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/*
* Copyright (c) Medical Research Council 1994. All rights reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation for any purpose is hereby granted without fee, provided that
* this copyright and notice appears in all copies.
*
* This file was written by James Bonfield, Simon Dear, Rodger Staden,
* as part of the Staden Package at the MRC Laboratory of Molecular
* Biology, Hills Road, Cambridge, CB2 2QH, United Kingdom.
*
* MRC disclaims all warranties with regard to this software.
*/
/*
* File: array.c
* Version:
*
* Author:
* MRC Laboratory of Molecular Biology
* Hills Road
* Cambridge CB2 2QH
* United Kingdom
*
* Description:
*
* Created:
* Updated:
*
*/
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include "array.h"
#include "xalloc.h"
/*#include <c_asm.h>*/
char *ArrayErrorString(int err)
{
switch(err) {
case ARRAY_NO_ERROR: return "No error";
case ARRAY_FULL: return "Array full";
case ARRAY_INVALID_ARGUMENTS: return "Invalid arguments";
case ARRAY_OUT_OF_MEMORY: return "Out of memory";
default: return "Unknown error";
}
}
Array ArrayCreate(size_t size, size_t dim)
/*
* create a new array
*/
{
Array a;
/* printf("CR: 0x%lx:",(long)asm("bis %ra,%ra,%v0")); */
if ( (a = (Array) xmalloc(sizeof(ArrayStruct)) ) == NULL ) {
(void)aerr_set(ARRAY_OUT_OF_MEMORY);
} else {
a->size = size;
a->dim = dim?dim:1;
a->max = 0;
if ( (a->base = (void *)xmalloc(a->size * a->dim)) == NULL ) {
(void)aerr_set(ARRAY_OUT_OF_MEMORY);
xfree(a);
a = NULL;
}
}
/* printf("0x%lx - size %d\n", (long)a, a->size * a->dim); */
return a;
}
int ArrayExtend(Array a, size_t dim)
/*
* extend array
*/
{
void *newbase;
size_t old_dim;
if (a == NULL) {
return aerr_set(ARRAY_INVALID_ARGUMENTS);
}
if (dim < a->dim) {
return 0;
}
old_dim = a->dim;
while (dim >= a->dim) {
a->dim = a->dim * 1.2 + 1;
}
if ( (newbase = (void *)xrealloc(a->base, a->size * a->dim)) == NULL ) {
a->dim = old_dim;
return aerr_set(ARRAY_OUT_OF_MEMORY);
} else {
a->base = newbase;
}
return 0;
}
void *ArrayRef(Array a, size_t i)
{
if (a==NULL) {
(void)aerr_set(ARRAY_INVALID_ARGUMENTS);
return NULL;
}
if (i >= a->max) {
if (i >= a->dim) {
if (ArrayExtend(a,i+1)) {
/* ArrayExtend sets aerrnum */
return NULL;
}
}
a->max = i+1;
}
return (void *) arrp(char,a,i*a->size);
}
int ArrayDestroy(Array a)
/*
* destroy array
*/
{
/* printf("DR: 0x%lx:0x%lx\n",(long)asm("bis %ra,%ra,%v0"), (long)a); */
if (a==NULL) {
return aerr_set(ARRAY_INVALID_ARGUMENTS);
}
if (a->base != NULL) xfree(a->base);
a->base= NULL;
xfree(a);
return 0;
}
/*
* Concatenates Array b onto the end of Array a.
* Array b is left unmodified.
*
* Returns 0 on success;
* -1 on failure.
*/
int ArrayConcat(Array a, Array b) {
if (a->size != b->size) {
fprintf(stderr, "Attempt made to concatenate incompatible arrays\n");
return -1;
}
if (ArrayExtend(a, a->max + b->max))
return -1;
memcpy((char *)a->base + a->max*a->size,
(char *)b->base,
b->size * b->max);
a->max += b->max;
return 0;
}
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