/* * Copyright (c) 2003-2005 Silicon Graphics, Inc. * All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see <http://www.gnu.org/licenses/>. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ctype.h> #include <errno.h> #include <sys/time.h> #include "cmd.h" #define _(x) x /* not gettext support yet */ extern int optind; /* from libxcmd/command.c */ cmdinfo_t *cmdtab; int ncmds; static argsfunc_t args_func; static checkfunc_t check_func; static int ncmdline; static char **cmdline; static int compare(const void *a, const void *b) { return strcmp(((const cmdinfo_t *)a)->name, ((const cmdinfo_t *)b)->name); } void add_command( const cmdinfo_t *ci) { cmdtab = realloc((void *)cmdtab, ++ncmds * sizeof(*cmdtab)); cmdtab[ncmds - 1] = *ci; qsort(cmdtab, ncmds, sizeof(*cmdtab), compare); } static int check_command( const cmdinfo_t *ci) { if (check_func) return check_func(ci); return 1; } void add_check_command( checkfunc_t cf) { check_func = cf; } int command_usage( const cmdinfo_t *ci) { printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); return 0; } int command( const cmdinfo_t *ct, int argc, char **argv) { char *cmd = argv[0]; if (!check_command(ct)) return 0; if (argc-1 < ct->argmin || (ct->argmax != -1 && argc-1 > ct->argmax)) { if (ct->argmax == -1) fprintf(stderr, _("bad argument count %d to %s, expected at least %d arguments\n"), argc-1, cmd, ct->argmin); else if (ct->argmin == ct->argmax) fprintf(stderr, _("bad argument count %d to %s, expected %d arguments\n"), argc-1, cmd, ct->argmin); else fprintf(stderr, _("bad argument count %d to %s, expected between %d and %d arguments\n"), argc-1, cmd, ct->argmin, ct->argmax); return 0; } optind = 0; return ct->cfunc(argc, argv); } const cmdinfo_t * find_command( const char *cmd) { cmdinfo_t *ct; for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { if (strcmp(ct->name, cmd) == 0 || (ct->altname && strcmp(ct->altname, cmd) == 0)) return (const cmdinfo_t *)ct; } return NULL; } void add_user_command(char *optarg) { ncmdline++; cmdline = realloc(cmdline, sizeof(char*) * (ncmdline)); if (!cmdline) { perror("realloc"); exit(1); } cmdline[ncmdline-1] = optarg; } static int args_command( int index) { if (args_func) return args_func(index); return 0; } void add_args_command( argsfunc_t af) { args_func = af; } void command_loop(void) { int c, i, j = 0, done = 0; char *input; char **v; const cmdinfo_t *ct; for (i = 0; !done && i < ncmdline; i++) { input = strdup(cmdline[i]); if (!input) { fprintf(stderr, _("cannot strdup command '%s': %s\n"), cmdline[i], strerror(errno)); exit(1); } v = breakline(input, &c); if (c) { ct = find_command(v[0]); if (ct) { if (ct->flags & CMD_FLAG_GLOBAL) done = command(ct, c, v); else { j = 0; while (!done && (j = args_command(j))) done = command(ct, c, v); } } else fprintf(stderr, _("command \"%s\" not found\n"), v[0]); } doneline(input, v); } if (cmdline) { free(cmdline); return; } while (!done) { if ((input = fetchline()) == NULL) break; v = breakline(input, &c); if (c) { ct = find_command(v[0]); if (ct) done = command(ct, c, v); else fprintf(stderr, _("command \"%s\" not found\n"), v[0]); } doneline(input, v); } } /* from libxcmd/input.c */ #if defined(ENABLE_READLINE) # include <readline/history.h> # include <readline/readline.h> #elif defined(ENABLE_EDITLINE) # include <histedit.h> #endif static char * get_prompt(void) { static char prompt[FILENAME_MAX + 2 /*"> "*/ + 1 /*"\0"*/ ]; if (!prompt[0]) snprintf(prompt, sizeof(prompt), "%s> ", progname); return prompt; } #if defined(ENABLE_READLINE) char * fetchline(void) { char *line; line = readline(get_prompt()); if (line && *line) add_history(line); return line; } #elif defined(ENABLE_EDITLINE) static char *el_get_prompt(EditLine *e) { return get_prompt(); } char * fetchline(void) { static EditLine *el; static History *hist; HistEvent hevent; char *line; int count; if (!el) { hist = history_init(); history(hist, &hevent, H_SETSIZE, 100); el = el_init(progname, stdin, stdout, stderr); el_source(el, NULL); el_set(el, EL_SIGNAL, 1); el_set(el, EL_PROMPT, el_get_prompt); el_set(el, EL_HIST, history, (const char *)hist); } line = strdup(el_gets(el, &count)); if (line) { if (count > 0) line[count-1] = '\0'; if (*line) history(hist, &hevent, H_ENTER, line); } return line; } #else # define MAXREADLINESZ 1024 char * fetchline(void) { char *p, *line = malloc(MAXREADLINESZ); if (!line) return NULL; printf("%s", get_prompt()); fflush(stdout); if (!fgets(line, MAXREADLINESZ, stdin)) { free(line); return NULL; } p = line + strlen(line); if (p != line && p[-1] == '\n') p[-1] = '\0'; return line; } #endif static char *qemu_strsep(char **input, const char *delim) { char *result = *input; if (result != NULL) { char *p = result; for (p = result; *p != '\0'; p++) { if (strchr(delim, *p)) { break; } } if (*p == '\0') { *input = NULL; } else { *p = '\0'; *input = p + 1; } } return result; } char ** breakline( char *input, int *count) { int c = 0; char *p; char **rval = calloc(sizeof(char *), 1); while (rval && (p = qemu_strsep(&input, " ")) != NULL) { if (!*p) continue; c++; rval = realloc(rval, sizeof(*rval) * (c + 1)); if (!rval) { c = 0; break; } rval[c - 1] = p; rval[c] = NULL; } *count = c; return rval; } void doneline( char *input, char **vec) { free(input); free(vec); } #define EXABYTES(x) ((long long)(x) << 60) #define PETABYTES(x) ((long long)(x) << 50) #define TERABYTES(x) ((long long)(x) << 40) #define GIGABYTES(x) ((long long)(x) << 30) #define MEGABYTES(x) ((long long)(x) << 20) #define KILOBYTES(x) ((long long)(x) << 10) long long cvtnum( char *s) { long long i; char *sp; int c; i = strtoll(s, &sp, 0); if (i == 0 && sp == s) return -1LL; if (*sp == '\0') return i; if (sp[1] != '\0') return -1LL; c = tolower(*sp); switch (c) { default: return i; case 'k': return KILOBYTES(i); case 'm': return MEGABYTES(i); case 'g': return GIGABYTES(i); case 't': return TERABYTES(i); case 'p': return PETABYTES(i); case 'e': return EXABYTES(i); } return -1LL; } #define TO_EXABYTES(x) ((x) / EXABYTES(1)) #define TO_PETABYTES(x) ((x) / PETABYTES(1)) #define TO_TERABYTES(x) ((x) / TERABYTES(1)) #define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) #define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) #define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) void cvtstr( double value, char *str, size_t size) { const char *fmt; int precise; precise = ((double)value * 1000 == (double)(int)value * 1000); if (value >= EXABYTES(1)) { fmt = precise ? "%.f EiB" : "%.3f EiB"; snprintf(str, size, fmt, TO_EXABYTES(value)); } else if (value >= PETABYTES(1)) { fmt = precise ? "%.f PiB" : "%.3f PiB"; snprintf(str, size, fmt, TO_PETABYTES(value)); } else if (value >= TERABYTES(1)) { fmt = precise ? "%.f TiB" : "%.3f TiB"; snprintf(str, size, fmt, TO_TERABYTES(value)); } else if (value >= GIGABYTES(1)) { fmt = precise ? "%.f GiB" : "%.3f GiB"; snprintf(str, size, fmt, TO_GIGABYTES(value)); } else if (value >= MEGABYTES(1)) { fmt = precise ? "%.f MiB" : "%.3f MiB"; snprintf(str, size, fmt, TO_MEGABYTES(value)); } else if (value >= KILOBYTES(1)) { fmt = precise ? "%.f KiB" : "%.3f KiB"; snprintf(str, size, fmt, TO_KILOBYTES(value)); } else { snprintf(str, size, "%f bytes", value); } } struct timeval tsub(struct timeval t1, struct timeval t2) { t1.tv_usec -= t2.tv_usec; if (t1.tv_usec < 0) { t1.tv_usec += 1000000; t1.tv_sec--; } t1.tv_sec -= t2.tv_sec; return t1; } double tdiv(double value, struct timeval tv) { return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); } #define HOURS(sec) ((sec) / (60 * 60)) #define MINUTES(sec) (((sec) % (60 * 60)) / 60) #define SECONDS(sec) ((sec) % 60) void timestr( struct timeval *tv, char *ts, size_t size, int format) { double usec = (double)tv->tv_usec / 1000000.0; if (format & TERSE_FIXED_TIME) { if (!HOURS(tv->tv_sec)) { snprintf(ts, size, "%u:%02u.%02u", (unsigned int) MINUTES(tv->tv_sec), (unsigned int) SECONDS(tv->tv_sec), (unsigned int) usec * 100); return; } format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ } if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { snprintf(ts, size, "%u:%02u:%02u.%02u", (unsigned int) HOURS(tv->tv_sec), (unsigned int) MINUTES(tv->tv_sec), (unsigned int) SECONDS(tv->tv_sec), (unsigned int) usec * 100); } else { snprintf(ts, size, "0.%04u sec", (unsigned int) usec * 10000); } } /* from libxcmd/quit.c */ static cmdinfo_t quit_cmd; /* ARGSUSED */ static int quit_f( int argc, char **argv) { return 1; } void quit_init(void) { quit_cmd.name = _("quit"); quit_cmd.altname = _("q"); quit_cmd.cfunc = quit_f; quit_cmd.argmin = -1; quit_cmd.argmax = -1; quit_cmd.flags = CMD_FLAG_GLOBAL; quit_cmd.oneline = _("exit the program"); add_command(&quit_cmd); } /* from libxcmd/help.c */ static cmdinfo_t help_cmd; static void help_onecmd(const char *cmd, const cmdinfo_t *ct); static void help_oneline(const char *cmd, const cmdinfo_t *ct); static void help_all(void) { const cmdinfo_t *ct; for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) help_oneline(ct->name, ct); printf(_("\nUse 'help commandname' for extended help.\n")); } static int help_f( int argc, char **argv) { const cmdinfo_t *ct; if (argc == 1) { help_all(); return 0; } ct = find_command(argv[1]); if (ct == NULL) { printf(_("command %s not found\n"), argv[1]); return 0; } help_onecmd(argv[1], ct); return 0; } static void help_onecmd( const char *cmd, const cmdinfo_t *ct) { help_oneline(cmd, ct); if (ct->help) ct->help(); } static void help_oneline( const char *cmd, const cmdinfo_t *ct) { if (cmd) printf("%s ", cmd); else { printf("%s ", ct->name); if (ct->altname) printf("(or %s) ", ct->altname); } if (ct->args) printf("%s ", ct->args); printf("-- %s\n", ct->oneline); } void help_init(void) { help_cmd.name = _("help"); help_cmd.altname = _("?"); help_cmd.cfunc = help_f; help_cmd.argmin = 0; help_cmd.argmax = 1; help_cmd.flags = CMD_FLAG_GLOBAL; help_cmd.args = _("[command]"); help_cmd.oneline = _("help for one or all commands"); add_command(&help_cmd); }