Mercurial > octave
annotate libinterp/corefcn/strfns.cc @ 22022:278fc29b69ca
maint: Eliminate unnecessary double newline blocks (only whitespace changes).
* Figure.cc, annotation-dialog.cc, dialog.cc, dialog.h, files-dock-widget.cc,
find-files-dialog.cc, find-files-model.cc, file-editor-tab.cc, file-editor.cc,
find-dialog.cc, octave-qscintilla.cc, octave-txt-lexer.cc, main-window.cc,
main-window.h, octave-cmd.cc, octave-cmd.h, octave-dock-widget.cc,
octave-qt-link.cc, parser.h, webinfo.cc, settings-dialog.cc,
shortcut-manager.cc, shortcut-manager.h, welcome-wizard.cc, workspace-model.cc,
__ilu__.cc, __lin_interpn__.cc, besselj.cc, bsxfun.cc, cellfun.cc, conv2.cc,
data.cc, debug.cc, debug.h, dynamic-ld.cc, fft2.cc, file-io.cc,
ft-text-renderer.cc, gl-render.cc, gl2ps-print.cc, graphics.cc, graphics.in.h,
help.cc, jit-typeinfo.cc, jit-typeinfo.h, kron.cc, ls-ascii-helper.cc,
ls-hdf5.cc, ls-hdf5.h, ls-mat5.cc, max.cc, oct-map.cc, oct-map.h,
oct-stream.cc, octave-link.h, pr-output.cc, pt-jit.cc, qz.cc, sparse-xdiv.cc,
sparse-xpow.cc, strfind.cc, strfns.cc, symtab.h, toplev.cc, toplev.h,
typecast.cc, utils.cc, variables.cc, xdiv.h, xpow.cc, xpow.h, zfstream.cc,
__eigs__.cc, __init_fltk__.cc, audioread.cc, ccolamd.cc, chol.cc, qr.cc,
ov-base-diag.cc, ov-base-int.cc, ov-base-sparse.cc, ov-base.cc, ov-base.h,
ov-bool-mat.cc, ov-bool-mat.h, ov-bool-sparse.cc, ov-bool-sparse.h, ov-bool.cc,
ov-bool.h, ov-builtin.h, ov-cell.cc, ov-cell.h, ov-class.cc, ov-class.h,
ov-classdef.cc, ov-complex.cc, ov-complex.h, ov-cs-list.cc, ov-cs-list.h,
ov-cx-diag.cc, ov-cx-diag.h, ov-cx-mat.cc, ov-cx-mat.h, ov-cx-sparse.cc,
ov-cx-sparse.h, ov-dld-fcn.cc, ov-dld-fcn.h, ov-fcn-handle.h, ov-fcn-inline.h,
ov-float.cc, ov-float.h, ov-flt-complex.cc, ov-flt-complex.h,
ov-flt-cx-diag.cc, ov-flt-cx-diag.h, ov-flt-cx-mat.cc, ov-flt-cx-mat.h,
ov-flt-re-diag.cc, ov-flt-re-diag.h, ov-flt-re-mat.cc, ov-int16.cc,
ov-int32.cc, ov-int64.cc, ov-int8.cc, ov-intx.h, ov-lazy-idx.cc, ov-lazy-idx.h,
ov-mex-fcn.h, ov-null-mat.h, ov-perm.cc, ov-perm.h, ov-range.cc, ov-range.h,
ov-re-diag.cc, ov-re-diag.h, ov-re-mat.cc, ov-re-sparse.cc, ov-re-sparse.h,
ov-scalar.cc, ov-scalar.h, ov-str-mat.h, ov-struct.cc, ov-struct.h,
ov-type-conv.h, ov-uint16.cc, ov-uint32.cc, ov-uint64.cc, ov-uint8.cc,
ov-usr-fcn.cc, ov-usr-fcn.h, ov.h, op-cm-m.cc, op-fcm-fm.cc, op-fm-fm.cc,
op-int.h, op-m-m.cc, op-pm-template.cc, pt-binop.h, pt-select.cc, pt-stmt.cc,
pt-unop.h, Array-util.cc, Array.cc, Array.h, CColVector.cc, CMatrix.cc,
CMatrix.h, CSparse.cc, MArray.cc, MSparse.cc, MatrixType.cc, PermMatrix.cc,
Range.cc, Sparse-C.cc, Sparse.cc, dMatrix.cc, dim-vector.h, fCColVector.cc,
fCMatrix.cc, fMatrix.cc, fMatrix.h, idx-vector.cc, idx-vector.h, blaswrap.c,
f77-fcn.h, DASPK.cc, eigs-base.cc, hess.cc, lo-specfun.cc, oct-fftw.cc,
oct-norm.cc, oct-rand.cc, oct-rand.h, qr.cc, qrp.cc, randmtzig.cc,
randpoisson.cc, sparse-lu.cc, sparse-lu.h, sparse-qr.cc, Sparse-op-defs.h,
mx-inlines.cc, oct-env.h, cmd-edit.cc, f2c-main.c, lo-array-errwarn.cc,
lo-array-errwarn.h, lo-array-gripes.cc, lo-array-gripes.h, lo-ieee.h,
lo-regexp.cc, oct-binmap.h, oct-inttypes.cc, oct-inttypes.h, oct-sort.cc,
oct-sort.h, mkoctfile.in.cc:
maint: Eliminate unnecessary double newline blocks (only whitespace changes).
author | Rik <rik@octave.org> |
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date | Fri, 01 Jul 2016 19:48:35 -0700 |
parents | 112b20240c87 |
children | 26109cce022e |
rev | line source |
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807 | 1 /* |
2 | |
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3 Copyright (C) 1994-2015 John W. Eaton |
807 | 4 |
5 This file is part of Octave. | |
6 | |
7 Octave is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published by the | |
7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
10 option) any later version. | |
807 | 11 |
12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
7016 | 18 along with Octave; see the file COPYING. If not, see |
19 <http://www.gnu.org/licenses/>. | |
807 | 20 |
21 */ | |
22 | |
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23 #if defined (HAVE_CONFIG_H) |
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24 # include "config.h" |
807 | 25 #endif |
26 | |
1355 | 27 #include <cctype> |
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28 |
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29 #include <queue> |
5765 | 30 #include <sstream> |
807 | 31 |
32 #include "dMatrix.h" | |
33 | |
5416 | 34 #include "Cell.h" |
1355 | 35 #include "defun.h" |
807 | 36 #include "error.h" |
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37 #include "errwarn.h" |
2366 | 38 #include "ov.h" |
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39 #include "ovl.h" |
4457 | 40 #include "unwind-prot.h" |
807 | 41 #include "utils.h" |
42 | |
4358 | 43 DEFUN (char, args, , |
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44 doc: /* -*- texinfo -*- |
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45 @deftypefn {} {} char (@var{x}) |
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46 @deftypefnx {} {} char (@var{x}, @dots{}) |
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47 @deftypefnx {} {} char (@var{s1}, @var{s2}, @dots{}) |
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48 @deftypefnx {} {} char (@var{cell_array}) |
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49 Create a string array from one or more numeric matrices, character |
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50 matrices, or cell arrays. |
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51 |
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52 Arguments are concatenated vertically. The returned values are padded with |
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53 blanks as needed to make each row of the string array have the same length. |
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54 Empty input strings are significant and will concatenated in the output. |
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55 |
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56 For numerical input, each element is converted to the corresponding ASCII |
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57 character. A range error results if an input is outside the ASCII range |
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58 (0-255). |
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59 |
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60 For cell arrays, each element is concatenated separately. Cell arrays |
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61 converted through @code{char} can mostly be converted back with |
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62 @code{cellstr}. For example: |
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63 |
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64 @example |
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65 @group |
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66 char ([97, 98, 99], "", @{"98", "99", 100@}, "str1", ["ha", "lf"]) |
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67 @result{} ["abc " |
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68 " " |
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69 "98 " |
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70 "99 " |
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71 "d " |
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72 "str1 " |
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73 "half "] |
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74 @end group |
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75 @end example |
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76 @seealso{strvcat, cellstr} |
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77 @end deftypefn */) |
4358 | 78 { |
79 octave_value retval; | |
80 | |
81 int nargin = args.length (); | |
82 | |
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83 if (nargin == 0) |
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84 retval = ""; |
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85 else if (nargin == 1) |
5281 | 86 retval = args(0).convert_to_str (true, true, |
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87 args(0).is_dq_string () ? '"' : '\''); |
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88 else |
4358 | 89 { |
90 int n_elts = 0; | |
91 | |
92 int max_len = 0; | |
93 | |
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94 std::queue<string_vector> args_as_strings; |
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95 |
4358 | 96 for (int i = 0; i < nargin; i++) |
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97 { |
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98 string_vector s = args(i).xstring_vector_value ("char: unable to convert some args to strings"); |
4358 | 99 |
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100 if (s.numel () > 0) |
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101 n_elts += s.numel (); |
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102 else |
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103 n_elts += 1; |
4358 | 104 |
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105 int s_max_len = s.max_length (); |
4358 | 106 |
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107 if (s_max_len > max_len) |
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108 max_len = s_max_len; |
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109 |
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110 args_as_strings.push (s); |
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111 } |
4358 | 112 |
113 string_vector result (n_elts); | |
114 | |
115 int k = 0; | |
116 | |
117 for (int i = 0; i < nargin; i++) | |
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118 { |
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119 string_vector s = args_as_strings.front (); |
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120 args_as_strings.pop (); |
4358 | 121 |
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122 int n = s.numel (); |
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124 if (n > 0) |
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125 { |
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126 for (int j = 0; j < n; j++) |
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127 { |
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128 std::string t = s[j]; |
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129 int t_len = t.length (); |
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131 if (max_len > t_len) |
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132 t += std::string (max_len - t_len, ' '); |
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134 result[k++] = t; |
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135 } |
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136 } |
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137 else |
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138 result[k++] = std::string (max_len, ' '); |
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139 } |
4358 | 140 |
5280 | 141 retval = octave_value (result, '\''); |
4358 | 142 } |
143 | |
144 return retval; | |
145 } | |
146 | |
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147 /* |
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148 %!assert (char (), '') |
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149 %!assert (char (100), "d") |
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150 %!assert (char (100,100), ["d";"d"]) |
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151 %!assert (char ({100,100}), ["d";"d"]) |
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152 %!assert (char ([100,100]), ["dd"]) |
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153 %!assert (char ({100,{100}}), ["d";"d"]) |
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154 %!assert (char (100, [], 100), ["d";" ";"d"]) |
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155 %!assert (char ({100, [], 100}), ["d";" ";"d"]) |
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156 %!assert (char ({100,{100, {""}}}), ["d";"d";" "]) |
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157 %!assert (char (["a";"be"], {"c", 100}), ["a";"be";"c";"d"]) |
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158 %!assert (char ("a", "bb", "ccc"), ["a "; "bb "; "ccc"]) |
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159 %!assert (char ([65, 83, 67, 73, 73]), "ASCII") |
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160 |
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161 %!test |
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162 %! x = char ("foo", "bar", "foobar"); |
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163 %! assert (x(1,:), "foo "); |
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164 %! assert (x(2,:), "bar "); |
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165 %! assert (x(3,:), "foobar"); |
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166 */ |
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167 |
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168 DEFUN (strvcat, args, , |
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169 doc: /* -*- texinfo -*- |
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170 @deftypefn {} {} strvcat (@var{x}) |
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171 @deftypefnx {} {} strvcat (@var{x}, @dots{}) |
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172 @deftypefnx {} {} strvcat (@var{s1}, @var{s2}, @dots{}) |
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173 @deftypefnx {} {} strvcat (@var{cell_array}) |
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174 Create a character array from one or more numeric matrices, character |
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175 matrices, or cell arrays. |
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176 |
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177 Arguments are concatenated vertically. The returned values are padded with |
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178 blanks as needed to make each row of the string array have the same length. |
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179 Unlike @code{char}, empty strings are removed and will not appear in the |
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180 output. |
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181 |
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182 For numerical input, each element is converted to the corresponding ASCII |
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183 character. A range error results if an input is outside the ASCII range |
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184 (0-255). |
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185 |
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186 For cell arrays, each element is concatenated separately. Cell arrays |
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187 converted through @code{strvcat} can mostly be converted back with |
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188 @code{cellstr}. For example: |
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189 |
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190 @example |
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191 @group |
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192 strvcat ([97, 98, 99], "", @{"98", "99", 100@}, "str1", ["ha", "lf"]) |
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193 @result{} ["abc " |
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194 "98 " |
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195 "99 " |
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196 "d " |
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197 "str1 " |
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198 "half "] |
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199 @end group |
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200 @end example |
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201 @seealso{char, strcat, cstrcat} |
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202 @end deftypefn */) |
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203 { |
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204 int nargin = args.length (); |
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205 int n_elts = 0; |
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206 size_t max_len = 0; |
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207 std::queue<string_vector> args_as_strings; |
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208 |
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209 for (int i = 0; i < nargin; i++) |
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210 { |
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211 string_vector s = args(i).xstring_vector_value ("strvcat: unable to convert some args to strings"); |
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212 |
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213 size_t n = s.numel (); |
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214 |
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215 // do not count empty strings in calculation of number of elements |
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216 if (n > 0) |
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217 { |
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218 for (size_t j = 0; j < n; j++) |
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219 { |
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220 if (s[j].length () > 0) |
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221 n_elts++; |
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222 } |
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223 } |
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224 |
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225 size_t s_max_len = s.max_length (); |
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226 |
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227 if (s_max_len > max_len) |
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228 max_len = s_max_len; |
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229 |
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230 args_as_strings.push (s); |
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231 } |
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232 |
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233 string_vector result (n_elts); |
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234 |
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235 octave_idx_type k = 0; |
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236 |
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237 for (int i = 0; i < nargin; i++) |
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238 { |
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239 string_vector s = args_as_strings.front (); |
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240 args_as_strings.pop (); |
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241 |
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242 size_t n = s.numel (); |
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243 |
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244 if (n > 0) |
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245 { |
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246 for (size_t j = 0; j < n; j++) |
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247 { |
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248 std::string t = s[j]; |
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249 if (t.length () > 0) |
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250 { |
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251 size_t t_len = t.length (); |
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252 |
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253 if (max_len > t_len) |
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254 t += std::string (max_len - t_len, ' '); |
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255 |
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256 result[k++] = t; |
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257 } |
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258 } |
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259 } |
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260 } |
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261 |
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262 // Cannot use ovl. Relies on overloaded octave_value call. |
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263 return octave_value (result, '\''); |
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264 } |
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265 |
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266 /* |
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267 %!assert (strvcat (""), "") |
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268 %!assert (strvcat (100) == "d") |
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269 %!assert (strvcat (100,100), ["d";"d"]) |
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270 %!assert (strvcat ({100,100}), ["d";"d"]) |
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271 %!assert (strvcat ([100,100]), ["dd"]) |
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272 %!assert (strvcat ({100,{100}}), ["d";"d"]) |
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273 %!assert (strvcat (100, [], 100), ["d";"d"]) |
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274 %!assert (strvcat ({100, [], 100}), ["d";"d"]) |
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275 %!assert (strvcat ({100,{100, {""}}}), ["d";"d"]) |
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276 %!assert (strvcat (["a";"be"], {"c", 100}), ["a";"be";"c";"d"]) |
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277 %!assert (strvcat ("a", "bb", "ccc"), ["a "; "bb "; "ccc"]) |
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278 %!assert (strvcat (), "") |
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279 */ |
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280 |
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282 doc: /* -*- texinfo -*- |
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283 @deftypefn {} {} ischar (@var{x}) |
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284 Return true if @var{x} is a character array. |
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285 @seealso{isfloat, isinteger, islogical, isnumeric, iscellstr, isa} |
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286 @end deftypefn */) |
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288 if (args.length () != 1) |
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291 return ovl (args(0).is_string ()); |
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293 | |
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294 /* |
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295 %!assert (ischar ("a"), true) |
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296 %!assert (ischar (["ab";"cd"]), true) |
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297 %!assert (ischar ({"ab"}), false) |
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298 %!assert (ischar (1), false) |
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299 %!assert (ischar ([1, 2]), false) |
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300 %!assert (ischar ([]), false) |
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301 %!assert (ischar ([1, 2; 3, 4]), false) |
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302 %!assert (ischar (""), true) |
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303 %!assert (ischar ("test"), true) |
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304 %!assert (ischar (["test"; "ing"]), true) |
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305 %!assert (ischar (struct ("foo", "bar")), false) |
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306 |
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307 %!error ischar () |
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308 %!error ischar ("test", 1) |
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309 */ |
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310 |
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311 static octave_value |
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312 do_strcmp_fun (const octave_value& arg0, const octave_value& arg1, |
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313 octave_idx_type n, const char *fcn_name, |
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314 bool (*array_op) (const charNDArray&, const charNDArray&, |
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315 octave_idx_type), |
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316 bool (*str_op) (const std::string&, const std::string&, |
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317 octave_idx_type)) |
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318 |
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319 { |
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320 octave_value retval; |
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321 |
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322 bool s1_string = arg0.is_string (); |
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323 bool s1_cell = arg0.is_cell (); |
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324 bool s2_string = arg1.is_string (); |
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325 bool s2_cell = arg1.is_cell (); |
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326 |
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327 if (s1_string && s2_string) |
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328 retval = array_op (arg0.char_array_value (), arg1.char_array_value (), n); |
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329 else if ((s1_string && s2_cell) || (s1_cell && s2_string)) |
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330 { |
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331 octave_value str_val, cell_val; |
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332 |
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333 if (s1_string) |
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334 { |
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335 str_val = arg0; |
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336 cell_val = arg1; |
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337 } |
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338 else |
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339 { |
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340 str_val = arg1; |
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341 cell_val = arg0; |
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342 } |
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343 |
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344 const Cell cell = cell_val.cell_value (); |
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345 const string_vector str = str_val.string_vector_value (); |
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346 octave_idx_type r = str.numel (); |
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347 |
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348 if (r == 0 || r == 1) |
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349 { |
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350 // Broadcast the string. |
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351 |
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352 boolNDArray output (cell_val.dims (), false); |
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353 |
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354 std::string s = r == 0 ? "" : str[0]; |
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355 |
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356 if (cell_val.is_cellstr ()) |
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357 { |
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358 const Array<std::string> cellstr = cell_val.cellstr_value (); |
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359 for (octave_idx_type i = 0; i < cellstr.numel (); i++) |
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360 output(i) = str_op (cellstr(i), s, n); |
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361 } |
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362 else |
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363 { |
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364 // FIXME: should we warn here? |
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365 for (octave_idx_type i = 0; i < cell.numel (); i++) |
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366 { |
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367 if (cell(i).is_string ()) |
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368 output(i) = str_op (cell(i).string_value (), s, n); |
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369 } |
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370 } |
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371 |
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372 retval = output; |
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373 } |
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374 else if (r > 1) |
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375 { |
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376 if (cell.numel () == 1) |
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377 { |
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378 // Broadcast the cell. |
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379 |
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380 const dim_vector dv (r, 1); |
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381 boolNDArray output (dv, false); |
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382 |
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383 if (cell(0).is_string ()) |
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384 { |
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385 const std::string str2 = cell(0).string_value (); |
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386 |
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387 for (octave_idx_type i = 0; i < r; i++) |
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388 output(i) = str_op (str[i], str2, n); |
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389 } |
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390 |
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391 retval = output; |
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392 } |
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393 else |
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394 { |
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395 // Must match in all dimensions. |
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396 |
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|
397 boolNDArray output (cell.dims (), false); |
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398 |
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Deprecate Array::length() and Sparse::length() in favour of ::numel().
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|
399 if (cell.numel () == r) |
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400 { |
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401 if (cell_val.is_cellstr ()) |
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402 { |
17787
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diff
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|
403 const Array<std::string> cellstr |
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404 = cell_val.cellstr_value (); |
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Deprecate Array::length() and Sparse::length() in favour of ::numel().
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405 for (octave_idx_type i = 0; i < cellstr.numel (); i++) |
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406 output(i) = str_op (str[i], cellstr(i), n); |
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407 } |
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408 else |
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409 { |
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410 // FIXME: should we warn here? |
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411 for (octave_idx_type i = 0; i < r; i++) |
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412 { |
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413 if (cell(i).is_string ()) |
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414 output(i) = str_op (str[i], |
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|
415 cell(i).string_value (), n); |
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416 } |
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417 } |
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418 |
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419 retval = output; |
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420 } |
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diff
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421 else |
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422 retval = false; |
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423 } |
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424 } |
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425 } |
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426 else if (s1_cell && s2_cell) |
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|
427 { |
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|
428 octave_value cell1_val, cell2_val; |
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429 octave_idx_type r1 = arg0.numel (), r2; |
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|
430 |
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431 if (r1 == 1) |
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432 { |
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433 // Make the singleton cell2. |
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|
434 |
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435 cell1_val = arg1; |
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436 cell2_val = arg0; |
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437 } |
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438 else |
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|
439 { |
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|
440 cell1_val = arg0; |
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|
441 cell2_val = arg1; |
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442 } |
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|
443 |
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|
444 const Cell cell1 = cell1_val.cell_value (); |
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|
445 const Cell cell2 = cell2_val.cell_value (); |
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|
446 r1 = cell1.numel (); |
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|
447 r2 = cell2.numel (); |
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|
448 |
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449 const dim_vector size1 = cell1.dims (); |
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|
450 const dim_vector size2 = cell2.dims (); |
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|
451 |
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|
452 boolNDArray output (size1, false); |
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changeset
|
453 |
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|
454 if (r2 == 1) |
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|
455 { |
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diff
changeset
|
456 // Broadcast cell2. |
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diff
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|
457 |
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diff
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|
458 if (cell2(0).is_string ()) |
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|
459 { |
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diff
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|
460 const std::string str2 = cell2(0).string_value (); |
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diff
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|
461 |
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|
462 if (cell1_val.is_cellstr ()) |
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diff
changeset
|
463 { |
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|
464 const Array<std::string> cellstr = cell1_val.cellstr_value (); |
20232
a9574e3c6e9e
Deprecate Array::length() and Sparse::length() in favour of ::numel().
Carnë Draug <carandraug@octave.org>
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diff
changeset
|
465 for (octave_idx_type i = 0; i < cellstr.numel (); i++) |
10108
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diff
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|
466 output(i) = str_op (cellstr(i), str2, n); |
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|
467 } |
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|
468 else |
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diff
changeset
|
469 { |
06e11df4592d
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diff
changeset
|
470 // FIXME: should we warn here? |
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diff
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|
471 for (octave_idx_type i = 0; i < r1; i++) |
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implement built-in strcmpi/strncmpi, reduce some code duplication
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diff
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|
472 { |
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|
473 if (cell1(i).is_string ()) |
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|
474 { |
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|
475 const std::string str1 = cell1(i).string_value (); |
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|
476 output(i) = str_op (str1, str2, n); |
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diff
changeset
|
477 } |
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implement built-in strcmpi/strncmpi, reduce some code duplication
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diff
changeset
|
478 } |
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diff
changeset
|
479 } |
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diff
changeset
|
480 } |
06e11df4592d
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diff
changeset
|
481 } |
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diff
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|
482 else |
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|
483 { |
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diff
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|
484 if (size1 != size2) |
20831
35241c4b696c
eliminate return statements after calls to error
John W. Eaton <jwe@octave.org>
parents:
20804
diff
changeset
|
485 error ("%s: nonconformant cell arrays", fcn_name); |
10108
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486 |
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487 if (cell1.is_cellstr () && cell2.is_cellstr ()) |
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488 { |
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489 const Array<std::string> cellstr1 = cell1_val.cellstr_value (); |
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490 const Array<std::string> cellstr2 = cell2_val.cellstr_value (); |
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491 for (octave_idx_type i = 0; i < r1; i++) |
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492 output (i) = str_op (cellstr1(i), cellstr2(i), n); |
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493 } |
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494 else |
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495 { |
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496 // FIXME: should we warn here? |
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497 for (octave_idx_type i = 0; i < r1; i++) |
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498 { |
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499 if (cell1(i).is_string () && cell2(i).is_string ()) |
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500 { |
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501 const std::string str1 = cell1(i).string_value (); |
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502 const std::string str2 = cell2(i).string_value (); |
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503 output(i) = str_op (str1, str2, n); |
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504 } |
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505 } |
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506 } |
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507 } |
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508 |
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509 retval = output; |
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510 } |
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511 else |
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512 retval = false; |
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513 |
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514 return retval; |
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515 } |
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516 |
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517 // If both args are arrays, dimensions may be significant. |
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518 static bool |
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519 strcmp_array_op (const charNDArray& s1, const charNDArray& s2, octave_idx_type) |
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520 { |
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521 return (s1.dims () == s2.dims () |
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522 && std::equal (s1.data (), s1.data () + s1.numel (), s2.data ())); |
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523 } |
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524 |
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525 // Otherwise, just use strings. |
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526 static bool |
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527 strcmp_str_op (const std::string& s1, const std::string& s2, |
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528 octave_idx_type) |
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529 { |
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530 return s1 == s2; |
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531 } |
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532 |
5415 | 533 DEFUN (strcmp, args, , |
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534 doc: /* -*- texinfo -*- |
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535 @deftypefn {} {} strcmp (@var{s1}, @var{s2}) |
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536 Return 1 if the character strings @var{s1} and @var{s2} are the same, |
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537 and 0 otherwise. |
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538 |
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539 If either @var{s1} or @var{s2} is a cell array of strings, then an array |
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540 of the same size is returned, containing the values described above for |
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541 every member of the cell array. The other argument may also be a cell |
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542 array of strings (of the same size or with only one element), char matrix |
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543 or character string. |
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544 |
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545 @strong{Caution:} For compatibility with @sc{matlab}, Octave's strcmp |
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546 function returns 1 if the character strings are equal, and 0 otherwise. |
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547 This is just the opposite of the corresponding C library function. |
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548 @seealso{strcmpi, strncmp, strncmpi} |
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549 @end deftypefn */) |
5415 | 550 { |
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551 if (args.length () != 2) |
5823 | 552 print_usage (); |
5415 | 553 |
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554 return ovl (do_strcmp_fun (args(0), args(1), 0, "strcmp", |
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555 strcmp_array_op, strcmp_str_op)); |
5415 | 556 } |
557 | |
5862 | 558 /* |
559 %!shared x | |
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560 %! x = char (zeros (0, 2)); |
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561 %!assert (strcmp ("", x), false) |
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562 %!assert (strcmp (x, ""), false) |
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563 %!assert (strcmp (x, x), true) |
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564 ## %!assert (strcmp ({""}, x), true) |
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565 ## %!assert (strcmp ({x}, ""), false) |
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566 ## %!assert (strcmp ({x}, x), true) |
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567 ## %!assert (strcmp ("", {x}), false) |
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568 ## %!assert (strcmp (x, {""}), false) |
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569 ## %!assert (strcmp (x, {x}), true) |
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570 ## %!assert (strcmp ({x; x}, ""), [false; false]) |
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571 ## %!assert (strcmp ({x; x}, {""}), [false; false]) |
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572 ## %!assert (strcmp ("", {x; x}), [false; false]) |
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573 ## %!assert (strcmp ({""}, {x; x}), [false; false]) |
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574 %!assert (strcmp ({"foo"}, x), false) |
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575 %!assert (strcmp ({"foo"}, "foo"), true) |
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576 %!assert (strcmp ({"foo"}, x), false) |
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577 %!assert (strcmp (x, {"foo"}), false) |
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578 %!assert (strcmp ("foo", {"foo"}), true) |
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579 %!assert (strcmp (x, {"foo"}), false) |
5862 | 580 %!shared y |
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581 %! y = char (zeros (2, 0)); |
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582 %!assert (strcmp ("", y), false) |
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583 %!assert (strcmp (y, ""), false) |
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584 %!assert (strcmp (y, y), true) |
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585 %!assert (strcmp ({""}, y), [true; true]) |
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586 %!assert (strcmp ({y}, ""), true) |
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587 %!assert (strcmp ({y}, y), [true; true]) |
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588 %!assert (strcmp ("", {y}), true) |
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589 %!assert (strcmp (y, {""}), [true; true]) |
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590 %!assert (strcmp (y, {y}), [true; true]) |
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591 %!assert (strcmp ({y; y}, ""), [true; true]) |
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592 %!assert (strcmp ({y; y}, {""}), [true; true]) |
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593 %!assert (strcmp ("", {y; y}), [true; true]) |
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594 %!assert (strcmp ({""}, {y; y}), [true; true]) |
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595 %!assert (strcmp ({"foo"}, y), [false; false]) |
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596 %!assert (strcmp ({"foo"}, y), [false; false]) |
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597 %!assert (strcmp (y, {"foo"}), [false; false]) |
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598 %!assert (strcmp (y, {"foo"}), [false; false]) |
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599 %!assert (strcmp ("foobar", "foobar"), true) |
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600 %!assert (strcmp ("fooba", "foobar"), false) |
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601 |
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602 %!error strcmp () |
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603 %!error strcmp ("foo", "bar", 3) |
5862 | 604 */ |
605 | |
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606 // Apparently, Matlab ignores the dims with strncmp. |
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607 static bool |
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608 strncmp_array_op (const charNDArray& s1, const charNDArray& s2, |
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609 octave_idx_type n) |
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610 { |
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611 octave_idx_type l1 = s1.numel (); |
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612 octave_idx_type l2 = s2.numel (); |
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613 return (n > 0 && n <= l1 && n <= l2 |
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614 && std::equal (s1.data (), s1.data () + n, s2.data ())); |
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615 } |
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616 |
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617 // Otherwise, just use strings. Note that we neither extract substrings (which |
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618 // would mean a copy, at least in GCC), nor use string::compare (which is a |
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619 // 3-way compare). |
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620 static bool |
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621 strncmp_str_op (const std::string& s1, const std::string& s2, octave_idx_type n) |
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622 { |
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623 octave_idx_type l1 = s1.length (); |
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624 octave_idx_type l2 = s2.length (); |
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625 return (n > 0 && n <= l1 && n <= l2 |
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626 && std::equal (s1.data (), s1.data () + n, s2.data ())); |
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627 } |
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628 |
6250 | 629 DEFUN (strncmp, args, , |
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630 doc: /* -*- texinfo -*- |
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631 @deftypefn {} {} strncmp (@var{s1}, @var{s2}, @var{n}) |
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632 Return 1 if the first @var{n} characters of strings @var{s1} and @var{s2} |
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633 are the same, and 0 otherwise. |
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634 |
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635 @example |
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636 @group |
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637 strncmp ("abce", "abcd", 3) |
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638 @result{} 1 |
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639 @end group |
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640 @end example |
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641 |
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642 If either @var{s1} or @var{s2} is a cell array of strings, then an array |
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643 of the same size is returned, containing the values described above for |
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644 every member of the cell array. The other argument may also be a cell |
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645 array of strings (of the same size or with only one element), char matrix |
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646 or character string. |
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647 |
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648 @example |
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649 @group |
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650 strncmp ("abce", @{"abcd", "bca", "abc"@}, 3) |
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651 @result{} [1, 0, 1] |
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652 @end group |
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653 @end example |
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654 |
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655 @strong{Caution:} For compatibility with @sc{matlab}, Octave's strncmp |
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656 function returns 1 if the character strings are equal, and 0 otherwise. |
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657 This is just the opposite of the corresponding C library function. |
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658 @seealso{strncmpi, strcmp, strcmpi} |
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659 @end deftypefn */) |
6250 | 660 { |
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661 if (args.length () != 3) |
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662 print_usage (); |
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663 |
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664 octave_idx_type n = args(2).idx_type_value (); |
6250 | 665 |
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666 if (n > 0) |
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667 return ovl (do_strcmp_fun (args(0), args(1), n, "strncmp", |
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668 strncmp_array_op, strncmp_str_op)); |
6250 | 669 else |
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670 error ("strncmp: N must be greater than 0"); |
6250 | 671 } |
672 | |
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673 /* |
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674 %!assert (strncmp ("abce", "abc", 3), true) |
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675 %!assert (strncmp (100, 100, 1), false) |
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676 %!assert (strncmp ("abce", {"abcd", "bca", "abc"}, 3), logical ([1, 0, 1])) |
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677 %!assert (strncmp ("abc", {"abcd", "bca", "abc"}, 4), logical ([0, 0, 0])) |
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678 %!assert (strncmp ({"abcd", "bca", "abc"},"abce", 3), logical ([1, 0, 1])) |
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679 %!assert (strncmp ({"abcd", "bca", "abc"},{"abcd", "bca", "abe"}, 3), logical ([1, 1, 0])) |
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680 %!assert (strncmp ("abc", {"abcd", 10}, 2), logical ([1, 0])) |
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681 |
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682 %!error strncmp () |
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683 %!error strncmp ("abc", "def") |
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684 */ |
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685 |
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686 // case-insensitive character equality functor |
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687 struct icmp_char_eq : public std::binary_function<char, char, bool> |
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688 { |
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689 bool operator () (char x, char y) const |
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690 { |
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691 return std::toupper (x) == std::toupper (y); |
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692 } |
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693 }; |
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694 |
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695 // strcmpi is equivalent to strcmp in that it checks all dims. |
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696 static bool |
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697 strcmpi_array_op (const charNDArray& s1, const charNDArray& s2, octave_idx_type) |
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698 { |
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699 return (s1.dims () == s2.dims () |
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700 && std::equal (s1.data (), s1.data () + s1.numel (), s2.data (), |
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701 icmp_char_eq ())); |
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702 } |
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703 |
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704 // Ditto for string. |
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705 static bool |
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706 strcmpi_str_op (const std::string& s1, const std::string& s2, |
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707 octave_idx_type) |
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708 { |
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709 return (s1.size () == s2.size () |
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710 && std::equal (s1.data (), s1.data () + s1.size (), s2.data (), |
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711 icmp_char_eq ())); |
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712 } |
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713 |
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714 DEFUNX ("strcmpi", Fstrcmpi, args, , |
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715 doc: /* -*- texinfo -*- |
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move docstrings in C++ files out of C strings and into comments
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716 @deftypefn {} {} strcmpi (@var{s1}, @var{s2}) |
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717 Return 1 if the character strings @var{s1} and @var{s2} are the same, |
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718 disregarding case of alphabetic characters, and 0 otherwise. |
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|
719 |
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|
720 If either @var{s1} or @var{s2} is a cell array of strings, then an array |
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|
721 of the same size is returned, containing the values described above for |
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|
722 every member of the cell array. The other argument may also be a cell |
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723 array of strings (of the same size or with only one element), char matrix |
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|
724 or character string. |
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changeset
|
725 |
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|
726 @strong{Caution:} For compatibility with @sc{matlab}, Octave's strcmp |
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727 function returns 1 if the character strings are equal, and 0 otherwise. |
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728 This is just the opposite of the corresponding C library function. |
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|
729 |
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|
730 @strong{Caution:} National alphabets are not supported. |
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731 @seealso{strcmp, strncmp, strncmpi} |
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732 @end deftypefn */) |
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733 { |
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|
734 if (args.length () != 2) |
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735 print_usage (); |
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736 |
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|
737 return ovl (do_strcmp_fun (args(0), args(1), 0, "strcmpi", |
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738 strcmpi_array_op, strcmpi_str_op)); |
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739 } |
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|
740 |
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741 /* |
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742 %!assert (strcmpi ("abc123", "ABC123"), true) |
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743 */ |
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744 |
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745 // Like strncmp. |
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|
746 static bool |
17787
175b392e91fe
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changeset
|
747 strncmpi_array_op (const charNDArray& s1, const charNDArray& s2, |
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Use GNU style coding conventions for code in libinterp/
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748 octave_idx_type n) |
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|
749 { |
18100
6a71e5030df5
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|
750 octave_idx_type l1 = s1.numel (); |
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751 octave_idx_type l2 = s2.numel (); |
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|
752 return (n > 0 && n <= l1 && n <= l2 |
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753 && std::equal (s1.data (), s1.data () + n, s2.data (), |
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|
754 icmp_char_eq ())); |
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755 } |
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|
756 |
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|
757 // Ditto. |
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|
758 static bool |
17787
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|
759 strncmpi_str_op (const std::string& s1, const std::string& s2, |
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|
760 octave_idx_type n) |
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761 { |
18100
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|
762 octave_idx_type l1 = s1.length (); |
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|
763 octave_idx_type l2 = s2.length (); |
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|
764 return (n > 0 && n <= l1 && n <= l2 |
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765 && std::equal (s1.data (), s1.data () + n, s2.data (), |
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|
766 icmp_char_eq ())); |
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767 } |
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|
768 |
10318
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fix incorrect strncmpi change
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changeset
|
769 DEFUNX ("strncmpi", Fstrncmpi, args, , |
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770 doc: /* -*- texinfo -*- |
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771 @deftypefn {} {} strncmpi (@var{s1}, @var{s2}, @var{n}) |
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772 Return 1 if the first @var{n} character of @var{s1} and @var{s2} are the |
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773 same, disregarding case of alphabetic characters, and 0 otherwise. |
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|
774 |
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775 If either @var{s1} or @var{s2} is a cell array of strings, then an array |
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|
776 of the same size is returned, containing the values described above for |
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777 every member of the cell array. The other argument may also be a cell |
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|
778 array of strings (of the same size or with only one element), char matrix |
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|
779 or character string. |
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|
780 |
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|
781 @strong{Caution:} For compatibility with @sc{matlab}, Octave's strncmpi |
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782 function returns 1 if the character strings are equal, and 0 otherwise. |
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783 This is just the opposite of the corresponding C library function. |
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|
784 |
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|
785 @strong{Caution:} National alphabets are not supported. |
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786 @seealso{strncmp, strcmp, strcmpi} |
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787 @end deftypefn */) |
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|
788 { |
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|
789 if (args.length () != 3) |
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|
790 print_usage (); |
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|
791 |
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|
792 octave_idx_type n = args(2).idx_type_value (); |
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|
793 |
20804
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|
794 if (n > 0) |
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|
795 return ovl (do_strcmp_fun (args(0), args(1), n, "strncmpi", |
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796 strncmpi_array_op, strncmpi_str_op)); |
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|
797 else |
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|
798 error ("strncmpi: N must be greater than 0"); |
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799 } |
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|
800 |
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|
801 /* |
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|
802 %!assert (strncmpi ("abc123", "ABC456", 3), true) |
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803 */ |
8461
9d456730b7a8
strfns.cc: improve documentation strings, add examples and tests
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diff
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|
804 |
5690 | 805 DEFUN (list_in_columns, args, , |
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806 doc: /* -*- texinfo -*- |
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807 @deftypefn {} {} list_in_columns (@var{arg}, @var{width}, @var{prefix}) |
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808 Return a string containing the elements of @var{arg} listed in columns with |
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809 an overall maximum width of @var{width} and optional prefix @var{prefix}. |
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810 |
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|
811 The argument @var{arg} must be a cell array of character strings or a |
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812 character array. |
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|
813 |
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814 If @var{width} is not specified or is an empty matrix, or less than or equal |
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815 to zero, the width of the terminal screen is used. Newline characters are |
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816 used to break the lines in the output string. For example: |
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817 @c Set example in small font to prevent overfull line |
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818 |
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819 @smallexample |
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820 @group |
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|
821 list_in_columns (@{"abc", "def", "ghijkl", "mnop", "qrs", "tuv"@}, 20) |
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822 @result{} abc mnop |
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823 def qrs |
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824 ghijkl tuv |
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|
825 |
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826 whos ans |
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827 @result{} |
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828 Variables in the current scope: |
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829 |
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830 Attr Name Size Bytes Class |
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831 ==== ==== ==== ===== ===== |
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832 ans 1x37 37 char |
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833 |
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834 Total is 37 elements using 37 bytes |
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835 @end group |
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836 @end smallexample |
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837 |
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838 @seealso{terminal_size} |
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839 @end deftypefn */) |
5690 | 840 { |
841 int nargin = args.length (); | |
842 | |
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843 if (nargin < 1 || nargin > 3) |
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844 print_usage (); |
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845 |
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846 string_vector s = args(0).xstring_vector_value ("list_in_columns: ARG must be a cellstr or char array"); |
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847 |
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848 int width = -1; |
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849 |
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850 if (nargin > 1 && ! args(1).is_empty ()) |
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851 width = args(1).xint_value ("list_in_columns: WIDTH must be an integer"); |
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852 |
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853 std::string prefix; |
5690 | 854 |
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855 if (nargin > 2) |
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856 prefix = args(2).xstring_value ("list_in_columns: PREFIX must be a string"); |
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857 |
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858 std::ostringstream buf; |
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859 |
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860 s.list_in_columns (buf, width, prefix); |
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861 |
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862 return ovl (buf.str ()); |
5690 | 863 } |
864 | |
807 | 865 /* |
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866 %!test |
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867 %! input = {"abc", "def", "ghijkl", "mnop", "qrs", "tuv"}; |
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868 %! result = "abc mnop\ndef qrs\nghijkl tuv\n"; |
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869 %! assert (list_in_columns (input, 20), result); |
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870 %!test |
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871 %! input = ["abc"; "def"; "ghijkl"; "mnop"; "qrs"; "tuv"]; |
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872 %! result = "abc mnop \ndef qrs \nghijkl tuv \n"; |
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873 %! assert (list_in_columns (input, 20), result); |
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874 %!test |
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875 %! input = ["abc"; "def"; "ghijkl"; "mnop"; "qrs"; "tuv"]; |
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876 %! result = " abc mnop \n def qrs \n ghijkl tuv \n"; |
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877 %! assert (list_in_columns (input, 20, " "), result); |
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878 |
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879 %!error list_in_columns () |
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880 %!error list_in_columns (["abc", "def"], 20, 2) |
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881 %!error list_in_columns (["abc", "def"], 20, " ", 3) |
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882 %!error <list_in_columns: WIDTH must be an integer> list_in_columns (["abc", "def"], "a") |
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883 */ |