From 6ddde92a3a45e970b05770633dc6a337d5d013c5 Mon Sep 17 00:00:00 2001 From: Tor Andersson Date: Mon, 27 Sep 2004 02:15:04 +0200 Subject: Initial import --- object/array.c | 182 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 182 insertions(+) create mode 100644 object/array.c (limited to 'object/array.c') diff --git a/object/array.c b/object/array.c new file mode 100644 index 00000000..d7beeb38 --- /dev/null +++ b/object/array.c @@ -0,0 +1,182 @@ +#include + +fz_error * +fz_newarray(fz_obj **op, int initialcap) +{ + fz_obj *obj; + int i; + + obj = *op = fz_malloc(sizeof (fz_obj)); + if (!obj) return fz_outofmem; + + obj->kind = FZ_ARRAY; + obj->refcount = 1; + + obj->u.a.len = 0; + obj->u.a.cap = initialcap > 0 ? initialcap : 6; + + obj->u.a.items = fz_malloc(sizeof (fz_obj*) * obj->u.a.cap); + if (!obj->u.a.items) { fz_free(obj); return fz_outofmem; } + + for (i = 0; i < obj->u.a.cap; i++) + obj->u.a.items[i] = nil; + + return nil; +} + +fz_error * +fz_copyarray(fz_obj **op, fz_obj *obj) +{ + fz_error *err; + fz_obj *new; + int i; + + if (!fz_isarray(obj)) + return fz_throw("typecheck in copyarray"); + + err = fz_newarray(&new, fz_arraylen(obj)); + if (err) return err; + *op = new; + + for (i = 0; i < fz_arraylen(obj); i++) { + err = fz_arraypush(new, fz_arrayget(obj, i)); + if (err) { fz_freearray(new); return err; } + } + + return nil; +} + +fz_error * +fz_deepcopyarray(fz_obj **op, fz_obj *obj) +{ + fz_error *err; + fz_obj *new; + fz_obj *val; + int i; + + if (!fz_isarray(obj)) + return fz_throw("typecheck in deepcopyarray"); + + err = fz_newarray(&new, fz_arraylen(obj)); + if (err) return err; + *op = new; + + for (i = 0; i < fz_arraylen(obj); i++) + { + val = fz_arrayget(obj, i); + + if (fz_isarray(val)) { + err = fz_deepcopyarray(&val, val); + if (err) { fz_freearray(new); return err; } + err = fz_arraypush(new, val); + if (err) { fz_dropobj(val); fz_freearray(new); return err; } + fz_dropobj(val); + } + + else if (fz_isdict(val)) { + err = fz_deepcopydict(&val, val); + if (err) { fz_freearray(new); return err; } + err = fz_arraypush(new, val); + if (err) { fz_dropobj(val); fz_freearray(new); return err; } + fz_dropobj(val); + } + + else { + err = fz_arraypush(new, val); + if (err) { fz_freearray(new); return err; } + } + } + + return nil; +} + +int +fz_arraylen(fz_obj *obj) +{ + if (!fz_isarray(obj)) + return 0; + return obj->u.a.len; +} + +fz_obj * +fz_arrayget(fz_obj *obj, int i) +{ + if (!fz_isarray(obj)) + return nil; + + if (i < 0 || i >= obj->u.a.len) + return nil; + + return obj->u.a.items[i]; +} + +fz_error * +fz_arrayput(fz_obj *obj, int i, fz_obj *item) +{ + if (!fz_isarray(obj)) + return fz_throw("typecheck in arrayput"); + if (i < 0) + return fz_throw("rangecheck in arrayput: %d < 0", i); + if (i >= obj->u.a.len) + return fz_throw("rangecheck in arrayput: %d > %d", i, obj->u.a.len); + + if (obj->u.a.items[i]) + fz_dropobj(obj->u.a.items[i]); + obj->u.a.items[i] = fz_keepobj(item); + + return nil; +} + +static fz_error * +growarray(fz_obj *obj) +{ + fz_obj **newitems; + int newcap; + int i; + + newcap = obj->u.a.cap * 2; + newitems = fz_realloc(obj->u.a.items, sizeof (fz_obj*) * newcap); + if (!newitems) return fz_outofmem; + + obj->u.a.items = newitems; + for (i = obj->u.a.cap ; i < newcap; i++) + obj->u.a.items[i] = nil; + obj->u.a.cap = newcap; + + return nil; +} + +fz_error * +fz_arraypush(fz_obj *obj, fz_obj *item) +{ + fz_error *err; + + if (!fz_isarray(obj)) + return fz_throw("typecheck in arraypush"); + + if (obj->u.a.len + 1 > obj->u.a.cap) { + err = growarray(obj); + if (err) return err; + } + + obj->u.a.items[obj->u.a.len] = fz_keepobj(item); + obj->u.a.len++; + + return nil; +} + +void +fz_freearray(fz_obj *obj) +{ + int i; + + assert(obj->kind == FZ_ARRAY); + + for (i = 0; i < obj->u.a.len; i++) + if (obj->u.a.items[i]) + fz_dropobj(obj->u.a.items[i]); + + fz_free(obj->u.a.items); + fz_free(obj); +} + -- cgit v1.2.3