| /* ***** 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 "latexparser.hxx" |
| |
| #ifndef W32 |
| using namespace std; |
| #endif |
| |
| static struct { |
| const char* pat[2]; |
| int arg; |
| } PATTERN[] = {{{"\\(", "\\)"}, 0}, |
| {{"$$", "$$"}, 0}, |
| {{"$", "$"}, 0}, |
| {{"\\begin{math}", "\\end{math}"}, 0}, |
| {{"\\[", "\\]"}, 0}, |
| {{"\\begin{displaymath}", "\\end{displaymath}"}, 0}, |
| {{"\\begin{equation}", "\\end{equation}"}, 0}, |
| {{"\\begin{equation*}", "\\end{equation*}"}, 0}, |
| {{"\\cite", NULL}, 1}, |
| {{"\\nocite", NULL}, 1}, |
| {{"\\index", NULL}, 1}, |
| {{"\\label", NULL}, 1}, |
| {{"\\ref", NULL}, 1}, |
| {{"\\pageref", NULL}, 1}, |
| {{"\\autoref", NULL}, 1}, |
| {{"\\parbox", NULL}, 1}, |
| {{"\\begin{verbatim}", "\\end{verbatim}"}, 0}, |
| {{"\\verb+", "+"}, 0}, |
| {{"\\verb|", "|"}, 0}, |
| {{"\\verb#", "#"}, 0}, |
| {{"\\verb*", "*"}, 0}, |
| {{"\\documentstyle", "\\begin{document}"}, 0}, |
| {{"\\documentclass", "\\begin{document}"}, 0}, |
| // { { "\\documentclass", NULL } , 1 }, |
| {{"\\usepackage", NULL}, 1}, |
| {{"\\includeonly", NULL}, 1}, |
| {{"\\include", NULL}, 1}, |
| {{"\\input", NULL}, 1}, |
| {{"\\vspace", NULL}, 1}, |
| {{"\\setlength", NULL}, 2}, |
| {{"\\addtolength", NULL}, 2}, |
| {{"\\settowidth", NULL}, 2}, |
| {{"\\rule", NULL}, 2}, |
| {{"\\hspace", NULL}, 1}, |
| {{"\\vspace", NULL}, 1}, |
| {{"\\\\[", "]"}, 0}, |
| {{"\\pagebreak[", "]"}, 0}, |
| {{"\\nopagebreak[", "]"}, 0}, |
| {{"\\enlargethispage", NULL}, 1}, |
| {{"\\begin{tabular}", NULL}, 1}, |
| {{"\\addcontentsline", NULL}, 2}, |
| {{"\\begin{thebibliography}", NULL}, 1}, |
| {{"\\bibliography", NULL}, 1}, |
| {{"\\bibliographystyle", NULL}, 1}, |
| {{"\\bibitem", NULL}, 1}, |
| {{"\\begin", NULL}, 1}, |
| {{"\\end", NULL}, 1}, |
| {{"\\pagestyle", NULL}, 1}, |
| {{"\\pagenumbering", NULL}, 1}, |
| {{"\\thispagestyle", NULL}, 1}, |
| {{"\\newtheorem", NULL}, 2}, |
| {{"\\newcommand", NULL}, 2}, |
| {{"\\renewcommand", NULL}, 2}, |
| {{"\\setcounter", NULL}, 2}, |
| {{"\\addtocounter", NULL}, 1}, |
| {{"\\stepcounter", NULL}, 1}, |
| {{"\\selectlanguage", NULL}, 1}, |
| {{"\\inputencoding", NULL}, 1}, |
| {{"\\hyphenation", NULL}, 1}, |
| {{"\\definecolor", NULL}, 3}, |
| {{"\\color", NULL}, 1}, |
| {{"\\textcolor", NULL}, 1}, |
| {{"\\pagecolor", NULL}, 1}, |
| {{"\\colorbox", NULL}, 2}, |
| {{"\\fcolorbox", NULL}, 2}, |
| {{"\\declaregraphicsextensions", NULL}, 1}, |
| {{"\\psfig", NULL}, 1}, |
| {{"\\url", NULL}, 1}, |
| {{"\\eqref", NULL}, 1}, |
| {{"\\vskip", NULL}, 1}, |
| {{"\\vglue", NULL}, 1}, |
| {{"\'\'", NULL}, 1}}; |
| |
| #define PATTERN_LEN (sizeof(PATTERN) / sizeof(PATTERN[0])) |
| |
| LaTeXParser::LaTeXParser(const char* wordchars) |
| : TextParser(wordchars) |
| , pattern_num(0), depth(0), arg(0), opt(0) { |
| } |
| |
| LaTeXParser::LaTeXParser(const w_char* wordchars, int len) |
| : TextParser(wordchars, len) |
| , pattern_num(0), depth(0), arg(0), opt(0) { |
| } |
| |
| LaTeXParser::~LaTeXParser() {} |
| |
| int LaTeXParser::look_pattern(int col) { |
| for (unsigned int i = 0; i < PATTERN_LEN; i++) { |
| const char* j = line[actual].c_str() + head; |
| const char* k = PATTERN[i].pat[col]; |
| if (!k) |
| continue; |
| while ((*k != '\0') && (tolower(*j) == *k)) { |
| j++; |
| k++; |
| } |
| if (*k == '\0') |
| return i; |
| } |
| return -1; |
| } |
| |
| /* |
| * LaTeXParser |
| * |
| * state 0: not wordchar |
| * state 1: wordchar |
| * state 2: comments |
| * state 3: commands |
| * state 4: commands with arguments |
| * state 5: % comment |
| * |
| */ |
| |
| bool LaTeXParser::next_token(std::string& t) { |
| t.clear(); |
| int i; |
| int slash = 0; |
| int apostrophe; |
| for (;;) { |
| // fprintf(stderr,"depth: %d, state: %d, , arg: %d, token: |
| // %s\n",depth,state,arg,line[actual]+head); |
| |
| switch (state) { |
| case 0: // non word chars |
| if ((pattern_num = look_pattern(0)) != -1) { |
| if (PATTERN[pattern_num].pat[1]) { |
| state = 2; |
| } else { |
| state = 4; |
| depth = 0; |
| arg = 0; |
| opt = 1; |
| } |
| head += strlen(PATTERN[pattern_num].pat[0]) - 1; |
| } else if (line[actual][head] == '%') { |
| state = 5; |
| } else if (is_wordchar(line[actual].c_str() + head)) { |
| state = 1; |
| token = head; |
| } else if (line[actual][head] == '\\') { |
| if (line[actual][head + 1] == '\\' || // \\ (linebreak) |
| (line[actual][head + 1] == '$') || // \$ (dollar sign) |
| (line[actual][head + 1] == '%')) { // \% (percent) |
| head++; |
| break; |
| } |
| state = 3; |
| } |
| break; |
| case 1: // wordchar |
| apostrophe = 0; |
| if (!is_wordchar(line[actual].c_str() + head) || |
| (line[actual][head] == '\'' && line[actual][head + 1] == '\'' && |
| ++apostrophe)) { |
| state = 0; |
| bool ok = alloc_token(token, &head, t); |
| if (apostrophe) |
| head += 2; |
| if (ok) |
| return true; |
| } |
| break; |
| case 2: // comment, labels, etc |
| if (((i = look_pattern(1)) != -1) && |
| (strcmp(PATTERN[i].pat[1], PATTERN[pattern_num].pat[1]) == 0)) { |
| state = 0; |
| head += strlen(PATTERN[pattern_num].pat[1]) - 1; |
| } |
| break; |
| case 3: // command |
| if ((tolower(line[actual][head]) < 'a') || |
| (tolower(line[actual][head]) > 'z')) { |
| state = 0; |
| head--; |
| } |
| break; |
| case 4: // command with arguments |
| if (slash && (line[actual][head] != '\0')) { |
| slash = 0; |
| head++; |
| break; |
| } else if (line[actual][head] == '\\') { |
| slash = 1; |
| } else if ((line[actual][head] == '{') || |
| ((opt) && (line[actual][head] == '['))) { |
| depth++; |
| opt = 0; |
| } else if (line[actual][head] == '}') { |
| depth--; |
| if (depth == 0) { |
| opt = 1; |
| arg++; |
| } |
| if (((depth == 0) && (arg == PATTERN[pattern_num].arg)) || |
| (depth < 0)) { |
| state = 0; // XXX not handles the last optional arg. |
| } |
| } else if (line[actual][head] == ']') |
| depth--; |
| } // case |
| if (next_char(line[actual].c_str(), &head)) { |
| if (state == 5) |
| state = 0; |
| return false; |
| } |
| } |
| } |
