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Annotation of src/usr.bin/tmux/cmd-split-window.c, Revision 1.84

1.84    ! nicm        1: /* $OpenBSD: cmd-split-window.c,v 1.83 2017/04/22 10:22:39 nicm Exp $ */
1.1       nicm        2:
                      3: /*
1.68      nicm        4:  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1       nicm        5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18:
                     19: #include <sys/types.h>
                     20:
1.46      nicm       21: #include <errno.h>
                     22: #include <fcntl.h>
1.11      nicm       23: #include <paths.h>
1.1       nicm       24: #include <stdlib.h>
1.46      nicm       25: #include <string.h>
1.1       nicm       26: #include <unistd.h>
                     27:
                     28: #include "tmux.h"
                     29:
                     30: /*
                     31:  * Split a window (add a new pane).
                     32:  */
1.53      nicm       33:
                     34: #define SPLIT_WINDOW_TEMPLATE "#{session_name}:#{window_index}.#{pane_index}"
1.1       nicm       35:
1.75      nicm       36: static enum cmd_retval cmd_split_window_exec(struct cmd *,
                     37:                            struct cmdq_item *);
1.1       nicm       38:
                     39: const struct cmd_entry cmd_split_window_entry = {
1.66      nicm       40:        .name = "split-window",
                     41:        .alias = "splitw",
                     42:
1.70      nicm       43:        .args = { "bc:dfF:l:hp:Pt:v", 0, -1 },
                     44:        .usage = "[-bdfhvP] [-c start-directory] [-F format] "
1.66      nicm       45:                 "[-p percentage|-l size] " CMD_TARGET_PANE_USAGE " [command]",
                     46:
1.83      nicm       47:        .target = { 't', CMD_FIND_PANE, 0 },
1.67      nicm       48:
                     49:        .flags = 0,
1.66      nicm       50:        .exec = cmd_split_window_exec
1.1       nicm       51: };
                     52:
1.71      nicm       53: static enum cmd_retval
1.75      nicm       54: cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
1.1       nicm       55: {
1.82      nicm       56:        struct cmd_find_state   *current = &item->shared->current;
1.22      nicm       57:        struct args             *args = self->args;
1.83      nicm       58:        struct client           *c = cmd_find_client(item, NULL, 1);
                     59:        struct session          *s = item->target.s;
                     60:        struct winlink          *wl = item->target.wl;
1.65      nicm       61:        struct window           *w = wl->window;
1.83      nicm       62:        struct window_pane      *wp = item->target.wp, *new_wp = NULL;
1.60      nicm       63:        struct environ          *env;
1.61      nicm       64:        const char              *cmd, *path, *shell, *template, *cwd, *to_free;
1.50      nicm       65:        char                   **argv, *cause, *new_cause, *cp;
1.30      nicm       66:        u_int                    hlimit;
1.61      nicm       67:        int                      argc, size, percentage;
1.22      nicm       68:        enum layout_type         type;
                     69:        struct layout_cell      *lc;
1.49      nicm       70:        struct environ_entry    *envent;
1.73      nicm       71:        struct cmd_find_state    fs;
1.1       nicm       72:
1.41      nicm       73:        server_unzoom_window(w);
1.1       nicm       74:
1.50      nicm       75:        if (args->argc == 0) {
1.59      nicm       76:                cmd = options_get_string(s->options, "default-command");
1.50      nicm       77:                if (cmd != NULL && *cmd != '\0') {
                     78:                        argc = 1;
1.51      nicm       79:                        argv = (char **)&cmd;
1.50      nicm       80:                } else {
                     81:                        argc = 0;
                     82:                        argv = NULL;
                     83:                }
                     84:        } else {
                     85:                argc = args->argc;
                     86:                argv = args->argv;
                     87:        }
1.46      nicm       88:
1.61      nicm       89:        to_free = NULL;
1.46      nicm       90:        if (args_has(args, 'c')) {
1.79      nicm       91:                cwd = args_get(args, 'c');
                     92:                to_free = cwd = format_single(item, cwd, c, s, NULL, NULL);
1.75      nicm       93:        } else if (item->client != NULL && item->client->session == NULL)
                     94:                cwd = item->client->cwd;
1.46      nicm       95:        else
                     96:                cwd = s->cwd;
1.1       nicm       97:
1.15      nicm       98:        type = LAYOUT_TOPBOTTOM;
1.22      nicm       99:        if (args_has(args, 'h'))
1.15      nicm      100:                type = LAYOUT_LEFTRIGHT;
                    101:
1.5       nicm      102:        size = -1;
1.23      nicm      103:        if (args_has(args, 'l')) {
                    104:                size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
1.22      nicm      105:                if (cause != NULL) {
1.24      nicm      106:                        xasprintf(&new_cause, "size %s", cause);
1.34      nicm      107:                        free(cause);
1.24      nicm      108:                        cause = new_cause;
                    109:                        goto error;
1.22      nicm      110:                }
                    111:        } else if (args_has(args, 'p')) {
                    112:                percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
                    113:                if (cause != NULL) {
1.24      nicm      114:                        xasprintf(&new_cause, "percentage %s", cause);
1.34      nicm      115:                        free(cause);
1.24      nicm      116:                        cause = new_cause;
                    117:                        goto error;
1.22      nicm      118:                }
1.15      nicm      119:                if (type == LAYOUT_TOPBOTTOM)
1.22      nicm      120:                        size = (wp->sy * percentage) / 100;
1.15      nicm      121:                else
1.22      nicm      122:                        size = (wp->sx * percentage) / 100;
1.15      nicm      123:        }
1.59      nicm      124:        hlimit = options_get_number(s->options, "history-limit");
1.5       nicm      125:
1.59      nicm      126:        shell = options_get_string(s->options, "default-shell");
1.11      nicm      127:        if (*shell == '\0' || areshell(shell))
                    128:                shell = _PATH_BSHELL;
                    129:
1.70      nicm      130:        lc = layout_split_pane(wp, type, size, args_has(args, 'b'),
                    131:            args_has(args, 'f'));
1.54      nicm      132:        if (lc == NULL) {
1.5       nicm      133:                cause = xstrdup("pane too small");
                    134:                goto error;
1.1       nicm      135:        }
1.78      nicm      136:        new_wp = window_add_pane(w, wp, args_has(args, 'b'), hlimit);
1.57      nicm      137:        layout_assign_pane(lc, new_wp);
1.49      nicm      138:
                    139:        path = NULL;
1.75      nicm      140:        if (item->client != NULL && item->client->session == NULL)
                    141:                envent = environ_find(item->client->environ, "PATH");
1.49      nicm      142:        else
1.60      nicm      143:                envent = environ_find(s->environ, "PATH");
1.49      nicm      144:        if (envent != NULL)
                    145:                path = envent->value;
                    146:
1.84    ! nicm      147:        env = environ_for_session(s, 0);
1.60      nicm      148:        if (window_pane_spawn(new_wp, argc, argv, path, shell, cwd, env,
1.80      nicm      149:            s->tio, &cause) != 0) {
                    150:                environ_free(env);
1.19      nicm      151:                goto error;
1.80      nicm      152:        }
                    153:        environ_free(env);
1.5       nicm      154:
1.1       nicm      155:        server_redraw_window(w);
                    156:
1.22      nicm      157:        if (!args_has(args, 'd')) {
1.17      nicm      158:                window_set_active_pane(w, new_wp);
1.1       nicm      159:                session_select(s, wl->idx);
1.82      nicm      160:                cmd_find_from_session(current, s);
1.1       nicm      161:                server_redraw_session(s);
                    162:        } else
                    163:                server_status_session(s);
                    164:
1.22      nicm      165:        if (args_has(args, 'P')) {
1.33      nicm      166:                if ((template = args_get(args, 'F')) == NULL)
1.36      nicm      167:                        template = SPLIT_WINDOW_TEMPLATE;
1.79      nicm      168:                cp = format_single(item, template, c, s, wl, new_wp);
1.75      nicm      169:                cmdq_print(item, "%s", cp);
1.34      nicm      170:                free(cp);
1.21      nicm      171:        }
1.76      nicm      172:        notify_window("window-layout-changed", w);
1.72      nicm      173:
1.61      nicm      174:        if (to_free != NULL)
                    175:                free((void *)to_free);
1.73      nicm      176:
1.81      nicm      177:        cmd_find_from_winlink_pane(&fs, wl, new_wp);
1.75      nicm      178:        hooks_insert(s->hooks, item, &fs, "after-split-window");
1.74      nicm      179:
1.35      nicm      180:        return (CMD_RETURN_NORMAL);
1.5       nicm      181:
                    182: error:
1.57      nicm      183:        if (new_wp != NULL) {
                    184:                layout_close_pane(new_wp);
1.17      nicm      185:                window_remove_pane(w, new_wp);
1.57      nicm      186:        }
1.75      nicm      187:        cmdq_error(item, "create pane failed: %s", cause);
1.34      nicm      188:        free(cause);
1.61      nicm      189:
                    190:        if (to_free != NULL)
                    191:                free((void *)to_free);
1.35      nicm      192:        return (CMD_RETURN_ERROR);
1.1       nicm      193: }