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-rw-r--r--toys/pending/test.c225
1 files changed, 164 insertions, 61 deletions
diff --git a/toys/pending/test.c b/toys/pending/test.c
index c03e4502..e64ebf14 100644
--- a/toys/pending/test.c
+++ b/toys/pending/test.c
@@ -27,7 +27,7 @@ config TEST
--- Tests with one argument on each side of an operator:
Two strings:
- = are identical != differ
+ = are identical != differ
Two integers:
-eq equal -gt first > second -lt first < second
-ne not equal -ge first >= second -le first <= second
@@ -39,76 +39,179 @@ config TEST
#include "toys.h"
-void test_main(void)
+int get_stat(struct stat *st, int *link, char* s)
{
- int id, not;
- char *s, *err_fmt = "Bad flag '%s'";
+ if (lstat(s, st) == -1) return 0;
+ *link = S_ISLNK(st->st_mode);
+ if (*link && (stat(s, st) == -1)) return 0;
+ return 1;
+}
- toys.exitval = 2;
- if (!strcmp("[", toys.which->name))
- if (!strcmp("]", toys.optargs[--toys.optc])) error_exit("Missing ']'");
- if (!strcmp("!", toys.optargs[0])) {
- not = 1;
- toys.optargs++;
- toys.optc--;
+// basic expression without !, -o, -a, (
+int test_basic(int optb, int opte)
+{
+ int id, val;
+ char *s, *err_fmt = "Bad flag '%s'", *err_int = "Bad integer '%s'";
+
+ if (optb == opte) val = 0;
+ else if (optb + 1 == opte) val = !!*toys.optargs[optb];
+ else if (optb + 2 == opte && toys.optargs[optb][0] == '-') {
+ char c = toys.optargs[optb][1];
+ struct stat st;
+ int link;
+
+ if (!c || toys.optargs[optb][2]) error_exit(err_fmt, toys.optargs[optb]);
+ s = toys.optargs[optb + 1];
+ if (c == 'b') val = get_stat(&st, &link, s) && S_ISBLK(st.st_mode);
+ else if (c == 'c') val = get_stat(&st, &link, s) && S_ISCHR(st.st_mode);
+ else if (c == 'd') val = get_stat(&st, &link, s) && S_ISDIR(st.st_mode);
+ else if (c == 'e') val = get_stat(&st, &link, s);
+ else if (c == 'f') val = get_stat(&st, &link, s) && S_ISREG(st.st_mode);
+ else if (c == 'g') val = get_stat(&st, &link, s) && (st.st_mode & S_ISGID);
+ else if (c == 'h' || c == 'L') val = get_stat(&st, &link, s) && link;
+ else if (c == 'p') val = get_stat(&st, &link, s) && S_ISFIFO(st.st_mode);
+ else if (c == 'S') val = get_stat(&st, &link, s) && S_ISSOCK(st.st_mode);
+ else if (c == 's') val = get_stat(&st, &link, s) && st.st_size != 0;
+ else if (c == 'u') val = get_stat(&st, &link, s) && (st.st_mode & S_ISUID);
+ else if (c == 'r') val = access(s, R_OK) != -1;
+ else if (c == 'w') val = access(s, W_OK) != -1;
+ else if (c == 'x') val = access(s, X_OK) != -1;
+ else if (c == 'z') val = !*s;
+ else if (c == 'n') val = !!*s;
+ else if (c == 't') {
+ struct termios termios;
+ val = tcgetattr(atoi(s), &termios) != -1;
+ }
+ else error_exit(err_fmt, toys.optargs[optb]);
}
- if (!toys.optc) toys.exitval = 0;
- else if (toys.optargs[0][0] == '-') {
- id = stridx("bcdefghLpSsurwxznt", toys.optargs[0][1]);
- if (id == -1 || toys.optargs[0][2]) error_exit(err_fmt, toys.optargs[0]);
- if (id < 12) {
- struct stat st;
- int nolink;
-
- toys.exitval = 1;
- if (lstat(toys.optargs[1], &st) == -1) return;
- nolink = !S_ISLNK(st.st_mode);
- if (!nolink && (stat(toys.optargs[1], &st) == -1)) return;
-
- if (id == 0) toys.exitval = !S_ISBLK(st.st_mode); // b
- else if (id == 1) toys.exitval = !S_ISCHR(st.st_mode); // c
- else if (id == 2) toys.exitval = !S_ISDIR(st.st_mode); // d
- else if (id == 3) toys.exitval = 0; // e
- else if (id == 4) toys.exitval = !S_ISREG(st.st_mode); // f
- else if (id == 5) toys.exitval = !(st.st_mode & S_ISGID); // g
- else if ((id == 6) || (id == 7)) toys.exitval = nolink; // hL
- else if (id == 8) toys.exitval = !S_ISFIFO(st.st_mode); // p
- else if (id == 9) toys.exitval = !S_ISSOCK(st.st_mode); // S
- else if (id == 10) toys.exitval = st.st_size == 0; // s
- else toys.exitval = !(st.st_mode & S_ISUID); // u
+ else if (optb + 3 == opte) {
+ if (*toys.optargs[optb + 1] == '-') {
+ char *end_a, *end_b;
+ long a, b;
+ int errno_a, errno_b;
+
+ errno = 0;
+ a = strtol(toys.optargs[optb], &end_a, 10);
+ errno_a = errno;
+ b = strtol(toys.optargs[optb + 2], &end_b, 10);
+ errno_b = errno;
+ s = toys.optargs[optb + 1] + 1;
+ if (!strcmp("eq", s)) val = a == b;
+ else if (!strcmp("ne", s)) val = a != b;
+ else if (!strcmp("gt", s)) val = a > b;
+ else if (!strcmp("ge", s)) val = a >= b;
+ else if (!strcmp("lt", s)) val = a < b;
+ else if (!strcmp("le", s)) val = a <= b;
+ else error_exit(err_fmt, toys.optargs[optb + 1]);
+ if (!*toys.optargs[optb] || *end_a || errno_a)
+ error_exit(err_int, toys.optargs[optb]);
+ if (!*toys.optargs[optb + 2] || *end_b || errno_b)
+ error_exit(err_int, toys.optargs[optb + 2]);
}
- else if (id < 15) // rwx
- toys.exitval = access(toys.optargs[1], 1 << (id - 12)) == -1;
- else if (id < 17) // zn
- toys.exitval = toys.optargs[1] && !*toys.optargs[1] ^ (id - 15);
- else { // t
- struct termios termios;
- toys.exitval = tcgetattr(atoi(toys.optargs[1]), &termios) == -1;
+ else {
+ int result = strcmp(toys.optargs[optb], toys.optargs[optb + 2]);
+
+ s = toys.optargs[optb + 1];
+ if (!strcmp("=", s)) val = !result;
+ else if (!strcmp("!=", s)) val = !!result;
+ else error_exit(err_fmt, toys.optargs[optb + 1]);
}
}
- else if (toys.optc == 1) toys.exitval = *toys.optargs[0] == 0;
- else if (toys.optc == 3) {
- if (*toys.optargs[1] == '-') {
- long a = atol(toys.optargs[0]), b = atol(toys.optargs[2]);
-
- s = toys.optargs[1] + 1;
- if (!strcmp("eq", s)) toys.exitval = a != b;
- else if (!strcmp("ne", s)) toys.exitval = a == b;
- else if (!strcmp("gt", s)) toys.exitval = a < b;
- else if (!strcmp("ge", s)) toys.exitval = a <= b;
- else if (!strcmp("lt", s)) toys.exitval = a > b;
- else if (!strcmp("le", s)) toys.exitval = a >= b;
- else error_exit(err_fmt, toys.optargs[1]);
+ else error_exit("Syntax error");
+
+ return val;
+}
+
+int test_sub(int optb, int opte)
+{
+ int not, and = 1, or = 0, i, expr;
+ char *err_syntax = "Syntax error";
+
+ for (;;) {
+ not = 0;
+ while (optb < opte && !strcmp("!", toys.optargs[optb])) {
+ not = !not;
+ optb++;
+ }
+ if (optb < opte && !strcmp("(", toys.optargs[optb])) {
+ int par = 1;
+
+ for (i = optb + 1; par && i < opte; i++) {
+ if (!strcmp(")", toys.optargs[i])) par--;
+ else if (!strcmp("(", toys.optargs[i])) par++;
+ }
+ if (par) error_exit("Missing ')'");
+ expr = not ^ test_sub(optb + 1, i - 1);
+ optb = i;
}
else {
- int result = strcmp(toys.optargs[0], toys.optargs[2]);
+ for (i = 0; i < 4; ++i) {
+ if (optb + i == opte || !strcmp("-a", toys.optargs[optb + i])
+ || !strcmp("-o", toys.optargs[optb + i])) break;
+ }
+ if (i == 4) error_exit(err_syntax);
+ expr = not ^ test_basic(optb, optb + i);
+ optb += i;
+ }
- s = toys.optargs[1];
- if (!strcmp("=", s)) toys.exitval = !!result;
- else if (!strcmp("!=", s)) toys.exitval = !result;
- else error_exit(err_fmt, toys.optargs[1]);
+ if (optb == opte) {
+ return or || (and && expr);
+ }
+ else if (!strcmp("-o", toys.optargs[optb])) {
+ or = or || (and && expr);
+ and = 1;
+ optb++;
+ }
+ else if (!strcmp("-a", toys.optargs[optb])) {
+ and = and && expr;
+ optb++;
}
+ else error_exit(err_syntax);
+ }
+}
+
+int test_few_args(int optb, int opte)
+{
+ if (optb == opte) return 0;
+ else if (optb + 1 == opte) return !!*toys.optargs[optb];
+ else if (optb + 2 == opte) {
+ if (!strcmp("!", toys.optargs[optb])) return !*toys.optargs[optb + 1];
+ else if (toys.optargs[optb][0] == '-' &&
+ stridx("bcdefghLpSsurwxznt", toys.optargs[optb][1]) != -1 &&
+ !toys.optargs[optb][2]) return test_basic(optb, opte);
}
- toys.exitval ^= not;
+ else if (optb + 3 == opte) {
+ if (!strcmp("-eq", toys.optargs[optb + 1]) ||
+ !strcmp("-ne", toys.optargs[optb + 1]) ||
+ !strcmp("-gt", toys.optargs[optb + 1]) ||
+ !strcmp("-ge", toys.optargs[optb + 1]) ||
+ !strcmp("-lt", toys.optargs[optb + 1]) ||
+ !strcmp("-le", toys.optargs[optb + 1]) ||
+ !strcmp("=", toys.optargs[optb + 1]) ||
+ !strcmp("!=", toys.optargs[optb + 1])) return test_basic(optb, opte);
+ else if (!strcmp("!", toys.optargs[optb]))
+ return !test_few_args(optb + 1, opte);
+ else if (!strcmp("(", toys.optargs[optb]) &&
+ !strcmp(")", toys.optargs[optb + 2]))
+ return !!*toys.optargs[optb + 1];
+ }
+ else {
+ if (!strcmp("!", toys.optargs[optb])) return !test_few_args(optb + 1, opte);
+ else if (!strcmp("(", toys.optargs[optb]) &&
+ !strcmp(")", toys.optargs[optb + 3]))
+ return test_few_args(optb + 1, opte - 1);
+ }
+ return test_sub(optb, opte);
+}
+
+void test_main(void)
+{
+ int optc = toys.optc;
+
+ toys.exitval = 2;
+ if (!strcmp("[", toys.which->name))
+ if (!optc || strcmp("]", toys.optargs[--optc])) error_exit("Missing ']'");
+ if (optc <= 4) toys.exitval = !test_few_args(0, optc);
+ else toys.exitval = !test_sub(0, optc);
return;
}
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