diff options
Diffstat (limited to 'stream/obj_simple.c')
| -rw-r--r-- | stream/obj_simple.c | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/stream/obj_simple.c b/stream/obj_simple.c new file mode 100644 index 00000000..131e11b4 --- /dev/null +++ b/stream/obj_simple.c @@ -0,0 +1,297 @@ +#include <fitz.h> + +extern void fz_droparray(fz_obj *array); +extern void fz_dropdict(fz_obj *dict); + +#define NEWOBJ(KIND,SIZE) \ + fz_obj *o; \ + o = *op = fz_malloc(SIZE); \ + if (!o) return fz_outofmem; \ + o->refs = 1; \ + o->kind = KIND; \ + +fz_error * +fz_newnull(fz_obj **op) +{ + NEWOBJ(FZ_NULL, sizeof (fz_obj)); + return nil; +} + +fz_error * +fz_newbool(fz_obj **op, int b) +{ + NEWOBJ(FZ_BOOL, sizeof (fz_obj)); + o->u.b = b; + return nil; +} + +fz_error * +fz_newint(fz_obj **op, int i) +{ + NEWOBJ(FZ_INT, sizeof (fz_obj)); + o->u.i = i; + return nil; +} + +fz_error * +fz_newreal(fz_obj **op, float f) +{ + NEWOBJ(FZ_REAL, sizeof (fz_obj)); + o->u.f = f; + return nil; +} + +fz_error * +fz_newstring(fz_obj **op, char *str, int len) +{ + NEWOBJ(FZ_STRING, offsetof(fz_obj, u.s.buf) + len + 1); + o->u.s.len = len; + memcpy(o->u.s.buf, str, len); + o->u.s.buf[len] = '\0'; + return nil; +} + +fz_error * +fz_newname(fz_obj **op, char *str) +{ + NEWOBJ(FZ_NAME, offsetof(fz_obj, u.n) + strlen(str) + 1); + strcpy(o->u.n, str); + return nil; +} + +fz_error * +fz_newindirect(fz_obj **op, int objid, int genid) +{ + NEWOBJ(FZ_INDIRECT, sizeof (fz_obj)); + o->u.r.oid = objid; + o->u.r.gid = genid; + return nil; +} + +fz_error * +fz_newpointer(fz_obj **op, void *p) +{ + NEWOBJ(FZ_POINTER, sizeof (fz_obj)); + o->u.p = p; + return nil; +} + +fz_obj * +fz_keepobj(fz_obj *o) +{ + assert(o != nil); + o->refs ++; + return o; +} + +void +fz_dropobj(fz_obj *o) +{ + assert(o != nil); + if (--o->refs == 0) + { + if (o->kind == FZ_ARRAY) + fz_droparray(o); + else if (o->kind == FZ_DICT) + fz_dropdict(o); + else + fz_free(o); + } +} + +int +fz_isnull(fz_obj *obj) +{ + return obj ? obj->kind == FZ_NULL : 0; +} + +int +fz_isbool(fz_obj *obj) +{ + return obj ? obj->kind == FZ_BOOL : 0; +} + +int +fz_isint(fz_obj *obj) +{ + return obj ? obj->kind == FZ_INT : 0; +} + +int +fz_isreal(fz_obj *obj) +{ + return obj ? obj->kind == FZ_REAL : 0; +} + +int +fz_isstring(fz_obj *obj) +{ + return obj ? obj->kind == FZ_STRING : 0; +} + +int +fz_isname(fz_obj *obj) +{ + return obj ? obj->kind == FZ_NAME : 0; +} + +int +fz_isarray(fz_obj *obj) +{ + return obj ? obj->kind == FZ_ARRAY : 0; +} + +int +fz_isdict(fz_obj *obj) +{ + return obj ? obj->kind == FZ_DICT : 0; +} + +int +fz_isindirect(fz_obj *obj) +{ + return obj ? obj->kind == FZ_INDIRECT : 0; +} + +int +fz_ispointer(fz_obj *obj) +{ + return obj ? obj->kind == FZ_POINTER : 0; +} + +int +fz_tobool(fz_obj *obj) +{ + if (fz_isbool(obj)) + return obj->u.b; + return 0; +} + +int +fz_toint(fz_obj *obj) +{ + if (fz_isint(obj)) + return obj->u.i; + if (fz_isreal(obj)) + return obj->u.f; + return 0; +} + +float +fz_toreal(fz_obj *obj) +{ + if (fz_isreal(obj)) + return obj->u.f; + if (fz_isint(obj)) + return obj->u.i; + return 0; +} + +char * +fz_toname(fz_obj *obj) +{ + if (fz_isname(obj)) + return obj->u.n; + return ""; +} + +char * +fz_tostrbuf(fz_obj *obj) +{ + if (fz_isstring(obj)) + return obj->u.s.buf; + return ""; +} + +int +fz_tostrlen(fz_obj *obj) +{ + if (fz_isstring(obj)) + return obj->u.s.len; + return 0; +} + +int +fz_tonum(fz_obj *obj) +{ + if (fz_isindirect(obj)) + return obj->u.r.oid; + return 0; +} + +int +fz_togen(fz_obj *obj) +{ + if (fz_isindirect(obj)) + return obj->u.r.gid; + return 0; +} + +void * +fz_topointer(fz_obj *obj) +{ + if (fz_ispointer(obj)) + return obj->u.p; + return nil; +} + +fz_error * +fz_newnamefromstring(fz_obj **op, fz_obj *str) +{ + NEWOBJ(FZ_NAME, offsetof(fz_obj, u.n) + fz_tostrlen(str) + 1); + memcpy(o->u.n, fz_tostrbuf(str), fz_tostrlen(str)); + o->u.n[fz_tostrlen(str)] = '\0'; + return nil; +} + +int +fz_objcmp(fz_obj *a, fz_obj *b) +{ + int i; + + if (a == b) + return 0; + if (a->kind != b->kind) + return 1; + + switch (a->kind) + { + case FZ_NULL: return 0; + case FZ_BOOL: return a->u.b - b->u.b; + case FZ_INT: return a->u.i - b->u.i; + case FZ_REAL: return a->u.f - b->u.f; + case FZ_STRING: + if (a->u.s.len != b->u.s.len) + return a->u.s.len - b->u.s.len; + return memcmp(a->u.s.buf, b->u.s.buf, a->u.s.len); + case FZ_NAME: + return strcmp(a->u.n, b->u.n); + + case FZ_INDIRECT: + if (a->u.r.oid == b->u.r.oid) + return a->u.r.gid - b->u.r.gid; + return a->u.r.oid - b->u.r.oid; + + case FZ_ARRAY: + if (a->u.a.len != b->u.a.len) + return a->u.a.len - b->u.a.len; + for (i = 0; i < a->u.a.len; i++) + if (fz_objcmp(a->u.a.items[i], b->u.a.items[i])) + return 1; + return 0; + + case FZ_DICT: + if (a->u.d.len != b->u.d.len) + return a->u.d.len - b->u.d.len; + for (i = 0; i < a->u.d.len; i++) + { + if (fz_objcmp(a->u.d.items[i].k, b->u.d.items[i].k)) + return 1; + if (fz_objcmp(a->u.d.items[i].v, b->u.d.items[i].v)) + return 1; + } + return 0; + } + return 1; +} + |