Annotation of prex/usr/test/kmon/kmon.c, Revision 1.1
1.1 ! nbrk 1: /*
! 2: * Copyright (c) 2005, Kohsuke Ohtani
! 3: * All rights reserved.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: * 1. Redistributions of source code must retain the above copyright
! 9: * notice, this list of conditions and the following disclaimer.
! 10: * 2. Redistributions in binary form must reproduce the above copyright
! 11: * notice, this list of conditions and the following disclaimer in the
! 12: * documentation and/or other materials provided with the distribution.
! 13: * 3. Neither the name of the author nor the names of any co-contributors
! 14: * may be used to endorse or promote products derived from this software
! 15: * without specific prior written permission.
! 16: *
! 17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 27: * SUCH DAMAGE.
! 28: */
! 29:
! 30: /*
! 31: * kmon.c - main routine for kernel monitor
! 32: */
! 33:
! 34: #include <prex/prex.h>
! 35: #include <prex/keycode.h>
! 36: #include <ctype.h>
! 37: #include <stdio.h>
! 38: #include <limits.h>
! 39:
! 40: extern int dispatch_cmd(int argc, char **arg_list);
! 41:
! 42: static char *arg_list[LINE_MAX];
! 43:
! 44: /*
! 45: * Read a line.
! 46: */
! 47: void
! 48: read_line(char *line)
! 49: {
! 50: int c, len = 0;
! 51: char *p = line;
! 52:
! 53: for (;;) {
! 54: c = getchar();
! 55: if (c == '\n' || len > LINE_MAX) {
! 56: *p = '\0';
! 57: return;
! 58: }
! 59: *p = (char)c;
! 60: p++;
! 61: len++;
! 62: }
! 63: }
! 64:
! 65: /*
! 66: * Parse an entire given line.
! 67: */
! 68: int
! 69: parse_line(char *line)
! 70: {
! 71: char *p = line;
! 72: int argc = 0;
! 73:
! 74: for (;;) {
! 75: /* Skip space */
! 76: while (*p && *p == ' ')
! 77: p++;
! 78: if (*p == 0)
! 79: break;
! 80: arg_list[argc++] = p;
! 81:
! 82: /* Skip word */
! 83: while (*p && *p != ' ')
! 84: p++;
! 85: if (*p == 0)
! 86: break;
! 87: *p++ = 0;
! 88: }
! 89: arg_list[argc] = NULL;
! 90: return argc;
! 91: }
! 92:
! 93: int
! 94: main(int argc, char *argv[])
! 95: {
! 96: char line[LINE_MAX];
! 97: int c;
! 98:
! 99: printf("Prex kernel monitor - type 'help' to list commands\n");
! 100:
! 101: for (;;) {
! 102: printf("[kmon]$ ");
! 103: read_line(line);
! 104: c = parse_line(line);
! 105: if (c) {
! 106: if (dispatch_cmd(c, arg_list))
! 107: break;
! 108: }
! 109: }
! 110: return 0;
! 111: }
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