fill /acme

1 files changed, 89 insertions, 0 deletions

diff --git a/acme/wiki/src/util.c b/acme/wiki/src/util.c
new file mode 100644
index 000000000..832d97321
--- /dev/null
+++ b/acme/wiki/src/util.c
@@ -0,0 +1,89 @@
+#include "awiki.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, "Wiki: ");
+	va_start(arg, fmt);
+	n = vseprint(buf, buf+sizeof buf, fmt, arg) - buf;
+	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 = vseprint(buf, buf+sizeof buf, fmt, arg) - buf;
+	va_end(arg);
+	if(write(fd, buf, n) != n)
+		error("control file write(%s) error: %r", buf);
+}