cpp/openttd-patchpack/source Changeset - r24526:74cfd45960ed

Changeset - r24526:74cfd45960ed

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Michael Lutz - 4 years ago 2020-12-06 20:11:47
michi@icosahedron.de

Codechange: Even more std::string usage in file IO.

9 files changed with 48 insertions and 63 deletions:

src/fileio.cpp

src/fileio_func.h

src/game/game_text.cpp

src/network/network_content.cpp

src/newgrf_profiling.cpp

src/openttd.cpp

src/saveload/oldloader.cpp

src/saveload/saveload.cpp

src/saveload/saveload.h

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src/fileio.cpp

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@@ @@ -272,7 +272,7 @@ bool IsValidSearchPath(Searchpath sp) @@
  */
 bool FioCheckFileExists(const std::string &filename, Subdirectory subdir)
+{
-	FILE *f = FioFOpenFile(filename.c_str(), "rb", subdir);
 	FILE *f = FioFOpenFile(filename, "rb", subdir);
 	if (f == nullptr) return false;
 	FioFCloseFile(f);
@@ @@ -345,7 +345,7 @@ std::string FioFindDirectory(Subdirector @@
 	return _personal_dir;
+}
-static FILE *FioFOpenFileSp(const char *filename, const char *mode, Searchpath sp, Subdirectory subdir, size_t *filesize)
+static FILE *FioFOpenFileSp(const std::string &filename, const char *mode, Searchpath sp, Subdirectory subdir, size_t *filesize)
+{
 #if defined(_WIN32) && defined(UNICODE)
 	/* fopen is implemented as a define with ellipses for
@@ @@ -390,17 +390,17 @@ static FILE *FioFOpenFileSp(const char * @@
  * @return File handle of the opened file, or \c nullptr if the file is not available.
  * @note The file is read from within the tar file, and may not return \c EOF after reading the whole file.
  */
-FILE *FioFOpenFileTar(TarFileListEntry *entry, size_t *filesize)
+FILE *FioFOpenFileTar(const TarFileListEntry &entry, size_t *filesize)
+{
-	FILE *f = fopen(entry->tar_filename, "rb");
+	FILE *f = fopen(entry.tar_filename, "rb");
 	if (f == nullptr) return f;
-	if (fseek(f, entry->position, SEEK_SET) < 0) {
+	if (fseek(f, entry.position, SEEK_SET) < 0) {
 		fclose(f);
 		return nullptr;
+	}
-	if (filesize != nullptr) *filesize = entry->size;
+	if (filesize != nullptr) *filesize = entry.size;
 	return f;
+}
@@ @@ -410,7 +410,7 @@ FILE *FioFOpenFileTar(TarFileListEntry * @@
  * @param subdir Subdirectory to open.
  * @return File handle of the opened file, or \c nullptr if the file is not available.
  */
-FILE *FioFOpenFile(const char *filename, const char *mode, Subdirectory subdir, size_t *filesize)
+FILE *FioFOpenFile(const std::string &filename, const char *mode, Subdirectory subdir, size_t *filesize)
+{
 	FILE *f = nullptr;
 	Searchpath sp;
@@ @@ -424,11 +424,8 @@ FILE *FioFOpenFile(const char *filename, @@
 	/* We can only use .tar in case of data-dir, and read-mode */
 	if (f == nullptr && mode[0] == 'r' && subdir != NO_DIRECTORY) {
 		static const uint MAX_RESOLVED_LENGTH = 2 * (100 + 100 + 155) + 1; // Enough space to hold two filenames plus link. See 'TarHeader'.
 		char resolved_name[MAX_RESOLVED_LENGTH];
 		/* Filenames in tars are always forced to be lowercase */
-		strecpy(resolved_name, filename, lastof(resolved_name));
+		std::string resolved_name = filename;
 		strtolower(resolved_name);
 		/* Resolve ".." */
@@ @@ -443,36 +440,31 @@ FILE *FioFOpenFile(const char *filename, @@
 				tokens.push_back(token);
+			}
+		}
 		resolved_name[0] = '\0';
 		resolved_name.clear();
 		bool first = true;
 		for (const std::string &token : tokens) {
 			if (!first) {
-				strecat(resolved_name, PATHSEP, lastof(resolved_name));
+				resolved_name += PATHSEP;
+			}
-			strecat(resolved_name, token.c_str(), lastof(resolved_name));
+			resolved_name += token;
 			first = false;
+		}
 		size_t resolved_len = strlen(resolved_name);
 		/* Resolve ONE directory link */
 		for (TarLinkList::iterator link = _tar_linklist[subdir].begin(); link != _tar_linklist[subdir].end(); link++) {
 			const std::string &src = link->first;
 			size_t len = src.length();
-			if (resolved_len >= len && resolved_name[len - 1] == PATHSEPCHAR && strncmp(src.c_str(), resolved_name, len) == 0) {
+			if (resolved_name.length() >= len && resolved_name[len - 1] == PATHSEPCHAR && src.compare(0, len, resolved_name, 0, len) == 0) {
 				/* Apply link */
 				char resolved_name2[MAX_RESOLVED_LENGTH];
 				const std::string &dest = link->second;
 				strecpy(resolved_name2, &(resolved_name[len]), lastof(resolved_name2));
 				strecpy(resolved_name, dest.c_str(), lastof(resolved_name));
 				strecpy(&(resolved_name[dest.length()]), resolved_name2, lastof(resolved_name));
 				resolved_name.replace(0, len, link->second);
 				break; // Only resolve one level
+			}
+		}
 		TarFileList::iterator it = _tar_filelist[subdir].find(resolved_name);
 		if (it != _tar_filelist[subdir].end()) {
-			f = FioFOpenFileTar(&((*it).second), filesize);
+			f = FioFOpenFileTar(it->second, filesize);
+		}
+	}
@@ @@ -859,7 +851,7 @@ bool TarScanner::AddFile(const char *fil @@
  * @param subdir The sub directory the tar is in.
  * @return false on failure.
  */
-bool ExtractTar(const char *tar_filename, Subdirectory subdir)
+bool ExtractTar(const std::string &tar_filename, Subdirectory subdir)
+{
 	TarList::iterator it = _tar_list[subdir].find(tar_filename);
 	/* We don't know the file. */
@@ @@ -869,41 +861,38 @@ bool ExtractTar(const char *tar_filename @@
 	/* The file doesn't have a sub directory! */
 	if (dirname == nullptr) {
 		DEBUG(misc, 1, "Extracting %s failed; archive rejected, the contents must be in a sub directory", tar_filename);
+		DEBUG(misc, 1, "Extracting %s failed; archive rejected, the contents must be in a sub directory", tar_filename.c_str());
 		return false;
+	}
 	char filename[MAX_PATH];
 	strecpy(filename, tar_filename, lastof(filename));
 	char *p = strrchr(filename, PATHSEPCHAR);
 	std::string filename = tar_filename;
 	auto p = filename.find_last_of(PATHSEPCHAR);
 	/* The file's path does not have a separator? */
-	if (p == nullptr) return false;
+	if (p == std::string::npos) return false;
 	p++;
 	strecpy(p, dirname, lastof(filename));
 	DEBUG(misc, 8, "Extracting %s to directory %s", tar_filename, filename);
 	filename.replace(p + 1, std::string::npos, dirname);
 	DEBUG(misc, 8, "Extracting %s to directory %s", tar_filename.c_str(), filename.c_str());
 	FioCreateDirectory(filename);
 	for (TarFileList::iterator it2 = _tar_filelist[subdir].begin(); it2 != _tar_filelist[subdir].end(); it2++) {
-		if (strcmp((*it2).second.tar_filename, tar_filename) != 0) continue;
+		if (tar_filename != it2->second.tar_filename) continue;
-		strecpy(p, (*it2).first.c_str(), lastof(filename));
+		filename.replace(p + 1, std::string::npos, it2->first);
 		DEBUG(misc, 9, "  extracting %s", filename);
+		DEBUG(misc, 9, "  extracting %s", filename.c_str());
 		/* First open the file in the .tar. */
 		size_t to_copy = 0;
 		FILE *in = FioFOpenFileTar(&(*it2).second, &to_copy);
 		if (in == nullptr) {
 			DEBUG(misc, 6, "Extracting %s failed; could not open %s", filename, tar_filename);
 		std::unique_ptr<FILE, FileDeleter> in(FioFOpenFileTar(it2->second, &to_copy));
 		if (!in) {
 			DEBUG(misc, 6, "Extracting %s failed; could not open %s", filename.c_str(), tar_filename.c_str());
 			return false;
+		}
 		/* Now open the 'output' file. */
 		FILE *out = fopen(filename, "wb");
 		if (out == nullptr) {
 			DEBUG(misc, 6, "Extracting %s failed; could not open %s", filename, filename);
 			fclose(in);
 		std::unique_ptr<FILE, FileDeleter> out(fopen(filename.c_str(), "wb"));
 		if (!out) {
 			DEBUG(misc, 6, "Extracting %s failed; could not open %s", filename.c_str(), filename.c_str());
 			return false;
+		}
@@ @@ -911,16 +900,12 @@ bool ExtractTar(const char *tar_filename @@
 		char buffer[4096];
 		size_t read;
 		for (; to_copy != 0; to_copy -= read) {
 			read = fread(buffer, 1, min(to_copy, lengthof(buffer)), in);
 			if (read <= 0 || fwrite(buffer, 1, read, out) != read) break;
 			read = fread(buffer, 1, min(to_copy, lengthof(buffer)), in.get());
 			if (read <= 0 || fwrite(buffer, 1, read, out.get()) != read) break;
+		}
 		/* Close everything up. */
 		fclose(in);
 		fclose(out);
 		if (to_copy != 0) {
 			DEBUG(misc, 6, "Extracting %s failed; still %i bytes to copy", filename, (int)to_copy);
+			DEBUG(misc, 6, "Extracting %s failed; still %i bytes to copy", filename.c_str(), (int)to_copy);
 			return false;
+		}
+	}

src/fileio_func.h

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@@ @@ -37,7 +37,7 @@ bool IsValidSearchPath(Searchpath sp); @@
 #define FOR_ALL_SEARCHPATHS(sp) for (sp = SP_FIRST_DIR; sp < NUM_SEARCHPATHS; sp++) if (IsValidSearchPath(sp))
 void FioFCloseFile(FILE *f);
-FILE *FioFOpenFile(const char *filename, const char *mode, Subdirectory subdir, size_t *filesize = nullptr);
+FILE *FioFOpenFile(const std::string &filename, const char *mode, Subdirectory subdir, size_t *filesize = nullptr);
 bool FioCheckFileExists(const std::string &filename, Subdirectory subdir);
 std::string FioFindFullPath(Subdirectory subdir, const char *filename);
 std::string FioGetDirectory(Searchpath sp, Subdirectory subdir);
@@ @@ -51,7 +51,7 @@ void AppendPathSeparator(std::string &bu @@
 void DeterminePaths(const char *exe);
 void *ReadFileToMem(const char *filename, size_t *lenp, size_t maxsize);
 bool FileExists(const std::string &filename);
-bool ExtractTar(const char *tar_filename, Subdirectory subdir);
+bool ExtractTar(const std::string &tar_filename, Subdirectory subdir);
 extern std::string _personal_dir; ///< custom directory for personal settings, saves, newgrf, etc.

src/game/game_text.cpp

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@@ @@ -66,7 +66,7 @@ void NORETURN CDECL strgen_fatal(const c @@
 LanguageStrings ReadRawLanguageStrings(const std::string &file)
+{
 	size_t to_read;
-	FILE *fh = FioFOpenFile(file.c_str(), "rb", GAME_DIR, &to_read);
 	FILE *fh = FioFOpenFile(file, "rb", GAME_DIR, &to_read);
 	if (fh == nullptr) return LanguageStrings();
 	FileCloser fhClose(fh);

src/network/network_content.cpp

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@@ @@ -543,7 +543,7 @@ void ClientNetworkContentSocketHandler:: @@
 		if (this->curInfo->type == CONTENT_TYPE_BASE_MUSIC) {
 			/* Music can't be in a tar. So extract the tar! */
-			ExtractTar(fname.c_str(), BASESET_DIR);
 			ExtractTar(fname, BASESET_DIR);
 			unlink(fname.c_str());
+		}

src/newgrf_profiling.cpp

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@@ @@ -102,7 +102,7 @@ uint32 NewGRFProfiler::Finish() @@
 	std::string filename = this->GetOutputFilename();
 	IConsolePrintF(CC_DEBUG, "Finished profile of NewGRF [%08X], writing %u events to %s", BSWAP32(this->grffile->grfid), (uint)this->calls.size(), filename.c_str());
-	FILE *f = FioFOpenFile(filename.c_str(), "wt", Subdirectory::NO_DIRECTORY);
 	FILE *f = FioFOpenFile(filename, "wt", Subdirectory::NO_DIRECTORY);
 	FileCloser fcloser(f);
 	uint32 total_microseconds = 0;

src/openttd.cpp

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@@ @@ -968,7 +968,7 @@ bool SafeLoad(const std::string &filenam @@
 	_game_mode = newgm;
-	switch (lf == nullptr ? SaveOrLoad(filename.c_str(), fop, dft, subdir) : LoadWithFilter(lf)) {
 	switch (lf == nullptr ? SaveOrLoad(filename, fop, dft, subdir) : LoadWithFilter(lf)) {
 		case SL_OK: return true;
 		case SL_REINIT:
@@ @@ -1127,7 +1127,7 @@ void SwitchToMode(SwitchMode new_mode) @@
 		case SM_SAVE_GAME: // Save game.
 			/* Make network saved games on pause compatible to singleplayer */
-			if (SaveOrLoad(_file_to_saveload.name.c_str(), SLO_SAVE, DFT_GAME_FILE, NO_DIRECTORY) != SL_OK) {
 			if (SaveOrLoad(_file_to_saveload.name, SLO_SAVE, DFT_GAME_FILE, NO_DIRECTORY) != SL_OK) {
 				SetDParamStr(0, GetSaveLoadErrorString());
 				ShowErrorMessage(STR_JUST_RAW_STRING, INVALID_STRING_ID, WL_ERROR);
 			} else {

src/saveload/oldloader.cpp

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@@ @@ -271,7 +271,7 @@ static SavegameType DetermineOldSavegame @@
 typedef bool LoadOldMainProc(LoadgameState *ls);
-bool LoadOldSaveGame(const char *file)
+bool LoadOldSaveGame(const std::string &file)
+{
 	LoadgameState ls;
@@ @@ -283,7 +283,7 @@ bool LoadOldSaveGame(const char *file) @@
 	ls.file = FioFOpenFile(file, "rb", NO_DIRECTORY);
 	if (ls.file == nullptr) {
 		DEBUG(oldloader, 0, "Cannot open file '%s'", file);
+		DEBUG(oldloader, 0, "Cannot open file '%s'", file.c_str());
 		return false;
+	}

src/saveload/saveload.cpp

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@@ @@ -2413,7 +2413,7 @@ static const SaveLoadFormat *GetSavegame @@
 /* actual loader/saver function */
 void InitializeGame(uint size_x, uint size_y, bool reset_date, bool reset_settings);
 extern bool AfterLoadGame();
-extern bool LoadOldSaveGame(const char *file);
+extern bool LoadOldSaveGame(const std::string &file);
 /**
  * Clear temporary data that is passed between various saveload phases.
@@ @@ -2769,7 +2769,7 @@ SaveOrLoadResult LoadWithFilter(LoadFilt @@
  * @param threaded True when threaded saving is allowed
  * @return Return the result of the action. #SL_OK, #SL_ERROR, or #SL_REINIT ("unload" the game)
  */
-SaveOrLoadResult SaveOrLoad(const char *filename, SaveLoadOperation fop, DetailedFileType dft, Subdirectory sb, bool threaded)
+SaveOrLoadResult SaveOrLoad(const std::string &filename, SaveLoadOperation fop, DetailedFileType dft, Subdirectory sb, bool threaded)
+{
 	/* An instance of saving is already active, so don't go saving again */
 	if (_sl.saveinprogress && fop == SLO_SAVE && dft == DFT_GAME_FILE && threaded) {
@@ @@ -2833,7 +2833,7 @@ SaveOrLoadResult SaveOrLoad(const char * @@
+		}
 		if (fop == SLO_SAVE) { // SAVE game
 			DEBUG(desync, 1, "save: %08x; %02x; %s", _date, _date_fract, filename);
+			DEBUG(desync, 1, "save: %08x; %02x; %s", _date, _date_fract, filename.c_str());
 			if (_network_server || !_settings_client.gui.threaded_saves) threaded = false;
 			return DoSave(new FileWriter(fh), threaded);
@@ @@ -2841,7 +2841,7 @@ SaveOrLoadResult SaveOrLoad(const char * @@
 		/* LOAD game */
 		assert(fop == SLO_LOAD || fop == SLO_CHECK);
 		DEBUG(desync, 1, "load: %s", filename);
+		DEBUG(desync, 1, "load: %s", filename.c_str());
 		return DoLoad(new FileReader(fh), fop == SLO_CHECK);
 	} catch (...) {
 		/* This code may be executed both for old and new save games. */

src/saveload/saveload.h

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@@ @@ -362,7 +362,7 @@ extern FileToSaveLoad _file_to_saveload; @@
 void GenerateDefaultSaveName(char *buf, const char *last);
 void SetSaveLoadError(StringID str);
 const char *GetSaveLoadErrorString();
-SaveOrLoadResult SaveOrLoad(const char *filename, SaveLoadOperation fop, DetailedFileType dft, Subdirectory sb, bool threaded = true);
+SaveOrLoadResult SaveOrLoad(const std::string &filename, SaveLoadOperation fop, DetailedFileType dft, Subdirectory sb, bool threaded = true);
 void WaitTillSaved();
 void ProcessAsyncSaveFinish();
 void DoExitSave();

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