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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libc/] [assoc.c] - Rev 227
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/* * assoc.c * rtems assoc routines * * $Id: assoc.c,v 1.2 2001-09-27 12:01:15 chris Exp $ */ #include <rtems.h> #include "assoc.h" #include <string.h> /* strcat, strcmp */ #define STREQ(a,b) (strcmp((a), (b)) == 0) #define rtems_assoc_is_default(ap) ((ap)->name && STREQ(ap->name, RTEMS_ASSOC_DEFAULT_NAME)) const rtems_assoc_t * rtems_assoc_ptr_by_name( const rtems_assoc_t *ap, const char *name ) { const rtems_assoc_t *default_ap = 0; if (rtems_assoc_is_default(ap)) default_ap = ap++; for ( ; ap->name; ap++) if (strcmp(ap->name, name) == 0) return ap; return default_ap; } const rtems_assoc_t * rtems_assoc_ptr_by_local( const rtems_assoc_t *ap, unsigned32 local_value ) { const rtems_assoc_t *default_ap = 0; if (rtems_assoc_is_default(ap)) default_ap = ap++; for ( ; ap->name; ap++) if (ap->local_value == local_value) return ap; return default_ap; } const rtems_assoc_t * rtems_assoc_ptr_by_remote( const rtems_assoc_t *ap, unsigned32 remote_value ) { const rtems_assoc_t *default_ap = 0; if (rtems_assoc_is_default(ap)) default_ap = ap++; for ( ; ap->name; ap++) if (ap->remote_value == remote_value) return ap; return default_ap; } /* * Get values */ unsigned32 rtems_assoc_remote_by_local( const rtems_assoc_t *ap, unsigned32 local_value ) { const rtems_assoc_t *nap; nap = rtems_assoc_ptr_by_local(ap, local_value); if (nap) return nap->remote_value; return 0; } unsigned32 rtems_assoc_local_by_remote( const rtems_assoc_t *ap, unsigned32 remote_value ) { const rtems_assoc_t *nap; nap = rtems_assoc_ptr_by_remote(ap, remote_value); if (nap) return nap->local_value; return 0; } unsigned32 rtems_assoc_remote_by_name( const rtems_assoc_t *ap, const char *name ) { const rtems_assoc_t *nap; nap = rtems_assoc_ptr_by_name(ap, name); if (nap) return nap->remote_value; return 0; } unsigned32 rtems_assoc_local_by_name( const rtems_assoc_t *ap, const char *name ) { const rtems_assoc_t *nap; nap = rtems_assoc_ptr_by_name(ap, name); if (nap) return nap->local_value; return 0; } /* * what to return if a value is not found * this is not reentrant, but it really shouldn't be invoked anyway */ const char *rtems_assoc_name_bad( unsigned32 bad_value ); /* body in separate file to reduce dependency on printf */ const char * rtems_assoc_name_by_local( const rtems_assoc_t *ap, unsigned32 local_value ) { const rtems_assoc_t *nap; nap = rtems_assoc_ptr_by_local(ap, local_value); if (nap) return nap->name; return rtems_assoc_name_bad(local_value); } const char * rtems_assoc_name_by_remote( const rtems_assoc_t *ap, unsigned32 remote_value ) { const rtems_assoc_t *nap; nap = rtems_assoc_ptr_by_remote(ap, remote_value); if (nap) return nap->name; return rtems_assoc_name_bad(remote_value); } /* * Bitfield functions assume just 1 bit set in each of remote and local * entries; they do not check for this. */ unsigned32 rtems_assoc_remote_by_local_bitfield( const rtems_assoc_t *ap, unsigned32 local_value ) { unsigned32 b; unsigned32 remote_value = 0; for (b = 1; b; b <<= 1) if (b & local_value) remote_value |= rtems_assoc_remote_by_local(ap, b); return remote_value; } unsigned32 rtems_assoc_local_by_remote_bitfield( const rtems_assoc_t *ap, unsigned32 remote_value ) { unsigned32 b; unsigned32 local_value = 0; for (b = 1; b; b <<= 1) if (b & remote_value) local_value |= rtems_assoc_local_by_remote(ap, b); return local_value; } char * rtems_assoc_name_by_remote_bitfield( const rtems_assoc_t *ap, unsigned32 value, char *buffer ) { unsigned32 b; *buffer = 0; for (b = 1; b; b <<= 1) if (b & value) { if (*buffer) strcat(buffer, " "); strcat(buffer, rtems_assoc_name_by_remote(ap, b)); } return buffer; } char * rtems_assoc_name_by_local_bitfield( const rtems_assoc_t *ap, unsigned32 value, char *buffer ) { unsigned32 b; *buffer = 0; for (b = 1; b; b <<= 1) if (b & value) { if (*buffer) strcat(buffer, " "); strcat(buffer, rtems_assoc_name_by_local(ap, b)); } return buffer; }
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