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-rw-r--r--nsprpub/pr/src/io/prstdio.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/nsprpub/pr/src/io/prstdio.c b/nsprpub/pr/src/io/prstdio.c
new file mode 100644
index 000000000..74b85d9cf
--- /dev/null
+++ b/nsprpub/pr/src/io/prstdio.c
@@ -0,0 +1,74 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "primpl.h"
+
+#include <string.h>
+
+/*
+** fprintf to a PRFileDesc
+*/
+PR_IMPLEMENT(PRUint32) PR_fprintf(PRFileDesc* fd, const char *fmt, ...)
+{
+ va_list ap;
+ PRUint32 rv;
+
+ va_start(ap, fmt);
+ rv = PR_vfprintf(fd, fmt, ap);
+ va_end(ap);
+ return rv;
+}
+
+PR_IMPLEMENT(PRUint32) PR_vfprintf(PRFileDesc* fd, const char *fmt, va_list ap)
+{
+ /* XXX this could be better */
+ PRUint32 rv, len;
+ char* msg = PR_vsmprintf(fmt, ap);
+ if (NULL == msg) {
+ return -1;
+ }
+ len = strlen(msg);
+#ifdef XP_OS2
+ /*
+ * OS/2 really needs a \r for every \n.
+ * In the future we should try to use scatter-gather instead of a
+ * succession of PR_Write.
+ */
+ if (isatty(PR_FileDesc2NativeHandle(fd))) {
+ PRUint32 last = 0, idx;
+ PRInt32 tmp;
+ rv = 0;
+ for (idx = 0; idx < len+1; idx++) {
+ if ((idx - last > 0) && (('\n' == msg[idx]) || (idx == len))) {
+ tmp = PR_Write(fd, msg + last, idx - last);
+ if (tmp >= 0) {
+ rv += tmp;
+ }
+ last = idx;
+ }
+ /*
+ * if current character is \n, and
+ * previous character isn't \r, and
+ * next character isn't \r
+ */
+ if (('\n' == msg[idx]) &&
+ ((0 == idx) || ('\r' != msg[idx-1])) &&
+ ('\r' != msg[idx+1])) {
+ /* add extra \r */
+ tmp = PR_Write(fd, "\r", 1);
+ if (tmp >= 0) {
+ rv += tmp;
+ }
+ }
+ }
+ } else {
+ rv = PR_Write(fd, msg, len);
+ }
+#else
+ rv = PR_Write(fd, msg, len);
+#endif
+ PR_DELETE(msg);
+ return rv;
+}