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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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3268
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27 #include <cassert> |
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2215
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28 #include <cstring> |
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29 |
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3503
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30 #include <iomanip> |
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31 #include <fstream> |
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3535
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32 #include <string> |
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33 |
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34 #include "lo-ieee.h" |
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35 #include "lo-mappers.h" |
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4051
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36 #include "lo-sstream.h" |
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37 #include "lo-utils.h" |
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38 #include "str-vec.h" |
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4153
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39 #include "quit.h" |
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40 |
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41 #include "error.h" |
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3342
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42 #include "input.h" |
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3775
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43 #include "oct-stdstrm.h" |
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44 #include "oct-stream.h" |
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2877
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45 #include "oct-obj.h" |
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46 #include "utils.h" |
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47 |
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48 // Possible values for conv_err: |
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49 // |
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50 // 1 : not a real scalar |
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2902
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51 // 2 : value is NaN |
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52 // 3 : value is not an integer |
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53 |
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54 static int |
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55 convert_to_valid_int (const octave_value& tc, int& conv_err) |
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56 { |
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57 int retval = 0; |
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58 |
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59 conv_err = 0; |
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60 |
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2902
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61 double dval = tc.double_value (); |
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62 |
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63 if (! error_state) |
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64 { |
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4693
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65 if (! lo_ieee_is_NaN_or_NA (dval)) |
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66 { |
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2902
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67 int ival = NINT (dval); |
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68 |
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69 if (ival == dval) |
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70 retval = ival; |
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71 else |
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72 conv_err = 3; |
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73 } |
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74 else |
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75 conv_err = 2; |
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76 } |
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77 else |
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78 conv_err = 1; |
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79 |
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80 return retval; |
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81 } |
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82 |
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83 static int |
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84 get_size (double d, const std::string& who) |
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85 { |
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86 int retval = -1; |
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87 |
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4693
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88 if (! lo_ieee_is_NaN_or_NA (d)) |
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89 { |
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90 if (! xisinf (d)) |
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91 { |
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3268
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92 if (d >= 0.0) |
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93 retval = NINT (d); |
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94 else |
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95 ::error ("%s: negative value invalid as size specification", |
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96 who.c_str ()); |
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97 } |
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98 else |
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99 retval = -1; |
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100 } |
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101 else |
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102 ::error ("%s: NaN is invalid as size specification", who.c_str ()); |
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103 |
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104 return retval; |
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105 } |
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106 |
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107 static void |
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3810
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108 get_size (const Array<double>& size, int& nr, int& nc, bool& one_elt_size_spec, |
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109 const std::string& who) |
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110 { |
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111 nr = -1; |
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112 nc = -1; |
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113 |
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114 one_elt_size_spec = false; |
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115 |
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116 double dnr = -1.0; |
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117 double dnc = -1.0; |
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118 |
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3810
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119 int sz_len = size.length (); |
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120 |
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121 if (sz_len == 1) |
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2601
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122 { |
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123 one_elt_size_spec = true; |
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124 |
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3810
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125 dnr = size (0); |
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126 |
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127 dnc = (dnr == 0.0) ? 0.0 : 1.0; |
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2601
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128 } |
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3810
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129 else if (sz_len == 2) |
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130 { |
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3810
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131 dnr = size (0); |
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132 |
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133 if (! xisinf (dnr)) |
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134 dnc = size (1); |
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135 else |
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136 ::error ("%s: invalid size specification", who.c_str ()); |
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137 } |
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138 else |
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139 ::error ("%s: invalid size specification", who.c_str ()); |
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140 |
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141 if (! error_state) |
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142 { |
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4468
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143 nr = get_size (dnr, who); |
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144 |
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145 if (! error_state && dnc >= 0.0) |
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4468
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146 nc = get_size (dnc, who); |
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2117
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147 } |
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148 } |
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149 |
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3523
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150 scanf_format_list::scanf_format_list (const std::string& s) |
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151 : nconv (0), curr_idx (0), list (16), buf (0) |
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152 { |
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153 int num_elts = 0; |
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154 |
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155 int n = s.length (); |
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156 |
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157 int i = 0; |
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158 |
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2215
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159 int width = 0; |
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160 bool discard = false; |
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161 char modifier = '\0'; |
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162 char type = '\0'; |
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163 |
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164 bool have_more = true; |
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165 |
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166 while (i < n) |
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167 { |
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168 have_more = true; |
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169 |
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170 if (! buf) |
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4051
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171 buf = new OSSTREAM (); |
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172 |
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173 if (s[i] == '%') |
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174 { |
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3483
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175 // Process percent-escape conversion type. |
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176 |
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2215
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177 process_conversion (s, i, n, width, discard, type, modifier, |
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178 num_elts); |
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179 have_more = (buf != 0); |
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180 } |
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3483
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181 else if (isspace (s[i])) |
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182 { |
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183 type = scanf_format_elt::whitespace_conversion; |
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184 |
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185 width = 0; |
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186 discard = false; |
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187 modifier = '\0'; |
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188 *buf << " "; |
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189 |
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190 while (++i < n && isspace (s[i])) |
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191 /* skip whitespace */; |
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192 |
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193 add_elt_to_list (width, discard, type, modifier, num_elts); |
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194 |
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195 have_more = false; |
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196 } |
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197 else |
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198 { |
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199 type = scanf_format_elt::literal_conversion; |
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200 |
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201 width = 0; |
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202 discard = false; |
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203 modifier = '\0'; |
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204 |
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205 while (i < n && ! isspace (s[i]) && s[i] != '%') |
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206 *buf << s[i++]; |
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207 |
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208 add_elt_to_list (width, discard, type, modifier, num_elts); |
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209 |
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210 have_more = false; |
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211 } |
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212 |
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213 if (nconv < 0) |
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214 { |
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215 have_more = false; |
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216 break; |
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217 } |
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218 } |
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219 |
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220 if (have_more) |
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2215
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221 add_elt_to_list (width, discard, type, modifier, num_elts); |
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222 |
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223 list.resize (num_elts); |
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224 |
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225 delete buf; |
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226 } |
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227 |
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228 scanf_format_list::~scanf_format_list (void) |
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229 { |
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230 int n = list.length (); |
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231 |
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232 for (int i = 0; i < n; i++) |
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233 { |
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3340
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234 scanf_format_elt *elt = list(i); |
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235 delete elt; |
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236 } |
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237 } |
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238 |
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239 void |
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2215
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240 scanf_format_list::add_elt_to_list (int width, bool discard, char type, |
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3483
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241 char modifier, int& num_elts, |
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3523
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242 const std::string& char_class) |
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2117
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243 { |
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244 if (buf) |
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245 { |
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4051
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246 *buf << OSSTREAM_ENDS; |
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247 |
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248 std::string text = OSSTREAM_STR (*buf); |
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249 |
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250 OSSTREAM_FREEZE (*buf); |
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251 |
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252 if (! text.empty ()) |
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2117
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253 { |
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4051
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254 scanf_format_elt *elt |
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255 = new scanf_format_elt (text.c_str (), width, discard, type, |
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256 modifier, char_class); |
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257 |
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258 if (num_elts == list.length ()) |
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259 list.resize (2 * num_elts); |
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260 |
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261 list(num_elts++) = elt; |
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2117
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262 } |
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263 |
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264 delete buf; |
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265 buf = 0; |
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266 } |
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267 } |
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268 |
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3535
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269 static std::string |
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3523
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270 expand_char_class (const std::string& s) |
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3483
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271 { |
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3523
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272 std::string retval; |
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3483
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273 |
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274 size_t len = s.length (); |
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275 |
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276 size_t i = 0; |
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277 |
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278 while (i < len) |
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279 { |
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280 unsigned char c = s[i++]; |
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281 |
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282 if (c == '-' && i > 1 && i < len |
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283 && (unsigned char) s[i-2] <= (unsigned char) s[i]) |
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284 { |
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285 // Add all characters from the range except the first (we |
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286 // already added it below). |
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287 |
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288 for (c = s[i-2]+1; c < s[i]; c++) |
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289 retval += c; |
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290 } |
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291 else |
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292 { |
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293 // Add the character to the class. Only add '-' if it is |
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294 // the last character in the class. |
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295 |
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296 if (c != '-' || i == len) |
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297 retval += c; |
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298 } |
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299 } |
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300 |
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301 return retval; |
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302 } |
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303 |
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2117
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304 void |
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3523
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305 scanf_format_list::process_conversion (const std::string& s, int& i, int n, |
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2215
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306 int& width, bool& discard, char& type, |
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2117
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307 char& modifier, int& num_elts) |
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308 { |
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2215
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309 width = 0; |
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2117
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310 discard = false; |
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311 modifier = '\0'; |
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312 type = '\0'; |
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313 |
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314 *buf << s[i++]; |
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315 |
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316 bool have_width = false; |
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317 |
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318 while (i < n) |
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319 { |
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320 switch (s[i]) |
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321 { |
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322 case '*': |
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323 if (discard) |
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324 nconv = -1; |
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325 else |
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326 { |
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327 discard = true; |
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328 *buf << s[i++]; |
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329 } |
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330 break; |
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331 |
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332 case '0': case '1': case '2': case '3': case '4': |
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333 case '5': case '6': case '7': case '8': case '9': |
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334 if (have_width) |
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335 nconv = -1; |
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336 else |
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337 { |
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2215
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338 char c = s[i++]; |
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339 width = width * 10 + c - '0'; |
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2117
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340 have_width = true; |
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2215
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341 *buf << c; |
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2117
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342 while (i < n && isdigit (s[i])) |
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2215
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343 { |
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344 c = s[i++]; |
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345 width = width * 10 + c - '0'; |
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346 *buf << c; |
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347 } |
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2117
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348 } |
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349 break; |
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350 |
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351 case 'h': case 'l': case 'L': |
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352 if (modifier != '\0') |
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353 nconv = -1; |
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354 else |
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2663
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355 modifier = s[i++]; |
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2117
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356 break; |
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357 |
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358 case 'd': case 'i': case 'o': case 'u': case 'x': |
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359 if (modifier == 'L') |
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360 { |
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361 nconv = -1; |
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362 break; |
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363 } |
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364 goto fini; |
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365 |
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366 case 'e': case 'f': case 'g': |
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367 if (modifier == 'h') |
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368 { |
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369 nconv = -1; |
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370 break; |
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371 } |
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2663
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372 |
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373 // No float or long double conversions, thanks. |
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374 *buf << 'l'; |
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375 |
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2117
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376 goto fini; |
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377 |
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378 case 'c': case 's': case 'p': case '%': case '[': |
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379 if (modifier != '\0') |
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380 { |
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381 nconv = -1; |
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382 break; |
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383 } |
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384 goto fini; |
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385 |
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386 fini: |
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387 { |
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2215
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388 if (finish_conversion (s, i, n, width, discard, type, |
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2117
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389 modifier, num_elts) == 0) |
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390 return; |
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391 } |
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392 break; |
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393 |
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394 default: |
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395 nconv = -1; |
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396 break; |
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397 } |
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398 |
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399 if (nconv < 0) |
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400 break; |
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401 } |
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402 |
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403 nconv = -1; |
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404 } |
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405 |
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406 int |
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3523
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407 scanf_format_list::finish_conversion (const std::string& s, int& i, int n, |
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2215
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408 int& width, bool discard, char& type, |
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2117
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409 char modifier, int& num_elts) |
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410 { |
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411 int retval = 0; |
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412 |
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3523
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413 std::string char_class; |
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3483
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414 |
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3640
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415 int beg_idx = -1; |
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416 int end_idx = -1; |
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417 |
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2117
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418 if (s[i] == '%') |
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3640
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419 { |
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420 type = '%'; |
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421 *buf << s[i++]; |
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422 } |
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2117
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423 else |
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424 { |
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425 type = s[i]; |
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426 |
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427 if (s[i] == '[') |
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428 { |
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429 *buf << s[i++]; |
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430 |
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431 if (i < n) |
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432 { |
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3483
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433 beg_idx = i; |
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434 |
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2117
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435 if (s[i] == '^') |
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436 { |
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437 type = '^'; |
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438 *buf << s[i++]; |
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3483
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439 |
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440 if (i < n) |
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441 { |
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442 beg_idx = i; |
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443 |
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444 if (s[i] == ']') |
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445 *buf << s[i++]; |
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446 } |
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2117
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447 } |
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448 else if (s[i] == ']') |
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449 *buf << s[i++]; |
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450 } |
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451 |
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452 while (i < n && s[i] != ']') |
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453 *buf << s[i++]; |
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454 |
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455 if (i < n && s[i] == ']') |
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3483
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456 { |
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457 end_idx = i-1; |
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458 *buf << s[i++]; |
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459 } |
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2117
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460 |
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461 if (s[i-1] != ']') |
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462 retval = nconv = -1; |
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463 } |
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464 else |
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2215
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465 *buf << s[i++]; |
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3640
|
466 } |
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467 |
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468 nconv++; |
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469 |
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470 if (nconv > 0) |
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471 { |
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472 if (beg_idx >= 0 && end_idx >= 0) |
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473 char_class = expand_char_class (s.substr (beg_idx, |
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474 end_idx - beg_idx + 1)); |
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475 |
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476 add_elt_to_list (width, discard, type, modifier, num_elts, char_class); |
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2117
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477 } |
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478 |
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479 return retval; |
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480 } |
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481 |
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482 void |
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483 scanf_format_list::printme (void) const |
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484 { |
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|
485 int n = list.length (); |
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486 |
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487 for (int i = 0; i < n; i++) |
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|
488 { |
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3340
|
489 scanf_format_elt *elt = list(i); |
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2117
|
490 |
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3531
|
491 std::cerr |
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|
492 << "width: " << elt->width << "\n" |
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|
493 << "discard: " << elt->discard << "\n" |
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|
494 << "type: "; |
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3483
|
495 |
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496 if (elt->type == scanf_format_elt::literal_conversion) |
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3531
|
497 std::cerr << "literal text\n"; |
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3483
|
498 else if (elt->type == scanf_format_elt::whitespace_conversion) |
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3531
|
499 std::cerr << "whitespace\n"; |
|
3483
|
500 else |
|
3531
|
501 std::cerr << elt->type << "\n"; |
|
|
502 |
|
|
503 std::cerr |
|
|
504 << "modifier: " << elt->modifier << "\n" |
|
|
505 << "char_class: `" << undo_string_escapes (elt->char_class) << "'\n" |
|
|
506 << "text: `" << undo_string_escapes (elt->text) << "'\n\n"; |
|
2117
|
507 } |
|
|
508 } |
|
|
509 |
|
|
510 bool |
|
|
511 scanf_format_list::all_character_conversions (void) |
|
|
512 { |
|
|
513 int n = list.length (); |
|
|
514 |
|
|
515 if (n > 0) |
|
|
516 { |
|
|
517 for (int i = 0; i < n; i++) |
|
|
518 { |
|
3340
|
519 scanf_format_elt *elt = list(i); |
|
2117
|
520 |
|
|
521 switch (elt->type) |
|
|
522 { |
|
3483
|
523 case 'c': case 's': case '%': case '[': case '^': |
|
|
524 case scanf_format_elt::literal_conversion: |
|
|
525 case scanf_format_elt::whitespace_conversion: |
|
2117
|
526 break; |
|
|
527 |
|
|
528 default: |
|
|
529 return false; |
|
|
530 break; |
|
|
531 } |
|
|
532 } |
|
|
533 |
|
|
534 return true; |
|
|
535 } |
|
|
536 else |
|
|
537 return false; |
|
|
538 } |
|
|
539 |
|
|
540 bool |
|
|
541 scanf_format_list::all_numeric_conversions (void) |
|
|
542 { |
|
|
543 int n = list.length (); |
|
|
544 |
|
|
545 if (n > 0) |
|
|
546 { |
|
|
547 for (int i = 0; i < n; i++) |
|
|
548 { |
|
3340
|
549 scanf_format_elt *elt = list(i); |
|
2117
|
550 |
|
|
551 switch (elt->type) |
|
|
552 { |
|
|
553 case 'd': case 'i': case 'o': case 'u': case 'x': |
|
|
554 case 'e': case 'f': case 'g': |
|
|
555 break; |
|
|
556 |
|
|
557 default: |
|
|
558 return false; |
|
|
559 break; |
|
|
560 } |
|
|
561 } |
|
|
562 |
|
|
563 return true; |
|
|
564 } |
|
|
565 else |
|
|
566 return false; |
|
|
567 } |
|
|
568 |
|
|
569 // Ugh again. |
|
|
570 |
|
3523
|
571 printf_format_list::printf_format_list (const std::string& s) |
|
2117
|
572 : nconv (0), curr_idx (0), list (16), buf (0) |
|
|
573 { |
|
|
574 int num_elts = 0; |
|
|
575 |
|
|
576 int n = s.length (); |
|
|
577 |
|
|
578 int i = 0; |
|
|
579 |
|
|
580 int args = 0; |
|
3643
|
581 std::string flags; |
|
3640
|
582 int fw = 0; |
|
|
583 int prec = 0; |
|
2117
|
584 char modifier = '\0'; |
|
|
585 char type = '\0'; |
|
|
586 |
|
|
587 bool have_more = true; |
|
3640
|
588 bool empty_buf = true; |
|
2117
|
589 |
|
4223
|
590 if (n == 0) |
|
2117
|
591 { |
|
4223
|
592 printf_format_elt *elt |
|
|
593 = new printf_format_elt ("", args, fw, prec, flags, type, modifier); |
|
|
594 |
|
|
595 list(num_elts++) = elt; |
|
|
596 |
|
|
597 list.resize (num_elts); |
|
|
598 } |
|
|
599 else |
|
|
600 { |
|
|
601 while (i < n) |
|
3640
|
602 { |
|
4223
|
603 have_more = true; |
|
|
604 |
|
|
605 if (! buf) |
|
|
606 { |
|
|
607 buf = new OSSTREAM (); |
|
|
608 empty_buf = true; |
|
|
609 } |
|
|
610 |
|
|
611 switch (s[i]) |
|
|
612 { |
|
|
613 case '%': |
|
3640
|
614 { |
|
4223
|
615 if (empty_buf) |
|
|
616 { |
|
|
617 process_conversion (s, i, n, args, flags, fw, prec, |
|
|
618 type, modifier, num_elts); |
|
|
619 |
|
|
620 have_more = (buf != 0); |
|
|
621 } |
|
|
622 else |
|
|
623 add_elt_to_list (args, flags, fw, prec, type, modifier, |
|
|
624 num_elts); |
|
3640
|
625 } |
|
4223
|
626 break; |
|
|
627 |
|
|
628 default: |
|
|
629 { |
|
|
630 args = 0; |
|
|
631 flags = ""; |
|
|
632 fw = 0; |
|
|
633 prec = 0; |
|
|
634 modifier = '\0'; |
|
|
635 type = '\0'; |
|
|
636 *buf << s[i++]; |
|
|
637 empty_buf = false; |
|
|
638 } |
|
|
639 break; |
|
|
640 } |
|
|
641 |
|
|
642 if (nconv < 0) |
|
|
643 { |
|
|
644 have_more = false; |
|
|
645 break; |
|
|
646 } |
|
2117
|
647 } |
|
|
648 |
|
4223
|
649 if (have_more) |
|
|
650 add_elt_to_list (args, flags, fw, prec, type, modifier, num_elts); |
|
|
651 |
|
|
652 list.resize (num_elts); |
|
|
653 |
|
|
654 delete buf; |
|
2117
|
655 } |
|
|
656 } |
|
|
657 |
|
|
658 printf_format_list::~printf_format_list (void) |
|
|
659 { |
|
|
660 int n = list.length (); |
|
|
661 |
|
|
662 for (int i = 0; i < n; i++) |
|
|
663 { |
|
3340
|
664 printf_format_elt *elt = list(i); |
|
2117
|
665 delete elt; |
|
|
666 } |
|
|
667 } |
|
|
668 |
|
|
669 void |
|
3640
|
670 printf_format_list::add_elt_to_list (int args, const std::string& flags, |
|
|
671 int fw, int prec, char type, |
|
|
672 char modifier, int& num_elts) |
|
2117
|
673 { |
|
|
674 if (buf) |
|
|
675 { |
|
4051
|
676 *buf << OSSTREAM_ENDS; |
|
|
677 |
|
|
678 std::string text = OSSTREAM_STR (*buf); |
|
|
679 |
|
|
680 OSSTREAM_FREEZE (*buf); |
|
|
681 |
|
|
682 if (! text.empty ()) |
|
2117
|
683 { |
|
4051
|
684 printf_format_elt *elt |
|
|
685 = new printf_format_elt (text.c_str (), args, fw, prec, flags, |
|
|
686 type, modifier); |
|
|
687 |
|
|
688 if (num_elts == list.length ()) |
|
|
689 list.resize (2 * num_elts); |
|
|
690 |
|
|
691 list(num_elts++) = elt; |
|
2117
|
692 } |
|
|
693 |
|
|
694 delete buf; |
|
|
695 buf = 0; |
|
|
696 } |
|
|
697 } |
|
|
698 |
|
|
699 void |
|
3640
|
700 printf_format_list::process_conversion |
|
|
701 (const std::string& s, int& i, int n, int& args, std::string& flags, |
|
|
702 int& fw, int& prec, char& modifier, char& type, int& num_elts) |
|
2117
|
703 { |
|
|
704 args = 0; |
|
3640
|
705 flags = ""; |
|
|
706 fw = 0; |
|
|
707 prec = 0; |
|
2117
|
708 modifier = '\0'; |
|
|
709 type = '\0'; |
|
|
710 |
|
|
711 *buf << s[i++]; |
|
|
712 |
|
4587
|
713 bool nxt = false; |
|
2117
|
714 |
|
|
715 while (i < n) |
|
|
716 { |
|
|
717 switch (s[i]) |
|
|
718 { |
|
|
719 case '-': case '+': case ' ': case '0': case '#': |
|
3640
|
720 flags += s[i]; |
|
2117
|
721 *buf << s[i++]; |
|
|
722 break; |
|
|
723 |
|
|
724 default: |
|
4587
|
725 nxt = true; |
|
2117
|
726 break; |
|
|
727 } |
|
|
728 |
|
4587
|
729 if (nxt) |
|
2117
|
730 break; |
|
|
731 } |
|
|
732 |
|
|
733 if (i < n) |
|
|
734 { |
|
|
735 if (s[i] == '*') |
|
|
736 { |
|
3640
|
737 fw = -1; |
|
2117
|
738 args++; |
|
|
739 *buf << s[i++]; |
|
|
740 } |
|
|
741 else |
|
|
742 { |
|
3640
|
743 if (isdigit (s[i])) |
|
|
744 { |
|
4587
|
745 int nn = 0; |
|
3643
|
746 std::string tmp = s.substr (i); |
|
4587
|
747 sscanf (tmp.c_str (), "%d%n", &fw, &nn); |
|
3640
|
748 } |
|
|
749 |
|
2117
|
750 while (i < n && isdigit (s[i])) |
|
|
751 *buf << s[i++]; |
|
|
752 } |
|
|
753 } |
|
|
754 |
|
|
755 if (i < n && s[i] == '.') |
|
|
756 { |
|
|
757 *buf << s[i++]; |
|
|
758 |
|
|
759 if (i < n) |
|
|
760 { |
|
|
761 if (s[i] == '*') |
|
|
762 { |
|
3640
|
763 prec = -1; |
|
2117
|
764 args++; |
|
|
765 *buf << s[i++]; |
|
|
766 } |
|
|
767 else |
|
|
768 { |
|
3640
|
769 if (isdigit (s[i])) |
|
|
770 { |
|
4587
|
771 int nn = 0; |
|
3643
|
772 std::string tmp = s.substr (i); |
|
4587
|
773 sscanf (tmp.c_str (), "%d%n", &prec, &nn); |
|
3640
|
774 } |
|
|
775 |
|
2117
|
776 while (i < n && isdigit (s[i])) |
|
|
777 *buf << s[i++]; |
|
|
778 } |
|
|
779 } |
|
|
780 } |
|
|
781 |
|
|
782 if (i < n) |
|
|
783 { |
|
|
784 switch (s[i]) |
|
|
785 { |
|
|
786 case 'h': case 'l': case 'L': |
|
|
787 modifier = s[i]; |
|
|
788 *buf << s[i++]; |
|
|
789 break; |
|
|
790 |
|
|
791 default: |
|
|
792 break; |
|
|
793 } |
|
|
794 } |
|
|
795 |
|
|
796 if (i < n) |
|
3640
|
797 finish_conversion (s, i, args, flags, fw, prec, modifier, type, num_elts); |
|
2117
|
798 else |
|
|
799 nconv = -1; |
|
|
800 } |
|
|
801 |
|
|
802 void |
|
3640
|
803 printf_format_list::finish_conversion |
|
|
804 (const std::string& s, int& i, int args, const std::string& flags, |
|
|
805 int fw, int prec, char modifier, char& type, int& num_elts) |
|
2117
|
806 |
|
|
807 { |
|
|
808 switch (s[i]) |
|
|
809 { |
|
|
810 case 'd': case 'i': case 'o': case 'x': case 'X': |
|
|
811 case 'u': case 'c': |
|
|
812 if (modifier == 'L') |
|
|
813 { |
|
|
814 nconv = -1; |
|
|
815 break; |
|
|
816 } |
|
|
817 goto fini; |
|
|
818 |
|
|
819 case 'f': case 'e': case 'E': case 'g': case 'G': |
|
|
820 if (modifier == 'h' || modifier == 'l') |
|
|
821 { |
|
|
822 nconv = -1; |
|
|
823 break; |
|
|
824 } |
|
|
825 goto fini; |
|
|
826 |
|
|
827 case 's': case 'p': case '%': |
|
|
828 if (modifier != '\0') |
|
|
829 { |
|
|
830 nconv = -1; |
|
|
831 break; |
|
|
832 } |
|
|
833 goto fini; |
|
|
834 |
|
|
835 fini: |
|
|
836 |
|
3640
|
837 type = s[i]; |
|
|
838 |
|
|
839 *buf << s[i++]; |
|
|
840 |
|
|
841 if (type != '%' || args != 0) |
|
|
842 nconv++; |
|
|
843 |
|
|
844 if (type != '%') |
|
|
845 args++; |
|
|
846 |
|
|
847 add_elt_to_list (args, flags, fw, prec, type, modifier, num_elts); |
|
|
848 |
|
2117
|
849 break; |
|
|
850 |
|
|
851 default: |
|
|
852 nconv = -1; |
|
|
853 break; |
|
|
854 } |
|
|
855 } |
|
|
856 |
|
|
857 void |
|
|
858 printf_format_list::printme (void) const |
|
|
859 { |
|
|
860 int n = list.length (); |
|
|
861 |
|
|
862 for (int i = 0; i < n; i++) |
|
|
863 { |
|
3340
|
864 printf_format_elt *elt = list(i); |
|
2117
|
865 |
|
3640
|
866 std::cerr |
|
|
867 << "args: " << elt->args << "\n" |
|
|
868 << "flags: `" << elt->flags << "'\n" |
|
|
869 << "width: " << elt->fw << "\n" |
|
|
870 << "prec: " << elt->prec << "\n" |
|
|
871 << "type: `" << elt->type << "'\n" |
|
|
872 << "modifier: `" << elt->modifier << "'\n" |
|
|
873 << "text: `" << undo_string_escapes (elt->text) << "'\n\n"; |
|
2117
|
874 } |
|
|
875 } |
|
|
876 |
|
3145
|
877 int |
|
3148
|
878 octave_base_stream::file_number (void) |
|
3145
|
879 { |
|
|
880 // Kluge alert! |
|
|
881 |
|
|
882 if (name () == "stdin") |
|
|
883 return 0; |
|
|
884 |
|
|
885 if (name () == "stdout") |
|
|
886 return 1; |
|
|
887 |
|
|
888 if (name () == "stderr") |
|
|
889 return 2; |
|
|
890 |
|
|
891 int retval = -1; |
|
|
892 |
|
3523
|
893 std::istream *is = input_stream (); |
|
|
894 std::ostream *os = output_stream (); |
|
3145
|
895 |
|
3775
|
896 // There is no standard way to get the underlying file descriptor from |
|
|
897 // std::filebuf (nor in the GNU libstdc++-v3 implementation). We cache |
|
|
898 // the descriptor in c_file_ptr_buf, and then extract it here. |
|
|
899 |
|
|
900 c_file_ptr_buf *ibuf = is ? |
|
|
901 dynamic_cast<c_file_ptr_buf *> (is->rdbuf ()) : 0; |
|
|
902 c_file_ptr_buf *obuf = os ? |
|
|
903 dynamic_cast<c_file_ptr_buf *> (os->rdbuf ()) : 0; |
|
|
904 |
|
|
905 int i_fid = ibuf ? ibuf->file_number () : -1; |
|
|
906 int o_fid = obuf ? obuf->file_number () : -1; |
|
3145
|
907 |
|
|
908 if (i_fid >= 0) |
|
|
909 { |
|
|
910 if (o_fid >= 0) |
|
|
911 retval = (i_fid == o_fid) ? i_fid : -1; |
|
|
912 else |
|
|
913 retval = i_fid; |
|
|
914 } |
|
|
915 else if (o_fid >= 0) |
|
|
916 retval = o_fid; |
|
|
917 |
|
|
918 return retval; |
|
|
919 } |
|
|
920 |
|
2117
|
921 void |
|
3523
|
922 octave_base_stream::error (const std::string& msg) |
|
2117
|
923 { |
|
|
924 fail = true; |
|
|
925 errmsg = msg; |
|
|
926 } |
|
|
927 |
|
|
928 void |
|
4468
|
929 octave_base_stream::error (const std::string& who, const std::string& msg) |
|
|
930 { |
|
|
931 fail = true; |
|
|
932 errmsg = who + msg; |
|
|
933 } |
|
|
934 |
|
|
935 void |
|
2117
|
936 octave_base_stream::clear (void) |
|
|
937 { |
|
|
938 fail = false; |
|
|
939 errmsg = ""; |
|
|
940 } |
|
|
941 |
|
|
942 // Functions that are defined for all input streams (input streams |
|
|
943 // are those that define is). |
|
|
944 |
|
3536
|
945 std::string |
|
2117
|
946 octave_base_stream::do_gets (int max_len, bool& err, |
|
4468
|
947 bool strip_newline, const std::string& who) |
|
2117
|
948 { |
|
3523
|
949 std::string retval; |
|
2117
|
950 |
|
|
951 err = false; |
|
|
952 |
|
3523
|
953 std::istream *isp = input_stream (); |
|
2117
|
954 |
|
|
955 if (isp) |
|
|
956 { |
|
3523
|
957 std::istream& is = *isp; |
|
2117
|
958 |
|
4051
|
959 OSSTREAM buf; |
|
2117
|
960 |
|
|
961 int c = 0; |
|
3553
|
962 int char_count = 0; |
|
2117
|
963 int newline_stripped = 0; |
|
|
964 |
|
|
965 while (is && (c = is.get ()) != EOF) |
|
|
966 { |
|
3553
|
967 char_count++; |
|
2117
|
968 |
|
|
969 if (c == '\n') |
|
|
970 { |
|
|
971 if (! strip_newline) |
|
|
972 buf << (char) c; |
|
|
973 else |
|
|
974 newline_stripped = 1; |
|
|
975 |
|
|
976 break; |
|
|
977 } |
|
|
978 else |
|
|
979 buf << (char) c; |
|
|
980 |
|
3553
|
981 if (max_len > 0 && char_count == max_len) |
|
2117
|
982 break; |
|
|
983 } |
|
|
984 |
|
4224
|
985 if (is.good () || (is.eof () && char_count > 0)) |
|
2117
|
986 { |
|
4051
|
987 buf << OSSTREAM_ENDS; |
|
|
988 retval = OSSTREAM_STR (buf); |
|
|
989 OSSTREAM_FREEZE (buf); |
|
2117
|
990 } |
|
4224
|
991 else |
|
|
992 { |
|
|
993 err = true; |
|
4468
|
994 |
|
4224
|
995 if (is.eof () && char_count == 0) |
|
4468
|
996 error (who, "at end of file"); |
|
4224
|
997 else |
|
4468
|
