Move some Host logic into HostInfo class.

This patch creates a HostInfo class, a static class used to answer
basic queries about the host platform.  As part of this change,
some functionality is moved from Host to HostInfo, and relevant
fixups are performed in the rest of the codebase.

This is part of a larger effort to isolate more code in the Host
layer into platform-specific groups, to make it easier to make
platform specific changes for a particular Host without breaking
other hosts.

Reviewed by: Greg Clayton

Differential Revision: http://reviews.llvm.org/D4963

llvm-svn: 215992

1 files changed, 0 insertions, 133 deletions

diff --git a/lldb/source/Host/linux/Host.cpp b/lldb/source/Host/linux/Host.cpp
index 6c900063c85..a7cca2cb44f 100644
--- a/lldb/source/Host/linux/Host.cpp
+++ b/lldb/source/Host/linux/Host.cpp
@@ -147,28 +147,6 @@ GetLinuxProcessUserAndGroup (lldb::pid_t pid, ProcessInstanceInfo &process_info,
     process_info.SetEffectiveGroupID (eGid);
 }
 
-bool
-Host::GetOSVersion(uint32_t &major,
-                   uint32_t &minor,
-                   uint32_t &update)
-{
-    struct utsname un;
-    int status;
-
-    if (uname(&un))
-        return false;
-
-    status = sscanf(un.release, "%u.%u.%u", &major, &minor, &update);
-    if (status == 3)
-        return true;
-
-    // Some kernels omit the update version, so try looking for just "X.Y" and
-    // set update to 0.
-    update = 0;
-    status = sscanf(un.release, "%u.%u", &major, &minor);
-    return status == 2;
-}
-
 lldb::DataBufferSP
 Host::GetAuxvData(lldb_private::Process *process)
 {
@@ -446,114 +424,3 @@ Host::GetEnvironment (StringList &env)
         env.AppendString(env_entry);
     return i;
 }
-
-const ConstString &
-Host::GetDistributionId ()
-{
-    // Try to run 'lbs_release -i', and use that response
-    // for the distribution id.
-
-    static bool s_evaluated;
-    static ConstString s_distribution_id;
-
-    if (!s_evaluated)
-    {
-        s_evaluated = true;
-
-        Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_HOST));
-        if (log)
-            log->Printf ("attempting to determine Linux distribution...");
-
-        // check if the lsb_release command exists at one of the
-        // following paths
-        const char *const exe_paths[] = {
-            "/bin/lsb_release",
-            "/usr/bin/lsb_release"
-        };
-
-        for (size_t exe_index = 0;
-             exe_index < sizeof (exe_paths) / sizeof (exe_paths[0]);
-             ++exe_index)
-        {
-            const char *const get_distribution_info_exe = exe_paths[exe_index];
-            if (access (get_distribution_info_exe, F_OK))
-            {
-                // this exe doesn't exist, move on to next exe
-                if (log)
-                    log->Printf ("executable doesn't exist: %s",
-                            get_distribution_info_exe);
-                continue;
-            }
-
-            // execute the distribution-retrieval command, read output
-            std::string get_distribution_id_command (get_distribution_info_exe);
-            get_distribution_id_command += " -i";
-
-            FILE *file = popen (get_distribution_id_command.c_str (), "r");
-            if (!file)
-            {
-                if (log)
-                    log->Printf (
-                        "failed to run command: \"%s\", cannot retrieve "
-                        "platform information",
-                        get_distribution_id_command.c_str ());
-                return s_distribution_id;
-            }
-
-            // retrieve the distribution id string.
-            char distribution_id[256] = { '\0' };
-            if (fgets (distribution_id, sizeof (distribution_id) - 1, file)
-                    != NULL)
-            {
-                if (log)
-                    log->Printf ("distribution id command returned \"%s\"",
-                            distribution_id);
-
-                const char *const distributor_id_key = "Distributor ID:\t";
-                if (strstr (distribution_id, distributor_id_key))
-                {
-                    // strip newlines
-                    std::string id_string (distribution_id +
-                            strlen (distributor_id_key));
-                    id_string.erase(
-                        std::remove (
-                            id_string.begin (),
-                            id_string.end (),
-                            '\n'),
-                        id_string.end ());
-
-                    // lower case it and convert whitespace to underscores
-                    std::transform (
-                        id_string.begin(),
-                        id_string.end (),
-                        id_string.begin (),
-                        [] (char ch)
-                        { return tolower ( isspace (ch) ? '_' : ch ); });
-
-                    s_distribution_id.SetCString (id_string.c_str ());
-                    if (log)
-                        log->Printf ("distribution id set to \"%s\"",
-                                s_distribution_id.GetCString ());
-                }
-                else
-                {
-                    if (log)
-                        log->Printf ("failed to find \"%s\" field in \"%s\"",
-                                distributor_id_key, distribution_id);
-                }
-            }
-            else
-            {
-                if (log)
-                    log->Printf (
-                        "failed to retrieve distribution id, \"%s\" returned no"
-                        " lines", get_distribution_id_command.c_str ());
-            }
-
-            // clean up the file
-            pclose(file);
-        }
-    }
-
-    return s_distribution_id;
-}