1 #include "awiki.h"
2
3 void*
emalloc(uint n)4 emalloc(uint n)
5 {
6 void *p;
7
8 p = malloc(n);
9 if(p == nil)
10 error("can't malloc: %r");
11 memset(p, 0, n);
12 return p;
13 }
14
15 char*
estrdup(char * s)16 estrdup(char *s)
17 {
18 char *t;
19
20 t = emalloc(strlen(s)+1);
21 strcpy(t, s);
22 return t;
23 }
24
25 char*
estrstrdup(char * s,char * t)26 estrstrdup(char *s, char *t)
27 {
28 char *u;
29
30 u = emalloc(strlen(s)+strlen(t)+1);
31 strcpy(u, s);
32 strcat(u, t);
33 return u;
34 }
35
36 char*
eappend(char * s,char * sep,char * t)37 eappend(char *s, char *sep, char *t)
38 {
39 char *u;
40
41 if(t == nil)
42 u = estrstrdup(s, sep);
43 else{
44 u = emalloc(strlen(s)+strlen(sep)+strlen(t)+1);
45 strcpy(u, s);
46 strcat(u, sep);
47 strcat(u, t);
48 }
49 free(s);
50 return u;
51 }
52
53 char*
egrow(char * s,char * sep,char * t)54 egrow(char *s, char *sep, char *t)
55 {
56 s = eappend(s, sep, t);
57 free(t);
58 return s;
59 }
60
61 void
error(char * fmt,...)62 error(char *fmt, ...)
63 {
64 int n;
65 va_list arg;
66 char buf[256];
67
68 fprint(2, "Wiki: ");
69 va_start(arg, fmt);
70 n = vseprint(buf, buf+sizeof buf, fmt, arg) - buf;
71 va_end(arg);
72 write(2, buf, n);
73 write(2, "\n", 1);
74 threadexitsall(fmt);
75 }
76
77 void
ctlprint(int fd,char * fmt,...)78 ctlprint(int fd, char *fmt, ...)
79 {
80 int n;
81 va_list arg;
82 char buf[256];
83
84 va_start(arg, fmt);
85 n = vseprint(buf, buf+sizeof buf, fmt, arg) - buf;
86 va_end(arg);
87 if(write(fd, buf, n) != n)
88 error("control file write(%s) error: %r", buf);
89 }
90