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Annotation of GNUtools/libg++/libio/pfstream.cc, revision 1.1.1.1

1.1       root        1: /* This is part of libio/iostream, providing -*- C++ -*- input/output.
                      2: Copyright (C) 1993 Free Software Foundation
                      3: 
                      4: This file is part of the GNU IO Library.  This library is free
                      5: software; you can redistribute it and/or modify it under the
                      6: terms of the GNU General Public License as published by the
                      7: Free Software Foundation; either version 2, or (at your option)
                      8: any later version.
                      9: 
                     10: This library is distributed in the hope that it will be useful,
                     11: but WITHOUT ANY WARRANTY; without even the implied warranty of
                     12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     13: GNU General Public License for more details.
                     14: 
                     15: You should have received a copy of the GNU General Public License
                     16: along with GNU CC; see the file COPYING.  If not, write to
                     17: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
                     18: 
                     19: As a special exception, if you link this library with files
                     20: compiled with a GNU compiler to produce an executable, this does not cause
                     21: the resulting executable to be covered by the GNU General Public License.
                     22: This exception does not however invalidate any other reasons why
                     23: the executable file might be covered by the GNU General Public License. */
                     24: 
                     25: /* Written by Per Bothner ([email protected]). */
                     26: 
                     27: #ifdef __GNUG__
                     28: #pragma implementation
                     29: #endif
                     30: #include "libioP.h"
                     31: #include <pfstream.h>
                     32: #include <procbuf.h>
                     33: 
                     34: ipfstream::ipfstream(const char *name, int mode, int prot)
                     35: {
                     36:     const char* p;
                     37: 
                     38:     // Look for '| command' (as used by ftp).
                     39:     for (p = name; *p == ' ' || *p == '\t'; p++) ;
                     40:     if (*p == '|') {
                     41:        procbuf *pbuf = new procbuf();
                     42:        init(pbuf);
                     43:        if (pbuf->open(p+1, mode))
                     44:            set(ios::badbit);
                     45:        return;
                     46:     }
                     47: 
                     48:     // Look for 'command |'
                     49:     while (*p) p++; // Point to last 
                     50:     while (p[-1] == ' ' || p[-1] == '\t' || p[-1] == '\n') p--;
                     51:     if (p[-1] == '|') {
                     52:        // Must remove the final '|'.
                     53:        p--;
                     54: #ifdef __GNUC__
                     55:        char command[p-name+1];
                     56: #else
                     57:        char *command = new char[p-name+1];
                     58: #endif
                     59:         memcpy(command, name, p-name);
                     60:        command[p-name] = '\0';
                     61: 
                     62:        procbuf *pbuf = new procbuf();
                     63:        if (pbuf->open(command, mode))
                     64:            set(ios::badbit);
                     65: #ifndef __GNUC__
                     66:        delete command;
                     67: #endif
                     68:        return;
                     69:     }
                     70: 
                     71:     init(new filebuf());
                     72:     if (!rdbuf()->open(name, mode, prot))
                     73:        set(ios::badbit);
                     74: }
                     75: 
                     76: opfstream::opfstream(const char *name, int mode, int prot)
                     77: {
                     78:     const char *p;
                     79:     // Look for '| command'.
                     80:     for (p = name; *p == ' ' || *p == '\t'; p++) ;
                     81:     if (*p == '|') {
                     82:        procbuf *pbuf = new procbuf();
                     83:        init(pbuf);
                     84:        if (pbuf->open(p+1, mode))
                     85:            set(ios::badbit);
                     86:     }
                     87:     else {
                     88:        init(new filebuf());
                     89:        if (!rdbuf()->open(name, mode, prot))
                     90:            set(ios::badbit);
                     91:     }
                     92: }

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