Mercurial > hg > octave-lyh
annotate src/strfns.cc @ 8463:a74871446af7
Fchar, Fstrvcat: use queue to avoid duplicate calls to all_strings
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Mon, 12 Jan 2009 12:31:11 -0500 |
| parents | ebdf1e058d85 |
| children | cb48e594a441 |
| 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.pop (); |
| 4358 | 116 |
| 117 int n = s.length (); | |
| 118 | |
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119 if (n > 0) |
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120 { |
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121 for (int j = 0; j < n; j++) |
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122 { |
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123 std::string t = s[j]; |
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124 int t_len = t.length (); |
| 4358 | 125 |
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126 if (max_len > t_len) |
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127 t += std::string (max_len - t_len, ' '); |
| 4358 | 128 |
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129 result[k++] = t; |
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130 } |
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131 } |
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132 else |
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133 result[k++] = std::string (max_len, ' '); |
| 4358 | 134 } |
| 135 | |
| 5280 | 136 retval = octave_value (result, '\''); |
| 4358 | 137 } |
| 138 else | |
| 5823 | 139 print_usage (); |
| 4358 | 140 |
| 141 return retval; | |
| 142 } | |
| 143 | |
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144 /* |
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145 %!error <Invalid call to char> char() |
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146 %!assert (char (100) == "d"); |
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147 %!assert (all(char (100,100) == ["d";"d"])); |
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148 %!assert (all(char ({100,100}) == ["d";"d"])); |
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149 %!assert (all(char ([100,100]) == ["dd"])); |
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150 %!assert (all(char ({100,{100}}) == ["d";"d"])); |
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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 (["a";"be"], {"c", 100}) == ["a";"be";"c";"d"])) |
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155 %!assert(strcmp (char ("a", "bb", "ccc"), ["a "; "bb "; "ccc"])); |
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156 */ |
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157 |
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158 DEFUN (strvcat, args, , |
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159 "-*- texinfo -*-\n\ |
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160 @deftypefn {Built-in Function} {} strvcat (@var{x})\n\ |
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161 @deftypefnx {Built-in Function} {} strvcat (@var{cell_array})\n\ |
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162 @deftypefnx {Built-in Function} {} strvcat (@var{s1}, @var{s2}, @dots{})\n\ |
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163 Create a character array from one or more numeric matrices, character\n\ |
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164 matrices or cell arrays. For numerical input, each element is converted\n\ |
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165 to the corresponding ASCII character. The arguments (and elements of\n\ |
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166 cell array(s)) are concatenated vertically.\n\ |
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167 The returned values are padded with blanks as needed to make each row\n\ |
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168 of the string array have the same length. Unlike @code{char}, empty\n\ |
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169 strings are removed.\n\ |
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170 For example,\n\ |
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171 \n\ |
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172 @example\n\ |
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173 @group\n\ |
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174 strvcat ([97, 98, 99], \"\", @{\"98\", \"99\", 100@}, [\"num\", \"bers\"])\n\ |
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175 @result{} [\"abc \"\n\ |
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176 \"98 \"\n\ |
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177 \"99 \"\n\ |
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178 \"d \"\n\ |
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179 \"numbers\"]\n\ |
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180 @end group\n\ |
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181 @end example\n\ |
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182 \n\ |
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183 @seealso{char, strcat, cstrcat}\n\ |
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184 @end deftypefn") |
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185 { |
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186 octave_value retval; |
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187 |
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188 int nargin = args.length (); |
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189 |
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190 if (nargin > 0) |
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191 { |
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192 int n_elts = 0; |
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193 |
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194 int max_len = 0; |
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195 |
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196 std::queue<string_vector> args_as_strings; |
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197 |
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198 for (int i = 0; i < nargin; i++) |
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199 { |
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200 string_vector s = args(i).all_strings (); |
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201 |
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202 if (error_state) |
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203 { |
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204 error ("strvcat: unable to convert some args to strings"); |
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205 return retval; |
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206 } |
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207 |
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208 int n = s.length (); |
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209 |
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210 // do not count empty strings in calculation of number of elements |
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211 if (n > 0) |
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212 { |
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213 for (int j = 0; j < n; j++) |
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214 { |
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215 if (s[j].length () > 0) |
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216 n_elts++; |
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217 } |
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218 } |
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219 |
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220 int s_max_len = s.max_length (); |
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221 |
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222 if (s_max_len > max_len) |
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223 max_len = s_max_len; |
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224 |
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225 args_as_strings.push (s); |
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226 } |
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227 |
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228 string_vector result (n_elts); |
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229 |
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230 int k = 0; |
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231 |
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232 for (int i = 0; i < nargin; i++) |
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233 { |
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234 string_vector s = args_as_strings.pop (); |
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235 |
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236 int n = s.length (); |
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237 |
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238 if (n > 0) |
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239 { |
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240 for (int j = 0; j < n; j++) |
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241 { |
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242 std::string t = s[j]; |
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243 if (t.length () > 0) |
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244 { |
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245 int t_len = t.length (); |
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246 |
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247 if (max_len > t_len) |
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248 t += std::string (max_len - t_len, ' '); |
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249 |
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250 result[k++] = t; |
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251 } |
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252 } |
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253 } |
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254 } |
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255 |
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256 retval = octave_value (result, '\''); |
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257 } |
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258 else |
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259 print_usage (); |
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260 |
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261 return retval; |
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262 } |
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263 |
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264 /* |
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265 %!error <Invalid call to strvcat> strvcat() |
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266 %!assert (strvcat (""), ""); |
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267 %!assert (strvcat (100) == "d"); |
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268 %!assert (all(strvcat (100,100) == ["d";"d"])); |
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269 %!assert (all(strvcat ({100,100}) == ["d";"d"])); |
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270 %!assert (all(strvcat ([100,100]) == ["dd"])); |
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271 %!assert (all(strvcat ({100,{100}}) == ["d";"d"])); |
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272 %!assert (all(strvcat (100, [], 100) == ["d";"d"])) |
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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 (["a";"be"], {"c", 100}) == ["a";"be";"c";"d"])) |
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276 %!assert(strcmp (strvcat ("a", "bb", "ccc"), ["a "; "bb "; "ccc"])); |
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277 */ |
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278 |
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279 |
| 4535 | 280 DEFUN (ischar, args, , |
| 3361 | 281 "-*- texinfo -*-\n\ |
| 4535 | 282 @deftypefn {Built-in Function} {} ischar (@var{a})\n\ |
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283 Return 1 if @var{a} is a character array. Otherwise, return 0.\n\ |
| 3361 | 284 @end deftypefn") |
| 807 | 285 { |
| 4233 | 286 octave_value retval; |
| 807 | 287 |
| 288 int nargin = args.length (); | |
| 289 | |
| 290 if (nargin == 1 && args(0).is_defined ()) | |
| 4233 | 291 retval = args(0).is_string (); |
| 807 | 292 else |
| 5823 | 293 print_usage (); |
| 807 | 294 |
| 295 return retval; | |
| 296 } | |
| 297 | |
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298 /* |
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299 |
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300 %!assert (ischar ("a"), logical (1)); |
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301 %!assert (ischar (["ab";"cd"]), logical (1)); |
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302 %!assert (ischar ({"ab"}), logical (0)); |
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303 %!assert (ischar (1), logical (0)); |
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304 %!error <Invalid call to ischar.*> ischar (); |
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305 |
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306 */ |
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307 |
| 5415 | 308 DEFUN (strcmp, args, , |
| 309 "-*- texinfo -*-\n\ | |
| 6678 | 310 @deftypefn {Built-in Function} {} strcmp (@var{s1}, @var{s2})\n\ |
| 5415 | 311 Return 1 if the character strings @var{s1} and @var{s2} are the same,\n\ |
| 312 and 0 otherwise.\n\ | |
| 5674 | 313 \n\ |
| 314 If either @var{s1} or @var{s2} is a cell array of strings, then an array\n\ | |
| 315 of the same size is returned, containing the values described above for\n\ | |
| 316 every member of the cell array. The other argument may also be a cell\n\ | |
| 317 array of strings (of the same size or with only one element), char matrix\n\ | |
| 318 or character string.\n\ | |
| 319 \n\ | |
| 320 @strong{Caution:} For compatibility with @sc{Matlab}, Octave's strcmp\n\ | |
| 321 function returns 1 if the character strings are equal, and 0 otherwise.\n\ | |
| 322 This is just the opposite of the corresponding C library function.\n\ | |
| 323 @seealso{strcmpi, strncmp, strncmpi}\n\ | |
| 5415 | 324 @end deftypefn") |
| 325 { | |
| 5531 | 326 octave_value retval; |
| 5415 | 327 |
| 5416 | 328 if (args.length () == 2) |
| 329 { | |
| 330 bool s1_string = args(0).is_string (); | |
| 331 bool s1_cell = args(0).is_cell (); | |
| 332 bool s2_string = args(1).is_string (); | |
| 333 bool s2_cell = args(1).is_cell (); | |
| 5415 | 334 |
| 5416 | 335 if (s1_string && s2_string) |
| 336 { | |
| 337 // Must match exactly in all dimensions. | |
| 338 | |
| 339 const dim_vector dv1 = args(0).dims (); | |
| 340 const dim_vector dv2 = args(1).dims (); | |
| 5415 | 341 |
| 5416 | 342 if (dv1.length () == dv2.length ()) |
| 343 { | |
| 344 for (int i = 0; i < dv1.length (); i++) | |
| 345 { | |
| 346 if (dv1(i) != dv2(i)) | |
| 347 { | |
| 348 retval = false; | |
| 349 return retval; | |
| 350 } | |
| 351 } | |
| 5415 | 352 |
| 5416 | 353 if (dv1(0) == 0) |
| 354 retval = true; | |
| 355 else | |
| 356 { | |
| 357 charNDArray s1 = args(0).char_array_value (); | |
| 358 charNDArray s2 = args(1).char_array_value (); | |
| 5415 | 359 |
| 5416 | 360 for (int i = 0; i < dv1.numel (); i++) |
| 361 { | |
| 362 if (s1(i) != s2(i)) | |
| 363 { | |
| 364 retval = false; | |
| 365 return retval; | |
| 366 } | |
| 367 } | |
| 5415 | 368 |
| 5416 | 369 retval = true; |
| 370 } | |
| 5415 | 371 } |
| 372 } | |
| 5416 | 373 else if ((s1_string && s2_cell) || (s1_cell && s2_string)) |
| 5415 | 374 { |
| 5416 | 375 string_vector str; |
| 376 Cell cell; | |
| 377 int r; | |
| 5415 | 378 |
| 5416 | 379 if (s1_string) |
| 380 { | |
| 381 str = args(0).all_strings (); | |
| 382 r = args(0).rows (); | |
| 383 cell = args(1).cell_value (); | |
| 384 } | |
| 385 else | |
| 386 { | |
| 387 str = args(1).all_strings (); | |
| 388 r = args(1).rows (); | |
| 389 cell = args(0).cell_value (); | |
| 390 } | |
| 391 | |
| 5862 | 392 if (r == 0 || r == 1) |
| 5416 | 393 { |
| 394 // Broadcast the string. | |
| 395 | |
| 396 boolNDArray output (cell.dimensions); | |
| 5415 | 397 |
| 5862 | 398 std::string s = r == 0 ? std::string () : str[0]; |
| 399 | |
| 5416 | 400 for (int i = 0; i < cell.length (); i++) |
| 6250 | 401 { |
| 402 if (cell(i).is_string ()) | |
| 403 output(i) = (cell(i).string_value () == s); | |
| 404 else | |
| 405 output(i) = false; | |
| 406 } | |
| 5416 | 407 |
| 408 retval = output; | |
| 409 } | |
| 410 else if (r > 1) | |
| 5415 | 411 { |
| 5416 | 412 if (cell.length () == 1) |
| 5415 | 413 { |
| 5416 | 414 // Broadcast the cell. |
| 415 | |
| 416 const dim_vector dv (r, 1); | |
| 417 boolNDArray output (dv); | |
| 418 | |
| 419 if (cell(0).is_string ()) | |
| 420 { | |
| 421 const std::string str2 = cell(0).string_value (); | |
| 5415 | 422 |
| 5416 | 423 for (int i = 0; i < r; i++) |
| 424 output(i) = (str[i] == str2); | |
| 425 } | |
| 426 else | |
| 427 { | |
| 428 for (int i = 0; i < r; i++) | |
| 429 output(i) = false; | |
| 430 } | |
| 431 | |
| 432 retval = output; | |
| 5415 | 433 } |
| 434 else | |
| 435 { | |
| 5416 | 436 // Must match in all dimensions. |
| 437 | |
| 438 boolNDArray output (cell.dimensions); | |
| 5415 | 439 |
| 5416 | 440 if (cell.length () == r) |
| 441 { | |
| 442 for (int i = 0; i < r; i++) | |
| 6250 | 443 { |
| 444 if (cell(i).is_string ()) | |
| 445 output(i) = (str[i] == cell(i).string_value ()); | |
| 446 else | |
| 447 output(i) = false; | |
| 448 } | |
| 5415 | 449 |
| 5416 | 450 retval = output; |
| 451 } | |
| 452 else | |
| 453 retval = false; | |
| 5415 | 454 } |
| 455 } | |
| 456 } | |
| 5416 | 457 else if (s1_cell && s2_cell) |
| 5415 | 458 { |
| 5416 | 459 Cell cell1; |
| 460 Cell cell2; | |
| 5415 | 461 |
| 5416 | 462 int r1 = args(0).numel (); |
| 463 int r2; | |
| 464 | |
| 465 if (r1 == 1) | |
| 466 { | |
| 467 // Make the singleton cell2. | |
| 5415 | 468 |
| 5416 | 469 cell1 = args(1).cell_value (); |
| 470 cell2 = args(0).cell_value (); | |
| 471 r1 = cell1.length (); | |
| 472 r2 = 1; | |
| 473 } | |
| 474 else | |
| 475 { | |
| 476 cell1 = args(0).cell_value (); | |
| 477 cell2 = args(1).cell_value (); | |
| 478 r2 = cell2.length (); | |
| 479 } | |
| 5415 | 480 |
| 5416 | 481 const dim_vector size1 = cell1.dimensions; |
| 482 const dim_vector size2 = cell2.dimensions; | |
| 483 | |
| 484 boolNDArray output (size1); | |
| 485 | |
| 486 if (r2 == 1) | |
| 487 { | |
| 488 // Broadcast cell2. | |
| 489 | |
| 490 if (! cell2(0).is_string ()) | |
| 5415 | 491 { |
| 5416 | 492 for (int i = 0; i < r1; i++) |
| 493 output(i) = false; | |
| 5415 | 494 } |
| 495 else | |
| 5416 | 496 { |
| 497 const std::string str2 = cell2(0).string_value (); | |
| 498 | |
| 499 for (int i = 0; i < r1; i++) | |
| 500 { | |
| 501 if (cell1(i).is_string ()) | |
| 502 { | |
| 503 const std::string str1 = cell1(i).string_value (); | |
| 504 output(i) = (str1 == str2); | |
| 505 } | |
| 506 else | |
| 507 output(i) = false; | |
| 508 } | |
| 509 } | |
| 5415 | 510 } |
| 5416 | 511 else |
| 512 { | |
| 513 if (size1 != size2) | |
| 514 { | |
| 515 error ("strcmp: nonconformant cell arrays"); | |
| 516 return retval; | |
| 517 } | |
| 518 | |
| 519 for (int i = 0; i < r1; i++) | |
| 520 { | |
| 521 if (cell1(i).is_string () && cell2(i).is_string ()) | |
| 522 { | |
| 523 const std::string str1 = cell1(i).string_value (); | |
| 524 const std::string str2 = cell2(i).string_value (); | |
| 525 output(i) = (str1 == str2); | |
| 526 } | |
| 527 else | |
| 528 output(i) = false; | |
| 529 } | |
| 530 } | |
| 531 | |
| 532 retval = output; | |
| 5415 | 533 } |
| 5531 | 534 else |
| 535 retval = false; | |
| 5415 | 536 } |
| 5416 | 537 else |
| 5823 | 538 print_usage (); |
| 5415 | 539 |
| 540 return retval; | |
| 541 } | |
| 542 | |
| 5862 | 543 /* |
| 544 %!shared x | |
| 545 %! x = char (zeros (0, 2)); | |
| 546 %!assert (strcmp ('', x) == false); | |
| 547 %!assert (strcmp (x, '') == false); | |
| 548 %!assert (strcmp (x, x) == true); | |
| 5911 | 549 ## %!assert (strcmp ({''}, x) == false); |
| 550 ## %!assert (strcmp ({x}, '') == false); | |
| 551 ## %!assert (strcmp ({x}, x) == true); | |
| 552 ## %!assert (strcmp ('', {x}) == false); | |
| 553 ## %!assert (strcmp (x, {''}) == false); | |
| 554 ## %!assert (strcmp (x, {x}) == true); | |
| 555 ## %!assert (all (strcmp ({x; x}, '') == [false; false])); | |
| 556 ## %!assert (all (strcmp ({x; x}, {''}) == [false; false])); | |
| 557 ## %!assert (all (strcmp ('', {x; x}) == [false; false])); | |
| 558 ## %!assert (all (strcmp ({''}, {x; x}) == [false; false])); | |
| 5862 | 559 %!assert (strcmp ({'foo'}, x) == false); |
| 560 %!assert (strcmp ({'foo'}, 'foo') == true); | |
| 561 %!assert (strcmp ({'foo'}, x) == false); | |
| 562 %!assert (strcmp (x, {'foo'}) == false); | |
| 563 %!assert (strcmp ('foo', {'foo'}) == true); | |
| 564 %!assert (strcmp (x, {'foo'}) == false); | |
| 565 %!shared y | |
| 566 %! y = char (zeros (2, 0)); | |
| 567 %!assert (strcmp ('', y) == false); | |
| 568 %!assert (strcmp (y, '') == false); | |
| 569 %!assert (strcmp (y, y) == true); | |
| 570 %!assert (all (strcmp ({''}, y) == [true; true])); | |
| 571 %!assert (strcmp ({y}, '') == true); | |
| 572 %!assert (all (strcmp ({y}, y) == [true; true])); | |
| 573 %!assert (all (strcmp ('', {y}) == [true; true])); | |
| 574 %!assert (all (strcmp (y, {''}) == [true; true])); | |
| 575 %!assert (all (strcmp (y, {y}) == [true; true])); | |
| 5911 | 576 ## %!assert (all (strcmp ({y; y}, '') == [false; false])); |
| 577 ## %!assert (all (strcmp ({y; y}, {''}) == [false; false])); | |
| 578 ## %!assert (all (strcmp ('', {y; y}) == [false; false])); | |
| 579 ## %!assert (all (strcmp ({''}, {y; y}) == [false; false])); | |
| 5862 | 580 %!assert (all (strcmp ({'foo'}, y) == [false; false])); |
| 581 %!assert (all (strcmp ({'foo'}, y) == [false; false])); | |
| 582 %!assert (all (strcmp (y, {'foo'}) == [false; false])); | |
| 583 %!assert (all (strcmp (y, {'foo'}) == [false; false])); | |
| 584 */ | |
| 585 | |
| 6250 | 586 DEFUN (strncmp, args, , |
| 587 "-*- texinfo -*-\n\ | |
| 6678 | 588 @deftypefn {Built-in Function} {} strncmp (@var{s1}, @var{s2}, @var{n})\n\ |
| 6250 | 589 Return 1 if the first @var{n} characters of strings @var{s1} and @var{s2} are the same,\n\ |
| 590 and 0 otherwise.\n\ | |
| 591 \n\ | |
| 592 @example\n\ | |
| 593 @group\n\ | |
| 594 strncmp (\"abce\", \"abcd\", 3)\n\ | |
| 595 @result{} 1\n\ | |
| 596 @end group\n\ | |
| 597 @end example\n\ | |
| 598 \n\ | |
| 599 If either @var{s1} or @var{s2} is a cell array of strings, then an array\n\ | |
| 600 of the same size is returned, containing the values described above for\n\ | |
| 601 every member of the cell array. The other argument may also be a cell\n\ | |
| 602 array of strings (of the same size or with only one element), char matrix\n\ | |
| 603 or character string.\n\ | |
| 604 \n\ | |
| 605 @example\n\ | |
| 606 @group\n\ | |
| 6256 | 607 strncmp (\"abce\", @{\"abcd\", \"bca\", \"abc\"@}, 3)\n\ |
| 6250 | 608 @result{} [1, 0, 1]\n\ |
| 609 @end group\n\ | |
| 610 @end example\n\ | |
| 611 \n\ | |
| 612 @strong{Caution:} For compatibility with @sc{Matlab}, Octave's strncmp\n\ | |
| 613 function returns 1 if the character strings are equal, and 0 otherwise.\n\ | |
| 614 This is just the opposite of the corresponding C library function.\n\ | |
| 615 @seealso{strncmpi, strcmp, strcmpi}\n\ | |
| 616 @end deftypefn") | |
| 617 { | |
| 618 octave_value retval; | |
| 619 | |
| 620 if (args.length () == 3) | |
| 621 { | |
| 622 bool s1_string = args(0).is_string (); | |
| 623 bool s1_cell = args(0).is_cell (); | |
| 624 bool s2_string = args(1).is_string (); | |
| 625 bool s2_cell = args(1).is_cell (); | |
| 626 | |
| 627 // Match only first n strings. | |
| 628 int n = args(2).int_value (); | |
| 629 | |
| 630 if (n <= 0) | |
| 631 { | |
| 632 error ("strncmp: N must be greater than 0"); | |
| 633 return retval; | |
| 634 } | |
| 635 | |
| 636 if (s1_string && s2_string) | |
| 637 { | |
| 638 // The only restriction here is that each string has equal or | |
| 639 // greater than n characters | |
| 640 | |
| 641 const dim_vector dv1 = args(0).dims (); | |
| 642 const dim_vector dv2 = args(1).dims (); | |
| 643 | |
| 644 if (dv1.numel () >= n && dv2.numel () >= n) | |
| 645 { | |
| 646 // Follow Matlab in the sense that the first n characters of | |
| 647 // the two strings (in column major order) need to be the same. | |
| 648 charNDArray s1 = args(0).char_array_value (); | |
| 649 charNDArray s2 = args(1).char_array_value (); | |
| 650 | |
| 651 for (int i = 0; i < n; i++) | |
| 652 { | |
| 653 if (s1(i) != s2(i)) | |
| 654 { | |
| 655 retval = false; | |
| 656 return retval; | |
| 657 } | |
| 658 } | |
| 659 | |
| 660 retval = true; | |
| 661 } | |
| 662 else | |
| 663 retval = false; | |
| 664 } | |
| 665 else if ((s1_string && s2_cell) || (s1_cell && s2_string)) | |
| 666 { | |
| 667 string_vector str; | |
| 668 Cell cell; | |
| 669 int r, c; | |
| 670 | |
| 671 if (s1_string) | |
| 672 { | |
| 673 str = args(0).all_strings (); | |
| 674 r = args(0).rows (); | |
| 675 c = args(0).columns (); | |
| 676 cell = args(1).cell_value (); | |
| 677 } | |
| 678 else | |
| 679 { | |
| 680 str = args(1).all_strings (); | |
| 681 r = args(1).rows (); | |
| 682 c = args(1).columns (); | |
| 683 cell = args(0).cell_value (); | |
| 684 } | |
| 685 | |
| 686 if (r == 1) | |
| 687 { | |
| 688 // Broadcast the string. | |
| 689 | |
| 690 boolNDArray output (cell.dimensions); | |
| 691 | |
| 692 if (c < n) | |
| 693 { | |
| 694 for (int i = 0; i < cell.length (); i++) | |
| 695 output(i) = false; | |
| 696 } | |
| 697 else | |
| 698 { | |
| 699 for (int i = 0; i < cell.length (); i++) | |
| 700 { | |
| 701 if (cell(i).is_string ()) | |
| 702 { | |
| 703 const std::string str2 = cell(i).string_value (); | |
| 704 | |
| 705 if (str2.length() >= n) | |
| 706 { | |
| 707 if (str2.compare (0, n, str[0], 0, n) == 0) | |
| 708 output(i) = true; | |
| 709 else | |
| 710 output(i) = false; | |
| 711 } | |
| 712 else | |
| 713 output(i) = false; | |
| 714 } | |
| 715 } | |
| 716 } | |
| 717 | |
| 718 retval = output; | |
| 719 } | |
| 720 else if (r > 1) | |
| 721 { | |
| 722 if (cell.length () == 1) | |
| 723 { | |
| 724 // Broadcast the cell. | |
| 725 | |
| 726 const dim_vector dv (r, 1); | |
| 727 boolNDArray output (dv); | |
| 728 | |
| 729 if (cell(0).is_string () && c >= n) | |
| 730 { | |
| 731 const std::string str2 = cell(0).string_value (); | |
| 732 | |
| 733 if (str2.length () >= n) | |
| 734 { | |
| 735 for (int i = 0; i < r; i++) | |
| 736 { | |
| 737 if (str[i].compare (0, n, str2, 0, n) == 0) | |
| 738 output(i) = true; | |
| 739 else | |
| 740 output(i) = false; | |
| 741 } | |
| 742 } | |
| 743 else | |
| 744 { | |
| 745 for (int i = 0; i < r; i++) | |
| 746 output(i) = false; | |
| 747 } | |
| 748 } | |
| 749 else | |
| 750 { | |
| 751 for (int i = 0; i < r; i++) | |
| 752 output(i) = false; | |
| 753 } | |
| 754 | |
| 755 retval = output; | |
| 756 } | |
| 757 else | |
| 758 { | |
| 759 // Must match in all dimensions. | |
| 760 | |
| 761 boolNDArray output (cell.dimensions); | |
| 762 | |
| 763 if (cell.numel () == r) | |
| 764 { | |
| 765 for (int i = 0; i < r; i++) | |
| 766 { | |
| 767 output(i) = false; | |
| 768 | |
| 769 if (cell(i).is_string () && c >= n) | |
| 770 { | |
| 771 std::string str2 = cell(i).string_value (); | |
| 772 | |
| 773 if (str2.length () >= n | |
| 774 && str2.compare (0, n, str[i], 0, n) == 0) | |
| 775 output(i) = true; | |
| 776 } | |
| 777 } | |
| 778 | |
| 779 retval = output; | |
| 780 } | |
| 781 else | |
| 782 { | |
| 783 error ("strncmp: the number of rows of the string matrix must match the number of elements in the cell"); | |
| 784 return retval; | |
| 785 } | |
| 786 } | |
| 787 } | |
| 788 } | |
| 789 else if (s1_cell && s2_cell) | |
| 790 { | |
| 791 Cell cell1; | |
| 792 Cell cell2; | |
| 793 | |
| 794 int r1 = args(0).numel (); | |
| 795 int r2; | |
| 796 | |
| 797 if (r1 == 1) | |
| 798 { | |
| 799 // Make the singleton cell2. | |
| 800 | |
| 801 cell1 = args(1).cell_value (); | |
| 802 cell2 = args(0).cell_value (); | |
| 803 r1 = cell1.length (); | |
| 804 r2 = 1; | |
| 805 } | |
| 806 else | |
| 807 { | |
| 808 cell1 = args(0).cell_value (); | |
| 809 cell2 = args(1).cell_value (); | |
| 810 r2 = cell2.length (); | |
| 811 } | |
| 812 | |
| 813 const dim_vector size1 = cell1.dimensions; | |
| 814 const dim_vector size2 = cell2.dimensions; | |
| 815 | |
| 816 boolNDArray output (size1); | |
| 817 | |
| 818 if (r2 == 1) | |
| 819 { | |
| 820 // Broadcast cell2. | |
| 821 | |
| 822 if (! cell2(0).is_string ()) | |
| 823 { | |
| 824 for (int i = 0; i < r1; i++) | |
| 825 output(i) = false; | |
| 826 } | |
| 827 else | |
| 828 { | |
| 829 const std::string str2 = cell2(0).string_value (); | |
| 830 | |
| 831 for (int i = 0; i < r1; i++) | |
| 832 { | |
| 833 if (cell1(i).is_string ()) | |
| 834 { | |
| 835 const std::string str1 = cell1(i).string_value (); | |
| 836 | |
| 837 if (str1.length () >= n && str2.length () >= n | |
| 838 && str1.compare (0, n, str2, 0, n) == 0) | |
| 839 output(i) = true; | |
| 840 else | |
| 841 output(i) = false; | |
| 842 } | |
| 843 else | |
| 844 output(i) = false; | |
| 845 } | |
| 846 } | |
| 847 } | |
| 848 else | |
| 849 { | |
| 850 if (size1 != size2) | |
| 851 { | |
| 852 error ("strncmp: nonconformant cell arrays"); | |
| 853 return retval; | |
| 854 } | |
| 855 | |
| 856 for (int i = 0; i < r1; i++) | |
| 857 { | |
| 858 if (cell1(i).is_string () && cell2(i).is_string ()) | |
| 859 { | |
| 860 const std::string str1 = cell1(i).string_value (); | |
| 861 const std::string str2 = cell2(i).string_value (); | |
| 862 | |
| 863 if (str1.length () >= n && str2.length () >= n | |
| 864 && str1.compare (0, n, str2, 0, n) == 0) | |
| 865 output(i) = true; | |
| 866 else | |
| 867 output(i) = false; | |
| 868 } | |
| 869 else | |
| 870 output(i) = false; | |
| 871 } | |
| 872 } | |
| 873 | |
| 874 retval = output; | |
| 875 } | |
| 876 else | |
| 877 retval = false; | |
| 878 } | |
| 879 else | |
| 880 print_usage (); | |
| 881 | |
| 882 return retval; | |
| 883 } | |
| 884 | |
|
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885 /* |
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886 %!error <Invalid call to strncmp.*> strncmp (); |
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887 %!error <Invalid call to strncmp.*> strncmp ("abc", "def"); |
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888 %!assert (strncmp ("abce", "abc", 3) == 1) |
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889 %!assert (strncmp (100, 100, 1) == 0) |
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890 %!assert (all (strncmp ("abce", {"abcd", "bca", "abc"}, 3) == [1, 0, 1])) |
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891 %!assert (all (strncmp ("abc", {"abcd", "bca", "abc"}, 4) == [0, 0, 0])) |
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892 %!assert (all (strncmp ({"abcd", "bca", "abc"},"abce", 3) == [1, 0, 1])) |
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893 %!assert (all (strncmp ({"abcd", "bca", "abc"},{"abcd", "bca", "abe"}, 3) == [1, 1, 0])) |
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894 */ |
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895 |
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896 |
| 5690 | 897 DEFUN (list_in_columns, args, , |
| 898 "-*- texinfo -*-\n\ | |
| 899 @deftypefn {Built-in Function} {} list_in_columns (@var{arg}, @var{width})\n\ | |
| 900 Return a string containing the elements of @var{arg} listed in\n\ | |
| 901 columns with an overall maximum width of @var{width}. The argument\n\ | |
| 902 @var{arg} must be a cell array of character strings or a character array.\n\ | |
| 903 If @var{width} is not specified, the width of the terminal screen is used.\n\ | |
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904 Newline characters are used to break the lines in the output string.\n\ |
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905 For example:\n\ |
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906 \n\ |
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907 @example\n\ |
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908 @group\n\ |
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909 list_in_columns (@{\"abc\", \"def\", \"ghijkl\", \"mnop\", \"qrs\", \"tuv\"@}, 20)\n\ |
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910 @result{} ans = abc mnop\n\ |
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911 def qrs\n\ |
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912 ghijkl tuv\n\ |
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913 \n\ |
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914 whos ans\n\ |
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915 @result{}\n\ |
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916 Variables in the current scope:\n\ |
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917 \n\ |
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918 Attr Name Size Bytes Class\n\ |
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919 ==== ==== ==== ===== =====\n\ |
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920 ans 1x37 37 char\n\ |
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921 \n\ |
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922 Total is 37 elements using 37 bytes\n\ |
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923 @end group\n\ |
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924 @end example\n\ |
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925 \n\ |
| 5690 | 926 @seealso{terminal_size}\n\ |
| 927 @end deftypefn") | |
| 928 { | |
| 929 octave_value retval; | |
| 930 | |
| 931 int nargin = args.length (); | |
| 932 | |
| 933 if (nargin == 1 || nargin == 2) | |
| 934 { | |
| 935 string_vector s = args(0).all_strings (); | |
| 936 | |
| 937 if (! error_state) | |
| 938 { | |
| 5765 | 939 std::ostringstream buf; |
| 5690 | 940 |
| 941 if (nargin == 1) | |
| 942 // Let list_in_columns query terminal width. | |
| 943 s.list_in_columns (buf); | |
| 944 else | |
| 945 { | |
| 946 int width = args(1).int_value (); | |
| 947 | |
| 948 if (! error_state) | |
| 949 s.list_in_columns (buf, width); | |
| 950 else | |
| 951 error ("list_in_columns: expecting width to be an integer"); | |
| 952 } | |
| 953 | |
| 5765 | 954 retval = buf.str (); |
| 5690 | 955 } |
| 956 else | |
| 957 error ("list_in_columns: expecting cellstr or char array"); | |
| 958 } | |
| 959 else | |
| 5823 | 960 print_usage (); |
| 5690 | 961 |
| 962 return retval; | |
| 963 } | |
| 964 | |
| 807 | 965 /* |
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966 %!error <Invalid call to list_in_columns.*> list_in_columns (); |
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967 %!error <Invalid call to list_in_columns.*> list_in_columns (["abc", "def"], 20, 2); |
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968 %!error <invalid conversion from string to real scalar.*> list_in_columns (["abc", "def"], "a"); |
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969 %!test |
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970 %! input = {"abc", "def", "ghijkl", "mnop", "qrs", "tuv"}; |
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971 %! result = "abc mnop\ndef qrs\nghijkl tuv\n"; |
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972 %! assert (list_in_columns (input, 20) == result); |
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973 %!test |
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974 %! input = ["abc"; "def"; "ghijkl"; "mnop"; "qrs"; "tuv"]; |
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975 %! result = "abc mnop \ndef qrs \nghijkl tuv \n"; |
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976 %! assert (list_in_columns (input, 20) == result); |
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977 */ |
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978 |
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979 /* |
| 807 | 980 ;;; Local Variables: *** |
| 981 ;;; mode: C++ *** | |
| 982 ;;; End: *** | |
| 983 */ |