1 files changed, 98 insertions, 0 deletions
diff --git a/src/cos_object.h b/src/cos_object.h
new file mode 100644
index 0000000..65b3ed5
--- /dev/null
+++ b/src/cos_object.h
@@ -0,0 +1,98 @@
+struct pdf_doc;
+
+enum cos_type {
+    COS_TYPE_NULL,
+    COS_TYPE_BOOL,
+    COS_TYPE_INT,
+    COS_TYPE_REAL,
+    COS_TYPE_NAME,
+    COS_TYPE_STRING,
+    COS_TYPE_ARRAY,
+    COS_TYPE_DICTIONARY,
+    COS_TYPE_NAMETREE,
+    COS_TYPE_NUMBERTREE,
+    COS_TYPE_STREAM,
+    COS_TYPE_REFERENCE,
+};
+
+struct cos_object;
+
+struct cos_dictionary_entry {
+    /** next key/value in dictionary */
+    struct cos_dictionary_entry *next;
+
+    /** key (name) */
+    struct cos_object *key;
+
+    /** value */
+    struct cos_object *value;
+};
+
+struct cos_array_entry {
+    /** next value in array */
+    struct cos_array_entry *next;
+
+    /** value */
+    struct cos_object *value;
+};
+
+struct cos_string {
+    uint8_t *data;
+    size_t length;
+    size_t alloc;
+};
+
+struct cos_reference {
+    /** id of indirect object */
+    uint64_t id;
+
+    /* generation of indirect object */
+    uint64_t generation;
+};
+
+struct cos_object {
+    int type;
+    union {
+        /** boolean */
+        bool b;
+
+        /** integer */
+        int64_t i;
+
+        /** real */
+        double r;
+
+        /** name */
+        char *n;
+
+        /** string */
+        struct cos_string *s;
+
+        /** stream data */
+        uint8_t *stream;
+
+        /* dictionary */
+        struct cos_dictionary_entry *dictionary;
+
+        /* array */
+        struct cos_array_entry *array;
+
+        /** reference */
+        struct cos_reference *reference;
+
+    } u;
+};
+
+int cos_decode_object(struct pdf_doc *doc, uint64_t *offset_out, struct cos_object **cosobj_out);
+
+nspdferror cos_free_object(struct cos_object *cos_obj);
+
+nspdferror cos_dictionary_get_value(struct cos_object *dict, const char *key, struct cos_object **value_out);
+
+nspdferror cos_dictionary_extract_value(struct cos_object *dict, const char *key, struct cos_object **value_out);
+
+nspdferror cos_get_int(struct cos_object *cobj, int64_t *value_out);
+
+nspdferror cos_get_dictionary(struct cos_object *cobj, struct cos_object **value_out);
+
+