Mercurial > hg > octave-lyh
annotate src/strfns.cc @ 8462:ebdf1e058d85
Make strvcat an internal function
| author | Thorsten Meyer <thorsten.meyier@gmx.de> |
|---|---|
| date | Mon, 12 Jan 2009 12:22:26 -0500 |
| parents | 9d456730b7a8 |
| children | a74871446af7 |
| rev | line source |
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| 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 |
| 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" |
| 37 #include "gripes.h" | |
| 2366 | 38 #include "ov.h" |
| 1355 | 39 #include "oct-obj.h" |
| 4457 | 40 #include "unwind-prot.h" |
| 807 | 41 #include "utils.h" |
| 42 | |
| 4358 | 43 DEFUN (char, args, , |
| 44 "-*- texinfo -*-\n\ | |
| 45 @deftypefn {Built-in Function} {} char (@var{x})\n\ | |
| 46 @deftypefnx {Built-in Function} {} char (@var{cell_array})\n\ | |
| 47 @deftypefnx {Built-in Function} {} char (@var{s1}, @var{s2}, @dots{})\n\ | |
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48 Create a string array from one or more numeric matrices, character\n\ |
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49 matrices or cell arrays. For numerical input, each element is converted\n\ |
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50 to the corresponding ASCII character. The arguments (and elements of\n\ |
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51 cell array(s)) are concatenated vertically.\n\ |
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52 The returned values are padded with blanks as needed to make each row\n\ |
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53 of the string array have the same length. Empty strings are not removed.\n\ |
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54 For example,\n\ |
| 4358 | 55 \n\ |
| 56 @example\n\ | |
| 57 @group\n\ | |
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58 char ([97, 98, 99], \"\", @{\"98\", \"99\", 100@}, [\"num\", \"bers\"])\n\ |
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59 @result{} [\"abc \"\n\ |
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60 \" \"\n\ |
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61 \"98 \"\n\ |
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62 \"99 \"\n\ |
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63 \"d \"\n\ |
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64 \"numbers\"]\n\ |
| 4358 | 65 @end group\n\ |
| 66 @end example\n\ | |
| 67 \n\ | |
| 68 @end deftypefn") | |
| 69 { | |
| 70 octave_value retval; | |
| 71 | |
| 72 int nargin = args.length (); | |
| 73 | |
| 74 if (nargin == 1) | |
| 5281 | 75 retval = args(0).convert_to_str (true, true, |
| 76 args(0).is_dq_string () ? '"' : '\''); | |
| 4358 | 77 else if (nargin > 1) |
| 78 { | |
| 79 int n_elts = 0; | |
| 80 | |
| 81 int max_len = 0; | |
| 82 | |
| 83 for (int i = 0; i < nargin; i++) | |
| 84 { | |
| 5707 | 85 string_vector s = args(i).all_strings (); |
| 4358 | 86 |
| 87 if (error_state) | |
| 88 { | |
| 4457 | 89 error ("char: unable to convert some args to strings"); |
| 4358 | 90 return retval; |
| 91 } | |
| 92 | |
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93 if (s.length () > 0) |
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94 n_elts += s.length (); |
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95 else |
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96 n_elts += 1; |
| 4358 | 97 |
| 98 int s_max_len = s.max_length (); | |
| 99 | |
| 100 if (s_max_len > max_len) | |
| 101 max_len = s_max_len; | |
| 102 } | |
| 103 | |
| 104 string_vector result (n_elts); | |
| 105 | |
| 106 int k = 0; | |
| 107 | |
| 108 for (int i = 0; i < nargin; i++) | |
| 109 { | |
| 5707 | 110 string_vector s = args(i).all_strings (); |
| 4358 | 111 |
| 112 int n = s.length (); | |
| 113 | |
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114 if (n > 0) |
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115 { |
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116 for (int j = 0; j < n; j++) |
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117 { |
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118 std::string t = s[j]; |
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119 int t_len = t.length (); |
| 4358 | 120 |
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121 if (max_len > t_len) |
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122 t += std::string (max_len - t_len, ' '); |
| 4358 | 123 |
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124 result[k++] = t; |
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125 } |
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126 } |
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127 else |
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128 { |
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129 result[k++] = std::string (max_len, ' '); |
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130 } |
| 4358 | 131 } |
| 132 | |
| 5280 | 133 retval = octave_value (result, '\''); |
| 4358 | 134 } |
| 135 else | |
| 5823 | 136 print_usage (); |
| 4358 | 137 |
| 138 return retval; | |
| 139 } | |
| 140 | |
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141 /* |
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142 %!error <Invalid call to char> char() |
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143 %!assert (char (100) == "d"); |
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144 %!assert (all(char (100,100) == ["d";"d"])); |
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145 %!assert (all(char ({100,100}) == ["d";"d"])); |
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146 %!assert (all(char ([100,100]) == ["dd"])); |
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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}) == ["d";" ";"d"])) |
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150 %!assert (all(char ({100,{100, {""}}}) == ["d";"d";" "])) |
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151 %!assert (all(char (["a";"be"], {"c", 100}) == ["a";"be";"c";"d"])) |
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152 %!assert(strcmp (char ("a", "bb", "ccc"), ["a "; "bb "; "ccc"])); |
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153 */ |
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154 |
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155 DEFUN (strvcat, args, , |
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156 "-*- texinfo -*-\n\ |
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157 @deftypefn {Built-in Function} {} strvcat (@var{x})\n\ |
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158 @deftypefnx {Built-in Function} {} strvcat (@var{cell_array})\n\ |
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159 @deftypefnx {Built-in Function} {} strvcat (@var{s1}, @var{s2}, @dots{})\n\ |
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160 Create a character array from one or more numeric matrices, character\n\ |
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161 matrices or cell arrays. For numerical input, each element is converted\n\ |
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162 to the corresponding ASCII character. The arguments (and elements of\n\ |
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163 cell array(s)) are concatenated vertically.\n\ |
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164 The returned values are padded with blanks as needed to make each row\n\ |
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165 of the string array have the same length. Unlike @code{char}, empty\n\ |
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166 strings are removed.\n\ |
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167 For example,\n\ |
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168 \n\ |
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169 @example\n\ |
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170 @group\n\ |
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171 strvcat ([97, 98, 99], \"\", @{\"98\", \"99\", 100@}, [\"num\", \"bers\"])\n\ |
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172 @result{} [\"abc \"\n\ |
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173 \"98 \"\n\ |
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174 \"99 \"\n\ |
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175 \"d \"\n\ |
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176 \"numbers\"]\n\ |
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177 @end group\n\ |
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178 @end example\n\ |
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179 \n\ |
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180 @seealso{char, strcat, cstrcat}\n\ |
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181 @end deftypefn") |
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182 { |
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183 octave_value retval; |
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184 |
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185 int nargin = args.length (); |
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186 |
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187 if (nargin > 0) |
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188 { |
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189 int n_elts = 0; |
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190 |
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191 int max_len = 0; |
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192 |
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193 for (int i = 0; i < nargin; i++) |
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194 { |
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195 string_vector s = args(i).all_strings (); |
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196 |
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197 if (error_state) |
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198 { |
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199 error ("strvcat: unable to convert some args to strings"); |
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200 return retval; |
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201 } |
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202 |
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203 int n = s.length (); |
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204 |
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205 // do not count empty strings in calculation of number of elements |
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206 if (n > 0) |
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207 { |
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208 for (int j = 0; j < n; j++) |
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209 { |
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210 if (s[j].length () > 0) |
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211 n_elts++; |
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212 } |
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213 } |
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214 |
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215 int s_max_len = s.max_length (); |
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216 |
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217 if (s_max_len > max_len) |
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218 max_len = s_max_len; |
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219 } |
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220 |
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221 string_vector result (n_elts); |
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222 |
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223 int k = 0; |
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224 |
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225 for (int i = 0; i < nargin; i++) |
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226 { |
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227 string_vector s = args(i).all_strings (); |
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228 |
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229 int n = s.length (); |
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230 |
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231 if (n > 0) |
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232 { |
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233 for (int j = 0; j < n; j++) |
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234 { |
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235 std::string t = s[j]; |
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236 if (t.length () > 0) |
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237 { |
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238 int t_len = t.length (); |
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239 |
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240 if (max_len > t_len) |
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241 t += std::string (max_len - t_len, ' '); |
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242 |
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243 result[k++] = t; |
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244 } |
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245 } |
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246 } |
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247 } |
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248 |
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249 retval = octave_value (result, '\''); |
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250 } |
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251 else |
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252 print_usage (); |
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253 |
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254 return retval; |
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255 } |
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256 |
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257 /* |
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258 %!error <Invalid call to strvcat> strvcat() |
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259 %!assert (strvcat (""), ""); |
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260 %!assert (strvcat (100) == "d"); |
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261 %!assert (all(strvcat (100,100) == ["d";"d"])); |
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262 %!assert (all(strvcat ({100,100}) == ["d";"d"])); |
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263 %!assert (all(strvcat ([100,100]) == ["dd"])); |
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264 %!assert (all(strvcat ({100,{100}}) == ["d";"d"])); |
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265 %!assert (all(strvcat (100, [], 100) == ["d";"d"])) |
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266 %!assert (all(strvcat ({100, [], 100}) == ["d";"d"])) |
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267 %!assert (all(strvcat ({100,{100, {""}}}) == ["d";"d"])) |
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268 %!assert (all(strvcat (["a";"be"], {"c", 100}) == ["a";"be";"c";"d"])) |
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269 %!assert(strcmp (strvcat ("a", "bb", "ccc"), ["a "; "bb "; "ccc"])); |
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270 */ |
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271 |
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272 |
| 4535 | 273 DEFUN (ischar, args, , |
| 3361 | 274 "-*- texinfo -*-\n\ |
| 4535 | 275 @deftypefn {Built-in Function} {} ischar (@var{a})\n\ |
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276 Return 1 if @var{a} is a character array. Otherwise, return 0.\n\ |
| 3361 | 277 @end deftypefn") |
| 807 | 278 { |
| 4233 | 279 octave_value retval; |
| 807 | 280 |
| 281 int nargin = args.length (); | |
| 282 | |
| 283 if (nargin == 1 && args(0).is_defined ()) | |
| 4233 | 284 retval = args(0).is_string (); |
| 807 | 285 else |
| 5823 | 286 print_usage (); |
| 807 | 287 |
| 288 return retval; | |
| 289 } | |
| 290 | |
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291 /* |
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292 |
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293 %!assert (ischar ("a"), logical (1)); |
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294 %!assert (ischar (["ab";"cd"]), logical (1)); |
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295 %!assert (ischar ({"ab"}), logical (0)); |
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296 %!assert (ischar (1), logical (0)); |
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297 %!error <Invalid call to ischar.*> ischar (); |
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298 |
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299 */ |
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300 |
| 5415 | 301 DEFUN (strcmp, args, , |
| 302 "-*- texinfo -*-\n\ | |
| 6678 | 303 @deftypefn {Built-in Function} {} strcmp (@var{s1}, @var{s2})\n\ |
| 5415 | 304 Return 1 if the character strings @var{s1} and @var{s2} are the same,\n\ |
| 305 and 0 otherwise.\n\ | |
| 5674 | 306 \n\ |
| 307 If either @var{s1} or @var{s2} is a cell array of strings, then an array\n\ | |
| 308 of the same size is returned, containing the values described above for\n\ | |
| 309 every member of the cell array. The other argument may also be a cell\n\ | |
| 310 array of strings (of the same size or with only one element), char matrix\n\ | |
| 311 or character string.\n\ | |
| 312 \n\ | |
| 313 @strong{Caution:} For compatibility with @sc{Matlab}, Octave's strcmp\n\ | |
| 314 function returns 1 if the character strings are equal, and 0 otherwise.\n\ | |
| 315 This is just the opposite of the corresponding C library function.\n\ | |
| 316 @seealso{strcmpi, strncmp, strncmpi}\n\ | |
| 5415 | 317 @end deftypefn") |
| 318 { | |
| 5531 | 319 octave_value retval; |
| 5415 | 320 |
| 5416 | 321 if (args.length () == 2) |
| 322 { | |
| 323 bool s1_string = args(0).is_string (); | |
| 324 bool s1_cell = args(0).is_cell (); | |
| 325 bool s2_string = args(1).is_string (); | |
| 326 bool s2_cell = args(1).is_cell (); | |
| 5415 | 327 |
| 5416 | 328 if (s1_string && s2_string) |
| 329 { | |
| 330 // Must match exactly in all dimensions. | |
| 331 | |
| 332 const dim_vector dv1 = args(0).dims (); | |
| 333 const dim_vector dv2 = args(1).dims (); | |
| 5415 | 334 |
| 5416 | 335 if (dv1.length () == dv2.length ()) |
| 336 { | |
| 337 for (int i = 0; i < dv1.length (); i++) | |
| 338 { | |
| 339 if (dv1(i) != dv2(i)) | |
| 340 { | |
| 341 retval = false; | |
| 342 return retval; | |
| 343 } | |
| 344 } | |
| 5415 | 345 |
| 5416 | 346 if (dv1(0) == 0) |
| 347 retval = true; | |
| 348 else | |
| 349 { | |
| 350 charNDArray s1 = args(0).char_array_value (); | |
| 351 charNDArray s2 = args(1).char_array_value (); | |
| 5415 | 352 |
| 5416 | 353 for (int i = 0; i < dv1.numel (); i++) |
| 354 { | |
| 355 if (s1(i) != s2(i)) | |
| 356 { | |
| 357 retval = false; | |
| 358 return retval; | |
| 359 } | |
| 360 } | |
| 5415 | 361 |
| 5416 | 362 retval = true; |
| 363 } | |
| 5415 | 364 } |
| 365 } | |
| 5416 | 366 else if ((s1_string && s2_cell) || (s1_cell && s2_string)) |
| 5415 | 367 { |
| 5416 | 368 string_vector str; |
| 369 Cell cell; | |
| 370 int r; | |
| 5415 | 371 |
| 5416 | 372 if (s1_string) |
| 373 { | |
| 374 str = args(0).all_strings (); | |
| 375 r = args(0).rows (); | |
| 376 cell = args(1).cell_value (); | |
| 377 } | |
| 378 else | |
| 379 { | |
| 380 str = args(1).all_strings (); | |
| 381 r = args(1).rows (); | |
| 382 cell = args(0).cell_value (); | |
| 383 } | |
| 384 | |
| 5862 | 385 if (r == 0 || r == 1) |
| 5416 | 386 { |
| 387 // Broadcast the string. | |
| 388 | |
| 389 boolNDArray output (cell.dimensions); | |
| 5415 | 390 |
| 5862 | 391 std::string s = r == 0 ? std::string () : str[0]; |
| 392 | |
| 5416 | 393 for (int i = 0; i < cell.length (); i++) |
| 6250 | 394 { |
| 395 if (cell(i).is_string ()) | |
| 396 output(i) = (cell(i).string_value () == s); | |
| 397 else | |
| 398 output(i) = false; | |
| 399 } | |
| 5416 | 400 |
| 401 retval = output; | |
| 402 } | |
| 403 else if (r > 1) | |
| 5415 | 404 { |
| 5416 | 405 if (cell.length () == 1) |
| 5415 | 406 { |
| 5416 | 407 // Broadcast the cell. |
| 408 | |
| 409 const dim_vector dv (r, 1); | |
| 410 boolNDArray output (dv); | |
| 411 | |
| 412 if (cell(0).is_string ()) | |
| 413 { | |
| 414 const std::string str2 = cell(0).string_value (); | |
| 5415 | 415 |
| 5416 | 416 for (int i = 0; i < r; i++) |
| 417 output(i) = (str[i] == str2); | |
| 418 } | |
| 419 else | |
| 420 { | |
| 421 for (int i = 0; i < r; i++) | |
| 422 output(i) = false; | |
| 423 } | |
| 424 | |
| 425 retval = output; | |
| 5415 | 426 } |
| 427 else | |
| 428 { | |
| 5416 | 429 // Must match in all dimensions. |
| 430 | |
| 431 boolNDArray output (cell.dimensions); | |
| 5415 | 432 |
| 5416 | 433 if (cell.length () == r) |
| 434 { | |
| 435 for (int i = 0; i < r; i++) | |
| 6250 | 436 { |
| 437 if (cell(i).is_string ()) | |
| 438 output(i) = (str[i] == cell(i).string_value ()); | |
| 439 else | |
| 440 output(i) = false; | |
| 441 } | |
| 5415 | 442 |
| 5416 | 443 retval = output; |
| 444 } | |
| 445 else | |
| 446 retval = false; | |
| 5415 | 447 } |
| 448 } | |
| 449 } | |
| 5416 | 450 else if (s1_cell && s2_cell) |
| 5415 | 451 { |
| 5416 | 452 Cell cell1; |
| 453 Cell cell2; | |
| 5415 | 454 |
| 5416 | 455 int r1 = args(0).numel (); |
| 456 int r2; | |
| 457 | |
| 458 if (r1 == 1) | |
| 459 { | |
| 460 // Make the singleton cell2. | |
| 5415 | 461 |
| 5416 | 462 cell1 = args(1).cell_value (); |
| 463 cell2 = args(0).cell_value (); | |
| 464 r1 = cell1.length (); | |
| 465 r2 = 1; | |
| 466 } | |
| 467 else | |
| 468 { | |
| 469 cell1 = args(0).cell_value (); | |
| 470 cell2 = args(1).cell_value (); | |
| 471 r2 = cell2.length (); | |
| 472 } | |
| 5415 | 473 |
| 5416 | 474 const dim_vector size1 = cell1.dimensions; |
| 475 const dim_vector size2 = cell2.dimensions; | |
| 476 | |
| 477 boolNDArray output (size1); | |
| 478 | |
| 479 if (r2 == 1) | |
| 480 { | |
| 481 // Broadcast cell2. | |
| 482 | |
| 483 if (! cell2(0).is_string ()) | |
| 5415 | 484 { |
| 5416 | 485 for (int i = 0; i < r1; i++) |
| 486 output(i) = false; | |
| 5415 | 487 } |
| 488 else | |
| 5416 | 489 { |
| 490 const std::string str2 = cell2(0).string_value (); | |
| 491 | |
| 492 for (int i = 0; i < r1; i++) | |
| 493 { | |
| 494 if (cell1(i).is_string ()) | |
| 495 { | |
| 496 const std::string str1 = cell1(i).string_value (); | |
| 497 output(i) = (str1 == str2); | |
| 498 } | |
| 499 else | |
| 500 output(i) = false; | |
| 501 } | |
| 502 } | |
| 5415 | 503 } |
| 5416 | 504 else |
| 505 { | |
| 506 if (size1 != size2) | |
| 507 { | |
| 508 error ("strcmp: nonconformant cell arrays"); | |
| 509 return retval; | |
| 510 } | |
| 511 | |
| 512 for (int i = 0; i < r1; i++) | |
| 513 { | |
| 514 if (cell1(i).is_string () && cell2(i).is_string ()) | |
| 515 { | |
| 516 const std::string str1 = cell1(i).string_value (); | |
| 517 const std::string str2 = cell2(i).string_value (); | |
| 518 output(i) = (str1 == str2); | |
| 519 } | |
| 520 else | |
| 521 output(i) = false; | |
| 522 } | |
| 523 } | |
| 524 | |
| 525 retval = output; | |
| 5415 | 526 } |
| 5531 | 527 else |
| 528 retval = false; | |
| 5415 | 529 } |
| 5416 | 530 else |
| 5823 | 531 print_usage (); |
| 5415 | 532 |
| 533 return retval; | |
| 534 } | |
| 535 | |
| 5862 | 536 /* |
| 537 %!shared x | |
| 538 %! x = char (zeros (0, 2)); | |
| 539 %!assert (strcmp ('', x) == false); | |
| 540 %!assert (strcmp (x, '') == false); | |
| 541 %!assert (strcmp (x, x) == true); | |
| 5911 | 542 ## %!assert (strcmp ({''}, x) == false); |
| 543 ## %!assert (strcmp ({x}, '') == false); | |
| 544 ## %!assert (strcmp ({x}, x) == true); | |
| 545 ## %!assert (strcmp ('', {x}) == false); | |
| 546 ## %!assert (strcmp (x, {''}) == false); | |
| 547 ## %!assert (strcmp (x, {x}) == true); | |
| 548 ## %!assert (all (strcmp ({x; x}, '') == [false; false])); | |
| 549 ## %!assert (all (strcmp ({x; x}, {''}) == [false; false])); | |
| 550 ## %!assert (all (strcmp ('', {x; x}) == [false; false])); | |
| 551 ## %!assert (all (strcmp ({''}, {x; x}) == [false; false])); | |
| 5862 | 552 %!assert (strcmp ({'foo'}, x) == false); |
| 553 %!assert (strcmp ({'foo'}, 'foo') == true); | |
| 554 %!assert (strcmp ({'foo'}, x) == false); | |
| 555 %!assert (strcmp (x, {'foo'}) == false); | |
| 556 %!assert (strcmp ('foo', {'foo'}) == true); | |
| 557 %!assert (strcmp (x, {'foo'}) == false); | |
| 558 %!shared y | |
| 559 %! y = char (zeros (2, 0)); | |
| 560 %!assert (strcmp ('', y) == false); | |
| 561 %!assert (strcmp (y, '') == false); | |
| 562 %!assert (strcmp (y, y) == true); | |
| 563 %!assert (all (strcmp ({''}, y) == [true; true])); | |
| 564 %!assert (strcmp ({y}, '') == true); | |
| 565 %!assert (all (strcmp ({y}, y) == [true; true])); | |
| 566 %!assert (all (strcmp ('', {y}) == [true; true])); | |
| 567 %!assert (all (strcmp (y, {''}) == [true; true])); | |
| 568 %!assert (all (strcmp (y, {y}) == [true; true])); | |
| 5911 | 569 ## %!assert (all (strcmp ({y; y}, '') == [false; false])); |
| 570 ## %!assert (all (strcmp ({y; y}, {''}) == [false; false])); | |
| 571 ## %!assert (all (strcmp ('', {y; y}) == [false; false])); | |
| 572 ## %!assert (all (strcmp ({''}, {y; y}) == [false; false])); | |
| 5862 | 573 %!assert (all (strcmp ({'foo'}, y) == [false; false])); |
| 574 %!assert (all (strcmp ({'foo'}, y) == [false; false])); | |
| 575 %!assert (all (strcmp (y, {'foo'}) == [false; false])); | |
| 576 %!assert (all (strcmp (y, {'foo'}) == [false; false])); | |
| 577 */ | |
| 578 | |
| 6250 | 579 DEFUN (strncmp, args, , |
| 580 "-*- texinfo -*-\n\ | |
| 6678 | 581 @deftypefn {Built-in Function} {} strncmp (@var{s1}, @var{s2}, @var{n})\n\ |
| 6250 | 582 Return 1 if the first @var{n} characters of strings @var{s1} and @var{s2} are the same,\n\ |
| 583 and 0 otherwise.\n\ | |
| 584 \n\ | |
| 585 @example\n\ | |
| 586 @group\n\ | |
| 587 strncmp (\"abce\", \"abcd\", 3)\n\ | |
| 588 @result{} 1\n\ | |
| 589 @end group\n\ | |
| 590 @end example\n\ | |
| 591 \n\ | |
| 592 If either @var{s1} or @var{s2} is a cell array of strings, then an array\n\ | |
| 593 of the same size is returned, containing the values described above for\n\ | |
| 594 every member of the cell array. The other argument may also be a cell\n\ | |
| 595 array of strings (of the same size or with only one element), char matrix\n\ | |
| 596 or character string.\n\ | |
| 597 \n\ | |
| 598 @example\n\ | |
| 599 @group\n\ | |
| 6256 | 600 strncmp (\"abce\", @{\"abcd\", \"bca\", \"abc\"@}, 3)\n\ |
| 6250 | 601 @result{} [1, 0, 1]\n\ |
| 602 @end group\n\ | |
| 603 @end example\n\ | |
| 604 \n\ | |
| 605 @strong{Caution:} For compatibility with @sc{Matlab}, Octave's strncmp\n\ | |
| 606 function returns 1 if the character strings are equal, and 0 otherwise.\n\ | |
| 607 This is just the opposite of the corresponding C library function.\n\ | |
| 608 @seealso{strncmpi, strcmp, strcmpi}\n\ | |
| 609 @end deftypefn") | |
| 610 { | |
| 611 octave_value retval; | |
| 612 | |
| 613 if (args.length () == 3) | |
| 614 { | |
| 615 bool s1_string = args(0).is_string (); | |
| 616 bool s1_cell = args(0).is_cell (); | |
| 617 bool s2_string = args(1).is_string (); | |
| 618 bool s2_cell = args(1).is_cell (); | |
| 619 | |
| 620 // Match only first n strings. | |
| 621 int n = args(2).int_value (); | |
| 622 | |
| 623 if (n <= 0) | |
| 624 { | |
| 625 error ("strncmp: N must be greater than 0"); | |
| 626 return retval; | |
| 627 } | |
| 628 | |
| 629 if (s1_string && s2_string) | |
| 630 { | |
| 631 // The only restriction here is that each string has equal or | |
| 632 // greater than n characters | |
| 633 | |
| 634 const dim_vector dv1 = args(0).dims (); | |
| 635 const dim_vector dv2 = args(1).dims (); | |
| 636 | |
| 637 if (dv1.numel () >= n && dv2.numel () >= n) | |
| 638 { | |
| 639 // Follow Matlab in the sense that the first n characters of | |
| 640 // the two strings (in column major order) need to be the same. | |
| 641 charNDArray s1 = args(0).char_array_value (); | |
| 642 charNDArray s2 = args(1).char_array_value (); | |
| 643 | |
| 644 for (int i = 0; i < n; i++) | |
| 645 { | |
| 646 if (s1(i) != s2(i)) | |
| 647 { | |
| 648 retval = false; | |
| 649 return retval; | |
| 650 } | |
| 651 } | |
| 652 | |
| 653 retval = true; | |
| 654 } | |
| 655 else | |
| 656 retval = false; | |
| 657 } | |
| 658 else if ((s1_string && s2_cell) || (s1_cell && s2_string)) | |
| 659 { | |
| 660 string_vector str; | |
| 661 Cell cell; | |
| 662 int r, c; | |
| 663 | |
| 664 if (s1_string) | |
| 665 { | |
| 666 str = args(0).all_strings (); | |
| 667 r = args(0).rows (); | |
| 668 c = args(0).columns (); | |
| 669 cell = args(1).cell_value (); | |
| 670 } | |
| 671 else | |
| 672 { | |
| 673 str = args(1).all_strings (); | |
| 674 r = args(1).rows (); | |
| 675 c = args(1).columns (); | |
| 676 cell = args(0).cell_value (); | |
| 677 } | |
| 678 | |
| 679 if (r == 1) | |
| 680 { | |
| 681 // Broadcast the string. | |
| 682 | |
| 683 boolNDArray output (cell.dimensions); | |
| 684 | |
| 685 if (c < n) | |
| 686 { | |
| 687 for (int i = 0; i < cell.length (); i++) | |
| 688 output(i) = false; | |
| 689 } | |
| 690 else | |
| 691 { | |
| 692 for (int i = 0; i < cell.length (); i++) | |
| 693 { | |
| 694 if (cell(i).is_string ()) | |
| 695 { | |
| 696 const std::string str2 = cell(i).string_value (); | |
| 697 | |
| 698 if (str2.length() >= n) | |
| 699 { | |
| 700 if (str2.compare (0, n, str[0], 0, n) == 0) | |
| 701 output(i) = true; | |
| 702 else | |
| 703 output(i) = false; | |
| 704 } | |
| 705 else | |
| 706 output(i) = false; | |
| 707 } | |
| 708 } | |
| 709 } | |
| 710 | |
| 711 retval = output; | |
| 712 } | |
| 713 else if (r > 1) | |
| 714 { | |
| 715 if (cell.length () == 1) | |
| 716 { | |
| 717 // Broadcast the cell. | |
| 718 | |
| 719 const dim_vector dv (r, 1); | |
| 720 boolNDArray output (dv); | |
| 721 | |
| 722 if (cell(0).is_string () && c >= n) | |
| 723 { | |
| 724 const std::string str2 = cell(0).string_value (); | |
| 725 | |
| 726 if (str2.length () >= n) | |
| 727 { | |
| 728 for (int i = 0; i < r; i++) | |
| 729 { | |
| 730 if (str[i].compare (0, n, str2, 0, n) == 0) | |
| 731 output(i) = true; | |
| 732 else | |
| 733 output(i) = false; | |
| 734 } | |
| 735 } | |
| 736 else | |
| 737 { | |
| 738 for (int i = 0; i < r; i++) | |
| 739 output(i) = false; | |
| 740 } | |
| 741 } | |
| 742 else | |
| 743 { | |
| 744 for (int i = 0; i < r; i++) | |
| 745 output(i) = false; | |
| 746 } | |
| 747 | |
| 748 retval = output; | |
| 749 } | |
| 750 else | |
| 751 { | |
| 752 // Must match in all dimensions. | |
| 753 | |
| 754 boolNDArray output (cell.dimensions); | |
| 755 | |
| 756 if (cell.numel () == r) | |
| 757 { | |
| 758 for (int i = 0; i < r; i++) | |
| 759 { | |
| 760 output(i) = false; | |
| 761 | |
| 762 if (cell(i).is_string () && c >= n) | |
| 763 { | |
| 764 std::string str2 = cell(i).string_value (); | |
| 765 | |
| 766 if (str2.length () >= n | |
| 767 && str2.compare (0, n, str[i], 0, n) == 0) | |
| 768 output(i) = true; | |
| 769 } | |
| 770 } | |
| 771 | |
| 772 retval = output; | |
| 773 } | |
| 774 else | |
| 775 { | |
| 776 error ("strncmp: the number of rows of the string matrix must match the number of elements in the cell"); | |
| 777 return retval; | |
| 778 } | |
| 779 } | |
| 780 } | |
| 781 } | |
| 782 else if (s1_cell && s2_cell) | |
| 783 { | |
| 784 Cell cell1; | |
| 785 Cell cell2; | |
| 786 | |
| 787 int r1 = args(0).numel (); | |
| 788 int r2; | |
| 789 | |
| 790 if (r1 == 1) | |
| 791 { | |
| 792 // Make the singleton cell2. | |
| 793 | |
| 794 cell1 = args(1).cell_value (); | |
| 795 cell2 = args(0).cell_value (); | |
| 796 r1 = cell1.length (); | |
| 797 r2 = 1; | |
| 798 } | |
| 799 else | |
| 800 { | |
| 801 cell1 = args(0).cell_value (); | |
| 802 cell2 = args(1).cell_value (); | |
| 803 r2 = cell2.length (); | |
| 804 } | |
| 805 | |
| 806 const dim_vector size1 = cell1.dimensions; | |
| 807 const dim_vector size2 = cell2.dimensions; | |
| 808 | |
| 809 boolNDArray output (size1); | |
| 810 | |
| 811 if (r2 == 1) | |
| 812 { | |
| 813 // Broadcast cell2. | |
| 814 | |
| 815 if (! cell2(0).is_string ()) | |
| 816 { | |
| 817 for (int i = 0; i < r1; i++) | |
| 818 output(i) = false; | |
| 819 } | |
| 820 else | |
| 821 { | |
| 822 const std::string str2 = cell2(0).string_value (); | |
| 823 | |
| 824 for (int i = 0; i < r1; i++) | |
| 825 { | |
| 826 if (cell1(i).is_string ()) | |
| 827 { | |
| 828 const std::string str1 = cell1(i).string_value (); | |
| 829 | |
| 830 if (str1.length () >= n && str2.length () >= n | |
| 831 && str1.compare (0, n, str2, 0, n) == 0) | |
| 832 output(i) = true; | |
| 833 else | |
| 834 output(i) = false; | |
| 835 } | |
| 836 else | |
| 837 output(i) = false; | |
| 838 } | |
| 839 } | |
| 840 } | |
| 841 else | |
| 842 { | |
| 843 if (size1 != size2) | |
| 844 { | |
| 845 error ("strncmp: nonconformant cell arrays"); | |
| 846 return retval; | |
| 847 } | |
| 848 | |
| 849 for (int i = 0; i < r1; i++) | |
| 850 { | |
| 851 if (cell1(i).is_string () && cell2(i).is_string ()) | |
| 852 { | |
| 853 const std::string str1 = cell1(i).string_value (); | |
| 854 const std::string str2 = cell2(i).string_value (); | |
| 855 | |
| 856 if (str1.length () >= n && str2.length () >= n | |
| 857 && str1.compare (0, n, str2, 0, n) == 0) | |
| 858 output(i) = true; | |
| 859 else | |
| 860 output(i) = false; | |
| 861 } | |
| 862 else | |
| 863 output(i) = false; | |
| 864 } | |
| 865 } | |
| 866 | |
| 867 retval = output; | |
| 868 } | |
| 869 else | |
| 870 retval = false; | |
| 871 } | |
| 872 else | |
| 873 print_usage (); | |
| 874 | |
| 875 return retval; | |
| 876 } | |
| 877 | |
|
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878 /* |
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879 %!error <Invalid call to strncmp.*> strncmp (); |
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880 %!error <Invalid call to strncmp.*> strncmp ("abc", "def"); |
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881 %!assert (strncmp ("abce", "abc", 3) == 1) |
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882 %!assert (strncmp (100, 100, 1) == 0) |
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883 %!assert (all (strncmp ("abce", {"abcd", "bca", "abc"}, 3) == [1, 0, 1])) |
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884 %!assert (all (strncmp ("abc", {"abcd", "bca", "abc"}, 4) == [0, 0, 0])) |
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885 %!assert (all (strncmp ({"abcd", "bca", "abc"},"abce", 3) == [1, 0, 1])) |
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886 %!assert (all (strncmp ({"abcd", "bca", "abc"},{"abcd", "bca", "abe"}, 3) == [1, 1, 0])) |
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887 */ |
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888 |
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889 |
| 5690 | 890 DEFUN (list_in_columns, args, , |
| 891 "-*- texinfo -*-\n\ | |
| 892 @deftypefn {Built-in Function} {} list_in_columns (@var{arg}, @var{width})\n\ | |
| 893 Return a string containing the elements of @var{arg} listed in\n\ | |
| 894 columns with an overall maximum width of @var{width}. The argument\n\ | |
| 895 @var{arg} must be a cell array of character strings or a character array.\n\ | |
| 896 If @var{width} is not specified, the width of the terminal screen is used.\n\ | |
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897 Newline characters are used to break the lines in the output string.\n\ |
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898 For example:\n\ |
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899 \n\ |
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900 @example\n\ |
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901 @group\n\ |
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902 list_in_columns (@{\"abc\", \"def\", \"ghijkl\", \"mnop\", \"qrs\", \"tuv\"@}, 20)\n\ |
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903 @result{} ans = abc mnop\n\ |
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904 def qrs\n\ |
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905 ghijkl tuv\n\ |
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906 \n\ |
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907 whos ans\n\ |
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908 @result{}\n\ |
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909 Variables in the current scope:\n\ |
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910 \n\ |
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911 Attr Name Size Bytes Class\n\ |
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912 ==== ==== ==== ===== =====\n\ |
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913 ans 1x37 37 char\n\ |
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914 \n\ |
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915 Total is 37 elements using 37 bytes\n\ |
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916 @end group\n\ |
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917 @end example\n\ |
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918 \n\ |
| 5690 | 919 @seealso{terminal_size}\n\ |
| 920 @end deftypefn") | |
| 921 { | |
| 922 octave_value retval; | |
| 923 | |
| 924 int nargin = args.length (); | |
| 925 | |
| 926 if (nargin == 1 || nargin == 2) | |
| 927 { | |
| 928 string_vector s = args(0).all_strings (); | |
| 929 | |
| 930 if (! error_state) | |
| 931 { | |
| 5765 | 932 std::ostringstream buf; |
| 5690 | 933 |
| 934 if (nargin == 1) | |
| 935 // Let list_in_columns query terminal width. | |
| 936 s.list_in_columns (buf); | |
| 937 else | |
| 938 { | |
| 939 int width = args(1).int_value (); | |
| 940 | |
| 941 if (! error_state) | |
| 942 s.list_in_columns (buf, width); | |
| 943 else | |
| 944 error ("list_in_columns: expecting width to be an integer"); | |
| 945 } | |
| 946 | |
| 5765 | 947 retval = buf.str (); |
| 5690 | 948 } |
| 949 else | |
| 950 error ("list_in_columns: expecting cellstr or char array"); | |
| 951 } | |
| 952 else | |
| 5823 | 953 print_usage (); |
| 5690 | 954 |
| 955 return retval; | |
| 956 } | |
| 957 | |
| 807 | 958 /* |
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959 %!error <Invalid call to list_in_columns.*> list_in_columns (); |
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960 %!error <Invalid call to list_in_columns.*> list_in_columns (["abc", "def"], 20, 2); |
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961 %!error <invalid conversion from string to real scalar.*> list_in_columns (["abc", "def"], "a"); |
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962 %!test |
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963 %! input = {"abc", "def", "ghijkl", "mnop", "qrs", "tuv"}; |
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964 %! result = "abc mnop\ndef qrs\nghijkl tuv\n"; |
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965 %! assert (list_in_columns (input, 20) == result); |
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966 %!test |
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967 %! input = ["abc"; "def"; "ghijkl"; "mnop"; "qrs"; "tuv"]; |
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968 %! result = "abc mnop \ndef qrs \nghijkl tuv \n"; |
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969 %! assert (list_in_columns (input, 20) == result); |
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970 */ |
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971 |
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972 /* |
| 807 | 973 ;;; Local Variables: *** |
| 974 ;;; mode: C++ *** | |
| 975 ;;; End: *** | |
| 976 */ |