better tmp dir selection

src/pfaedle/Def.h

@@ -6,7 +6,9 @@
 #define PFAEDLE_DEF_H_
 
 #include <unistd.h>
+#include <string>
 #include "util/log/Log.h"
+#include "util/Misc.h"
 #include "util/geo/Geo.h"
 #include "util/geo/PolyLine.h"
 
@@ -34,6 +36,7 @@ namespace pfaedle {
 // _____________________________________________________________________________
 inline std::string getTmpFName(std::string dir, std::string postf) {
   if (postf.size()) postf = "-" + postf;
+  if (!dir.size()) dir = util::getTmpDir();
   if (dir.size() && dir.back() != '/') dir = dir + "/";
 
   std::string f = dir + ".pfaedle-tmp" + postf;
@@ -55,6 +58,6 @@ inline std::string getTmpFName(std::string dir, std::string postf) {
   return f;
 }
 
-}
+}  // namespace pfaedle
 
 #endif  // PFAEDLE_DEF_H_

src/pfaedle/PfaedleMain.cpp

@@ -30,6 +30,29 @@
 #include "util/geo/output/GeoJsonOutput.h"
 #include "util/json/Writer.h"
 #include "util/log/Log.h"
+#include "util/Misc.h"
+
+#ifndef HOME_VAR
+#define HOME_VAR "HOME"
+#endif
+#ifndef XDG_DATA_HOME_SUFFIX
+#define XDG_DATA_HOME_SUFFIX "/.local/share"
+#endif
+#ifndef XDG_CONFIG_HOME_SUFFIX
+#define XDG_CONFIG_HOME_SUFFIX "/.config"
+#endif
+#ifndef XDG_CACHE_HOME_SUFFIX
+#define XDG_CACHE_HOME_SUFFIX "/.cache"
+#endif
+#ifndef XDG_DATA_DIRS_DEFAULT
+#define XDG_DATA_DIRS_DEFAULT "/usr/local/share"
+#endif
+#ifndef XDG_CONFIG_DIRS_DEFAULT
+#define XDG_CONFIG_DIRS_DEFAULT "/etc"
+#endif
+#ifndef CFG_FILE_NAME
+#define CFG_FILE_NAME "pfaedle.cfg"
+#endif
 
 using pfaedle::router::MOTs;
 using pfaedle::osm::BBoxIdx;
@@ -316,25 +339,6 @@ std::vector<std::string> getCfgPaths(const Config& cfg) {
   if (cfg.configPaths.size()) return cfg.configPaths;
   std::vector<std::string> ret;
 
-  // parse implicit paths
-  const char* homedir = 0;
-  char* buf = 0;
-
-  if ((homedir = getenv("HOME")) == 0) {
-    homedir = "";
-    struct passwd pwd;
-    struct passwd* result;
-    size_t bufsize;
-    bufsize = sysconf(_SC_GETPW_R_SIZE_MAX);
-    if (bufsize == static_cast<size_t>(-1)) bufsize = 0x4000;
-    buf = static_cast<char*>(malloc(bufsize));
-    if (buf != 0) {
-      getpwuid_r(getuid(), &pwd, buf, bufsize, &result);
-      if (result != NULL) homedir = result->pw_dir;
-    }
-  }
-
-  if (buf) free(buf);
 
   // install prefix global configuration path, if available
   {
@@ -352,7 +356,7 @@ std::vector<std::string> getCfgPaths(const Config& cfg) {
 
   // local user configuration path, if available
   {
-    auto path = std::string(homedir) + XDG_CONFIG_HOME_SUFFIX + "/" +
+    auto path = util::getHomeDir() + XDG_CONFIG_HOME_SUFFIX + "/" +
                 "pfaedle" + "/" + CFG_FILE_NAME;
     std::ifstream is(path);
 
@@ -363,6 +367,8 @@ std::vector<std::string> getCfgPaths(const Config& cfg) {
     }
   }
 
+  // free this here, as we use homedir in the block above
+
   // CWD
   {
     char cwd[PATH_MAX];

src/pfaedle/config/MotConfigReader.h

@@ -5,36 +5,13 @@
 #ifndef PFAEDLE_CONFIG_MOTCONFIGREADER_H_
 #define PFAEDLE_CONFIG_MOTCONFIGREADER_H_
 
-#include "pfaedle/_config.h"
-
-#ifndef HOME_VAR
-#define HOME_VAR "HOME"
-#endif
-#ifndef XDG_DATA_HOME_SUFFIX
-#define XDG_DATA_HOME_SUFFIX "/.local/share"
-#endif
-#ifndef XDG_CONFIG_HOME_SUFFIX
-#define XDG_CONFIG_HOME_SUFFIX "/.config"
-#endif
-#ifndef XDG_CACHE_HOME_SUFFIX
-#define XDG_CACHE_HOME_SUFFIX "/.cache"
-#endif
-#ifndef XDG_DATA_DIRS_DEFAULT
-#define XDG_DATA_DIRS_DEFAULT "/usr/local/share"
-#endif
-#ifndef XDG_CONFIG_DIRS_DEFAULT
-#define XDG_CONFIG_DIRS_DEFAULT "/etc"
-#endif
-#ifndef CFG_FILE_NAME
-#define CFG_FILE_NAME "pfaedle.cfg"
-#endif
-
-#include <unordered_map>
-#include <vector>
 #include <set>
 #include <string>
+#include <unordered_map>
+#include <vector>
 #include "ad/cppgtfs/gtfs/Route.h"
 #include "configparser/ConfigFileParser.h"
+#include "pfaedle/_config.h"
 #include "pfaedle/config/MotConfig.h"
 #include "pfaedle/osm/OsmBuilder.h"
 

src/pfaedle/gtfs/ShapeContainer.h

@@ -11,7 +11,6 @@
 #include <set>
 #include <sstream>
 #include <string>
-#include <string>
 #include "ad/cppgtfs/gtfs/Shape.h"
 #include "ad/cppgtfs/gtfs/flat/Shape.h"
 #include "pfaedle/Def.h"

src/pfaedle/gtfs/ShapeContainer.tpp

@@ -2,6 +2,8 @@
 // Chair of Algorithms and Data Structures.
 // Authors: Patrick Brosi <brosi@informatik.uni-freiburg.de>
 
+#include <string>
+
 // ____________________________________________________________________________
 template <typename T>
 ShapeContainer<T>::ShapeContainer() {

src/pfaedle/osm/OsmIdSet.cpp

@@ -271,15 +271,14 @@ uint32_t OsmIdSet::hash(uint32_t in, int i) const {
 
 // _____________________________________________________________________________
 int OsmIdSet::openTmpFile() const {
-  const std::string& fname = getTmpFName(_tmpPath, "");
+  const std::string& fname = getTmpFName("", "");
   int file = open(fname.c_str(), O_RDWR | O_CREAT, 0666);
 
   // immediately unlink
   unlink(fname.c_str());
 
   if (file < 0) {
-    std::cerr << "Could not open temporary file " << fname
+    std::cerr << "Could not open temporary file " << fname << std::endl;
-              << std::endl;
     exit(1);
   }
 

src/pfaedle/osm/OsmIdSet.h

@@ -34,7 +34,6 @@ static const size_t OBUFFER_S = 8 * 1024 * 1024;
 class OsmIdSet {
  public:
   OsmIdSet();
-  OsmIdSet(const std::string& tmpPath) : _tmpPath(tmpPath) {};
   ~OsmIdSet();
 
   // Add an OSM id

src/util/Misc.h

@@ -6,8 +6,12 @@
 #define UTIL_MISC_H_
 
 #include <cmath>
+#include <cstring>
 #include <chrono>
 #include <sstream>
+#include <unistd.h>
+#include <sys/types.h>
+#include <pwd.h>
 
 #define UNUSED(expr) do { (void)(expr); } while (0)
 #define TIME() std::chrono::high_resolution_clock::now()
@@ -85,6 +89,48 @@ inline double atof(const char* p, uint8_t mn) {
 // _____________________________________________________________________________
 inline double atof(const char* p) { return atof(p, 38); }
 
+// _____________________________________________________________________________
+inline std::string getHomeDir() {
+  // parse implicit paths
+  const char* homedir = 0;
+  char* buf = 0;
+
+  if ((homedir = getenv("HOME")) == 0) {
+    homedir = "";
+    struct passwd pwd;
+    struct passwd* result;
+    size_t bufsize;
+    bufsize = sysconf(_SC_GETPW_R_SIZE_MAX);
+    if (bufsize == static_cast<size_t>(-1)) bufsize = 0x4000;
+    buf = static_cast<char*>(malloc(bufsize));
+    if (buf != 0) {
+      getpwuid_r(getuid(), &pwd, buf, bufsize, &result);
+      if (result != NULL) homedir = result->pw_dir;
+    }
+  }
+
+  std::string ret(homedir);
+  if (buf) free(buf);
+
+  return ret;
+}
+
+// _____________________________________________________________________________
+inline std::string getTmpDir() {
+  // first, check if an env variable is set
+  const char* tmpdir = getenv("TMPDIR");
+  if (std::strlen(tmpdir)) return std::string(tmpdir);
+
+  // second, check if /tmp is writable
+  if (access("/tmp/", W_OK) == 0) return "/tmp";
+
+  // third, check if the cwd is writable
+  if (access(".", W_OK) == 0)  return ".";
+
+  // lastly, return the users home directory as a fallback
+  return getHomeDir();
+}
+
 }  // namespace util
 
 #endif  // UTIL_MISC_H_