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tst_filterparser.c
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tst_filterparser.c
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/*
Copyright 2018, UCAR/Unidata
See COPYRIGHT file for copying and redistribution conditions.
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "netcdf.h"
#include "netcdf_filter.h"
#include "netcdf_aux.h"
#undef DEBUG
#define PARAMS_ID 32768
/* The C standard apparently defines all floating point constants as double;
we rely on that in this code. Update: apparently not true when
-ansi flag is used.
*/
#define DBLVAL 12345678.12345678
#define FLTVAL 789.0
#define LONGLONGVAL -9223372036854775807LL
#define ULONGLONGVAL 18446744073709551615ULL
#define MAXPARAMS 32
#define NPARAMS 16 /* # of unsigned ints in params */
/* Test support for the conversions */
/* Not sure if this kind of casting via union is legal C99 */
static union {
unsigned int ui;
float f;
} uf;
static union {
unsigned int ui[2];
double d;
} ud;
static union {
unsigned int ui[2];
unsigned long long ull;
long long ll;
} ul;
/* Expected contents of baseline:
id = 32768
index spec item Value
----------------------------------------
0 -17b 4294967279
1 23ub 23
2 -25S 42949677271
3 27US 27
4 77 77
5 93U 93
6 2147483647 ?
7 -2147483648 ?
8 4294967295U ?
9 789f 1145389056
<8-bytes start here >
10 -9223372036854775807L 1, 2147483647
12 18446744073709551615UL 4294967295U, 4294967295U
14 12345678.12345678d 3287505826, 1097305129
expected (LE):
{239, 23, 65511, 27, 77, 93, 2147483647, 2147483648, 4294967295, 1145389056,
1, 2147483648, 4294967295, 4294967295, 3287505826, 1097305129}
params (LE):
0x000000ef
0x00000017
0x0000ffe7
0x0000001b
0x0000004d
0x0000005d
0x7fffffff
0x80000000
0xffffffff
0x44454000
0x000000001 .ll
0x80000000
0xffffffff .ull
0xffffffff
0xc3f35ba2 .d
0x41678c29
expected (BE):
{239, 23, 65511, 27, 77, 93, 2147483647, 2147483648, 4294967295, 1145389056,
16777216, 128, 4294967295, 4294967295, 2723935171, 697067329}
params (BE):
0x000000ef
0x00000017
0x0000ffe7
0x0000001b
0x0000004d
0x0000005d
0x7fffffff
0x80000000
0xffffffff
0x44454000
0x01000000 .ll
0x00000080
0xffffffff .ull
0xffffffff
0xa25bf3c3 .d
0x298c6741
*/
static unsigned int baseline[MAXPARAMS]; /* Expected */
static const char* spec =
"32768, -17b, 23ub, -25S, 27US, 77, 93U, 2147483647, -2147483648, 4294967295U, 789f, -9223372036854775807L, 18446744073709551615UL, 12345678.12345678d";
/* Define the type strings for each spec entry */
static const char* spectype[] = {"i", "b", "ub", "s", "us", "i", "ui", "i", "i", "ui", "f", "ll", "ull", "d"};
static int nerrs = 0;
#ifdef WORDS_BIGENDIAN
static void byteswap8(unsigned char* mem);
static void byteswap4(unsigned char* mem);
#endif
static void
mismatch(size_t i, unsigned int *params, const char* tag)
{
fprintf(stderr,"mismatch: %s [%d] baseline=%u params=%u\n",tag,(int)i,baseline[i],params[i]);
fflush(stderr);
nerrs++;
}
static void
mismatch2(size_t i, unsigned int *params, const char* tag)
{
fprintf(stderr,"mismatch2: %s [%ld-%ld] baseline=%u,%u params=%u,%u\n",
tag,(long)i,(long)(i+1),baseline[i],baseline[i+1],params[i],params[i+1]);
fflush(stderr);
nerrs++;
}
static void
insert(int index, void* src, size_t size)
{
void* dst = &baseline[index];
memcpy(dst,src,size);
}
static void
buildbaseline(void)
{
unsigned int val4;
unsigned long long val8;
float float4;
double float8;
val4 = ((unsigned int)-17) & 0xff;
insert(0,&val4,sizeof(val4)); /* signed int*/
val4 = (unsigned int)23;
insert(1,&val4,sizeof(val4)); /* unsigned int*/
val4 = ((unsigned int)-25) & 0xffff;
insert(2,&val4,sizeof(val4)); /* signed int*/
val4 = (unsigned int)27;
insert(3,&val4,sizeof(val4)); /* unsigned int*/
val4 = (unsigned int)77;
insert(4,&val4,sizeof(val4)); /* signed int*/
val4 = (unsigned int)93;
insert(5,&val4,sizeof(val4)); /* unsigned int*/
val4 = 2147483647; /*0x7fffffff*/
insert(6,&val4,sizeof(val4)); /* signed int */
val4 = (-2147483647)-1; /*0x80000000*/
insert(7,&val4,sizeof(val4)); /* signed int */
val4 = 4294967295U; /*0xffffffff*/
insert(8,&val4,sizeof(val4)); /* unsigned int */
float4 = (float)FLTVAL;
insert(9,&float4,sizeof(float4)); /*float */
val8 = LONGLONGVAL;
insert(10,&val8,sizeof(val8)); /* signed long long */
val8 = ULONGLONGVAL;
insert(12,&val8,sizeof(val8)); /* unsigned long long */
float8 = DBLVAL;
insert(14,&float8,sizeof(float8)); /* double */
}
/**************************************************/
int
main(int argc, char **argv)
{
int stat = 0;
size_t i;
/* Provide for 8-byte values */
long long basell;
unsigned long long baseull;
float basef;
double based;
unsigned int filterid = 0;
size_t nparams;
unsigned int* params = NULL;
printf("\nTesting filter parser.\n");
buildbaseline(); /* Build our comparison vector */
stat = ncaux_h5filterspec_parse(spec,&filterid,&nparams,¶ms);
if(stat) {
fprintf(stderr,"ncaux_filter_parsespec failed\n");
goto done;
}
if(filterid != PARAMS_ID) {
fprintf(stderr,"mismatch: id: expected=%u actual=%u\n",(unsigned int)PARAMS_ID,filterid);
nerrs++;
}
/* Do all the 32 bit tests */
for(i=0;i<=8;i++) {
if(baseline[i] != params[i])
mismatch(i,params,spectype[i]);
}
/* float */
uf.ui = params[9];
memcpy(&basef,&baseline[9],4);
if(uf.f != basef)
mismatch(9,params,"uf.f");
/* signed long long */
ul.ui[0] = params[10];
ul.ui[1] = params[11];
ncaux_h5filterspec_fix8((unsigned char*)&ul.ll,1);
memcpy(&basell,&baseline[10],8);
if(ul.ll != basell)
mismatch2(10,params,"ul.ll");
/* unsigned long long */
ul.ui[0] = params[12];
ul.ui[1] = params[13];
ncaux_h5filterspec_fix8((unsigned char*)&ul.ull,1);
memcpy(&baseull,&baseline[12],8);
if(ul.ull != baseull)
mismatch2(12,params,"ul.ull");
/* double */
ud.ui[0] = params[14];
ud.ui[1] = params[15];
ncaux_h5filterspec_fix8((unsigned char*)&ud.d,1);
memcpy(&based,&baseline[14],8);
if(ud.d != based)
mismatch2(14,params,"ud.d");
if (!nerrs)
printf("SUCCESS!!\n");
done:
if(params) free(params);
return (stat || nerrs > 0 ? 1 : 0);
}
#ifdef DEBUG
/* Look at q0 and q1) to determine type */
static int
gettype(const int q0, const int q1, int* isunsignedp)
{
int type = 0;
int isunsigned = 0;
char typechar;
isunsigned = (q0 == 'u' || q0 == 'U');
if(q1 == '\0')
typechar = q0; /* we were given only a single char */
else if(isunsigned)
typechar = q1; /* we have something like Ux as the tag */
else
typechar = q1; /* look at last char for tag */
switch (typechar) {
case 'f': case 'F': case '.': type = 'f'; break; /* float */
case 'd': case 'D': type = 'd'; break; /* double */
case 'b': case 'B': type = 'b'; break; /* byte */
case 's': case 'S': type = 's'; break; /* short */
case 'l': case 'L': type = 'l'; break; /* long long */
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': type = 'i'; break;
case 'u': case 'U': type = 'i'; isunsigned = 1; break; /* unsigned int */
case '\0': type = 'i'; break;
default: break;
}
if(isunsignedp) *isunsignedp = isunsigned;
return type;
}
#ifdef WORDS_BIGENDIAN
/* Byte swap an 8-byte integer in place */
static void
byteswap8(unsigned char* mem)
{
unsigned char c;
c = mem[0];
mem[0] = mem[7];
mem[7] = c;
c = mem[1];
mem[1] = mem[6];
mem[6] = c;
c = mem[2];
mem[2] = mem[5];
mem[5] = c;
c = mem[3];
mem[3] = mem[4];
mem[4] = c;
}
/* Byte swap an 8-byte integer in place */
static void
byteswap4(unsigned char* mem)
{
unsigned char c;
c = mem[0];
mem[0] = mem[3];
mem[3] = c;
c = mem[1];
mem[1] = mem[2];
mem[2] = c;
}
#endif
#if 0
static void
NC4_h5filterspec_fix8(unsigned char* mem, int decode)
{
#ifdef WORDS_BIGENDIAN
if(decode) { /* Apply inverse of the encode case */
byteswap4(mem); /* step 1: byte-swap each piece */
byteswap4(mem+4);
byteswap8(mem); /* step 2: convert to little endian format */
} else { /* encode */
byteswap8(mem); /* step 1: convert to little endian format */
byteswap4(mem); /* step 2: byte-swap each piece */
byteswap4(mem+4);
}
#else /* Little endian */
/* No action is necessary */
#endif
}
#endif
#endif /*DEBUG*/