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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT RUN-TIME COMPONENTS --
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4 -- --
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5 -- A D A . T E X T _ I O . E D I T I N G --
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6 -- --
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7 -- S p e c --
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8 -- --
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145
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9 -- Copyright (C) 1992-2019, Free Software Foundation, Inc. --
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111
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10 -- --
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11 -- This specification is derived from the Ada Reference Manual for use with --
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12 -- GNAT. The copyright notice above, and the license provisions that follow --
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13 -- apply solely to the contents of the part following the private keyword. --
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14 -- --
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15 -- GNAT is free software; you can redistribute it and/or modify it under --
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16 -- terms of the GNU General Public License as published by the Free Soft- --
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17 -- ware Foundation; either version 3, or (at your option) any later ver- --
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18 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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19 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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20 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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21 -- --
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22 -- As a special exception under Section 7 of GPL version 3, you are granted --
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23 -- additional permissions described in the GCC Runtime Library Exception, --
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24 -- version 3.1, as published by the Free Software Foundation. --
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25 -- --
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26 -- You should have received a copy of the GNU General Public License and --
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27 -- a copy of the GCC Runtime Library Exception along with this program; --
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28 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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29 -- <http://www.gnu.org/licenses/>. --
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30 -- --
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31 -- GNAT was originally developed by the GNAT team at New York University. --
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32 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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33 -- --
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34 ------------------------------------------------------------------------------
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35
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36 package Ada.Text_IO.Editing is
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37
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38 type Picture is private;
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39
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40 function Valid
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41 (Pic_String : String;
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42 Blank_When_Zero : Boolean := False) return Boolean;
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43
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44 function To_Picture
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45 (Pic_String : String;
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46 Blank_When_Zero : Boolean := False) return Picture;
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47
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48 function Pic_String (Pic : Picture) return String;
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49 function Blank_When_Zero (Pic : Picture) return Boolean;
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50
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51 Max_Picture_Length : constant := 64;
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52
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53 Picture_Error : exception;
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54
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55 Default_Currency : constant String := "$";
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56 Default_Fill : constant Character := '*';
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57 Default_Separator : constant Character := ',';
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58 Default_Radix_Mark : constant Character := '.';
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59
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60 generic
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61 type Num is delta <> digits <>;
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62 Default_Currency : String := Editing.Default_Currency;
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63 Default_Fill : Character := Editing.Default_Fill;
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64 Default_Separator : Character := Editing.Default_Separator;
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65 Default_Radix_Mark : Character := Editing.Default_Radix_Mark;
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66
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67 package Decimal_Output is
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68
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69 function Length
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70 (Pic : Picture;
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71 Currency : String := Default_Currency) return Natural;
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72
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73 function Valid
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74 (Item : Num;
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75 Pic : Picture;
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76 Currency : String := Default_Currency) return Boolean;
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77
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78 function Image
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79 (Item : Num;
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80 Pic : Picture;
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81 Currency : String := Default_Currency;
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82 Fill : Character := Default_Fill;
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83 Separator : Character := Default_Separator;
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84 Radix_Mark : Character := Default_Radix_Mark) return String;
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85
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86 procedure Put
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87 (File : Ada.Text_IO.File_Type;
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88 Item : Num;
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89 Pic : Picture;
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90 Currency : String := Default_Currency;
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91 Fill : Character := Default_Fill;
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92 Separator : Character := Default_Separator;
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93 Radix_Mark : Character := Default_Radix_Mark);
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94
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95 procedure Put
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96 (Item : Num;
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97 Pic : Picture;
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98 Currency : String := Default_Currency;
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99 Fill : Character := Default_Fill;
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100 Separator : Character := Default_Separator;
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101 Radix_Mark : Character := Default_Radix_Mark);
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102
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103 procedure Put
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104 (To : out String;
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105 Item : Num;
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106 Pic : Picture;
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107 Currency : String := Default_Currency;
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108 Fill : Character := Default_Fill;
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109 Separator : Character := Default_Separator;
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110 Radix_Mark : Character := Default_Radix_Mark);
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111
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112 end Decimal_Output;
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113
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114 private
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115
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116 MAX_PICSIZE : constant := 50;
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117 MAX_MONEYSIZE : constant := 10;
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118 Invalid_Position : constant := -1;
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119
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120 subtype Pic_Index is Natural range 0 .. MAX_PICSIZE;
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121
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122 type Picture_Record (Length : Pic_Index := 0) is record
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123 Expanded : String (1 .. Length);
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124 end record;
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125
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126 type Format_Record is record
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127 Picture : Picture_Record;
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128 -- Read only
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129
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130 Blank_When_Zero : Boolean;
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131 -- Read/write
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132
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133 Original_BWZ : Boolean;
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134
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135 -- The following components get written
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136
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137 Star_Fill : Boolean := False;
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138
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139 Radix_Position : Integer := Invalid_Position;
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140
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141 Sign_Position,
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142 Second_Sign : Integer := Invalid_Position;
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143
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144 Start_Float,
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145 End_Float : Integer := Invalid_Position;
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146
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147 Start_Currency,
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148 End_Currency : Integer := Invalid_Position;
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149
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150 Max_Leading_Digits : Integer := 0;
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151
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152 Max_Trailing_Digits : Integer := 0;
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153
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154 Max_Currency_Digits : Integer := 0;
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155
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156 Floater : Character := '!';
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157 -- Initialized to illegal value
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158
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159 end record;
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160
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161 type Picture is record
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162 Contents : Format_Record;
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163 end record;
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164
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165 type Number_Attributes is record
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166 Negative : Boolean := False;
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167
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168 Has_Fraction : Boolean := False;
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169
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170 Start_Of_Int,
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171 End_Of_Int,
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172 Start_Of_Fraction,
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173 End_Of_Fraction : Integer := Invalid_Position; -- invalid value
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174 end record;
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175
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176 function Parse_Number_String (Str : String) return Number_Attributes;
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177 -- Assumed format is 'IMAGE or Fixed_IO.Put format (depends on no
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178 -- trailing blanks...)
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179
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180 procedure Precalculate (Pic : in out Format_Record);
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181 -- Precalculates fields from the user supplied data
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182
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183 function Format_Number
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184 (Pic : Format_Record;
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185 Number : String;
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186 Currency_Symbol : String;
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187 Fill_Character : Character;
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188 Separator_Character : Character;
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189 Radix_Point : Character) return String;
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190 -- Formats number according to Pic
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191
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192 function Expand (Picture : String) return String;
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193
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194 end Ada.Text_IO.Editing;
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