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Start of improved buffer code. Only set-buffer/show-buffer commands so far.

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This commit is contained in:
Nicholas Marriott
2008-06-20 08:36:20 +00:00
parent af924e726a
commit 9798dcd4df
10 changed files with 483 additions and 8 deletions
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132
cmd-generic.c
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@ -1,4 +1,4 @@
/* $Id: cmd-generic.c,v 1.10 2008-06-18 22:21:51 nicm Exp $ */
/* $Id: cmd-generic.c,v 1.11 2008-06-20 08:36:20 nicm Exp $ */
/*
* Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@ -262,3 +262,133 @@ cmd_srcdst_print(struct cmd *self, char *buf, size_t len)
if (off < len && data->arg != NULL)
off += xsnprintf(buf + off, len - off, " %s", data->arg);
}
void
cmd_buffer_init(struct cmd *self, unused int key)
{
struct cmd_buffer_data *data;
self->data = data = xmalloc(sizeof *data);
data->flags = 0;
data->target = NULL;
data->buffer = -1;
data->arg = NULL;
}
int
cmd_buffer_parse(struct cmd *self, int argc, char **argv, char **cause)
{
struct cmd_buffer_data *data;
int opt, n;
const char *errstr;
cmd_buffer_init(self, 0);
data = self->data;
while ((opt = getopt(argc, argv, "b:dkt:")) != EOF) {
switch (opt) {
case 'b':
if (data->buffer == -1) {
n = strtonum(optarg, 0, INT_MAX, &errstr);
if (errstr != NULL) {
xasprintf(
cause, "buffer index %s", errstr);
goto error;
}
data->buffer = n;
}
break;
case 'd':
if (self->entry->flags & CMD_DFLAG) {
data->flags |= CMD_DFLAG;
break;
}
goto usage;
case 'k':
if (self->entry->flags & CMD_KFLAG) {
data->flags |= CMD_KFLAG;
break;
}
goto usage;
case 't':
if (data->target == NULL)
data->target = xstrdup(optarg);
break;
default:
goto usage;
}
}
argc -= optind;
argv += optind;
if (self->entry->flags & CMD_ONEARG) {
if (argc != 1)
goto usage;
data->arg = xstrdup(argv[0]);
} else {
if (argc != 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_send(struct cmd *self, struct buffer *b)
{
struct cmd_buffer_data *data = self->data;
buffer_write(b, data, sizeof *data);
cmd_send_string(b, data->target);
cmd_send_string(b, data->arg);
}
void
cmd_buffer_recv(struct cmd *self, struct buffer *b)
{
struct cmd_buffer_data *data;
self->data = data = xmalloc(sizeof *data);
buffer_read(b, data, sizeof *data);
data->target = cmd_recv_string(b);
data->arg = cmd_recv_string(b);
}
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);
xfree(data);
}
void
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;
if (off < len && data->flags & CMD_DFLAG)
off += xsnprintf(buf + off, len - off, " -d");
if (off < len && data->flags & CMD_KFLAG)
off += xsnprintf(buf + off, len - off, " -k");
if (off < len && data->buffer != -1)
off += xsnprintf(buf + off, len - off, " -b %d", data->buffer);
if (off < len && data->target != NULL)
off += xsnprintf(buf + off, len - off, " -t %s", data->target);
if (off < len && data->arg != NULL)
off += xsnprintf(buf + off, len - off, " %s", data->arg);
}