remove direct of realpath(2), replace with canonical_path() which is a no-op on windows

gtk2_ardour/main.cc

@@ -31,6 +31,7 @@
 #include "pbd/file_utils.h"
 #include "pbd/textreceiver.h"
 #include "pbd/failed_constructor.h"
+#include "pbd/pathexpand.h"
 #include "pbd/pthread_utils.h"
 #ifdef BOOST_SP_ENABLE_DEBUG_HOOKS
 #include "pbd/boost_debug.h"
@@ -277,7 +278,7 @@ fixup_bundle_environment (int /*argc*/, char* argv[])
 		lpath.push_back (dir_path);
 		lpath.push_back ("share");
 		lpath.push_back ("locale");
-		localedir = realpath (Glib::build_filename (lpath).c_str(), NULL);
+		localedir = canonical_path (Glib::build_filename (lpath)).c_str();
 	}
 #endif
 

libs/ardour/find_session.cc

@@ -27,6 +27,7 @@
 #include <glibmm/miscutils.h>
 
 #include "pbd/compose.h"
+#include "pbd/pathexpand.h"
 #include "pbd/error.h"
 
 #include "ardour/filename_extensions.h"
@@ -43,16 +44,10 @@ int
 find_session (string str, string& path, string& snapshot, bool& isnew)
 {
 	struct stat statbuf;
-	char buf[PATH_MAX+1];
 
 	isnew = false;
 
-	if (!realpath (str.c_str(), buf) && (errno != ENOENT && errno != ENOTDIR)) {
-		error << string_compose (_("Could not resolve path: %1 (%2)"), buf, strerror(errno)) << endmsg;
-		return -1;
-	}
-
-	str = buf;
+	str = canonical_path (str);
 
 	/* check to see if it exists, and what it is */
 

libs/ardour/session_state.cc

@@ -64,6 +64,7 @@
 #include "pbd/enumwriter.h"
 #include "pbd/error.h"
 #include "pbd/file_utils.h"
+#include "pbd/pathexpand.h"
 #include "pbd/pathscanner.h"
 #include "pbd/pthread_utils.h"
 #include "pbd/stacktrace.h"
@@ -128,14 +129,7 @@ Session::first_stage_init (string fullpath, string snapshot_name)
 		throw failed_constructor();
 	}
 
-	char buf[PATH_MAX+1];
-	if (!realpath (fullpath.c_str(), buf) && (errno != ENOENT)) {
-		error << string_compose(_("Could not use path %1 (%2)"), buf, strerror(errno)) << endmsg;
-		destroy ();
-		throw failed_constructor();
-	}
-
-	_path = string(buf);
+	_path = canonical_path (fullpath);
 
 	if (_path[_path.length()-1] != G_DIR_SEPARATOR) {
 		_path += G_DIR_SEPARATOR;
@@ -2664,6 +2658,8 @@ Session::cleanup_sources (CleanupReport& rep)
 	bool used;
 	string spath;
 	int ret = -1;
+	string tmppath1;
+	string tmppath2;
 
 	_state_of_the_state = (StateOfTheState) (_state_of_the_state | InCleanup);
 
@@ -2788,9 +2784,6 @@ Session::cleanup_sources (CleanupReport& rep)
                 i = tmp;
 	}
 
-	char tmppath1[PATH_MAX+1];
-	char tmppath2[PATH_MAX+1];
-
         if (candidates) {
                 for (vector<string*>::iterator x = candidates->begin(); x != candidates->end(); ++x) {
 
@@ -2799,19 +2792,10 @@ Session::cleanup_sources (CleanupReport& rep)
 
                         for (set<string>::iterator i = all_sources.begin(); i != all_sources.end(); ++i) {
 
-                                if (realpath(spath.c_str(), tmppath1) == 0) {
-                                        error << string_compose (_("Cannot expand path %1 (%2)"),
-                                                                 spath, strerror (errno)) << endmsg;
-                                        continue;
-                                }
+				tmppath1 = canonical_path (spath);
+				tmppath2 = canonical_path ((*i));
 
-                                if (realpath((*i).c_str(),  tmppath2) == 0) {
-                                        error << string_compose (_("Cannot expand path %1 (%2)"),
-                                                                 (*i), strerror (errno)) << endmsg;
-                                        continue;
-                                }
-
-                                if (strcmp(tmppath1, tmppath2) == 0) {
+				if (tmppath1 == tmppath2) {
                                         used = true;
                                         break;
                                 }

libs/pbd/pathexpand.cc

@@ -18,8 +18,10 @@
 */
 
 #include <vector>
-#include <climits>
 #include <iostream>
+#include <climits>
+#include <cerrno>
+#include <cstdlib>
 
 #include <regex.h>
 
@@ -31,6 +33,21 @@
 using std::string;
 using std::vector;
 
+string
+PBD::canonical_path (const std::string& path)
+{
+#ifdef WIN32
+	return path;
+#endif
+	char buf[PATH_MAX+1];
+
+	if (!realpath (path.c_str(), buf) && (errno != ENOENT)) {
+		return path;
+	}
+
+	return string (buf);
+}
+
 string
 PBD::path_expand (string path)
 {
@@ -97,13 +114,7 @@ PBD::path_expand (string path)
 
 	/* canonicalize */
 
-	char buf[PATH_MAX+1];
-
-	if (realpath (path.c_str(), buf)) {
-		return buf;
-	} else {
-		return string();
-	}
+	return canonical_path (path);
 }
 
 string

libs/pbd/pbd/pathexpand.h

@@ -22,6 +22,7 @@
 #include <string>
 
 namespace PBD {
+	std::string canonical_path (const std::string& path);
 	std::string path_expand (std::string path);
 	std::string search_path_expand (std::string path);
 }