cfg.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
   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 #include <sys/stat.h>
  21
  22 #include <ctype.h>
  23 #include <errno.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #include "tmux.h"
  29
  30 struct cmd_q            *cfg_cmd_q;
  31 int                      cfg_finished;
  32 int                      cfg_references;
  33 struct causelist         cfg_causes;
  34
  35 int
  36 load_cfg(const char *path, struct cmd_q *cmdq, char **cause)
  37 {
  38         FILE            *f;
  39         u_int            n, found;
  40         char            *buf, *copy, *line, *cause1, *msg;
  41         size_t           len, oldlen;
  42         struct cmd_list *cmdlist;
  43
  44         log_debug("loading %s", path);
  45         if ((f = fopen(path, "rb")) == NULL) {
  46                 xasprintf(cause, "%s: %s", path, strerror(errno));
  47                 return (-1);
  48         }
  49
  50         n = found = 0;
  51         line = NULL;
  52         while ((buf = fgetln(f, &len))) {
  53                 /* Trim \n. */
  54                 if (buf[len - 1] == '\n')
  55                         len--;
  56                 log_debug("%s: %.*s", path, (int)len, buf);
  57
  58                 /* Current line is the continuation of the previous one. */
  59                 if (line != NULL) {
  60                         oldlen = strlen(line);
  61                         line = xrealloc(line, 1, oldlen + len + 1);
  62                 } else {
  63                         oldlen = 0;
  64                         line = xmalloc(len + 1);
  65                 }
  66
  67                 /* Append current line to the previous. */
  68                 memcpy(line + oldlen, buf, len);
  69                 line[oldlen + len] = '\0';
  70                 n++;
  71
  72                 /* Continuation: get next line? */
  73                 len = strlen(line);
  74                 if (len > 0 && line[len - 1] == '\\') {
  75                         line[len - 1] = '\0';
  76
  77                         /* Ignore escaped backslash at EOL. */
  78                         if (len > 1 && line[len - 2] != '\\')
  79                                 continue;
  80                 }
  81                 copy = line;
  82                 line = NULL;
  83
  84                 /* Skip empty lines. */
  85                 buf = copy;
  86                 while (isspace((u_char)*buf))
  87                         buf++;
  88                 if (*buf == '\0') {
  89                         free(copy);
  90                         continue;
  91                 }
  92
  93                 /* Parse and run the command. */
  94                 if (cmd_string_parse(buf, &cmdlist, path, n, &cause1) != 0) {
  95                         free(copy);
  96                         if (cause1 == NULL)
  97                                 continue;
  98                         xasprintf(&msg, "%s:%u: %s", path, n, cause1);
  99                         ARRAY_ADD(&cfg_causes, msg);
 100                         free(cause1);
 101                         continue;
 102                 }
 103                 free(copy);
 104
 105                 if (cmdlist == NULL)
 106                         continue;
 107                 cmdq_append(cmdq, cmdlist);
 108                 cmd_list_free(cmdlist);
 109                 found++;
 110         }
 111         if (line != NULL)
 112                 free(line);
 113         fclose(f);
 114
 115         return (found);
 116 }
 117
 118 void
 119 cfg_default_done(unused struct cmd_q *cmdq)
 120 {
 121         if (--cfg_references != 0)
 122                 return;
 123         cfg_finished = 1;
 124
 125         if (!RB_EMPTY(&sessions))
 126                 cfg_show_causes(RB_MIN(sessions, &sessions));
 127
 128         cmdq_free(cfg_cmd_q);
 129         cfg_cmd_q = NULL;
 130 }
 131
 132 void
 133 cfg_show_causes(struct session *s)
 134 {
 135         struct window_pane      *wp;
 136         char                    *cause;
 137         u_int                    i;
 138
 139         if (s == NULL || ARRAY_EMPTY(&cfg_causes))
 140                 return;
 141         wp = s->curw->window->active;
 142
 143         window_pane_set_mode(wp, &window_copy_mode);
 144         window_copy_init_for_output(wp);
 145         for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
 146                 cause = ARRAY_ITEM(&cfg_causes, i);
 147                 window_copy_add(wp, "%s", cause);
 148                 free(cause);
 149         }
 150         ARRAY_FREE(&cfg_causes);
 151 }