| 1 | /* depend: */ |
| 2 | /* cflags: */ |
| 3 | /* linker: debug.o parser.o -lm -lreadline */ |
| 4 | |
| 5 | #include <malloc.h> |
| 6 | #include <stddef.h> |
| 7 | #include <stdio.h> |
| 8 | #include <stdlib.h> |
| 9 | #include <unistd.h> |
| 10 | |
| 11 | #include <readline/readline.h> |
| 12 | #include <readline/history.h> |
| 13 | |
| 14 | #include "debug.h" |
| 15 | #include "parser.h" |
| 16 | |
| 17 | /* constants */ |
| 18 | |
| 19 | #define BUFFER_SIZE 4096 |
| 20 | #define HISTORY_LEN 10 |
| 21 | |
| 22 | /* macros */ |
| 23 | |
| 24 | #define CEIL(x, y) (((x) + (y) - 1) / (y)) |
| 25 | #define MIN(x, y) (((x) < (y)) ? (x) : (y)) |
| 26 | #define MAX(x, y) (((x) > (y)) ? (x) : (y)) |
| 27 | |
| 28 | /* gobal variables */ |
| 29 | |
| 30 | char *progname = NULL; |
| 31 | int mode = 1; |
| 32 | int precision = 6; |
| 33 | |
| 34 | /* help function */ |
| 35 | |
| 36 | int usage (int ret) |
| 37 | { |
| 38 | FILE *fid = ret ? stderr : stdout; |
| 39 | fprintf (fid, "usage: %s\n", progname); |
| 40 | fprintf (fid, " -h : help message\n"); |
| 41 | fprintf (fid, " -n : no readline mode (%s)\n", mode ? "yes" : "no"); |
| 42 | fprintf (fid, " -p : precision (%d)\n", precision); |
| 43 | fprintf (fid, " -v : verbose level (%d)\n", verbose); |
| 44 | |
| 45 | return ret; |
| 46 | } |
| 47 | |
| 48 | /* main function */ |
| 49 | |
| 50 | int main (int argc, char *argv[]) |
| 51 | { |
| 52 | char *buffer = NULL; |
| 53 | char buffer_static[BUFFER_SIZE + 1] = {0}; |
| 54 | int i = 0, nb = 1; |
| 55 | int ret = 0; |
| 56 | |
| 57 | /* program name */ |
| 58 | |
| 59 | progname = argv[0]; |
| 60 | while (progname[i] != '\0') { |
| 61 | if ((progname[i] == '/') || (progname[i] == '\\')) { |
| 62 | progname += i + 1; |
| 63 | i = 0; |
| 64 | } else { |
| 65 | i++; |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | /* argument processing */ |
| 70 | |
| 71 | while (argc-- > 1) { |
| 72 | char *arg = *(++argv); |
| 73 | if (arg[0] != '-') { |
| 74 | fprintf (stderr, "%s: invalid option -- '%s'\n", progname, arg); |
| 75 | return usage (1); |
| 76 | } |
| 77 | char c = arg[1]; |
| 78 | switch (c) { |
| 79 | case 'n': |
| 80 | mode = 0; |
| 81 | buffer = buffer_static; |
| 82 | break; |
| 83 | case 'p': |
| 84 | arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL; |
| 85 | if (arg == NULL) { |
| 86 | fprintf (stderr, "%s: missing precision\n", progname); |
| 87 | return usage (1); |
| 88 | } |
| 89 | precision = atoi (arg); |
| 90 | break; |
| 91 | case 'v': |
| 92 | arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL; |
| 93 | if (arg == NULL) { |
| 94 | fprintf (stderr, "%s: missing verbose level\n", progname); |
| 95 | return usage (1); |
| 96 | } |
| 97 | verbose = atoi (arg); |
| 98 | break; |
| 99 | case 'h': |
| 100 | default: |
| 101 | return usage (c != 'h'); |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | /* format */ |
| 106 | char format[9] = "=> %..g\n"; |
| 107 | format[5] = '0' + precision; |
| 108 | |
| 109 | /* read from input stream */ |
| 110 | |
| 111 | while (1) { |
| 112 | char *line[BUFFER_SIZE] = {0}; |
| 113 | |
| 114 | if (mode) { |
| 115 | if ((buffer = readline ("<= ")) == NULL) { |
| 116 | break; |
| 117 | } |
| 118 | |
| 119 | /* check empty line */ |
| 120 | if (strlen (buffer) == 0) { |
| 121 | free (buffer); |
| 122 | continue; |
| 123 | } else if (strcmp (buffer, ".") == 0) { |
| 124 | break; |
| 125 | } |
| 126 | line[0] = buffer; |
| 127 | nb = 1; |
| 128 | |
| 129 | /* add line into history */ |
| 130 | add_history (buffer); |
| 131 | VERBOSE (INFO, fprintf (stdout, "line (%d/%d): '%s'\n", |
| 132 | where_history (), history_length, buffer)); |
| 133 | if (history_length > HISTORY_LEN) { |
| 134 | HIST_ENTRY *last = remove_history (0); |
| 135 | if (last) { |
| 136 | free_history_entry (last); |
| 137 | } |
| 138 | } |
| 139 | } else { |
| 140 | if (read (STDIN_FILENO, buffer, BUFFER_SIZE) == 0) { |
| 141 | break; |
| 142 | } |
| 143 | nb = 0; |
| 144 | char *pt = line[nb++] = buffer; |
| 145 | while (*pt != '\0') { |
| 146 | if (*pt == '\n') { |
| 147 | *pt = '\0'; |
| 148 | line[nb++] = pt + 1; |
| 149 | } |
| 150 | pt++; |
| 151 | } |
| 152 | VERBOSE (INFO, fprintf (stdout, "line: '%s'\n", buffer)); |
| 153 | } |
| 154 | |
| 155 | /* look for end of line */ |
| 156 | for (i = 0; i < nb; i++) { |
| 157 | if (*line[i] == '\0') { |
| 158 | continue; |
| 159 | } |
| 160 | element_t *element = parser (line[i], NULL, 0); |
| 161 | if (element == ERROR_OP) { |
| 162 | VERBOSE (WARNING, fprintf (stdout, "error while parsing: '%s'\n", line[i]); fflush (stdout)); |
| 163 | ret = 1; |
| 164 | } else { |
| 165 | VERBOSE (INFO, print_element (element, 0)); |
| 166 | answer = evaluate_element (element, 0); |
| 167 | fprintf (stdout, format, answer); |
| 168 | fflush (stdout); |
| 169 | delelement (element); |
| 170 | ret = 0; |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | if (mode) { |
| 175 | free (buffer); |
| 176 | } else { |
| 177 | memset (buffer, 0, BUFFER_SIZE); |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | return ret; |
| 182 | } |
| 183 | |
| 184 | // test: calc.exe -h |
| 185 | // test: calc.exe -h | awk '/usage:/ { rc=1 } END { exit (1-rc) }' |
| 186 | // test: echo 1 | calc.exe -v3 | grep -q value |
| 187 | // test: calc.exe -_ 2> /dev/null | awk 'END { if (NR == 0) { exit(0) } else exit (1) }' |
| 188 | // test: calc.exe -_ 2>&1 | awk '/usage:/ { rc=1 } END { exit (1-rc) }' |
| 189 | // test: calc.exe error 2>&1 | grep -q 'invalid option' |
| 190 | // test: calc.exe -p 2>&1 | grep -q 'missing precision' |
| 191 | // test: calc.exe -v 2>&1 | grep -q 'missing verbose' |
| 192 | // test: echo "1 + 2" | calc.exe | grep -q '=> 3' |
| 193 | // test: echo "1 - 2" | calc.exe | grep -q '=> -1' |
| 194 | // test: echo "2 * 3" | calc.exe | grep -q '=> 6' |
| 195 | // test: echo "1 / 2" | calc.exe | grep -q '=> 0\.5' |
| 196 | // test: echo "8 % 3" | calc.exe | grep -q '=> 2' |
| 197 | // test: echo "-9 % 3.1" | calc.exe | grep -q '=> -2\.8' |
| 198 | // test: echo "2 ^ 3" | calc.exe | grep -q '=> 8' |
| 199 | // test: echo "1e-1 + 2.34e3" | calc.exe | grep -q '=> 2340\.1' |
| 200 | // test: echo "sqrt (2)" | calc.exe | grep -q '=> 1\.41421' |
| 201 | // test: echo "pow (2, 3)" | calc.exe | grep -q '=> 8' |
| 202 | // test: echo "cos (2)" | calc.exe | grep -q '=> -0\.416147' |
| 203 | // test: echo "sin (2)" | calc.exe | grep -q '=> 0\.909297' |
| 204 | // test: echo "atan (2)" | calc.exe | grep -q '=> 1\.10715' |
| 205 | // test: echo "exp (2)" | calc.exe | grep -q '=> 7\.38906' |
| 206 | // test: echo "log (2)" | calc.exe | grep -q '=> 0\.693147' |
| 207 | // test: echo "2 + 3 - 4" | calc.exe | grep -q '=> 1' |
| 208 | // test: echo "1 + cos (2 - 3)" | calc.exe | grep -q '=> 1\.5403' |
| 209 | // test: echo "cos (1 / 2) * 3" | calc.exe | grep -q '=> 2\.63275' |
| 210 | // test: echo "1 + 4 * (2 - 3)" | calc.exe | grep -q '=> -3' |
| 211 | // test: echo "(2 - 3) / 4" | calc.exe | grep -q '=> -0\.25' |
| 212 | // test: echo "pow (8 - 3, 4 / 3)" | calc.exe | grep -q '=> 8\.54988' |
| 213 | // test: echo "1 + -2" | calc.exe | grep -q '=> -1' |
| 214 | // test: echo "1 - +2" | calc.exe | grep -q '=> -1' |
| 215 | // test: echo "-1 + +2" | calc.exe | grep -q '=> 1' |
| 216 | // test: echo "-1+2" | calc.exe | grep -q '=> 1' |
| 217 | // test: echo "1-2" | calc.exe | grep -q '=> -1' |
| 218 | // test: echo "1 * 2 / 3 + 4" | calc.exe | grep -q '=> 4\.66667' |
| 219 | // test: echo "2 ^ 3 * 4 + 5" | calc.exe | grep -q '=> 37' |
| 220 | // test: echo "2 + 3 * 4 ^ 5" | calc.exe | grep -q '=> 3074' |
| 221 | // test: echo "2 ^ 3 * 4 + cos(5/6)" | calc.exe | grep -q '=> 32\.6724' |
| 222 | // test: echo "95-6.3*15-1" | calc.exe | grep -q '=> -0.5' |
| 223 | // test: echo "95 - 6.3 * 15 - 1" | calc.exe | grep -q '=> -0\.5' |
| 224 | // test: echo "95-6.3+15" | calc.exe | grep -q '=> 103.7' |
| 225 | // test: echo "-cos (0) + 1" | calc.exe | grep -q '=> -0' |
| 226 | // test: echo "-cos(0)+1" | calc.exe | grep -q '=> -0' |
| 227 | // test: echo "quit" | calc.exe | grep -q 'bye' |
| 228 | // test: echo "help" | calc.exe | grep -q 'miscellaneous' |
| 229 | // test: echo "1 + 2 *" | calc.exe | grep -q 'error' |
| 230 | // test: echo "* 1 - 2" | calc.exe | grep -q 'error' |
| 231 | // test: echo "2 + * 3" | calc.exe | grep -q 'error' |
| 232 | // test: echo "2 + cos(3 *)" | calc.exe | grep -q 'error' |
| 233 | // test: echo "2 + (foo)" | calc.exe | grep -q 'error' |
| 234 | // test: echo "2 + cos (pi +" | calc.exe | grep -q 'error' |
| 235 | // test: echo "2 + cos (pi" | calc.exe | grep -vq 'error' |
| 236 | // test: echo "cos (1, 2)" | calc.exe | grep -q 'error' |
| 237 | // test: echo "sqrt 2" | calc.exe | grep -q 'error' |
| 238 | // test: echo "pow (2)" | calc.exe | grep -q 'error' |
| 239 | // test: echo "1.23456789" | calc.exe -p 3 | grep -q '1\.234' |
| 240 | // test: echo . | calc.exe |
| 241 | // test: echo -e '1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1\n1 + 1' | calc.exe -n | grep -q 64 |
| 242 | // test: echo -e '1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1\n1 + 1' | calc.exe -n | grep -q 2 |
| 243 | // test: echo -e '1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1\n1 + 1' | calc.exe | grep -q 64 |
| 244 | // test: echo -e '1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1\n1 + 1' | calc.exe | grep -q 2 |
| 245 | // test: echo -e '-cos (1)\n1 + 1\n1 - 1\n1 * 1\n1 / 1\n3%2\n2^2\nsqrt (2)\ncos (0)\nsin (0)\natan (0)\nlog (1)\nexp (1)\nans\ne\npi\nsto (1)\nrcl (2)\ndisp\nhelp\nquit' | calc.exe -v 3 | grep -q bye |
| 246 | // test: echo -e '1 +\n1 -\n1 * 1\n1 /\n3%\n2^\nsqrt ()\ncos ()\nsin ()\natan ()\nlog ()\nexp ()\n1 + (' | calc.exe | grep -c error | xargs test 12 = |
| 247 | // test: echo -e '1 + 1\nans' | calc.exe -p 3 | grep -c 2 | xargs test 2 = |
| 248 | // test: echo -e 'sin (pi / 2)' | calc.exe -p 4 | grep -q 1 |
| 249 | // test: echo -e 'e ^ 2' | calc.exe | grep -q '7\.38906' |
| 250 | // test: echo -e '\n\n\n' | calc.exe | grep -qv 'error' |
| 251 | // test: echo -e '\n\n\n' | calc.exe -n |
| 252 | // test: echo -e '1.5\nsto (2)\n3 + rcl(2) * 4\nsto (5)' | calc.exe | grep -q 9 |
| 253 | // test: echo -e '1\nsto (0)\nsto (11)\nrcl (0)\nrcl (11)' | calc.exe | grep -c invalid | xargs test 4 = |
| 254 | // test: echo -e '1\nsto (2)\n3\nsto (5, 7)\nsto(9)\ndisp' | calc.exe | grep -q '0 1 0 0 7 0 0 0 7 0' |
| 255 | // test: echo -e '1+1 == 2' | calc.exe | grep -q '=> 1' |
| 256 | // test: echo -e '1 + 1 == 2 - 0' | calc.exe | grep -q '=> 1' |
| 257 | // test: echo -e '1 == 1 + 1 == 1' | calc.exe | grep -q '=> 0' |
| 258 | // test: echo -e '1-cos(3*pi/4) != 0.5^-2' | calc.exe | grep -q '=> 1' |
| 259 | // test: echo -e '1 >= 2' | calc.exe | grep -q '=> 0' |
| 260 | // test: echo -e '2 >= 2' | calc.exe | grep -q '=> 1' |
| 261 | // test: echo -e '1 <= 2' | calc.exe | grep -q '=> 1' |
| 262 | // test: echo -e '2 <= 2' | calc.exe | grep -q '=> 1' |
| 263 | // test: echo -e '1 > 2' | calc.exe | grep -q '=> 0' |
| 264 | // test: echo -e '2 > 2' | calc.exe | grep -q '=> 0' |
| 265 | // test: echo -e '1 < 2' | calc.exe | grep -q '=> 1' |
| 266 | // test: echo -e '2 < 2' | calc.exe | grep -q '=> 0' |
| 267 | // test: echo -e '1 == 1\n1 != 1\n1 >= 1\n1 <= 1\n1 > 1\n1 < 1\nquit' | calc.exe -v 3 | grep -q bye |
| 268 | // test: echo -e '(3 == 3) & (2 > 1)' | calc.exe | grep -q '=> 1' |
| 269 | // test: echo -e '(3 == 4) & (2 > 1)' | calc.exe | grep -q '=> 0' |
| 270 | // test: echo -e '(3 == 3) & (2 > 2)' | calc.exe | grep -q '=> 0' |
| 271 | // test: echo -e '(3 == 4) & (2 > 2)' | calc.exe | grep -q '=> 0' |
| 272 | // test: echo -e '(3 == 3) | (2 > 1)' | calc.exe | grep -q '=> 1' |
| 273 | // test: echo -e '(3 == 4) | (2 > 1)' | calc.exe | grep -q '=> 1' |
| 274 | // test: echo -e '(3 == 3) | (2 > 2)' | calc.exe | grep -q '=> 1' |
| 275 | // test: echo -e '(3 == 4) | (2 > 2)' | calc.exe | grep -q '=> 0' |
| 276 | // test: echo -e '!(3 == 4)' | calc.exe | grep -q '=> 1' |
| 277 | // test: echo -e '!(3 == 3)' | calc.exe | grep -q '=> 0' |
| 278 | // test: echo -e '1 & 1\n1 | 1\n!(1)\nquit' | calc.exe -v 3 | grep -q bye |
| 279 | // test: echo -e '(3 == 3) & (4 > 2)' | calc.exe | grep -q '=> 1' |
| 280 | // test: echo -e '3 == 3 & 4 > 2' | calc.exe | grep -q '=> 1' |
| 281 | // test: echo -e '1 + quit' | calc.exe 2>&1 | grep -q error |
| 282 | // test: echo -e 'cos (quit)' | calc.exe 2>&1 | grep -q error |
| 283 | // test: echo -e '(quit)' | calc.exe 2>&1 | grep -q error |
| 284 | |
| 285 | /* vim: set ts=4 sw=4 et: */ |