1 //===========================================================================
5 // Internal __mbtowc_c() routine
7 //===========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
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27 // or inline functions from this file, or you compile this file and link it
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38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //===========================================================================
41 //#####DESCRIPTIONBEGIN####
43 // Author(s): jjohnstn
44 // Contributors: jjohnstn
46 // Purpose: Provide internal use __mbtowc_c() routine
47 // Description: C locale version of mbtowc()
50 //####DESCRIPTIONEND####
52 //===========================================================================
57 #include <pkgconf/libc_i18n.h> // Configuration header
61 #include <cyg/infra/cyg_type.h> // Common type definitions
62 #include <cyg/infra/cyg_trac.h> // Tracing support
63 #include <cyg/infra/cyg_ass.h> // Assertion support
65 #include <stdlib.h> // Header for this file
66 #include <string.h> // strcmp definition
67 #include <stddef.h> // size_t definition
68 #include "internal.h" // internal __isxxxx macros
72 #if defined(CYGDBG_USE_TRACING) && defined(CYGNUM_LIBC_STDLIB_MBTOWC_TRACE_LEVEL)
73 static int mbtowc_trace = CYGNUM_LIBC_STDLIB_MBTOWC_TRACE_LEVEL;
74 # define TL1 (0 < mbtowc_trace)
84 __mbtowc_c ( wchar_t *pwc, const char *s, size_t n, int *state )
87 unsigned char *t = (unsigned char *)s;
90 CYG_REPORT_FUNCNAMETYPE( "__mbtowc_c", "returning %d" );
91 CYG_REPORT_FUNCARG4( "pwc=%08x, s=%08x, n=%ud, state=%08x", pwc, s, n, state );
94 CYG_CHECK_DATA_PTR( pwc, "pwc is not a valid pointer!" );
96 CYG_CHECK_DATA_PTR( s, "s is not a valid pointer!" );
101 if (s != NULL && n == 0)
104 CYG_REPORT_RETVAL (retval);
109 retval = 0; /* not state-dependent */
114 retval = (*t != '\0');
116 CYG_REPORT_RETVAL (retval);