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/*
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* Copyright (c) 2003-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <ctype.h> |
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#include <errno.h> |
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#include <sys/time.h> |
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#include <getopt.h> |
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#include "cmd.h" |
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#define _(x) x /* not gettext support yet */ |
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|
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/* from libxcmd/command.c */
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cmdinfo_t *cmdtab; |
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int ncmds;
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static argsfunc_t args_func;
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static checkfunc_t check_func;
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static int ncmdline; |
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static char **cmdline; |
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static int |
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compare(const void *a, const void *b) |
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{ |
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return strcmp(((const cmdinfo_t *)a)->name, |
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((const cmdinfo_t *)b)->name);
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} |
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void
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add_command( |
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const cmdinfo_t *ci)
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{ |
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cmdtab = realloc((void *)cmdtab, ++ncmds * sizeof(*cmdtab)); |
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cmdtab[ncmds - 1] = *ci;
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qsort(cmdtab, ncmds, sizeof(*cmdtab), compare);
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} |
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static int |
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check_command( |
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const cmdinfo_t *ci)
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{ |
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if (check_func)
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return check_func(ci);
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return 1; |
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} |
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|
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void
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add_check_command( |
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checkfunc_t cf) |
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{ |
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check_func = cf; |
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} |
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|
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int
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command_usage( |
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const cmdinfo_t *ci)
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{ |
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printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline);
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return 0; |
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} |
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int
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command( |
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const cmdinfo_t *ct,
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int argc,
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char **argv)
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{ |
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char *cmd = argv[0]; |
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if (!check_command(ct))
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return 0; |
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if (argc-1 < ct->argmin || (ct->argmax != -1 && argc-1 > ct->argmax)) { |
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if (ct->argmax == -1) |
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fprintf(stderr, |
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_("bad argument count %d to %s, expected at least %d arguments\n"),
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argc-1, cmd, ct->argmin);
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else if (ct->argmin == ct->argmax) |
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fprintf(stderr, |
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_("bad argument count %d to %s, expected %d arguments\n"),
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argc-1, cmd, ct->argmin);
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else
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fprintf(stderr, |
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_("bad argument count %d to %s, expected between %d and %d arguments\n"),
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argc-1, cmd, ct->argmin, ct->argmax);
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return 0; |
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} |
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optind = 0;
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return ct->cfunc(argc, argv);
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} |
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const cmdinfo_t *
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find_command( |
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const char *cmd) |
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{ |
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cmdinfo_t *ct; |
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for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
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if (strcmp(ct->name, cmd) == 0 || |
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(ct->altname && strcmp(ct->altname, cmd) == 0))
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return (const cmdinfo_t *)ct; |
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} |
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return NULL; |
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} |
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void
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add_user_command(char *optarg)
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{ |
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ncmdline++; |
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cmdline = realloc(cmdline, sizeof(char*) * (ncmdline)); |
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if (!cmdline) {
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perror("realloc");
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exit(1);
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} |
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cmdline[ncmdline-1] = optarg;
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} |
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static int |
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args_command( |
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int index)
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{ |
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if (args_func)
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return args_func(index);
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return 0; |
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} |
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|
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void
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add_args_command( |
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argsfunc_t af) |
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{ |
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args_func = af; |
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} |
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void
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command_loop(void)
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{ |
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int c, i, j = 0, done = 0; |
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char *input;
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char **v;
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const cmdinfo_t *ct;
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for (i = 0; !done && i < ncmdline; i++) { |
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input = strdup(cmdline[i]); |
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if (!input) {
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fprintf(stderr, |
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_("cannot strdup command '%s': %s\n"),
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cmdline[i], strerror(errno)); |
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exit(1);
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} |
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v = breakline(input, &c); |
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if (c) {
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ct = find_command(v[0]);
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if (ct) {
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if (ct->flags & CMD_FLAG_GLOBAL)
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done = command(ct, c, v); |
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else {
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j = 0;
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while (!done && (j = args_command(j)))
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done = command(ct, c, v); |
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} |
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} else
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fprintf(stderr, _("command \"%s\" not found\n"),
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v[0]);
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} |
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doneline(input, v); |
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} |
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if (cmdline) {
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free(cmdline); |
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return;
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} |
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while (!done) {
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if ((input = fetchline()) == NULL) |
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break;
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v = breakline(input, &c); |
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if (c) {
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ct = find_command(v[0]);
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if (ct)
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done = command(ct, c, v); |
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else
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fprintf(stderr, _("command \"%s\" not found\n"),
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v[0]);
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} |
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doneline(input, v); |
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} |
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} |
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/* from libxcmd/input.c */
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#if defined(ENABLE_READLINE)
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# include <readline/history.h> |
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# include <readline/readline.h> |
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#elif defined(ENABLE_EDITLINE)
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# include <histedit.h> |
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#endif
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static char * |
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get_prompt(void)
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{ |
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static char prompt[FILENAME_MAX + 2 /*"> "*/ + 1 /*"\0"*/ ]; |
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if (!prompt[0]) |
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snprintf(prompt, sizeof(prompt), "%s> ", progname); |
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return prompt;
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} |
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#if defined(ENABLE_READLINE)
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char *
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fetchline(void)
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{ |
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char *line;
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line = readline(get_prompt()); |
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if (line && *line)
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add_history(line); |
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return line;
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} |
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#elif defined(ENABLE_EDITLINE)
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static char *el_get_prompt(EditLine *e) { return get_prompt(); } |
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char *
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fetchline(void)
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{ |
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static EditLine *el;
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static History *hist;
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HistEvent hevent; |
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char *line;
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int count;
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if (!el) {
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hist = history_init(); |
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history(hist, &hevent, H_SETSIZE, 100);
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el = el_init(progname, stdin, stdout, stderr); |
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el_source(el, NULL);
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el_set(el, EL_SIGNAL, 1);
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el_set(el, EL_PROMPT, el_get_prompt); |
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el_set(el, EL_HIST, history, (const char *)hist); |
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} |
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line = strdup(el_gets(el, &count)); |
256 |
if (line) {
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if (count > 0) |
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line[count-1] = '\0'; |
259 |
if (*line)
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history(hist, &hevent, H_ENTER, line); |
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} |
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return line;
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} |
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#else
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# define MAXREADLINESZ 1024 |
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char *
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fetchline(void)
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{ |
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char *p, *line = malloc(MAXREADLINESZ);
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if (!line)
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return NULL; |
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printf("%s", get_prompt());
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fflush(stdout); |
275 |
if (!fgets(line, MAXREADLINESZ, stdin)) {
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free(line); |
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return NULL; |
278 |
} |
279 |
p = line + strlen(line); |
280 |
if (p != line && p[-1] == '\n') |
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p[-1] = '\0'; |
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return line;
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} |
284 |
#endif
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285 |
|
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static char *qemu_strsep(char **input, const char *delim) |
287 |
{ |
288 |
char *result = *input;
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if (result != NULL) { |
290 |
char *p = result;
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for (p = result; *p != '\0'; p++) { |
292 |
if (strchr(delim, *p)) {
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break;
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} |
295 |
} |
296 |
if (*p == '\0') { |
297 |
*input = NULL;
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} else {
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*p = '\0';
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*input = p + 1;
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} |
302 |
} |
303 |
return result;
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} |
305 |
|
306 |
char **
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breakline( |
308 |
char *input,
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int *count)
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310 |
{ |
311 |
int c = 0; |
312 |
char *p;
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char **rval = calloc(sizeof(char *), 1); |
314 |
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while (rval && (p = qemu_strsep(&input, " ")) != NULL) { |
316 |
if (!*p)
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continue;
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c++; |
319 |
rval = realloc(rval, sizeof(*rval) * (c + 1)); |
320 |
if (!rval) {
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c = 0;
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break;
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} |
324 |
rval[c - 1] = p;
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rval[c] = NULL;
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} |
327 |
*count = c; |
328 |
return rval;
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} |
330 |
|
331 |
void
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doneline( |
333 |
char *input,
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char **vec)
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{ |
336 |
free(input); |
337 |
free(vec); |
338 |
} |
339 |
|
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#define EXABYTES(x) ((long long)(x) << 60) |
341 |
#define PETABYTES(x) ((long long)(x) << 50) |
342 |
#define TERABYTES(x) ((long long)(x) << 40) |
343 |
#define GIGABYTES(x) ((long long)(x) << 30) |
344 |
#define MEGABYTES(x) ((long long)(x) << 20) |
345 |
#define KILOBYTES(x) ((long long)(x) << 10) |
346 |
|
347 |
long long |
348 |
cvtnum( |
349 |
char *s)
|
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{ |
351 |
long long i; |
352 |
char *sp;
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int c;
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|
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i = strtoll(s, &sp, 0);
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if (i == 0 && sp == s) |
357 |
return -1LL; |
358 |
if (*sp == '\0') |
359 |
return i;
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360 |
|
361 |
if (sp[1] != '\0') |
362 |
return -1LL; |
363 |
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364 |
c = tolower(*sp); |
365 |
switch (c) {
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366 |
default:
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367 |
return i;
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368 |
case 'k': |
369 |
return KILOBYTES(i);
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370 |
case 'm': |
371 |
return MEGABYTES(i);
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372 |
case 'g': |
373 |
return GIGABYTES(i);
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374 |
case 't': |
375 |
return TERABYTES(i);
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376 |
case 'p': |
377 |
return PETABYTES(i);
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378 |
case 'e': |
379 |
return EXABYTES(i);
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380 |
} |
381 |
return -1LL; |
382 |
} |
383 |
|
384 |
#define TO_EXABYTES(x) ((x) / EXABYTES(1)) |
385 |
#define TO_PETABYTES(x) ((x) / PETABYTES(1)) |
386 |
#define TO_TERABYTES(x) ((x) / TERABYTES(1)) |
387 |
#define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) |
388 |
#define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) |
389 |
#define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) |
390 |
|
391 |
void
|
392 |
cvtstr( |
393 |
double value,
|
394 |
char *str,
|
395 |
size_t size) |
396 |
{ |
397 |
const char *fmt; |
398 |
int precise;
|
399 |
|
400 |
precise = ((double)value * 1000 == (double)(int)value * 1000); |
401 |
|
402 |
if (value >= EXABYTES(1)) { |
403 |
fmt = precise ? "%.f EiB" : "%.3f EiB"; |
404 |
snprintf(str, size, fmt, TO_EXABYTES(value)); |
405 |
} else if (value >= PETABYTES(1)) { |
406 |
fmt = precise ? "%.f PiB" : "%.3f PiB"; |
407 |
snprintf(str, size, fmt, TO_PETABYTES(value)); |
408 |
} else if (value >= TERABYTES(1)) { |
409 |
fmt = precise ? "%.f TiB" : "%.3f TiB"; |
410 |
snprintf(str, size, fmt, TO_TERABYTES(value)); |
411 |
} else if (value >= GIGABYTES(1)) { |
412 |
fmt = precise ? "%.f GiB" : "%.3f GiB"; |
413 |
snprintf(str, size, fmt, TO_GIGABYTES(value)); |
414 |
} else if (value >= MEGABYTES(1)) { |
415 |
fmt = precise ? "%.f MiB" : "%.3f MiB"; |
416 |
snprintf(str, size, fmt, TO_MEGABYTES(value)); |
417 |
} else if (value >= KILOBYTES(1)) { |
418 |
fmt = precise ? "%.f KiB" : "%.3f KiB"; |
419 |
snprintf(str, size, fmt, TO_KILOBYTES(value)); |
420 |
} else {
|
421 |
snprintf(str, size, "%f bytes", value);
|
422 |
} |
423 |
} |
424 |
|
425 |
struct timeval
|
426 |
tsub(struct timeval t1, struct timeval t2) |
427 |
{ |
428 |
t1.tv_usec -= t2.tv_usec; |
429 |
if (t1.tv_usec < 0) { |
430 |
t1.tv_usec += 1000000;
|
431 |
t1.tv_sec--; |
432 |
} |
433 |
t1.tv_sec -= t2.tv_sec; |
434 |
return t1;
|
435 |
} |
436 |
|
437 |
double
|
438 |
tdiv(double value, struct timeval tv) |
439 |
{ |
440 |
return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); |
441 |
} |
442 |
|
443 |
#define HOURS(sec) ((sec) / (60 * 60)) |
444 |
#define MINUTES(sec) (((sec) % (60 * 60)) / 60) |
445 |
#define SECONDS(sec) ((sec) % 60) |
446 |
|
447 |
void
|
448 |
timestr( |
449 |
struct timeval *tv,
|
450 |
char *ts,
|
451 |
size_t size, |
452 |
int format)
|
453 |
{ |
454 |
double usec = (double)tv->tv_usec / 1000000.0; |
455 |
|
456 |
if (format & TERSE_FIXED_TIME) {
|
457 |
if (!HOURS(tv->tv_sec)) {
|
458 |
snprintf(ts, size, "%u:%02u.%02u",
|
459 |
(unsigned int) MINUTES(tv->tv_sec), |
460 |
(unsigned int) SECONDS(tv->tv_sec), |
461 |
(unsigned int) usec * 100); |
462 |
return;
|
463 |
} |
464 |
format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */
|
465 |
} |
466 |
|
467 |
if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) {
|
468 |
snprintf(ts, size, "%u:%02u:%02u.%02u",
|
469 |
(unsigned int) HOURS(tv->tv_sec), |
470 |
(unsigned int) MINUTES(tv->tv_sec), |
471 |
(unsigned int) SECONDS(tv->tv_sec), |
472 |
(unsigned int) usec * 100); |
473 |
} else {
|
474 |
snprintf(ts, size, "0.%04u sec", (unsigned int) usec * 10000); |
475 |
} |
476 |
} |
477 |
|
478 |
|
479 |
/* from libxcmd/quit.c */
|
480 |
|
481 |
static cmdinfo_t quit_cmd;
|
482 |
|
483 |
/* ARGSUSED */
|
484 |
static int |
485 |
quit_f( |
486 |
int argc,
|
487 |
char **argv)
|
488 |
{ |
489 |
return 1; |
490 |
} |
491 |
|
492 |
void
|
493 |
quit_init(void)
|
494 |
{ |
495 |
quit_cmd.name = _("quit");
|
496 |
quit_cmd.altname = _("q");
|
497 |
quit_cmd.cfunc = quit_f; |
498 |
quit_cmd.argmin = -1;
|
499 |
quit_cmd.argmax = -1;
|
500 |
quit_cmd.flags = CMD_FLAG_GLOBAL; |
501 |
quit_cmd.oneline = _("exit the program");
|
502 |
|
503 |
add_command(&quit_cmd); |
504 |
} |
505 |
|
506 |
/* from libxcmd/help.c */
|
507 |
|
508 |
static cmdinfo_t help_cmd;
|
509 |
static void help_onecmd(const char *cmd, const cmdinfo_t *ct); |
510 |
static void help_oneline(const char *cmd, const cmdinfo_t *ct); |
511 |
|
512 |
static void |
513 |
help_all(void)
|
514 |
{ |
515 |
const cmdinfo_t *ct;
|
516 |
|
517 |
for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++)
|
518 |
help_oneline(ct->name, ct); |
519 |
printf(_("\nUse 'help commandname' for extended help.\n"));
|
520 |
} |
521 |
|
522 |
static int |
523 |
help_f( |
524 |
int argc,
|
525 |
char **argv)
|
526 |
{ |
527 |
const cmdinfo_t *ct;
|
528 |
|
529 |
if (argc == 1) { |
530 |
help_all(); |
531 |
return 0; |
532 |
} |
533 |
ct = find_command(argv[1]);
|
534 |
if (ct == NULL) { |
535 |
printf(_("command %s not found\n"), argv[1]); |
536 |
return 0; |
537 |
} |
538 |
help_onecmd(argv[1], ct);
|
539 |
return 0; |
540 |
} |
541 |
|
542 |
static void |
543 |
help_onecmd( |
544 |
const char *cmd, |
545 |
const cmdinfo_t *ct)
|
546 |
{ |
547 |
help_oneline(cmd, ct); |
548 |
if (ct->help)
|
549 |
ct->help(); |
550 |
} |
551 |
|
552 |
static void |
553 |
help_oneline( |
554 |
const char *cmd, |
555 |
const cmdinfo_t *ct)
|
556 |
{ |
557 |
if (cmd)
|
558 |
printf("%s ", cmd);
|
559 |
else {
|
560 |
printf("%s ", ct->name);
|
561 |
if (ct->altname)
|
562 |
printf("(or %s) ", ct->altname);
|
563 |
} |
564 |
if (ct->args)
|
565 |
printf("%s ", ct->args);
|
566 |
printf("-- %s\n", ct->oneline);
|
567 |
} |
568 |
|
569 |
void
|
570 |
help_init(void)
|
571 |
{ |
572 |
help_cmd.name = _("help");
|
573 |
help_cmd.altname = _("?");
|
574 |
help_cmd.cfunc = help_f; |
575 |
help_cmd.argmin = 0;
|
576 |
help_cmd.argmax = 1;
|
577 |
help_cmd.flags = CMD_FLAG_GLOBAL; |
578 |
help_cmd.args = _("[command]");
|
579 |
help_cmd.oneline = _("help for one or all commands");
|
580 |
|
581 |
add_command(&help_cmd); |
582 |
} |