util.c - lchat - A line oriented chat front end for ii.
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       ---
       util.c (1700B)
       ---
            1 /*
            2  * Copyright (c) 2018-2023 Jan Klemkow <j.klemkow@wemelug.de>
            3  *
            4  * Permission to use, copy, modify, and distribute this software for any
            5  * purpose with or without fee is hereby granted, provided that the above
            6  * copyright notice and this permission notice appear in all copies.
            7  *
            8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
            9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
           10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
           11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
           12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
           13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
           14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
           15  */
           16 
           17 #include <stdarg.h>
           18 #include <stdbool.h>
           19 #include <stdio.h>
           20 #include <stdlib.h>
           21 #include <string.h>
           22 #include <unistd.h>
           23 
           24 void
           25 die(const char *fmt, ...)
           26 {
           27         va_list ap;
           28 
           29         va_start(ap, fmt);
           30         vfprintf(stderr, fmt, ap);
           31         va_end(ap);
           32 
           33         if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
           34                 fputc(' ', stderr);
           35                 perror(NULL);
           36         } else {
           37                 fputc('\n', stderr);
           38         }
           39 
           40         exit(EXIT_FAILURE);
           41 }
           42 
           43 bool
           44 bell_match(const char *str, const char *regex_file)
           45 {
           46         FILE *fh = NULL;
           47         char cmd[BUFSIZ];
           48 
           49         if (access(regex_file, R_OK) == -1)
           50                 return true;
           51 
           52         snprintf(cmd, sizeof cmd, "exec grep -qf %s", regex_file);
           53 
           54         if ((fh = popen(cmd, "w")) == NULL)
           55                 die("popen:");
           56 
           57         if (fputs(str, fh) == EOF)
           58                 die("fputs:");
           59 
           60         if (pclose(fh) == 0)
           61                 return true;
           62 
           63         return false;
           64 }
           65 
           66 void
           67 set_title(const char *term, char *title)
           68 {
           69         if (strncmp(term, "screen", 6) == 0)
           70                 printf("\033k%s\033\\", title);
           71         else
           72                 printf("\033]0;%s\a", title);
           73 }