Fresh implementation of test.c.

1 files changed, 0 insertions, 217 deletions

diff --git a/toys/pending/test.c b/toys/pending/test.c
deleted file mode 100644
index d887fc9f..00000000
--- a/toys/pending/test.c
+++ /dev/null
@@ -1,217 +0,0 @@
-/* test.c - evaluate expression
- *
- * Copyright 2013 Rob Landley <rob@landley.net>
- *
- * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html
-
-USE_TEST(NEWTOY(test, NULL, TOYFLAG_USR|TOYFLAG_BIN))
-
-config TEST
-  bool "test"
-  default n
-  help
-    usage: test [-bcdefghLPrSsuwx PATH] [-nz STRING] [-t FD] [X ?? Y]
-
-    Return true or false by performing tests. (With no arguments return false.)
-
-    --- Tests with a single argument (after the option):
-    PATH is/has:
-      -b  block device   -f  regular file   -p  fifo           -u  setuid bit
-      -c  char device    -g  setgid         -r  read bit       -w  write bit
-      -d  directory      -h  symlink        -S  socket         -x  execute bit
-      -e  exists         -L  symlink        -s  nonzero size
-    STRING is:
-      -n  nonzero size   -z  zero size      (STRING by itself implies -n)
-    FD (integer file descriptor) is:
-      -t  a TTY
-
-    --- Tests with one argument on each side of an operator:
-    Two strings:
-      =  are identical   !=  differ
-    Two integers:
-      -eq  equal         -gt  first > second    -lt  first < second
-      -ne  not equal     -ge  first >= second   -le  first <= second
-
-    --- Modify or combine tests:
-      ! EXPR     not (swap true/false)   EXPR -a EXPR    and (are both true)
-      ( EXPR )   evaluate this first     EXPR -o EXPR    or (is either true)
-*/
-
-#include "toys.h"
-
-int get_stat(struct stat *st, int *link, char* s)
-{
-  if (lstat(s, st) == -1) return 0;
-  *link = S_ISLNK(st->st_mode);
-  if (*link && (stat(s, st) == -1)) return 0;
-  return 1;
-}
-
-// 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]);
-  }
-  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 {
-      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 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 {
-      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_raw(err_syntax);
-      expr = not ^ test_basic(optb, optb + i);
-      optb += i;
-    }
-
-    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_raw(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);
-  }
-  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;
-}