Author: sebor
Date: Wed May 7 14:24:23 2008
New Revision: 654286
URL: http://svn.apache.org/viewvc?rev=654286&view=rev
Log:
2008-05-07 Martin Sebor <[EMAIL PROTECTED]>
* examples/manual/failure.cpp (main): Demonstrated the (optional)
extensions, classes std::ios::badbit_set, std::ios::eofbit_set,
and std::ios::failbit_set.
* examples/manual/in/failure.in: Added "interesting" input file.
* examples/manual/in/failure.in: Set expected output.
Added:
stdcxx/branches/4.2.x/examples/manual/in/failure.in (with props)
Modified:
stdcxx/branches/4.2.x/examples/manual/failure.cpp
stdcxx/branches/4.2.x/examples/manual/out/failure.out
Modified: stdcxx/branches/4.2.x/examples/manual/failure.cpp
URL:
http://svn.apache.org/viewvc/stdcxx/branches/4.2.x/examples/manual/failure.cpp?rev=654286&r1=654285&r2=654286&view=diff
==============================================================================
--- stdcxx/branches/4.2.x/examples/manual/failure.cpp (original)
+++ stdcxx/branches/4.2.x/examples/manual/failure.cpp Wed May 7 14:24:23 2008
@@ -1,6 +1,7 @@
/**************************************************************************
*
- * failure.cpp - Example program demonstrating ios::failure.
+ * failure.cpp - Example program demonstrating the use of ios::failure
+ * and its extendsions provided by this implementation.
*
* $Id$
*
@@ -22,7 +23,7 @@
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*
- * Copyright 1994-2006 Rogue Wave Software.
+ * Copyright 1994-2008 Rogue Wave Software, Inc.
*
**************************************************************************/
@@ -31,39 +32,78 @@
#include <examples.h>
+
#ifndef _RWSTD_NO_EXCEPTIONS
int main ()
{
- try {
- // Enable exceptions in cin.
- std::cin.exceptions (std::ios::eofbit);
-
- // Clear all bits and set eofbit.
- std::cin.clear (std::ios::eofbit);
- }
- catch (const std::ios::failure &e) {
- std::cout << "Caught an exception: " << e.what () << std::endl;
- }
- catch (const std::exception &e) {
- std::cout << "Caught an exception: " << e.what () << std::endl;
-
- return 1; // Indicate failure.
- }
- catch (...) {
- std::cout << "Caught an unknown exception" << std::endl;
-
- return 1; // Indicate failure.
- }
+ const std::ios::iostate allbits =
+ std::ios::badbit | std::ios::eofbit | std::ios::failbit;
+
+ // Enable all exceptions in cin.
+ std::cin.exceptions (allbits);
+
+ while (!std::cin.eof ()) {
+
+ // Clear state bits.
+ std::cin.clear ();
+
+ try {
+ short i;
+ char ch;
+
+ // Try to extract a character and an integer.
+ std::cin >> ch >> i;
+
+ std::cout << ch << ' ' << i << '\n';
+ }
+
+#ifndef _RWSTD_NO_EXT_FAILURE
+
+ // Classes badbit_set, eofbit_set, and failbit_set are
+ // derived from failure and are optional extensions of
+ // this implementation.
+
+ catch (const std::ios::badbit_set &e) {
+ std::cout << "Caught std::ios::badbit_set: "
+ << e.what () << '\n';
+ }
+ catch (const std::ios::eofbit_set &e) {
+ std::cout << "Caught std::ios::eofbit_set: "
+ << e.what () << '\n';
+ }
+ catch (const std::ios::failbit_set &e) {
+ std::cout << "Caught std::ios::failbit_set: "
+ << e.what () << '\n';
+ }
+
+#endif // _RWSTD_NO_EXT_FAILURE
+
+ catch (const std::ios::failure &e) {
+ std::cout << "Caught std::ios::failure: "
+ << e.what () << '\n';
+ }
+ catch (const std::exception &e) {
+ std::cout << "Caught std::exception: "
+ << e.what () << '\n';
+
+ return 1; // Indicate error.
+ }
+ catch (...) {
+ std::cout << "Caught an unknown exception\n";
+
+ return 1; // Indicate error.
+ }
+ }
- return 0;
+ return 0;
}
-#else
+#else // if defined (_RWSTD_NO_EXCEPTIONS)
int main ()
{
- std::cout << "Exceptions not supported." << std::endl;
+ std::cout << "Exceptions not supported\n";
return 0;
}
Added: stdcxx/branches/4.2.x/examples/manual/in/failure.in
URL:
http://svn.apache.org/viewvc/stdcxx/branches/4.2.x/examples/manual/in/failure.in?rev=654286&view=auto
==============================================================================
--- stdcxx/branches/4.2.x/examples/manual/in/failure.in (added)
+++ stdcxx/branches/4.2.x/examples/manual/in/failure.in Wed May 7 14:24:23 2008
@@ -0,0 +1,4 @@
+a+1234
+b-1234567890
+c+2345
+d-
Propchange: stdcxx/branches/4.2.x/examples/manual/in/failure.in
------------------------------------------------------------------------------
svn:eol-style = native
Modified: stdcxx/branches/4.2.x/examples/manual/out/failure.out
URL:
http://svn.apache.org/viewvc/stdcxx/branches/4.2.x/examples/manual/out/failure.out?rev=654286&r1=654285&r2=654286&view=diff
==============================================================================
--- stdcxx/branches/4.2.x/examples/manual/out/failure.out (original)
+++ stdcxx/branches/4.2.x/examples/manual/out/failure.out Wed May 7 14:24:23
2008
@@ -1 +1,5 @@
-Caught an exception: std::cin: stream object has set ios::eofbit
+a 1234
+Caught std::ios::failbit_set: std::cin: stream object has set ios::failbit
+c 2345
+Caught std::ios::failbit_set: std::cin: stream object has set ios::failbit
+Caught std::ios::failure: std::cin: stream object has set failbit, eofbit
