Add quote style information to languages

[lyx.git] / src / support / lyxtime.cpp

diff --git a/src/support/lyxtime.cpp b/src/support/lyxtime.cpp
index b24e19e91793f146fcfb55c9642d770de3dc884a..c302531e2e0b0eb2104450bd24958d3a146ffef8 100644 (file)
--- a/src/support/lyxtime.cpp
+++ b/src/support/lyxtime.cpp
@@ -12,17 +12,26 @@
 
 #include "support/lyxtime.h"
 
-using std::string;
+#include "support/debug.h"
+#include "support/environment.h"
+#include "support/lstrings.h"
+#include "support/qstring_helpers.h"
+
+#include <QDateTime>
+#include <QLocale>
+
+using namespace std;
 
 namespace lyx {
+namespace support {
 
-time_type current_time()
+time_t current_time()
 {
        return time(0);
 }
 
 
-string const formatted_time(time_type t, string const & fmt)
+string const formatted_time(time_t t, string const & fmt)
 {
        struct tm * loc_tm = localtime(&t);
        char date[50];
@@ -30,4 +39,63 @@ string const formatted_time(time_type t, string const & fmt)
        return string(date);
 }
 
+
+time_t from_ctime(string t)
+{
+       // Example for the format: "Sun Nov  6 10:39:39 2011\n"
+       // Generously remove trailing '\n' (and other whitespace if needed)
+       t = trim(t, " \t\r\n");
+#if QT_VERSION >= 0x040400
+       // toDateTime() is too stupid to recognize variable amounts of
+       // whitespace (needed because ctime() outputs double spaces before
+       // single digit day numbers and hours)
+       t = subst(t, "  ", " ");
+       QString const format("ddd MMM d H:mm:ss yyyy");
+       QLocale loc("C");
+       QDateTime loc_dt = loc.toDateTime(toqstr(t), format);
+       if (!loc_dt.isValid()) {
+               LYXERR(Debug::LOCALE, "Could not parse `" << t
+                               << "´ (invalid format)");
+               return static_cast<time_t>(-1);
+       }
+       return loc_dt.toTime_t();
+#elif defined(_WIN32)
+#error "The minimum required Qt version on windows is Qt 4.4."
+#else
+       // strptime() is not available on windows (defined by POSIX)
+
+       // strptime() uses the current locale, so we need to switch to "C"
+       LYXERR(Debug::LOCALE, "Setting LC_ALL and LC_TIME to C");
+       string oldLC_ALL = getEnv("LC_ALL");
+       string oldLC_TIME = getEnv("LC_TIME");
+       if (!setEnv("LC_ALL", "C"))
+               LYXERR(Debug::LOCALE, "\t... LC_ALL failed!");
+       if (!setEnv("LC_TIME", "C"))
+               LYXERR(Debug::LOCALE, "\t... LC_TIME failed!");
+
+       struct tm loc_tm;
+       char const * const format = "%a%n%b%n%d%n%T%n%Y";
+       char * remainder = strptime(t.c_str(), format, &loc_tm);
+
+       LYXERR(Debug::LOCALE, "Resetting LC_ALL and LC_TIME");
+       if(!setEnv("LC_TIME", oldLC_TIME))
+               LYXERR(Debug::LOCALE, "\t... LC_TIME failed!");
+       if (!setEnv("LC_ALL", oldLC_ALL))
+               LYXERR(Debug::LOCALE, "\t... LC_ALL failed!");
+
+       if (!remainder) {
+               LYXERR(Debug::LOCALE, "Could not parse `" << t
+                               << "´ (invalid format)");
+               return static_cast<time_t>(-1);
+       }
+       if (*remainder != '\0') {
+               LYXERR(Debug::LOCALE, "Could not parse `" << t
+                               << "´ (excess characters)");
+               return static_cast<time_t>(-1);
+       }
+       return mktime(&loc_tm);
+#endif
+}
+
+} // namespace support
 } // namespace lyx