diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/bio.h | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/include/bio.h b/include/bio.h index c754d7a57..be4d8d80e 100644 --- a/include/bio.h +++ b/include/bio.h @@ -70,10 +70,28 @@ struct Biobuf unsigned char b[Bungetsize+Bsize]; }; +/* + * These macros get 1-, 2-, and 4-byte integer values by reading the + * next few bytes in little-endian order. + */ #define BGETC(bp)\ - ((bp)->icount?(bp)->bbuf[(bp)->bsize+(bp)->icount++]:Bgetc((bp))) + ((bp)->icount?(bp)->ebuf[(bp)->icount++]:Bgetc((bp))) +#define BGETLE2(bp)\ + ((bp)->icount<=-2?((bp)->icount+=2,((bp)->ebuf[(bp)->icount-2])|((bp)->ebuf[(bp)->icount-1]<<8)):Bgetle2((bp))) +#define BGETLE4(bp)\ + ((bp)->icount<=-4?((bp)->icount+=4,((bp)->ebuf[(bp)->icount-4])|((bp)->ebuf[(bp)->icount-3]<<8)|((bp)->ebuf[(bp)->icount-2]<<16)|((bp)->ebuf[(bp)->icount-1]<<24)):Bgetle4((bp))) + +/* + * These macros put 1-, 2-, and 4-byte integer values by writing the + * next few bytes in little-endian order. + */ #define BPUTC(bp,c)\ - ((bp)->ocount?(bp)->bbuf[(bp)->bsize+(bp)->ocount++]=(c),0:Bputc((bp),(c))) + ((bp)->ocount?(bp)->ebuf[(bp)->ocount++]=(unsigned char)(c),0:Bputc((bp),(c))) +#define BPUTLE2(bp,c)\ + ((bp)->ocount<=-2?(bp)->ocount+=2,(bp)->ebuf[(bp)->ocount-2]=(unsigned char)(c),(bp)->ebuf[(bp)->ocount-1]=(unsigned char)(c>>8),0:Bputle2((bp),(c))) +#define BPUTLE4(bp,c)\ + ((bp)->ocount<=-4?(bp)->ocount+=4,(bp)->ebuf[(bp)->ocount-4]=(unsigned char)(c),(bp)->ebuf[(bp)->ocount-3]=(unsigned char)(c>>8),(bp)->ebuf[(bp)->ocount-2]=(unsigned char)(c>>16),(bp)->ebuf[(bp)->ocount-1]=(unsigned char)(c>>24),0:Bputle4((bp),(c))) + #define BOFFSET(bp)\ (((bp)->state==Bractive)?\ (bp)->offset + (bp)->icount:\ @@ -90,6 +108,8 @@ Biobuf* Bfdopen(int, int); int Bfildes(Biobuf*); int Bflush(Biobuf*); int Bgetc(Biobuf*); +int Bgetle2(Biobuf*); +int Bgetle4(Biobuf*); int Bgetd(Biobuf*, double*); long Bgetrune(Biobuf*); int Binit(Biobuf*, int, int); @@ -99,6 +119,8 @@ vlong Boffset(Biobuf*); Biobuf* Bopen(char*, int); int Bprint(Biobuf*, char*, ...); int Bputc(Biobuf*, int); +int Bputle2(Biobuf*, int); +int Bputle4(Biobuf*, int); int Bputrune(Biobuf*, long); void* Brdline(Biobuf*, int); char* Brdstr(Biobuf*, int, int); |