Import sources from 2011-03-30 iso image

1 files changed, 133 insertions, 0 deletions

diff --git a/sys/src/cmd/wikifs/util.c b/sys/src/cmd/wikifs/util.c
new file mode 100755
index 000000000..d108cfb83
--- /dev/null
+++ b/sys/src/cmd/wikifs/util.c
@@ -0,0 +1,133 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <String.h>
+#include <ctype.h>
+#include <thread.h>
+#include "wiki.h"
+
+void*
+erealloc(void *v, ulong n)
+{
+	v = realloc(v, n);
+	if(v == nil)
+		sysfatal("out of memory reallocating %lud", n);
+	setmalloctag(v, getcallerpc(&v));
+	return v;
+}
+
+void*
+emalloc(ulong n)
+{
+	void *v;
+
+	v = malloc(n);
+	if(v == nil)
+		sysfatal("out of memory allocating %lud", n);
+	memset(v, 0, n);
+	setmalloctag(v, getcallerpc(&n));
+	return v;
+}
+
+char*
+estrdup(char *s)
+{
+	int l;
+	char *t;
+
+	if (s == nil)
+		return nil;
+	l = strlen(s)+1;
+	t = emalloc(l);
+	memmove(t, s, l);
+	setmalloctag(t, getcallerpc(&s));
+	return t;
+}
+
+char*
+estrdupn(char *s, int n)
+{
+	int l;
+	char *t;
+
+	l = strlen(s);
+	if(l > n)
+		l = n;
+	t = emalloc(l+1);
+	memmove(t, s, l);
+	t[l] = '\0';
+	setmalloctag(t, getcallerpc(&s));
+	return t;
+}
+
+char*
+strlower(char *s)
+{
+	char *p;
+
+	for(p=s; *p; p++)
+		if('A' <= *p && *p <= 'Z')
+			*p += 'a'-'A';
+	return s;
+}
+
+String*
+s_appendsub(String *s, char *p, int n, Sub *sub, int nsub)
+{
+	int i, m;
+	char *q, *r, *ep;
+
+	ep = p+n;
+	while(p<ep){
+		q = ep;
+		m = -1;
+		for(i=0; i<nsub; i++){
+			if(sub[i].sub && (r = strstr(p, sub[i].match)) && r < q){
+				q = r;
+				m = i;
+			}
+		}
+		s = s_nappend(s, p, q-p);
+		p = q;
+		if(m >= 0){
+			s = s_append(s, sub[m].sub);
+			p += strlen(sub[m].match);
+		}
+	}
+	return s;
+}
+
+String*
+s_appendlist(String *s, ...)
+{
+	char *x;
+	va_list arg;
+
+	va_start(arg, s);
+	while(x = va_arg(arg, char*))
+		s = s_append(s, x);
+	va_end(arg);
+	return s;
+}
+
+int
+opentemp(char *template)
+{
+	int fd, i;
+	char *p;
+
+	p = estrdup(template);
+	fd = -1;
+	for(i=0; i<10; i++){
+		mktemp(p);
+		if(access(p, 0) < 0 && (fd=create(p, ORDWR|ORCLOSE, 0444)) >= 0)
+			break;
+		strcpy(p, template);
+	}
+	if(fd >= 0)
+		strcpy(template, p);
+	free(p);
+
+	return fd;
+}
+