LCOV - code coverage report
Current view: directory - nsprpub/pr/src/io - prstdio.c (source / functions) Found Hit Coverage
Test: app.info Lines: 13 12 92.3 %
Date: 2012-06-02 Functions: 2 2 100.0 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is the Netscape Portable Runtime (NSPR).
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998-2000
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include "primpl.h"
      39                 : 
      40                 : #include <string.h>
      41                 : 
      42                 : /*
      43                 : ** fprintf to a PRFileDesc
      44                 : */
      45            1319 : PR_IMPLEMENT(PRUint32) PR_fprintf(PRFileDesc* fd, const char *fmt, ...)
      46                 : {
      47                 :     va_list ap;
      48                 :     PRUint32 rv;
      49                 : 
      50            1319 :     va_start(ap, fmt);
      51            1319 :     rv = PR_vfprintf(fd, fmt, ap);
      52            1319 :     va_end(ap);
      53            1319 :     return rv;
      54                 : }
      55                 : 
      56            1319 : PR_IMPLEMENT(PRUint32) PR_vfprintf(PRFileDesc* fd, const char *fmt, va_list ap)
      57                 : {
      58                 :     /* XXX this could be better */
      59                 :     PRUint32 rv, len;
      60            1319 :     char* msg = PR_vsmprintf(fmt, ap);
      61            1319 :     if (NULL == msg) {
      62               0 :         return -1;
      63                 :     }
      64            1319 :     len = strlen(msg);
      65                 : #ifdef XP_OS2
      66                 :     /*
      67                 :      * OS/2 really needs a \r for every \n.
      68                 :      * In the future we should try to use scatter-gather instead of a
      69                 :      * succession of PR_Write.
      70                 :      */
      71                 :     if (isatty(PR_FileDesc2NativeHandle(fd))) {
      72                 :         PRUint32 last = 0, idx;
      73                 :         PRInt32 tmp;
      74                 :         rv = 0;
      75                 :         for (idx = 0; idx < len+1; idx++) {
      76                 :             if ((idx - last > 0) && (('\n' == msg[idx]) || (idx == len))) {
      77                 :                 tmp = PR_Write(fd, msg + last, idx - last);
      78                 :                 if (tmp >= 0) {
      79                 :                     rv += tmp;
      80                 :                 }
      81                 :                 last = idx;
      82                 :             }
      83                 :             /*
      84                 :              * if current character is \n, and
      85                 :              * previous character isn't \r, and
      86                 :              * next character isn't \r
      87                 :              */
      88                 :             if (('\n' == msg[idx]) &&
      89                 :                 ((0 == idx) || ('\r' != msg[idx-1])) &&
      90                 :                 ('\r' != msg[idx+1])) {
      91                 :                 /* add extra \r */
      92                 :                 tmp = PR_Write(fd, "\r", 1);
      93                 :                 if (tmp >= 0) {
      94                 :                     rv += tmp;
      95                 :                 }
      96                 :             }
      97                 :         }
      98                 :     } else {
      99                 :         rv = PR_Write(fd, msg, len);
     100                 :     }
     101                 : #else
     102            1319 :     rv = PR_Write(fd, msg, len);
     103                 : #endif
     104            1319 :     PR_DELETE(msg);
     105            1319 :     return rv;
     106                 : }

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