Add some basic JSON stuff.

[dcpomatic.git] / src / lib / util.cc

diff --git a/src/lib/util.cc b/src/lib/util.cc
index ddc0a297459cef504b49300b25f874752ec2ba64..a86033e572f7655f5ebc67e5195e04018c4aa358 100644 (file)
--- a/src/lib/util.cc
+++ b/src/lib/util.cc
@@ -27,6 +27,7 @@
 #include <iostream>
 #include <fstream>
 #include <climits>
+#include <stdexcept>
 #ifdef DCPOMATIC_POSIX
 #include <execinfo.h>
 #include <cxxabi.h>
@@ -88,11 +89,14 @@ using std::min;
 using std::max;
 using std::list;
 using std::multimap;
+using std::map;
 using std::istream;
 using std::numeric_limits;
 using std::pair;
 using std::cout;
+using std::bad_alloc;
 using std::streampos;
+using std::set_terminate;
 using boost::shared_ptr;
 using boost::thread;
 using boost::lexical_cast;
@@ -271,6 +275,33 @@ LONG WINAPI exception_handler(struct _EXCEPTION_POINTERS *)
 }
 #endif
 
+/* From http://stackoverflow.com/questions/2443135/how-do-i-find-where-an-exception-was-thrown-in-c */
+void
+terminate ()
+{
+       static bool tried_throw = false;
+
+       try {
+               // try once to re-throw currently active exception
+               if (!tried_throw++) {
+                       throw;
+               }
+       }
+       catch (const std::exception &e) {
+               std::cerr << __FUNCTION__ << " caught unhandled exception. what(): "
+                         << e.what() << std::endl;
+       }
+       catch (...) {
+               std::cerr << __FUNCTION__ << " caught unknown/unhandled exception." 
+                         << std::endl;
+       }
+
+#ifdef DCPOMATIC_POSIX
+       stacktrace (cout, 50);
+#endif
+       abort();
+}
+
 /** Call the required functions to set up DCP-o-matic's static arrays, etc.
  *  Must be called from the UI thread, if there is one.
  */
@@ -307,7 +338,9 @@ dcpomatic_setup ()
        boost::filesystem::path lib = app_contents ();
        lib /= "lib";
        setenv ("LTDL_LIBRARY_PATH", lib.c_str (), 1);
-#endif 
+#endif
+
+       set_terminate (terminate);
 
        libdcp::init ();
        
@@ -350,6 +383,8 @@ dcpomatic_setup_gettext_i18n (string lang)
                putenv (cmd);
                snprintf (cmd, sizeof(cmd), "LANG=%s", lang.c_str ());
                putenv (cmd);
+               snprintf (cmd, sizeof(cmd), "LC_ALL=%s", lang.c_str ());
+               putenv (cmd);
        }
 
        setlocale (LC_ALL, "");
@@ -539,7 +574,7 @@ Socket::connect (boost::asio::ip::tcp::endpoint endpoint)
        } while (ec == boost::asio::error::would_block);
 
        if (ec) {
-               throw NetworkError (ec.message ());
+               throw NetworkError (String::compose (_("error during async_connect (%1)"), ec.value ()));
        }
 
        if (!_socket.is_open ()) {
@@ -563,7 +598,7 @@ Socket::accept (int port)
        _acceptor = 0;
        
        if (ec) {
-               throw NetworkError (ec.message ());
+               throw NetworkError (String::compose (_("error during async_accept (%1)"), ec.value ()));
        }
 }
 
@@ -584,7 +619,7 @@ Socket::write (uint8_t const * data, int size)
        } while (ec == boost::asio::error::would_block);
 
        if (ec) {
-               throw NetworkError (ec.message ());
+               throw NetworkError (String::compose (_("error during async_write (%1)"), ec.value ()));
        }
 }
 
@@ -612,7 +647,7 @@ Socket::read (uint8_t* data, int size)
        } while (ec == boost::asio::error::would_block);
        
        if (ec) {
-               throw NetworkError (ec.message ());
+               throw NetworkError (String::compose (_("error during async_read (%1)"), ec.value ()));
        }
 }
 
@@ -905,6 +940,52 @@ make_signer ()
        return shared_ptr<const libdcp::Signer> (new libdcp::Signer (chain, signer_key));
 }
 
+map<string, string>
+split_get_request (string url)
+{
+       enum {
+               AWAITING_QUESTION_MARK,
+               KEY,
+               VALUE
+       } state = AWAITING_QUESTION_MARK;
+       
+       map<string, string> r;
+       string k;
+       string v;
+       for (size_t i = 0; i < url.length(); ++i) {
+               switch (state) {
+               case AWAITING_QUESTION_MARK:
+                       if (url[i] == '?') {
+                               state = KEY;
+                       }
+                       break;
+               case KEY:
+                       if (url[i] == '=') {
+                               v.clear ();
+                               state = VALUE;
+                       } else {
+                               k += url[i];
+                       }
+                       break;
+               case VALUE:
+                       if (url[i] == '&') {
+                               r.insert (make_pair (k, v));
+                               k.clear ();
+                               state = KEY;
+                       } else {
+                               v += url[i];
+                       }
+                       break;
+               }
+       }
+
+       if (state == VALUE) {
+               r.insert (make_pair (k, v));
+       }
+
+       return r;
+}
+
 libdcp::Size
 fit_ratio_within (float ratio, libdcp::Size full_frame)
 {
@@ -914,3 +995,21 @@ fit_ratio_within (float ratio, libdcp::Size full_frame)
        
        return libdcp::Size (full_frame.width, rint (full_frame.width / ratio));
 }
+
+void *
+wrapped_av_malloc (size_t s)
+{
+       void* p = av_malloc (s);
+       if (!p) {
+               throw bad_alloc ();
+       }
+       return p;
+}
+               
+string
+entities_to_text (string e)
+{
+       boost::algorithm::replace_all (e, "%3A", ":");
+       boost::algorithm::replace_all (e, "%2F", "/");
+       return e;
+}