[Lldb-commits] [lldb] r230065 - Start the refactoring of globbing

Zachary Turner zturner at google.com
Fri Feb 20 13:57:11 PST 2015


In a followup patch, would you mind changing the terminology from
GlobArguments to something more descriptive, like ShellExpand?  When I
think glob I only think of wildcards, not full shell exnapsion.  So I think
it would be better if it were more explicit.

On Fri Feb 20 2015 at 1:51:26 PM Enrico Granata <egranata at apple.com> wrote:

> Author: enrico
> Date: Fri Feb 20 15:48:38 2015
> New Revision: 230065
>
> URL: http://llvm.org/viewvc/llvm-project?rev=230065&view=rev
> Log:
> Start the refactoring of globbing
>
> - Add Host::GlobArguments() to perform local-globbing
> I implemented this on OSX and Windows in terms of argdumper (Windows
> implementation is essentially the same as the OSX version + a change in
> binary name and some string magic)
> Other platforms did not specifically chime in, so I left it unimplemented
> for them for the time being. Please feel free to fill in the blanks
>
> - Add Platform::GlobArguments() to support remote-globbing
> For now, no feature change here - but now we have infrastructure to help
> GDBRemote targets to support globbing - and patches to that effect will
> follow
>
> No visible feature change
>
>
> Modified:
>     lldb/trunk/include/lldb/Host/Host.h
>     lldb/trunk/include/lldb/Target/Platform.h
>     lldb/trunk/source/Host/freebsd/Host.cpp
>     lldb/trunk/source/Host/linux/Host.cpp
>     lldb/trunk/source/Host/macosx/Host.mm
>     lldb/trunk/source/Host/windows/Host.cpp
>     lldb/trunk/source/Target/Platform.cpp
>
> Modified: lldb/trunk/include/lldb/Host/Host.h
> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/include/
> lldb/Host/Host.h?rev=230065&r1=230064&r2=230065&view=diff
> ============================================================
> ==================
> --- lldb/trunk/include/lldb/Host/Host.h (original)
> +++ lldb/trunk/include/lldb/Host/Host.h Fri Feb 20 15:48:38 2015
> @@ -253,6 +253,16 @@ public:
>      static Error
>      LaunchProcess (ProcessLaunchInfo &launch_info);
>
> +    //------------------------------------------------------------------
> +    /// Perform globbing of the command-line for this launch info
> +    /// This can potentially involve wildcard expansion
> +    //  environment variable replacement, and whatever other
> +    //  argument magic the platform defines as part of its typical
> +    //  user experience
> +    //------------------------------------------------------------------
> +    static Error
> +    GlobArguments (ProcessLaunchInfo &launch_info);
> +
>      static Error
>      RunShellCommand (const char *command,           // Shouldn't be NULL
>                       const char *working_dir,       // Pass NULL to use
> the current working directory
>
> Modified: lldb/trunk/include/lldb/Target/Platform.h
> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/include/
> lldb/Target/Platform.h?rev=230065&r1=230064&r2=230065&view=diff
> ============================================================
> ==================
> --- lldb/trunk/include/lldb/Target/Platform.h (original)
> +++ lldb/trunk/include/lldb/Target/Platform.h Fri Feb 20 15:48:38 2015
> @@ -386,6 +386,16 @@ namespace lldb_private {
>          LaunchProcess (ProcessLaunchInfo &launch_info);
>
>          //----------------------------------------------------------
> --------
> +        /// Perform globbing of the command-line for this launch info
> +        /// This can potentially involve wildcard expansion
> +        //  environment variable replacement, and whatever other
> +        //  argument magic the platform defines as part of its typical
> +        //  user experience
> +        //----------------------------------------------------------
> --------
> +        virtual Error
> +        GlobArguments (ProcessLaunchInfo &launch_info);
> +
> +        //----------------------------------------------------------
> --------
>          /// Kill process on a platform.
>          //----------------------------------------------------------
> --------
>          virtual Error
>
> Modified: lldb/trunk/source/Host/freebsd/Host.cpp
> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/
> Host/freebsd/Host.cpp?rev=230065&r1=230064&r2=230065&view=diff
> ============================================================
> ==================
> --- lldb/trunk/source/Host/freebsd/Host.cpp (original)
> +++ lldb/trunk/source/Host/freebsd/Host.cpp Fri Feb 20 15:48:38 2015
> @@ -312,3 +312,9 @@ Host::GetUnixSignals ()
>      return s_unix_signals_sp;
>  }
>
> +Error
> +Host::GlobArguments (ProcessLaunchInfo &launch_info)
> +{
> +    return Error("unimplemented");
> +}
> +
>
> Modified: lldb/trunk/source/Host/linux/Host.cpp
> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/
> Host/linux/Host.cpp?rev=230065&r1=230064&r2=230065&view=diff
> ============================================================
> ==================
> --- lldb/trunk/source/Host/linux/Host.cpp (original)
> +++ lldb/trunk/source/Host/linux/Host.cpp Fri Feb 20 15:48:38 2015
> @@ -417,3 +417,8 @@ Host::GetUnixSignals ()
>      return s_unix_signals_sp;
>  }
>
> +Error
> +Host::GlobArguments (ProcessLaunchInfo &launch_info)
> +{
> +    return Error("unimplemented");
> +}
>
> Modified: lldb/trunk/source/Host/macosx/Host.mm
> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/
> Host/macosx/Host.mm?rev=230065&r1=230064&r2=230065&view=diff
> ============================================================
> ==================
> --- lldb/trunk/source/Host/macosx/Host.mm (original)
> +++ lldb/trunk/source/Host/macosx/Host.mm Fri Feb 20 15:48:38 2015
> @@ -45,6 +45,7 @@
>  #include "lldb/Core/ModuleSpec.h"
>  #include "lldb/Core/StreamFile.h"
>  #include "lldb/Core/StreamString.h"
> +#include "lldb/Core/StructuredData.h"
>  #include "lldb/Host/ConnectionFileDescriptor.h"
>  #include "lldb/Host/Endian.h"
>  #include "lldb/Host/FileSpec.h"
> @@ -1351,6 +1352,91 @@ Host::LaunchProcess (ProcessLaunchInfo &
>      return error;
>  }
>
> +Error
> +Host::GlobArguments (ProcessLaunchInfo &launch_info)
> +{
> +    Error error;
> +    if (launch_info.GetFlags().Test(eLaunchFlagGlobArguments))
> +    {
> +        FileSpec glob_tool_spec;
> +        if (!HostInfo::GetLLDBPath(lldb::ePathTypeSupportExecutableDir,
> glob_tool_spec))
> +        {
> +            error.SetErrorString("could not find argdumper tool");
> +            return error;
> +        }
> +        glob_tool_spec.AppendPathComponent("argdumper");
> +        if (!glob_tool_spec.Exists())
> +        {
> +            error.SetErrorString("could not find argdumper tool");
> +            return error;
> +        }
> +
> +        std::string quoted_cmd_string;
> +        launch_info.GetArguments().GetQuotedCommandString(quoted_
> cmd_string);
> +        StreamString glob_command;
> +
> +        glob_command.Printf("%s %s",
> +                            glob_tool_spec.GetPath().c_str(),
> +                            quoted_cmd_string.c_str());
> +
> +        int status;
> +        std::string output;
> +        RunShellCommand(glob_command.GetData(), launch_info.GetWorkingDirectory(),
> &status, nullptr, &output, 10);
> +
> +        if (status != 0)
> +        {
> +            error.SetErrorStringWithFormat("argdumper exited with error
> %d", status);
> +            return error;
> +        }
> +
> +        auto data_sp = StructuredData::ParseJSON(output);
> +        if (!data_sp)
> +        {
> +            error.SetErrorString("invalid JSON");
> +            return error;
> +        }
> +
> +        auto dict_sp = data_sp->GetAsDictionary();
> +        if (!data_sp)
> +        {
> +            error.SetErrorString("invalid JSON");
> +            return error;
> +        }
> +
> +        auto args_sp = dict_sp->GetObjectForDotSeparatedPath("
> arguments");
> +        if (!args_sp)
> +        {
> +            error.SetErrorString("invalid JSON");
> +            return error;
> +        }
> +
> +        auto args_array_sp = args_sp->GetAsArray();
> +        if (!args_array_sp)
> +        {
> +            error.SetErrorString("invalid JSON");
> +            return error;
> +        }
> +
> +        launch_info.GetArguments().Clear();
> +
> +        for (size_t i = 0;
> +             i < args_array_sp->GetSize();
> +             i++)
> +        {
> +            auto item_sp = args_array_sp->GetItemAtIndex(i);
> +            if (!item_sp)
> +                continue;
> +            auto str_sp = item_sp->GetAsString();
> +            if (!str_sp)
> +                continue;
> +
> +            launch_info.GetArguments().AppendArgument(str_sp->
> GetValue().c_str());
> +        }
> +    }
> +
> +    return error;
> +}
> +
>  HostThread
>  Host::StartMonitoringChildProcess(Host::MonitorChildProcessCallback
> callback, void *callback_baton, lldb::pid_t pid, bool monitor_signals)
>  {
>
> Modified: lldb/trunk/source/Host/windows/Host.cpp
> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/
> Host/windows/Host.cpp?rev=230065&r1=230064&r2=230065&view=diff
> ============================================================
> ==================
> --- lldb/trunk/source/Host/windows/Host.cpp (original)
> +++ lldb/trunk/source/Host/windows/Host.cpp Fri Feb 20 15:48:38 2015
> @@ -217,4 +217,90 @@ HostThread
>  Host::StartMonitoringChildProcess(Host::MonitorChildProcessCallback
> callback, void *callback_baton, lldb::pid_t pid, bool monitor_signals)
>  {
>      return HostThread();
> -}
> \ No newline at end of file
> +}
> +
> +Error
> +Host::GlobArguments (ProcessLaunchInfo &launch_info)
> +{
> +    Error error;
> +    if (launch_info.GetFlags().Test(eLaunchFlagGlobArguments))
> +    {
> +        FileSpec glob_tool_spec;
> +        if (!HostInfo::GetLLDBPath(lldb::ePathTypeSupportExecutableDir,
> glob_tool_spec))
> +        {
> +            error.SetErrorString("could not find argdumper tool");
> +            return error;
> +        }
> +        glob_tool_spec.AppendPathComponent("argdumper.exe");
> +        if (!glob_tool_spec.Exists())
> +        {
> +            error.SetErrorString("could not find argdumper tool");
> +            return error;
> +        }
> +
> +        std::string quoted_cmd_string;
> +        launch_info.GetArguments().GetQuotedCommandString(quoted_
> cmd_string);
> +        std::replace(quoted_cmd_string.begin(), quoted_cmd_string.end(),
> '\\', '/');
> +        StreamString glob_command;
> +
> +        glob_command.Printf("%s %s",
> +                            glob_tool_spec.GetPath().c_str(),
> +                            quoted_cmd_string.c_str());
> +
> +        int status;
> +        std::string output;
> +        RunShellCommand(glob_command.GetData(), launch_info.GetWorkingDirectory(),
> &status, nullptr, &output, 10);
> +
> +        if (status != 0)
> +        {
> +            error.SetErrorStringWithFormat("argdumper exited with error
> %d", status);
> +            return error;
> +        }
> +
> +        auto data_sp = StructuredData::ParseJSON(output);
> +        if (!data_sp)
> +        {
> +            error.SetErrorString("invalid JSON");
> +            return error;
> +        }
> +
> +        auto dict_sp = data_sp->GetAsDictionary();
> +        if (!data_sp)
> +        {
> +            error.SetErrorString("invalid JSON");
> +            return error;
> +        }
> +
> +        auto args_sp = dict_sp->GetObjectForDotSeparatedPath("
> arguments");
> +        if (!args_sp)
> +        {
> +            error.SetErrorString("invalid JSON");
> +            return error;
> +        }
> +
> +        auto args_array_sp = args_sp->GetAsArray();
> +        if (!args_array_sp)
> +        {
> +            error.SetErrorString("invalid JSON");
> +            return error;
> +        }
> +
> +        launch_info.GetArguments().Clear();
> +
> +        for (size_t i = 0;
> +             i < args_array_sp->GetSize();
> +             i++)
> +        {
> +            auto item_sp = args_array_sp->GetItemAtIndex(i);
> +            if (!item_sp)
> +                continue;
> +            auto str_sp = item_sp->GetAsString();
> +            if (!str_sp)
> +                continue;
> +
> +            launch_info.GetArguments().AppendArgument(str_sp->
> GetValue().c_str());
> +        }
> +    }
> +
> +    return error;
> +}
>
> Modified: lldb/trunk/source/Target/Platform.cpp
> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/
> Target/Platform.cpp?rev=230065&r1=230064&r2=230065&view=diff
> ============================================================
> ==================
> --- lldb/trunk/source/Target/Platform.cpp (original)
> +++ lldb/trunk/source/Target/Platform.cpp Fri Feb 20 15:48:38 2015
> @@ -1116,87 +1116,9 @@ Platform::LaunchProcess (ProcessLaunchIn
>          }
>          else if (launch_info.GetFlags().Test(eLaunchFlagGlobArguments))
>          {
> -            FileSpec glob_tool_spec;
> -            if (!HostInfo::GetLLDBPath(lldb::ePathTypeSupportExecutableDir,
> glob_tool_spec))
> -            {
> -                error.SetErrorString("could not find argdumper tool");
> +            error = GlobArguments(launch_info);
> +            if (error.Fail())
>                  return error;
> -            }
> -#if defined(_WIN32)
> -            glob_tool_spec.AppendPathComponent("argdumper.exe");
> -#else
> -            glob_tool_spec.AppendPathComponent("argdumper");
> -#endif
> -            if (!glob_tool_spec.Exists())
> -            {
> -                error.SetErrorString("could not find argdumper tool");
> -                return error;
> -            }
> -
> -            std::string quoted_cmd_string;
> -            launch_info.GetArguments().GetQuotedCommandString(quoted_
> cmd_string);
> -#if defined(_WIN32)
> -            std::replace(quoted_cmd_string.begin(),
> quoted_cmd_string.end(), '\\', '/');
> -#endif
> -            StreamString glob_command;
> -
> -            glob_command.Printf("%s %s",
> -                                glob_tool_spec.GetPath().c_str(),
> -                                quoted_cmd_string.c_str());
> -
> -            int status;
> -            std::string output;
> -            RunShellCommand(glob_command.GetData(), launch_info.GetWorkingDirectory(),
> &status, nullptr, &output, 10);
> -
> -            if (status != 0)
> -            {
> -                error.SetErrorStringWithFormat("argdumper exited with
> error %d", status);
> -                return error;
> -            }
> -
> -            auto data_sp = StructuredData::ParseJSON(output);
> -            if (!data_sp)
> -            {
> -                error.SetErrorString("invalid JSON");
> -                return error;
> -            }
> -
> -            auto dict_sp = data_sp->GetAsDictionary();
> -            if (!data_sp)
> -            {
> -                error.SetErrorString("invalid JSON");
> -                return error;
> -            }
> -
> -            auto args_sp = dict_sp->GetObjectForDotSeparatedPath("
> arguments");
> -            if (!args_sp)
> -            {
> -                error.SetErrorString("invalid JSON");
> -                return error;
> -            }
> -
> -            auto args_array_sp = args_sp->GetAsArray();
> -            if (!args_array_sp)
> -            {
> -                error.SetErrorString("invalid JSON");
> -                return error;
> -            }
> -
> -            launch_info.GetArguments().Clear();
> -
> -            for (size_t i = 0;
> -                 i < args_array_sp->GetSize();
> -                 i++)
> -            {
> -                auto item_sp = args_array_sp->GetItemAtIndex(i);
> -                if (!item_sp)
> -                    continue;
> -                auto str_sp = item_sp->GetAsString();
> -                if (!str_sp)
> -                    continue;
> -
> -                launch_info.GetArguments().AppendArgument(str_sp->
> GetValue().c_str());
> -            }
>          }
>
>          if (log)
> @@ -1210,6 +1132,14 @@ Platform::LaunchProcess (ProcessLaunchIn
>  }
>
>  Error
> +Platform::GlobArguments (ProcessLaunchInfo &launch_info)
> +{
> +    if (IsHost())
> +        return Host::GlobArguments(launch_info);
> +    return Error("base lldb_private::Platform class can't glob
> arguments");
> +}
> +
> +Error
>  Platform::KillProcess (const lldb::pid_t pid)
>  {
>      Log *log(lldb_private::GetLogIfAllCategoriesSet
> (LIBLLDB_LOG_PLATFORM));
>
>
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