Mercurial > octave-nkf
annotate src/strfns.cc @ 8464:cb48e594a441
Fchar, Fstrvcat: use queue correctly
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Mon, 12 Jan 2009 12:36:09 -0500 |
| parents | a74871446af7 |
| children | 5451f7460ea6 |
| rev | line source |
|---|---|
| 807 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1994, 1995, 1996, 1997, 1999, 2002, 2003, 2004, 2005, |
| 4 2006, 2007 John W. Eaton | |
| 807 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 807 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 807 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 1192 | 25 #include <config.h> |
| 807 | 26 #endif |
| 27 | |
| 1355 | 28 #include <cctype> |
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29 |
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30 #include <queue> |
| 5765 | 31 #include <sstream> |
| 807 | 32 |
| 33 #include "dMatrix.h" | |
| 34 | |
| 5416 | 35 #include "Cell.h" |
| 1355 | 36 #include "defun.h" |
| 807 | 37 #include "error.h" |
| 38 #include "gripes.h" | |
| 2366 | 39 #include "ov.h" |
| 1355 | 40 #include "oct-obj.h" |
| 4457 | 41 #include "unwind-prot.h" |
| 807 | 42 #include "utils.h" |
| 43 | |
| 4358 | 44 DEFUN (char, args, , |
| 45 "-*- texinfo -*-\n\ | |
| 46 @deftypefn {Built-in Function} {} char (@var{x})\n\ | |
| 47 @deftypefnx {Built-in Function} {} char (@var{cell_array})\n\ | |
| 48 @deftypefnx {Built-in Function} {} char (@var{s1}, @var{s2}, @dots{})\n\ | |
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49 Create a string array from one or more numeric matrices, character\n\ |
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50 matrices or cell arrays. For numerical input, each element is converted\n\ |
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51 to the corresponding ASCII character. The arguments (and elements of\n\ |
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52 cell array(s)) are concatenated vertically.\n\ |
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53 The returned values are padded with blanks as needed to make each row\n\ |
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54 of the string array have the same length. Empty strings are not removed.\n\ |
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55 For example,\n\ |
| 4358 | 56 \n\ |
| 57 @example\n\ | |
| 58 @group\n\ | |
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59 char ([97, 98, 99], \"\", @{\"98\", \"99\", 100@}, [\"num\", \"bers\"])\n\ |
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60 @result{} [\"abc \"\n\ |
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61 \" \"\n\ |
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62 \"98 \"\n\ |
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63 \"99 \"\n\ |
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64 \"d \"\n\ |
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65 \"numbers\"]\n\ |
| 4358 | 66 @end group\n\ |
| 67 @end example\n\ | |
| 68 \n\ | |
| 69 @end deftypefn") | |
| 70 { | |
| 71 octave_value retval; | |
| 72 | |
| 73 int nargin = args.length (); | |
| 74 | |
| 75 if (nargin == 1) | |
| 5281 | 76 retval = args(0).convert_to_str (true, true, |
| 77 args(0).is_dq_string () ? '"' : '\''); | |
| 4358 | 78 else if (nargin > 1) |
| 79 { | |
| 80 int n_elts = 0; | |
| 81 | |
| 82 int max_len = 0; | |
| 83 | |
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84 std::queue<string_vector> args_as_strings; |
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85 |
| 4358 | 86 for (int i = 0; i < nargin; i++) |
| 87 { | |
| 5707 | 88 string_vector s = args(i).all_strings (); |
| 4358 | 89 |
| 90 if (error_state) | |
| 91 { | |
| 4457 | 92 error ("char: unable to convert some args to strings"); |
| 4358 | 93 return retval; |
| 94 } | |
| 95 | |
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96 if (s.length () > 0) |
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97 n_elts += s.length (); |
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98 else |
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99 n_elts += 1; |
| 4358 | 100 |
| 101 int s_max_len = s.max_length (); | |
| 102 | |
| 103 if (s_max_len > max_len) | |
| 104 max_len = s_max_len; | |
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105 |
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106 args_as_strings.push (s); |
| 4358 | 107 } |
| 108 | |
| 109 string_vector result (n_elts); | |
| 110 | |
| 111 int k = 0; | |
| 112 | |
| 113 for (int i = 0; i < nargin; i++) | |
| 114 { | |
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115 string_vector s = args_as_strings.front (); |
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116 args_as_strings.pop (); |
| 4358 | 117 |
| 118 int n = s.length (); | |
| 119 | |
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120 if (n > 0) |
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121 { |
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122 for (int j = 0; j < n; j++) |
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123 { |
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124 std::string t = s[j]; |
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125 int t_len = t.length (); |
| 4358 | 126 |
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127 if (max_len > t_len) |
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128 t += std::string (max_len - t_len, ' '); |
| 4358 | 129 |
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130 result[k++] = t; |
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131 } |
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132 } |
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133 else |
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134 result[k++] = std::string (max_len, ' '); |
| 4358 | 135 } |
| 136 | |
| 5280 | 137 retval = octave_value (result, '\''); |
| 4358 | 138 } |
| 139 else | |
| 5823 | 140 print_usage (); |
| 4358 | 141 |
| 142 return retval; | |
| 143 } | |
| 144 | |
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145 /* |
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146 %!error <Invalid call to char> char() |
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147 %!assert (char (100) == "d"); |
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148 %!assert (all(char (100,100) == ["d";"d"])); |
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149 %!assert (all(char ({100,100}) == ["d";"d"])); |
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150 %!assert (all(char ([100,100]) == ["dd"])); |
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151 %!assert (all(char ({100,{100}}) == ["d";"d"])); |
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152 %!assert (all(char (100, [], 100) == ["d";" ";"d"])) |
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153 %!assert (all(char ({100, [], 100}) == ["d";" ";"d"])) |
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154 %!assert (all(char ({100,{100, {""}}}) == ["d";"d";" "])) |
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155 %!assert (all(char (["a";"be"], {"c", 100}) == ["a";"be";"c";"d"])) |
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156 %!assert(strcmp (char ("a", "bb", "ccc"), ["a "; "bb "; "ccc"])); |
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157 */ |
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158 |
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159 DEFUN (strvcat, args, , |
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160 "-*- texinfo -*-\n\ |
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161 @deftypefn {Built-in Function} {} strvcat (@var{x})\n\ |
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162 @deftypefnx {Built-in Function} {} strvcat (@var{cell_array})\n\ |
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163 @deftypefnx {Built-in Function} {} strvcat (@var{s1}, @var{s2}, @dots{})\n\ |
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164 Create a character array from one or more numeric matrices, character\n\ |
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165 matrices or cell arrays. For numerical input, each element is converted\n\ |
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166 to the corresponding ASCII character. The arguments (and elements of\n\ |
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167 cell array(s)) are concatenated vertically.\n\ |
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168 The returned values are padded with blanks as needed to make each row\n\ |
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169 of the string array have the same length. Unlike @code{char}, empty\n\ |
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170 strings are removed.\n\ |
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171 For example,\n\ |
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172 \n\ |
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173 @example\n\ |
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174 @group\n\ |
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175 strvcat ([97, 98, 99], \"\", @{\"98\", \"99\", 100@}, [\"num\", \"bers\"])\n\ |
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176 @result{} [\"abc \"\n\ |
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177 \"98 \"\n\ |
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178 \"99 \"\n\ |
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179 \"d \"\n\ |
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180 \"numbers\"]\n\ |
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181 @end group\n\ |
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182 @end example\n\ |
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183 \n\ |
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184 @seealso{char, strcat, cstrcat}\n\ |
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185 @end deftypefn") |
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186 { |
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187 octave_value retval; |
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188 |
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189 int nargin = args.length (); |
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190 |
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191 if (nargin > 0) |
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192 { |
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193 int n_elts = 0; |
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194 |
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195 int max_len = 0; |
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196 |
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197 std::queue<string_vector> args_as_strings; |
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198 |
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199 for (int i = 0; i < nargin; i++) |
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200 { |
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201 string_vector s = args(i).all_strings (); |
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202 |
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203 if (error_state) |
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204 { |
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205 error ("strvcat: unable to convert some args to strings"); |
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206 return retval; |
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207 } |
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208 |
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209 int n = s.length (); |
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210 |
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211 // do not count empty strings in calculation of number of elements |
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212 if (n > 0) |
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213 { |
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214 for (int j = 0; j < n; j++) |
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215 { |
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216 if (s[j].length () > 0) |
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217 n_elts++; |
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218 } |
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219 } |
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220 |
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221 int s_max_len = s.max_length (); |
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222 |
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223 if (s_max_len > max_len) |
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224 max_len = s_max_len; |
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225 |
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226 args_as_strings.push (s); |
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227 } |
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228 |
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229 string_vector result (n_elts); |
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230 |
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231 int k = 0; |
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232 |
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233 for (int i = 0; i < nargin; i++) |
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234 { |
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235 string_vector s = args_as_strings.front (); |
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236 args_as_strings.pop (); |
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237 |
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238 int n = s.length (); |
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239 |
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240 if (n > 0) |
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241 { |
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242 for (int j = 0; j < n; j++) |
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243 { |
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244 std::string t = s[j]; |
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245 if (t.length () > 0) |
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246 { |
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247 int t_len = t.length (); |
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248 |
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249 if (max_len > t_len) |
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250 t += std::string (max_len - t_len, ' '); |
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251 |
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252 result[k++] = t; |
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253 } |
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254 } |
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255 } |
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256 } |
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257 |
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258 retval = octave_value (result, '\''); |
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259 } |
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260 else |
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261 print_usage (); |
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262 |
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263 return retval; |
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264 } |
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265 |
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266 /* |
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267 %!error <Invalid call to strvcat> strvcat() |
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268 %!assert (strvcat (""), ""); |
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269 %!assert (strvcat (100) == "d"); |
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270 %!assert (all(strvcat (100,100) == ["d";"d"])); |
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271 %!assert (all(strvcat ({100,100}) == ["d";"d"])); |
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272 %!assert (all(strvcat ([100,100]) == ["dd"])); |
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273 %!assert (all(strvcat ({100,{100}}) == ["d";"d"])); |
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274 %!assert (all(strvcat (100, [], 100) == ["d";"d"])) |
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275 %!assert (all(strvcat ({100, [], 100}) == ["d";"d"])) |
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276 %!assert (all(strvcat ({100,{100, {""}}}) == ["d";"d"])) |
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277 %!assert (all(strvcat (["a";"be"], {"c", 100}) == ["a";"be";"c";"d"])) |
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278 %!assert(strcmp (strvcat ("a", "bb", "ccc"), ["a "; "bb "; "ccc"])); |
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279 */ |
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280 |
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281 |
| 4535 | 282 DEFUN (ischar, args, , |
| 3361 | 283 "-*- texinfo -*-\n\ |
| 4535 | 284 @deftypefn {Built-in Function} {} ischar (@var{a})\n\ |
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285 Return 1 if @var{a} is a character array. Otherwise, return 0.\n\ |
| 3361 | 286 @end deftypefn") |
| 807 | 287 { |
| 4233 | 288 octave_value retval; |
| 807 | 289 |
| 290 int nargin = args.length (); | |
| 291 | |
| 292 if (nargin == 1 && args(0).is_defined ()) | |
| 4233 | 293 retval = args(0).is_string (); |
| 807 | 294 else |
| 5823 | 295 print_usage (); |
| 807 | 296 |
| 297 return retval; | |
| 298 } | |
| 299 | |
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300 /* |
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301 |
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302 %!assert (ischar ("a"), logical (1)); |
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303 %!assert (ischar (["ab";"cd"]), logical (1)); |
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304 %!assert (ischar ({"ab"}), logical (0)); |
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305 %!assert (ischar (1), logical (0)); |
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306 %!error <Invalid call to ischar.*> ischar (); |
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307 |
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308 */ |
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309 |
| 5415 | 310 DEFUN (strcmp, args, , |
| 311 "-*- texinfo -*-\n\ | |
| 6678 | 312 @deftypefn {Built-in Function} {} strcmp (@var{s1}, @var{s2})\n\ |
| 5415 | 313 Return 1 if the character strings @var{s1} and @var{s2} are the same,\n\ |
| 314 and 0 otherwise.\n\ | |
| 5674 | 315 \n\ |
| 316 If either @var{s1} or @var{s2} is a cell array of strings, then an array\n\ | |
| 317 of the same size is returned, containing the values described above for\n\ | |
| 318 every member of the cell array. The other argument may also be a cell\n\ | |
| 319 array of strings (of the same size or with only one element), char matrix\n\ | |
| 320 or character string.\n\ | |
| 321 \n\ | |
| 322 @strong{Caution:} For compatibility with @sc{Matlab}, Octave's strcmp\n\ | |
| 323 function returns 1 if the character strings are equal, and 0 otherwise.\n\ | |
| 324 This is just the opposite of the corresponding C library function.\n\ | |
| 325 @seealso{strcmpi, strncmp, strncmpi}\n\ | |
| 5415 | 326 @end deftypefn") |
| 327 { | |
| 5531 | 328 octave_value retval; |
| 5415 | 329 |
| 5416 | 330 if (args.length () == 2) |
| 331 { | |
| 332 bool s1_string = args(0).is_string (); | |
| 333 bool s1_cell = args(0).is_cell (); | |
| 334 bool s2_string = args(1).is_string (); | |
| 335 bool s2_cell = args(1).is_cell (); | |
| 5415 | 336 |
| 5416 | 337 if (s1_string && s2_string) |
| 338 { | |
| 339 // Must match exactly in all dimensions. | |
| 340 | |
| 341 const dim_vector dv1 = args(0).dims (); | |
| 342 const dim_vector dv2 = args(1).dims (); | |
| 5415 | 343 |
| 5416 | 344 if (dv1.length () == dv2.length ()) |
| 345 { | |
| 346 for (int i = 0; i < dv1.length (); i++) | |
| 347 { | |
| 348 if (dv1(i) != dv2(i)) | |
| 349 { | |
| 350 retval = false; | |
| 351 return retval; | |
| 352 } | |
| 353 } | |
| 5415 | 354 |
| 5416 | 355 if (dv1(0) == 0) |
| 356 retval = true; | |
| 357 else | |
| 358 { | |
| 359 charNDArray s1 = args(0).char_array_value (); | |
| 360 charNDArray s2 = args(1).char_array_value (); | |
| 5415 | 361 |
| 5416 | 362 for (int i = 0; i < dv1.numel (); i++) |
| 363 { | |
| 364 if (s1(i) != s2(i)) | |
| 365 { | |
| 366 retval = false; | |
| 367 return retval; | |
| 368 } | |
| 369 } | |
| 5415 | 370 |
| 5416 | 371 retval = true; |
| 372 } | |
| 5415 | 373 } |
| 374 } | |
| 5416 | 375 else if ((s1_string && s2_cell) || (s1_cell && s2_string)) |
| 5415 | 376 { |
| 5416 | 377 string_vector str; |
| 378 Cell cell; | |
| 379 int r; | |
| 5415 | 380 |
| 5416 | 381 if (s1_string) |
| 382 { | |
| 383 str = args(0).all_strings (); | |
| 384 r = args(0).rows (); | |
| 385 cell = args(1).cell_value (); | |
| 386 } | |
| 387 else | |
| 388 { | |
| 389 str = args(1).all_strings (); | |
| 390 r = args(1).rows (); | |
| 391 cell = args(0).cell_value (); | |
| 392 } | |
| 393 | |
| 5862 | 394 if (r == 0 || r == 1) |
| 5416 | 395 { |
| 396 // Broadcast the string. | |
| 397 | |
| 398 boolNDArray output (cell.dimensions); | |
| 5415 | 399 |
| 5862 | 400 std::string s = r == 0 ? std::string () : str[0]; |
| 401 | |
| 5416 | 402 for (int i = 0; i < cell.length (); i++) |
| 6250 | 403 { |
| 404 if (cell(i).is_string ()) | |
| 405 output(i) = (cell(i).string_value () == s); | |
| 406 else | |
| 407 output(i) = false; | |
| 408 } | |
| 5416 | 409 |
| 410 retval = output; | |
| 411 } | |
| 412 else if (r > 1) | |
| 5415 | 413 { |
| 5416 | 414 if (cell.length () == 1) |
| 5415 | 415 { |
| 5416 | 416 // Broadcast the cell. |
| 417 | |
| 418 const dim_vector dv (r, 1); | |
| 419 boolNDArray output (dv); | |
| 420 | |
| 421 if (cell(0).is_string ()) | |
| 422 { | |
| 423 const std::string str2 = cell(0).string_value (); | |
| 5415 | 424 |
| 5416 | 425 for (int i = 0; i < r; i++) |
| 426 output(i) = (str[i] == str2); | |
| 427 } | |
| 428 else | |
| 429 { | |
| 430 for (int i = 0; i < r; i++) | |
| 431 output(i) = false; | |
| 432 } | |
| 433 | |
| 434 retval = output; | |
| 5415 | 435 } |
| 436 else | |
| 437 { | |
| 5416 | 438 // Must match in all dimensions. |
| 439 | |
| 440 boolNDArray output (cell.dimensions); | |
| 5415 | 441 |
| 5416 | 442 if (cell.length () == r) |
| 443 { | |
| 444 for (int i = 0; i < r; i++) | |
| 6250 | 445 { |
| 446 if (cell(i).is_string ()) | |
| 447 output(i) = (str[i] == cell(i).string_value ()); | |
| 448 else | |
| 449 output(i) = false; | |
| 450 } | |
| 5415 | 451 |
| 5416 | 452 retval = output; |
| 453 } | |
| 454 else | |
| 455 retval = false; | |
| 5415 | 456 } |
| 457 } | |
| 458 } | |
| 5416 | 459 else if (s1_cell && s2_cell) |
| 5415 | 460 { |
| 5416 | 461 Cell cell1; |
| 462 Cell cell2; | |
| 5415 | 463 |
| 5416 | 464 int r1 = args(0).numel (); |
| 465 int r2; | |
| 466 | |
| 467 if (r1 == 1) | |
| 468 { | |
| 469 // Make the singleton cell2. | |
| 5415 | 470 |
| 5416 | 471 cell1 = args(1).cell_value (); |
| 472 cell2 = args(0).cell_value (); | |
| 473 r1 = cell1.length (); | |
| 474 r2 = 1; | |
| 475 } | |
| 476 else | |
| 477 { | |
| 478 cell1 = args(0).cell_value (); | |
| 479 cell2 = args(1).cell_value (); | |
| 480 r2 = cell2.length (); | |
| 481 } | |
| 5415 | 482 |
| 5416 | 483 const dim_vector size1 = cell1.dimensions; |
| 484 const dim_vector size2 = cell2.dimensions; | |
| 485 | |
| 486 boolNDArray output (size1); | |
| 487 | |
| 488 if (r2 == 1) | |
| 489 { | |
| 490 // Broadcast cell2. | |
| 491 | |
| 492 if (! cell2(0).is_string ()) | |
| 5415 | 493 { |
| 5416 | 494 for (int i = 0; i < r1; i++) |
| 495 output(i) = false; | |
| 5415 | 496 } |
| 497 else | |
| 5416 | 498 { |
| 499 const std::string str2 = cell2(0).string_value (); | |
| 500 | |
| 501 for (int i = 0; i < r1; i++) | |
| 502 { | |
| 503 if (cell1(i).is_string ()) | |
| 504 { | |
| 505 const std::string str1 = cell1(i).string_value (); | |
| 506 output(i) = (str1 == str2); | |
| 507 } | |
| 508 else | |
| 509 output(i) = false; | |
| 510 } | |
| 511 } | |
| 5415 | 512 } |
| 5416 | 513 else |
| 514 { | |
| 515 if (size1 != size2) | |
| 516 { | |
| 517 error ("strcmp: nonconformant cell arrays"); | |
| 518 return retval; | |
| 519 } | |
| 520 | |
| 521 for (int i = 0; i < r1; i++) | |
| 522 { | |
| 523 if (cell1(i).is_string () && cell2(i).is_string ()) | |
| 524 { | |
| 525 const std::string str1 = cell1(i).string_value (); | |
| 526 const std::string str2 = cell2(i).string_value (); | |
| 527 output(i) = (str1 == str2); | |
| 528 } | |
| 529 else | |
| 530 output(i) = false; | |
| 531 } | |
| 532 } | |
| 533 | |
| 534 retval = output; | |
| 5415 | 535 } |
| 5531 | 536 else |
| 537 retval = false; | |
| 5415 | 538 } |
| 5416 | 539 else |
| 5823 | 540 print_usage (); |
| 5415 | 541 |
| 542 return retval; | |
| 543 } | |
| 544 | |
| 5862 | 545 /* |
| 546 %!shared x | |
| 547 %! x = char (zeros (0, 2)); | |
| 548 %!assert (strcmp ('', x) == false); | |
| 549 %!assert (strcmp (x, '') == false); | |
| 550 %!assert (strcmp (x, x) == true); | |
| 5911 | 551 ## %!assert (strcmp ({''}, x) == false); |
| 552 ## %!assert (strcmp ({x}, '') == false); | |
| 553 ## %!assert (strcmp ({x}, x) == true); | |
| 554 ## %!assert (strcmp ('', {x}) == false); | |
| 555 ## %!assert (strcmp (x, {''}) == false); | |
| 556 ## %!assert (strcmp (x, {x}) == true); | |
| 557 ## %!assert (all (strcmp ({x; x}, '') == [false; false])); | |
| 558 ## %!assert (all (strcmp ({x; x}, {''}) == [false; false])); | |
| 559 ## %!assert (all (strcmp ('', {x; x}) == [false; false])); | |
| 560 ## %!assert (all (strcmp ({''}, {x; x}) == [false; false])); | |
| 5862 | 561 %!assert (strcmp ({'foo'}, x) == false); |
| 562 %!assert (strcmp ({'foo'}, 'foo') == true); | |
| 563 %!assert (strcmp ({'foo'}, x) == false); | |
| 564 %!assert (strcmp (x, {'foo'}) == false); | |
| 565 %!assert (strcmp ('foo', {'foo'}) == true); | |
| 566 %!assert (strcmp (x, {'foo'}) == false); | |
| 567 %!shared y | |
| 568 %! y = char (zeros (2, 0)); | |
| 569 %!assert (strcmp ('', y) == false); | |
| 570 %!assert (strcmp (y, '') == false); | |
| 571 %!assert (strcmp (y, y) == true); | |
| 572 %!assert (all (strcmp ({''}, y) == [true; true])); | |
| 573 %!assert (strcmp ({y}, '') == true); | |
| 574 %!assert (all (strcmp ({y}, y) == [true; true])); | |
| 575 %!assert (all (strcmp ('', {y}) == [true; true])); | |
| 576 %!assert (all (strcmp (y, {''}) == [true; true])); | |
| 577 %!assert (all (strcmp (y, {y}) == [true; true])); | |
| 5911 | 578 ## %!assert (all (strcmp ({y; y}, '') == [false; false])); |
| 579 ## %!assert (all (strcmp ({y; y}, {''}) == [false; false])); | |
| 580 ## %!assert (all (strcmp ('', {y; y}) == [false; false])); | |
| 581 ## %!assert (all (strcmp ({''}, {y; y}) == [false; false])); | |
| 5862 | 582 %!assert (all (strcmp ({'foo'}, y) == [false; false])); |
| 583 %!assert (all (strcmp ({'foo'}, y) == [false; false])); | |
| 584 %!assert (all (strcmp (y, {'foo'}) == [false; false])); | |
| 585 %!assert (all (strcmp (y, {'foo'}) == [false; false])); | |
| 586 */ | |
| 587 | |
| 6250 | 588 DEFUN (strncmp, args, , |
| 589 "-*- texinfo -*-\n\ | |
| 6678 | 590 @deftypefn {Built-in Function} {} strncmp (@var{s1}, @var{s2}, @var{n})\n\ |
| 6250 | 591 Return 1 if the first @var{n} characters of strings @var{s1} and @var{s2} are the same,\n\ |
| 592 and 0 otherwise.\n\ | |
| 593 \n\ | |
| 594 @example\n\ | |
| 595 @group\n\ | |
| 596 strncmp (\"abce\", \"abcd\", 3)\n\ | |
| 597 @result{} 1\n\ | |
| 598 @end group\n\ | |
| 599 @end example\n\ | |
| 600 \n\ | |
| 601 If either @var{s1} or @var{s2} is a cell array of strings, then an array\n\ | |
| 602 of the same size is returned, containing the values described above for\n\ | |
| 603 every member of the cell array. The other argument may also be a cell\n\ | |
| 604 array of strings (of the same size or with only one element), char matrix\n\ | |
| 605 or character string.\n\ | |
| 606 \n\ | |
| 607 @example\n\ | |
| 608 @group\n\ | |
| 6256 | 609 strncmp (\"abce\", @{\"abcd\", \"bca\", \"abc\"@}, 3)\n\ |
| 6250 | 610 @result{} [1, 0, 1]\n\ |
| 611 @end group\n\ | |
| 612 @end example\n\ | |
| 613 \n\ | |
| 614 @strong{Caution:} For compatibility with @sc{Matlab}, Octave's strncmp\n\ | |
| 615 function returns 1 if the character strings are equal, and 0 otherwise.\n\ | |
| 616 This is just the opposite of the corresponding C library function.\n\ | |
| 617 @seealso{strncmpi, strcmp, strcmpi}\n\ | |
| 618 @end deftypefn") | |
| 619 { | |
| 620 octave_value retval; | |
| 621 | |
| 622 if (args.length () == 3) | |
| 623 { | |
| 624 bool s1_string = args(0).is_string (); | |
| 625 bool s1_cell = args(0).is_cell (); | |
| 626 bool s2_string = args(1).is_string (); | |
| 627 bool s2_cell = args(1).is_cell (); | |
| 628 | |
| 629 // Match only first n strings. | |
| 630 int n = args(2).int_value (); | |
| 631 | |
| 632 if (n <= 0) | |
| 633 { | |
| 634 error ("strncmp: N must be greater than 0"); | |
| 635 return retval; | |
| 636 } | |
| 637 | |
| 638 if (s1_string && s2_string) | |
| 639 { | |
| 640 // The only restriction here is that each string has equal or | |
| 641 // greater than n characters | |
| 642 | |
| 643 const dim_vector dv1 = args(0).dims (); | |
| 644 const dim_vector dv2 = args(1).dims (); | |
| 645 | |
| 646 if (dv1.numel () >= n && dv2.numel () >= n) | |
| 647 { | |
| 648 // Follow Matlab in the sense that the first n characters of | |
| 649 // the two strings (in column major order) need to be the same. | |
| 650 charNDArray s1 = args(0).char_array_value (); | |
| 651 charNDArray s2 = args(1).char_array_value (); | |
| 652 | |
| 653 for (int i = 0; i < n; i++) | |
| 654 { | |
| 655 if (s1(i) != s2(i)) | |
| 656 { | |
| 657 retval = false; | |
| 658 return retval; | |
| 659 } | |
| 660 } | |
| 661 | |
| 662 retval = true; | |
| 663 } | |
| 664 else | |
| 665 retval = false; | |
| 666 } | |
| 667 else if ((s1_string && s2_cell) || (s1_cell && s2_string)) | |
| 668 { | |
| 669 string_vector str; | |
| 670 Cell cell; | |
| 671 int r, c; | |
| 672 | |
| 673 if (s1_string) | |
| 674 { | |
| 675 str = args(0).all_strings (); | |
| 676 r = args(0).rows (); | |
| 677 c = args(0).columns (); | |
| 678 cell = args(1).cell_value (); | |
| 679 } | |
| 680 else | |
| 681 { | |
| 682 str = args(1).all_strings (); | |
| 683 r = args(1).rows (); | |
| 684 c = args(1).columns (); | |
| 685 cell = args(0).cell_value (); | |
| 686 } | |
| 687 | |
| 688 if (r == 1) | |
| 689 { | |
| 690 // Broadcast the string. | |
| 691 | |
| 692 boolNDArray output (cell.dimensions); | |
| 693 | |
| 694 if (c < n) | |
| 695 { | |
| 696 for (int i = 0; i < cell.length (); i++) | |
| 697 output(i) = false; | |
| 698 } | |
| 699 else | |
| 700 { | |
| 701 for (int i = 0; i < cell.length (); i++) | |
| 702 { | |
| 703 if (cell(i).is_string ()) | |
| 704 { | |
| 705 const std::string str2 = cell(i).string_value (); | |
| 706 | |
| 707 if (str2.length() >= n) | |
| 708 { | |
| 709 if (str2.compare (0, n, str[0], 0, n) == 0) | |
| 710 output(i) = true; | |
| 711 else | |
| 712 output(i) = false; | |
| 713 } | |
| 714 else | |
| 715 output(i) = false; | |
| 716 } | |
| 717 } | |
| 718 } | |
| 719 | |
| 720 retval = output; | |
| 721 } | |
| 722 else if (r > 1) | |
| 723 { | |
| 724 if (cell.length () == 1) | |
| 725 { | |
| 726 // Broadcast the cell. | |
| 727 | |
| 728 const dim_vector dv (r, 1); | |
| 729 boolNDArray output (dv); | |
| 730 | |
| 731 if (cell(0).is_string () && c >= n) | |
| 732 { | |
| 733 const std::string str2 = cell(0).string_value (); | |
| 734 | |
| 735 if (str2.length () >= n) | |
| 736 { | |
| 737 for (int i = 0; i < r; i++) | |
| 738 { | |
| 739 if (str[i].compare (0, n, str2, 0, n) == 0) | |
| 740 output(i) = true; | |
| 741 else | |
| 742 output(i) = false; | |
| 743 } | |
| 744 } | |
| 745 else | |
| 746 { | |
| 747 for (int i = 0; i < r; i++) | |
| 748 output(i) = false; | |
| 749 } | |
| 750 } | |
| 751 else | |
| 752 { | |
| 753 for (int i = 0; i < r; i++) | |
| 754 output(i) = false; | |
| 755 } | |
| 756 | |
| 757 retval = output; | |
| 758 } | |
| 759 else | |
| 760 { | |
| 761 // Must match in all dimensions. | |
| 762 | |
| 763 boolNDArray output (cell.dimensions); | |
| 764 | |
| 765 if (cell.numel () == r) | |
| 766 { | |
| 767 for (int i = 0; i < r; i++) | |
| 768 { | |
| 769 output(i) = false; | |
| 770 | |
| 771 if (cell(i).is_string () && c >= n) | |
| 772 { | |
| 773 std::string str2 = cell(i).string_value (); | |
| 774 | |
| 775 if (str2.length () >= n | |
| 776 && str2.compare (0, n, str[i], 0, n) == 0) | |
| 777 output(i) = true; | |
| 778 } | |
| 779 } | |
| 780 | |
| 781 retval = output; | |
| 782 } | |
| 783 else | |
| 784 { | |
| 785 error ("strncmp: the number of rows of the string matrix must match the number of elements in the cell"); | |
| 786 return retval; | |
| 787 } | |
| 788 } | |
| 789 } | |
| 790 } | |
| 791 else if (s1_cell && s2_cell) | |
| 792 { | |
| 793 Cell cell1; | |
| 794 Cell cell2; | |
| 795 | |
| 796 int r1 = args(0).numel (); | |
| 797 int r2; | |
| 798 | |
| 799 if (r1 == 1) | |
| 800 { | |
| 801 // Make the singleton cell2. | |
| 802 | |
| 803 cell1 = args(1).cell_value (); | |
| 804 cell2 = args(0).cell_value (); | |
| 805 r1 = cell1.length (); | |
| 806 r2 = 1; | |
| 807 } | |
| 808 else | |
| 809 { | |
| 810 cell1 = args(0).cell_value (); | |
| 811 cell2 = args(1).cell_value (); | |
| 812 r2 = cell2.length (); | |
| 813 } | |
| 814 | |
| 815 const dim_vector size1 = cell1.dimensions; | |
| 816 const dim_vector size2 = cell2.dimensions; | |
| 817 | |
| 818 boolNDArray output (size1); | |
| 819 | |
| 820 if (r2 == 1) | |
| 821 { | |
| 822 // Broadcast cell2. | |
| 823 | |
| 824 if (! cell2(0).is_string ()) | |
| 825 { | |
| 826 for (int i = 0; i < r1; i++) | |
| 827 output(i) = false; | |
| 828 } | |
| 829 else | |
| 830 { | |
| 831 const std::string str2 = cell2(0).string_value (); | |
| 832 | |
| 833 for (int i = 0; i < r1; i++) | |
| 834 { | |
| 835 if (cell1(i).is_string ()) | |
| 836 { | |
| 837 const std::string str1 = cell1(i).string_value (); | |
| 838 | |
| 839 if (str1.length () >= n && str2.length () >= n | |
| 840 && str1.compare (0, n, str2, 0, n) == 0) | |
| 841 output(i) = true; | |
| 842 else | |
| 843 output(i) = false; | |
| 844 } | |
| 845 else | |
| 846 output(i) = false; | |
| 847 } | |
| 848 } | |
| 849 } | |
| 850 else | |
| 851 { | |
| 852 if (size1 != size2) | |
| 853 { | |
| 854 error ("strncmp: nonconformant cell arrays"); | |
| 855 return retval; | |
| 856 } | |
| 857 | |
| 858 for (int i = 0; i < r1; i++) | |
| 859 { | |
| 860 if (cell1(i).is_string () && cell2(i).is_string ()) | |
| 861 { | |
| 862 const std::string str1 = cell1(i).string_value (); | |
| 863 const std::string str2 = cell2(i).string_value (); | |
| 864 | |
| 865 if (str1.length () >= n && str2.length () >= n | |
| 866 && str1.compare (0, n, str2, 0, n) == 0) | |
| 867 output(i) = true; | |
| 868 else | |
| 869 output(i) = false; | |
| 870 } | |
| 871 else | |
| 872 output(i) = false; | |
| 873 } | |
| 874 } | |
| 875 | |
| 876 retval = output; | |
| 877 } | |
| 878 else | |
| 879 retval = false; | |
| 880 } | |
| 881 else | |
| 882 print_usage (); | |
| 883 | |
| 884 return retval; | |
| 885 } | |
| 886 | |
|
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887 /* |
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888 %!error <Invalid call to strncmp.*> strncmp (); |
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889 %!error <Invalid call to strncmp.*> strncmp ("abc", "def"); |
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890 %!assert (strncmp ("abce", "abc", 3) == 1) |
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891 %!assert (strncmp (100, 100, 1) == 0) |
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892 %!assert (all (strncmp ("abce", {"abcd", "bca", "abc"}, 3) == [1, 0, 1])) |
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893 %!assert (all (strncmp ("abc", {"abcd", "bca", "abc"}, 4) == [0, 0, 0])) |
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894 %!assert (all (strncmp ({"abcd", "bca", "abc"},"abce", 3) == [1, 0, 1])) |
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895 %!assert (all (strncmp ({"abcd", "bca", "abc"},{"abcd", "bca", "abe"}, 3) == [1, 1, 0])) |
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896 */ |
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897 |
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898 |
| 5690 | 899 DEFUN (list_in_columns, args, , |
| 900 "-*- texinfo -*-\n\ | |
| 901 @deftypefn {Built-in Function} {} list_in_columns (@var{arg}, @var{width})\n\ | |
| 902 Return a string containing the elements of @var{arg} listed in\n\ | |
| 903 columns with an overall maximum width of @var{width}. The argument\n\ | |
| 904 @var{arg} must be a cell array of character strings or a character array.\n\ | |
| 905 If @var{width} is not specified, the width of the terminal screen is used.\n\ | |
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906 Newline characters are used to break the lines in the output string.\n\ |
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907 For example:\n\ |
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908 \n\ |
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909 @example\n\ |
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910 @group\n\ |
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911 list_in_columns (@{\"abc\", \"def\", \"ghijkl\", \"mnop\", \"qrs\", \"tuv\"@}, 20)\n\ |
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912 @result{} ans = abc mnop\n\ |
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913 def qrs\n\ |
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914 ghijkl tuv\n\ |
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915 \n\ |
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916 whos ans\n\ |
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917 @result{}\n\ |
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918 Variables in the current scope:\n\ |
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919 \n\ |
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920 Attr Name Size Bytes Class\n\ |
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921 ==== ==== ==== ===== =====\n\ |
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922 ans 1x37 37 char\n\ |
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923 \n\ |
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924 Total is 37 elements using 37 bytes\n\ |
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925 @end group\n\ |
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926 @end example\n\ |
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927 \n\ |
| 5690 | 928 @seealso{terminal_size}\n\ |
| 929 @end deftypefn") | |
| 930 { | |
| 931 octave_value retval; | |
| 932 | |
| 933 int nargin = args.length (); | |
| 934 | |
| 935 if (nargin == 1 || nargin == 2) | |
| 936 { | |
| 937 string_vector s = args(0).all_strings (); | |
| 938 | |
| 939 if (! error_state) | |
| 940 { | |
| 5765 | 941 std::ostringstream buf; |
| 5690 | 942 |
| 943 if (nargin == 1) | |
| 944 // Let list_in_columns query terminal width. | |
| 945 s.list_in_columns (buf); | |
| 946 else | |
| 947 { | |
| 948 int width = args(1).int_value (); | |
| 949 | |
| 950 if (! error_state) | |
| 951 s.list_in_columns (buf, width); | |
| 952 else | |
| 953 error ("list_in_columns: expecting width to be an integer"); | |
| 954 } | |
| 955 | |
| 5765 | 956 retval = buf.str (); |
| 5690 | 957 } |
| 958 else | |
| 959 error ("list_in_columns: expecting cellstr or char array"); | |
| 960 } | |
| 961 else | |
| 5823 | 962 print_usage (); |
| 5690 | 963 |
| 964 return retval; | |
| 965 } | |
| 966 | |
| 807 | 967 /* |
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968 %!error <Invalid call to list_in_columns.*> list_in_columns (); |
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969 %!error <Invalid call to list_in_columns.*> list_in_columns (["abc", "def"], 20, 2); |
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970 %!error <invalid conversion from string to real scalar.*> list_in_columns (["abc", "def"], "a"); |
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971 %!test |
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972 %! input = {"abc", "def", "ghijkl", "mnop", "qrs", "tuv"}; |
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973 %! result = "abc mnop\ndef qrs\nghijkl tuv\n"; |
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974 %! assert (list_in_columns (input, 20) == result); |
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975 %!test |
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976 %! input = ["abc"; "def"; "ghijkl"; "mnop"; "qrs"; "tuv"]; |
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977 %! result = "abc mnop \ndef qrs \nghijkl tuv \n"; |
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978 %! assert (list_in_columns (input, 20) == result); |
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979 */ |
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980 |
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981 /* |
| 807 | 982 ;;; Local Variables: *** |
| 983 ;;; mode: C++ *** | |
| 984 ;;; End: *** | |
| 985 */ |