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Annotation of src/usr.bin/tmux/control.c, Revision 1.5

1.5     ! nicm        1: /* $OpenBSD: control.c,v 1.4 2012/09/24 13:39:10 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2012 Nicholas Marriott <nicm@users.sourceforge.net>
                      5:  * Copyright (c) 2012 George Nachman <tmux@georgester.com>
                      6:  *
                      7:  * Permission to use, copy, modify, and distribute this software for any
                      8:  * purpose with or without fee is hereby granted, provided that the above
                      9:  * copyright notice and this permission notice appear in all copies.
                     10:  *
                     11:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     12:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     13:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     14:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     15:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     16:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     17:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     18:  */
                     19:
                     20: #include <sys/types.h>
                     21:
                     22: #include <event.h>
1.2       nicm       23: #include <stdlib.h>
1.1       nicm       24: #include <string.h>
                     25:
                     26: #include "tmux.h"
                     27:
                     28: void printflike2 control_msg_error(struct cmd_ctx *, const char *, ...);
                     29: void printflike2 control_msg_print(struct cmd_ctx *, const char *, ...);
                     30: void printflike2 control_msg_info(struct cmd_ctx *, const char *, ...);
                     31:
                     32: /* Command error callback. */
                     33: void printflike2
                     34: control_msg_error(struct cmd_ctx *ctx, const char *fmt, ...)
                     35: {
                     36:        struct client   *c = ctx->curclient;
                     37:        va_list          ap;
                     38:
                     39:        va_start(ap, fmt);
                     40:        evbuffer_add_vprintf(c->stdout_data, fmt, ap);
                     41:        va_end(ap);
                     42:
                     43:        evbuffer_add(c->stdout_data, "\n", 1);
                     44:        server_push_stdout(c);
                     45: }
                     46:
                     47: /* Command print callback. */
                     48: void printflike2
                     49: control_msg_print(struct cmd_ctx *ctx, const char *fmt, ...)
                     50: {
                     51:        struct client   *c = ctx->curclient;
                     52:        va_list          ap;
                     53:
                     54:        va_start(ap, fmt);
                     55:        evbuffer_add_vprintf(c->stdout_data, fmt, ap);
                     56:        va_end(ap);
                     57:
                     58:        evbuffer_add(c->stdout_data, "\n", 1);
                     59:        server_push_stdout(c);
                     60: }
                     61:
                     62: /* Command info callback. */
                     63: void printflike2
                     64: control_msg_info(unused struct cmd_ctx *ctx, unused const char *fmt, ...)
                     65: {
                     66: }
                     67:
                     68: /* Write a line. */
                     69: void printflike2
                     70: control_write(struct client *c, const char *fmt, ...)
                     71: {
                     72:        va_list          ap;
                     73:
                     74:        va_start(ap, fmt);
                     75:        evbuffer_add_vprintf(c->stdout_data, fmt, ap);
                     76:        va_end(ap);
                     77:
1.4       nicm       78:        evbuffer_add(c->stdout_data, "\n", 1);
                     79:        server_push_stdout(c);
                     80: }
                     81:
                     82: /* Write a buffer, adding a terminal newline. Empties buffer. */
                     83: void
                     84: control_write_buffer(struct client *c, struct evbuffer *buffer)
                     85: {
                     86:        evbuffer_add_buffer(c->stdout_data, buffer);
1.1       nicm       87:        evbuffer_add(c->stdout_data, "\n", 1);
                     88:        server_push_stdout(c);
                     89: }
                     90:
                     91: /* Control input callback. Read lines and fire commands. */
                     92: void
                     93: control_callback(struct client *c, int closed, unused void *data)
                     94: {
                     95:        char            *line, *cause;
1.5     ! nicm       96:        struct cmd_ctx  *ctx;
1.1       nicm       97:        struct cmd_list *cmdlist;
                     98:
                     99:        if (closed)
                    100:                c->flags |= CLIENT_EXIT;
                    101:
                    102:        for (;;) {
                    103:                line = evbuffer_readln(c->stdin_data, NULL, EVBUFFER_EOL_LF);
                    104:                if (line == NULL)
                    105:                        break;
                    106:                if (*line == '\0') { /* empty line exit */
                    107:                        c->flags |= CLIENT_EXIT;
                    108:                        break;
                    109:                }
                    110:
1.5     ! nicm      111:                ctx = cmd_get_ctx();
        !           112:                ctx->msgdata = NULL;
        !           113:                ctx->cmdclient = NULL;
        !           114:                ctx->curclient = c;
        !           115:
        !           116:                ctx->error = control_msg_error;
        !           117:                ctx->print = control_msg_print;
        !           118:                ctx->info = control_msg_info;
1.1       nicm      119:
                    120:                if (cmd_string_parse(line, &cmdlist, &cause) != 0) {
                    121:                        control_write(c, "%%error in line \"%s\": %s", line,
                    122:                            cause);
1.2       nicm      123:                        free(cause);
1.1       nicm      124:                } else {
1.5     ! nicm      125:                        cmd_list_exec(cmdlist, ctx);
1.1       nicm      126:                        cmd_list_free(cmdlist);
                    127:                }
1.5     ! nicm      128:                cmd_free_ctx(ctx);
1.1       nicm      129:
1.2       nicm      130:                free(line);
1.1       nicm      131:        }
                    132: }