diff options
Diffstat (limited to 'cmd-find.c')
| -rw-r--r-- | cmd-find.c | 1114 |
1 files changed, 1114 insertions, 0 deletions
diff --git a/cmd-find.c b/cmd-find.c new file mode 100644 index 00000000..a71968a1 --- /dev/null +++ b/cmd-find.c @@ -0,0 +1,1114 @@ +/* $OpenBSD$ */ + +/* + * Copyright (c) 2015 Nicholas Marriott <nicm@users.sourceforge.net> + * + * 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 <fnmatch.h> +#include <limits.h> +#include <stdlib.h> +#include <string.h> +#include <paths.h> + +#include "tmux.h" + +#define CMD_FIND_PREFER_UNATTACHED 0x1 +#define CMD_FIND_QUIET 0x2 +#define CMD_FIND_WINDOW_INDEX 0x4 + +enum cmd_find_type { + CMD_FIND_PANE, + CMD_FIND_WINDOW, + CMD_FIND_SESSION, +}; + +struct cmd_find_state { + struct cmd_q *cmdq; + int flags; + struct cmd_find_state *current; + + struct session *s; + struct winlink *wl; + struct window *w; + struct window_pane *wp; + int idx; +}; + +int cmd_find_client_better(struct client *, struct client *); +struct client *cmd_find_best_client(struct client **, u_int); +int cmd_find_session_better(struct session *, struct session *, + int); +struct session *cmd_find_best_session(struct session **, u_int, int); +int cmd_find_best_session_with_window(struct cmd_find_state *); +int cmd_find_best_winlink_with_window(struct cmd_find_state *); + +int cmd_find_current_session_with_client(struct cmd_find_state *); +int cmd_find_current_session(struct cmd_find_state *); +struct client *cmd_find_current_client(struct cmd_q *); + +const char *cmd_find_map_table(const char *[][2], const char *); + +int cmd_find_get_session(struct cmd_find_state *, const char *); +int cmd_find_get_window(struct cmd_find_state *, const char *); +int cmd_find_get_window_with_session(struct cmd_find_state *, const char *); +int cmd_find_get_window_with_pane(struct cmd_find_state *); +int cmd_find_get_pane(struct cmd_find_state *, const char *); +int cmd_find_get_pane_with_session(struct cmd_find_state *, const char *); +int cmd_find_get_pane_with_window(struct cmd_find_state *, const char *); + +void cmd_find_clear_state(struct cmd_find_state *, struct cmd_q *, int); +void cmd_find_log_state(const char *, const char *, struct cmd_find_state *); + +struct cmd_find_state *cmd_find_target(struct cmd_q *, const char *, + enum cmd_find_type, int); + +const char *cmd_find_session_table[][2] = { + { NULL, NULL } +}; +const char *cmd_find_window_table[][2] = { + { "{start}", "^" }, + { "{last}", "!" }, + { "{end}", "$" }, + { "{next}", "+" }, + { "{previous}", "-" }, + { NULL, NULL } +}; +const char *cmd_find_pane_table[][2] = { + { "{last}", "!" }, + { "{next}", "+" }, + { "{previous}", "-" }, + { "{top}", "top" }, + { "{bottom}", "bottom" }, + { "{left}", "left" }, + { "{right}", "right" }, + { "{top-left}", "top-left" }, + { "{top-right}", "top-right" }, + { "{bottom-left}", "bottom-left" }, + { "{bottom-right}", "bottom-right" }, + { "{up}", "{up}" }, + { "{down}", "{down}" }, + { "{left}", "{left}" }, + { "{right}", "{right}" }, + { NULL, NULL } +}; + +/* Is this client better? */ +int +cmd_find_client_better(struct client *c, struct client *than) +{ + if (than == NULL) + return (1); + return (timercmp(&c->activity_time, &than->activity_time, >)); +} + +/* Find best client from a list, or all if list is NULL. */ +struct client * +cmd_find_best_client(struct client **clist, u_int csize) +{ + struct client *c_loop, *c; + u_int i; + + c = NULL; + if (clist != NULL) { + for (i = 0; i < csize; i++) { + if (cmd_find_client_better(clist[i], c)) + c = clist[i]; + } + } else { + TAILQ_FOREACH(c_loop, &clients, entry) { + if (cmd_find_client_better(c_loop, c)) + c_loop = c; + } + } + return (c); +} + +/* Is this session better? */ +int +cmd_find_session_better(struct session *s, struct session *than, int flags) +{ + int attached; + + if (than == NULL) + return (1); + if (flags & CMD_FIND_PREFER_UNATTACHED) { + attached = (~than->flags & SESSION_UNATTACHED); + if (attached && (s->flags & SESSION_UNATTACHED)) + return (1); + else if (!attached && (~s->flags & SESSION_UNATTACHED)) + return (0); + } + return (timercmp(&s->activity_time, &than->activity_time, >)); +} + +/* Find best session from a list, or all if list is NULL. */ +struct session * +cmd_find_best_session(struct session **slist, u_int ssize, int flags) +{ + struct session *s_loop, *s; + u_int i; + + s = NULL; + if (slist != NULL) { + for (i = 0; i < ssize; i++) { + if (cmd_find_session_better(slist[i], s, flags)) + s = slist[i]; + } + } else { + RB_FOREACH(s_loop, sessions, &sessions) { + if (cmd_find_session_better(s_loop, s, flags)) + s = s_loop; + } + } + return (s); +} + +/* Find best session and winlink for window. */ +int +cmd_find_best_session_with_window(struct cmd_find_state *fs) +{ + struct session **slist = NULL; + u_int ssize; + struct session *s; + + ssize = 0; + RB_FOREACH(s, sessions, &sessions) { + if (!session_has(s, fs->w)) + continue; + slist = xreallocarray (slist, ssize + 1, sizeof *slist); + slist[ssize++] = s; + } + if (ssize == 0) + goto fail; + fs->s = cmd_find_best_session(slist, ssize, fs->flags); + if (fs->s == NULL) + goto fail; + free (slist); + return (cmd_find_best_winlink_with_window(fs)); + +fail: + free(slist); + return (-1); +} + +/* + * Find the best winlink for a window (the current if it contains the pane, + * otherwise the first). + */ +int +cmd_find_best_winlink_with_window(struct cmd_find_state *fs) +{ + struct winlink *wl, *wl_loop; + + wl = NULL; + if (fs->s->curw->window == fs->w) + wl = fs->s->curw; + else { + RB_FOREACH(wl_loop, winlinks, &fs->s->windows) { + if (wl_loop->window == fs->w) { + wl = wl_loop; + break; + } + } + } + if (wl == NULL) + return (-1); + fs->wl = wl; + fs->idx = fs->wl->idx; + return (0); +} + +/* Find current session when we have an unattached client. */ +int +cmd_find_current_session_with_client(struct cmd_find_state *fs) +{ + struct window_pane *wp; + + /* If this is running in a pane, that's great. */ + RB_FOREACH(wp, window_pane_tree, &all_window_panes) { + if (strcmp(wp->tty, fs->cmdq->client->tty.path) == 0) + break; + } + + /* Not running in a pane. We know nothing. Find the best session. */ + if (wp == NULL) { + fs->s = cmd_find_best_session(NULL, 0, fs->flags); + if (fs->s == NULL) + return (-1); + fs->wl = fs->s->curw; + fs->idx = fs->wl->idx; + fs->w = fs->wl->window; + fs->wp = fs->w->active; + return (0); + } + + /* We now know the window and pane. */ + fs->w = wp->window; + fs->wp = wp; + + /* Find the best session and winlink. */ + if (cmd_find_best_session_with_window(fs) != 0) + return (-1); + return (0); +} + +/* + * Work out the best current state. If this function succeeds, the state is + * guaranteed to be completely filled in. + */ +int +cmd_find_current_session(struct cmd_find_state *fs) +{ + /* If we know the current client, use it. */ + if (fs->cmdq->client != NULL) { + if (fs->cmdq->client->session == NULL) + return (cmd_find_current_session_with_client(fs)); + fs->s = fs->cmdq->client->session; + fs->wl = fs->s->curw; + fs->idx = fs->wl->idx; + fs->w = fs->wl->window; + fs->wp = fs->w->active; + return (0); + } + + /* We know nothing, find the best session and client. */ + fs->s = cmd_find_best_session(NULL, 0, fs->flags); + if (fs->s == NULL) + return (-1); + fs->wl = fs->s->curw; + fs->idx = fs->wl->idx; + fs->w = fs->wl->window; + fs->wp = fs->w->active; + + return (0); +} + +/* Work out the best current client. */ +struct client * +cmd_find_current_client(struct cmd_q *cmdq) +{ + struct cmd_find_state current; + struct session *s; + struct client *c, **clist = NULL; + u_int csize; + + /* If the queue client has a session, use it. */ + if (cmdq->client != NULL && cmdq->client->session != NULL) + return (cmdq->client); + + /* Otherwise find the current session. */ + cmd_find_clear_state(¤t, cmdq, 0); + if (cmd_find_current_session(¤t) != 0) + return (NULL); + + /* If it is attached, find the best of it's clients. */ + s = current.s; + if (~s->flags & SESSION_UNATTACHED) { + csize = 0; + TAILQ_FOREACH(c, &clients, entry) { + if (c->session != s) + continue; + clist = xreallocarray (clist, csize + 1, sizeof *clist); + clist[csize++] = c; + } + if (csize != 0) { + c = cmd_find_best_client(clist, csize); + if (c != NULL) { + free(clist); + return (c); + } + } + free(clist); + } + + /* Otherwise pick best of all clients. */ + return (cmd_find_best_client(NULL, 0)); +} + +/* Maps string in table. */ +const char * +cmd_find_map_table(const char *table[][2], const char *s) +{ + u_int i; + + for (i = 0; table[i][0] != NULL; i++) { + if (strcmp(s, table[i][0]) == 0) + return (table[i][1]); + } + return (s); +} + +/* Find session from string. Fills in s. */ +int +cmd_find_get_session(struct cmd_find_state *fs, const char *session) +{ + struct session *s, *s_loop; + + log_debug("%s: %s", __func__, session); + + /* Check for session ids starting with $. */ + if (*session == '$') { + fs->s = session_find_by_id_str(session); + if (fs->s == NULL) + return (-1); + return (0); + } + + /* Look for exactly this session. */ + fs->s = session_find(session); + if (fs->s != NULL) + return (0); + + /* Otherwise look for prefix. */ + s = NULL; + RB_FOREACH(s_loop, sessions, &sessions) { + if (strncmp(session, s_loop->name, strlen(session)) == 0) { + if (s != NULL) + return (-1); + s = s_loop; + } + } + if (s != NULL) { + fs->s = s; + return (0); + } + + /* Then as a pattern. */ + s = NULL; + RB_FOREACH(s_loop, sessions, &sessions) { + if (fnmatch(session, s_loop->name, 0) == 0) { + if (s != NULL) + return (-1); + s = s_loop; + } + } + if (s != NULL) { + fs->s = s; + return (0); + } + + return (-1); +} + +/* Find window from string. Fills in s, wl, w. */ +int +cmd_find_get_window(struct cmd_find_state *fs, const char *window) +{ + log_debug("%s: %s", __func__, window); + + /* Check for window ids starting with @. */ + if (*window == '@') { + fs->w = window_find_by_id_str(window); + if (fs->w == NULL) + return (-1); + return (cmd_find_best_session_with_window(fs)); + } + + /* Not a window id, so use the current session. */ + fs->s = fs->current->s; + + /* We now only need to find the winlink in this session. */ + return (cmd_find_get_window_with_session(fs, window)); +} + +/* + * Find window from string, assuming it is in given session. Needs s, fills in + * wl and w. + */ +int +cmd_find_get_window_with_session(struct cmd_find_state *fs, const char *window) +{ + struct winlink *wl; + const char *errstr; + int idx, n; + struct session *s; + + log_debug("%s: %s", __func__, window); + + /* Check for window ids starting with @. */ + if (*window == '@') { + fs->w = window_find_by_id_str(window); + if (fs->w == NULL || !session_has(fs->s, fs->w)) + return (-1); + return (cmd_find_best_winlink_with_window(fs)); + } + + /* Try as an offset. */ + if (window[0] == '+' || window[0] == '-') { + if (window[1] != '\0') + n = strtonum(window + 1, 1, INT_MAX, NULL); + else + n = 1; + s = fs->s; + if (fs->flags & CMD_FIND_WINDOW_INDEX) { + if (window[0] == '+') { + if (INT_MAX - s->curw->idx < n) + return (-1); + fs->idx = s->curw->idx + n; + } else { + if (n < s->curw->idx) + return (-1); + fs->idx = s->curw->idx - n; + } + return (0); + } + if (window[0] == '+') + fs->wl = winlink_next_by_number(s->curw, s, n); + else + fs->wl = winlink_previous_by_number(s->curw, s, n); + if (fs->wl != NULL) { + fs->idx = fs->wl->idx; + fs->w = fs->wl->window; + return (0); + } + } + + /* Try special characters. */ + if (strcmp(window, "!") == 0) { + fs->wl = TAILQ_FIRST(&fs->s->lastw); + if (fs->wl == NULL) + return (-1); + fs->idx = fs->wl->idx; + fs->w = fs->wl->window; + return (0); + } else if (strcmp(window, "^") == 0) { + fs->wl = RB_MIN(winlinks, &fs->s->windows); + if (fs->wl == NULL) + return (-1); + fs->idx = fs->wl->idx; + fs->w = fs->wl->window; + return (0); + } else if (strcmp(window, "$") == 0) { + fs->wl = RB_MAX(winlinks, &fs->s->windows); + if (fs->wl == NULL) + return (-1); + fs->idx = fs->wl->idx; + fs->w = fs->wl->window; + return (0); + } + + /* First see if this is a valid window index in this session. */ + idx = strtonum(window, 0, INT_MAX, &errstr); + if (errstr == NULL) { + if (fs->flags & CMD_FIND_WINDOW_INDEX) { + fs->idx = idx; + return (0); + } + fs->wl = winlink_find_by_index(&fs->s->windows, idx); + if (fs->wl != NULL) { + fs->w = fs->wl->window; + return (0); + } + } + + /* Look for exact matches, error if more than one. */ + fs->wl = NULL; + RB_FOREACH(wl, winlinks, &fs->s->windows) { + if (strcmp(window, wl->window->name) == 0) { + if (fs->wl != NULL) + return (-1); + fs->wl = wl; + } + } + if (fs->wl != NULL) { + fs->idx = fs->wl->idx; + fs->w = fs->wl->window; + return (0); + } + + /* Try as the start of a window name, error if multiple. */ + fs->wl = NULL; + RB_FOREACH(wl, winlinks, &fs->s->windows) { + if (strncmp(window, wl->window->name, strlen(window)) == 0) { + if (fs->wl != NULL) + return (-1); + fs->wl = wl; + } + } + if (fs->wl != NULL) { + fs->idx = fs->wl->idx; + fs->w = fs->wl->window; + return (0); + } + + /* Now look for pattern matches, again error if multiple. */ + fs->wl = NULL; + RB_FOREACH(wl, winlinks, &fs->s->windows) { + if (fnmatch(window, wl->window->name, 0) == 0) { + if (fs->wl != NULL) + return (-1); + fs->wl = wl; + } + } + if (fs->wl != NULL) { + fs->idx = fs->wl->idx; + fs->w = fs->wl->window; + return (0); + } + + return (-1); +} + +/* Find window from given pane. Needs wp, fills in s and wl and w. */ +int +cmd_find_get_window_with_pane(struct cmd_find_state *fs) +{ + log_debug("%s", __func__); + + fs->w = fs->wp->window; + return (cmd_find_best_session_with_window(fs)); +} + +/* Find pane from string. Fills in s, wl, w, wp. */ +int +cmd_find_get_pane(struct cmd_find_state *fs, const char *pane) +{ + log_debug("%s: %s", __func__, pane); + + /* Check for pane ids starting with %. */ + if (*pane == '%') { + fs->wp = window_pane_find_by_id_str(pane); + if (fs->wp == NULL) + return (-1); + fs->w = fs->wp->window; + return (cmd_find_best_session_with_window(fs)); + } + + /* Not a pane id, so use the current session and window. */ + fs->s = fs->current->s; + fs->wl = fs->current->wl; + fs->idx = fs->current->idx; + fs->w = fs->current->w; + + /* We now only need to find the pane in this window. */ + return (cmd_find_get_pane_with_window(fs, pane)); +} + +/* + * Find pane from string, assuming it is in given session. Needs s, fills in wl + * and w and wp. + */ +int +cmd_find_get_pane_with_session(struct cmd_find_state *fs, const char *pane) +{ + log_debug("%s: %s", __func__, pane); + + /* Check for pane ids starting with %. */ + if (*pane == '%') { + fs->wp = window_pane_find_by_id_str(pane); + if (fs->wp == NULL) + return (-1); + fs->w = fs->wp->window; + return (cmd_find_best_winlink_with_window(fs)); + } + + /* Otherwise use the current window. */ + fs->wl = fs->s->curw; + fs->idx = fs->wl->idx; + fs->w = fs->wl->window; + + /* Now we just need to look up the pane. */ + return (cmd_find_get_pane_with_window(fs, pane)); +} + +/* + * Find pane from string, assuming it is in the given window. Needs w, fills in + * wp. + */ +int +cmd_find_get_pane_with_window(struct cmd_find_state *fs, const char *pane) +{ + const char *errstr; + int idx; + struct window_pane *wp; + u_int n; + + log_debug("%s: %s", __func__, pane); + + /* Check for pane ids starting with %. */ + if (*pane == '%') { + fs->wp = window_pane_find_by_id_str(pane); + if (fs->wp == NULL || fs->wp->window != fs->w) + return (-1); + return (0); + } + + /* Try special characters. */ + if (strcmp(pane, "!") == 0) { + if (fs->w->last == NULL) + return (-1); + fs->wp = fs->w->last; + return (0); + } else if (strcmp(pane, "{up}") == 0) { + fs->wp = window_pane_find_up(fs->w->active); + if (fs->wp == NULL) + return (-1); + return (0); + } else if (strcmp(pane, "{down}") == 0) { + fs->wp = window_pane_find_down(fs->w->active); + if (fs->wp == NULL) + return (-1); + return (0); + } else if (strcmp(pane, "{left}") == 0) { + fs->wp = window_pane_find_left(fs->w->active); + if (fs->wp == NULL) + return (-1); + return (0); + } else if (strcmp(pane, "{right}") == 0) { + fs->wp = window_pane_find_right(fs->w->active); + if (fs->wp == NULL) + return (-1); + return (0); + } + + /* Try as an offset. */ + if (pane[0] == '+' || pane[0] == '-') { + if (pane[1] != '\0') + n = strtonum(pane + 1, 1, INT_MAX, NULL); + else + n = 1; + wp = fs->w->active; + if (pane[0] == '+') + fs->wp = window_pane_next_by_number(fs->w, wp, n); + else + fs->wp = window_pane_previous_by_number(fs->w, wp, n); + if (fs->wp != NULL) + return (0); + } + + /* Get pane by index. */ + idx = strtonum(pane, 0, INT_MAX, &errstr); + if (errstr == NULL) { + fs->wp = window_pane_at_index(fs->w, idx); + if (fs->wp != NULL) + return (0); + } + + /* Try as a description. */ + fs->wp = window_find_string(fs->w, pane); + if (fs->wp != NULL) + return (0); + + return (-1); +} + +/* Clear state. */ +void +cmd_find_clear_state(struct cmd_find_state *fs, struct cmd_q *cmdq, int flags) +{ + memset (fs, 0, sizeof *fs); + + fs->cmdq = cmdq; + fs->flags = flags; + + fs->idx = -1; +} + +/* Split target into pieces and resolve for the given type. */ +struct cmd_find_state * +cmd_find_target(struct cmd_q *cmdq, const char *target, enum cmd_find_type type, + int flags) +{ + static struct cmd_find_state fs, current; + struct mouse_event *m; + char *colon, *period, *copy = NULL; + const char *session, *window, *pane; + + /* Find current state. */ + cmd_find_clear_state(¤t, cmdq, flags); + if (cmd_find_current_session(¤t) != 0) { + if (~flags & CMD_FIND_QUIET) + cmdq_error(cmdq, "no current session"); + goto error; + } + + /* Clear new state. */ + cmd_find_clear_state(&fs, cmdq, flags); + fs.current = ¤t; + + /* An empty or NULL target is the current. */ + if (target == NULL || *target == '\0') + goto current; + + /* Mouse target is a plain = or {mouse}. */ + if (strcmp(target, "=") == 0 || strcmp(target, "{mouse}") == 0) { + m = &cmdq->item->mouse; + switch (type) { + case CMD_FIND_PANE: + fs.wp = cmd_mouse_pane(m, &fs.s, &fs.wl); + if (fs.wp != NULL) + fs.w = fs.wl->window; + break; + case CMD_FIND_WINDOW: + case CMD_FIND_SESSION: + fs.wl = cmd_mouse_window(m, &fs.s); + if (fs.wl != NULL) { + fs.w = fs.wl->window; + fs.wp = fs.w->active; + } + break; + } + if (fs.wp == NULL) { + if (~flags & CMD_FIND_QUIET) + cmdq_error(cmdq, "no mouse target"); + goto error; + } + return (&fs); + } + copy = xstrdup(target); + + /* Find separators if they exist. */ + colon = strchr(copy, ':'); + if (colon != NULL) + *colon++ = '\0'; + if (colon == NULL) + period = strchr(copy, '.'); + else + period = strchr(colon, '.'); + if (period != NULL) + *period++ = '\0'; + + /* Set session, window and pane parts. */ + session = window = pane = NULL; + if (colon != NULL && period != NULL) { + session = copy; + window = colon; + pane = period; + } else if (colon != NULL && period == NULL) { + session = copy; + window = colon; + } else if (colon == NULL && period != NULL) { + window = copy; + pane = period; + } else { + if (*copy == '$') + session = copy; + else if (*copy == '@') + window = copy; + else if (*copy == '%') + pane = copy; + else { + switch (type) { + case CMD_FIND_SESSION: + session = copy; + break; + case CMD_FIND_WINDOW: + window = copy; + break; + case CMD_FIND_PANE: + pane = copy; + break; + } + } + } + + /* Empty is the same as NULL. */ + if (session != NULL && *session == '\0') + session = NULL; + if (window != NULL && *window == '\0') + window = NULL; + if (pane != NULL && *pane == '\0') + pane = NULL; + + /* Map though conversion table. */ + if (session != NULL) + session = cmd_find_map_table(cmd_find_session_table, session); + if (window != NULL) + window = cmd_find_map_table(cmd_find_window_table, window); + if (pane != NULL) + pane = cmd_find_map_table(cmd_find_pane_table, pane); + + log_debug("target %s (flags %#x): session=%s, window=%s, pane=%s", + target, flags, session == NULL ? "none" : session, + window == NULL ? "none" : window, pane == NULL ? "none" : pane); + + /* No pane is allowed if want an index. */ + if (pane != NULL && (flags & CMD_FIND_WINDOW_INDEX)) { + if (~flags & CMD_FIND_QUIET) + cmdq_error(cmdq, "can't specify pane here"); + goto error; + } + + /* If the session isn't NULL, look it up. */ + if (session != NULL) { + /* This will fill in session. */ + if (cmd_find_get_session(&fs, session) != 0) + goto no_session; + + /* If window and pane are NULL, use that session's current. */ + if (window == NULL && pane == NULL) { + fs.wl = fs.s->curw; + fs.idx = -1; + fs.w = fs.wl->window; + fs.wp = fs.w->active; + goto found; + } + + /* If window is present but pane not, find window in session. */ + if (window != NULL && pane == NULL) { + /* This will fill in winlink and window. */ + if (cmd_find_get_window_with_session(&fs, window) != 0) + goto no_window; + if (~flags & CMD_FIND_WINDOW_INDEX) + fs.wp = fs.wl->window->active; + goto found; + } + + /* If pane is present but window not, find pane. */ + if (window == NULL && pane != NULL) { + /* This will fill in winlink and window and pane. */ + if (cmd_find_get_pane_with_session(&fs, pane) != 0) + goto no_pane; + goto found; + } + + /* + * If window and pane are present, find both in session. This + * will fill in winlink and window. + */ + if (cmd_find_get_window_with_session(&fs, window) != 0) + goto no_window; + /* This will fill in pane. */ + if (cmd_find_get_pane_with_window(&fs, pane) != 0) + goto no_pane; + goto found; + } + + /* No session. If window and pane, try them. */ + if (window != NULL && pane != NULL) { + /* This will fill in session, winlink and window. */ + if (cmd_find_get_window(&fs, window) != 0) + goto no_window; + /* This will fill in pane. */ + if (cmd_find_get_pane_with_window(&fs, pane) != 0) + goto no_pane; + goto found; + } + + /* If just window is present, try it. */ + if (window != NULL && pane == NULL) { + /* This will fill in session, winlink and window. */ + if (cmd_find_get_window(&fs, window) != 0) + goto no_window; + if (~flags & CMD_FIND_WINDOW_INDEX) + fs.wp = fs.wl->window->active; + goto found; + } + + /* If just pane is present, try it. */ + if (window == NULL && pane != NULL) { + /* This will fill in session, winlink, window and pane. */ + if (cmd_find_get_pane(&fs, pane) != 0) + goto no_pane; + goto found; + } + +current: + /* None is the current session. */ + free(copy); + if (flags & CMD_FIND_WINDOW_INDEX) + current.idx = -1; + return (¤t); + +error: + free(copy); + return (NULL); + +found: + free(copy); + return (&fs); + +no_session: + if (~flags & CMD_FIND_QUIET) + cmdq_error(cmdq, "can't find session %s", session); + goto error; + +no_window: + if (~flags & CMD_FIND_QUIET) + cmdq_error(cmdq, "can't find window %s", window); + goto error; + +no_pane: + if (~flags & CMD_FIND_QUIET) + cmdq_error(cmdq, "can't find pane %s", pane); + goto error; +} + +/* Log the result. */ +void +cmd_find_log_state(const char *f, const char *target, struct cmd_find_state *fs) +{ + log_debug("%s: target %s%s", f, target == NULL ? "none" : target, + fs != NULL ? "" : " (failed)"); + if (fs == NULL) + return; + if (fs->s != NULL) + log_debug("\ts=$%u", fs->s->id); + else + log_debug("\ts=none"); + if (fs->wl != NULL) { + log_debug("\twl=%u %d w=@%u %s", fs->wl->idx, + fs->wl->window == fs->w, fs->w->id, fs->w->name); + } else + log_debug("\twl=none"); + if (fs->wp != NULL) + log_debug("\twp=%%%u", fs->wp->id); + else + log_debug("\twp=none"); + if (fs->idx != -1) + log_debug("\tidx=%d", fs->idx); + else + log_debug("\tidx=none"); +} + +/* Find the current session. */ +struct session * +cmd_find_current(struct cmd_q *cmdq) +{ + struct cmd_find_state *fs; + int flags = CMD_FIND_QUIET; + + fs = cmd_find_target(cmdq, NULL, CMD_FIND_SESSION, flags); + cmd_find_log_state(__func__, NULL, fs); + if (fs == NULL) + return (NULL); + + return (fs->s); +} + +/* Find the target session or report an error and return NULL. */ +struct session * +cmd_find_session(struct cmd_q *cmdq, const char *target, int prefer_unattached) +{ + struct cmd_find_state *fs; + int flags = 0; + + if (prefer_unattached) + flags |= CMD_FIND_PREFER_UNATTACHED; + + fs = cmd_find_target(cmdq, target, CMD_FIND_SESSION, flags); + cmd_find_log_state(__func__, target, fs); + if (fs == NULL) + return (NULL); + + return (fs->s); +} + +/* Find the target window or report an error and return NULL. */ +struct winlink * +cmd_find_window(struct cmd_q *cmdq, const char *target, struct session **sp) +{ + struct cmd_find_state *fs; + + fs = cmd_find_target(cmdq, target, CMD_FIND_WINDOW, 0); + cmd_find_log_state(__func__, target, fs); + if (fs == NULL) + return (NULL); + + if (sp != NULL) + *sp = fs->s; + return (fs->wl); +} + +/* Find the target pane and report an error and return NULL. */ +struct winlink * +cmd_find_pane(struct cmd_q *cmdq, const char *target, struct session **sp, + struct window_pane **wpp) +{ + struct cmd_find_state *fs; + + fs = cmd_find_target(cmdq, target, CMD_FIND_PANE, 0); + cmd_find_log_state(__func__, target, fs); + if (fs == NULL) + return (NULL); + + if (sp != NULL) + *sp = fs->s; + if (wpp != NULL) + *wpp = fs->wp; + return (fs->wl); +} + +/* Find the target client or report an error and return NULL. */ +struct client * +cmd_find_client(struct cmd_q *cmdq, const char *target, int quiet) +{ + struct client *c; + char *copy; + size_t size; + const char *path; + + /* A NULL argument means the current client. */ + if (target == NULL) { + c = cmd_find_current_client(cmdq); + if (c == NULL && !quiet) + cmdq_error(cmdq, "no current client"); + return (c); + } + copy = xstrdup(target); + + /* Trim a single trailing colon if any. */ + size = strlen(copy); + if (size != 0 && copy[size - 1] == ':') + copy[size - 1] = '\0'; + + /* Check path of each client. */ + TAILQ_FOREACH(c, &clients, entry) { + if (c->session == NULL || c->tty.path == NULL) + continue; + path = c->tty.path; + + /* Try for exact match. */ + if (strcmp(copy, path) == 0) + break; + + /* Try without leading /dev. */ + if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0) + continue; + if (strcmp(copy, path + (sizeof _PATH_DEV) - 1) == 0) + break; + } + + /* If no client found, report an error. */ + if (c == NULL && !quiet) + cmdq_error(cmdq, "can't find client %s", copy); + + free(copy); + return (c); +} + +/* + * Find the target session and window index, whether or not it exists in the + * session. Return -2 on error or -1 if no window index is specified. This is + * used when parsing an argument for a window target that may not exist (for + * example if it is going to be created). + */ +int +cmd_find_index(struct cmd_q *cmdq, const char *target, struct session **sp) +{ + struct cmd_find_state *fs; + int flags = CMD_FIND_WINDOW_INDEX; + + fs = cmd_find_target(cmdq, target, CMD_FIND_WINDOW, flags); + cmd_find_log_state(__func__, target, fs); + if (fs == NULL) + return (-2); + + if (sp != NULL) + *sp = fs->s; + return (fs->idx); +} |