Add files not included in previous commit.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6995 c046a42c-6fe2-441c-8c8c-71466251a162

cmd.c

+/*
+ * 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, write the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.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
+
+extern char *progname;
+
+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
+
+char **
+breakline(
+	char	*input,
+	int	*count)
+{
+	int	c = 0;
+	char	*p;
+	char	**rval = calloc(sizeof(char *), 1);
+
+	while (rval && (p = 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);
+}

cmd.h

+/*
+ * Copyright (c) 2000-2005 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, write the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#ifndef __COMMAND_H__
+#define __COMMAND_H__
+
+#define CMD_FLAG_GLOBAL	((int)0x80000000)	/* don't iterate "args" */
+
+typedef int (*cfunc_t)(int argc, char **argv);
+typedef void (*helpfunc_t)(void);
+
+typedef struct cmdinfo {
+	const char	*name;
+	const char	*altname;
+	cfunc_t		cfunc;
+	int		argmin;
+	int		argmax;
+	int		canpush;
+	int		flags;
+	const char	*args;
+	const char	*oneline;
+	helpfunc_t      help;
+} cmdinfo_t;
+
+extern cmdinfo_t	*cmdtab;
+extern int		ncmds;
+
+extern void		help_init(void);
+extern void		quit_init(void);
+
+typedef int (*argsfunc_t)(int index);
+typedef int (*checkfunc_t)(const cmdinfo_t *ci);
+
+extern void		add_command(const cmdinfo_t *ci);
+extern void		add_user_command(char *optarg);
+extern void		add_args_command(argsfunc_t af);
+extern void		add_check_command(checkfunc_t cf);
+
+extern const cmdinfo_t	*find_command(const char *cmd);
+
+extern void		command_loop(void);
+extern int		command_usage(const cmdinfo_t *ci);
+extern int		command(const cmdinfo_t *ci, int argc, char **argv);
+
+/* from input.h */
+extern char	**breakline(char *input, int *count);
+extern void	doneline(char *input, char **vec);
+extern char	*fetchline(void);
+
+extern long long cvtnum(char *s);
+extern void	cvtstr(double value, char *str, size_t sz);
+
+extern struct timeval tsub(struct timeval t1, struct timeval t2);
+extern double	tdiv(double value, struct timeval tv);
+
+enum {
+	DEFAULT_TIME		= 0x0,
+	TERSE_FIXED_TIME	= 0x1,
+	VERBOSE_FIXED_TIME	= 0x2
+};
+
+extern void	timestr(struct timeval *tv, char *str, size_t sz, int flags);
+
+#endif	/* __COMMAND_H__ */