal.h
@@ -19,12 +19,13 @@
 
 #include <stdint.h>
 
-#include <iostream>
+#include <fstream>
 #include <string>
 #include <vector>
 
 #include <android/hidl/manager/1.0/IServiceManager.h>
 
+#include "NullableOStream.h"
 #include "TableEntry.h"
 
 namespace android {
@@ -38,6 +39,7 @@
     DUMP_BINDERIZED_ERROR                   = 1 << 3,
     DUMP_PASSTHROUGH_ERROR                  = 1 << 4,
     DUMP_ALL_LIBS_ERROR                     = 1 << 5,
+    IO_ERROR                                = 1 << 6,
 };
 using Status = unsigned int;
 
@@ -49,7 +51,7 @@
     Status parseArgs(int argc, char **argv);
     Status fetch();
     void postprocess();
-    void dump() const;
+    void dump();
     void usage() const;
     void putEntry(TableEntry &&entry);
     Status fetchPassthrough(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);
@@ -57,6 +59,8 @@
     Status fetchAllLibraries(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);
     bool getReferencedPids(
         pid_t serverPid, std::map<uint64_t, Pids> *objects) const;
+    void dumpTable() const;
+    void dumpVintf() const;
     void printLine(
             const std::string &interfaceName,
             const std::string &transport, const std::string &server,
@@ -70,12 +74,14 @@
     void removeDeadProcesses(Pids *pids);
 
     Table mTable{};
-    std::ostream &mErr = std::cerr;
-    std::ostream &mOut = std::cout;
+    NullableOStream<std::ostream> mErr = std::cerr;
+    NullableOStream<std::ostream> mOut = std::cout;
+    NullableOStream<std::ofstream> mFileOutput = nullptr;
     TableEntryCompare mSortColumn = nullptr;
     TableEntrySelect mSelectedColumns = 0;
     // If true, cmdlines will be printed instead of pid.
-    bool mEnableCmdlines;
+    bool mEnableCmdlines = false;
+    bool mVintf = false;
     // If an entry does not exist, need to ask /proc/{pid}/cmdline to get it.
     // If an entry exist but is an empty string, process might have died.
     // If an entry exist and not empty, it contains the cached content of /proc/{pid}/cmdline.