/* depend: */
/* cflags: */
-/* linker: */
+/* linker: atoi.o debug.o fdprintf.o parser.o -lm */
-#include <assert.h>
-#include <getopt.h>
-#include <malloc.h>
+//#include <malloc.h>
+#include <stddef.h>
#include <stdio.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 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;
/* 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);
+ int fd = ret ? stdfderr : stdfdout;
+ fdprintf (fd, "usage: %s\n", progname);
+ fdprintf (fd, " -h : help message\n");
+ fdprintf (fd, " -v : verbose level (%d)\n", verbose);
- exit (ret);
+ return ret;
}
/* main function */
{
char buffer[BUFFER_SIZE + 1] = {0};
char *pt = buffer;
- int i, j = 0, n;
+ int i = 0, j = 0, n;
+ int ret = 0;
+
+ /* program name */
progname = argv[0];
+ while (progname[i] != '\0') {
+ if ((progname[i] == '/') || (progname[i] == '\\')) {
+ progname += i + 1;
+ i = 0;
+ } else {
+ i++;
+ }
+ }
+
+ /* argument processing */
- int c;
- while ((c = getopt(argc, argv, "hv:")) != EOF) {
+ while (argc-- > 1) {
+ char *arg = *(++argv);
+ if (arg[0] != '-') {
+ PRINTERR ("%s: invalid option -- %s\n", progname, arg);
+ return usage (1);
+ }
+ char c = arg[1];
switch (c) {
case 'v':
- verbose = atoi (optarg);
+ arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL;
+ if (arg == NULL) {
+ PRINTERR ("%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));
- }
/* read from input stream */
- while ((n = read (STDIN_FILENO, pt, BUFFER_SIZE - (pt - buffer))) != 0) {
- VERBOSE (DEBUG, fprintf (stdout, "read %d bytes\n", n));
+
+ while ((n = read (stdfdin, pt, BUFFER_SIZE - (pt - buffer))) != 0) {
+ VERBOSE (INFO, PRINTOUT ("read %d bytes\n", n));
n += (pt - buffer);
+ if ((n == 2) && (buffer[0] == '.')) {
+ return 0;
+ }
/* 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));
+ VERBOSE (INFO, PRINTOUT ("line(%d): %s\n", j, buffer + j));
+ element_t *element = parser (buffer, NULL, 0);
+ if (element == (void *)(-1)) {
+ VERBOSE (WARNING, PRINTOUT ("error while parsing: %s\n", buffer));
+ ret = 1;
+ } else {
+ VERBOSE (INFO, print_element (element, 0));
+ PRINTOUT ("=> %f\n", evaluate_element (element));
+ ret = 0;
+ }
+ //fsync (stdfdout);
j = i + 1;
}
}
}
}
- /* check that nothing is left behind */
-
- VERBOSE (DEBUG, fprintf (stdout, "last\n"));
- VERBOSE (DEBUG, fprintf (stdout, "line(%d): %s\n", j, buffer + j));
-
- return 0;
+ return ret;
}
// test: calc.exe -h
// test: calc.exe -h | awk '/usage:/ { rc=1 } END { exit (1-rc) }'
// 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: 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 "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'
/* vim: set ts=4 sw=4 et: */
Soft'N'Design Software / projects / calc.git / blobdiff