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https://github.com/tmate-io/tmate.git
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3964309c67
commands and allow a command to block execution of subsequent commands. This allows run-shell and if-shell to be synchronous which has been much requested. Each client has a default command queue and commands are consumed one at a time from it. A command may suspend execution from the queue by returning CMD_RETURN_WAIT and then resume it by calling cmd_continue() - for example run-shell does this from the callback that is fired after the job is freed. When the command queue becomes empty, command clients are automatically exited (unless attaching). A callback is also fired - this is used for nested commands in, for example, if-shell which can block execution of the client's cmdq until a new cmdq becomes empty. Also merge all the old error/info/print functions together and lose the old curclient/cmdclient distinction - a cmdq is bound to one client (or none if in the configuration file), this is a command client if c->session is NULL otherwise an attached client.
120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
/* $Id$ */
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/*
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* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tmux.h"
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struct cmd_list *
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cmd_list_parse(int argc, char **argv, const char* file, u_int line,
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char **cause)
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{
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struct cmd_list *cmdlist;
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struct cmd *cmd;
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int i, lastsplit;
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size_t arglen, new_argc;
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char **copy_argv, **new_argv;
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copy_argv = cmd_copy_argv(argc, argv);
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cmdlist = xcalloc(1, sizeof *cmdlist);
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cmdlist->references = 1;
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TAILQ_INIT(&cmdlist->list);
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lastsplit = 0;
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for (i = 0; i < argc; i++) {
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arglen = strlen(copy_argv[i]);
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if (arglen == 0 || copy_argv[i][arglen - 1] != ';')
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continue;
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copy_argv[i][arglen - 1] = '\0';
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if (arglen > 1 && copy_argv[i][arglen - 2] == '\\') {
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copy_argv[i][arglen - 2] = ';';
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continue;
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}
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new_argc = i - lastsplit;
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new_argv = copy_argv + lastsplit;
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if (arglen != 1)
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new_argc++;
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cmd = cmd_parse(new_argc, new_argv, file, line, cause);
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if (cmd == NULL)
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goto bad;
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TAILQ_INSERT_TAIL(&cmdlist->list, cmd, qentry);
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lastsplit = i + 1;
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}
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if (lastsplit != argc) {
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cmd = cmd_parse(argc - lastsplit, copy_argv + lastsplit,
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file, line, cause);
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if (cmd == NULL)
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goto bad;
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TAILQ_INSERT_TAIL(&cmdlist->list, cmd, qentry);
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}
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cmd_free_argv(argc, copy_argv);
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return (cmdlist);
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bad:
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cmd_list_free(cmdlist);
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cmd_free_argv(argc, copy_argv);
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return (NULL);
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}
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void
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cmd_list_free(struct cmd_list *cmdlist)
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{
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struct cmd *cmd, *cmd1;
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if (--cmdlist->references != 0)
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return;
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TAILQ_FOREACH_SAFE(cmd, &cmdlist->list, qentry, cmd1) {
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TAILQ_REMOVE(&cmdlist->list, cmd, qentry);
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args_free(cmd->args);
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free(cmd->file);
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free(cmd);
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}
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free(cmdlist);
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}
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size_t
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cmd_list_print(struct cmd_list *cmdlist, char *buf, size_t len)
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{
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struct cmd *cmd;
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size_t off;
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off = 0;
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TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
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if (off >= len)
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break;
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off += cmd_print(cmd, buf + off, len - off);
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if (off >= len)
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break;
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if (TAILQ_NEXT(cmd, qentry) != NULL)
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off += xsnprintf(buf + off, len - off, " ; ");
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}
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return (off);
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}
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