- Changed FindReadline.cmake to search for Readline in macports paths before system paths. - Fixed CTRL-D. Now it exits tasksh. - Fixed a crash when a task description had any special characters.

cmake/Modules/FindReadline.cmake

@@ -1,8 +1,80 @@
-# GNU Readline library finder
+# - Find the readline library
-if (READLINE_INCLUDE_DIR AND READLINE_LIBRARIES)
+# This module defines
-  set (READLINE_FOUND TRUE)
+#  READLINE_INCLUDE_DIR, path to readline/readline.h, etc.
-else (READLINE_INCLUDE_DIR AND READLINE_LIBRARIES)
+#  READLINE_LIBRARIES, the libraries required to use READLINE.
-  find_path (READLINE_INCLUDE_DIR readline/readline.h)
+#  READLINE_FOUND, If false, do not try to use READLINE.
-  find_library (READLINE_LIBRARIES readline)
+# also defined, but not for general use are
-  mark_as_advanced (READLINE_INCLUDE_DIR READLINE_LIBRARIES)
+# READLINE_readline_LIBRARY, where to find the READLINE library.
-endif (READLINE_INCLUDE_DIR AND READLINE_LIBRARIES)
+# READLINE_ncurses_LIBRARY, where to find the ncurses library [might not be defined]
+
+# Apple readline does not support readline hooks
+# So we look for another one by default
+IF (APPLE)
+  FIND_PATH (READLINE_INCLUDE_DIR NAMES readline/readline.h PATHS
+    /sw/include
+    /opt/local/include
+    /opt/include
+    /usr/local/include
+    /usr/include/
+    NO_DEFAULT_PATH
+    )
+ENDIF (APPLE)
+FIND_PATH (READLINE_INCLUDE_DIR NAMES readline/readline.h)
+
+
+# Apple readline does not support readline hooks
+# So we look for another one by default
+IF (APPLE)
+  FIND_LIBRARY (READLINE_readline_LIBRARY NAMES readline PATHS
+    /sw/lib
+    /opt/local/lib
+    /opt/lib
+    /usr/local/lib
+    /usr/lib
+    NO_DEFAULT_PATH
+    )
+ENDIF (APPLE)
+FIND_LIBRARY (READLINE_readline_LIBRARY NAMES readline)
+
+# Sometimes readline really needs ncurses
+IF (APPLE)
+  FIND_LIBRARY (READLINE_ncurses_LIBRARY NAMES ncurses PATHS
+    /sw/lib
+    /opt/local/lib
+    /opt/lib
+    /usr/local/lib
+    /usr/lib
+    NO_DEFAULT_PATH
+    )
+ENDIF (APPLE)
+FIND_LIBRARY (READLINE_ncurses_LIBRARY NAMES ncurses)
+
+MARK_AS_ADVANCED (
+  READLINE_INCLUDE_DIR
+  READLINE_readline_LIBRARY
+  READLINE_ncurses_LIBRARY
+  )
+
+SET (READLINE_FOUND "NO" )
+IF (READLINE_INCLUDE_DIR)
+  IF (READLINE_readline_LIBRARY)
+    SET (READLINE_FOUND "YES" )
+    SET (READLINE_LIBRARIES
+      ${READLINE_readline_LIBRARY} 
+      )
+
+    # some readline libraries depend on ncurses
+    IF (READLINE_ncurses_LIBRARY)
+      SET (READLINE_LIBRARIES ${READLINE_LIBRARIES} ${READLINE_ncurses_LIBRARY})
+    ENDIF (READLINE_ncurses_LIBRARY)
+
+  ENDIF (READLINE_readline_LIBRARY)
+ENDIF (READLINE_INCLUDE_DIR)
+
+IF (READLINE_FOUND)
+  MESSAGE (STATUS "Found readline library")
+ELSE (READLINE_FOUND)
+  IF (READLINE_FIND_REQUIRED)
+    MESSAGE (FATAL_ERROR "Could not find readline -- please give some paths to CMake")
+  ENDIF (READLINE_FIND_REQUIRED)
+ENDIF (READLINE_FOUND)

src/shell/Readline.cpp

@@ -44,6 +44,11 @@ std::string Readline::gets (const std::string& prompt)
 #ifdef HAVE_READLINE
   // Get a line from the user.
   char *line_read = readline (prompt.c_str ());
+  if (!line_read) // Exit when CTRL-D is pressed
+  {
+    std::cout << "exit\n";
+    return "exit";
+  }
 #else
   std::string line_read;
   std::cout << prompt;
@@ -52,11 +57,11 @@ std::string Readline::gets (const std::string& prompt)
 
 #ifdef HAVE_READLINE
   // If the line has any text in it, save it on the history.
-  if (line_read && *line_read)
+  if (*line_read)
     add_history (line_read);
 #endif
 
-  std::string ret (line_read);
+  std::string ret(line_read);
 
 #ifdef HAVE_READLINE
   free (line_read);
@@ -66,7 +71,7 @@ std::string Readline::gets (const std::string& prompt)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-bool Readline::interactive_mode (const std::istream& in)
+bool Readline::interactiveMode (const std::istream& in)
 {
   return (&in == &std::cin && isatty (0) == 1);
 }
@@ -74,7 +79,9 @@ bool Readline::interactive_mode (const std::istream& in)
 ////////////////////////////////////////////////////////////////////////////////
 Wordexp::Wordexp (const std::string &str)
 {
-  wordexp (str.c_str (), &_p, 0);
+  std::string tmpStr(str);
+  escapeSpecialChars(tmpStr);
+  wordexp (tmpStr.c_str (), &_p, 0);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -96,3 +103,20 @@ char** Wordexp::argv ()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+char* Wordexp::argv (int i)
+{
+  return _p.we_wordv[i];
+}
+
+////////////////////////////////////////////////////////////////////////////////
+void Wordexp::escapeSpecialChars(std::string& str)
+{
+  size_t i = 0;
+  while ((i = str.find_first_of ("$*?!|&;<>(){}~#@", i)) != std::string::npos)
+  {
+    str.insert(i, 1, '\\');
+    i += 2;
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////////

src/shell/Readline.h

@@ -38,7 +38,7 @@ class Readline
 {
 public:
   static std::string gets (const std::string& prompt);
-  static bool interactive_mode (const std::istream& in);
+  static bool interactiveMode (const std::istream& in);
 
 private:
   // No construction or destruction.
@@ -52,11 +52,14 @@ private:
 class Wordexp
 {
 public:
-  Wordexp (const std::string &str);
+  Wordexp (const std::string& str);
   ~Wordexp ();
 
   int argc ();
   char** argv ();
+  char* argv (int i);
+
+  void escapeSpecialChars(std::string& str);
 
 private:
   wordexp_t _p;

src/shell/main.cpp

@@ -31,7 +31,6 @@
 #include <fstream>
 #include <iostream>
 #include <cstring>
-#include <stdlib.h>
 
 #ifdef CYGWIN
 #include <time.h>
@@ -115,8 +114,8 @@ int main (int argc, const char** argv)
 
   std::cout << (context.color () ? bold.colorize (PACKAGE_STRING) : PACKAGE_STRING)
             << " shell\n\n"
-            << STRING_CMD_SHELL_HELP1 << "\n"
+            << STRING_CMD_SHELL_HELP1 << '\n'
-            << STRING_CMD_SHELL_HELP2 << "\n"
+            << STRING_CMD_SHELL_HELP2 << '\n'
             << STRING_CMD_SHELL_HELP3 << "\n\n";
 
   // Make a copy because context.clear will delete them.
@@ -147,9 +146,13 @@ int main (int argc, const char** argv)
     std::string prompt (context.config.get ("shell.prompt") + " ");
     context.clear ();
 
-    if (Readline::interactive_mode (in))
+    if (Readline::interactiveMode (in))
     {
       input = Readline::gets (prompt);
+
+      // if a string has nothing but whitespaces, ignore it
+      if (input.find_first_not_of (" \t") == std::string::npos)
+        continue;
     }
     else
     {
@@ -159,7 +162,7 @@ int main (int argc, const char** argv)
       if (input.find_first_not_of (" \t") == std::string::npos)
         continue;
 
-      std::cout << prompt << input << "\n";
+      std::cout << prompt << input << '\n';
     }
 
     try
@@ -169,7 +172,7 @@ int main (int argc, const char** argv)
       for (int i = 0; i < w.argc (); ++i)
       {
         if (std::find (quit_commands.begin (), quit_commands.end (),
-                       lowerCase (w.argv ()[i])) != quit_commands.end ())
+                       lowerCase (w.argv (i))) != quit_commands.end ())
         {
           context.clearMessages ();
           return 0;
@@ -183,13 +186,13 @@ int main (int argc, const char** argv)
 
     catch (const std::string& error)
     {
-      std::cerr << error << "\n";
+      std::cerr << error << '\n';
       return -1;
     }
 
     catch (...)
     {
-      std::cerr << STRING_UNKNOWN_ERROR << "\n";
+      std::cerr << STRING_UNKNOWN_ERROR << '\n';
       return -2;
     }
   }