Fixed various issues with libfcgi on Linux, mainly related to stdout,stderr,stdin, feof and related.

Added `reset' to the libfcgi input stream so that it is possible to reset previous errors.

library/server/ewsgi/connectors/libfcgi/src/wgi_libfcgi_connector.e

@@ -62,6 +62,7 @@ feature -- Execution
 			rescued: BOOLEAN
 		do
 			if not rescued then
+				a_input.reset
 				create req.make (vars, a_input, Current)
 				create res.make (a_output, a_output)
 				service.execute (req, res)

library/server/ewsgi/connectors/libfcgi/src/wgi_libfcgi_input_stream.e

@@ -32,6 +32,21 @@ feature {NONE} -- Initialization
 			create last_string.make_empty
 		end
 
+feature -- Reset
+
+	reset
+			-- Reset current input stream
+			-- especially any previous error if any.
+		do
+			debug ("wsf")
+				io.error.put_string (generator + " : reset %N")
+			end
+			last_string.wipe_out
+			last_character := '%U'
+			internal_end_of_input := False
+			fcgi.fcgi_clearerr
+		end
+
 feature -- Status report
 
 	is_open_read: BOOLEAN
@@ -43,9 +58,11 @@ feature -- Status report
 	end_of_input: BOOLEAN
 			-- Has the end of input stream been reached?
 		do
-			Result := fcgi.fcgi_end_of_input
+			Result := fcgi.fcgi_end_of_input or internal_end_of_input
 		end
 
+	internal_end_of_input: BOOLEAN
+
 feature -- Input
 
 	read_character
@@ -59,6 +76,7 @@ feature -- Input
 			if s.count >= 1 then
 				last_character := s.item (1)
 			else
+				internal_end_of_input := True
 				last_character := '%U'
 			end
 		end
@@ -69,6 +87,7 @@ feature -- Input
 			-- Make result available in `last_string'.	
 		do
 			fcgi.fill_string_from_stdin (last_string, nb_char)
+			internal_end_of_input := last_string.count < nb_char
 		end
 
 feature -- Access		
@@ -86,7 +105,7 @@ feature {NONE} -- Implementation
 			-- Bridge to FCGI world
 
 note
-	copyright: "2011-2011, Eiffel Software and others"
+	copyright: "2011-2013, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
 	source: "[
 			Eiffel Software

library/server/libfcgi/implementation/linux/fcgi_c_api.e

@@ -68,10 +68,28 @@ feature {FCGI_IMP} -- Internal
 
 	feof (v: POINTER): INTEGER
 			-- FCGI_feof()
+			-- 0 means EOF not detected.
 		external
 			"C inline use %"fcgi_stdio.h%""
 		alias
-			"FCGI_feof"
+			"return FCGI_feof($v);"
+		end
+
+	ferror (v: POINTER): INTEGER
+			-- FCGI_ferror()
+			-- 0 means no error.
+		external
+			"C inline use %"fcgi_stdio.h%""
+		alias
+			"return FCGI_ferror($v);"
+		end
+
+	clearerr (v: POINTER)
+			-- FCGI_clearerr().
+		external
+			"C inline use %"fcgi_stdio.h%""
+		alias
+			"FCGI_clearerr($v)"
 		end
 
 feature {NONE} -- Input
@@ -108,27 +126,27 @@ feature -- Error
 feature -- Access
 
 	stdout: POINTER
-			-- FCGI_stdout() return pointer on output FCGI_FILE
+			-- FCGI_stdout return pointer on output FCGI_FILE
 		external
 			"C inline use %"fcgi_stdio.h%""
 		alias
-			"FCGI_stdout"
+			"return FCGI_stdout;"
 		end
 
 	stdin: POINTER
-			-- FCGI_stdin() return pointer on input FCGI_FILE
+			-- FCGI_stdin return pointer on input FCGI_FILE
 		external
 			"C inline use %"fcgi_stdio.h%""
 		alias
-			"FCGI_stdin"
+			"return FCGI_stdin;"
 		end
 
 	stderr: POINTER
-			-- FCGI_stderr() return pointer on error FCGI_FILE
+			-- FCGI_stderr return pointer on error FCGI_FILE
 		external
 			"C inline use %"fcgi_stdio.h%""
 		alias
-			"FCGI_stderr"
+			"return FCGI_stderr;"
 		end
 
 note

library/server/libfcgi/implementation/linux/fcgi_imp.e

@@ -32,7 +32,12 @@ feature -- Access
 
 	fcgi_end_of_input: BOOLEAN
 		do
-			Result := fcgi.feof (fcgi.stdin) = 0
+			Result := fcgi.feof (fcgi.stdin) /= 0 --| in fact, True if feof (..) = EOF
+		end
+
+	fcgi_clearerr
+		do
+			fcgi.clearerr (fcgi.stdin)
 		end
 
 feature -- FCGI Connection
@@ -175,7 +180,7 @@ feature -- I/O Routines
 --RFO		end
 
 note
-	copyright: "Copyright (c) 1984-2011, Eiffel Software and others"
+	copyright: "Copyright (c) 1984-2013, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
 	source: "[
 			Eiffel Software

library/server/libfcgi/implementation/mac/fcgi_c_api.e

@@ -68,10 +68,28 @@ feature {FCGI_IMP} -- Internal
 
 	feof (v: POINTER): INTEGER
 			-- FCGI_feof()
+			-- 0 means EOF not detected.
 		external
 			"C inline use %"fcgi_stdio.h%""
 		alias
-			"FCGI_feof"
+			"return FCGI_feof($v);"
+		end
+
+	ferror (v: POINTER): INTEGER
+			-- FCGI_ferror()
+			-- 0 means no error.
+		external
+			"C inline use %"fcgi_stdio.h%""
+		alias
+			"return FCGI_ferror($v);"
+		end
+
+	clearerr (v: POINTER)
+			-- FCGI_clearerr().
+		external
+			"C inline use %"fcgi_stdio.h%""
+		alias
+			"FCGI_clearerr($v)"
 		end
 
 feature {NONE} -- Input
@@ -108,27 +126,27 @@ feature -- Error
 feature -- Access
 
 	stdout: POINTER
-			-- FCGI_stdout() return pointer on output FCGI_FILE
+			-- FCGI_stdout return pointer on output FCGI_FILE
 		external
 			"C inline use %"fcgi_stdio.h%""
 		alias
-			"FCGI_stdout"
+			"return FCGI_stdout;"
 		end
 
 	stdin: POINTER
-			-- FCGI_stdin() return pointer on input FCGI_FILE
+			-- FCGI_stdin return pointer on input FCGI_FILE
 		external
 			"C inline use %"fcgi_stdio.h%""
 		alias
-			"FCGI_stdin"
+			"return FCGI_stdin;"
 		end
 
 	stderr: POINTER
-			-- FCGI_stderr() return pointer on error FCGI_FILE
+			-- FCGI_stderr return pointer on error FCGI_FILE
 		external
 			"C inline use %"fcgi_stdio.h%""
 		alias
-			"FCGI_stderr"
+			"return FCGI_stderr;"
 		end
 
 note

library/server/libfcgi/implementation/mac/fcgi_imp.e

@@ -32,7 +32,12 @@ feature -- Access
 
 	fcgi_end_of_input: BOOLEAN
 		do
-			Result := fcgi.feof (fcgi.stdin) = 0
+			Result := fcgi.feof (fcgi.stdin) /= 0 --| in fact, True if feof (..) = EOF
+		end
+	
+	fcgi_clearerr
+		do
+			fcgi.clearerr (fcgi.stdin)
 		end
 
 feature -- FCGI Connection

library/server/libfcgi/implementation/windows/fcgi_c_api.e

@@ -65,12 +65,30 @@ feature {FCGI_IMP} -- Internal
 
 	feof (v: POINTER): INTEGER
 			-- FCGI_feof()
+			-- 0 means EOF not detected.
 		external
 			"dll libfcgi.dll signature (EIF_POINTER): EIF_INTEGER use fcgi_stdio.h "
 		alias
 			"FCGI_feof"
 		end
 
+	ferror (v: POINTER): INTEGER
+			-- FCGI_ferror()
+			-- 0 means no error.
+		external
+			"dll libfcgi.dll signature (EIF_POINTER): EIF_INTEGER use fcgi_stdio.h "
+		alias
+			"FCGI_ferror"
+		end
+
+	clearerr (v: POINTER)
+			-- FCGI_clearerr().
+		external
+			"dll libfcgi.dll signature (EIF_POINTER) use fcgi_stdio.h "
+		alias
+			"FCGI_clearerr"
+		end
+
 feature {NONE} -- Input
 
 	fread (v: POINTER; a_size: INTEGER; n: INTEGER; fp: POINTER): INTEGER
@@ -123,30 +141,29 @@ feature {NONE} -- Output
 feature -- Access
 
 	stdout: POINTER
-			-- FCGI_stdout() return pointer on output FCGI_FILE
+			-- FCGI_stdout return pointer on output FCGI_FILE
 		external
 			"C inline use %"fcgi_stdio.h%""
 		alias
-			"FCGI_stdout"
+			"return FCGI_stdout;"
 		end
 
 	stdin: POINTER
-			-- FCGI_stdin() return pointer on input FCGI_FILE
+			-- FCGI_stdin return pointer on input FCGI_FILE
 		external
 			"C inline use %"fcgi_stdio.h%""
 		alias
-			"FCGI_stdin"
+			"return FCGI_stdin;"
 		end
 
 	stderr: POINTER
-			-- FCGI_stderr() return pointer on error FCGI_FILE
+			-- FCGI_stderr return pointer on error FCGI_FILE
 		external
 			"C inline use %"fcgi_stdio.h%""
 		alias
-			"FCGI_stderr"
+			"return FCGI_stderr;"
 		end
 
-
 note
 	copyright: "Copyright (c) 1984-2011, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"

library/server/libfcgi/implementation/windows/fcgi_imp.e

@@ -30,7 +30,12 @@ feature -- Access
 
 	fcgi_end_of_input: BOOLEAN
 		do
-			Result := fcgi.feof (fcgi.stdin) = 0
+			Result := fcgi.feof (fcgi.stdin) /= 0 --| in fact, True if feof (..) = EOF
+		end
+
+	fcgi_clearerr
+		do
+			fcgi.clearerr (fcgi.stdin)
 		end
 
 --	updated_environ_variables: HASH_TABLE [STRING, STRING]