main.h

   1 #define LINE_SIZE  1024
   2
   3 #define LENGTH(x) (sizeof(x) / sizeof(*x))
   4 #define CONTROL(char) (char ^ 0x40)
   5 #define MIN(X, Y) (((X) < (Y)) ? (X) : (Y))
   6 #define MAX(X, Y) (((X) > (Y)) ? (X) : (Y))
   7
   8
   9 enum { FALSE = 0, TRUE = 1, EXIT = 2 };
  10 enum { NEXT = 0, PREV = 1, BOTH = 2 };
  11
  12
  13 /*
  14  * Options from the command line, to pass to each function that need some
  15  */
  16 typedef struct Opt {
  17         int   line_numbers;
  18         int   complete;
  19         int   print_numbers;
  20         char  validate_key;
  21         char *separator;
  22         int   lines;
  23         char *prompt;
  24 } Opt;
  25
  26
  27 /*
  28  * Line coming from stdin, wrapped in a header.
  29  */
  30 typedef struct Line {
  31         char *content;               /* sent as output and matched by input */
  32         char *comment;               /* displayed at the right of the content */
  33
  34         int  number;                 /* set here as order will not change */
  35         int  matches;                /* whether it matches buffer's input */
  36         int  header;                 /* whether the line is a header */
  37
  38         struct Line *prev;           /* doubly linked list structure */
  39         struct Line *next;
  40 } Line;
  41
  42
  43 /*
  44  * Buffer containing a doubly linked list of headers
  45  */
  46 typedef struct Buffer {
  47         int total;                   /* total number of line in buffer */
  48         int matching;                /* number lines matching the input */
  49
  50         char    input[LINE_SIZE];    /* string from user's keyboard */
  51         char   *prompt;              /* specified from the command line */
  52
  53         Line   *empty;               /* empty line, for when needed */
  54         Line   *current;             /* selected line, highlighted */
  55         Line   *first;               /* boundaries of the linked list */
  56         Line   *last;
  57 } Buffer;
  58
  59
  60 /* buffer */
  61
  62 Buffer * fill_buffer(char *);
  63 void     free_buffer(Buffer *);
  64 void     free_line(Line *);
  65 Line   * add_line(Buffer *, int, char *, char *, Line *);
  66 Line   * parse_line(char *, char *);
  67 Line   * matching_next(Line *);
  68 Line   * matching_prev(Line *);
  69 int      line_match_input(Line *, char *, Opt *);
  70 void     filter_lines(Buffer *, Opt *);
  71
  72
  73 /* draw */
  74
  75 void     draw_screen(Buffer *, int, int, Opt *);
  76 void     draw_clear(int);
  77 void     draw_line(Line *, int, int, Opt *);
  78 void     draw_lines(Buffer *, int, int, int, Opt *);
  79 void     draw_prompt(Buffer *, int, Opt *);
  80
  81
  82 /* input */
  83
  84 void     input_get(Buffer *, int, int, Opt *);
  85 int      input_key(char, Buffer *, Opt *);
  86 void     action_jump(Buffer *, int, Opt *);
  87 void     action_print_selection(Buffer *, Opt *);
  88 void     action_remove_word_input(Buffer *);
  89 void     action_add_character(Buffer *, char, Opt *);
  90
  91
  92 /* util */
  93
  94 void             die(const char *);
  95 struct termios   set_terminal(int);
  96 char           * expand_tabs(char *);