src/view.h

   1 #ifndef __VIEW_H
   2 #define __VIEW_H
   3
   4 #ifdef WANT_WIDGETS
   5 /* The growing buffers data types */
   6 typedef struct {
   7     unsigned char *data;
   8     int  present;               /* Unused, for DOS port maybe */
   9 } block_ptr_t;
  10
  11 enum ViewSide {
  12     view_side_left,
  13     view_side_right
  14 };
  15
  16 typedef struct {
  17     Widget widget;
  18
  19     char *filename;             /* Name of the file */
  20     char *command;              /* Command used to pipe data in */
  21     char *localcopy;
  22     int view_active;
  23     int have_frame;
  24
  25     unsigned char *data;        /* Memory area for the file to be viewed */
  26
  27     /* File information */
  28     int file;                   /* File descriptor (for mmap and munmap) */
  29     FILE *stdfile;              /* Stdio struct for reading file in parts */
  30     int reading_pipe;           /* Flag: Reading from pipe(use popen/pclose) */
  31     unsigned long bytes_read;   /* How much of file is read */
  32     int mmapping;               /* Did we use mmap on the file? */
  33
  34     /* Display information */
  35     unsigned long last;         /* Last byte shown */
  36     unsigned long last_byte;    /* Last byte of file */
  37     long first;                 /* First byte in file */
  38     long bottom_first;  /* First byte shown when very last page is displayed */
  39                                 /* For the case of WINCH we should reset it to -1 */
  40     unsigned long start_display;/* First char displayed */
  41     int  start_col;             /* First displayed column, negative */
  42     unsigned long edit_cursor;  /* HexEdit cursor position in file */
  43     char hexedit_mode;          /* Hexidecimal editing mode flag */
  44     char nib_shift;             /* A flag for inserting nibbles into bytes */
  45     enum ViewSide view_side;    /* A flag for the active editing panel */
  46     int  file_dirty;            /* Number of changes */
  47     int  start_save;            /* Line start shift between Ascii and Hex */
  48     int  cursor_col;            /* Cursor column */
  49     int  cursor_row;            /* Cursor row */
  50     struct hexedit_change_node *change_list;   /* Linked list of changes */
  51
  52     int dirty;                  /* Number of skipped updates */
  53     int wrap_mode;              /* wrap_mode */
  54
  55     /* Mode variables */
  56     int hex_mode;               /* Hexadecimal mode flag */
  57     int bytes_per_line;         /* Number of bytes per line in hex mode */
  58     int viewer_magic_flag;      /* Selected viewer */
  59     int viewer_nroff_flag;      /* Do we do nroff style highlighting? */
  60
  61     /* Growing buffers information */
  62     int growing_buffer;         /* Use the growing buffers? */
  63     block_ptr_t *block_ptr;     /* Pointer to the block pointers */
  64     int          blocks;        /* The number of blocks in *block_ptr */
  65
  66
  67     /* Search variables */
  68     int search_start;           /* First character to start searching from */
  69     int found_len;              /* Length of found string or 0 if none was found */
  70     char *search_exp;           /* The search expression */
  71     int  direction;             /* 1= forward; -1 backward */
  72     void (*last_search)(void *, char *);
  73                                 /* Pointer to the last search command */
  74     int view_quit;              /* Quit flag */
  75
  76     int monitor;                /* Monitor file growth (like tail -f) */
  77     /* Markers */
  78     int marker;                 /* mark to use */
  79     int marks [10];             /* 10 marks: 0..9 */
  80
  81
  82     int  move_dir;              /* return value from widget:
  83                                  * 0 do nothing
  84                                  * -1 view previous file
  85                                  * 1 view next file
  86                                  */
  87     struct stat s;              /* stat for file */
  88 } WView;
  89
  90 #define vwidth (view->widget.cols - (view->have_frame ? 2 : 0))
  91 #define vheight (view->widget.lines - (view->have_frame ? 2 : 0))
  92
  93 /* Creation/initialization of a new view widget */
  94 WView *view_new (int y, int x, int cols, int lines, int is_panel);
  95 int view_init (WView *view, char *_command, const char *_file, int start_line);
  96 void view_update_bytes_per_line(WView *view);
  97 int view_file (char *filename, int normal, int internal);
  98
  99 #endif /* WANT_WIDGETS */
 100
 101 /* Command: view a file, if _command != NULL we use popen on _command */
 102 /* move direction should be apointer that will hold the direction in which the user */
 103 /* wants to move (-1 previous file, 1 next file, 0 do nothing) */
 104 int view (char *_command, const char *_file, int *move_direction, int start_line);
 105
 106 extern int mouse_move_pages_viewer;
 107 extern int max_dirt_limit;
 108 extern int global_wrap_mode;
 109 extern int have_fast_cpu;
 110 extern int default_hex_mode;
 111 extern int default_magic_flag;
 112 extern int default_nroff_flag;
 113 extern int altered_hex_mode;
 114 extern int altered_magic_flag;
 115 extern int altered_nroff_flag;
 116 extern Dlg_head *view_dlg;
 117
 118 void view_adjust_size (Dlg_head *);
 119
 120 /* A node for building a change list on change_list */
 121 struct hexedit_change_node {
 122    struct hexedit_change_node *next;
 123    long                       offset;
 124    unsigned char              value;
 125 };
 126
 127 #endif  /* __VIEW_H */