| // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/linux_util.h" |
| |
| #include <stdlib.h> |
| |
| #include <vector> |
| |
| #include "base/command_line.h" |
| #include "base/process_util.h" |
| #include "base/string_util.h" |
| |
| namespace { |
| |
| class EnvironmentVariableGetterImpl |
| : public base::EnvironmentVariableGetter { |
| public: |
| virtual bool Getenv(const char* variable_name, std::string* result) { |
| const char* env_value = ::getenv(variable_name); |
| if (env_value) { |
| // Note that the variable may be defined but empty. |
| *result = env_value; |
| return true; |
| } |
| // Some commonly used variable names are uppercase while others |
| // are lowercase, which is inconsistent. Let's try to be helpful |
| // and look for a variable name with the reverse case. |
| char first_char = variable_name[0]; |
| std::string alternate_case_var; |
| if (first_char >= 'a' && first_char <= 'z') |
| alternate_case_var = StringToUpperASCII(std::string(variable_name)); |
| else if (first_char >= 'A' && first_char <= 'Z') |
| alternate_case_var = StringToLowerASCII(std::string(variable_name)); |
| else |
| return false; |
| env_value = ::getenv(alternate_case_var.c_str()); |
| if (env_value) { |
| *result = env_value; |
| return true; |
| } |
| return false; |
| } |
| }; |
| |
| } // anonymous namespace |
| |
| namespace base { |
| |
| uint8_t* BGRAToRGBA(const uint8_t* pixels, int width, int height, int stride) { |
| if (stride == 0) |
| stride = width * 4; |
| |
| uint8_t* new_pixels = static_cast<uint8_t*>(malloc(height * stride)); |
| |
| // We have to copy the pixels and swap from BGRA to RGBA. |
| for (int i = 0; i < height; ++i) { |
| for (int j = 0; j < width; ++j) { |
| int idx = i * stride + j * 4; |
| new_pixels[idx] = pixels[idx + 2]; |
| new_pixels[idx + 1] = pixels[idx + 1]; |
| new_pixels[idx + 2] = pixels[idx]; |
| new_pixels[idx + 3] = pixels[idx + 3]; |
| } |
| } |
| |
| return new_pixels; |
| } |
| |
| // We use this static string to hold the Linux distro info. If we |
| // crash, the crash handler code will send this in the crash dump. |
| std::string linux_distro = "Unknown"; |
| |
| std::string GetLinuxDistro() { |
| static bool checked_distro = false; |
| if (!checked_distro) { |
| std::vector<std::string> argv; |
| argv.push_back("lsb_release"); |
| argv.push_back("-d"); |
| std::string output; |
| base::GetAppOutput(CommandLine(argv), &output); |
| if (output.length() > 0) { |
| // lsb_release -d should return: Description:<tab>Distro Info |
| static const std::string field = "Description:\t"; |
| if (output.compare(0, field.length(), field) == 0) |
| linux_distro = output.substr(field.length()); |
| } |
| // We do this check only once per process. If it fails, there's |
| // little reason to believe it will work if we attempt to run |
| // lsb_release again. |
| checked_distro = true; |
| } |
| return linux_distro; |
| } |
| |
| // static |
| EnvironmentVariableGetter* EnvironmentVariableGetter::Create() { |
| return new EnvironmentVariableGetterImpl(); |
| } |
| |
| DesktopEnvironment GetDesktopEnvironment(EnvironmentVariableGetter* env) { |
| std::string desktop_session; |
| if (env->Getenv("DESKTOP_SESSION", &desktop_session)) { |
| if (desktop_session == "gnome") |
| return DESKTOP_ENVIRONMENT_GNOME; |
| else if (desktop_session == "kde4") |
| return DESKTOP_ENVIRONMENT_KDE4; |
| else if (desktop_session == "kde") |
| return DESKTOP_ENVIRONMENT_KDE3; |
| } |
| |
| // Fall back on some older environment variables. |
| // Useful particularly in the DESKTOP_SESSION=default case. |
| std::string dummy; |
| if (env->Getenv("GNOME_DESKTOP_SESSION_ID", &dummy)) { |
| return DESKTOP_ENVIRONMENT_GNOME; |
| } else if (env->Getenv("KDE_FULL_SESSION", &dummy)) { |
| if (env->Getenv("KDE_SESSION_VERSION", &dummy)) |
| return DESKTOP_ENVIRONMENT_KDE4; |
| return DESKTOP_ENVIRONMENT_KDE3; |
| } |
| |
| return DESKTOP_ENVIRONMENT_OTHER; |
| } |
| |
| const char* GetDesktopEnvironmentName(DesktopEnvironment env) { |
| switch (env) { |
| case DESKTOP_ENVIRONMENT_OTHER: |
| return NULL; |
| case DESKTOP_ENVIRONMENT_GNOME: |
| return "GNOME"; |
| case DESKTOP_ENVIRONMENT_KDE3: |
| return "KDE3"; |
| case DESKTOP_ENVIRONMENT_KDE4: |
| return "KDE4"; |
| } |
| return NULL; |
| } |
| |
| const char* GetDesktopEnvironmentName(EnvironmentVariableGetter* env) { |
| return GetDesktopEnvironmentName(GetDesktopEnvironment(env)); |
| } |
| |
| } // namespace base |