| 1 | ;;+----------------------------------------------------------------------------- |
|---|
| 2 | ;;+ Isidorus |
|---|
| 3 | ;;+ (c) 2008-2010 Marc Kuester, Christoph Ludwig, Lukas Georgieff |
|---|
| 4 | ;;+ |
|---|
| 5 | ;;+ Isidorus is freely distributable under the LLGPL license. |
|---|
| 6 | ;;+ You can find a detailed description in trunk/docs/LLGPL-LICENSE.txt and |
|---|
| 7 | ;;+ trunk/docs/LGPL-LICENSE.txt. |
|---|
| 8 | ;;+----------------------------------------------------------------------------- |
|---|
| 9 | |
|---|
| 10 | (defpackage :base-tools |
|---|
| 11 | (:use :cl) |
|---|
| 12 | (:nicknames :tools) |
|---|
| 13 | (:export :push-string |
|---|
| 14 | :concat |
|---|
| 15 | :when-do |
|---|
| 16 | :string-replace |
|---|
| 17 | :remove-null |
|---|
| 18 | :full-path |
|---|
| 19 | :trim-whitespace-left |
|---|
| 20 | :trim-whitespace-right |
|---|
| 21 | :trim-whitespace |
|---|
| 22 | :string-starts-with |
|---|
| 23 | :string-ends-with |
|---|
| 24 | :string-ends-with-one-of |
|---|
| 25 | :string-starts-with-char |
|---|
| 26 | :string-starts-with-one-of |
|---|
| 27 | :string-until |
|---|
| 28 | :string-after |
|---|
| 29 | :search-first |
|---|
| 30 | :search-first-ignore-literals |
|---|
| 31 | :concatenate-uri |
|---|
| 32 | :absolute-uri-p |
|---|
| 33 | :string-starts-with-digit |
|---|
| 34 | :string-after-number |
|---|
| 35 | :separate-leading-digits |
|---|
| 36 | :white-space |
|---|
| 37 | :white-space-p |
|---|
| 38 | :escape-string |
|---|
| 39 | :search-first-unclosed-paranthesis |
|---|
| 40 | :search-first-unopened-paranthesis |
|---|
| 41 | :in-literal-string-p |
|---|
| 42 | :find-literal-end |
|---|
| 43 | :get-literal-quotation |
|---|
| 44 | :get-literal |
|---|
| 45 | :return-if-starts-with |
|---|
| 46 | :prefix-of-uri |
|---|
| 47 | :get-store-spec |
|---|
| 48 | :open-tm-store |
|---|
| 49 | :close-tm-store |
|---|
| 50 | :read-file-to-string)) |
|---|
| 51 | |
|---|
| 52 | (in-package :base-tools) |
|---|
| 53 | |
|---|
| 54 | |
|---|
| 55 | (defparameter *white-space* |
|---|
| 56 | (list #\Space #\Tab #\Newline #\cr) |
|---|
| 57 | "Contains all characters that are treated as white space.") |
|---|
| 58 | |
|---|
| 59 | |
|---|
| 60 | (defun white-space() |
|---|
| 61 | "Returns a lit os string that represents a white space." |
|---|
| 62 | (map 'list #'(lambda(char) |
|---|
| 63 | (string char)) |
|---|
| 64 | *white-space*)) |
|---|
| 65 | |
|---|
| 66 | |
|---|
| 67 | (defmacro concat (&rest strings) |
|---|
| 68 | `(concatenate 'string ,@strings)) |
|---|
| 69 | |
|---|
| 70 | |
|---|
| 71 | (defmacro push-string (obj place) |
|---|
| 72 | "Imitates the push macro but instead of pushing object in a list, |
|---|
| 73 | there will be appended the given string to the main string object." |
|---|
| 74 | `(setf ,place (concat ,place ,obj))) |
|---|
| 75 | |
|---|
| 76 | |
|---|
| 77 | (defmacro when-do (result-bounding condition-statement do-with-result) |
|---|
| 78 | "Executes the first statement and stores its result in the variable result. |
|---|
| 79 | If result isn't nil the second statement is called. |
|---|
| 80 | The second statement can use the variable tools:result as a parameter." |
|---|
| 81 | `(let ((,result-bounding ,condition-statement)) |
|---|
| 82 | (if ,result-bounding |
|---|
| 83 | ,do-with-result |
|---|
| 84 | nil))) |
|---|
| 85 | |
|---|
| 86 | |
|---|
| 87 | (defun white-space-p (str) |
|---|
| 88 | "Returns t if the passed str contains only white space characters." |
|---|
| 89 | (cond ((and (= (length str) 1) |
|---|
| 90 | (string-starts-with-one-of str (white-space))) |
|---|
| 91 | t) |
|---|
| 92 | ((string-starts-with-one-of str (white-space)) |
|---|
| 93 | (white-space-p (subseq str 1))) |
|---|
| 94 | (t |
|---|
| 95 | nil))) |
|---|
| 96 | |
|---|
| 97 | |
|---|
| 98 | (defun remove-null (lst) |
|---|
| 99 | "Removes all null values from the passed list." |
|---|
| 100 | (remove-if #'null lst)) |
|---|
| 101 | |
|---|
| 102 | |
|---|
| 103 | (defun full-path (pathname) |
|---|
| 104 | "Returns a string that represents the full path of the passed |
|---|
| 105 | CL:Pathname construct." |
|---|
| 106 | (declare (CL:Pathname pathname)) |
|---|
| 107 | (let ((segments |
|---|
| 108 | (remove-if #'null |
|---|
| 109 | (map 'list #'(lambda(item) |
|---|
| 110 | (when (stringp item) |
|---|
| 111 | (concat "/" item))) |
|---|
| 112 | (pathname-directory pathname)))) |
|---|
| 113 | (full-path-string "")) |
|---|
| 114 | (dolist (segment segments) |
|---|
| 115 | (push-string segment full-path-string)) |
|---|
| 116 | (concat full-path-string "/" (pathname-name pathname)))) |
|---|
| 117 | |
|---|
| 118 | |
|---|
| 119 | (defun trim-whitespace-left (value) |
|---|
| 120 | "Uses string-left-trim with a predefined character-list." |
|---|
| 121 | (declare (type (or Null String) value)) |
|---|
| 122 | (when value |
|---|
| 123 | (string-left-trim *white-space* value))) |
|---|
| 124 | |
|---|
| 125 | |
|---|
| 126 | (defun trim-whitespace-right (value) |
|---|
| 127 | "Uses string-right-trim with a predefined character-list." |
|---|
| 128 | (declare (type (or Null String) value)) |
|---|
| 129 | (when value |
|---|
| 130 | (string-right-trim *white-space* value))) |
|---|
| 131 | |
|---|
| 132 | |
|---|
| 133 | (defun trim-whitespace (value) |
|---|
| 134 | "Uses string-trim with a predefined character-list." |
|---|
| 135 | (declare (type (or Null String) value)) |
|---|
| 136 | (when value |
|---|
| 137 | (string-trim *white-space* value))) |
|---|
| 138 | |
|---|
| 139 | |
|---|
| 140 | (defun string-starts-with (str prefix &key (ignore-case nil)) |
|---|
| 141 | "Checks if string str starts with a given prefix." |
|---|
| 142 | (declare (String str prefix) |
|---|
| 143 | (Boolean ignore-case)) |
|---|
| 144 | (let ((str-i (if ignore-case |
|---|
| 145 | (string-downcase str :start 0 :end (min (length str) |
|---|
| 146 | (length prefix))) |
|---|
| 147 | str)) |
|---|
| 148 | (prefix-i (if ignore-case |
|---|
| 149 | (string-downcase prefix) |
|---|
| 150 | prefix))) |
|---|
| 151 | (string= str-i prefix-i :start1 0 :end1 |
|---|
| 152 | (min (length prefix-i) |
|---|
| 153 | (length str-i))))) |
|---|
| 154 | |
|---|
| 155 | |
|---|
| 156 | (defun string-starts-with-one-of (str prefixes &key (ignore-case nil)) |
|---|
| 157 | "Returns t if str ends with one of the string contained in suffixes." |
|---|
| 158 | (declare (String str) |
|---|
| 159 | (List prefixes) |
|---|
| 160 | (Boolean ignore-case)) |
|---|
| 161 | (loop for prefix in prefixes |
|---|
| 162 | when (string-starts-with str prefix :ignore-case ignore-case) |
|---|
| 163 | return t)) |
|---|
| 164 | |
|---|
| 165 | |
|---|
| 166 | (defun string-ends-with (str suffix &key (ignore-case nil)) |
|---|
| 167 | "Checks if string str ends with a given suffix." |
|---|
| 168 | (declare (String str suffix) |
|---|
| 169 | (Boolean ignore-case)) |
|---|
| 170 | (let ((str-i (if ignore-case |
|---|
| 171 | (string-downcase str :start (max (- (length str) |
|---|
| 172 | (length suffix)) |
|---|
| 173 | 0) |
|---|
| 174 | :end (length str)) |
|---|
| 175 | str)) |
|---|
| 176 | (suffix-i (if ignore-case |
|---|
| 177 | (string-downcase suffix) |
|---|
| 178 | suffix))) |
|---|
| 179 | (string= str-i suffix-i :start1 (max (- (length str) |
|---|
| 180 | (length suffix)) |
|---|
| 181 | 0)))) |
|---|
| 182 | |
|---|
| 183 | |
|---|
| 184 | (defun string-ends-with-one-of (str suffixes &key (ignore-case nil)) |
|---|
| 185 | "Returns t if str ends with one of the string contained in suffixes." |
|---|
| 186 | (declare (String str) |
|---|
| 187 | (List suffixes) |
|---|
| 188 | (Boolean ignore-case)) |
|---|
| 189 | (loop for suffix in suffixes |
|---|
| 190 | when (string-ends-with str suffix :ignore-case ignore-case) |
|---|
| 191 | return t)) |
|---|
| 192 | |
|---|
| 193 | |
|---|
| 194 | (defun string-replace (main-string string-to-replace new-string) |
|---|
| 195 | "Replaces every occurrence of string-to-replace by new-string |
|---|
| 196 | in main-string." |
|---|
| 197 | (declare (String main-string string-to-replace new-string)) |
|---|
| 198 | (if (string= string-to-replace new-string) |
|---|
| 199 | main-string |
|---|
| 200 | (let ((search-idx (search-first (list string-to-replace) main-string))) |
|---|
| 201 | (if (not search-idx) |
|---|
| 202 | main-string |
|---|
| 203 | (let* ((leading-part (subseq main-string 0 search-idx)) |
|---|
| 204 | (trailing-part |
|---|
| 205 | (subseq main-string |
|---|
| 206 | (+ search-idx (length string-to-replace)))) |
|---|
| 207 | (modified-string |
|---|
| 208 | (concat leading-part new-string trailing-part))) |
|---|
| 209 | (if (search-first (list string-to-replace) trailing-part) |
|---|
| 210 | (string-replace modified-string string-to-replace new-string) |
|---|
| 211 | modified-string)))))) |
|---|
| 212 | |
|---|
| 213 | |
|---|
| 214 | |
|---|
| 215 | (defun string-starts-with-digit (str) |
|---|
| 216 | "Checks whether the passed string starts with a digit." |
|---|
| 217 | (declare (String str)) |
|---|
| 218 | (loop for item in (list 0 1 2 3 4 5 6 7 8 9) |
|---|
| 219 | when (string-starts-with str (write-to-string item)) |
|---|
| 220 | return t)) |
|---|
| 221 | |
|---|
| 222 | |
|---|
| 223 | (defun string-after-number (str) |
|---|
| 224 | "If str starts with a digit, there is returned the first |
|---|
| 225 | substring after a character that is a non-digit. |
|---|
| 226 | If str does not start with a digit str is returned." |
|---|
| 227 | (declare (String str)) |
|---|
| 228 | (if (and (string-starts-with-digit str) |
|---|
| 229 | (> (length str) 0)) |
|---|
| 230 | (string-after-number (subseq str 1)) |
|---|
| 231 | str)) |
|---|
| 232 | |
|---|
| 233 | |
|---|
| 234 | (defun separate-leading-digits (str &optional digits) |
|---|
| 235 | "If str starts with a number the number is returned." |
|---|
| 236 | (declare (String str) |
|---|
| 237 | (type (or Null String) digits)) |
|---|
| 238 | (if (string-starts-with-digit str) |
|---|
| 239 | (separate-leading-digits |
|---|
| 240 | (subseq str 1) (concat digits (subseq str 0 1))) |
|---|
| 241 | digits)) |
|---|
| 242 | |
|---|
| 243 | |
|---|
| 244 | (defun string-starts-with-char (begin str) |
|---|
| 245 | (equal (char str 0) begin)) |
|---|
| 246 | |
|---|
| 247 | |
|---|
| 248 | (defun string-until (str anchor) |
|---|
| 249 | "Returns a substring until the position of the passed anchor." |
|---|
| 250 | (declare (String str anchor)) |
|---|
| 251 | (let ((pos (search anchor str))) |
|---|
| 252 | (if pos |
|---|
| 253 | (subseq str 0 pos) |
|---|
| 254 | str))) |
|---|
| 255 | |
|---|
| 256 | |
|---|
| 257 | (defun string-after (str prefix) |
|---|
| 258 | "Returns the substring after the found prefix. |
|---|
| 259 | If there is no substring equal to prefix nil is returned." |
|---|
| 260 | (declare (String str prefix)) |
|---|
| 261 | (let ((pos (search prefix str))) |
|---|
| 262 | (if pos |
|---|
| 263 | (subseq str (+ pos (length prefix))) |
|---|
| 264 | nil))) |
|---|
| 265 | |
|---|
| 266 | |
|---|
| 267 | (defun search-first (search-strings main-string &key from-end) |
|---|
| 268 | "Returns the position of one of the search-strings. The returned position |
|---|
| 269 | is the one closest to 0. If no search-string is found, nil is returned." |
|---|
| 270 | (declare (String main-string) |
|---|
| 271 | (List search-strings)) |
|---|
| 272 | (let ((positions |
|---|
| 273 | (remove-null |
|---|
| 274 | (map 'list #'(lambda(search-str) |
|---|
| 275 | (search search-str main-string :from-end from-end)) |
|---|
| 276 | search-strings)))) |
|---|
| 277 | (let ((sorted-positions (if from-end |
|---|
| 278 | (sort positions #'>) |
|---|
| 279 | (sort positions #'<)))) |
|---|
| 280 | (when sorted-positions |
|---|
| 281 | (first sorted-positions))))) |
|---|
| 282 | |
|---|
| 283 | |
|---|
| 284 | (defun find-literal-end (query-string delimiter &optional (overall-pos 0)) |
|---|
| 285 | "Returns the end of the literal corresponding to the passed delimiter |
|---|
| 286 | string. The query-string must start after the opening literal delimiter. |
|---|
| 287 | The return value is an int that represents the start index of closing |
|---|
| 288 | delimiter. delimiter must be either \", ', \"\"\", or '''. |
|---|
| 289 | If the returns value is nil, there is no closing delimiter." |
|---|
| 290 | (declare (String query-string delimiter) |
|---|
| 291 | (Integer overall-pos)) |
|---|
| 292 | (let ((current-pos (search delimiter query-string))) |
|---|
| 293 | (if current-pos |
|---|
| 294 | (if (string-ends-with (subseq query-string 0 current-pos) "\\") |
|---|
| 295 | (find-literal-end (subseq query-string (+ current-pos |
|---|
| 296 | (length delimiter))) |
|---|
| 297 | delimiter (+ overall-pos current-pos 1)) |
|---|
| 298 | (+ overall-pos current-pos (length delimiter))) |
|---|
| 299 | nil))) |
|---|
| 300 | |
|---|
| 301 | |
|---|
| 302 | (defun get-literal-quotation (str) |
|---|
| 303 | "Returns ', ''', \" or \"\"\" when the string starts with a literal delimiter." |
|---|
| 304 | (cond ((string-starts-with str "'''") |
|---|
| 305 | "'''") |
|---|
| 306 | ((string-starts-with str "\"\"\"") |
|---|
| 307 | "\"\"\"") |
|---|
| 308 | ((string-starts-with str "'") |
|---|
| 309 | "'") |
|---|
| 310 | ((string-starts-with str "\"") |
|---|
| 311 | "\""))) |
|---|
| 312 | |
|---|
| 313 | |
|---|
| 314 | (defun get-literal (query-string &key (quotation nil)) |
|---|
| 315 | "Returns a list of the form (:next-string <string> :literal <string> |
|---|
| 316 | where next-query is the query after the found literal and literal |
|---|
| 317 | is the literal string." |
|---|
| 318 | (declare (String query-string) |
|---|
| 319 | (type (or Null String) quotation)) |
|---|
| 320 | (let ((local-quotation quotation)) |
|---|
| 321 | (cond ((or (string-starts-with query-string "\"\"\"") |
|---|
| 322 | (string-starts-with query-string "'''")) |
|---|
| 323 | (unless local-quotation |
|---|
| 324 | (setf local-quotation (subseq query-string 0 3))) |
|---|
| 325 | (let ((literal-end |
|---|
| 326 | (find-literal-end (subseq query-string 3) (subseq query-string 0 3)))) |
|---|
| 327 | (when literal-end |
|---|
| 328 | (list :next-string (subseq query-string (+ 3 literal-end)) |
|---|
| 329 | :literal (concat quotation |
|---|
| 330 | (subseq query-string 3 literal-end) |
|---|
| 331 | quotation))))) |
|---|
| 332 | ((or (string-starts-with query-string "\"") |
|---|
| 333 | (string-starts-with query-string "'")) |
|---|
| 334 | (unless local-quotation |
|---|
| 335 | (setf local-quotation (subseq query-string 0 1))) |
|---|
| 336 | (let ((literal-end |
|---|
| 337 | (find-literal-end (subseq query-string 1) |
|---|
| 338 | (subseq query-string 0 1)))) |
|---|
| 339 | (when literal-end |
|---|
| 340 | (let ((literal |
|---|
| 341 | (escape-string (subseq query-string 1 literal-end) "\""))) |
|---|
| 342 | (list :next-string (subseq query-string (+ 1 literal-end)) |
|---|
| 343 | :literal (concat local-quotation literal |
|---|
| 344 | local-quotation))))))))) |
|---|
| 345 | |
|---|
| 346 | |
|---|
| 347 | (defun search-first-ignore-literals (search-strings main-string &key from-end) |
|---|
| 348 | (declare (String main-string) |
|---|
| 349 | (List search-strings) |
|---|
| 350 | (Boolean from-end)) |
|---|
| 351 | (let ((first-pos |
|---|
| 352 | (search-first search-strings main-string :from-end from-end))) |
|---|
| 353 | (when first-pos |
|---|
| 354 | (if (not (in-literal-string-p main-string first-pos)) |
|---|
| 355 | first-pos |
|---|
| 356 | (let* ((literal-start |
|---|
| 357 | (search-first (list "\"" "'") (subseq main-string 0 first-pos) |
|---|
| 358 | :from-end from-end)) |
|---|
| 359 | (next-str |
|---|
| 360 | (if from-end |
|---|
| 361 | (subseq main-string 0 literal-start) |
|---|
| 362 | (let* ((sub-str (subseq main-string literal-start)) |
|---|
| 363 | (literal-result (get-literal sub-str))) |
|---|
| 364 | (getf literal-result :next-string))))) |
|---|
| 365 | (let ((next-pos |
|---|
| 366 | (search-first-ignore-literals search-strings next-str |
|---|
| 367 | :from-end from-end))) |
|---|
| 368 | (when next-pos |
|---|
| 369 | (+ (- (length main-string) (length next-str)) next-pos)))))))) |
|---|
| 370 | |
|---|
| 371 | |
|---|
| 372 | (defun concatenate-uri (absolute-ns value) |
|---|
| 373 | "Returns a string conctenated of the absolut namespace an the given value |
|---|
| 374 | separated by either '#' or '/'." |
|---|
| 375 | (declare (string absolute-ns value)) |
|---|
| 376 | (unless (and (> (length absolute-ns) 0) |
|---|
| 377 | (> (length value) 0)) |
|---|
| 378 | (error "From concatenate-uri(): absolute-ns and value must be of length > 0")) |
|---|
| 379 | (unless (absolute-uri-p absolute-ns) |
|---|
| 380 | (error "From concatenate-uri(): absolute-ns has to be an absolute URI: ~a" absolute-ns)) |
|---|
| 381 | (let ((last-char |
|---|
| 382 | (elt absolute-ns (- (length absolute-ns) 1))) |
|---|
| 383 | (first-char |
|---|
| 384 | (elt value 0))) |
|---|
| 385 | (let ((separator |
|---|
| 386 | (cond |
|---|
| 387 | ((or (eql first-char #\#) |
|---|
| 388 | (eql first-char #\/)) |
|---|
| 389 | "") |
|---|
| 390 | ((or (eql last-char #\#) |
|---|
| 391 | (eql last-char #\/)) |
|---|
| 392 | "") |
|---|
| 393 | (t |
|---|
| 394 | "/")))) |
|---|
| 395 | (let ((prep-ns |
|---|
| 396 | (if (and (eql last-char first-char) |
|---|
| 397 | (or (eql last-char #\#) |
|---|
| 398 | (eql last-char #\/))) |
|---|
| 399 | (subseq absolute-ns 0 (- (length absolute-ns) 1)) |
|---|
| 400 | (if (and (eql last-char #\#) |
|---|
| 401 | (find #\/ value)) |
|---|
| 402 | (progn |
|---|
| 403 | (when (not (eql first-char #\/)) |
|---|
| 404 | (setf separator "/")) |
|---|
| 405 | (subseq absolute-ns 0 (- (length absolute-ns) 1))) |
|---|
| 406 | absolute-ns)))) |
|---|
| 407 | (concat prep-ns separator value))))) |
|---|
| 408 | |
|---|
| 409 | |
|---|
| 410 | (defun absolute-uri-p (uri) |
|---|
| 411 | "Returns t if the passed uri is an absolute one. This |
|---|
| 412 | is indicated by a ':' with no leadgin '/'." |
|---|
| 413 | (when uri |
|---|
| 414 | (let ((position-of-colon |
|---|
| 415 | (position #\: uri))) |
|---|
| 416 | (declare (string uri)) |
|---|
| 417 | (and position-of-colon (> position-of-colon 0) |
|---|
| 418 | (not (find #\/ (subseq uri 0 position-of-colon))))))) |
|---|
| 419 | |
|---|
| 420 | |
|---|
| 421 | (defun escape-string (str char-to-escape) |
|---|
| 422 | "Escapes every occurrence of char-to-escape in str, if it is |
|---|
| 423 | not escaped." |
|---|
| 424 | (declare (String str char-to-escape)) |
|---|
| 425 | (let ((result "")) |
|---|
| 426 | (dotimes (idx (length str)) |
|---|
| 427 | (let ((current-char (subseq str idx (1+ idx))) |
|---|
| 428 | (previous-char (if (= idx 0) "" (subseq str (1- idx) idx)))) |
|---|
| 429 | (cond ((and (string= current-char char-to-escape) |
|---|
| 430 | (string/= previous-char "\\")) |
|---|
| 431 | (push-string "\\" result) |
|---|
| 432 | (push-string current-char result)) |
|---|
| 433 | (t |
|---|
| 434 | (push-string current-char result))))) |
|---|
| 435 | result)) |
|---|
| 436 | |
|---|
| 437 | |
|---|
| 438 | (defun in-literal-string-p(filter-string pos) |
|---|
| 439 | "Returns t if the passed pos is within a literal string value." |
|---|
| 440 | (declare (String filter-string) |
|---|
| 441 | (Integer pos)) |
|---|
| 442 | (let ((result nil)) |
|---|
| 443 | (dotimes (idx (length filter-string) result) |
|---|
| 444 | (let* ((current-str (subseq filter-string idx)) |
|---|
| 445 | (delimiter (get-literal-quotation current-str))) |
|---|
| 446 | (when delimiter |
|---|
| 447 | (let* ((end-pos |
|---|
| 448 | (let ((result |
|---|
| 449 | (find-literal-end (subseq current-str (length delimiter)) |
|---|
| 450 | delimiter))) |
|---|
| 451 | (when result |
|---|
| 452 | (+ (length delimiter) result)))) |
|---|
| 453 | (quoted-str (when end-pos |
|---|
| 454 | (subseq current-str (length delimiter) end-pos))) |
|---|
| 455 | (start-pos idx)) |
|---|
| 456 | (when quoted-str |
|---|
| 457 | (incf idx (+ (* 2 (length delimiter)) (length quoted-str))) |
|---|
| 458 | (if (and (>= pos start-pos) |
|---|
| 459 | (< pos (+ start-pos end-pos))) |
|---|
| 460 | (progn |
|---|
| 461 | (setf result t) |
|---|
| 462 | (setf idx (length filter-string))) |
|---|
| 463 | (incf idx (+ (* 2 (length delimiter)) (length quoted-str))))))))))) |
|---|
| 464 | |
|---|
| 465 | |
|---|
| 466 | (defun search-first-unclosed-paranthesis (str &key (ignore-literals t)) |
|---|
| 467 | "Returns the idx of the first ( that is not closed, the search is |
|---|
| 468 | started from the end of the string. |
|---|
| 469 | If ignore-literals is set to t all paranthesis that are within |
|---|
| 470 | \", \"\"\", ' and ''' are ignored." |
|---|
| 471 | (declare (String str) |
|---|
| 472 | (Boolean ignore-literals)) |
|---|
| 473 | (let ((open-brackets 0) |
|---|
| 474 | (result-idx nil)) |
|---|
| 475 | (do ((idx (1- (length str)))) ((< idx 0)) |
|---|
| 476 | (let ((current-char (subseq str idx (1+ idx)))) |
|---|
| 477 | (cond ((string= current-char ")") |
|---|
| 478 | (when (or (not ignore-literals) |
|---|
| 479 | (and ignore-literals |
|---|
| 480 | (not (in-literal-string-p str idx)))) |
|---|
| 481 | (decf open-brackets))) |
|---|
| 482 | ((string= current-char "(") |
|---|
| 483 | (when (or (not ignore-literals) |
|---|
| 484 | (and ignore-literals |
|---|
| 485 | (not (in-literal-string-p str idx)))) |
|---|
| 486 | (incf open-brackets) |
|---|
| 487 | (when (> open-brackets 0) |
|---|
| 488 | (setf result-idx idx) |
|---|
| 489 | (setf idx 0))))) |
|---|
| 490 | (decf idx))) |
|---|
| 491 | result-idx)) |
|---|
| 492 | |
|---|
| 493 | |
|---|
| 494 | (defun search-first-unopened-paranthesis (str &key (ignore-literals t)) |
|---|
| 495 | "Returns the idx of the first paranthesis that is not opened in str. |
|---|
| 496 | If ignore-literals is set to t all mparanthesis that are within |
|---|
| 497 | \", \"\"\", ' and ''' are ignored." |
|---|
| 498 | (declare (String str) |
|---|
| 499 | (Boolean ignore-literals)) |
|---|
| 500 | (let ((closed-brackets 0) |
|---|
| 501 | (result-idx nil)) |
|---|
| 502 | (dotimes (idx (length str)) |
|---|
| 503 | (let ((current-char (subseq str idx (1+ idx)))) |
|---|
| 504 | (cond ((string= current-char "(") |
|---|
| 505 | (when (or (not ignore-literals) |
|---|
| 506 | (and ignore-literals |
|---|
| 507 | (not (in-literal-string-p str idx)))) |
|---|
| 508 | (decf closed-brackets) |
|---|
| 509 | (setf result-idx nil))) |
|---|
| 510 | ((string= current-char ")") |
|---|
| 511 | (when (or (not ignore-literals) |
|---|
| 512 | (and ignore-literals |
|---|
| 513 | (not (in-literal-string-p str idx)))) |
|---|
| 514 | (incf closed-brackets) |
|---|
| 515 | (when (> closed-brackets 0) |
|---|
| 516 | (setf result-idx idx) |
|---|
| 517 | (setf idx (length str)))))))) |
|---|
| 518 | result-idx)) |
|---|
| 519 | |
|---|
| 520 | |
|---|
| 521 | (defun return-if-starts-with (str to-be-matched &key from-end ignore-case |
|---|
| 522 | ignore-leading-whitespace) |
|---|
| 523 | "Returns the string that is contained in to-be-matched and that is the |
|---|
| 524 | start of the string str." |
|---|
| 525 | (declare (String str) |
|---|
| 526 | (List to-be-matched) |
|---|
| 527 | (Boolean from-end ignore-case ignore-leading-whitespace)) |
|---|
| 528 | (let ((cleaned-str (if ignore-leading-whitespace |
|---|
| 529 | (trim-whitespace-left str) |
|---|
| 530 | str))) |
|---|
| 531 | (loop for try in to-be-matched |
|---|
| 532 | when (if from-end |
|---|
| 533 | (string-ends-with cleaned-str try :ignore-case ignore-case) |
|---|
| 534 | (string-starts-with cleaned-str try :ignore-case ignore-case)) |
|---|
| 535 | return try))) |
|---|
| 536 | |
|---|
| 537 | |
|---|
| 538 | (defun prefix-of-uri (uri) |
|---|
| 539 | "Returns the prefix of the passed URI until the last / or # is reached. |
|---|
| 540 | Note / or # that are placed on the last idx of the string are ignored, e.g. |
|---|
| 541 | http://eg.org/ or http://eg.org//." |
|---|
| 542 | (let* ((after-scheme (string-after uri "://")) |
|---|
| 543 | (prepared-after-scheme (when after-scheme |
|---|
| 544 | (cut-uri-end after-scheme)))) |
|---|
| 545 | (when prepared-after-scheme |
|---|
| 546 | (let ((pos-# |
|---|
| 547 | (let ((val (search-first (list "#") prepared-after-scheme :from-end t))) |
|---|
| 548 | (when val |
|---|
| 549 | (+ val (- (length uri) (length after-scheme)))))) |
|---|
| 550 | (pos-/ |
|---|
| 551 | (let ((val (search-first (list "/") prepared-after-scheme :from-end t))) |
|---|
| 552 | (when val |
|---|
| 553 | (+ val (- (length uri) (length after-scheme))))))) |
|---|
| 554 | (cond ((and pos-# pos-/) |
|---|
| 555 | (if (> pos-# pos-/) |
|---|
| 556 | (subseq uri 0 (1+ pos-#)) |
|---|
| 557 | (subseq uri 0 (1+ pos-/)))) |
|---|
| 558 | (pos-# |
|---|
| 559 | (subseq uri 0 (1+ pos-#))) |
|---|
| 560 | (pos-/ |
|---|
| 561 | (subseq uri 0 (1+ pos-/)))))))) |
|---|
| 562 | |
|---|
| 563 | |
|---|
| 564 | (defun cut-uri-end (uri) |
|---|
| 565 | "Cuts the passed uri if it ends with '/+' or '#+'." |
|---|
| 566 | (if (string-ends-with-one-of uri (list "#" "/")) |
|---|
| 567 | (cut-uri-end (subseq uri 0 (1- (length uri)))) |
|---|
| 568 | uri)) |
|---|
| 569 | |
|---|
| 570 | |
|---|
| 571 | (defun get-store-spec (pathname) |
|---|
| 572 | "return the store spec for elephant and ensure that the path name is absolute" |
|---|
| 573 | (list :BDB (truename pathname))) |
|---|
| 574 | |
|---|
| 575 | |
|---|
| 576 | (defun open-tm-store (pathname) |
|---|
| 577 | "Wraps the function elephant:open-store with the key-parameter |
|---|
| 578 | :register, so one store canbe used by several instances of |
|---|
| 579 | isidorus in parallel." |
|---|
| 580 | (if elephant:*store-controller* |
|---|
| 581 | elephant:*store-controller* |
|---|
| 582 | (elephant:open-store (get-store-spec pathname) :register t))) |
|---|
| 583 | |
|---|
| 584 | |
|---|
| 585 | (defun close-tm-store () |
|---|
| 586 | "Wraps the function elephant:close-store." |
|---|
| 587 | (elephant:close-store)) |
|---|
| 588 | |
|---|
| 589 | |
|---|
| 590 | (defun read-file-to-string (file-path) |
|---|
| 591 | "A helper function that reads a file and returns the content as a string." |
|---|
| 592 | (with-open-file (stream file-path) |
|---|
| 593 | (let ((file-string "")) |
|---|
| 594 | (do ((l (read-line stream) (read-line stream nil 'eof))) |
|---|
| 595 | ((eq l 'eof)) |
|---|
| 596 | (base-tools:push-string (base-tools::concat l (string #\newline)) file-string)) |
|---|
| 597 | (subseq file-string 0 (max 0 (1- (length file-string))))))) |
|---|
