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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_octave_stdiostream_h) |
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24 #define octave_octave_stdiostream_h 1 |
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25 |
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26 #include "oct-stream.h" |
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27 #include "c-file-ptr-stream.h" |
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28 |
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29 template <typename BUF_T, typename STREAM_T, typename FILE_T> |
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30 class |
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31 octave_tstdiostream : public octave_base_stream |
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32 { |
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33 public: |
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34 |
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35 octave_tstdiostream (const std::string& n, FILE_T f = 0, |
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36 std::ios::openmode m = std::ios::in|std::ios::out, |
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37 oct_mach_info::float_format ff |
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38 = oct_mach_info::native_float_format (), |
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39 typename BUF_T::close_fcn cf = BUF_T::fclose) |
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40 : octave_base_stream (m, ff), nm (n), md (m), |
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41 s (f ? new STREAM_T (f, cf) : 0) |
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42 { } |
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43 |
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44 static octave_stream |
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45 create (const std::string& n, FILE_T f = 0, |
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46 std::ios::openmode m = std::ios::in|std::ios::out, |
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47 oct_mach_info::float_format ff |
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48 = oct_mach_info::native_float_format (), |
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49 typename BUF_T::close_fcn cf = BUF_T::fclose) |
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50 { |
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51 return octave_stream (new octave_tstdiostream (n, f, m, ff, cf)); |
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52 } |
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53 |
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54 // Position a stream at OFFSET relative to ORIGIN. |
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55 |
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56 int seek (long offset, int origin) |
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57 { return s ? s->seek (offset, origin) : -1; } |
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58 |
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59 // Return current stream position. |
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60 |
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61 long tell (void) { return s ? s->tell () : -1; } |
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62 |
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63 // Return non-zero if EOF has been reached on this stream. |
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64 |
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65 bool eof (void) const { return s ? s->eof () : true; } |
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66 |
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67 // The name of the file. |
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68 |
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69 std::string name (void) const { return nm; } |
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70 |
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71 std::istream *input_stream (void) { return (md & std::ios::in) ? s : 0; } |
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72 |
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73 std::ostream *output_stream (void) { return (md & std::ios::out) ? s : 0; } |
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74 |
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75 // FIXME -- should not have to cast away const here. |
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76 BUF_T *rdbuf (void) const |
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77 { return s ? (const_cast<STREAM_T *> (s))->rdbuf () : 0; } |
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78 |
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79 bool bad (void) const { return s ? s->bad () : true; } |
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80 |
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81 void clear (void) { if (s) s->clear (); } |
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82 |
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83 void do_close (void) { if (s) s->close (); } |
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84 |
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85 protected: |
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86 |
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87 std::string nm; |
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88 |
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89 std::ios::openmode md; |
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90 |
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91 STREAM_T *s; |
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92 |
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93 ~octave_tstdiostream (void) { delete s; } |
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94 |
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95 private: |
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96 |
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97 // No copying! |
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98 |
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99 octave_tstdiostream (const octave_tstdiostream&); |
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100 |
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101 octave_tstdiostream& operator = (const octave_tstdiostream&); |
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102 }; |
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103 |
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104 typedef octave_tstdiostream<c_file_ptr_buf, io_c_file_ptr_stream, FILE *> octave_stdiostream; |
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105 |
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106 #ifdef HAVE_ZLIB |
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107 |
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108 typedef octave_tstdiostream<c_zfile_ptr_buf, io_c_zfile_ptr_stream, gzFile> octave_zstdiostream; |
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109 |
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110 #endif |
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111 |
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112 #endif |
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113 |
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114 /* |
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115 ;;; Local Variables: *** |
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116 ;;; mode: C++ *** |
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117 ;;; End: *** |
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118 */ |
