From 78488dc84afac1398e582ae6bbaf9606d07afa1e Mon Sep 17 00:00:00 2001
From: John Denker <jsd@av8n.com>
Date: Sat, 2 Jun 2012 18:38:28 -0700
Subject: checkpassword ... as downloaded

---
 checkpasswd/buffer_put.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 checkpasswd/buffer_put.c

(limited to 'checkpasswd/buffer_put.c')

diff --git a/checkpasswd/buffer_put.c b/checkpasswd/buffer_put.c
new file mode 100644
index 0000000..a05e1f5
--- /dev/null
+++ b/checkpasswd/buffer_put.c
@@ -0,0 +1,88 @@
+#include "buffer.h"
+#include "str.h"
+#include "byte.h"
+#include "error.h"
+
+static int allwrite(int (*op)(),int fd,char *buf,unsigned int len)
+{
+  int w;
+
+  while (len) {
+    w = op(fd,buf,len);
+    if (w == -1) {
+      if (errno == error_intr) continue;
+      return -1; /* note that some data may have been written */
+    }
+    if (w == 0) ; /* luser's fault */
+    buf += w;
+    len -= w;
+  }
+  return 0;
+}
+
+int buffer_flush(buffer *s)
+{
+  int p;
+ 
+  p = s->p;
+  if (!p) return 0;
+  s->p = 0;
+  return allwrite(s->op,s->fd,s->x,p);
+}
+
+int buffer_putalign(buffer *s,char *buf,unsigned int len)
+{
+  unsigned int n;
+ 
+  while (len > (n = s->n - s->p)) {
+    byte_copy(s->x + s->p,n,buf); s->p += n; buf += n; len -= n;
+    if (buffer_flush(s) == -1) return -1;
+  }
+  /* now len <= s->n - s->p */
+  byte_copy(s->x + s->p,len,buf);
+  s->p += len;
+  return 0;
+}
+
+int buffer_put(buffer *s,char *buf,unsigned int len)
+{
+  unsigned int n;
+ 
+  n = s->n;
+  if (len > n - s->p) {
+    if (buffer_flush(s) == -1) return -1;
+    /* now s->p == 0 */
+    if (n < BUFFER_OUTSIZE) n = BUFFER_OUTSIZE;
+    while (len > s->n) {
+      if (n > len) n = len;
+      if (allwrite(s->op,s->fd,buf,n) == -1) return -1;
+      buf += n;
+      len -= n;
+    }
+  }
+  /* now len <= s->n - s->p */
+  byte_copy(s->x + s->p,len,buf);
+  s->p += len;
+  return 0;
+}
+
+int buffer_putflush(buffer *s,char *buf,unsigned int len)
+{
+  if (buffer_flush(s) == -1) return -1;
+  return allwrite(s->op,s->fd,buf,len);
+}
+
+int buffer_putsalign(buffer *s,char *buf)
+{
+  return buffer_putalign(s,buf,str_len(buf));
+}
+
+int buffer_puts(buffer *s,char *buf)
+{
+  return buffer_put(s,buf,str_len(buf));
+}
+
+int buffer_putsflush(buffer *s,char *buf)
+{
+  return buffer_putflush(s,buf,str_len(buf));
+}
-- 
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