/* depend: */
/* cflags: */
-/* linker: atoi.o fdprintf.o */
+/* linker: atoi.o debug.o fdprintf.o parser.o -lm -lreadline */
-//#include <malloc.h>
+#include <malloc.h>
+#include <readline/readline.h>
+#include <readline/history.h>
#include <stddef.h>
#include <stdio.h>
-#include <unistd.h>
+//#include <stdlib.h>
+//#include <unistd.h>
#include "atoi.h"
+#include "debug.h"
#include "fdprintf.h"
+#include "parser.h"
/* constants */
-//#define BUFFER_SIZE 4096
-#define BUFFER_SIZE 256
-
/* macros */
#define CEIL(x, y) (((x) + (y) - 1) / (y))
#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 = 2;
+int precision = 6;
/* help function */
int fd = ret ? stdfderr : stdfdout;
fdprintf (fd, "usage: %s\n", progname);
fdprintf (fd, " -h : help message\n");
+ fdprintf (fd, " -p : precision (%d)\n", precision);
fdprintf (fd, " -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 = 0, j = 0, n;
+ char *buffer;
+ int i = 0;
+ int ret = 0;
/* program name */
}
char c = arg[1];
switch (c) {
+ case 'p':
+ arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL;
+ if (arg == NULL) {
+ PRINTERR ("%s: missing precision\n", progname);
+ return usage (1);
+ }
+ precision = atoi (arg);
+ break;
case 'v':
arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL;
if (arg == NULL) {
}
}
+ /* format */
+ char format[8] = "=> %.f\n";
+ format[4] = '0' + precision;
+
/* read from input stream */
- while ((n = read (stdfdin, pt, BUFFER_SIZE - (pt - buffer))) != 0) {
- VERBOSE (DEBUG, PRINTOUT ("read %d bytes\n", n));
- n += (pt - buffer);
+ while ((buffer = readline ("<= ")) != NULL) {
- /* look for end of line */
- for (i = 0, j = 0; i < n; i++) {
- if (buffer[i] == '\n') {
- buffer[i] = 0;
- VERBOSE (DEBUG, PRINTOUT ("line(%d): %s\n", j, buffer + j));
- //fsync (stdfdout);
- fflush (stdout);
- j = i + 1;
- }
+ /* check empty line */
+ if (strlen (buffer) == 0) {
+ free (buffer);
+ continue;
+ } else if (strcmp (buffer, ".") == 0) {
+ return 0;
}
- /* keep remainding */
- if (j < n) {
- for (i = 0; i < n - j; i++) {
- buffer[i] = buffer[i + j];
- }
- pt = buffer + n - j;
- for (i = n - j; i < BUFFER_SIZE; i++) {
- buffer[i] = 0;
+ /* add line into history */
+ add_history (buffer);
+ VERBOSE (INFO, PRINTOUT ("line (%d): %s\n", where_history (), buffer));
+ if (where_history () == 10) {
+ HIST_ENTRY *last = remove_history (0);
+ if (last) {
+ free_history_entry (last);
}
}
+
+ /* look for end of line */
+ element_t *element = parser (buffer, NULL, 0);
+ if (element == ERROR_OP) {
+ VERBOSE (WARNING, PRINTOUT ("error while parsing: %s\n", buffer));
+ ret = 1;
+ } else {
+ VERBOSE (INFO, print_element (element, 0));
+ PRINTOUT (format, evaluate_element (element, 0));
+ delelement (element);
+ ret = 0;
+ }
+
+ free (buffer);
}
- 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 | grep -q 6.4e1
+// 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