#include <list>
#include <string>
+#include <stddef.h>
#include <stdarg.h>
class GlobalError /*{{{*/
*
* \return \b false
*/
- bool FatalE(const char *Function,const char *Description,...) __like_printf(3) __cold;
+ bool FatalE(const char *Function,const char *Description,...) APT_PRINTF(3) APT_COLD;
/** \brief add an Error message with errno to the list
*
*
* \return \b false
*/
- bool Errno(const char *Function,const char *Description,...) __like_printf(3) __cold;
+ bool Errno(const char *Function,const char *Description,...) APT_PRINTF(3) APT_COLD;
/** \brief add a warning message with errno to the list
*
*
* \return \b false
*/
- bool WarningE(const char *Function,const char *Description,...) __like_printf(3) __cold;
+ bool WarningE(const char *Function,const char *Description,...) APT_PRINTF(3) APT_COLD;
/** \brief add a notice message with errno to the list
*
*
* \return \b false
*/
- bool NoticeE(const char *Function,const char *Description,...) __like_printf(3) __cold;
+ bool NoticeE(const char *Function,const char *Description,...) APT_PRINTF(3) APT_COLD;
/** \brief add a debug message with errno to the list
*
*
* \return \b false
*/
- bool DebugE(const char *Function,const char *Description,...) __like_printf(3) __cold;
+ bool DebugE(const char *Function,const char *Description,...) APT_PRINTF(3) APT_COLD;
+
+ /** \brief adds an errno message with the given type
+ *
+ * \param type of the error message
+ * \param Function which failed
+ * \param Description of the error
+ */
+ bool InsertErrno(MsgType const &type, const char* Function,
+ const char* Description,...) APT_PRINTF(4) APT_COLD;
+
+ /** \brief adds an errno message with the given type
+ *
+ * args needs to be initialized with va_start and terminated
+ * with va_end by the caller. msgSize is also an out-parameter
+ * in case the msgSize was not enough to store the complete message.
+ *
+ * \param type of the error message
+ * \param Function which failed
+ * \param Description is the format string for args
+ * \param args list from a printf-like function
+ * \param errsv is the errno the error is for
+ * \param msgSize is the size of the char[] used to store message
+ * \return true if the message was added, false if not - the caller
+ * should call this method again in that case
+ */
+ bool InsertErrno(MsgType type, const char* Function,
+ const char* Description, va_list &args,
+ int const errsv, size_t &msgSize) APT_COLD;
/** \brief add an fatal error message to the list
*
* Most of the stuff we consider as "error" is also "fatal" for
* the user as the application will not have the expected result,
* but a fatal message here means that it gets printed directly
- * to stderr in addiction to adding it to the list as the error
+ * to stderr in addition to adding it to the list as the error
* leads sometimes to crashes and a maybe duplicated message
* is better than "Segfault" as the only displayed text
*
*
* \return \b false
*/
- bool Fatal(const char *Description,...) __like_printf(2) __cold;
+ bool Fatal(const char *Description,...) APT_PRINTF(2) APT_COLD;
/** \brief add an Error message to the list
*
*
* \return \b false
*/
- bool Error(const char *Description,...) __like_printf(2) __cold;
+ bool Error(const char *Description,...) APT_PRINTF(2) APT_COLD;
/** \brief add a warning message to the list
*
*
* \return \b false
*/
- bool Warning(const char *Description,...) __like_printf(2) __cold;
+ bool Warning(const char *Description,...) APT_PRINTF(2) APT_COLD;
/** \brief add a notice message to the list
*
*
* \return \b false
*/
- bool Notice(const char *Description,...) __like_printf(2) __cold;
+ bool Notice(const char *Description,...) APT_PRINTF(2) APT_COLD;
/** \brief add a debug message to the list
*
*
* \return \b false
*/
- bool Debug(const char *Description,...) __like_printf(2) __cold;
+ bool Debug(const char *Description,...) APT_PRINTF(2) APT_COLD;
+
+ /** \brief adds an error message with the given type
+ *
+ * \param type of the error message
+ * \param Description of the error
+ */
+ bool Insert(MsgType const &type, const char* Description,...) APT_PRINTF(3) APT_COLD;
+
+ /** \brief adds an error message with the given type
+ *
+ * args needs to be initialized with va_start and terminated
+ * with va_end by the caller. msgSize is also an out-parameter
+ * in case the msgSize was not enough to store the complete message.
+ *
+ * \param type of the error message
+ * \param Description is the format string for args
+ * \param args list from a printf-like function
+ * \param msgSize is the size of the char[] used to store message
+ * \return true if the message was added, false if not - the caller
+ * should call this method again in that case
+ */
+ bool Insert(MsgType type, const char* Description,
+ va_list &args, size_t &msgSize) APT_COLD;
/** \brief is an error in the list?
*
* \return \b true if an error is included in the list, \b false otherwise
*/
- inline bool PendingError() const {return PendingFlag;};
+ inline bool PendingError() const APT_PURE {return PendingFlag;};
/** \brief is the list empty?
*
- * The default checks if the list is empty or contains only notices,
- * if you want to check if also no notices happend set the parameter
- * flag to \b false.
+ * Can be used to check if the current stack level doesn't include
+ * anything equal or more severe than a given threshold, defaulting
+ * to warning level for historic reasons.
*
- * \param WithoutNotice does notices count, default is \b true, so no
+ * \param threshold minimum level considered
*
- * \return \b true if an the list is empty, \b false otherwise
+ * \return \b true if the list is empty, \b false otherwise
*/
- bool empty(MsgType const &trashhold = WARNING) const;
+ bool empty(MsgType const &threshold = WARNING) const APT_PURE;
/** \brief returns and removes the first (or last) message in the list
*
/** \brief outputs the list of messages to the given stream
*
- * Note that all messages are discarded, also the notices
- * displayed or not.
+ * Note that all messages are discarded, even undisplayed ones.
*
* \param[out] out output stream to write the messages in
- * \param WithoutNotice output notices or not
+ * \param threshold minimum level considered
+ * \param mergeStack if true recursively dumps the entire stack
*/
- void DumpErrors(std::ostream &out, MsgType const &trashhold = WARNING);
+ void DumpErrors(std::ostream &out, MsgType const &threshold = WARNING,
+ bool const &mergeStack = true);
/** \brief dumps the list of messages to std::cerr
*
* Note that all messages are discarded, also the notices
* displayed or not.
*
- * \param WithoutNotice print notices or not
+ * \param threshold minimum level printed
*/
- void inline DumpErrors(MsgType const &trashhold = WARNING) {
- DumpErrors(std::cerr, trashhold);
+ void inline DumpErrors(MsgType const &threshold) {
+ DumpErrors(std::cerr, threshold);
+ }
+
+ // mvo: we do this instead of using a default parameter in the
+ // previous declaration to avoid a (subtle) API break for
+ // e.g. sigc++ and mem_fun0
+ /** \brief dumps the messages of type WARNING or higher to std::cerr
+ *
+ * Note that all messages are discarded, displayed or not.
+ *
+ */
+ void inline DumpErrors() {
+ DumpErrors(WARNING);
+ }
+
+ /** \brief put the current Messages into the stack
+ *
+ * All "old" messages will be pushed into a stack to
+ * them later back, but for now the Message query will be
+ * empty and performs as no messages were present before.
+ *
+ * The stack can be as deep as you want - all stack operations
+ * will only operate on the last element in the stack.
+ */
+ void PushToStack();
+
+ /** \brief throw away all current messages */
+ void RevertToStack();
+
+ /** \brief merge current and stack together */
+ void MergeWithStack();
+
+ /** \brief return the deep of the stack */
+ size_t StackCount() const APT_PURE {
+ return Stacks.size();
}
GlobalError();
Item(char const *Text, MsgType const &Type) :
Text(Text), Type(Type) {};
- friend std::ostream& operator<< (std::ostream &out, Item i) {
+ APT_HIDDEN friend std::ostream& operator<< (std::ostream &out, Item i) {
switch(i.Type) {
case FATAL:
- case ERROR: out << "E"; break;
- case WARNING: out << "W"; break;
- case NOTICE: out << "N"; break;
- case DEBUG: out << "D"; break;
+ case ERROR: out << 'E'; break;
+ case WARNING: out << 'W'; break;
+ case NOTICE: out << 'N'; break;
+ case DEBUG: out << 'D'; break;
}
- return out << ": " << i.Text;
+ out << ": ";
+ std::string::size_type line_start = 0;
+ std::string::size_type line_end;
+ while ((line_end = i.Text.find_first_of("\n\r", line_start)) != std::string::npos) {
+ if (line_start != 0)
+ out << std::endl << " ";
+ out << i.Text.substr(line_start, line_end - line_start);
+ line_start = i.Text.find_first_not_of("\n\r", line_end + 1);
+ if (line_start == std::string::npos)
+ break;
+ }
+ if (line_start == 0)
+ out << i.Text;
+ else if (line_start != std::string::npos)
+ out << std::endl << " " << i.Text.substr(line_start);
+ return out;
}
};
std::list<Item> Messages;
bool PendingFlag;
- bool InsertErrno(MsgType type, const char* Function,
- const char* Description, va_list const &args);
- bool Insert(MsgType type, const char* Description,
- va_list const &args);
+ struct MsgStack {
+ std::list<Item> Messages;
+ bool const PendingFlag;
+
+ MsgStack(std::list<Item> const &Messages, bool const &Pending) :
+ Messages(Messages), PendingFlag(Pending) {};
+ };
+
+ std::list<MsgStack> Stacks;
/*}}}*/
};
/*}}}*/
projects / apt.git / blobdiff