universe@21: /*
universe@21:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@21:  *
universe@35:  * Copyright 2016 Mike Becker. All rights reserved.
universe@21:  *
universe@21:  * Redistribution and use in source and binary forms, with or without
universe@21:  * modification, are permitted provided that the following conditions are met:
universe@21:  *
universe@21:  *   1. Redistributions of source code must retain the above copyright
universe@21:  *      notice, this list of conditions and the following disclaimer.
universe@21:  *
universe@21:  *   2. Redistributions in binary form must reproduce the above copyright
universe@21:  *      notice, this list of conditions and the following disclaimer in the
universe@21:  *      documentation and/or other materials provided with the distribution.
universe@21:  *
universe@21:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@21:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@21:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@21:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@21:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@21:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@21:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@21:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@21:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@21:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@21:  * POSSIBILITY OF SUCH DAMAGE.
universe@21:  *
universe@21:  */
universe@21: 
universe@21: #include "ccodegen.h"
universe@21: 
universe@21: const char* ckeywords[] = {
universe@21:     "auto", "break", "case", "char", "const", "continue", "default", "do",
universe@21:     "double", "else", "enum", "extern", "float", "for", "goto", "if", "int",
universe@21:     "long", "register", "return", "short", "signed", "sizeof", "static",
universe@21:     "struct", "switch", "typedef", "union", "unsigned", "void", "volatile",
universe@21:     "while", NULL
universe@21: };
universe@21: 
universe@48: void c_highlighter(char *src, UcxBuffer *dest, int *multiline_comment) {
universe@47:     /* TODO: try to replace these buffers */
universe@47:     char wordbuf[WORDBUF_SIZE];
universe@47:     sstr_t word;
universe@47:     word.ptr = wordbuf; word.length = 0;
universe@47:     
universe@47:     char includefilebuf[512];
universe@47:     sstr_t includefile;
universe@47:     includefile.ptr = includefilebuf;
universe@47:     includefile.length = 0;
universe@47:     
universe@48:     size_t sp = (size_t)-1;
universe@21:     int isstring = 0, iscomment = 0, isinclude = 0, parseinclude = 0;
universe@28:     char quote = '\0';
universe@21:     int isescaping = 0;
universe@31:     
universe@31:     /* continue a multi line comment highlighting */
universe@47:     if (*multiline_comment) {
universe@21:         iscomment = 1;
universe@48:         ucx_buffer_puts(dest, "<span class=\"c2html-comment\">");
universe@21:     }
universe@21: 
universe@39:     char c;
universe@39:     do {
universe@39:         c = src[++sp];
universe@39:         if (!c) break;
universe@39:         
universe@21:         /* comments */
universe@26:         if (!isstring && c == '/') {
universe@47:             if (*multiline_comment && sp > 0 && src[sp-1] == '*') {
universe@21:                 iscomment = 0;
universe@47:                 *multiline_comment = 0;
universe@48:                 ucx_buffer_puts(dest, "/</span>");
universe@21:                 continue;
universe@21:             } else if (!iscomment && (src[sp+1] == '/' || src[sp+1] == '*')) {
universe@21:                 iscomment = 1;
universe@47:                 *multiline_comment = (src[sp+1] == '*');
universe@48:                 ucx_buffer_puts(dest, "<span class=\"c2html-comment\">");
universe@21:             }
universe@21:         }
universe@21: 
universe@21:         if (iscomment) {
universe@21:             if (c == '\n') {
universe@48:                 ucx_buffer_puts(dest, "</span>\n");
universe@48:             } else {
universe@48:                 put_htmlescaped(dest, c);
universe@21:             }
universe@21:         } else if (isinclude) {
universe@21:             if (c == '<') {
universe@48:                 ucx_buffer_puts(dest,
universe@48:                         "<span class=\"c2html-stdinclude\">&lt;");
universe@21:             } else if (c == '\"') {
universe@21:                 if (parseinclude) {
universe@48:                     ucx_bprintf(dest, "\">%.*s\"</a>",
universe@48:                             includefile.length, includefile.ptr);
universe@21:                     parseinclude = 0;
universe@21:                 } else {
universe@48:                     ucx_buffer_puts(dest,
universe@48:                             "<a class=\"c2html-userinclude\" href=\"");
universe@47:                     includefile.length = 0;
universe@47:                     includefile.ptr[includefile.length++] = '\"';
universe@21:                     parseinclude = 1;
universe@21:                 }
universe@21:             } else if (c == '>') {
universe@48:                 ucx_buffer_puts(dest,  "&gt;</span>");
universe@21:             } else {
universe@21:                 if (parseinclude) {
universe@47:                     includefile.ptr[includefile.length++] = c;
universe@21:                 }
universe@48:                 put_htmlescaped(dest, c);
universe@21:             }
universe@21:         } else {
universe@21:             /* strings */
universe@21:             if (!isescaping && (c == '\'' || c == '\"')) {
universe@21:                 if (isstring) {
universe@48:                     put_htmlescaped(dest, c);
universe@28:                     if (c == quote) {
universe@28:                         isstring = 0;
universe@48:                         ucx_buffer_puts(dest, "</span>");
universe@28:                     } else {
universe@48:                         put_htmlescaped(dest, c);
universe@28:                     }
universe@21:                 } else {
universe@28:                     isstring = 1;
universe@28:                     quote = c;
universe@48:                     ucx_buffer_puts(dest, "<span class=\"c2html-string\">");
universe@48:                     put_htmlescaped(dest, c);
universe@21:                 }
universe@21:             } else {
universe@21:                 if (isstring) {
universe@48:                     put_htmlescaped(dest, c);
universe@50:                 } else if (!isalnum(c) && c!='_' && c!='#' && c!='@') {
universe@47:                     if (word.length > 0 && word.length < WORDBUF_SIZE) {
universe@21:                         int closespan = 1;
universe@47:                         sstr_t typesuffix = ST("_t");
universe@47:                         if (check_keyword(word, ckeywords)) {
universe@48:                             ucx_buffer_puts(dest,
universe@48:                                     "<span class=\"c2html-keyword\">");
universe@47:                         } else if (sstrsuffix(word, typesuffix)) {
universe@48:                             ucx_buffer_puts(dest,
universe@29:                                 "<span class=\"c2html-type\">");
universe@47:                         } else if (word.ptr[0] == '#') {
universe@47:                             isinclude = !sstrcmp(word, S("#include"));
universe@48:                             ucx_buffer_puts(dest,
universe@29:                                 "<span class=\"c2html-directive\">");
universe@47:                         } else if (check_capsonly(word)) {
universe@48:                             ucx_buffer_puts(dest,
universe@29:                                 "<span class=\"c2html-macroconst\">");
universe@21:                         } else {
universe@21:                             closespan = 0;
universe@21:                         }
universe@48:                         put_htmlescapedstr(dest, word);
universe@21:                         if (closespan) {
universe@48:                             ucx_buffer_puts(dest, "</span>");
universe@21:                         }
universe@21:                     }
universe@47:                     word.length = 0;
universe@48:                     put_htmlescaped(dest, c);
universe@21:                 } else {
universe@21:                     /* read word */
universe@47:                     if (word.length < WORDBUF_SIZE) {
universe@47:                         word.ptr[word.length++] = c;
universe@47:                     } else if (word.length == WORDBUF_SIZE) {
universe@48:                         /* TODO: this will be removed */
universe@48:                         ucx_buffer_puts(dest,
universe@48:                                 "!!! WARNING - WORD TOO LONG TO PARSE !!!");
universe@48:                         word.length = 0;
universe@21:                     } else {
universe@48:                         put_htmlescaped(dest, c);
universe@21:                     }
universe@21:                 }
universe@21:             }
universe@21: 
universe@21:             isescaping = !isescaping & (c == '\\');
universe@21:         }
universe@39:     } while (c != '\n');
universe@21: }