diff options
Diffstat (limited to 'apt-pkg/contrib/error.cc')
| -rw-r--r-- | apt-pkg/contrib/error.cc | 333 |
1 files changed, 155 insertions, 178 deletions
diff --git a/apt-pkg/contrib/error.cc b/apt-pkg/contrib/error.cc index 927b7e05c..837d9e615 100644 --- a/apt-pkg/contrib/error.cc +++ b/apt-pkg/contrib/error.cc @@ -1,16 +1,15 @@ // -*- mode: cpp; mode: fold -*- // Description /*{{{*/ -// $Id: error.cc,v 1.11 2002/03/26 07:38:58 jgg Exp $ /* ###################################################################### - - Global Erorr Class - Global error mechanism + + Global Error Class - Global error mechanism We use a simple STL vector to store each error record. A PendingFlag is kept which indicates when the vector contains a Sever error. - + This source is placed in the Public Domain, do with it what you will It was originally written by Jason Gunthorpe. - + ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ @@ -19,7 +18,6 @@ #include <iostream> #include <errno.h> #include <stdio.h> -#include <stdarg.h> #include <unistd.h> #include <string> @@ -28,209 +26,188 @@ #include "config.h" /*}}}*/ -using namespace std; - // Global Error Object /*{{{*/ /* If the implementation supports posix threads then the accessor function is compiled to be thread safe otherwise a non-safe version is used. A Per-Thread error object is maintained in much the same manner as libc manages errno */ #if defined(_POSIX_THREADS) && defined(HAVE_PTHREAD) - #include <pthread.h> - - static pthread_key_t ErrorKey; - static void ErrorDestroy(void *Obj) {delete (GlobalError *)Obj;}; - static void KeyAlloc() {pthread_key_create(&ErrorKey,ErrorDestroy);}; - - GlobalError *_GetErrorObj() - { - static pthread_once_t Once = PTHREAD_ONCE_INIT; - pthread_once(&Once,KeyAlloc); - - void *Res = pthread_getspecific(ErrorKey); - if (Res == 0) - pthread_setspecific(ErrorKey,Res = new GlobalError); - return (GlobalError *)Res; - } + #include <pthread.h> + + static pthread_key_t ErrorKey; + static void ErrorDestroy(void *Obj) {delete (GlobalError *)Obj;}; + static void KeyAlloc() {pthread_key_create(&ErrorKey,ErrorDestroy);}; + + GlobalError *_GetErrorObj() { + static pthread_once_t Once = PTHREAD_ONCE_INIT; + pthread_once(&Once,KeyAlloc); + + void *Res = pthread_getspecific(ErrorKey); + if (Res == 0) + pthread_setspecific(ErrorKey,Res = new GlobalError); + return (GlobalError *)Res; + } #else - GlobalError *_GetErrorObj() - { - static GlobalError *Obj = new GlobalError; - return Obj; - } + GlobalError *_GetErrorObj() { + static GlobalError *Obj = new GlobalError; + return Obj; + } #endif /*}}}*/ - // GlobalError::GlobalError - Constructor /*{{{*/ -// --------------------------------------------------------------------- -/* */ -GlobalError::GlobalError() : List(0), PendingFlag(false) -{ +GlobalError::GlobalError() : PendingFlag(false) {} + /*}}}*/ +// GlobalError::FatalE - Get part of the error string from errno /*{{{*/ +bool GlobalError::FatalE(const char *Function,const char *Description,...) { + va_list args; + va_start(args,Description); + return InsertErrno(FATAL, Function, Description, args); } /*}}}*/ // GlobalError::Errno - Get part of the error string from errno /*{{{*/ -// --------------------------------------------------------------------- -/* Function indicates the stdlib function that failed and Description is - a user string that leads the text. Form is: - Description - Function (errno: strerror) - Carefull of the buffer overrun, sprintf. - */ -bool GlobalError::Errno(const char *Function,const char *Description,...) -{ - va_list args; - va_start(args,Description); - - // sprintf the description - char S[400]; - vsnprintf(S,sizeof(S),Description,args); - snprintf(S + strlen(S),sizeof(S) - strlen(S), - " - %s (%i: %s)",Function,errno,strerror(errno)); - - // Put it on the list - Item *Itm = new Item; - Itm->Text = S; - Itm->Error = true; - Insert(Itm); - - PendingFlag = true; - - return false; +bool GlobalError::Errno(const char *Function,const char *Description,...) { + va_list args; + va_start(args,Description); + return InsertErrno(ERROR, Function, Description, args); } /*}}}*/ -// GlobalError::WarningE - Get part of the warn string from errno /*{{{*/ -// --------------------------------------------------------------------- -/* Function indicates the stdlib function that failed and Description is - a user string that leads the text. Form is: - Description - Function (errno: strerror) - Carefull of the buffer overrun, sprintf. - */ -bool GlobalError::WarningE(const char *Function,const char *Description,...) -{ - va_list args; - va_start(args,Description); - - // sprintf the description - char S[400]; - vsnprintf(S,sizeof(S),Description,args); - snprintf(S + strlen(S),sizeof(S) - strlen(S), - " - %s (%i: %s)",Function,errno,strerror(errno)); - - // Put it on the list - Item *Itm = new Item; - Itm->Text = S; - Itm->Error = false; - Insert(Itm); - - return false; +// GlobalError::WarningE - Get part of the warning string from errno /*{{{*/ +bool GlobalError::WarningE(const char *Function,const char *Description,...) { + va_list args; + va_start(args,Description); + return InsertErrno(WARNING, Function, Description, args); +} + /*}}}*/ +// GlobalError::NoticeE - Get part of the notice string from errno /*{{{*/ +bool GlobalError::NoticeE(const char *Function,const char *Description,...) { + va_list args; + va_start(args,Description); + return InsertErrno(NOTICE, Function, Description, args); +} + /*}}}*/ +// GlobalError::DebugE - Get part of the debug string from errno /*{{{*/ +bool GlobalError::DebugE(const char *Function,const char *Description,...) { + va_list args; + va_start(args,Description); + return InsertErrno(DEBUG, Function, Description, args); +} + /*}}}*/ +// GlobalError::InsertErrno - formats an error message with the errno /*{{{*/ +bool GlobalError::InsertErrno(MsgType type, const char* Function, + const char* Description, va_list const &args) { + char S[400]; + vsnprintf(S,sizeof(S),Description,args); + snprintf(S + strlen(S),sizeof(S) - strlen(S), + " - %s (%i: %s)", Function, errno, strerror(errno)); + return Insert(type, S, args); +} + /*}}}*/ +// GlobalError::Fatal - Add a fatal error to the list /*{{{*/ +bool GlobalError::Fatal(const char *Description,...) { + va_list args; + va_start(args,Description); + return Insert(FATAL, Description, args); } /*}}}*/ // GlobalError::Error - Add an error to the list /*{{{*/ -// --------------------------------------------------------------------- -/* Just vsprintfs and pushes */ -bool GlobalError::Error(const char *Description,...) -{ - va_list args; - va_start(args,Description); - - // sprintf the description - char S[400]; - vsnprintf(S,sizeof(S),Description,args); - - // Put it on the list - Item *Itm = new Item; - Itm->Text = S; - Itm->Error = true; - Insert(Itm); - - PendingFlag = true; - - return false; +bool GlobalError::Error(const char *Description,...) { + va_list args; + va_start(args,Description); + return Insert(ERROR, Description, args); } /*}}}*/ // GlobalError::Warning - Add a warning to the list /*{{{*/ -// --------------------------------------------------------------------- -/* This doesn't set the pending error flag */ -bool GlobalError::Warning(const char *Description,...) +bool GlobalError::Warning(const char *Description,...) { + va_list args; + va_start(args,Description); + return Insert(WARNING, Description, args); +} + /*}}}*/ +// GlobalError::Notice - Add a notice to the list /*{{{*/ +bool GlobalError::Notice(const char *Description,...) { - va_list args; - va_start(args,Description); - - // sprintf the description - char S[400]; - vsnprintf(S,sizeof(S),Description,args); - - // Put it on the list - Item *Itm = new Item; - Itm->Text = S; - Itm->Error = false; - Insert(Itm); - - return false; + va_list args; + va_start(args,Description); + return Insert(NOTICE, Description, args); } /*}}}*/ -// GlobalError::PopMessage - Pulls a single message out /*{{{*/ -// --------------------------------------------------------------------- -/* This should be used in a loop checking empty() each cycle. It returns - true if the message is an error. */ -bool GlobalError::PopMessage(string &Text) +// GlobalError::Debug - Add a debug to the list /*{{{*/ +bool GlobalError::Debug(const char *Description,...) { - if (List == 0) - return false; - - bool Ret = List->Error; - Text = List->Text; - Item *Old = List; - List = List->Next; - delete Old; - - // This really should check the list to see if only warnings are left.. - if (List == 0) - PendingFlag = false; - - return Ret; + va_list args; + va_start(args,Description); + return Insert(DEBUG, Description, args); +} + /*}}}*/ +// GlobalError::Insert - Insert a new item at the end /*{{{*/ +bool GlobalError::Insert(MsgType type, const char* Description, + va_list const &args) { + char S[400]; + vsnprintf(S,sizeof(S),Description,args); + + Item const m(S, type); + Messages.push_back(m); + + if (type == ERROR || type == FATAL) + PendingFlag = true; + + if (type == FATAL || type == DEBUG) + std::clog << m << std::endl; + + return false; +} + /*}}}*/ +// GlobalError::PopMessage - Pulls a single message out /*{{{*/ +bool GlobalError::PopMessage(std::string &Text) { + if (Messages.empty() == true) + return false; + + Item const msg = Messages.front(); + Messages.pop_front(); + + bool const Ret = (msg.Type == ERROR || msg.Type == FATAL); + Text = msg.Text; + if (PendingFlag == false || Ret == false) + return Ret; + + // check if another error message is pending + for (std::list<Item>::const_iterator m = Messages.begin(); + m != Messages.end(); m++) + if (m->Type == ERROR || m->Type == FATAL) + return Ret; + + PendingFlag = false; + return Ret; } /*}}}*/ // GlobalError::DumpErrors - Dump all of the errors/warns to cerr /*{{{*/ -// --------------------------------------------------------------------- -/* */ -void GlobalError::DumpErrors() -{ - // Print any errors or warnings found - string Err; - while (empty() == false) - { - bool Type = PopMessage(Err); - if (Type == true) - cerr << "E: " << Err << endl; - else - cerr << "W: " << Err << endl; - } +void GlobalError::DumpErrors(std::ostream &out, MsgType const &trashhold) { + for (std::list<Item>::const_iterator m = Messages.begin(); + m != Messages.end(); m++) + if (m->Type >= trashhold) + out << (*m) << std::endl; + Discard(); } /*}}}*/ -// GlobalError::Discard - Discard /*{{{*/ -// --------------------------------------------------------------------- -/* */ -void GlobalError::Discard() -{ - while (List != 0) - { - Item *Old = List; - List = List->Next; - delete Old; - } - - PendingFlag = false; +// GlobalError::Discard - Discard /*{{{*/ +void GlobalError::Discard() { + Messages.clear(); + PendingFlag = false; }; /*}}}*/ -// GlobalError::Insert - Insert a new item at the end /*{{{*/ -// --------------------------------------------------------------------- -/* */ -void GlobalError::Insert(Item *Itm) -{ - Item **End = &List; - for (Item *I = List; I != 0; I = I->Next) - End = &I->Next; - Itm->Next = *End; - *End = Itm; +// GlobalError::empty - does our error list include anything? /*{{{*/ +bool GlobalError::empty(MsgType const &trashhold) const { + if (PendingFlag == true) + return false; + + if (Messages.empty() == true) + return true; + + for (std::list<Item>::const_iterator m = Messages.begin(); + m != Messages.end(); m++) + if (m->Type >= trashhold) + return false; + + return true; } /*}}}*/ |