FileSystem: Add ReadFileWithPartialProgress for multiple files

PCSX2 · Dec 14, 2024 · 6315e60 · 6315e60
1 parent ceb3e10
commit 6315e60
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/common/FileSystem.cpp b/common/FileSystem.cpp
@@ -1189,6 +1189,14 @@ size_t FileSystem::ReadFileWithProgress(std::FILE* fp, void* dst, size_t length,
 {
 	progress->SetProgressRange(100);
 
+	return FileSystem::ReadFileWithPartialProgress(fp, dst, length, progress, 0, 100, error, chunk_size);
+}
+
+size_t FileSystem::ReadFileWithPartialProgress(std::FILE* fp, void* dst, size_t length,
+	ProgressCallback* progress, int startPercent, int endPercent, Error* error, size_t chunk_size)
+{
+	const int deltaPercent = endPercent - startPercent;
+
 	size_t done = 0;
 	while (done < length)
 	{
@@ -1202,7 +1210,7 @@ size_t FileSystem::ReadFileWithProgress(std::FILE* fp, void* dst, size_t length,
 			break;
 		}
 
-		progress->SetProgressValue((done * 100) / length);
+		progress->SetProgressValue(startPercent + (done * deltaPercent) / length);
 		done += read_size;
 	}
 

diff --git a/common/FileSystem.h b/common/FileSystem.h
@@ -135,6 +135,8 @@ namespace FileSystem
 	bool WriteStringToFile(const char* filename, const std::string_view sv);
 	size_t ReadFileWithProgress(std::FILE* fp, void* dst, size_t length, ProgressCallback* progress,
 		Error* error = nullptr, size_t chunk_size = 16 * 1024 * 1024);
+	size_t ReadFileWithPartialProgress(std::FILE* fp, void* dst, size_t length, ProgressCallback* progress,
+		int startPercent, int endPercent, Error* error = nullptr, size_t chunk_size = 16 * 1024 * 1024);
 
 	/// creates a directory in the local filesystem
 	/// if the directory already exists, the return value will be true.