[spellcheck] Updated Hunspell to 1.5.4

third_party/hunspell/src/parsers/textparser.cxx

+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Hunspell, based on MySpell.
+ *
+ * The Initial Developers of the Original Code are
+ * Kevin Hendricks (MySpell) and Németh László (Hunspell).
+ * Portions created by the Initial Developers are Copyright (C) 2002-2005
+ * the Initial Developers. All Rights Reserved.
+ *
+ * Contributor(s): David Einstein, Davide Prina, Giuseppe Modugno,
+ * Gianluca Turconi, Simon Brouwer, Noll János, Bíró Árpád,
+ * Goldman Eleonóra, Sarlós Tamás, Bencsáth Boldizsár, Halácsy Péter,
+ * Dvornik László, Gefferth András, Nagy Viktor, Varga Dániel, Chris Halls,
+ * Rene Engelhard, Bram Moolenaar, Dafydd Jones, Harri Pitkänen
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
 #include <cstdlib>
 #include <cstring>
 #include <cstdio>
 #include <ctype.h>
 
 #include "../hunspell/csutil.hxx"
 #include "textparser.hxx"
 
+#include <algorithm>
+
 #ifndef W32
 using namespace std;
 #endif
 
 // ISO-8859-1 HTML character entities
 
-static const char * LATIN1[] = {
-        "&Agrave;",
-        "&Atilde;",
-        "&Aring;",
-        "&AElig;",
-        "&Egrave;",
-        "&Ecirc;",
-        "&Igrave;",
-        "&Iuml;",
-        "&ETH;",
-        "&Ntilde;",
-        "&Ograve;",
-        "&Oslash;",
-        "&Ugrave;",
-        "&THORN;",
-        "&agrave;",
-        "&atilde;",
-        "&aring;",
-        "&aelig;",
-        "&egrave;",
-        "&ecirc;",
-        "&igrave;",
-        "&iuml;",
-        "&eth;",
-        "&ntilde;",
-        "&ograve;",
-        "&oslash;",
-        "&ugrave;",
-        "&thorn;",
-        "&yuml;"
-};
-
-#define LATIN1_LEN (sizeof(LATIN1) / sizeof(char *))
-
-TextParser::TextParser() {
-        init((char *) NULL);
-}
-
-TextParser::TextParser(const char * wordchars)
-{
-        init(wordchars);
-}
-
-TextParser::TextParser(unsigned short * wordchars, int len)
-{
-        init(wordchars, len);
-}
-
-TextParser::~TextParser() 
-{
-}
-
-int TextParser::is_wordchar(char * w)
-{
-        if (*w == '\0') return 0;
-        if (utf8) {
-                w_char wc;
-                unsigned short idx;
-                u8_u16(&wc, 1, w);
-                idx = (wc.h << 8) + wc.l;
-                return (unicodeisalpha(idx) || (wordchars_utf16 && flag_bsearch(wordchars_utf16, *((unsigned short *) &wc), wclen)));
-        } else {
-                return wordcharacters[(*w + 256) % 256];
-        }
-}
-
-const char * TextParser::get_latin1(char * s)
-{
-        if (s[0] == '&') {
-                unsigned int i = 0;
-                while ((i < LATIN1_LEN) && 
-                        strncmp(LATIN1[i], s, strlen(LATIN1[i]))) i++;
-                if (i != LATIN1_LEN) return LATIN1[i];
-        }
-        return NULL;
-}
-
-void TextParser::init(const char * wordchars)
-{
-        for (int i = 0; i < MAXPREVLINE; i++) {
-                line[i][0] = '\0';
-        }
-        actual = 0;
-        head = 0;
-        token = 0;
-        state = 0;
-        utf8 = 0;
-        checkurl = 0;
-        unsigned int j;
-        for (j = 0; j < 256; j++) {
-                wordcharacters[j] = 0;
-        }
-        if (!wordchars) wordchars = "qwertzuiopasdfghjklyxcvbnmQWERTZUIOPASDFGHJKLYXCVBNM";
-        for (j = 0; j < strlen(wordchars); j++) {
-                wordcharacters[(wordchars[j] + 256) % 256] = 1;
-        }
-}
-
-void TextParser::init(unsigned short * wc, int len)
-{
-        for (int i = 0; i < MAXPREVLINE; i++) {
-                line[i][0] = '\0';
-        }
-        actual = 0;
-        head = 0;
-        token = 0;
-        state = 0;
-        utf8 = 1;
-        checkurl = 0;
-        wordchars_utf16 = wc;
-        wclen = len;
-}
-
-int TextParser::next_char(char * line, int * pos) {
-        if (*(line + *pos) == '\0') return 1;
-        if (utf8) {
-            if (*(line + *pos) >> 7) {
-                // jump to next UTF-8 character
-                for((*pos)++; (*(line + *pos) & 0xc0) == 0x80; (*pos)++);
-            } else {
-                (*pos)++;
+static const char* LATIN1[] = {
+    "&Agrave;", "&Atilde;", "&Aring;",  "&AElig;",  "&Egrave;", "&Ecirc;",
+    "&Igrave;", "&Iuml;",   "&ETH;",    "&Ntilde;", "&Ograve;", "&Oslash;",
+    "&Ugrave;", "&THORN;",  "&agrave;", "&atilde;", "&aring;",  "&aelig;",
+    "&egrave;", "&ecirc;",  "&igrave;", "&iuml;",   "&eth;",    "&ntilde;",
+    "&ograve;", "&oslash;", "&ugrave;", "&thorn;",  "&yuml;"};
+
+#define LATIN1_LEN (sizeof(LATIN1) / sizeof(char*))
+
+#define ENTITY_APOS "&apos;"
+#define UTF8_APOS "\xe2\x80\x99"
+#define APOSTROPHE "'"
+
+TextParser::TextParser(const char* wordchars) {
+  init(wordchars);
+}
+
+TextParser::TextParser(const w_char* wordchars, int len) {
+  init(wordchars, len);
+}
+
+TextParser::~TextParser() {}
+
+int TextParser::is_wordchar(const char* w) {
+  if (*w == '\0')
+    return 0;
+  if (utf8) {
+    std::vector<w_char> wc;
+    unsigned short idx;
+    u8_u16(wc, w);
+    if (wc.empty())
+        return 0;
+    idx = (wc[0].h << 8) + wc[0].l;
+    return (unicodeisalpha(idx) ||
+            (wordchars_utf16 &&
+             std::binary_search(wordchars_utf16, wordchars_utf16 + wclen, wc[0])));
+  } else {
+    return wordcharacters[(*w + 256) % 256];
+  }
+}
+
+const char* TextParser::get_latin1(const char* s) {
+  if (s[0] == '&') {
+    unsigned int i = 0;
+    while ((i < LATIN1_LEN) && strncmp(LATIN1[i], s, strlen(LATIN1[i])))
+      i++;
+    if (i != LATIN1_LEN)
+      return LATIN1[i];
+  }
+  return NULL;
+}
+
+void TextParser::init(const char* wordchars) {
+  actual = 0;
+  head = 0;
+  token = 0;
+  state = 0;
+  utf8 = 0;
+  checkurl = 0;
+  wordchars_utf16 = NULL;
+  wclen = 0;
+  unsigned int j;
+  for (j = 0; j < 256; j++) {
+    wordcharacters[j] = 0;
+  }
+  if (!wordchars)
+    wordchars = "qwertzuiopasdfghjklyxcvbnmQWERTZUIOPASDFGHJKLYXCVBNM";
+  for (j = 0; j < strlen(wordchars); j++) {
+    wordcharacters[(wordchars[j] + 256) % 256] = 1;
+  }
+}
+
+void TextParser::init(const w_char* wc, int len) {
+  actual = 0;
+  head = 0;
+  token = 0;
+  state = 0;
+  utf8 = 1;
+  checkurl = 0;
+  wordchars_utf16 = wc;
+  wclen = len;
+}
+
+int TextParser::next_char(const char* ln, size_t* pos) {
+  if (*(ln + *pos) == '\0')
+    return 1;
+  if (utf8) {
+    if (*(ln + *pos) >> 7) {
+      // jump to next UTF-8 character
+      for ((*pos)++; (*(ln + *pos) & 0xc0) == 0x80; (*pos)++)
+        ;
+    } else {
+      (*pos)++;
+    }
+  } else
+    (*pos)++;
+  return 0;
+}
+
+void TextParser::put_line(const char* word) {
+  actual = (actual + 1) % MAXPREVLINE;
+  line[actual].assign(word);
+  token = 0;
+  head = 0;
+  check_urls();
+}
+
+std::string TextParser::get_prevline(int n) const {
+  return line[(actual + MAXPREVLINE - n) % MAXPREVLINE];
+}
+
+std::string TextParser::get_line() const {
+  return get_prevline(0);
+}
+
+bool TextParser::next_token(std::string &t) {
+  const char* latin1;
+
+  for (;;) {
+    switch (state) {
+      case 0:  // non word chars
+        if (is_wordchar(line[actual].c_str() + head)) {
+          state = 1;
+          token = head;
+        } else if ((latin1 = get_latin1(line[actual].c_str() + head))) {
+          state = 1;
+          token = head;
+          head += strlen(latin1);
+        }
+        break;
+      case 1:  // wordchar
+        if ((latin1 = get_latin1(line[actual].c_str() + head))) {
+          head += strlen(latin1);
+        } else if ((is_wordchar((char*)APOSTROPHE) ||
+                    (is_utf8() && is_wordchar((char*)UTF8_APOS))) &&
+                   !line[actual].empty() && line[actual][head] == '\'' &&
+                   is_wordchar(line[actual].c_str() + head + 1)) {
+          head++;
+        } else if (is_utf8() &&
+                   is_wordchar((char*)APOSTROPHE) &&  // add Unicode apostrophe
+                                                      // to the WORDCHARS, if
+                                                      // needed
+                   strncmp(line[actual].c_str() + head, UTF8_APOS, strlen(UTF8_APOS)) ==
+                       0 &&
+                   is_wordchar(line[actual].c_str() + head + strlen(UTF8_APOS))) {
+          head += strlen(UTF8_APOS) - 1;
+        } else if (!is_wordchar(line[actual].c_str() + head)) {
+          state = 0;
+          if (alloc_token(token, &head, t))
+            return true;
+        }
+        break;
+    }
+    if (next_char(line[actual].c_str(), &head))
+      return false;
+  }
+}
+
+size_t TextParser::get_tokenpos() {
+  return token;
+}
+
+int TextParser::change_token(const char* word) {
+  if (word) {
+    std::string remainder(line[actual].substr(head));
+    line[actual].resize(token);
+    line[actual].append(word);
+    line[actual].append(remainder);
+    head = token;
+    return 1;
+  }
+  return 0;
+}
+
+void TextParser::check_urls() {
+  urlline.resize(line[actual].size() + 1);
+  int url_state = 0;
+  size_t url_head = 0;
+  size_t url_token = 0;
+  int url = 0;
+  for (;;) {
+    switch (url_state) {
+      case 0:  // non word chars
+        if (is_wordchar(line[actual].c_str() + url_head)) {
+          url_state = 1;
+          url_token = url_head;
+          // Unix path
+        } else if (line[actual][url_head] == '/') {
+          url_state = 1;
+          url_token = url_head;
+          url = 1;
+        }
+        break;
+      case 1:  // wordchar
+        char ch = line[actual][url_head];
+        // e-mail address
+        if ((ch == '@') ||
+            // MS-DOS, Windows path
+            (strncmp(line[actual].c_str() + url_head, ":\\", 2) == 0) ||
+            // URL
+            (strncmp(line[actual].c_str() + url_head, "://", 3) == 0)) {
+          url = 1;
+        } else if (!(is_wordchar(line[actual].c_str() + url_head) || (ch == '-') ||
+                     (ch == '_') || (ch == '\\') || (ch == '.') ||
+                     (ch == ':') || (ch == '/') || (ch == '~') || (ch == '%') ||
+                     (ch == '*') || (ch == '$') || (ch == '[') || (ch == ']') ||
+                     (ch == '?') || (ch == '!') ||
+                     ((ch >= '0') && (ch <= '9')))) {
+          url_state = 0;
+          if (url == 1) {
+            for (size_t i = url_token; i < url_head; ++i) {
+              urlline[i] = true;
             }
-        } else (*pos)++;
-        return 0;
-}
-
-void TextParser::put_line(char * word)
-{
-        actual = (actual + 1) % MAXPREVLINE;
-        strcpy(line[actual], word);
-        token = 0;
-        head = 0;
-        check_urls();
-}
-
-char * TextParser::get_prevline(int n)
-{
-        return mystrdup(line[(actual + MAXPREVLINE - n) % MAXPREVLINE]);
-}
-
-char * TextParser::get_line()
-{
-        return get_prevline(0);
-}
-
-char * TextParser::next_token()
-{
-        const char * latin1;
-        
-        for (;;) {
-                switch (state)
-                {
-                case 0: // non word chars
-                        if (is_wordchar(line[actual] + head)) {
-                                state = 1;
-                                token = head;
-                        } else if ((latin1 = get_latin1(line[actual] + head))) {
-                                state = 1;
-                                token = head;
-                                head += strlen(latin1);
-                        }
-                        break;
-                case 1: // wordchar
-                        if ((latin1 = get_latin1(line[actual] + head))) {
-                                head += strlen(latin1);
-                        } else if (! is_wordchar(line[actual] + head)) {
-                                state = 0;
-                                char * t = alloc_token(token, &head);
-                                if (t) return t;
-                        }
-                        break;
-                }
-                if (next_char(line[actual], &head)) return NULL;
-        }
-}
-
-int TextParser::get_tokenpos()
-{
-        return token;
-}
-
-int TextParser::change_token(const char * word)
-{
-        if (word) {
-                char * r = mystrdup(line[actual] + head);
-                strcpy(line[actual] + token, word);
-                strcat(line[actual], r);
-                head = token;
-                free(r);
-                return 1;
-        }
-        return 0;
-}
-
-void TextParser::check_urls()
-{
-        int url_state = 0;
-        int url_head = 0;
-        int url_token = 0;
-        int url = 0;
-        for (;;) {
-                switch (url_state)
-                {
-                case 0: // non word chars
-                        if (is_wordchar(line[actual] + url_head)) {
-                                url_state = 1;
-                                url_token = url_head;
-                        // Unix path
-                        } else if (*(line[actual] + url_head) == '/') {
-                                url_state = 1;
-                                url_token = url_head;
-                                url = 1;
-                        }
-                        break;
-                case 1: // wordchar
-                        char ch = *(line[actual] + url_head);
-                        // e-mail address
-                        if ((ch == '@') ||
-                            // MS-DOS, Windows path
-                            (strncmp(line[actual] + url_head, ":\\", 2) == 0) ||
-                            // URL
-                            (strncmp(line[actual] + url_head, "://", 3) == 0)) {
-                                url = 1;
-                        } else if (! (is_wordchar(line[actual] + url_head) ||
-                          (ch == '-') || (ch == '_') || (ch == '\\') ||
-                          (ch == '.') || (ch == ':') || (ch == '/') ||
-                          (ch == '~') || (ch == '%') || (ch == '*') ||
-                          (ch == '$') || (ch == '[') || (ch == ']') ||
-                          (ch == '?') || (ch == '!') ||
-                          ((ch >= '0') && (ch <= '9')))) {
-                                url_state = 0;
-                                if (url == 1) {
-                                        for (int i = url_token; i < url_head; i++) {
-                                                *(urlline + i) = 1;
-                                        }
-                                }
-                                url = 0;
-                        }
-                        break;
-                }
-                *(urlline + url_head) = 0;
-                if (next_char(line[actual], &url_head)) return;
-        }
-}
-
-int TextParser::get_url(int token_pos, int * head)
-{
-        for (int i = *head; urlline[i] && *(line[actual]+i); i++, (*head)++);
-        return checkurl ? 0 : urlline[token_pos];
-}
-
-void TextParser::set_url_checking(int check)
-{
-        checkurl = check;
-}
-
-
-char * TextParser::alloc_token(int token, int * head)
-{
-    if (get_url(token, head)) return NULL;
-    char * t = (char *) malloc(*head - token + 1);
-    if (t) {
-        t[*head - token] = '\0';
-        strncpy(t, line[actual] + token, *head - token);
-        // remove colon for Finnish and Swedish language
-        if (t[*head - token - 1] == ':') {
-            t[*head - token - 1] = '\0';
-            if (!t[0]) {
-                free(t);
-                return NULL;
-            }
-        }
-        return t;
-    }
-    fprintf(stderr,"Error - Insufficient Memory\n");
-    return NULL;
-}
+          }
+          url = 0;
+        }
+        break;
+    }
+    urlline[url_head] = false;
+    if (next_char(line[actual].c_str(), &url_head))
+      return;
+  }
+}
+
+int TextParser::get_url(size_t token_pos, size_t* hd) {
+  for (size_t i = *hd; i < line[actual].size() && urlline[i]; i++, (*hd)++)
+    ;
+  return checkurl ? 0 : urlline[token_pos];
+}
+
+void TextParser::set_url_checking(int check) {
+  checkurl = check;
+}
+
+bool TextParser::alloc_token(size_t tokn, size_t* hd, std::string& t) {
+  size_t url_head = *hd;
+  if (get_url(tokn, &url_head))
+    return false;
+  t = line[actual].substr(tokn, *hd - tokn);
+  // remove colon for Finnish and Swedish language
+  if (!t.empty() && t[t.size() - 1] == ':') {
+    t.resize(t.size() - 1);
+    if (t.empty()) {
+      return false;
+    }
+  }
+  return true;
+}