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annotate scripts/miscellaneous/intwarning.m @ 10133:2e4fc7fdba15

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optimize strfind with 1 or 2 characters
author Jaroslav Hajek <highegg@gmail.com>
date Tue, 19 Jan 2010 13:24:54 +0100
parents 7c211d0091d9
children
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rev   line source
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1 ## Copyright (C) 2008, 2009 David Bateman
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {} intwarning (@var{action})
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21 ## @deftypefnx {Function File} {} intwarning (@var{s})
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22 ## @deftypefnx {Function File} {@var{s} =} intwarning (@dots{})
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23 ## Control the state of the warning for integer conversions and math
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24 ## operations.
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25 ##
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26 ## @table @asis
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27 ## @item "query"
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28 ## With an output argument, return the current state of the integer
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29 ## conversion and math warnings. With no output arguments, print the
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30 ## current state.
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31 ##
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32 ## @c Set example in small font to prevent overfull line
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33 ## @smallexample
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34 ## @group
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35 ## intwarning ("query")
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36 ## The state of warning "Octave:int-convert-nan" is "off"
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37 ## The state of warning "Octave:int-convert-non-int-val" is "off"
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38 ## The state of warning "Octave:int-convert-overflow" is "off"
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39 ## The state of warning "Octave:int-math-overflow" is "off"
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40 ## @end group
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41 ## @end smallexample
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42 ##
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43 ## @item "on"
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44 ## @itemx "off"
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45 ## Turn integer conversion and math warnings on (or off). If there is
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46 ## no output argument, then nothing is printed. Otherwise the original
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47 ## state of the state of the integer conversion and math warnings is
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48 ## returned in a structure array.
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49 ## @end table
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50 ##
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51 ## The original state of the integer warnings can be restored by passing
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52 ## the structure array returned by @code{intwarning} to a later call to
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53 ## @code{intwarning}. For example
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54 ##
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55 ## @example
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56 ## @group
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57 ## s = intwarning ("off");
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58 ## @dots{}
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59 ## intwarning (s);
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60 ## @end group
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61 ## @end example
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62 ## @seealso{warning}
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63 ## @end deftypefn
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64
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65 function y = intwarning (x)
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66
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67 if (nargin != 1)
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68 print_usage ();
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69 else
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70 if (nargout > 0)
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71 y = warning("query", "Octave:int-convert-nan");
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72 y = [y; warning("query", "Octave:int-convert-non-int-val")];
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73 y = [y; warning("query", "Octave:int-convert-overflow")];
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74 y = [y; warning("query", "Octave:int-math-overflow")];
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75 endif
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76 if (ischar (x))
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77 if (strcmpi (x, "query"))
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78 if (nargout == 0)
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79 __print_int_warn_state__ ("Octave:int-convert-nan");
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80 __print_int_warn_state__ ("Octave:int-convert-non-int-val");
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81 __print_int_warn_state__ ("Octave:int-convert-overflow");
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82 __print_int_warn_state__ ("Octave:int-math-overflow");
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83 printf("\n");
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84 endif
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85 elseif (strcmpi (x, "on"))
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86 warning ("on", "Octave:int-convert-nan");
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87 warning ("on", "Octave:int-convert-non-int-val");
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88 warning ("on", "Octave:int-convert-overflow");
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89 warning ("on", "Octave:int-math-overflow");
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90 elseif (strcmpi (x, "off"))
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91 warning ("off", "Octave:int-convert-nan");
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92 warning ("off", "Octave:int-convert-non-int-val");
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93 warning ("off", "Octave:int-convert-overflow");
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94 warning ("off", "Octave:int-math-overflow");
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95 else
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96 error ("intwarning: unrecognized argument");
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97 endif
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98 elseif (isstruct(x))
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99 for fld = fieldnames (x)
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100 if (strcmp ("Octave:int-convert-nan") ||
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101 strcmp ("Octave:int-convert-non-int-val") ||
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102 strcmp ("Octave:int-convert-overflow") ||
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103 strcmp ("Octave:int-cmath-overflow"))
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104 s = getfield (x, fld);
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105 if (! ischar (s) || !(strcmpi("s","on") || strcmpi("s","off")))
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106 error ("intwarning: unexpected warning state");
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107 endif
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108 warning (s, fld);
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109 else
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110 error ("intwarning: unrecognized integer warning %s", fld);
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111 endif
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112 endfor
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113 else
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114 error ("intwarning: unexpected input");
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115 endif
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116 endif
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117 endfunction
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118
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119 function __print_int_warn_state__ (s)
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120 fprintf ("The state of warning \"%s\" is \"%s\"\n",
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121 s, warning ("query", s).state);
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122 endfunction