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/* $Header$
This is dvipdfm, a DVI to PDF translator.
Copyright (C) 1998, 1999 by Mark A. Wicks
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
The author may be contacted via the e-mail address
mwicks@kettering.edu
*/
#ifndef PDFOBJ_H
#define PDFOBJ_H
#include <stdio.h>
/* Here is the complete list of PDF object types */
#define PDF_BOOLEAN 1u
#define PDF_NUMBER 2u
#define PDF_STRING 3u
#define PDF_NAME 4u
#define PDF_ARRAY 5u
#define PDF_DICT 6u
#define PDF_STREAM 7u
#define PDF_NULL 8u
#define PDF_INDIRECT 9u
typedef unsigned char pdf_obj_type;
/* Any of these types can be represented as follows */
struct pdf_obj
{
pdf_obj_type type;
void *data;
unsigned long label; /* Only used for indirect objects
all other "label" to zero */
unsigned generation; /* Only used if "label" is used */
unsigned refcount; /* Number of links to this object */
};
typedef struct pdf_obj pdf_obj;
struct pdf_boolean
{
char value;
};
typedef struct pdf_boolean pdf_boolean;
struct pdf_number
{
double value;
};
typedef struct pdf_number pdf_number;
struct pdf_string
{
unsigned char *string;
unsigned length;
};
typedef struct pdf_string pdf_string;
struct pdf_name
{
char *name;
};
typedef struct pdf_name pdf_name;
struct pdf_array
{
unsigned long max, size;
pdf_obj **values;
};
typedef struct pdf_array pdf_array;
struct pdf_dict
{
pdf_obj *key;
pdf_obj *value;
struct pdf_dict *next;
};
typedef struct pdf_dict pdf_dict;
struct pdf_stream
{
struct pdf_obj *dict;
char *stream; /* Actual stream contents stored in "stream" */
unsigned long stream_length;
unsigned long max_length;
unsigned char _flags;
};
typedef struct pdf_stream pdf_stream;
struct pdf_indirect
{
unsigned label, generation;
int dirty; /* Dirty objects came from an input file and were not
generated by this program. They have a label in a
different numbering sequence. These are translated
when the object is written out */
FILE *dirty_file;
};
typedef struct pdf_indirect pdf_indirect;
/* External interface to pdf routines */
extern void pdf_obj_set_verbose(void);
struct pdf_obj *pdf_new_obj (pdf_obj_type type);
extern void pdf_out_init (const char *filename);
extern void pdf_out_flush (void);
extern pdf_obj *pdf_new_obj(pdf_obj_type type);
extern pdf_obj *pdf_link_obj(pdf_obj *object);
extern pdf_obj *pdf_new_null (void);
extern pdf_obj *pdf_new_boolean (char value);
extern void pdf_set_boolean (pdf_obj *object, char value);
extern void pdf_set_info (pdf_obj *object);
extern void pdf_set_root (pdf_obj *object);
extern pdf_obj *pdf_new_number (double value);
extern void pdf_set_number (pdf_obj *object, double value);
extern double pdf_number_value (pdf_obj *number);
extern char *pdf_name_value (pdf_obj *object);
extern pdf_obj *pdf_new_string (const void *string, unsigned length);
extern void pdf_set_string (pdf_obj *object, unsigned char *string, unsigned length);
extern void *pdf_string_value (pdf_obj *object);
extern unsigned int pdf_string_length (pdf_obj *object);
#define pdf_obj_string_value(s) ((void *)(((pdf_string *)((s)->data)) -> string))
#define pdf_obj_string_length(s) (((pdf_string *)((s)->data)) -> length)
extern pdf_obj *pdf_new_name (const char *name); /* Name does not include the / */
extern int pdf_check_name (const char *name); /* Tell whether name is a
valid PDF name */
extern pdf_obj *pdf_new_array (void);
extern void pdf_add_array (pdf_obj *array, pdf_obj *object); /* Array is ended
by a node with NULL
this pointer */
extern pdf_obj *pdf_get_array (pdf_obj *array, unsigned long index);
extern pdf_obj *pdf_new_dict (void);
extern void pdf_add_dict (pdf_obj *dict, pdf_obj *key, pdf_obj *value); /* Array is ended
by a node with NULL
this pointer */
extern void pdf_merge_dict (pdf_obj *dict1, pdf_obj *dict2);
extern pdf_obj *pdf_lookup_dict (const pdf_obj *dict, const char *name);
extern char *pdf_get_dict (const pdf_obj *dict, int index);
extern pdf_obj *pdf_new_stream (int flags);
#define STREAM_COMPRESS 1
extern void pdf_obj_set_compression(int level);
extern void pdf_add_stream (pdf_obj *stream, char *stream_data, unsigned
length);
extern pdf_obj *pdf_stream_dict(pdf_obj *stream);
extern void pdf_release_obj (pdf_obj *object);
extern pdf_obj *pdf_deref_obj (pdf_obj *object);
extern pdf_obj *pdf_ref_obj (pdf_obj *object);
extern pdf_obj *pdf_new_ref (unsigned long label, int generation);
extern pdf_obj *pdf_ref_file_obj (unsigned long obj_no);
extern void pdf_write_obj (FILE *file, const pdf_obj *object);
extern pdf_obj *pdf_open (FILE *file);
extern void pdf_close (void);
extern int pdfobj_escape_str (char *buffer, int size, unsigned char
*s, int len, int remap);
extern int check_for_pdf (FILE *file);
extern void pdf_set_version (unsigned version);
extern pdf_obj *pdf_read_object (unsigned long obj_no);
extern void pdf_error_cleanup(void);
#endif /* PDFOBJ_H */
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