lib: use join_paths

Convert some manual concatenation to the new join_paths helper.

lib/index/mu-scanner.cc

@@ -33,6 +33,7 @@
 #include <glib.h>
 
 #include "utils/mu-utils.hh"
+#include "utils/mu-utils-file.hh"
 #include "utils/mu-error.hh"
 
 using namespace Mu;
@@ -44,10 +45,7 @@ struct Scanner::Private {
 		if (!handler_)
 			throw Mu::Error{Error::Code::Internal, "missing handler"};
 	}
-	~Private()
-	{
-		stop();
-	}
+	~Private() { stop(); }
 
 	bool start();
 	bool stop();
@@ -67,9 +65,6 @@ is_dotdir(const char *d_name)
 	if (d_name[0] == '\0' || (d_name[1] == '\0' && d_name[0] == '.') ||
 	    (d_name[2] == '\0' && d_name[0] == '.' && d_name[1] == '.'))
 		return true;
-	/* gnus? */
-	if (d_name[0] == '.' && g_strcmp0(d_name + 1, "nnmaildir") == 0)
-		return true;
 
 	return false;
 }
@@ -97,7 +92,7 @@ Scanner::Private::process_dentry(const std::string& path, struct dirent *dentry,
 		return true; // ignore
 	}
 
-	const auto  fullpath{path + "/" + d_name};
+	const auto  fullpath{join_paths(path, d_name)};
 	struct stat statbuf {};
 	if (::stat(fullpath.c_str(), &statbuf) != 0) {
 		g_warning("failed to stat %s: %s", fullpath.c_str(), g_strerror(errno));

lib/message/mu-message-file.cc

@@ -73,7 +73,7 @@ Mu::message_file_parts(const std::string& file)
 Mu::Result<DirFile>
 Mu::base_message_dir_file(const std::string& path)
 {
-	constexpr auto newdir{ G_DIR_SEPARATOR_S "new"};
+	constexpr auto newdir{"/new"};
 
 	char *dirname{g_path_get_dirname(path.c_str())};
 	bool is_new{!!g_str_has_suffix(dirname, newdir)};

lib/mu-maildir.cc

@@ -74,7 +74,7 @@ create_maildir(const std::string& path, mode_t mode)
 	std::array<std::string,3> subdirs = {"new", "cur", "tmp"};
 	for (auto&& subdir: subdirs) {
 
-		const auto fullpath{path + G_DIR_SEPARATOR_S + subdir};
+		const auto fullpath{join_paths(path, subdir)};
 
 		/* if subdir already exists, don't try to re-create
 		 * it */
@@ -98,7 +98,7 @@ create_maildir(const std::string& path, mode_t mode)
 static Mu::Result<void>		/* create a noindex file if requested */
 create_noindex(const std::string& path)
 {
-	const auto noindexpath{path + G_DIR_SEPARATOR_S MU_MAILDIR_NOINDEX_FILE};
+	const auto noindexpath{join_paths(path, MU_MAILDIR_NOINDEX_FILE)};
 
 	/* note, if the 'close' failed, creation may still have succeeded...*/
 	int fd = ::creat(noindexpath.c_str(), 0644);
@@ -163,18 +163,15 @@ get_target_fullpath(const std::string& src, const std::string& targetpath,
 	 */
 	std::string fulltargetpath;
 	if (unique_names)
-		fulltargetpath = format("%s%c%s%c%u_%s",
-				    targetpath.c_str(),
-				    G_DIR_SEPARATOR, in_cur ? "cur" : "new",
-				    G_DIR_SEPARATOR,
-				    g_str_hash(src.c_str()),
-				    srcfile);
+		fulltargetpath = join_paths(targetpath,
+					    in_cur ? "cur" : "new",
+					    format("%u_%s",
+						   g_str_hash(src.c_str()),
+						   srcfile));
 	else
-		fulltargetpath = format("%s%c%s%c%s",
-				    targetpath.c_str(),
-				    G_DIR_SEPARATOR, in_cur ? "cur" : "new",
-				    G_DIR_SEPARATOR,
-				    srcfile);
+		fulltargetpath = join_paths(targetpath,
+					    in_cur ? "cur" : "new",
+					    srcfile);
 	g_free(srcfile);
 
 	return fulltargetpath;
@@ -213,8 +210,7 @@ clear_links(const std::string& path, DIR* dir)
 		if (dentry->d_name[0] == '.')
 			continue; /* ignore .,.. other dotdirs */
 
-		const auto fullpath{
-			format("%s" G_DIR_SEPARATOR_S "%s",path.c_str(), dentry->d_name)};
+		const auto fullpath{join_paths(path, dentry->d_name)};
 		const auto d_type   = get_dtype(dentry, fullpath.c_str(), true/*lstat*/);
 		switch(d_type) {
 		case DT_LNK:
@@ -441,8 +437,8 @@ Mu::maildir_determine_target(const std::string&	old_path,
 
 	/* if target_mdir is empty, the src_dir does not change (though cur/
 	 * maybe become new or vice-versa) */
-	const auto dst_mdir{target_maildir.empty() ? src_mdir :
-		root_maildir_path + target_maildir};
+	const auto dst_mdir = target_maildir.empty() ? src_mdir :
+		join_paths(root_maildir_path,  target_maildir);
 
 	/* now calculate the message name (incl. its immediate parent dir) */
 	const auto dst_file{determine_dst_filename(src_file, newflags, new_name)};
@@ -455,5 +451,5 @@ Mu::maildir_determine_target(const std::string&	old_path,
 			return "new";
 	});
 
-	return dst_mdir + G_DIR_SEPARATOR_S + subdir + G_DIR_SEPARATOR_S + dst_file;
+	return join_paths(dst_mdir, subdir,dst_file);
 }

lib/utils/mu-utils-file.cc

@@ -153,11 +153,9 @@ Mu::runtime_path(Mu::RuntimePath path, const std::string& muhome)
 {
 	auto [mu_cache, mu_config] =
 		std::invoke([&]()->std::pair<std::string, std::string> {
-
-			static std::string mu{"/mu"};
 			if (muhome.empty())
-				return { g_get_user_cache_dir() + mu,
-					 g_get_user_config_dir() + mu };
+				return { join_paths(g_get_user_cache_dir(), "mu"),
+					 join_paths(g_get_user_config_dir(), "mu")};
 			else
 				return { muhome, muhome };
 	});
@@ -166,15 +164,15 @@ Mu::runtime_path(Mu::RuntimePath path, const std::string& muhome)
 	case Mu::RuntimePath::Cache:
 		return mu_cache;
 	case Mu::RuntimePath::XapianDb:
-		return mu_cache + "/xapian";
+		return join_paths(mu_cache, "xapian");
 	case Mu::RuntimePath::LogFile:
-		return mu_cache + "/mu.log";
+		return join_paths(mu_cache, "mu.log");
 	case Mu::RuntimePath::Bookmarks:
-		return mu_config + "/bookmarks";
+		return join_paths(mu_config, "bookmarks");
 	case Mu::RuntimePath::Config:
 		return mu_config;
 	case Mu::RuntimePath::Scripts:
-		return mu_config + "/scripts";
+		return join_paths(mu_config, "scripts");
 	default:
 		throw std::logic_error("unknown path");
 	}