/* depend: */
/* cflags: */
-/* linker: atoi.o debug.o fdprintf.o parser.o -lm */
+/* linker: debug.o parser.o -lm -lreadline */
-//#include <malloc.h>
+#include <malloc.h>
#include <stddef.h>
#include <stdio.h>
+#include <stdlib.h>
#include <unistd.h>
-#include "atoi.h"
+#include <readline/readline.h>
+#include <readline/history.h>
+
#include "debug.h"
-#include "fdprintf.h"
#include "parser.h"
/* constants */
-//#define BUFFER_SIZE 4096
-#define BUFFER_SIZE 256
+#define BUFFER_SIZE 4096
/* macros */
/* gobal variables */
char *progname = NULL;
+int mode = 1;
+int precision = 6;
/* help function */
int usage (int ret)
{
- 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);
+ 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 = 0, j = 0, n;
+ char *buffer = NULL;
+ char buffer_static[BUFFER_SIZE + 1] = {0};
+ int i = 0, nb = 1;
int ret = 0;
/* program name */
while (argc-- > 1) {
char *arg = *(++argv);
if (arg[0] != '-') {
- PRINTERR ("%s: invalid option -- %s\n", progname, arg);
+ 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':
arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL;
if (arg == NULL) {
- PRINTERR ("%s: missing verbose level\n", progname);
+ fprintf (stderr, "%s: missing verbose level\n", progname);
return usage (1);
}
verbose = atoi (arg);
}
}
+ /* 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 (INFO, PRINTOUT ("read %d bytes\n", n));
- n += (pt - buffer);
- if ((n == 2) && (buffer[0] == '.')) {
- return 0;
- }
+ while (1) {
+ char *line[BUFFER_SIZE] = {0};
- /* look for end of line */
- for (i = 0, j = 0; i < n; i++) {
- if (buffer[i] == '\n') {
- buffer[i] = 0;
- VERBOSE (INFO, PRINTOUT ("line(%d): %s\n", j, buffer + j));
- element_t *element = parser (buffer + j, 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 ("=> %f\n", evaluate_element (element, 0));
- delelement (element);
- ret = 0;
+ if (mode) {
+ if ((buffer = readline ("<= ")) == NULL) {
+ break;
+ }
+
+ /* check empty line */
+ if (strlen (buffer) == 0) {
+ free (buffer);
+ continue;
+ } else if (strcmp (buffer, ".") == 0) {
+ break;
+ }
+ 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);
}
- //fsync (stdfdout);
- j = i + 1;
}
+ } 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));
}
- /* keep remainding */
- if (j < n) {
- for (i = 0; i < n - j; i++) {
- buffer[i] = buffer[i + j];
+ /* look for end of line */
+ for (i = 0; (i < nb) && (ret != 1); i++) {
+ if (*line[i] == '\0') {
+ continue;
}
- pt = buffer + n - j;
- for (i = n - j; i < BUFFER_SIZE; i++) {
- buffer[i] = 0;
+ 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;
}
}
+
+ if (mode) {
+ free (buffer);
+ } else {
+ memset (buffer, 0, BUFFER_SIZE);
+ }
}
return ret;
// 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: 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 "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 '=> -5.000028e-1'
-// test: echo "95 - 6.3 * 15 - 1" | calc.exe | grep -q '=> -5.000028e-1'
+// 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 "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