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