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/* $OpenBSD$ */
/*
* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
*
* 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 <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "tmux.h"
/*
* Saves a paste buffer to a file.
*/
enum cmd_retval cmd_save_buffer_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_save_buffer_entry = {
.name = "save-buffer",
.alias = "saveb",
.args = { "ab:", 1, 1 },
.usage = "[-a] " CMD_BUFFER_USAGE " path",
.flags = 0,
.exec = cmd_save_buffer_exec
};
const struct cmd_entry cmd_show_buffer_entry = {
.name = "show-buffer",
.alias = "showb",
.args = { "b:", 0, 0 },
.usage = CMD_BUFFER_USAGE,
.flags = 0,
.exec = cmd_save_buffer_exec
};
enum cmd_retval
cmd_save_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
struct client *c = cmdq->client;
struct session *s;
struct paste_buffer *pb;
const char *path, *bufname, *bufdata, *start, *end, *cwd;
const char *flags;
char *msg, *file, resolved[PATH_MAX];
size_t size, used, msglen, bufsize;
FILE *f;
if (!args_has(args, 'b')) {
if ((pb = paste_get_top(NULL)) == NULL) {
cmdq_error(cmdq, "no buffers");
return (CMD_RETURN_ERROR);
}
} else {
bufname = args_get(args, 'b');
pb = paste_get_name(bufname);
if (pb == NULL) {
cmdq_error(cmdq, "no buffer %s", bufname);
return (CMD_RETURN_ERROR);
}
}
bufdata = paste_buffer_data(pb, &bufsize);
if (self->entry == &cmd_show_buffer_entry)
path = "-";
else
path = args->argv[0];
if (strcmp(path, "-") == 0) {
if (c == NULL) {
cmdq_error(cmdq, "can't write to stdout");
return (CMD_RETURN_ERROR);
}
if (c->session == NULL || (c->flags & CLIENT_CONTROL))
goto do_stdout;
goto do_print;
}
if (c != NULL && c->session == NULL && c->cwd != NULL)
cwd = c->cwd;
else if ((s = c->session) != NULL && s->cwd != NULL)
cwd = s->cwd;
else
cwd = ".";
flags = "wb";
if (args_has(self->args, 'a'))
flags = "ab";
if (*path == '/')
file = xstrdup(path);
else
xasprintf(&file, "%s/%s", cwd, path);
if (realpath(file, resolved) == NULL &&
strlcpy(resolved, file, sizeof resolved) >= sizeof resolved) {
cmdq_error(cmdq, "%s: %s", file, strerror(ENAMETOOLONG));
return (CMD_RETURN_ERROR);
}
f = fopen(resolved, flags);
free(file);
if (f == NULL) {
cmdq_error(cmdq, "%s: %s", resolved, strerror(errno));
return (CMD_RETURN_ERROR);
}
if (fwrite(bufdata, 1, bufsize, f) != bufsize) {
cmdq_error(cmdq, "%s: write error", resolved);
fclose(f);
return (CMD_RETURN_ERROR);
}
fclose(f);
return (CMD_RETURN_NORMAL);
do_stdout:
evbuffer_add(c->stdout_data, bufdata, bufsize);
server_client_push_stdout(c);
return (CMD_RETURN_NORMAL);
do_print:
if (bufsize > (INT_MAX / 4) - 1) {
cmdq_error(cmdq, "buffer too big");
return (CMD_RETURN_ERROR);
}
msg = NULL;
used = 0;
while (used != bufsize) {
start = bufdata + used;
end = memchr(start, '\n', bufsize - used);
if (end != NULL)
size = end - start;
else
size = bufsize - used;
msglen = size * 4 + 1;
msg = xrealloc(msg, msglen);
strvisx(msg, start, size, VIS_OCTAL|VIS_TAB);
cmdq_print(cmdq, "%s", msg);
used += size + (end != NULL);
}
free(msg);
return (CMD_RETURN_NORMAL);
}
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