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/*
* Copyright (C) 1999-2002 Stijn van Dongen.
*/
#include "util/array.h"
#include "util/alloc.h"
#include "util/types.h"
#include <string.h>
void mcxSplice
( void* base1pptr
, const void* base2ptr
, int size /* size of base1 and base2 members */
, int *pn_base1 /* # base1 elements currently in use */
, int *pN_base1 /* # base1 elements for which is malloced */
, int O_base1 /* splice relative to this element */
, int d_base1 /* delete this number of elements */
, int c_base2 /* number of elements to copy */
)
{ char **ppr1 = (char **) base1pptr
; const char *ptr2 = (const char *) base2ptr
; int n_base1 = *pn_base1
; int N_base1 = *pN_base1
; int m_base1 = n_base1 - d_base1 + c_base2
; int o_base1 = O_base1 >= 0
?
O_base1
:
n_base1 + O_base1 + 1
; const char *dieMsg = ""
; if (0)
{ die
: fprintf
( stderr
, "[mcxSplice PBD] %s\n"
"[mcxSplice] [n1, %d] [N1, %d] [o1, %d] [d1, %d] [c2, %d]\n"
, dieMsg
, n_base1, N_base1, O_base1, d_base1, c_base2
)
; exit(1)
; }
if ( n_base1 < 0
|| N_base1 < 0
|| n_base1 > N_base1
|| d_base1 < 0
|| c_base2 < 0
)
{ dieMsg = "integer arguments not consistent"
; goto die
; }
if (o_base1 < 0 || o_base1 > n_base1)
{ dieMsg = "computed splice offset not in bounds"
; goto die
; }
if (*ppr1 == NULL && ptr2 == NULL)
{ dieMsg = "source and destination both void"
; goto die
; }
if (o_base1 + d_base1 > n_base1)
{ dieMsg = "not that many elements to delete"
; goto die
; }
if (m_base1 > N_base1)
*ppr1 = mcxRealloc(*ppr1, size*m_base1, RETURN_ON_FAIL)
, *pN_base1 = N_base1 = m_base1
; if (m_base1 && *ppr1 == NULL)
mcxMemDenied(stderr, "mcxSplice", "void", m_base1)
, exit(1)
; if (o_base1 < n_base1)
memmove
( *ppr1 + size*(o_base1 + c_base2)
, *ppr1 + size*(o_base1 + d_base1)
, size*(n_base1 - o_base1 - d_base1)
)
; if (c_base2)
memcpy
( *ppr1 + size * (o_base1)
, ptr2
, size*(c_base2)
)
; *pn_base1 = m_base1
; }
int mcxSplitsearch
( void* key
, void* base
, int nr
, int size
, int (*cmp)(const void*, const void*)
, mcxbool right
)
{ int u = nr-1
; int l = 0
; int left = right == 0 ? 1 : 0
; if (!base)
{ fprintf(stderr, "[mcxSplitsearch] warning: received void argument\n")
; return -1
; }
else if (!cmp(((char*)base)+(nr-1)*size, key) )
{ return left ? nr-1 : -1
; }
else if ( cmp(((char*)base)+0, key) )
{ return left ? -1 : 0
; }
/* invariant: cmp(base[u], key)
!cmp(base[l], key)
*/
while (l+1 < u)
{ int m = (l+u)/2
; if (!cmp(((char*)base)+m*size, key) )
l = m
; else
u = m
; }
return u - left
; }
int mcxDedup
( void* base
, int nmemb
, int size
, int (*cmp)(const void *, const void *)
, void (*merge)(void *, const void *)
)
{ int k = 0
; int l = 0
; while (l < nmemb)
{
if (k != l)
memcpy(((char*)base) + k * size, ((char*)base) + l * size, size)
; while
( ++l < nmemb
&& ( cmp
? (!cmp(((char*)base) + k * size, ((char*)base) + l * size))
: (!memcmp(((char*)base) + k*size, ((char*)base) + l*size, size))
)
)
{ if (merge)
{ merge(((char*)base) + k * size, ((char*)base) + l * size)
; }
}
; k++
; }
return k
; }
/* =======================================================================
*
* The stuff below is a little bit nonsensical. Kept it for nostalgia.
*
* =======================================================================
*/
#if 0
typedef struct
{
void* ls
; int n
; int n_alloc /* For future functionality */
; int size
;
} mcxArray ;
typedef struct
{
mcxArray* ls
; int n
; int n_alloc /* For future functionality */
;
} mcxTable ;
mcxArray* mcxArrayInit
(
mcxArray *ar
, int n
, int size
, void* (*obInit) (void *)
) ;
mcxTable* mcxTableNew
(
int n
, int len
, int size
, void* (*obInit) (void *)
) ;
void mcxArrayRelease
(
mcxArray* ar
, void (*obRelease)(void *)
) ;
void mcxArrayFree
(
mcxArray** arpp
, void (*obRelease)(void *)
) ;
my_inline void mcxArrayFree
(
mcxArray** arpp
, void (*obRelease)(void *)
)
{
if (*arpp)
{ mcxArrayRelease(*arpp, obRelease)
; mcxFree(*arpp)
; *arpp = NULL
; }
; }
void mcxTableFree
(
mcxTable** tablepp
, void (*obRelease)(void *)
) ;
mcxArray* mcxArrayInit
(
mcxArray* ar
, int n
, int size
, void* (*obInit) (void *)
)
{
char* ob
; if (!ar)
ar = (mcxArray*) mcxAlloc(sizeof(mcxArray), EXIT_ON_FAIL)
; ar->ls = (void*) mcxAlloc
( n * size
, RETURN_ON_FAIL
)
; if (n && !ar->ls)
mcxMemDenied(stderr, "mcxArray", "void", n)
, exit(1)
; ar->n = n
; ar->n_alloc = n
; ar->size = size
; ob = ar->ls
; if (obInit)
{ while (--n >= 0)
{
obInit(ob)
; ob += size
; }
; }
; return ar
; }
mcxTable* mcxTableNew
(
int n
, int len
, int size
, void* (*obInit) (void *)
)
{
mcxArray *ar
; mcxTable *table = (mcxTable*) mcxAlloc
( sizeof(mcxTable)
, EXIT_ON_FAIL
)
; table->ls = (mcxArray*) mcxAlloc
( n*sizeof(mcxArray)
, RETURN_ON_FAIL
)
; if (n && !table->ls)
mcxMemDenied(stderr, "mcxTableNew", "mcxArray", n)
, exit(1)
; table->n = n
; ar = table->ls
; while (--n >= 0)
mcxArrayInit(ar, len, size, obInit)
, ar++
; return table
; }
void mcxArrayRelease
(
mcxArray* ar
, void (*obRelease)(void *)
)
{
if (ar)
{
int n = ar->n
; char* ob = (char*) ar->ls
; if (obRelease)
{ while (--n >= 0)
{ obRelease(ob)
; ob += ar->size
; }
; }
; mcxFree(ar->ls)
; ar->ls = NULL
; ar->n = 0
; ar->n_alloc = 0
; ar->size = 0
; }
; }
void mcxTableFree
(
mcxTable** tablepp
, void (*obRelease)(void *)
)
{
if (*tablepp)
{
int n = (*tablepp)->n
; mcxArray * ar = (*tablepp)->ls
; while (--n >= 0)
mcxArrayRelease(ar, obRelease)
, ar++
; mcxFree((*tablepp)->ls)
; mcxFree(*tablepp)
; (*tablepp) = NULL
; }
; }
#endif
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