Remove SetExecutablePath, simplify ResourcePath

SetExecutablePath isn't used anymore.

Nobody was using the fancy select-per-platform functionality, and the
documentation was wrong anyway. In the cases somebody needed an
override per platform, they were using defines in their own test
instead. I think that is more verbose but more predictable and easy
to understand (see how it's done in audio_processing_unittest.cc
when loading output_data_mac, for instance).

Bug: webrtc:9792
Change-Id: I7289bf5883fe43852638922d7c7583eae0c08601
Reviewed-on: https://webrtc-review.googlesource.com/c/104482
Commit-Queue: Patrik Höglund <phoglund@webrtc.org>
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25062}

modules/audio_coding/BUILD.gn

@@ -1756,7 +1756,6 @@ if (rtc_include_tests) {
       ":neteq_test_support",
       "../..:webrtc_common",
       "../../rtc_base:rtc_base_approved",
-      "../../test:fileutils",
       "../../test:test_support",
     ]
   }

modules/audio_coding/neteq/test/neteq_speed_test.cc

@@ -14,7 +14,6 @@
 
 #include "modules/audio_coding/neteq/tools/neteq_performance_test.h"
 #include "rtc_base/flags.h"
-#include "test/testsupport/fileutils.h"
 
 // Define command line flags.
 DEFINE_int(runtime_ms, 10000, "Simulated runtime in ms.");
@@ -33,7 +32,6 @@ int main(int argc, char* argv[]) {
       "  --lossrate=N           drop every N packets; default is 10\n"
       "  --drift=F              clockdrift factor between 0.0 and 1.0; "
       "default is 0.1\n";
-  webrtc::test::SetExecutablePath(argv[0]);
   if (rtc::FlagList::SetFlagsFromCommandLine(&argc, argv, true) || FLAG_help ||
       argc != 1) {
     printf("%s", usage.c_str());

rtc_base/BUILD.gn

@@ -192,6 +192,7 @@ rtc_source_set("rtc_event") {
 
 rtc_source_set("logging") {
   visibility = [ "*" ]
+  libs = []
   deps = [
     ":criticalsection",
     ":macromagic",
@@ -222,6 +223,10 @@ rtc_source_set("logging") {
     # logging.h needs the deprecation header while downstream projects are
     # removing code that depends on logging implementation details.
     deps += [ ":deprecation" ]
+
+    if (is_android) {
+      libs += [ "log" ]
+    }
   }
 }
 
@@ -248,6 +253,7 @@ rtc_source_set("atomicops") {
 rtc_source_set("checks") {
   # TODO(bugs.webrtc.org/9607): This should not be public.
   visibility = [ "*" ]
+  libs = []
   sources = [
     "checks.cc",
     "checks.h",
@@ -256,6 +262,9 @@ rtc_source_set("checks") {
     ":safe_compare",
     "system:inline",
   ]
+  if (is_android) {
+    libs += [ "log" ]
+  }
 }
 
 rtc_source_set("rate_limiter") {
@@ -1083,7 +1092,6 @@ if (rtc_include_tests) {
       "../system_wrappers:field_trial",
       "../system_wrappers:metrics",
       "../test:field_trial",
-      "../test:fileutils",
       "../test:test_support",
     ]
 

rtc_base/unittest_main.cc

@@ -22,7 +22,6 @@
 #include "system_wrappers/include/field_trial.h"
 #include "system_wrappers/include/metrics.h"
 #include "test/field_trial.h"
-#include "test/testsupport/fileutils.h"
 
 #if defined(WEBRTC_WIN)
 #include "rtc_base/win32socketinit.h"
@@ -81,7 +80,6 @@ int main(int argc, char* argv[]) {
     return 0;
   }
 
-  webrtc::test::SetExecutablePath(argv[0]);
   webrtc::test::ValidateFieldTrialsStringOrDie(FLAG_force_fieldtrials);
   // InitFieldTrialsFromString stores the char*, so the char array must outlive
   // the application.

rtc_tools/event_log_visualizer/main.cc

@@ -218,7 +218,6 @@ int main(int argc, char* argv[]) {
     return 0;
   }
 
-  webrtc::test::SetExecutablePath(argv[0]);
   webrtc::test::ValidateFieldTrialsStringOrDie(FLAG_force_fieldtrials);
   // InitFieldTrialsFromString stores the char*, so the char array must outlive
   // the application.

test/BUILD.gn

@@ -208,12 +208,17 @@ if (rtc_include_tests) {
     ]
     deps = [
       ":field_trial",
-      ":fileutils",
       ":perf_test",
       "../rtc_base:rtc_base",
       "../system_wrappers:field_trial",
       "../system_wrappers:metrics",
       "//testing/gtest",
+
+      # TODO(bugs.webrtc.org/9792): This is needed for downstream projects on
+      # Android, where it's replaced by an internal version of fileutils that
+      # has a certain flag. Remove this once the internal fileutils has been
+      # eliminated.
+      "../test:fileutils",
     ]
   }
 

test/test_main.cc

@@ -86,7 +86,13 @@ int main(int argc, char* argv[]) {
     return 0;
   }
 
-  webrtc::test::SetExecutablePath(argv[0]);
+  // TODO(bugs.webrtc.org/9792): we need to reference something from fileutils.h
+  // so that our downstream hack where we replace fileutils.cc works. Otherwise
+  // the downstream flag implementation will take over and botch the flag
+  // introduced by the hack. Remove this awful thing once the downstream
+  // implementation has been eliminated.
+  (void)webrtc::test::JoinFilename("horrible", "hack");
+
   webrtc::test::ValidateFieldTrialsStringOrDie(FLAG_force_fieldtrials);
   // InitFieldTrialsFromString stores the char*, so the char array must outlive
   // the application.

test/testsupport/fileutils.cc

@@ -81,9 +81,6 @@ const char* kAndroidChromiumTestsRoot = "/sdcard/chromium_tests_root/";
 const char* kResourcesDirName = "resources";
 #endif
 
-char relative_dir_path[FILENAME_MAX];
-bool relative_dir_path_set = false;
-
 }  // namespace
 
 const char* kCannotFindProjectRootDir = "ERROR_CANNOT_FIND_PROJECT_ROOT_DIR";
@@ -101,27 +98,6 @@ std::string DirName(const std::string& path) {
   return result.substr(0, result.find_last_of(kPathDelimiter));
 }
 
-void SetExecutablePath(const std::string& path) {
-  std::string working_dir = WorkingDir();
-  std::string temp_path = path;
-
-  // Handle absolute paths; convert them to relative paths to the working dir.
-  if (path.find(working_dir) != std::string::npos) {
-    temp_path = path.substr(working_dir.length() + 1);
-  }
-// On Windows, when tests are run under memory tools like DrMemory and TSan,
-// slashes occur in the path as directory separators. Make sure we replace
-// such cases with backslashes in order for the paths to be correct.
-#ifdef WIN32
-  std::replace(temp_path.begin(), temp_path.end(), '/', '\\');
-#endif
-
-  // Trim away the executable name; only store the relative dir path.
-  temp_path = DirName(temp_path);
-  strncpy(relative_dir_path, temp_path.c_str(), FILENAME_MAX);
-  relative_dir_path_set = true;
-}
-
 bool FileExists(const std::string& file_name) {
   struct stat file_info = {0};
   return stat(file_name.c_str(), &file_info) == 0;
@@ -325,27 +301,10 @@ std::string ResourcePath(const std::string& name,
 #if defined(WEBRTC_IOS)
   return IOSResourcePath(name, extension);
 #else
-  std::string platform = "win";
-#ifdef WEBRTC_LINUX
-  platform = "linux";
-#endif  // WEBRTC_LINUX
-#ifdef WEBRTC_MAC
-  platform = "mac";
-#endif  // WEBRTC_MAC
-#ifdef WEBRTC_ANDROID
-  platform = "android";
-#endif  // WEBRTC_ANDROID
-
   std::string resources_path =
       ProjectRootPath() + kResourcesDirName + kPathDelimiter;
-  std::string resource_file =
-      resources_path + name + "_" + platform + "." + extension;
-  if (FileExists(resource_file)) {
-    return resource_file;
-  }
-  // Fall back on name without platform.
   return resources_path + name + "." + extension;
-#endif  // defined (WEBRTC_IOS)
+#endif
 }
 
 std::string JoinFilename(const std::string& dir, const std::string& name) {

test/testsupport/fileutils.h

@@ -51,18 +51,8 @@ std::string TempFilename(const std::string& dir, const std::string& prefix);
 std::string GenerateTempFilename(const std::string& dir,
                                  const std::string& prefix);
 
-// Returns a path to a resource file for the currently executing platform.
-// Adapts to what filenames are currently present in the
-// [project-root]/resources/ dir.
-// Returns an absolute path according to this priority list (the directory
-// part of the path is left out for readability):
-// 1. [name]_[platform]_[architecture].[extension]
-// 2. [name]_[platform].[extension]
-// 3. [name]_[architecture].[extension]
-// 4. [name].[extension]
-// Where
-// * platform is either of "win", "mac" or "linux".
-// * architecture is either of "32" or "64".
+// Returns a path to a resource file in [project-root]/resources/ dir.
+// Returns an absolute path
 //
 // Arguments:
 //    name - Name of the resource file. If a plain filename (no directory path)
@@ -110,15 +100,6 @@ std::string DirName(const std::string& path);
 // empty or if the file does not exist/is readable.
 size_t GetFileSize(const std::string& filename);
 
-// Sets the executable path, i.e. the path to the executable that is being used
-// when launching it. This is usually the path relative to the working directory
-// but can also be an absolute path. The intention with this function is to pass
-// the argv[0] being sent into the main function to make it possible for
-// fileutils.h to find the correct project paths even when the working directory
-// is outside the project tree (which happens in some cases).
-// TODO(bugs.webrtc.org/9792): Deprecated - going away soon.
-void SetExecutablePath(const std::string& path_to_executable);
-
 }  // namespace test
 }  // namespace webrtc