1 files changed, 122 insertions, 0 deletions
diff --git a/sqwebmail/buf.c b/sqwebmail/buf.c
new file mode 100644
index 0000000..375c1f4
--- /dev/null
+++ b/sqwebmail/buf.c
@@ -0,0 +1,122 @@
+#include "config.h"
+/*
+** Copyright 1998 - 1999 Double Precision, Inc.  See COPYING for
+** distribution information.
+*/
+
+
+/*
+*/
+#include	<string.h>
+#include	"buf.h"
+#include	"sqwebmail.h"
+
+void buf_append(struct buf *b, char c)
+{
+	char cc[2];
+
+	cc[0]=c;
+	cc[1]=0;
+	buf_cat(b, cc);
+}
+
+static int buf_allocbuf(struct buf *b, size_t n)
+{
+	if (n > b->size)
+	{
+	size_t	c=n+64;
+	char	*p= b->ptr ? realloc(b->ptr, c):malloc(c);
+
+		if (!p)
+			return 0;
+
+		b->ptr=p;
+		b->size=c;
+	}
+	return 1;
+}
+
+void	buf_cpy(struct buf *b, const char *c)
+{
+	size_t	l=strlen(c);
+
+	if (!buf_allocbuf(b, l+1))
+		return;
+
+	strcpy(b->ptr, c);
+	b->cnt=l;
+}
+
+void	buf_cpyn(struct buf *b, const char *c, size_t n)
+{
+size_t	l;
+
+	for (l=0; l<n; l++)
+		if (c[l] == '\0')	break;
+
+	if (!buf_allocbuf(b, l+1))
+		return;
+
+	memcpy(b->ptr, c, l);
+	b->ptr[b->cnt=l]=0;
+}
+
+void	buf_cat(struct buf *b, const char *c)
+{
+	size_t	l=strlen(c);
+
+	if (!buf_allocbuf(b, b->cnt+l+1))
+		return;
+
+	strcpy(b->ptr+b->cnt, c);
+	b->cnt += l;
+}
+
+void	buf_catn(struct buf *b, const char *c, size_t n)
+{
+size_t	l;
+
+	for (l=0; l<n; l++)
+		if (c[l] == '\0')	break;
+
+	if (!buf_allocbuf(b, b->cnt+l+1))
+		return;
+
+	memcpy(b->ptr+b->cnt, c, l);
+	b->ptr[b->cnt += l]=0;
+}
+
+void	buf_memcpy(struct buf *b, const char *c, size_t n)
+{
+	if (!buf_allocbuf(b, n+1))
+		return;
+
+	memcpy(b->ptr, c, n);
+	b->ptr[b->cnt=n]=0;
+}
+
+void	buf_memcat(struct buf *b, const char *c, size_t n)
+{
+	if (!buf_allocbuf(b, b->cnt+n+1))
+		return;
+
+	memcpy(b->ptr+b->cnt, c, n);
+	b->ptr[b->cnt += n]=0;
+}
+
+void	buf_trimleft(struct buf *b, size_t n)
+{
+	if (n >= b->cnt)
+		b->cnt=0;
+	else
+	{
+	size_t	i;
+
+		for (b->cnt -= n, i=0; i<b->cnt; i++)
+			b->ptr[i]=b->ptr[i+n];
+	}
+	if (!buf_allocbuf(b, b->cnt+1))
+		return;
+
+	b->ptr[b->cnt]=0;
+}