101 lines
2.1 KiB
C
101 lines
2.1 KiB
C
#include "mupdf/fitz.h"
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#include "mupdf/pdf.h"
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#include <assert.h>
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static int
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pdf_make_hash_key(fz_context *ctx, fz_store_hash *hash, void *key_)
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{
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pdf_obj *key = (pdf_obj *)key_;
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if (!pdf_is_indirect(ctx, key))
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return 0;
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hash->u.pi.i = pdf_to_num(ctx, key);
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hash->u.pi.ptr = pdf_get_indirect_document(ctx, key);
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return 1;
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}
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static void *
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pdf_keep_key(fz_context *ctx, void *key)
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{
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return (void *)pdf_keep_obj(ctx, (pdf_obj *)key);
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}
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static void
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pdf_drop_key(fz_context *ctx, void *key)
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{
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pdf_drop_obj(ctx, (pdf_obj *)key);
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}
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static int
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pdf_cmp_key(fz_context *ctx, void *k0, void *k1)
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{
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return pdf_objcmp(ctx, (pdf_obj *)k0, (pdf_obj *)k1);
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}
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static void
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pdf_format_key(fz_context *ctx, char *s, int n, void *key_)
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{
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pdf_obj *key = (pdf_obj *)key_;
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if (pdf_is_indirect(ctx, key))
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fz_snprintf(s, n, "(%d 0 R)", pdf_to_num(ctx, key));
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else
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{
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int t;
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char *p = pdf_sprint_obj(ctx, s, n, &t, key, 1, 0);
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if (p != s) {
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fz_strlcpy(s, p, n);
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fz_free(ctx, p);
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}
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}
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}
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static const fz_store_type pdf_obj_store_type =
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{
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pdf_make_hash_key,
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pdf_keep_key,
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pdf_drop_key,
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pdf_cmp_key,
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pdf_format_key,
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NULL
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};
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void
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pdf_store_item(fz_context *ctx, pdf_obj *key, void *val, size_t itemsize)
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{
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void *existing;
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assert(pdf_is_name(ctx, key) || pdf_is_array(ctx, key) || pdf_is_dict(ctx, key) || pdf_is_indirect(ctx, key));
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existing = fz_store_item(ctx, key, val, itemsize, &pdf_obj_store_type);
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assert(existing == NULL);
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(void)existing; /* Silence warning in release builds */
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}
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void *
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pdf_find_item(fz_context *ctx, fz_store_drop_fn *drop, pdf_obj *key)
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{
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return fz_find_item(ctx, drop, key, &pdf_obj_store_type);
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}
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void
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pdf_remove_item(fz_context *ctx, fz_store_drop_fn *drop, pdf_obj *key)
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{
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fz_remove_item(ctx, drop, key, &pdf_obj_store_type);
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}
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static int
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pdf_filter_store(fz_context *ctx, void *doc_, void *key)
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{
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pdf_document *doc = (pdf_document *)doc_;
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pdf_obj *obj = (pdf_obj *)key;
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pdf_document *key_doc = pdf_get_bound_document(ctx, obj);
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return (doc == key_doc);
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}
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void
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pdf_empty_store(fz_context *ctx, pdf_document *doc)
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{
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fz_filter_store(ctx, pdf_filter_store, doc, &pdf_obj_store_type);
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}
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