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#ifndef PDF_INTERPRET_IMP_H
#define PDF_INTERPRET_IMP_H
#include "mupdf/pdf.h"
typedef struct pdf_csi_s pdf_csi;
typedef struct pdf_gstate_s pdf_gstate;
typedef void (*pdf_operator_fn)(pdf_csi *, void *user);
typedef void (*pdf_process_annot_fn)(pdf_csi *csi, void *user, pdf_obj *resources, pdf_annot *annot);
typedef void (*pdf_process_stream_fn)(pdf_csi *csi, void *user, pdf_lexbuf *buf);
typedef void (*pdf_process_contents_fn)(pdf_csi *csi, void *user, pdf_obj *resources, pdf_obj *contents);
typedef enum {
/* The first section of op's all run without a try/catch */
PDF_OP_dquote,
PDF_OP_squote,
PDF_OP_B,
PDF_OP_Bstar,
PDF_OP_BDC,
PDF_OP_BI,
PDF_OP_BMC,
PDF_OP_BT,
PDF_OP_BX,
PDF_OP_CS,
PDF_OP_DP,
PDF_OP_EMC,
PDF_OP_ET,
PDF_OP_EX,
PDF_OP_F,
PDF_OP_G,
PDF_OP_J,
PDF_OP_K,
PDF_OP_M,
PDF_OP_MP,
PDF_OP_Q,
PDF_OP_RG,
PDF_OP_S,
PDF_OP_SC,
PDF_OP_SCN,
PDF_OP_Tstar,
PDF_OP_TD,
PDF_OP_TJ,
PDF_OP_TL,
PDF_OP_Tc,
PDF_OP_Td,
PDF_OP_Tj,
PDF_OP_Tm,
PDF_OP_Tr,
PDF_OP_Ts,
PDF_OP_Tw,
PDF_OP_Tz,
PDF_OP_W,
PDF_OP_Wstar,
PDF_OP_b,
PDF_OP_bstar,
PDF_OP_c,
PDF_OP_cm,
PDF_OP_cs,
PDF_OP_d,
PDF_OP_d0,
PDF_OP_d1,
PDF_OP_f,
PDF_OP_fstar,
PDF_OP_g,
PDF_OP_h,
PDF_OP_i,
PDF_OP_j,
PDF_OP_k,
PDF_OP_l,
PDF_OP_m,
PDF_OP_n,
PDF_OP_q,
PDF_OP_re,
PDF_OP_rg,
PDF_OP_ri,
PDF_OP_s,
PDF_OP_sc,
PDF_OP_scn,
PDF_OP_v,
PDF_OP_w,
PDF_OP_y,
/* ops in this second section require additional try/catch handling */
PDF_OP_Do,
PDF_OP_Tf,
PDF_OP_gs,
PDF_OP_sh,
/* END is used to signify end of stream (finalise and close down) */
PDF_OP_END,
/* And finally we have a max */
PDF_OP_MAX
} PDF_OP;
typedef struct pdf_processor_s {
pdf_operator_fn op_table[PDF_OP_MAX];
pdf_process_annot_fn process_annot;
pdf_process_stream_fn process_stream;
pdf_process_contents_fn process_contents;
} pdf_processor;
typedef struct pdf_process_s
{
const pdf_processor *processor;
void *state;
} pdf_process;
struct pdf_csi_s
{
fz_context *ctx;
pdf_document *doc;
/* Current resource dict and file. These are in here to reduce param
* passing. */
pdf_obj *rdb;
fz_stream *file;
/* Operator table */
pdf_process process;
/* interpreter stack */
pdf_obj *obj;
char name[256];
unsigned char string[256];
int string_len;
float stack[32];
int top;
fz_image *img;
int xbalance;
int in_text;
/* cookie support */
fz_cookie *cookie;
};
static inline void pdf_process_op(pdf_csi *csi, int op, const pdf_process *process)
{
process->processor->op_table[op](csi, process->state);
}
/* Helper functions for the filter implementations to call */
void pdf_process_contents_object(pdf_csi *csi, pdf_obj *rdb, pdf_obj *contents);
void pdf_process_stream(pdf_csi *csi, pdf_lexbuf *buf);
/* Functions to set up pdf_process structures */
pdf_process *pdf_init_process_run(fz_context *ctx, pdf_process *process, fz_device *dev, const fz_matrix *ctm, const char *event, pdf_gstate *gstate, int nested);
pdf_process *pdf_init_process_buffer(fz_context *ctx, pdf_process *process, fz_buffer *buffer);
pdf_process *pdf_init_process_filter(fz_context *ctx, pdf_process *process, pdf_process *underlying, pdf_obj *resources);
/* Functions to actually use the pdf_process structures to process
* annotations, glyphs and general stream objects */
void pdf_process_annot(fz_context *ctx, pdf_document *doc, pdf_page *page, pdf_annot *annot, const pdf_process *process, fz_cookie *cookie);
void pdf_process_glyph(fz_context *ctx, pdf_document *doc, pdf_obj *resources, fz_buffer *contents, pdf_process *process);
void pdf_process_stream_object(fz_context *ctx, pdf_document *doc, pdf_obj *obj, const pdf_process *process, pdf_obj *res, fz_cookie *cookie);
#endif
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