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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 2, or (at your option) any |
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10 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, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include <cstdio> |
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28 |
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29 #include "oct-stdstrm.h" |
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30 |
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31 octave_base_stdiostream::~octave_base_stdiostream (void) |
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32 { |
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33 if (fp) |
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34 { |
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35 fclose (fp); |
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36 fp = 0; |
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37 } |
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38 } |
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39 |
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40 // Position a stream at OFFSET relative to ORIGIN. |
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41 |
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42 int |
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43 octave_base_stdiostream::seek (std::streamoff offset, std::ios::seek_dir origin) |
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44 { |
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45 int retval = -1; |
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46 |
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47 if (! bad ()) |
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48 { |
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49 c_file_ptr_buf *sb = rdbuf (); |
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50 |
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51 if (sb) |
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52 { |
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53 clear (); |
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54 |
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55 sb->pubseekoff (offset, origin); |
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56 retval = bad () ? -1 : 0; |
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57 } |
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58 } |
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59 |
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60 return retval; |
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61 } |
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62 |
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63 // Return current stream position. |
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64 |
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65 long |
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66 octave_base_stdiostream::tell (void) const |
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67 { |
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68 long retval = -1; |
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69 |
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70 if (! bad ()) |
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71 { |
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72 c_file_ptr_buf *sb = rdbuf (); |
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73 |
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74 if (sb) |
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75 { |
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76 retval = static_cast<long> (sb->pubseekoff (0, std::ios::cur)); |
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77 |
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78 if (bad ()) |
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79 retval = -1; |
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80 } |
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81 } |
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82 |
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83 return retval; |
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84 } |
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85 |
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86 octave_stream |
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87 octave_istdiostream::create (const std::string& n, FILE *f, |
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88 std::ios::openmode arg_md, |
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89 oct_mach_info::float_format flt_fmt) |
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90 { |
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91 return octave_stream (new octave_istdiostream (n, f, arg_md, flt_fmt)); |
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92 } |
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93 |
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94 octave_istdiostream::octave_istdiostream (const std::string& n, FILE *f, |
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95 std::ios::openmode arg_md, |
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96 oct_mach_info::float_format flt_fmt) |
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97 : octave_base_stdiostream (n, f, arg_md, flt_fmt), is (0) |
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98 { |
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99 if (f) |
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100 is = new i_c_file_ptr_stream (f); |
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101 } |
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102 |
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103 octave_istdiostream::~octave_istdiostream (void) |
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104 { |
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105 delete is; |
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106 } |
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107 |
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108 octave_stream |
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109 octave_ostdiostream::create (const std::string& n, FILE *f, |
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110 std::ios::openmode arg_md, |
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111 oct_mach_info::float_format flt_fmt) |
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112 { |
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113 return octave_stream (new octave_ostdiostream (n, f, arg_md, flt_fmt)); |
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114 } |
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115 |
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116 octave_ostdiostream::octave_ostdiostream (const std::string& n, FILE *f, |
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117 std::ios::openmode arg_md, |
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118 oct_mach_info::float_format flt_fmt) |
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119 : octave_base_stdiostream (n, f, arg_md, flt_fmt), os (0) |
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120 { |
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121 if (f) |
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122 os = new o_c_file_ptr_stream (f); |
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123 } |
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124 |
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125 octave_ostdiostream::~octave_ostdiostream (void) |
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126 { |
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127 delete os; |
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128 } |
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129 |
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130 /* |
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131 ;;; Local Variables: *** |
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132 ;;; mode: C++ *** |
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133 ;;; End: *** |
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134 */ |
