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      Copyright (C) 2004, 2005 Stephen Bach
      This file is part of the Viewglob package.

      Viewglob 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.

      Viewglob is distributed in the hope that it will be useful,
      but WITHOUT ANY WARRANTY; without even the implied warranty of
      GNU General Public License for more details.

      You should have received a copy of the GNU General Public License
      along with Viewglob; if not, write to the Free Software
      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


#include "shell.h"


/* Status of a match attempt. */
typedef enum _MatchStatus MatchStatus;
enum _MatchStatus {
      MS_NO_MATCH     = 1 << 0,
      MS_IN_PROGRESS  = 1 << 1,
      MS_MATCH        = 1 << 2,

enum process_level {
      PL_TERMINAL,     /* For the terminal. */
      PL_AT_PROMPT,    /* When user is typing away. */
      PL_EXECUTING,    /* When a command is executing. */
      PL_AT_RPROMPT,   /* When the zsh RPROMPT is being printed. */
      PL_VIEWGLOB,     /* User typed Ctrl-G. */

typedef struct _Connection Connection;
struct _Connection {
      gchar* name;
      gint fd_in;
      gint fd_out;
      gchar* buf;             /* Read/write buffer. */
      gsize size;
      gsize filled;           /* The amount of the buffer that is actually
                                 filled. */
      gsize pos;              /* The offset of the segment being examined. */
      gsize seglen;           /* Length of the examined segment. */
      enum process_level pl;  /* Processing level of the buffer. */
      MatchStatus status;     /* Result of the last check_seqs() attempt. */
      gchar* holdover;        /* Segment leftover from the last read. */
      gboolean ho_written;    /* The holdover was written already (and thus
                                 should be skipped. */
      gsize skip;             /* Number of bytes to skip writing (already
                                 written). */
      enum shell_status ss;

void connection_init(Connection* cnct, gchar* name, gint fd_in, gint fd_out,
            gchar* buf, gsize buflen, enum process_level pl);
void connection_free(Connection* cnct);
void prepend_holdover(Connection* b);
void create_holdover(Connection* b, gboolean write_later);
void eat_segment(Connection* b);
void pass_segment(Connection* b);
gboolean connection_read(Connection* cnct);
gboolean connection_write(Connection* cnct);


#endif /* !CONNECTION_H */

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