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1 /* |
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
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3 * |
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4 * Copyright 2014 Mike Becker. All rights reserved. |
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5 * |
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6 * Redistribution and use in source and binary forms, with or without |
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7 * modification, are permitted provided that the following conditions are met: |
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8 * |
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9 * 1. Redistributions of source code must retain the above copyright |
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10 * notice, this list of conditions and the following disclaimer. |
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11 * |
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12 * 2. Redistributions in binary form must reproduce the above copyright |
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13 * notice, this list of conditions and the following disclaimer in the |
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14 * documentation and/or other materials provided with the distribution. |
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15 * |
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 * POSSIBILITY OF SUCH DAMAGE. |
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27 * |
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28 */ |
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29 |
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30 #include "ccodegen.h" |
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31 #include <string.h> |
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32 #include <ctype.h> |
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33 |
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34 const char* ckeywords[] = { |
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35 "auto", "break", "case", "char", "const", "continue", "default", "do", |
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36 "double", "else", "enum", "extern", "float", "for", "goto", "if", "int", |
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37 "long", "register", "return", "short", "signed", "sizeof", "static", |
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38 "struct", "switch", "typedef", "union", "unsigned", "void", "volatile", |
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39 "while", NULL |
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40 }; |
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41 |
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42 int isctype(char *word, size_t len) { |
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43 return (word[len-2] == '_' && word[len-1] == 't'); |
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44 } |
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45 |
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46 int iscdirective(char *word) { |
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47 return (word[0] == '#'); |
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48 } |
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49 |
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50 void cparseline(char *src, char *dest, highlighter_t *hltr) { |
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51 size_t sp = 0, dp = 0; |
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52 /* indent */ |
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53 while (isspace(src[sp])) { |
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54 dest[dp++] = src[sp++]; |
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55 } |
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56 |
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57 memset(hltr->word, 0, WORDBUF_SIZE); |
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58 size_t wp = 0, ifp = 0; |
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59 int isstring = 0, iscomment = 0, isinclude = 0, parseinclude = 0; |
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60 int isescaping = 0; |
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61 |
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62 if (hltr->iscommentml) { |
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63 iscomment = 1; |
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64 memcpy(&(dest[dp]), "<span class=\"c2html-comment\">", 29); |
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65 dp += 29; |
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66 } |
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67 |
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68 for (char c = src[sp] ; c ; c=src[++sp]) { |
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69 /* comments */ |
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70 if (c == '/') { |
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71 if (hltr->iscommentml && sp > 0 && src[sp-1] == '*') { |
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72 iscomment = 0; |
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73 hltr->iscommentml = 0; |
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74 memcpy(&(dest[dp]), "/</span>", 8); |
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75 dp += 8; |
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76 continue; |
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77 } else if (!iscomment && (src[sp+1] == '/' || src[sp+1] == '*')) { |
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78 iscomment = 1; |
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79 hltr->iscommentml = (src[sp+1] == '*'); |
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80 memcpy(&(dest[dp]), "<span class=\"c2html-comment\">", 29); |
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81 dp += 29; |
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82 } |
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83 } |
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84 |
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85 if (iscomment) { |
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86 if (c == '\n') { |
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87 memcpy(&(dest[dp]), "</span>", 7); |
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88 dp += 7; |
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89 } |
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90 dp = writeescapedchar(dest, dp, c); |
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91 } else if (isinclude) { |
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92 if (c == '<') { |
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93 memcpy(&(dest[dp]), "<span class=\"c2html-stdinclude\">", 32); |
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94 dp += 32; |
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95 dp = writeescapedchar(dest, dp, c); |
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96 } else if (c == '\"') { |
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97 if (parseinclude) { |
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98 dest[dp++] = '\"'; |
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99 dest[dp++] = '>'; |
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100 memcpy(&(dest[dp]), hltr->includefile, ifp); |
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101 dp += ifp; |
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102 |
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103 dp = writeescapedchar(dest, dp, c); |
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104 memcpy(&(dest[dp]), "</a>", 4); |
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105 dp += 4; |
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106 parseinclude = 0; |
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107 } else { |
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108 memcpy(&(dest[dp]), |
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109 "<a class=\"c2html-userinclude\" href=", 35); |
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110 dp += 35; |
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111 dp = writeescapedchar(dest, dp, c); |
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112 ifp = 0; |
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113 hltr->includefile[ifp++] = '\"'; |
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114 parseinclude = 1; |
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115 } |
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116 } else if (c == '>') { |
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117 dp = writeescapedchar(dest, dp, c); |
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118 memcpy(&(dest[dp]), "</span>", 7); |
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119 dp += 7; |
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120 } else { |
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121 if (parseinclude) { |
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122 hltr->includefile[ifp++] = c; |
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123 } |
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124 dp = writeescapedchar(dest, dp, c); |
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125 } |
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126 } else { |
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127 /* strings */ |
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128 if (!isescaping && (c == '\'' || c == '\"')) { |
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129 isstring ^= 1; |
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130 if (isstring) { |
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131 memcpy(&(dest[dp]), "<span class=\"c2html-string\">", 28); |
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132 dp += 28; |
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133 dp = writeescapedchar(dest, dp, c); |
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134 } else { |
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135 dp = writeescapedchar(dest, dp, c); |
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136 memcpy(&(dest[dp]), "</span>", 7); |
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137 dp += 7; |
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138 } |
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139 } else { |
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140 if (isstring) { |
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141 dp = writeescapedchar(dest, dp, c); |
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142 } else if (!iswordcharacter(c)) { |
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143 /* interpret word int_t */ |
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144 if (wp > 0 && wp < WORDBUF_SIZE) { |
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145 int closespan = 1; |
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146 if (iskeyword(hltr->word, hltr->keywords)) { |
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147 memcpy(&(dest[dp]), |
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148 "<span class=\"c2html-keyword\">", 29); |
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149 dp += 29; |
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150 } else if (hltr->istype(hltr->word, wp)) { |
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151 memcpy(&(dest[dp]), |
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152 "<span class=\"c2html-type\">", 26); |
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153 dp += 26; |
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154 } else if (hltr->isdirective(hltr->word)) { |
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155 isinclude = !strncmp( |
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156 "#include", hltr->word, WORDBUF_SIZE); |
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157 memcpy(&(dest[dp]), |
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158 "<span class=\"c2html-directive\">", 31); |
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159 dp += 31; |
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160 } else if (iscapsonly(hltr->word, wp)) { |
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161 memcpy(&(dest[dp]), |
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162 "<span class=\"c2html-macroconst\">", 32); |
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163 dp += 32; |
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164 } else { |
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165 closespan = 0; |
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166 } |
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167 for (int i = 0 ; i < wp ; i++) { |
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168 dp = writeescapedchar(dest, dp, hltr->word[i]); |
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169 } |
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170 if (closespan) { |
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171 memcpy(&(dest[dp]), "</span>", 7); |
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172 dp += 7; |
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173 } |
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174 } |
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175 memset(hltr->word, 0, WORDBUF_SIZE); |
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176 wp = 0; |
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177 dp = writeescapedchar(dest, dp, c); |
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178 } else { |
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179 /* read word */ |
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180 if (wp < WORDBUF_SIZE) { |
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181 hltr->word[wp++] = c; |
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182 } else if (wp == WORDBUF_SIZE) { |
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183 for (int i = 0 ; i < WORDBUF_SIZE ; i++) { |
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184 dp = writeescapedchar(dest, dp, hltr->word[i]); |
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185 } |
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186 wp++; |
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187 dp = writeescapedchar(dest, dp, c); |
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188 } else { |
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189 dp = writeescapedchar(dest, dp, c); |
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190 } |
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191 } |
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192 } |
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193 |
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194 isescaping = !isescaping & (c == '\\'); |
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195 } |
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196 } |
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197 dest[dp] = 0; |
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198 } |