ceph/src/dpdk/lib/librte_cmdline/cmdline_vt100.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 /*
  35  * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
  36  * All rights reserved.
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions are met:
  39  *
  40  *     * Redistributions of source code must retain the above copyright
  41  *       notice, this list of conditions and the following disclaimer.
  42  *     * Redistributions in binary form must reproduce the above copyright
  43  *       notice, this list of conditions and the following disclaimer in the
  44  *       documentation and/or other materials provided with the distribution.
  45  *     * Neither the name of the University of California, Berkeley nor the
  46  *       names of its contributors may be used to endorse or promote products
  47  *       derived from this software without specific prior written permission.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
  50  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  51  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  52  * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
  53  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  54  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  55  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  56  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  57  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  58  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  59  */
  60
  61 #include <stdlib.h>
  62 #include <stdint.h>
  63 #include <stdio.h>
  64 #include <string.h>
  65 #include <stdarg.h>
  66 #include <ctype.h>
  67 #include <termios.h>
  68
  69 #include "cmdline_vt100.h"
  70
  71 const char *cmdline_vt100_commands[] = {
  72         vt100_up_arr,
  73         vt100_down_arr,
  74         vt100_right_arr,
  75         vt100_left_arr,
  76         "\177",
  77         "\n",
  78         "\001",
  79         "\005",
  80         "\013",
  81         "\031",
  82         "\003",
  83         "\006",
  84         "\002",
  85         vt100_suppr,
  86         vt100_tab,
  87         "\004",
  88         "\014",
  89         "\r",
  90         "\033\177",
  91         vt100_word_left,
  92         vt100_word_right,
  93         "?",
  94         "\027",
  95         "\020",
  96         "\016",
  97         "\033\144",
  98 };
  99
 100 void
 101 vt100_init(struct cmdline_vt100 *vt)
 102 {
 103         if (!vt)
 104                 return;
 105         vt->state = CMDLINE_VT100_INIT;
 106 }
 107
 108
 109 static int
 110 match_command(char *buf, unsigned int size)
 111 {
 112         const char *cmd;
 113         size_t cmdlen;
 114         unsigned int i = 0;
 115
 116         for (i=0 ; i<sizeof(cmdline_vt100_commands)/sizeof(const char *) ; i++) {
 117                 cmd = *(cmdline_vt100_commands + i);
 118
 119                 cmdlen = strnlen(cmd, CMDLINE_VT100_BUF_SIZE);
 120                 if (size == cmdlen &&
 121                     !strncmp(buf, cmd, cmdlen)) {
 122                         return i;
 123                 }
 124         }
 125
 126         return -1;
 127 }
 128
 129 int
 130 vt100_parser(struct cmdline_vt100 *vt, char ch)
 131 {
 132         unsigned int size;
 133         uint8_t c = (uint8_t) ch;
 134
 135         if (!vt)
 136                 return -1;
 137
 138         if (vt->bufpos >= CMDLINE_VT100_BUF_SIZE) {
 139                 vt->state = CMDLINE_VT100_INIT;
 140                 vt->bufpos = 0;
 141         }
 142
 143         vt->buf[vt->bufpos++] = c;
 144         size = vt->bufpos;
 145
 146         switch (vt->state) {
 147         case CMDLINE_VT100_INIT:
 148                 if (c == 033) {
 149                         vt->state = CMDLINE_VT100_ESCAPE;
 150                 }
 151                 else {
 152                         vt->bufpos = 0;
 153                         goto match_command;
 154                 }
 155                 break;
 156
 157         case CMDLINE_VT100_ESCAPE:
 158                 if (c == 0133) {
 159                         vt->state = CMDLINE_VT100_ESCAPE_CSI;
 160                 }
 161                 else if (c >= 060 && c <= 0177) { /* XXX 0177 ? */
 162                         vt->bufpos = 0;
 163                         vt->state = CMDLINE_VT100_INIT;
 164                         goto match_command;
 165                 }
 166                 break;
 167
 168         case CMDLINE_VT100_ESCAPE_CSI:
 169                 if (c >= 0100 && c <= 0176) {
 170                         vt->bufpos = 0;
 171                         vt->state = CMDLINE_VT100_INIT;
 172                         goto match_command;
 173                 }
 174                 break;
 175
 176         default:
 177                 vt->bufpos = 0;
 178                 break;
 179         }
 180
 181         return -2;
 182
 183  match_command:
 184         return match_command(vt->buf, size);
 185 }