mirror of
https://github.com/tmux/tmux.git
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487 lines
12 KiB
C
487 lines
12 KiB
C
/* $Id$ */
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/*
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* Copyright (c) 2011 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 <netdb.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include "tmux.h"
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/*
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* Build a list of key-value pairs and use them to expand #{key} entries in a
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* string.
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*/
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int format_replace(struct format_tree *, const char *, size_t, char **,
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size_t *, size_t *);
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void format_window_pane_tabs(struct format_tree *, struct window_pane *);
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/* Format key-value replacement entry. */
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RB_GENERATE(format_tree, format_entry, entry, format_cmp);
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/* Format tree comparison function. */
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int
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format_cmp(struct format_entry *fe1, struct format_entry *fe2)
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{
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return (strcmp(fe1->key, fe2->key));
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}
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/* Single-character aliases. */
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const char *format_aliases[26] = {
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NULL, /* A */
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NULL, /* B */
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NULL, /* C */
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"pane_id", /* D */
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NULL, /* E */
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"window_flags", /* F */
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NULL, /* G */
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"host", /* H */
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"window_index", /* I */
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NULL, /* J */
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NULL, /* K */
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NULL, /* L */
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NULL, /* M */
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NULL, /* N */
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NULL, /* O */
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"pane_index", /* P */
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NULL, /* Q */
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NULL, /* R */
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"session_name", /* S */
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"pane_title", /* T */
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NULL, /* U */
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NULL, /* V */
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"window_name", /* W */
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NULL, /* X */
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NULL, /* Y */
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NULL /* Z */
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};
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/* Create a new tree. */
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struct format_tree *
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format_create(void)
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{
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struct format_tree *ft;
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char host[MAXHOSTNAMELEN];
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ft = xmalloc(sizeof *ft);
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RB_INIT(ft);
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if (gethostname(host, sizeof host) == 0)
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format_add(ft, "host", "%s", host);
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return (ft);
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}
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/* Free a tree. */
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void
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format_free(struct format_tree *ft)
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{
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struct format_entry *fe, *fe_next;
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fe_next = RB_MIN(format_tree, ft);
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while (fe_next != NULL) {
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fe = fe_next;
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fe_next = RB_NEXT(format_tree, ft, fe);
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RB_REMOVE(format_tree, ft, fe);
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free(fe->value);
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free(fe->key);
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free(fe);
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}
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free (ft);
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}
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/* Add a key-value pair. */
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void
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format_add(struct format_tree *ft, const char *key, const char *fmt, ...)
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{
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struct format_entry *fe;
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va_list ap;
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fe = xmalloc(sizeof *fe);
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fe->key = xstrdup(key);
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va_start(ap, fmt);
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xvasprintf(&fe->value, fmt, ap);
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va_end(ap);
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RB_INSERT(format_tree, ft, fe);
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}
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/* Find a format entry. */
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const char *
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format_find(struct format_tree *ft, const char *key)
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{
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struct format_entry *fe, fe_find;
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fe_find.key = (char *) key;
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fe = RB_FIND(format_tree, ft, &fe_find);
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if (fe == NULL)
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return (NULL);
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return (fe->value);
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}
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/*
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* Replace a key/value pair in buffer. #{blah} is expanded directly,
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* #{?blah,a,b} is replace with a if blah exists and is nonzero else b.
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*/
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int
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format_replace(struct format_tree *ft,
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const char *key, size_t keylen, char **buf, size_t *len, size_t *off)
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{
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char *copy, *ptr;
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const char *value;
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size_t valuelen;
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/* Make a copy of the key. */
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copy = xmalloc(keylen + 1);
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memcpy(copy, key, keylen);
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copy[keylen] = '\0';
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/*
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* Is this a conditional? If so, check it exists and extract either the
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* first or second element. If not, look up the key directly.
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*/
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if (*copy == '?') {
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ptr = strchr(copy, ',');
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if (ptr == NULL)
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goto fail;
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*ptr = '\0';
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value = format_find(ft, copy + 1);
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if (value != NULL && (value[0] != '0' || value[1] != '\0')) {
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value = ptr + 1;
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ptr = strchr(value, ',');
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if (ptr == NULL)
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goto fail;
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*ptr = '\0';
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} else {
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ptr = strchr(ptr + 1, ',');
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if (ptr == NULL)
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goto fail;
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value = ptr + 1;
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}
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} else {
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value = format_find(ft, copy);
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if (value == NULL)
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value = "";
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}
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valuelen = strlen(value);
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/* Expand the buffer and copy in the value. */
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while (*len - *off < valuelen + 1) {
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*buf = xrealloc(*buf, 2, *len);
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*len *= 2;
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}
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memcpy(*buf + *off, value, valuelen);
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*off += valuelen;
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free(copy);
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return (0);
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fail:
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free(copy);
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return (-1);
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}
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/* Expand keys in a template. */
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char *
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format_expand(struct format_tree *ft, const char *fmt)
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{
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char *buf, *ptr;
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const char *s;
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size_t off, len, n;
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int ch;
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len = 64;
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buf = xmalloc(len);
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off = 0;
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while (*fmt != '\0') {
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if (*fmt != '#') {
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while (len - off < 2) {
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buf = xrealloc(buf, 2, len);
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len *= 2;
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}
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buf[off++] = *fmt++;
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continue;
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}
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fmt++;
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ch = (u_char) *fmt++;
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switch (ch) {
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case '{':
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ptr = strchr(fmt, '}');
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if (ptr == NULL)
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break;
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n = ptr - fmt;
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if (format_replace(ft, fmt, n, &buf, &len, &off) != 0)
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break;
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fmt += n + 1;
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continue;
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default:
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if (ch >= 'A' && ch <= 'Z') {
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s = format_aliases[ch - 'A'];
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if (s != NULL) {
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n = strlen(s);
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if (format_replace (
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ft, s, n, &buf, &len, &off) != 0)
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break;
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continue;
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}
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}
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while (len - off < 3) {
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buf = xrealloc(buf, 2, len);
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len *= 2;
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}
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buf[off++] = '#';
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buf[off++] = ch;
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continue;
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}
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break;
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}
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buf[off] = '\0';
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return (buf);
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}
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/* Set default format keys for a session. */
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void
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format_session(struct format_tree *ft, struct session *s)
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{
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struct session_group *sg;
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char *tim;
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time_t t;
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format_add(ft, "session_name", "%s", s->name);
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format_add(ft, "session_windows", "%u", winlink_count(&s->windows));
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format_add(ft, "session_width", "%u", s->sx);
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format_add(ft, "session_height", "%u", s->sy);
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format_add(ft, "session_id", "$%u", s->id);
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sg = session_group_find(s);
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format_add(ft, "session_grouped", "%d", sg != NULL);
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if (sg != NULL)
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format_add(ft, "session_group", "%u", session_group_index(sg));
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t = s->creation_time.tv_sec;
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format_add(ft, "session_created", "%ld", (long) t);
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tim = ctime(&t);
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*strchr(tim, '\n') = '\0';
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format_add(ft, "session_created_string", "%s", tim);
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if (s->flags & SESSION_UNATTACHED)
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format_add(ft, "session_attached", "%d", 0);
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else
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format_add(ft, "session_attached", "%d", 1);
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}
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/* Set default format keys for a client. */
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void
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format_client(struct format_tree *ft, struct client *c)
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{
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char *tim;
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time_t t;
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struct session *s;
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format_add(ft, "client_cwd", "%s", c->cwd);
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format_add(ft, "client_height", "%u", c->tty.sy);
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format_add(ft, "client_width", "%u", c->tty.sx);
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format_add(ft, "client_tty", "%s", c->tty.path);
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format_add(ft, "client_termname", "%s", c->tty.termname);
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t = c->creation_time.tv_sec;
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format_add(ft, "client_created", "%ld", (long) t);
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tim = ctime(&t);
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*strchr(tim, '\n') = '\0';
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format_add(ft, "client_created_string", "%s", tim);
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t = c->activity_time.tv_sec;
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format_add(ft, "client_activity", "%ld", (long) t);
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tim = ctime(&t);
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*strchr(tim, '\n') = '\0';
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format_add(ft, "client_activity_string", "%s", tim);
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format_add(ft, "client_prefix", "%d", !!(c->flags & CLIENT_PREFIX));
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if (c->tty.flags & TTY_UTF8)
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format_add(ft, "client_utf8", "%d", 1);
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else
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format_add(ft, "client_utf8", "%d", 0);
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if (c->flags & CLIENT_READONLY)
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format_add(ft, "client_readonly", "%d", 1);
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else
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format_add(ft, "client_readonly", "%d", 0);
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s = c->session;
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if (s != NULL)
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format_add(ft, "client_session", "%s", s->name);
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s = c->last_session;
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if (s != NULL && session_alive(s))
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format_add(ft, "client_last_session", "%s", s->name);
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}
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/* Set default format keys for a winlink. */
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void
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format_winlink(struct format_tree *ft, struct session *s, struct winlink *wl)
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{
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struct window *w = wl->window;
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char *layout, *flags;
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layout = layout_dump(w);
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flags = window_printable_flags(s, wl);
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format_add(ft, "window_id", "@%u", w->id);
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format_add(ft, "window_index", "%d", wl->idx);
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format_add(ft, "window_name", "%s", w->name);
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format_add(ft, "window_width", "%u", w->sx);
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format_add(ft, "window_height", "%u", w->sy);
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format_add(ft, "window_flags", "%s", flags);
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format_add(ft, "window_layout", "%s", layout);
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format_add(ft, "window_active", "%d", wl == s->curw);
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format_add(ft, "window_panes", "%u", window_count_panes(w));
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free(flags);
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free(layout);
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}
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/* Add window pane tabs. */
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void
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format_window_pane_tabs(struct format_tree *ft, struct window_pane *wp)
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{
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struct evbuffer *buffer;
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u_int i;
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buffer = evbuffer_new();
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for (i = 0; i < wp->base.grid->sx; i++) {
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if (!bit_test(wp->base.tabs, i))
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continue;
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if (EVBUFFER_LENGTH(buffer) > 0)
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evbuffer_add(buffer, ",", 1);
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evbuffer_add_printf(buffer, "%d", i);
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}
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format_add(ft, "pane_tabs", "%.*s", (int) EVBUFFER_LENGTH(buffer),
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EVBUFFER_DATA(buffer));
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evbuffer_free(buffer);
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}
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/* Set default format keys for a window pane. */
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void
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format_window_pane(struct format_tree *ft, struct window_pane *wp)
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{
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struct grid *gd = wp->base.grid;
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struct grid_line *gl;
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unsigned long long size;
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u_int i, idx;
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const char *cwd;
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char *cmd;
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size = 0;
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for (i = 0; i < gd->hsize; i++) {
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gl = &gd->linedata[i];
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size += gl->cellsize * sizeof *gl->celldata;
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}
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size += gd->hsize * sizeof *gd->linedata;
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format_add(ft, "history_size", "%u", gd->hsize);
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format_add(ft, "history_limit", "%u", gd->hlimit);
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format_add(ft, "history_bytes", "%llu", size);
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if (window_pane_index(wp, &idx) != 0)
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fatalx("index not found");
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format_add(ft, "pane_index", "%u", idx);
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format_add(ft, "pane_width", "%u", wp->sx);
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format_add(ft, "pane_height", "%u", wp->sy);
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format_add(ft, "pane_title", "%s", wp->base.title);
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format_add(ft, "pane_id", "%%%u", wp->id);
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format_add(ft, "pane_active", "%d", wp == wp->window->active);
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format_add(ft, "pane_dead", "%d", wp->fd == -1);
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format_add(ft, "pane_in_mode", "%d", wp->screen != &wp->base);
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if (wp->tty != NULL)
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format_add(ft, "pane_tty", "%s", wp->tty);
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format_add(ft, "pane_pid", "%ld", (long) wp->pid);
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if (wp->cmd != NULL)
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format_add(ft, "pane_start_command", "%s", wp->cmd);
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if (wp->cwd != NULL)
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format_add(ft, "pane_start_path", "%s", wp->cwd);
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if ((cwd = osdep_get_cwd(wp->fd)) != NULL)
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format_add(ft, "pane_current_path", "%s", cwd);
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if ((cmd = osdep_get_name(wp->fd, wp->tty)) != NULL) {
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format_add(ft, "pane_current_command", "%s", cmd);
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free(cmd);
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}
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format_add(ft, "cursor_x", "%d", wp->base.cx);
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format_add(ft, "cursor_y", "%d", wp->base.cy);
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format_add(ft, "scroll_region_upper", "%d", wp->base.rupper);
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format_add(ft, "scroll_region_lower", "%d", wp->base.rlower);
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format_add(ft, "saved_cursor_x", "%d", wp->ictx.old_cx);
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format_add(ft, "saved_cursor_y", "%d", wp->ictx.old_cy);
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format_add(ft, "alternate_on", "%d", wp->saved_grid ? 1 : 0);
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format_add(ft, "alternate_saved_x", "%d", wp->saved_cx);
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format_add(ft, "alternate_saved_y", "%d", wp->saved_cy);
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format_add(ft, "cursor_flag", "%d",
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!!(wp->base.mode & MODE_CURSOR));
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format_add(ft, "insert_flag", "%d",
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!!(wp->base.mode & MODE_INSERT));
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format_add(ft, "keypad_cursor_flag", "%d",
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!!(wp->base.mode & MODE_KCURSOR));
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format_add(ft, "keypad_flag", "%d",
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!!(wp->base.mode & MODE_KKEYPAD));
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format_add(ft, "wrap_flag", "%d",
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!!(wp->base.mode & MODE_WRAP));
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format_add(ft, "mouse_standard_flag", "%d",
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!!(wp->base.mode & MODE_MOUSE_STANDARD));
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format_add(ft, "mouse_button_flag", "%d",
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!!(wp->base.mode & MODE_MOUSE_BUTTON));
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format_add(ft, "mouse_any_flag", "%d",
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!!(wp->base.mode & MODE_MOUSE_ANY));
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format_add(ft, "mouse_utf8_flag", "%d",
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!!(wp->base.mode & MODE_MOUSE_UTF8));
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format_window_pane_tabs(ft, wp);
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}
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/* Set default format keys for paste buffer. */
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void
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format_paste_buffer(struct format_tree *ft, struct paste_buffer *pb)
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{
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char *pb_print = paste_print(pb, 50);
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format_add(ft, "buffer_size", "%zu", pb->size);
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format_add(ft, "buffer_sample", "%s", pb_print);
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free(pb_print);
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}
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