50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
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// 5 may 2015
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#include <string.h>
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#include "out/ui.h"
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#include "uipriv.h"
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struct ptrArray *newPtrArray(void)
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{
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return uiNew(struct ptrArray);
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}
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void ptrArrayDestroy(struct ptrArray *p)
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{
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if (p->len != 0)
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complain("attempt to destroy ptrarray %p while it still has pointers inside", p);
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if (p->ptrs != NULL) // array was created but nothing was ever put inside
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uiFree(p->ptrs);
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uiFree(p);
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}
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#define grow 32
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void ptrArrayAppend(struct ptrArray *p, void *d)
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{
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ptrArrayInsertAt(p, p->len, d);
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}
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void ptrArrayInsertAt(struct ptrArray *p, uintmax_t i, void *d)
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{
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if (i > p->len)
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complain("index out of range in ptrArrayInsertAt()");
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if (p->len >= p->cap) {
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p->cap += grow;
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p->ptrs = (void **) uiRealloc(p->ptrs, p->cap * sizeof (void *), "void *[]");
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}
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// thanks to ValleyBell
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memmove(&(p->ptrs[i + 1]), &(p->ptrs[i]), (p->len - i) * sizeof (void *));
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p->ptrs[i] = d;
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p->len++;
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}
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void ptrArrayDelete(struct ptrArray *p, uintmax_t i)
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{
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if (i >= p->len)
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complain("index out of range in ptrArrayRemove()");
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// thanks to ValleyBell
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memmove(&(p->ptrs[i]), &(p->ptrs[i + 1]), (p->len - i - 1) * sizeof (void *));
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p->ptrs[p->len - 1] = NULL;
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p->len--;
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}
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