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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "base/environment.h" | 5 #include "base/environment.h" |
| 6 | 6 |
| 7 #if defined(OS_POSIX) | 7 #if defined(OS_POSIX) |
| 8 #include <stdlib.h> | 8 #include <stdlib.h> |
| 9 #elif defined(OS_WIN) | 9 #elif defined(OS_WIN) |
| 10 #include <windows.h> | 10 #include <windows.h> |
| 11 #endif | 11 #endif |
| 12 | 12 |
| 13 #include "base/string_util.h" | 13 #include "base/string_util.h" |
| 14 | 14 |
| 15 #if defined(OS_WIN) | 15 #if defined(OS_WIN) |
| 16 #include "base/scoped_ptr.h" | 16 #include "base/scoped_ptr.h" |
| 17 #include "base/utf_string_conversions.h" | 17 #include "base/utf_string_conversions.h" |
| 18 #endif | 18 #endif |
| 19 | 19 |
| 20 namespace { | 20 namespace { |
| 21 | 21 |
| 22 class EnvironmentImpl : public base::Environment { | 22 class EnvironmentImpl : public base::Environment { |
| 23 public: | 23 public: |
| 24 virtual bool GetEnv(const char* variable_name, std::string* result) { | 24 virtual bool GetVar(const char* variable_name, std::string* result) { |
| 25 if (GetEnvImpl(variable_name, result)) | 25 if (GetVarImpl(variable_name, result)) |
| 26 return true; | 26 return true; |
| 27 | 27 |
| 28 // Some commonly used variable names are uppercase while others | 28 // Some commonly used variable names are uppercase while others |
| 29 // are lowercase, which is inconsistent. Let's try to be helpful | 29 // are lowercase, which is inconsistent. Let's try to be helpful |
| 30 // and look for a variable name with the reverse case. | 30 // and look for a variable name with the reverse case. |
| 31 // I.e. HTTP_PROXY may be http_proxy for some users/systems. | 31 // I.e. HTTP_PROXY may be http_proxy for some users/systems. |
| 32 char first_char = variable_name[0]; | 32 char first_char = variable_name[0]; |
| 33 std::string alternate_case_var; | 33 std::string alternate_case_var; |
| 34 if (first_char >= 'a' && first_char <= 'z') | 34 if (first_char >= 'a' && first_char <= 'z') |
| 35 alternate_case_var = StringToUpperASCII(std::string(variable_name)); | 35 alternate_case_var = StringToUpperASCII(std::string(variable_name)); |
| 36 else if (first_char >= 'A' && first_char <= 'Z') | 36 else if (first_char >= 'A' && first_char <= 'Z') |
| 37 alternate_case_var = StringToLowerASCII(std::string(variable_name)); | 37 alternate_case_var = StringToLowerASCII(std::string(variable_name)); |
| 38 else | 38 else |
| 39 return false; | 39 return false; |
| 40 return GetEnvImpl(alternate_case_var.c_str(), result); | 40 return GetVarImpl(alternate_case_var.c_str(), result); |
| 41 } | 41 } |
| 42 | 42 |
| 43 virtual bool SetVar(const char* variable_name, const std::string& new_value) { | 43 virtual bool SetVar(const char* variable_name, const std::string& new_value) { |
| 44 return SetVarImpl(variable_name, new_value); | 44 return SetVarImpl(variable_name, new_value); |
| 45 } | 45 } |
| 46 | 46 |
| 47 virtual bool UnSetVar(const char* variable_name) { | 47 virtual bool UnSetVar(const char* variable_name) { |
| 48 return UnSetVarImpl(variable_name); | 48 return UnSetVarImpl(variable_name); |
| 49 } | 49 } |
| 50 | 50 |
| 51 private: | 51 private: |
| 52 bool GetEnvImpl(const char* variable_name, std::string* result) { | 52 bool GetVarImpl(const char* variable_name, std::string* result) { |
| 53 #if defined(OS_POSIX) | 53 #if defined(OS_POSIX) |
| 54 const char* env_value = getenv(variable_name); | 54 const char* env_value = getenv(variable_name); |
| 55 if (!env_value) | 55 if (!env_value) |
| 56 return false; | 56 return false; |
| 57 // Note that the variable may be defined but empty. | 57 // Note that the variable may be defined but empty. |
| 58 if (result) | 58 if (result) |
| 59 *result = env_value; | 59 *result = env_value; |
| 60 return true; | 60 return true; |
| 61 #elif defined(OS_WIN) | 61 #elif defined(OS_WIN) |
| 62 DWORD value_length = ::GetEnvironmentVariable( | 62 DWORD value_length = ::GetEnvironmentVariable( |
| (...skipping 50 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 113 } // namespace env_vars | 113 } // namespace env_vars |
| 114 | 114 |
| 115 Environment::~Environment() {} | 115 Environment::~Environment() {} |
| 116 | 116 |
| 117 // static | 117 // static |
| 118 Environment* Environment::Create() { | 118 Environment* Environment::Create() { |
| 119 return new EnvironmentImpl(); | 119 return new EnvironmentImpl(); |
| 120 } | 120 } |
| 121 | 121 |
| 122 bool Environment::HasVar(const char* variable_name) { | 122 bool Environment::HasVar(const char* variable_name) { |
| 123 return GetEnv(variable_name, NULL); | 123 return GetVar(variable_name, NULL); |
| 124 } | 124 } |
| 125 | 125 |
| 126 } // namespace base | 126 } // namespace base |
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