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/* $Id: cmd-generic.c,v 1.38 2009/12/04 22:14:47 tcunha Exp $ */
/*
* Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
int cmd_getopt(int, char **, const char *, const char *);
int cmd_parse_flags(int, const char *, uint64_t *);
size_t cmd_print_flags(char *, size_t, size_t, uint64_t);
int cmd_fill_argument(int, char **, char **, int, char **);
size_t
cmd_prarg(char *buf, size_t len, const char *prefix, char *arg)
{
if (strchr(arg, ' ') != NULL)
return (xsnprintf(buf, len, "%s\"%s\"", prefix, arg));
return (xsnprintf(buf, len, "%s%s", prefix, arg));
}
/* Append two flag strings together and call getopt. */
int
cmd_getopt(int argc, char **argv, const char *flagstr, const char *chflagstr)
{
char tmp[BUFSIZ];
if (strlcpy(tmp, flagstr, sizeof tmp) >= sizeof tmp)
fatalx("strlcpy overflow");
if (strlcat(tmp, chflagstr, sizeof tmp) >= sizeof tmp)
fatalx("strlcat overflow");
return (getopt(argc, argv, tmp));
}
/* Return if flag character is set. */
int
cmd_check_flag(uint64_t chflags, int flag)
{
if (flag >= 'A' && flag <= 'Z')
flag = 26 + flag - 'A';
else if (flag >= 'a' && flag <= 'z')
flag = flag - 'a';
else
return (0);
return ((chflags & (1ULL << flag)) != 0);
}
/* Set flag character. */
void
cmd_set_flag(uint64_t *chflags, int flag)
{
if (flag >= 'A' && flag <= 'Z')
flag = 26 + flag - 'A';
else if (flag >= 'a' && flag <= 'z')
flag = flag - 'a';
else
return;
(*chflags) |= (1ULL << flag);
}
/* If this option is expected, set it in chflags, otherwise return -1. */
int
cmd_parse_flags(int opt, const char *chflagstr, uint64_t *chflags)
{
if (strchr(chflagstr, opt) == NULL)
return (-1);
cmd_set_flag(chflags, opt);
return (0);
}
/* Print the flags present in chflags. */
size_t
cmd_print_flags(char *buf, size_t len, size_t off, uint64_t chflags)
{
u_char ch;
size_t boff = off;
if (chflags == 0)
return (0);
off += xsnprintf(buf + off, len - off, " -");
for (ch = 0; ch < 26; ch++) {
if (cmd_check_flag(chflags, 'a' + ch))
off += xsnprintf(buf + off, len - off, "%c", 'a' + ch);
if (cmd_check_flag(chflags, 'A' + ch))
off += xsnprintf(buf + off, len - off, "%c", 'A' + ch);
}
return (off - boff);
}
int
cmd_fill_argument(int flags, char **arg, char **arg2, int argc, char **argv)
{
*arg = NULL;
*arg2 = NULL;
if (flags & CMD_ARG1) {
if (argc != 1)
return (-1);
*arg = xstrdup(argv[0]);
return (0);
}
if (flags & CMD_ARG01) {
if (argc != 0 && argc != 1)
return (-1);
if (argc == 1)
*arg = xstrdup(argv[0]);
return (0);
}
if (flags & CMD_ARG2) {
if (argc != 2)
return (-1);
*arg = xstrdup(argv[0]);
*arg2 = xstrdup(argv[1]);
return (0);
}
if (flags & CMD_ARG12) {
if (argc != 1 && argc != 2)
return (-1);
*arg = xstrdup(argv[0]);
if (argc == 2)
*arg2 = xstrdup(argv[1]);
return (0);
}
if (argc != 0)
return (-1);
return (0);
}
/* ARGSUSED */
void
cmd_target_init(struct cmd *self, unused int key)
{
struct cmd_target_data *data;
self->data = data = xmalloc(sizeof *data);
data->chflags = 0;
data->target = NULL;
data->arg = NULL;
data->arg2 = NULL;
}
int
cmd_target_parse(struct cmd *self, int argc, char **argv, char **cause)
{
struct cmd_target_data *data;
const struct cmd_entry *entry = self->entry;
int opt;
/* Don't use the entry version since it may be dependent on key. */
cmd_target_init(self, 0);
data = self->data;
while ((opt = cmd_getopt(argc, argv, "t:", entry->chflags)) != -1) {
if (cmd_parse_flags(opt, entry->chflags, &data->chflags) == 0)
continue;
switch (opt) {
case 't':
if (data->target == NULL)
data->target = xstrdup(optarg);
break;
default:
goto usage;
}
}
argc -= optind;
argv += optind;
if (cmd_fill_argument(
self->entry->flags, &data->arg, &data->arg2, argc, argv) != 0)
goto usage;
return (0);
usage:
xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
self->entry->free(self);
return (-1);
}
void
cmd_target_free(struct cmd *self)
{
struct cmd_target_data *data = self->data;
if (data->target != NULL)
xfree(data->target);
if (data->arg != NULL)
xfree(data->arg);
if (data->arg2 != NULL)
xfree(data->arg2);
xfree(data);
}
size_t
cmd_target_print(struct cmd *self, char *buf, size_t len)
{
struct cmd_target_data *data = self->data;
size_t off = 0;
off += xsnprintf(buf, len, "%s", self->entry->name);
if (data == NULL)
return (off);
off += cmd_print_flags(buf, len, off, data->chflags);
if (off < len && data->target != NULL)
off += cmd_prarg(buf + off, len - off, " -t ", data->target);
if (off < len && data->arg != NULL)
off += cmd_prarg(buf + off, len - off, " ", data->arg);
if (off < len && data->arg2 != NULL)
off += cmd_prarg(buf + off, len - off, " ", data->arg2);
return (off);
}
/* ARGSUSED */
void
cmd_srcdst_init(struct cmd *self, unused int key)
{
struct cmd_srcdst_data *data;
self->data = data = xmalloc(sizeof *data);
data->chflags = 0;
data->src = NULL;
data->dst = NULL;
data->arg = NULL;
data->arg2 = NULL;
}
int
cmd_srcdst_parse(struct cmd *self, int argc, char **argv, char **cause)
{
struct cmd_srcdst_data *data;
const struct cmd_entry *entry = self->entry;
int opt;
cmd_srcdst_init(self, 0);
data = self->data;
while ((opt = cmd_getopt(argc, argv, "s:t:", entry->chflags)) != -1) {
if (cmd_parse_flags(opt, entry->chflags, &data->chflags) == 0)
continue;
switch (opt) {
case 's':
if (data->src == NULL)
data->src = xstrdup(optarg);
break;
case 't':
if (data->dst == NULL)
data->dst = xstrdup(optarg);
break;
default:
goto usage;
}
}
argc -= optind;
argv += optind;
if (cmd_fill_argument(
self->entry->flags, &data->arg, &data->arg2, argc, argv) != 0)
goto usage;
return (0);
usage:
xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
self->entry->free(self);
return (-1);
}
void
cmd_srcdst_free(struct cmd *self)
{
struct cmd_srcdst_data *data = self->data;
if (data->src != NULL)
xfree(data->src);
if (data->dst != NULL)
xfree(data->dst);
if (data->arg != NULL)
xfree(data->arg);
if (data->arg2 != NULL)
xfree(data->arg2);
xfree(data);
}
size_t
cmd_srcdst_print(struct cmd *self, char *buf, size_t len)
{
struct cmd_srcdst_data *data = self->data;
size_t off = 0;
off += xsnprintf(buf, len, "%s", self->entry->name);
if (data == NULL)
return (off);
off += cmd_print_flags(buf, len, off, data->chflags);
if (off < len && data->src != NULL)
off += xsnprintf(buf + off, len - off, " -s %s", data->src);
if (off < len && data->dst != NULL)
off += xsnprintf(buf + off, len - off, " -t %s", data->dst);
if (off < len && data->arg != NULL)
off += cmd_prarg(buf + off, len - off, " ", data->arg);
if (off < len && data->arg2 != NULL)
off += cmd_prarg(buf + off, len - off, " ", data->arg2);
return (off);
}
/* ARGSUSED */
void
cmd_buffer_init(struct cmd *self, unused int key)
{
struct cmd_buffer_data *data;
self->data = data = xmalloc(sizeof *data);
data->chflags = 0;
data->target = NULL;
data->buffer = -1;
data->arg = NULL;
data->arg2 = NULL;
}
int
cmd_buffer_parse(struct cmd *self, int argc, char **argv, char **cause)
{
struct cmd_buffer_data *data;
const struct cmd_entry *entry = self->entry;
int opt, n;
const char *errstr;
cmd_buffer_init(self, 0);
data = self->data;
while ((opt = cmd_getopt(argc, argv, "b:t:", entry->chflags)) != -1) {
if (cmd_parse_flags(opt, entry->chflags, &data->chflags) == 0)
continue;
switch (opt) {
case 'b':
if (data->buffer == -1) {
n = strtonum(optarg, 0, INT_MAX, &errstr);
if (errstr != NULL) {
xasprintf(cause, "buffer %s", errstr);
goto error;
}
data->buffer = n;
}
break;
case 't':
if (data->target == NULL)
data->target = xstrdup(optarg);
break;
default:
goto usage;
}
}
argc -= optind;
argv += optind;
if (cmd_fill_argument(
self->entry->flags, &data->arg, &data->arg2, argc, argv) != 0)
goto usage;
return (0);
usage:
xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
error:
self->entry->free(self);
return (-1);
}
void
cmd_buffer_free(struct cmd *self)
{
struct cmd_buffer_data *data = self->data;
if (data->target != NULL)
xfree(data->target);
if (data->arg != NULL)
xfree(data->arg);
if (data->arg2 != NULL)
xfree(data->arg2);
xfree(data);
}
size_t
cmd_buffer_print(struct cmd *self, char *buf, size_t len)
{
struct cmd_buffer_data *data = self->data;
size_t off = 0;
off += xsnprintf(buf, len, "%s", self->entry->name);
if (data == NULL)
return (off);
off += cmd_print_flags(buf, len, off, data->chflags);
if (off < len && data->buffer != -1)
off += xsnprintf(buf + off, len - off, " -b %d", data->buffer);
if (off < len && data->target != NULL)
off += cmd_prarg(buf + off, len - off, " -t ", data->target);
if (off < len && data->arg != NULL)
off += cmd_prarg(buf + off, len - off, " ", data->arg);
if (off < len && data->arg2 != NULL)
off += cmd_prarg(buf + off, len - off, " ", data->arg2);
return (off);
}