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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 . C O M M A N D _ L I N E . R E M O V E --
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6 -- --
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7 -- B o d y --
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8 -- --
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131
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9 -- Copyright (C) 1999-2018, Free Software Foundation, Inc. --
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111
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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17 -- --
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18 -- As a special exception under Section 7 of GPL version 3, you are granted --
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19 -- additional permissions described in the GCC Runtime Library Exception, --
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20 -- version 3.1, as published by the Free Software Foundation. --
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21 -- --
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22 -- You should have received a copy of the GNU General Public License and --
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23 -- a copy of the GCC Runtime Library Exception along with this program; --
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24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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25 -- <http://www.gnu.org/licenses/>. --
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26 -- --
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27 -- GNAT was originally developed by the GNAT team at New York University. --
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28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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29 -- --
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30 ------------------------------------------------------------------------------
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31
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32 package body Ada.Command_Line.Remove is
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33
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34 -----------------------
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35 -- Local Subprograms --
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36 -----------------------
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37
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38 procedure Initialize;
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39 -- Initialize the Remove_Count and Remove_Args variables
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40
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41 ----------------
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42 -- Initialize --
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43 ----------------
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44
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45 procedure Initialize is
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46 begin
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47 if Remove_Args = null then
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48 Remove_Count := Argument_Count;
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49 Remove_Args := new Arg_Nums (1 .. Argument_Count);
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50
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51 for J in Remove_Args'Range loop
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52 Remove_Args (J) := J;
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53 end loop;
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54 end if;
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55 end Initialize;
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56
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57 ---------------------
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58 -- Remove_Argument --
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59 ---------------------
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60
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61 procedure Remove_Argument (Number : Positive) is
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62 begin
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63 Initialize;
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64
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65 if Number > Remove_Count then
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66 raise Constraint_Error;
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67 end if;
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68
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69 Remove_Count := Remove_Count - 1;
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70
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71 for J in Number .. Remove_Count loop
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72 Remove_Args (J) := Remove_Args (J + 1);
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73 end loop;
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74 end Remove_Argument;
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75
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76 procedure Remove_Argument (Argument : String) is
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77 begin
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78 for J in reverse 1 .. Argument_Count loop
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79 if Argument = Ada.Command_Line.Argument (J) then
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80 Remove_Argument (J);
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81 end if;
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82 end loop;
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83 end Remove_Argument;
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84
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85 ----------------------
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86 -- Remove_Arguments --
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87 ----------------------
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88
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89 procedure Remove_Arguments (From : Positive; To : Natural) is
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90 begin
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91 Initialize;
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92
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93 if From > Remove_Count
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94 or else To > Remove_Count
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95 then
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96 raise Constraint_Error;
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97 end if;
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98
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99 if To >= From then
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100 Remove_Count := Remove_Count - (To - From + 1);
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101
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102 for J in From .. Remove_Count loop
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103 Remove_Args (J) := Remove_Args (J + (To - From + 1));
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104 end loop;
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105 end if;
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106 end Remove_Arguments;
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107
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108 procedure Remove_Arguments (Argument_Prefix : String) is
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109 begin
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110 for J in reverse 1 .. Argument_Count loop
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111 declare
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112 Arg : constant String := Argument (J);
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113
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114 begin
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115 if Arg'Length >= Argument_Prefix'Length
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116 and then Arg (1 .. Argument_Prefix'Length) = Argument_Prefix
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117 then
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118 Remove_Argument (J);
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119 end if;
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120 end;
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121 end loop;
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122 end Remove_Arguments;
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123
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124 end Ada.Command_Line.Remove;
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