Initial commit of upstream NSPR (4.7.3) and NSS3 (3.12).

third_party/nspr/mozilla/nsprpub/lib/prstreams/prstrms.cpp

Index: third_party/nspr/mozilla/nsprpub/lib/prstreams/prstrms.cpp
diff --git a/third_party/nspr/mozilla/nsprpub/lib/prstreams/prstrms.cpp b/third_party/nspr/mozilla/nsprpub/lib/prstreams/prstrms.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..17b280ea1f1d06b648b162103686bda415da277c
--- /dev/null
+++ b/third_party/nspr/mozilla/nsprpub/lib/prstreams/prstrms.cpp
@@ -0,0 +1,550 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Netscape Portable Runtime (NSPR).
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/*
+ * Robin J. Maxwell 11-22-96
+ */
+
+#include "prstrms.h"
+#include <string.h> // memmove
+
+//
+// Definition of macros _PRSTR_BP, _PRSTR_DELBUF, and _PRSTR_DELBUF_C.
+//
+// _PRSTR_BP is the protected member of class ios that is returned
+// by the public method rdbuf().
+//
+// _PRSTR_DELBUF is the method or data member of class ios, if available,
+// with which we can ensure that the ios destructor does not delete
+// the associated streambuf.  If such a method or data member does not
+// exist, define _PRSTR_DELBUF to be empty.
+//
+// _PRSTR_DELBUF_C is just _PRSTR_DELBUF qualified by a base class.
+//
+
+#if defined(__GNUC__)
+#define _PRSTR_BP _strbuf
+#define _PRSTR_DELBUF(x)    /* as nothing */
+#define _PRSTR_DELBUF_C(c, x)  /* as nothing */
+#elif defined(WIN32)
+#define _PRSTR_BP bp
+#define _PRSTR_DELBUF(x)	delbuf(x)
+#define _PRSTR_DELBUF_C(c, x)	c::_PRSTR_DELBUF(x)
+#elif defined(VMS)
+#undef  _PRSTR_BP
+#define _PRSTR_DELBUF(x) /* as nothing */
+#define _PRSTR_DELBUF_C(c, x)	/* as nothing */
+#elif defined(OSF1)
+#define _PRSTR_BP m_psb
+#define _PRSTR_DELBUF(x) /* as nothing */
+#define _PRSTR_DELBUF_C(c, x)	/* as nothing */
+#elif defined(QNX)
+#define PRFSTREAMS_BROKEN
+#else
+#define _PRSTR_BP bp
+// Unix compilers don't believe in encapsulation
+// At least on Solaris this is also ignored
+#define _PRSTR_DELBUF(x)	delbuf = x
+#define _PRSTR_DELBUF_C(c, x)	c::_PRSTR_DELBUF(x)
+#endif
+
+const PRIntn STRM_BUFSIZ = 8192;
+
+#if !defined (PRFSTREAMS_BROKEN)   
+
+PRfilebuf::PRfilebuf():
+_fd(0),
+_opened(PR_FALSE),
+_allocated(PR_FALSE)
+{
+}
+
+PRfilebuf::PRfilebuf(PRFileDesc *fd):
+streambuf(),
+_fd(fd),
+_opened(PR_FALSE),
+_allocated(PR_FALSE)
+{
+}
+
+PRfilebuf::PRfilebuf(PRFileDesc *fd, char * buffptr, int bufflen):
+_fd(fd),
+_opened(PR_FALSE),
+_allocated(PR_FALSE)
+{
+    PRfilebuf::setbuf(buffptr, bufflen);
+}
+
+PRfilebuf::~PRfilebuf()
+{
+    if (_opened){
+        close();
+    }else
+        sync();
+	if (_allocated)
+		delete base();
+}
+
+PRfilebuf*	
+PRfilebuf::open(const char *name, int mode, int flags)
+{
+     if (_fd != 0)
+        return 0;    // error if already open
+     PRIntn PRmode = 0;
+    // translate mode argument
+    if (!(mode & ios::nocreate))
+        PRmode |= PR_CREATE_FILE;
+    //if (mode & ios::noreplace)
+    //    PRmode |= O_EXCL;
+    if (mode & ios::app){
+        mode |= ios::out;
+        PRmode |= PR_APPEND;
+    }
+    if (mode & ios::trunc){
+        mode |= ios::out;  // IMPLIED
+        PRmode |= PR_TRUNCATE;
+    }
+    if (mode & ios::out){
+        if (mode & ios::in)
+            PRmode |= PR_RDWR;
+        else
+            PRmode |= PR_WRONLY;
+        if (!(mode & (ios::in|ios::app|ios::ate|ios::noreplace))){
+            mode |= ios::trunc; // IMPLIED
+            PRmode |= PR_TRUNCATE;
+        }
+    }else if (mode & ios::in)
+        PRmode |= PR_RDONLY;
+    else
+        return 0;    // error if not ios:in or ios::out
+
+
+    //
+    // The usual portable across unix crap...
+    // NT gets a hokey piece of junk layer that prevents
+    // access to the API.
+#ifdef WIN32
+    _fd = PR_Open(name, PRmode, PRmode);
+#else
+    _fd = PR_Open(name, PRmode, flags);
+#endif
+    if (_fd == 0)
+        return 0;
+    _opened = PR_TRUE;
+    if ((!unbuffered()) && (!ebuf())){
+        char * sbuf = new char[STRM_BUFSIZ];
+        if (!sbuf)
+            unbuffered(1);
+        else{
+			_allocated = PR_TRUE;
+            streambuf::setb(sbuf,sbuf+STRM_BUFSIZ,0);
+		}
+    }
+    if (mode & ios::ate){
+        if (seekoff(0,ios::end,mode)==EOF){
+            close();
+            return 0;
+        }
+    }
+    return this;
+}
+
+PRfilebuf*	
+PRfilebuf::attach(PRFileDesc *fd)
+{
+    _opened = PR_FALSE;
+    _fd = fd;
+    return this;
+}
+
+int	
+PRfilebuf::overflow(int c)
+{
+    if (allocate()==EOF)        // make sure there is a reserve area
+        return EOF;
+    if (PRfilebuf::sync()==EOF) // sync before new buffer created below
+        return EOF;
+
+    if (!unbuffered())
+        setp(base(),ebuf());
+
+    if (c!=EOF){
+        if ((!unbuffered()) && (pptr() < epptr())) // guard against recursion
+            sputc(c);
+        else{
+            if (PR_Write(_fd, &c, 1)!=1)
+                return(EOF);
+        }
+    }
+    return(1);  // return something other than EOF if successful
+}
+
+int	
+PRfilebuf::underflow()
+{
+    int count;
+    unsigned char tbuf;
+
+    if (in_avail())
+        return (int)(unsigned char) *gptr();
+
+    if (allocate()==EOF)        // make sure there is a reserve area
+        return EOF;
+    if (PRfilebuf::sync()==EOF)
+        return EOF;
+
+    if (unbuffered())
+        {
+        if (PR_Read(_fd,(void *)&tbuf,1)<=0)
+            return EOF;
+        return (int)tbuf;
+        }
+
+    if ((count=PR_Read(_fd,(void *)base(),blen())) <= 0)
+        return EOF;     // reached EOF
+    setg(base(),base(),base()+count);
+    return (int)(unsigned char) *gptr();
+}
+
+streambuf*	
+PRfilebuf::setbuf(char *buffptr, PRstreambuflen bufflen)
+{
+    if (is_open() && (ebuf()))
+        return 0;
+    if ((!buffptr) || (bufflen <= 0))
+        unbuffered(1);
+    else
+        setb(buffptr, buffptr+bufflen, 0);
+    return this;
+}
+
+streampos	
+PRfilebuf::seekoff(streamoff offset, ios::seek_dir dir, int /* mode */)
+{
+    if (PR_GetDescType(_fd) == PR_DESC_FILE){
+        PRSeekWhence fdir;
+        PRInt32 retpos;
+        switch (dir) {
+            case ios::beg :
+                fdir = PR_SEEK_SET;
+                break;
+            case ios::cur :
+                fdir = PR_SEEK_CUR;
+                break;
+            case ios::end :
+                fdir = PR_SEEK_END;
+                break;
+            default:
+            // error
+                return(EOF);
+            }
+
+        if (PRfilebuf::sync()==EOF)
+            return EOF;
+        if ((retpos=PR_Seek(_fd, offset, fdir))==-1L)
+            return (EOF);
+        return((streampos)retpos);
+    }else
+        return (EOF);
+}
+
+
+int 
+PRfilebuf::sync()
+{
+    PRInt32 count; 
+
+    if (_fd==0)
+        return(EOF);
+
+    if (!unbuffered()){
+        // Sync write area
+        if ((count=out_waiting())!=0){
+            PRInt32 nout;
+            if ((nout =PR_Write(_fd,
+                               (void *) pbase(),
+                               (unsigned int)count)) != count){
+                if (nout > 0) {
+                    // should set _pptr -= nout
+                    pbump(-(int)nout);
+                    memmove(pbase(), pbase()+nout, (int)(count-nout));
+                }
+                return(EOF);
+            }
+        }
+        setp(0,0); // empty put area
+
+        if (PR_GetDescType(_fd) == PR_DESC_FILE){
+            // Sockets can't seek; don't need this
+            if ((count=in_avail()) > 0){
+                if (PR_Seek(_fd, -count, PR_SEEK_CUR)!=-1L)
+                {
+                    return (EOF);
+                }
+            }
+        }
+        setg(0,0,0); // empty get area
+    }
+    return(0);
+}
+
+PRfilebuf * 
+PRfilebuf::close()
+{
+    int retval;
+    if (_fd==0)
+        return 0;
+
+    retval = sync();
+
+    if ((PR_Close(_fd)==0) || (retval==EOF))
+        return 0;
+    _fd = 0;
+    return this;
+}
+
+PRifstream::PRifstream():
+istream(new PRfilebuf)
+{
+    _PRSTR_DELBUF(0);
+}
+
+PRifstream::PRifstream(PRFileDesc *fd):
+istream(new PRfilebuf(fd))
+{
+    _PRSTR_DELBUF(0);
+}
+
+PRifstream::PRifstream(PRFileDesc *fd, char *buff, int bufflen):
+istream(new PRfilebuf(fd, buff, bufflen))
+{
+    _PRSTR_DELBUF(0);
+}
+
+PRifstream::PRifstream(const char * name, int mode, int flags):
+istream(new PRfilebuf)
+{
+    _PRSTR_DELBUF(0);
+    if (!rdbuf()->open(name, (mode|ios::in), flags))
+        clear(rdstate() | ios::failbit);
+}
+
+PRifstream::~PRifstream()
+{
+	sync();
+
+	delete rdbuf();
+#ifdef _PRSTR_BP
+	_PRSTR_BP = 0;
+#endif
+}
+
+streambuf * 
+PRifstream::setbuf(char * ptr, int len)
+{
+    if ((is_open()) || (!(rdbuf()->setbuf(ptr, len)))){
+        clear(rdstate() | ios::failbit);
+        return 0;
+    }
+    return rdbuf();
+}
+
+void 
+PRifstream::attach(PRFileDesc *fd)
+{
+    if (!(rdbuf()->attach(fd)))
+        clear(rdstate() | ios::failbit);
+}
+
+void 
+PRifstream::open(const char * name, int mode, int flags)
+{
+    if (is_open() || !(rdbuf()->open(name, (mode|ios::in), flags)))
+        clear(rdstate() | ios::failbit);
+}
+
+void 
+PRifstream::close()
+{
+    clear((rdbuf()->close()) ? 0 : (rdstate() | ios::failbit));
+}
+
+PRofstream::PRofstream():
+ostream(new PRfilebuf)
+{
+    _PRSTR_DELBUF(0);
+}
+
+PRofstream::PRofstream(PRFileDesc *fd):
+ostream(new PRfilebuf(fd))
+{
+    _PRSTR_DELBUF(0);
+}
+
+PRofstream::PRofstream(PRFileDesc *fd, char *buff, int bufflen):
+ostream(new PRfilebuf(fd, buff, bufflen))
+{
+    _PRSTR_DELBUF(0);
+}
+
+PRofstream::PRofstream(const char *name, int mode, int flags):
+ostream(new PRfilebuf)
+{
+    _PRSTR_DELBUF(0);
+    if (!rdbuf()->open(name, (mode|ios::out), flags))
+        clear(rdstate() | ios::failbit);
+}
+
+PRofstream::~PRofstream()
+{
+	flush();
+
+	delete rdbuf();
+#ifdef _PRSTR_BP
+	_PRSTR_BP = 0;
+#endif
+}
+
+streambuf * 
+PRofstream::setbuf(char * ptr, int len)
+{
+    if ((is_open()) || (!(rdbuf()->setbuf(ptr, len)))){
+        clear(rdstate() | ios::failbit);
+        return 0;
+    }
+    return rdbuf();
+}
+
+void 
+PRofstream::attach(PRFileDesc *fd)
+{
+    if (!(rdbuf()->attach(fd)))
+        clear(rdstate() | ios::failbit);
+}
+
+void 
+PRofstream::open(const char * name, int mode, int flags)
+{
+    if (is_open() || !(rdbuf()->open(name, (mode|ios::out), flags)))
+        clear(rdstate() | ios::failbit);
+}
+
+void 
+PRofstream::close()
+{
+    clear((rdbuf()->close()) ? 0 : (rdstate() | ios::failbit));
+}
+
+PRfstream::PRfstream():
+iostream(new PRfilebuf)
+{
+	_PRSTR_DELBUF_C(istream, 0);
+	_PRSTR_DELBUF_C(ostream, 0);
+}
+
+PRfstream::PRfstream(PRFileDesc *fd):
+iostream(new PRfilebuf(fd))
+{
+	_PRSTR_DELBUF_C(istream, 0);
+	_PRSTR_DELBUF_C(ostream, 0);
+}
+
+PRfstream::PRfstream(PRFileDesc *fd, char *buff, int bufflen):
+iostream(new PRfilebuf(fd, buff, bufflen))
+{
+	_PRSTR_DELBUF_C(istream, 0);
+	_PRSTR_DELBUF_C(ostream, 0);
+}
+
+PRfstream::PRfstream(const char *name, int mode, int flags):
+iostream(new PRfilebuf)
+{
+	_PRSTR_DELBUF_C(istream, 0);
+	_PRSTR_DELBUF_C(ostream, 0);
+    if (!rdbuf()->open(name, (mode|(ios::in|ios::out)), flags))
+        clear(rdstate() | ios::failbit);
+}
+
+PRfstream::~PRfstream()
+{
+	sync();
+	flush();
+
+	delete rdbuf();
+#ifdef _PRSTR_BP
+	istream::_PRSTR_BP = 0;
+	ostream::_PRSTR_BP = 0;
+#endif
+}
+
+streambuf * 
+PRfstream::setbuf(char * ptr, int len)
+{
+    if ((is_open()) || (!(rdbuf()->setbuf(ptr, len)))){
+        clear(rdstate() | ios::failbit);
+        return 0;
+    }
+    return rdbuf();
+}
+
+void 
+PRfstream::attach(PRFileDesc *fd)
+{
+    if (!(rdbuf()->attach(fd)))
+        clear(rdstate() | ios::failbit);
+}
+
+void 
+PRfstream::open(const char * name, int mode, int flags)
+{
+    if (is_open() || !(rdbuf()->open(name, (mode|(ios::in|ios::out)), flags)))
+        clear(rdstate() | ios::failbit);
+}
+
+void 
+PRfstream::close()
+{
+    clear((rdbuf()->close()) ? 0 : (rdstate() | ios::failbit));
+}
+
+#else
+
+// fix it sometime
+
+int fix_prfstreams ()	{	return 0; }
+
+#endif