fill /acme

[plan9front.git] / acme / bin / source / acd / util.c

diff --git a/acme/bin/source/acd/util.c b/acme/bin/source/acd/util.c
new file mode 100644 (file)
index 0000000..2b300fc
--- /dev/null
+++ b/acme/bin/source/acd/util.c
@@ -0,0 +1,89 @@
+#include "acd.h"
+
+void*
+emalloc(uint n)
+{
+       void *p;
+
+       p = malloc(n);
+       if(p == nil)
+               error("can't malloc: %r");
+       memset(p, 0, n);
+       return p;
+}
+
+char*
+estrdup(char *s)
+{
+       char *t;
+
+       t = emalloc(strlen(s)+1);
+       strcpy(t, s);
+       return t;
+}
+
+char*
+estrstrdup(char *s, char *t)
+{
+       char *u;
+
+       u = emalloc(strlen(s)+strlen(t)+1);
+       strcpy(u, s);
+       strcat(u, t);
+       return u;
+}
+
+char*
+eappend(char *s, char *sep, char *t)
+{
+       char *u;
+
+       if(t == nil)
+               u = estrstrdup(s, sep);
+       else{
+               u = emalloc(strlen(s)+strlen(sep)+strlen(t)+1);
+               strcpy(u, s);
+               strcat(u, sep);
+               strcat(u, t);
+       }
+       free(s);
+       return u;
+}
+
+char*
+egrow(char *s, char *sep, char *t)
+{
+       s = eappend(s, sep, t);
+       free(t);
+       return s;
+}
+
+void
+error(char *fmt, ...)
+{
+       int n;
+       va_list arg;
+       char buf[256];
+
+       fprint(2, "Mail: ");
+       va_start(arg, fmt);
+       n = vsnprint(buf, sizeof buf, fmt, arg);
+       va_end(arg);
+       write(2, buf, n);
+       write(2, "\n", 1);
+       threadexitsall(fmt);
+}
+
+void
+ctlprint(int fd, char *fmt, ...)
+{
+       int n;
+       va_list arg;
+       char buf[256];
+
+       va_start(arg, fmt);
+       n = vsnprint(buf, sizeof buf, fmt, arg);
+       va_end(arg);
+       if(write(fd, buf, n) != n)
+               error("control file write error: %r");
+}