agendafs

A filesystem for your calendar.
git clone git://mccd.space/agendafs
util.c (1026B)
      1 // Copyright © 2019-2024 Michael Forney
      2 // util.c from cproc
      3 #include "util.h"
      4 #include <assert.h>
      5 #include <errno.h>
      6 #include <stdarg.h>
      7 #include <stdbool.h>
      8 #include <stdint.h>
      9 #include <stdio.h>
     10 #include <stdlib.h>
     11 #include <string.h>
     12 
     13 void *
     14 xmalloc(size_t len)
     15 {
     16 	void *buf;
     17 
     18 	buf = malloc(len);
     19 	if (!buf && len) {
     20 		LOG("FAILED TO MALLOC FOR %zu", len);
     21 		exit(1);
     22 	}
     23 
     24 	return buf;
     25 }
     26 
     27 void *
     28 xcalloc(size_t memb, size_t s)
     29 {
     30 	void *buf;
     31 
     32 	buf = calloc(memb, s);
     33 	if (!buf)
     34 		exit(1);
     35 
     36 	return buf;
     37 }
     38 
     39 char *
     40 xstrdup(const char *s)
     41 {
     42 	char *cpy = strdup(s);
     43 	if (!cpy)
     44 		exit(1);
     45 	return cpy;
     46 }
     47 
     48 void *
     49 reallocarray(void *buf, size_t n, size_t m)
     50 {
     51 	if (n > 0 && SIZE_MAX / n < m) {
     52 		errno = ENOMEM;
     53 		return NULL;
     54 	}
     55 	return realloc(buf, n * m);
     56 }
     57 
     58 void *
     59 xreallocarray(void *buf, size_t n, size_t m)
     60 {
     61 	buf = reallocarray(buf, n, m);
     62 	if (!buf && n && m)
     63 		exit(1);
     64 
     65 	return buf;
     66 }
     67 
     68 bool
     69 starts_with_str(const char *str, const char *prefix)
     70 {
     71 	size_t len = strlen(prefix);
     72 	return strncmp(str, prefix, len) == 0;
     73 }
     74