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/*
* Variable length array of strings
* Copyright
* (C) 1992 Joseph H. Allen
*
* This file is part of JOE (Joe's Own Editor)
*/
#include "types.h"
aELEMENT *vamk(int len)
{
int *new = (int *) joe_malloc((1 + len) * sizeof(aELEMENT) + 2 * sizeof(int));
new[0] = len;
new[1] = 0;
((aELEMENT *)(new + 2))[0] = aterm;
return (aELEMENT *)(new + 2);
}
void varm(aELEMENT *vary)
{
if (vary) {
vazap(vary, 0, aLen(vary));
joe_free((int *) vary - 2);
}
}
int alen(aELEMENT *ary)
{
if (ary) {
aELEMENT *beg = ary;
while (acmp(*ary, aterm))
++ary;
return ary - beg;
} else
return 0;
}
aELEMENT *vaensure(aELEMENT *vary, int len)
{
if (!vary)
vary = vamk(len);
else if (len > aSiz(vary)) {
len += (len >> 2);
vary = (aELEMENT *)(2 + (int *) joe_realloc((int *) vary - 2, (len + 1) * sizeof(aELEMENT) + 2 * sizeof(int)));
aSiz(vary) = len;
}
return vary;
}
aELEMENT *vazap(aELEMENT *vary, int pos, int n)
{
if (vary) {
int x;
if (pos < aLen(vary)) {
if (pos + n <= aLen(vary)) {
for (x = pos; x != pos + n; ++x)
adel(vary[x]);
} else {
for (x = pos; x != aLen(vary); ++x)
adel(vary[x]);
}
}
}
return vary;
}
aELEMENT *vatrunc(aELEMENT *vary, int len)
{
if (!vary || len > aLEN(vary))
vary = vaensure(vary, len);
if (len < aLen(vary)) {
vary = vazap(vary, len, aLen(vary) - len);
vary[len] = vary[aLen(vary)];
aLen(vary) = len;
} else if (len > aLen(vary)) {
vary = vafill(vary, aLen(vary), ablank, len - aLen(vary));
}
return vary;
}
aELEMENT *vafill(aELEMENT *vary, int pos, aELEMENT el, int len)
{
int olen = aLEN(vary), x;
if (!vary || pos + len > aSIZ(vary))
vary = vaensure(vary, pos + len);
if (pos + len > olen) {
vary[pos + len] = vary[olen];
aLen(vary) = pos + len;
}
for (x = pos; x != pos + len; ++x)
vary[x] = adup(el);
if (pos > olen)
vary = vafill(vary, pos, ablank, pos - olen);
return vary;
}
#ifdef junk
aELEMENT *vancpy(aELEMENT *vary, int pos, aELEMENT *array, int len)
{
int olen = aLEN(vary);
if (!vary || pos + len > aSIZ(vary))
vary = vaensure(vary, pos + len);
if (pos + len > olen) {
vary[pos + len] = vary[olen];
aLen(vary) = pos + len;
}
if (pos > olen)
vary = vafill(vary, olen, ablank, pos - olen);
mfwrd(vary + pos, array, len * sizeof(aELEMENT));
return vary;
}
#endif
aELEMENT *vandup(aELEMENT *vary, int pos, aELEMENT *array, int len)
{
int olen = aLEN(vary), x;
if (!vary || pos + len > aSIZ(vary))
vary = vaensure(vary, pos + len);
if (pos + len > olen) {
vary[pos + len] = vary[olen];
aLen(vary) = pos + len;
}
if (pos > olen)
vary = vafill(vary, olen, ablank, pos - olen);
for (x = 0; x != len; ++x)
vary[x + pos] = adup(array[x]);
return vary;
}
aELEMENT *vadup(aELEMENT *vary)
{
return vandup(NULL, 0, vary, aLEN(vary));
}
aELEMENT *_vaset(aELEMENT *vary, int pos, aELEMENT el)
{
if (!vary || pos + 1 > aSIZ(vary))
vary = vaensure(vary, pos + 1);
if (pos > aLen(vary)) {
vary = vafill(vary, aLen(vary), ablank, pos - aLen(vary));
vary[pos + 1] = vary[pos];
vary[pos] = el;
aLen(vary) = pos + 1;
} else if (pos == aLen(vary)) {
vary[pos + 1] = vary[pos];
vary[pos] = el;
aLen(vary) = pos + 1;
} else {
adel(vary[pos]);
vary[pos] = el;
}
return vary;
}
static int _acmp(aELEMENT *a, aELEMENT *b)
{
return acmp(*a, *b);
}
aELEMENT *vasort(aELEMENT *ary, int len)
{
if (!ary || !len)
return ary;
qsort(ary, len, sizeof(aELEMENT), (int (*)(const void *, const void *))_acmp);
return ary;
}
aELEMENT *vawords(aELEMENT *a, unsigned char *s, int len, unsigned char *sep, int seplen)
{
int x;
if (!a)
a = vamk(10);
else
a = vatrunc(a, 0);
loop:
x = vsspan(s, len, sep, seplen);
s += x;
len -= x;
if (len) {
x = vsscan(s, len, sep, seplen);
if (x != ~0) {
a = vaadd(a, vsncpy(vsmk(x), 0, s, x));
s += x;
len -= x;
if (len)
goto loop;
} else
a = vaadd(a, vsncpy(vsmk(len), 0, s, len));
}
return a;
}
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