ui-cli.c

   1 /*
   2  * Copyright (c) 2016, S. Gilles <sgilles@math.umd.edu>
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software
   5  * for any purpose with or without fee is hereby granted, provided
   6  * that the above copyright notice and this permission notice appear
   7  * in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
  10  * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
  11  * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
  12  * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
  13  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
  14  * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
  15  * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  16  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 #include <errno.h>
  19 #include <stdint.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22
  23 #include "macros.h"
  24 #include "quiver.h"
  25 #include "ui.h"
  26
  27 /* Whether we actually need to draw this frame or not */
  28 static uint_fast8_t need_to_draw = 1;
  29
  30 /* The quiver */
  31 struct quiver *q;
  32
  33 /* The event we'll give back */
  34 static struct ui_event pass_back = { 0 };
  35
  36 /* Intialize CLI */
  37 int ui_init(struct quiver *i_q)
  38 {
  39         q = i_q;
  40
  41         return 0;
  42 }
  43
  44 /* Deal with the fact that the quiver was changed */
  45 int ui_respond_quiver_change(void)
  46 {
  47         return 0;
  48 }
  49
  50 /* Tear down CLI */
  51 int ui_teardown(void)
  52 {
  53         return 0;
  54 }
  55
  56 /* Record that a frame has been started */
  57 int ui_start_frame(void)
  58 {
  59         return 0;
  60 }
  61
  62 /* Draw a frame, sleep to framelimit */
  63 int ui_finish_frame(void)
  64 {
  65         size_t i = 0;
  66         size_t j = 0;
  67         struct rational *e = 0;
  68         size_t line_length = 0;
  69
  70         if (!need_to_draw) {
  71                 return 0;
  72         }
  73
  74         printf("%*s| Name\n----------\n", 4, "i");
  75
  76         for (j = 0; j < q->v_num; ++j) {
  77                 printf("%*llu | %s\n", 4, (long long unsigned) j, q->v[j].name);
  78         }
  79
  80         line_length = printf("%*s| ", 4, "i\\j");
  81
  82         for (j = 0; j < q->v_num; ++j) {
  83                 line_length += printf("%*llu", 5, (long long unsigned) j);
  84         }
  85
  86         putchar('\n');
  87
  88         for (j = 0; j < line_length; ++j) {
  89                 putchar('-');
  90         }
  91
  92         for (i = 0; i < q->v_num; ++i) {
  93                 printf("\n %*llu| ", 3, (long long unsigned) i);
  94
  95                 for (j = 0; j < q->v_num; ++j) {
  96                         e = &(q->e[i * q->v_len + j]);
  97
  98                         if (e->p == 0) {
  99                                 printf("%*s", 5, "");
 100                         } else if (e->q == 1) {
 101                                 printf("%*lld", 5, (long long int) e->p);
 102                         } else {
 103                                 printf("%*lld/%llu", 3, (long long int) e->p,
 104                                        (long long unsigned) e->q);
 105                         }
 106                 }
 107         }
 108
 109         printf("\n> ");
 110         fflush(stdout);
 111         need_to_draw = 0;
 112
 113         return 0;
 114 }
 115
 116 int ui_get_event(struct ui_event *e, uint_fast8_t *more)
 117 {
 118         *e = pass_back;
 119         *more = 0;
 120         pass_back = (struct ui_event) { 0 };
 121
 122         return 0;
 123 }