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#ifndef WP_SCANNER_LOGIC_H
#define WP_SCANNER_LOGIC_H

#include "wp_file_format.h"
#include "wp_layout_shared.h"
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

typedef struct WpScannerOptions {
    bool copy_text_bytes;
    bool copy_format_packets;
    bool normalize_space_hyphen;
    bool emit_line_controls;
} WpScannerOptions;

typedef struct WpScannerStats {
    size_t records_seen;
    size_t bytes_consumed;
    size_t text_bytes_seen;
    size_t text_bytes_copied;
    size_t variable_packets_seen;
    size_t variable_packets_copied;
    size_t variable_packets_skipped;
    size_t fixed_packets_copied;
    size_t fixed_packets_skipped;
    size_t control_codes_seen;
    size_t dormant_controls_seen;
    size_t whitespace_gate_controls;
    size_t render_dirty_gate_controls;
    size_t dirty_neutral_controls;
    size_t extension_scan_stop_controls;
    size_t line_controls_emitted;
    size_t scanner_normalized_space;
    size_t scanner_normalized_hyphen;
    
    size_t c0_extended_packets;
    size_t c1_fixed_packets;
    size_t c2_fixed_packets;
    size_t c3_fixed_packets;
    size_t c4_fixed_packets;
    size_t c5_fixed_packets;
    size_t c6_fixed_packets;
    size_t other_fixed_packets;
    
    size_t d0_initial_format_tables;
    size_t d0_format_table_words;
    size_t d0_format_table_groups;
    size_t d0_format_table_sentinels;
    size_t d0_format_table_nonmonotonic_steps;
    uint16_t d0_format_table_first_step;
    uint16_t d0_format_table_max_value;
    
    size_t d4_command_packets;
    size_t d4_layout_state_packets;
    size_t d4_layout_state_payload_bytes;
    int d4_layout_state_max_carry_width;
    uint16_t d4_layout_state_max_wrap_value;
    size_t d4_variant_snapshot_packets;
    size_t d4_extension_block_packets;
    size_t d4_extension_blocks;
    size_t d4_extension_bytes;
    
    size_t d4_pending_span_packets;
    size_t d4_pending_span_payload_bytes;
    uint16_t d4_pending_span_max_span_a;
    uint16_t d4_pending_span_max_span_b;
    int d4_pending_span_max_carry_width;
    
    size_t d4_line_window_packets;
    size_t d4_line_window_payload_bytes;
    size_t d4_line_window_extension_packets;
    size_t d4_line_window_extension_bytes;
    uint16_t d4_line_window_max_old_extent;
    uint16_t d4_line_window_max_new_extent;
    
    size_t d4_line_metric_packets;
    size_t d4_line_metric_payload_bytes;
    uint16_t d4_line_metric_max_position;
    uint16_t d4_line_metric_max_extent;
    size_t d4_line_metric_extension_packets;
    size_t d4_line_metric_extension_bytes;
    
    size_t d4_extension_fragment_packets;
    size_t d4_extension_fragment_bytes;
    size_t d4_extension_fragment_block_records;
    size_t d4_extension_fragment_block_bytes;
    
    size_t d4_line_build_checkpoint_packets;
    uint16_t d4_line_build_checkpoint_max_word;
    
    size_t d5_repeat_packets;
    size_t d6_repeat_packets;
    size_t variable_nested_stream_hints;
    size_t de31_scanner_bypass_packets;
    
    size_t nested_streams_analyzed;
    size_t nested_stream_records;
    size_t nested_stream_bytes;
    size_t nested_stream_fixed_codes;
    size_t nested_stream_variable_codes;
    size_t nested_stream_char_records;
    size_t nested_stream_d4_layout_states;
    size_t nested_stream_post_compare_packets;
    size_t nested_stream_repeat_total;
    size_t nested_stream_max_depth;
    bool nested_stream_recursion_limit_hit;
    bool nested_stream_parse_gap;
    
    size_t variable_repeat_dispatch_packets;
    size_t variable_repeat_total;
    size_t variable_extension_scan_packets;
    size_t variable_refcount_increment_packets;
    size_t variable_refcount_decrement_packets;
    
    size_t bytes_written;
    size_t incomplete_records;
    size_t mismatched_trailers;
    bool output_truncated;
} WpScannerStats;

void wp_scanner_default_options(WpScannerOptions *options);
void wp_scanner_stats_clear(WpScannerStats *stats);

bool wp_scanner_run_stream(WpLayoutGlobals *wl,
                           uint8_t *out,
                           size_t out_capacity,
                           size_t *out_len,
                           const WpScannerOptions *options,
                           WpScannerStats *stats);

bool wp_scanner_run_loaded_file(WpLoadedFile *file,
                                uint8_t *out,
                                size_t out_capacity,
                                size_t *out_len,
                                const WpScannerOptions *options,
                                WpScannerStats *stats);

bool wp_scanner_run_file(const char *filename,
                         uint8_t *out,
                         size_t out_capacity,
                         size_t *out_len,
                         const WpScannerOptions *options,
                         WpScannerStats *stats);

/* Host-safe ports of the Segment 3000 Scanner / Firmware IO logic. */

void __cdecl16near layout_clear_firmware_flag_b113_bit1(WpLayoutGlobals *wl);
void __cdecl16near layout_flip_dos_char_sign_and_dos_service_hooks(WpLayoutGlobals *wl);
void __cdecl16near firmware_io_prepare_then_transfer_step(WpLayoutGlobals *wl, uint16_t *unaff_DI);
uint16_t __cdecl16near firmware_io_word_transfer_step(WpLayoutGlobals *wl, uint16_t *unaff_DI, int in_CX);

#endif
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