/* depend: */
/* cflags: */
-/* linker: */
+/* linker: debug.o parser.o -lm -lreadline */
-#include <assert.h>
-#include <getopt.h>
#include <malloc.h>
+#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
+#include <readline/readline.h>
+#include <readline/history.h>
+
+#include "debug.h"
+#include "parser.h"
+
/* constants */
-//#define BUFFER_SIZE 4096
-#define BUFFER_SIZE 256
+#define BUFFER_SIZE 4096
/* macros */
#define MIN(x, y) (((x) < (y)) ? (x) : (y))
#define MAX(x, y) (((x) > (y)) ? (x) : (y))
-/* verbose */
-
-#define ERROR 0
-#define WARNING 1
-#define INFO 2
-#define DEBUG 3
-
-#define VERBOSE(level, statement...) do { if (level <= verbose) { statement; } } while(0)
-
/* gobal variables */
char *progname = NULL;
-int verbose = 0;
+int mode = 1;
+int precision = 6;
/* help function */
-void usage (int ret)
+int usage (int ret)
{
- FILE *fd = ret ? stderr : stdout;
- fprintf (fd, "usage: %s\n", progname);
- fprintf (fd, " -h : help message\n");
- fprintf (fd, " -v : verbose level (%d)\n", verbose);
-
- exit (ret);
+ FILE *fid = ret ? stderr : stdout;
+ fprintf (fid, "usage: %s\n", progname);
+ fprintf (fid, " -h : help message\n");
+ fprintf (fid, " -n : no readline mode (%s)\n", mode ? "yes" : "no");
+ fprintf (fid, " -p : precision (%d)\n", precision);
+ fprintf (fid, " -v : verbose level (%d)\n", verbose);
+
+ return ret;
}
/* main function */
-int main (int argc, char *argv[])
+int main (int argc, char *argv[])
{
- char buffer[BUFFER_SIZE + 1] = {0};
- char *pt = buffer;
- int i, j = 0, n;
+ char *buffer = NULL;
+ char buffer_static[BUFFER_SIZE + 1] = {0};
+ int i = 0, nb = 1;
+ int ret = 0;
+
+ /* program name */
progname = argv[0];
+ while (progname[i] != '\0') {
+ if ((progname[i] == '/') || (progname[i] == '\\')) {
+ progname += i + 1;
+ i = 0;
+ } else {
+ i++;
+ }
+ }
- int c;
- while ((c = getopt(argc, argv, "hv:")) != EOF) {
+ /* argument processing */
+
+ while (argc-- > 1) {
+ char *arg = *(++argv);
+ if (arg[0] != '-') {
+ fprintf (stderr, "%s: invalid option -- %s\n", progname, arg);
+ return usage (1);
+ }
+ char c = arg[1];
switch (c) {
+ case 'n':
+ mode = 0;
+ buffer = buffer_static;
+ break;
+ case 'p':
+ arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL;
+ if (arg == NULL) {
+ fprintf (stderr, "%s: missing precision\n", progname);
+ return usage (1);
+ }
+ precision = atoi (arg);
+ break;
case 'v':
- verbose = atoi (optarg);
+ arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL;
+ if (arg == NULL) {
+ fprintf (stderr, "%s: missing verbose level\n", progname);
+ return usage (1);
+ }
+ verbose = atoi (arg);
break;
case 'h':
- VERBOSE (INFO, usage (0));
- break;
default:
- VERBOSE (ERROR, usage (1));
+ return usage (c != 'h');
}
}
- if (argc - optind != 0) {
- VERBOSE (ERROR, fprintf (stderr, "%s: invalid option -- %s\n", progname, argv[optind]));
- VERBOSE (ERROR, usage (1));
- }
+
+ /* format */
+ char format[8] = "=> %.f\n";
+ format[4] = '0' + precision;
/* read from input stream */
- while ((n = read (STDIN_FILENO, pt, BUFFER_SIZE - (pt - buffer))) != 0) {
- VERBOSE (DEBUG, fprintf (stdout, "read %d bytes\n", n));
- n += (pt - buffer);
- /* look for end of line */
- for (i = 0, j = 0; i < n; i++) {
- if (buffer[i] == '\n') {
- buffer[i] = 0;
- VERBOSE (DEBUG, fprintf (stdout, "line(%d): %s\n", j, buffer + j));
- j = i + 1;
+ while (1) {
+ char *line[BUFFER_SIZE] = {0};
+
+ if (mode) {
+ if ((buffer = readline ("<= ")) == NULL) {
+ break;
}
- }
- /* keep remainding */
- if (j < n) {
- for (i = 0; i < n - j; i++) {
- buffer[i] = buffer[i + j];
+ /* check empty line */
+ if (strlen (buffer) == 0) {
+ free (buffer);
+ continue;
+ } else if (strcmp (buffer, ".") == 0) {
+ break;
}
- pt = buffer + n - j;
- for (i = n - j; i < BUFFER_SIZE; i++) {
- buffer[i] = 0;
+ line[0] = buffer;
+
+ /* add line into history */
+ add_history (buffer);
+ VERBOSE (INFO, fprintf (stdout, "line (%d): '%s'\n", where_history (), buffer));
+ if (where_history () == 10) {
+ HIST_ENTRY *last = remove_history (0);
+ if (last) {
+ free_history_entry (last);
+ }
}
+ } else {
+ if (read (STDIN_FILENO, buffer, BUFFER_SIZE) == 0) {
+ break;
+ }
+ nb = 0;
+ char *pt = line[nb++] = buffer;
+ while (*pt++ != '\0') {
+ if (*pt == '\n') {
+ *pt = '\0';
+ line[nb++] = ++pt;
+ }
+ }
+ VERBOSE (INFO, fprintf (stdout, "line: '%s'\n", buffer));
}
- }
- /* check that nothing is left behind */
+ /* look for end of line */
+ for (i = 0; (i < nb) && (ret != 1); i++) {
+ if (*line[i] == '\0') {
+ continue;
+ }
+ element_t *element = parser (line[i], NULL, 0);
+ if (element == ERROR_OP) {
+ VERBOSE (WARNING, fprintf (stdout, "error while parsing: %s\n", line[i]));
+ ret = 1;
+ } else {
+ VERBOSE (INFO, print_element (element, 0));
+ fprintf (stdout, format, evaluate_element (element, 0));
+ delelement (element);
+ ret = 0;
+ }
+ }
- VERBOSE (DEBUG, fprintf (stdout, "last\n"));
- VERBOSE (DEBUG, fprintf (stdout, "line(%d): %s\n", j, buffer + j));
+ if (mode) {
+ free (buffer);
+ } else {
+ memset (buffer, 0, BUFFER_SIZE);
+ }
+ }
- return 0;
+ return ret;
}
// test: calc.exe -h
// test: calc.exe -h | awk '/usage:/ { rc=1 } END { exit (1-rc) }'
+// test: echo 1 | calc.exe -v3 | grep -q value
// test: calc.exe -_ 2> /dev/null | awk 'END { if (NR == 0) { exit(0) } else exit (1) }'
// test: calc.exe -_ 2>&1 | awk '/usage:/ { rc=1 } END { exit (1-rc) }'
-// test: echo "foo\nbar\nfoobar" | calc.exe -v3
+// test: calc.exe error 2>&1 | grep -q 'invalid option'
+// test: calc.exe -p 2>&1 | grep -q 'missing precision'
+// test: calc.exe -v 2>&1 | grep -q 'missing verbose'
+// test: echo "1 + 2" | calc.exe | grep -q '=> 3'
+// test: echo "1 - 2" | calc.exe | grep -q '=> -1'
+// test: echo "2 * 3" | calc.exe | grep -q '=> 6'
+// test: echo "1 / 2" | calc.exe | grep -q '=> 5e-1'
+// test: echo "8 % 3" | calc.exe | grep -q '=> 2'
+// test: echo "-9 % 3.1" | calc.exe | grep -q '=> -2.8'
+// test: echo "2 ^ 3" | calc.exe | grep -q '=> 8'
+// test: echo "1e-1 + 2.34e3" | calc.exe | grep -q '=> 2.3401'
+// test: echo "sqrt (2)" | calc.exe | grep -q '=> 1.414213'
+// test: echo "pow (2, 3)" | calc.exe | grep -q '=> 8'
+// test: echo "cos (2)" | calc.exe | grep -q '=> -4.161468e-1'
+// test: echo "sin (2)" | calc.exe | grep -q '=> 9.092974e-1'
+// test: echo "atan (2)" | calc.exe | grep -q '=> 1.107148'
+// test: echo "exp (2)" | calc.exe | grep -q '=> 7.389056'
+// test: echo "log (2)" | calc.exe | grep -q '=> 6.931471e-1'
+// test: echo "2 + 3 - 4" | calc.exe | grep -q '=> 1'
+// test: echo "1 + cos (2 - 3)" | calc.exe | grep -q '=> 1.54030'
+// test: echo "cos (1 / 2) * 3" | calc.exe | grep -q '=> 2.63274'
+// test: echo "1 + 4 * (2 - 3)" | calc.exe | grep -q '=> -3'
+// test: echo "(2 - 3) / 4" | calc.exe | grep -q '=> -2.5e-1'
+// test: echo "pow (8 - 3, 4 / 3)" | calc.exe | grep -q '=> 8.549879'
+// test: echo "1 + -2" | calc.exe | grep -q '=> -1'
+// test: echo "1 - +2" | calc.exe | grep -q '=> -1'
+// test: echo "-1 + +2" | calc.exe | grep -q '=> 1'
+// test: echo "-1+2" | calc.exe | grep -q '=> 1'
+// test: echo "1-2" | calc.exe | grep -q '=> -1'
+// test: echo "1 * 2 / 3 + 4" | calc.exe | grep -q '=> 4.666666'
+// test: echo "2 ^ 3 * 4 + 5" | calc.exe | grep -q '=> 3.7e1'
+// test: echo "2 + 3 * 4 ^ 5" | calc.exe | grep -q '=> 3.074e3'
+// test: echo "2 ^ 3 * 4 + cos(5/6)" | calc.exe | grep -q '=> 3.267241e1'
+// test: echo "95-6.3*15-1" | calc.exe | grep -q '=> -5e-1'
+// test: echo "95 - 6.3 * 15 - 1" | calc.exe | grep -q '=> -5e-1'
+// test: echo "95-6.3+15" | calc.exe | grep -q '=> 1.037e2'
+// test: echo "-cos (0) + 1" | calc.exe | grep -q '=> 0'
+// test: echo "quit" | calc.exe | grep -q 'bye'
+// test: echo "help" | calc.exe | grep -q 'miscellaneous'
+// test: echo "1 + 2 *" | calc.exe | grep -q 'error'
+// test: echo "* 1 - 2" | calc.exe | grep -q 'error'
+// test: echo "2 + * 3" | calc.exe | grep -q 'error'
+// test: echo "sqrt 2" | calc.exe | grep -q 'error'
+// test: echo "pow (2)" | calc.exe | grep -q 'error'
+// test: echo "1.23456789" | calc.exe -p 3 | grep -q '1\.234'
+// test: echo . | calc.exe
+// 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 6.4e1
+// 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
+// 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 6.4e1
+// 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
+// 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)\nhelp\nquit' | calc.exe -v 3 | grep -q bye
+// test: echo -e '1 +\n1 -\n1 * 1\n1 /\n3%\n2^\nsqrt ()\ncos ()\nsin ()\natan ()\nlog ()\nexp ()\n1 + (' | calc.exe |grep -c error |xargs test 11 =
/* vim: set ts=4 sw=4 et: */
Soft'N'Design Software / projects / calc.git / blobdiff