| 1 | /* Lexical analyzer */ |
| 2 | |
| 3 | #include <stdlib.h> |
| 4 | #include <stdbool.h> |
| 5 | |
| 6 | #include "global_vars.h" |
| 7 | #include "print_helper.h" |
| 8 | #include "lexical_analyzer.h" |
| 9 | |
| 10 | wint_t c; |
| 11 | |
| 12 | /* It looks silly to check for each characters but for debugging, it's just the way to go */ |
| 13 | static bool isAlphaNum() { |
| 14 | if (c == L'a' || c == L'b' || c == L'c' || c == L'd' || c == L'e' || c == L'f' || c == L'g' || \ |
| 15 | c == L'h' || c == L'i' || c == L'j' || c == L'k' || c == L'l' || c == L'm' || c == L'n' || \ |
| 16 | c == L'o' || c == L'p' || c == L'q' || c == L'r' || c == L's' || c == L't' || c == L'u' || \ |
| 17 | c == L'v' || c == L'w' || c == L'x' || c == L'y' || c == L'z' || \ |
| 18 | c == L'A' || c == L'B' || c == L'C' || c == L'D' || c == L'E' || c == L'F' || c == L'G' || \ |
| 19 | c == L'H' || c == L'I' || c == L'J' || c == L'K' || c == L'L' || c == L'M' || c == L'N' || \ |
| 20 | c == L'O' || c == L'P' || c == L'Q' || c == L'R' || c == L'S' || c == L'T' || c == L'U' || \ |
| 21 | c == L'V' || c == L'W' || c == L'X' || c == L'Y' || c == L'Z' || \ |
| 22 | c == L'.' || c == L'?' || c == L'!' || c == L',' || c == L';' || c == L':' || c == L'-' || \ |
| 23 | c == L'\''|| c == L'#' || \ |
| 24 | c == L'0' || c == L'1' || c == L'2' || c == L'3' || c == L'4' || c == L'5' || c == L'6' || \ |
| 25 | c == L'7' || c == L'8' || c == L'9' || \ |
| 26 | //FIXME: Accentued characters (aka multibytes characters) support is still buggy |
| 27 | c == L'à' || c == L'â' || c == L'ç' || c == L'è' || c == L'é' || c == L'î' || c == L'ô' || \ |
| 28 | c == L'ù' || c == L'û' || \ |
| 29 | c == L'À' || c == L'Â' || c == L'Ç' || c == L'È' || c == L'É' || c == L'Î' || c == L'Ô' || \ |
| 30 | c == L'Ù' || c == L'Û') { |
| 31 | return true; |
| 32 | } |
| 33 | return false; |
| 34 | } |
| 35 | |
| 36 | static bool isSeparator() { |
| 37 | if (c == L'\t' || c == L' ' || c == L'\n') { |
| 38 | return true; |
| 39 | } |
| 40 | return false; |
| 41 | } |
| 42 | |
| 43 | static bool isEOF() { |
| 44 | if (c == WEOF) { |
| 45 | return true; |
| 46 | } |
| 47 | return false; |
| 48 | } |
| 49 | |
| 50 | int scanner(void) { |
| 51 | tokenValue[0] = 0; |
| 52 | unsigned int i = 0; |
| 53 | wchar_t m[6]; |
| 54 | |
| 55 | init: |
| 56 | if (c == L' ' || c == L'\t') { |
| 57 | c = fgetwc(source); |
| 58 | goto init; |
| 59 | } |
| 60 | if (c == L'\n') { |
| 61 | c = fgetwc(source); |
| 62 | goto initLV1; |
| 63 | } |
| 64 | if (c == L'>') { |
| 65 | c = fgetwc(source); |
| 66 | goto MC1; |
| 67 | } |
| 68 | if (c == L'=') { |
| 69 | c = fgetwc(source); |
| 70 | goto S1SS1; |
| 71 | } |
| 72 | if (isAlphaNum()) { |
| 73 | tokenValue[i] = c; |
| 74 | i++; |
| 75 | c = fgetwc(source); |
| 76 | goto M1; |
| 77 | } |
| 78 | if (isEOF()) { |
| 79 | goto FIN; |
| 80 | } |
| 81 | goto error; |
| 82 | |
| 83 | MC1: |
| 84 | if (c == L'A' && !wcscmp(fgetws(m, 6, source), L"uteur")) { |
| 85 | wcscpy((wchar_t*)tokenValue, L">Auteur"); |
| 86 | c = fgetwc(source); |
| 87 | goto MC2; |
| 88 | } |
| 89 | if (c == L'T' && !wcscmp(fgetws(m, 5, source), L"itre")) { |
| 90 | wcscpy((wchar_t*)tokenValue, L">Titre"); |
| 91 | c = fgetwc(source); |
| 92 | goto MC2; |
| 93 | } |
| 94 | goto error; |
| 95 | |
| 96 | S1SS1: |
| 97 | if (c == L'=') { |
| 98 | c = fgetwc(source); |
| 99 | goto SS2; |
| 100 | } |
| 101 | if (isSeparator() || isEOF()) { |
| 102 | goto SECTION; |
| 103 | } |
| 104 | goto error; |
| 105 | |
| 106 | SS2: |
| 107 | if (isSeparator() || isEOF()) { |
| 108 | goto SSECTION; |
| 109 | } |
| 110 | goto error; |
| 111 | |
| 112 | SECTION: |
| 113 | tokenType = SECTION; |
| 114 | return EXIT_SUCCESS; |
| 115 | |
| 116 | SSECTION: |
| 117 | tokenType = SSECTION; |
| 118 | return EXIT_SUCCESS; |
| 119 | |
| 120 | M1: |
| 121 | if (isAlphaNum()) { |
| 122 | tokenValue[i] = c; |
| 123 | i++; |
| 124 | c = fgetwc(source); |
| 125 | goto M1; |
| 126 | } |
| 127 | if (isSeparator() || isEOF()) { |
| 128 | goto MOT; |
| 129 | } |
| 130 | goto error; |
| 131 | |
| 132 | initLV1: |
| 133 | if (c == L' ' || c == L'\t') { |
| 134 | c = fgetwc(source); |
| 135 | goto initLV1; |
| 136 | } |
| 137 | if (c == L'\n') { |
| 138 | c = fgetwc(source); |
| 139 | goto initLV1LV2; |
| 140 | } |
| 141 | if (isAlphaNum()) { |
| 142 | tokenValue[i] = c; |
| 143 | i++; |
| 144 | c = fgetwc(source); |
| 145 | goto M1; |
| 146 | } |
| 147 | if (c == L'=') { |
| 148 | c = fgetwc(source); |
| 149 | goto S1SS1; |
| 150 | } |
| 151 | if (c == L'>') { |
| 152 | c = fgetwc(source); |
| 153 | goto MC1; |
| 154 | } |
| 155 | if (isEOF()) { |
| 156 | goto FIN; |
| 157 | } |
| 158 | goto error; |
| 159 | |
| 160 | initLV1LV2: |
| 161 | if (isSeparator()) { |
| 162 | c = fgetwc(source); |
| 163 | goto initLV1LV2; |
| 164 | } |
| 165 | if (isAlphaNum()) { |
| 166 | goto NPARA; |
| 167 | } |
| 168 | if (c == L'>') { |
| 169 | c = fgetwc(source); |
| 170 | goto MC1; |
| 171 | } |
| 172 | if (c == L'=') { |
| 173 | c = fgetwc(source); |
| 174 | goto S1SS1; |
| 175 | } |
| 176 | if (isEOF()) { |
| 177 | goto FIN; |
| 178 | } |
| 179 | goto error; |
| 180 | |
| 181 | NPARA: |
| 182 | tokenType = NPARA; |
| 183 | return EXIT_SUCCESS; |
| 184 | |
| 185 | MOT: |
| 186 | tokenType = MOT; |
| 187 | tokenValue[i] = 0; |
| 188 | wcscpy((wchar_t*)token[tokenFound].value, (wchar_t*)tokenValue); |
| 189 | return EXIT_SUCCESS; |
| 190 | |
| 191 | MC2: |
| 192 | if (isSeparator() || isEOF()) { |
| 193 | goto MOTCLE; |
| 194 | } |
| 195 | goto error; |
| 196 | |
| 197 | MOTCLE: |
| 198 | tokenType = MOTCLE; |
| 199 | wcscpy((wchar_t*)token[tokenFound].value, (wchar_t*)tokenValue); |
| 200 | return EXIT_SUCCESS; |
| 201 | |
| 202 | FIN: |
| 203 | tokenType = FIN; |
| 204 | return EXIT_SUCCESS; |
| 205 | |
| 206 | error: |
| 207 | if (tokenType == MOT || tokenType == MOTCLE) { |
| 208 | fwprintf(stderr, L"%s error with token type: %s and value: %ls\n", |
| 209 | __func__, |
| 210 | tokenTypestr[tokenType], |
| 211 | tokenValue); |
| 212 | } else { |
| 213 | fwprintf(stderr, L"%s error with token type: %s\n", |
| 214 | __func__, |
| 215 | tokenTypestr[tokenType]); |
| 216 | } |
| 217 | fflush(stderr); |
| 218 | tokenType = FIN; |
| 219 | exit(EXIT_FAILURE); |
| 220 | } |