- Enhanced split algorithm to be non-destrutive, and therefore faster

- Added autoconf testing to detect Solaris
- Added Solaris-specific flock implementation

configure.ac

@@ -4,7 +4,6 @@
 AC_PREREQ(2.61)
 AC_INIT(task, 1.5.0, bugs@beckingham.net)
 
-
 CFLAGS="${CFLAGS=}"
 CXXFLAGS="${CXXFLAGS=}"
 # this macro is used to get the arguments supplied
@@ -25,6 +24,15 @@ CXXFLAGS="$CFLAGS -O3"
 AC_MSG_RESULT(no)
 fi
 
+# Check for OS.
+OS=`uname|sed -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
+if test "$OS" = "sunos"; then
+  AC_MSG_NOTICE([OS Solaris detected])
+  AC_DEFINE([SOLARIS], [], [Compiling on Solaris])
+else
+  AC_MSG_NOTICE([OS Non-Solaris detected])
+  AC_DEFINE([LINUX], [], [Compiling on Non-Solaris])
+fi
 
 AM_INIT_AUTOMAKE
 AC_CONFIG_SRCDIR([src/task.cpp])
@@ -58,7 +66,7 @@ AC_STRUCT_TM
 AC_FUNC_MKTIME
 AC_FUNC_SELECT_ARGTYPES
 AC_CHECK_FUNCS([select])
-AC_CHECK_FUNC(flock, [AC_DEFINE([HAVE_FLOCK], [1], [Found flock])])
+#AC_CHECK_FUNC(flock, [AC_DEFINE([HAVE_FLOCK], [1], [Found flock])])
 AC_CHECK_FUNC(uuid_unparse_lower, [AC_DEFINE([HAVE_UUID], [1], [Found uuid_unparse_lower])])
 AC_CHECK_FUNC(random, [AC_DEFINE([HAVE_RANDOM], [1], [Found random])])
 AC_CHECK_FUNC(srandom, [AC_DEFINE([HAVE_SRANDOM], [1], [Found srandom])])

src/TDB.cpp

@@ -289,11 +289,7 @@ bool TDB::modifyT (const T& t)
 ////////////////////////////////////////////////////////////////////////////////
 bool TDB::lock (FILE* file) const
 {
-#ifdef HAVE_FLOCK
   return flock (fileno (file), LOCK_EX) ? false : true;
-#else
-  return true;
-#endif
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -303,11 +299,9 @@ bool TDB::overwritePending (std::vector <T>& all)
   FILE* out;
   if ((out = fopen (mPendingFile.c_str (), "w")))
   {
-#ifdef HAVE_FLOCK
     int retry = 0;
     while (flock (fileno (out), LOCK_EX) && ++retry <= 3)
       delay (0.25);
-#endif
 
     std::vector <T>::iterator it;
     for (it = all.begin (); it != all.end (); ++it)
@@ -328,11 +322,9 @@ bool TDB::writePending (const T& t)
   FILE* out;
   if ((out = fopen (mPendingFile.c_str (), "a")))
   {
-#ifdef HAVE_FLOCK
     int retry = 0;
     while (flock (fileno (out), LOCK_EX) && ++retry <= 3)
       delay (0.25);
-#endif
 
     fputs (t.compose ().c_str (), out);
 
@@ -351,11 +343,9 @@ bool TDB::writeCompleted (const T& t)
   FILE* out;
   if ((out = fopen (mCompletedFile.c_str (), "a")))
   {
-#ifdef HAVE_FLOCK
     int retry = 0;
     while (flock (fileno (out), LOCK_EX) && ++retry <= 3)
       delay (0.25);
-#endif
 
     fputs (t.compose ().c_str (), out);
 
@@ -380,11 +370,9 @@ bool TDB::readLockedFile (
     FILE* in;
     if ((in = fopen (file.c_str (), "r")))
     {
-#ifdef HAVE_FLOCK
       int retry = 0;
       while (flock (fileno (in), LOCK_EX) && ++retry <= 3)
         delay (0.25);
-#endif
 
       char line[T_LINE_MAX];
       while (fgets (line, T_LINE_MAX, in))

src/task.h

@@ -130,6 +130,15 @@ const char* optionalBlankLine (Config&);
 int convertDuration (std::string&);
 std::string expandPath (const std::string&);
 
+#ifdef SOLARIS
+  #define LOCK_SH 1
+  #define LOCK_EX 2
+  #define LOCK_NB 4
+  #define LOCK_UN 8
+
+  int flock (int, int);
+#endif
+
 // rules.cpp
 void initializeColorRules (Config&);
 void autoColorize (T&, Text::color&, Text::color&);

src/text.cpp

@@ -49,33 +49,39 @@ void wrapText (
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-void split (std::vector<std::string>& results, const std::string& input, const char delimiter)
+void split (
+  std::vector<std::string>& results,
+  const std::string& input,
+  const char delimiter)
 {
-  std::string temp = input;
+  std::string::size_type start = 0;
   std::string::size_type i;
-  while ((i = temp.find (delimiter)) != std::string::npos)
+  while ((i = input.find (delimiter, start)) != std::string::npos)
   {
-    std::string token = temp.substr (0, i);
-    results.push_back (token);
-    temp.erase (0, i + 1);
+    results.push_back (input.substr (start, i - start));
+    start = i + 1;
   }
 
-  if (temp.length ()) results.push_back (temp);
+  results.push_back (input.substr (start, std::string::npos));
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-void split (std::vector<std::string>& results, const std::string& input, const std::string& delimiter)
+void split (
+  std::vector<std::string>& results,
+  const std::string& input,
+  const std::string& delimiter)
 {
-  std::string temp = input;
+  std::string::size_type length = delimiter.length ();
+
+  std::string::size_type start = 0;
   std::string::size_type i;
-  while ((i = temp.find (delimiter)) != std::string::npos)
+  while ((i = input.find (delimiter, start)) != std::string::npos)
   {
-    std::string token = temp.substr (0, i);
-    results.push_back (token);
-    temp.erase (0, i + delimiter.length ());
+    results.push_back (input.substr (start, i - start));
+    start = i + length;
   }
 
-  if (temp.length ()) results.push_back (temp);
+  results.push_back (input.substr (start, std::string::npos));
 }
 
 ////////////////////////////////////////////////////////////////////////////////

src/util.cpp

@@ -331,3 +331,37 @@ std::string expandPath (const std::string& in)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// On Solaris no flock function exists.
+#ifdef SOLARIS
+int flock (int fd, int operation)
+{
+  struct flock flock;
+
+  switch (operation & ~LOCK_NB)
+  {
+  case LOCK_SH:
+    flock.l_type = F_RDLCK;
+    break;
+
+  case LOCK_EX:
+    flock.l_type = F_WRLCK;
+    break;
+
+  case LOCK_UN:
+    flock.l_type = F_UNLCK;
+    break;
+
+  default:
+    errno = EINVAL;
+    return -1;
+  }
+
+  flock.l_whence = 0;
+  flock.l_start  = 0;
+  flock.l_len    = 0;
+
+  return fcntl (fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
+}
+#endif
+
+////////////////////////////////////////////////////////////////////////////////