Initial revision

darcs-hash:20050920132639-ac50b-fa3b476891e1f5f67207cf4cc7bf623834cc5edc.gz

1 files changed, 40 insertions, 0 deletions

diff --git a/input_common.h b/input_common.h
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+/** \file input_common.h
+	
+Header file for the low level input library
+
+*/
+#ifndef INPUT_COMMON_HH
+#define INPUT_COMMON_HH
+
+/** 
+	Hopefully, the biggest value that a wchar_t can have. UCS4 is a
+	31-bit character set, we use the upper half for special key
+	sequences. On systems where wchar_t is not a 31 (or less) bit character set
+	in a 32 (or more) bit type this will fail horribly. 
+*/
+#define WCHAR_END 0x80000000
+
+enum
+{
+	R_NULL = WCHAR_END + 1
+}
+	;
+
+void input_common_init( int (*ih)() );
+
+void input_common_destroy();
+
+/**
+   Function used by input_readch to read bytes from stdin until enough
+   bytes have been read to convert them to a wchar_t. Conversion is
+   done using mbrtowc. If a character has previously been read and
+   then 'unread' using \c input_common_unreadch, that character is
+   returned. If timed is true, readch2 will wait at most
+   WAIT_ON_ESCAPE milliseconds for a character to be available for
+   reading before returning with the value WEOF.
+*/
+wchar_t input_common_readch( int timed );
+
+void input_common_unreadch( wint_t ch );
+
+#endif