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1 /* |
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2 |
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3 Copyright (C) 2003 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_ls_oct_ascii_h) |
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25 #define octave_ls_oct_ascii_h 1 |
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26 |
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27 #include <cfloat> |
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28 |
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29 #include <string> |
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30 |
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31 #include "lo-sstream.h" |
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32 #include "str-vec.h" |
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33 |
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34 // Flag for cell elements |
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35 #define CELL_ELT_TAG "<cell-element>" |
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36 |
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37 // Used when converting Inf to something that gnuplot can read. |
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38 |
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39 #ifndef OCT_RBV |
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40 #define OCT_RBV DBL_MAX / 100.0 |
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41 #endif |
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42 |
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43 extern std::string |
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44 extract_keyword (std::istream& is, const char *keyword, |
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45 const bool next_only = false); |
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46 |
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47 extern std::string |
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48 read_ascii_data (std::istream& is, const std::string& filename, bool& global, |
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49 octave_value& tc, octave_idx_type count); |
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50 |
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51 extern bool |
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52 save_ascii_data (std::ostream& os, const octave_value& val_arg, |
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53 const std::string& name, bool& infnan_warned, |
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54 bool strip_nan_and_inf, bool mark_as_global, |
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55 int precision); |
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56 |
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57 extern bool |
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58 save_ascii_data_for_plotting (std::ostream& os, const octave_value& t, |
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59 const std::string& name); |
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60 |
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61 // Match KEYWORD on stream IS, placing the associated value in VALUE, |
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62 // returning TRUE if successful and FALSE otherwise. |
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63 // |
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64 // Input should look something like: |
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65 // |
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66 // [%#][ \t]*keyword[ \t]*int-value.*\n |
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67 |
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68 template <class T> |
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69 bool |
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70 extract_keyword (std::istream& is, const char *keyword, T& value, |
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71 const bool next_only = false) |
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72 { |
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73 bool status = false; |
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74 value = 0; |
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75 |
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76 char c; |
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77 while (is.get (c)) |
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78 { |
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79 if (c == '%' || c == '#') |
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80 { |
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81 OSSTREAM buf; |
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82 |
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83 while (is.get (c) && (c == ' ' || c == '\t' || c == '%' || c == '#')) |
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84 ; // Skip whitespace and comment characters. |
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85 |
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86 if (isalpha (c)) |
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87 buf << c; |
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88 |
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89 while (is.get (c) && isalpha (c)) |
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90 buf << c; |
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91 |
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92 buf << OSSTREAM_ENDS; |
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93 std::string tmp = OSSTREAM_STR (buf); |
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94 bool match = (tmp.compare (0, strlen (keyword), keyword) == 0); |
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95 OSSTREAM_FREEZE (buf); |
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96 |
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97 if (match) |
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98 { |
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99 while (is.get (c) && (c == ' ' || c == '\t' || c == ':')) |
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100 ; // Skip whitespace and the colon. |
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101 |
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102 is.putback (c); |
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103 if (c != '\n') |
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104 is >> value; |
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105 if (is) |
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106 status = true; |
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107 while (is.get (c) && c != '\n') |
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108 ; // Skip to beginning of next line; |
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109 break; |
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110 } |
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111 else if (next_only) |
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112 break; |
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113 } |
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114 } |
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115 return status; |
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116 } |
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117 |
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118 // Match one of the elements in KEYWORDS on stream IS, placing the |
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119 // matched keyword in KW and the associated value in VALUE, |
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120 // returning TRUE if successful and FALSE otherwise. |
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121 // |
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122 // Input should look something like: |
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123 // |
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124 // [%#][ \t]*keyword[ \t]*int-value.*\n |
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125 |
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126 template <class T> |
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127 bool |
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128 extract_keyword (std::istream& is, const string_vector& keywords, |
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129 std::string& kw, T& value, const bool next_only = false) |
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130 { |
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131 bool status = false; |
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132 kw = ""; |
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133 value = 0; |
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134 |
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135 char c; |
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136 while (is.get (c)) |
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137 { |
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138 if (c == '%' || c == '#') |
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139 { |
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140 OSSTREAM buf; |
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141 |
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142 while (is.get (c) && (c == ' ' || c == '\t' || c == '%' || c == '#')) |
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143 ; // Skip whitespace and comment characters. |
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144 |
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145 if (isalpha (c)) |
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146 buf << c; |
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147 |
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148 while (is.get (c) && isalpha (c)) |
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149 buf << c; |
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150 |
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151 buf << OSSTREAM_ENDS; |
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152 std::string tmp = OSSTREAM_STR (buf); |
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153 OSSTREAM_FREEZE (buf); |
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154 |
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155 for (int i = 0; i < keywords.length (); i++) |
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156 { |
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157 int match = (tmp == keywords[i]); |
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158 |
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159 if (match) |
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160 { |
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161 kw = keywords[i]; |
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162 |
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163 while (is.get (c) && (c == ' ' || c == '\t' || c == ':')) |
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164 ; // Skip whitespace and the colon. |
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165 |
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166 is.putback (c); |
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167 if (c != '\n') |
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168 is >> value; |
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169 if (is) |
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170 status = true; |
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171 while (is.get (c) && c != '\n') |
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172 ; // Skip to beginning of next line; |
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173 return status; |
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174 } |
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175 } |
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176 |
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177 if (next_only) |
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178 break; |
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179 } |
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180 } |
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181 return status; |
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182 } |
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183 |
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184 #endif |
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185 |
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186 /* |
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187 ;;; Local Variables: *** |
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188 ;;; mode: C++ *** |
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189 ;;; End: *** |
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190 */ |
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191 |
