| 1 | /* Copyright 2009, UCAR/Unidata and OPeNDAP, Inc. |
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| 2 | See the COPYRIGHT file for more information. */ |
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| 3 | |
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| 4 | #ifndef NCBYTES_H |
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| 5 | #define NCBYTES_H 1 |
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| 6 | |
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| 7 | typedef struct NCbytes { |
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| 8 | int nonextendible; /* 1 => fail if an attempt is made to extend this buffer*/ |
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| 9 | unsigned int alloc; |
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| 10 | unsigned int length; |
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| 11 | char* content; |
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| 12 | } NCbytes; |
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| 13 | |
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| 14 | #if defined(_CPLUSPLUS_) || defined(__CPLUSPLUS__) || defined(__CPLUSPLUS) |
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| 15 | #define EXTERNC extern "C" |
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| 16 | #else |
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| 17 | #define EXTERNC extern |
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| 18 | #endif |
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| 19 | |
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| 20 | EXTERNC NCbytes* ncbytesnew(void); |
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| 21 | EXTERNC void ncbytesfree(NCbytes*); |
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| 22 | EXTERNC int ncbytessetalloc(NCbytes*,unsigned int); |
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| 23 | EXTERNC int ncbytessetlength(NCbytes*,unsigned int); |
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| 24 | EXTERNC int ncbytesfill(NCbytes*, char fill); |
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| 25 | |
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| 26 | /* Produce a duplicate of the contents*/ |
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| 27 | EXTERNC char* ncbytesdup(NCbytes*); |
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| 28 | /* Extract the contents and leave buffer empty */ |
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| 29 | EXTERNC char* ncbytesextract(NCbytes*); |
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| 30 | |
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| 31 | /* Return the ith byte; -1 if no such index */ |
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| 32 | EXTERNC int ncbytesget(NCbytes*,unsigned int); |
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| 33 | /* Set the ith byte */ |
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| 34 | EXTERNC int ncbytesset(NCbytes*,unsigned int,char); |
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| 35 | |
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| 36 | /* Append one byte */ |
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| 37 | EXTERNC int ncbytesappend(NCbytes*,char); /* Add at Tail */ |
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| 38 | /* Append n bytes */ |
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| 39 | EXTERNC int ncbytesappendn(NCbytes*,void*,unsigned int); /* Add at Tail */ |
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| 40 | |
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| 41 | /* Null terminate the byte string without extending its length (for debugging) */ |
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| 42 | EXTERNC int ncbytesnull(NCbytes*); |
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| 43 | |
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| 44 | /* Concatenate a null-terminated string to the end of the buffer */ |
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| 45 | EXTERNC int ncbytescat(NCbytes*,char*); |
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| 46 | |
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| 47 | /* Set the contents of the buffer; mark the buffer as non-extendible */ |
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| 48 | EXTERNC int ncbytessetcontents(NCbytes*, char*, unsigned int); |
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| 49 | |
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| 50 | /* Following are always "in-lined"*/ |
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| 51 | #define ncbyteslength(bb) ((bb)?(bb)->length:0U) |
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| 52 | #define ncbytesalloc(bb) ((bb)?(bb)->alloc:0U) |
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| 53 | #define ncbytescontents(bb) ((bb && bb->content)?(bb)->content:(char*)"") |
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| 54 | #define ncbytesextend(bb,len) ncbytessetalloc((bb),(len)+(bb->alloc)) |
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| 55 | #define ncbytesclear(bb) ((bb)?(bb)->length=0:0U) |
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| 56 | #define ncbytesavail(bb,n) ((bb)?((bb)->alloc - (bb)->length) >= (n):0U) |
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| 57 | |
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| 58 | #endif /*NCBYTES_H*/ |
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