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authorGravatar Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>2007-03-29 13:55:17 +0000
committerGravatar Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>2007-03-29 13:55:17 +0000
commit557b458767f8cd90877630b3520933850ad9459d (patch)
treec93103f89c40e07acc0728aab9240345221808c6 /findutils
parent32773aca55a25b6102b0169a6c160ad52831181a (diff)
downloadbusybox-557b458767f8cd90877630b3520933850ad9459d.tar.gz
busybox-557b458767f8cd90877630b3520933850ad9459d.tar.bz2
- implement a TODO: Use index_in_str_array in parse_params
text data bss dec hex filename 2771 1 12 2784 ae0 find.o.r18272 2749 1 12 2762 aca find.o.-try-switch 2706 1 12 2719 a9f find.o.r18273
Diffstat (limited to 'findutils')
-rw-r--r--findutils/find.c158
1 files changed, 118 insertions, 40 deletions
diff --git a/findutils/find.c b/findutils/find.c
index e7a514cca..453ed4b1c 100644
--- a/findutils/find.c
+++ b/findutils/find.c
@@ -336,13 +336,81 @@ static const char* plus_minus_num(const char* str)
}
#endif
+#define PARM_a 0
+#define PARM_o 1
+#define PARM_char_not (PARM_o + ENABLE_FEATURE_FIND_NOT)
+#define PARM_print (PARM_char_not + 1)
+#define PARM_print0 (PARM_print + ENABLE_FEATURE_FIND_PRINT0)
+#define PARM_name (PARM_print0 + 1)
+#define PARM_type (PARM_name + ENABLE_FEATURE_FIND_TYPE)
+#define PARM_perm (PARM_type + ENABLE_FEATURE_FIND_PERM)
+#define PARM_mtime (PARM_perm + ENABLE_FEATURE_FIND_MTIME)
+#define PARM_mmin (PARM_mtime + ENABLE_FEATURE_FIND_MMIN)
+#define PARM_newer (PARM_mmin + ENABLE_FEATURE_FIND_NEWER)
+#define PARM_inum (PARM_newer + ENABLE_FEATURE_FIND_INUM)
+#define PARM_exec (PARM_inum + ENABLE_FEATURE_FIND_EXEC)
+#define PARM_user (PARM_exec + ENABLE_FEATURE_FIND_USER)
+#if ENABLE_DESKTOP
+#define PARM_and (PARM_user + 1)
+#define PARM_or (PARM_and + 1)
+#define PARM_not (PARM_or + ENABLE_FEATURE_FIND_NOT)
+#define PARM_char_brace (PARM_not + 1)
+#define PARM_prune (PARM_char_brace + 1)
+#define PARM_size (PARM_prune + 1)
+#endif
static action*** parse_params(char **argv)
{
action*** appp;
unsigned cur_group = 0;
unsigned cur_action = 0;
USE_FEATURE_FIND_NOT( bool invert_flag = 0; )
-
+ const char * const params[] = {
+ "-a",
+ "-o",
+#if ENABLE_FEATURE_FIND_NOT
+ "!",
+#endif
+ "-print",
+#if ENABLE_FEATURE_FIND_PRINT0
+ "-print0",
+#endif
+ "-name",
+#if ENABLE_FEATURE_FIND_TYPE
+ "-type",
+#endif
+#if ENABLE_FEATURE_FIND_PERM
+ "-perm",
+#endif
+#if ENABLE_FEATURE_FIND_MTIME
+ "-mtime",
+#endif
+#if ENABLE_FEATURE_FIND_MMIN
+ "-mmin",
+#endif
+#if ENABLE_FEATURE_FIND_NEWER
+ "-newer",
+#endif
+#if ENABLE_FEATURE_FIND_INUM
+ "-inum",
+#endif
+#if ENABLE_FEATURE_FIND_EXEC
+ "-exec",
+#endif
+#if ENABLE_FEATURE_FIND_USER
+ "-user",
+#endif
+#if ENABLE_DESKTOP
+ "-and",
+ "-or",
+# if ENABLE_FEATURE_FIND_NOT
+ "-not",
+# endif
+ "(",
+ "-prune",
+ "-size",
+#endif
+ NULL
+ };
action* alloc_action(int sizeof_struct, action_fp f)
{
action *ap;
@@ -358,33 +426,31 @@ static action*** parse_params(char **argv)
appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */
-// Actions have side effects and return a true or false value
-// We implement: -print, -print0, -exec
-
-// The rest are tests.
-
-// Tests and actions are grouped by operators
-// ( expr ) Force precedence
-// ! expr True if expr is false
-// -not expr Same as ! expr
-// expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false
-// expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true
-// expr1 , expr2 List; both expr1 and expr2 are always evaluated
-// We implement: (), -a, -o
-
-//XXX: TODO: Use index_in_str_array here
+/* Actions have side effects and return a true or false value
+ * We implement: -print, -print0, -exec
+ *
+ * The rest are tests.
+ *
+ * Tests and actions are grouped by operators
+ * ( expr ) Force precedence
+ * ! expr True if expr is false
+ * -not expr Same as ! expr
+ * expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false
+ * expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true
+ * expr1 , expr2 List; both expr1 and expr2 are always evaluated
+ * We implement: (), -a, -o
+ */
while (*argv) {
const char *arg = argv[0];
const char *arg1 = argv[1];
+ int parm = index_in_str_array(params, arg);
/* --- Operators --- */
- if (strcmp(arg, "-a") == 0
- USE_DESKTOP(|| strcmp(arg, "-and") == 0)
- ) {
+ if (parm == PARM_a USE_DESKTOP(|| parm == PARM_and))
+ {
/* no further special handling required */
}
- else if (strcmp(arg, "-o") == 0
- USE_DESKTOP(|| strcmp(arg, "-or") == 0)
- ) {
+ else if (parm == PARM_o USE_DESKTOP(|| parm == PARM_or))
+ {
/* start new OR group */
cur_group++;
appp = xrealloc(appp, (cur_group+2) * sizeof(*appp));
@@ -393,29 +459,31 @@ static action*** parse_params(char **argv)
cur_action = 0;
}
#if ENABLE_FEATURE_FIND_NOT
- else if (LONE_CHAR(arg, '!')
- USE_DESKTOP(|| strcmp(arg, "-not") == 0)
- ) {
+ else if (parm == PARM_char_not USE_DESKTOP(|| parm == PARM_not))
+ {
/* also handles "find ! ! -name 'foo*'" */
invert_flag ^= 1;
}
#endif
/* --- Tests and actions --- */
- else if (strcmp(arg, "-print") == 0) {
+ else if (parm == PARM_print)
+ {
need_print = 0;
/* GNU find ignores '!' here: "find ! -print" */
USE_FEATURE_FIND_NOT( invert_flag = 0; )
(void) ALLOC_ACTION(print);
}
#if ENABLE_FEATURE_FIND_PRINT0
- else if (strcmp(arg, "-print0") == 0) {
+ else if (parm == PARM_print0)
+ {
need_print = 0;
USE_FEATURE_FIND_NOT( invert_flag = 0; )
(void) ALLOC_ACTION(print0);
}
#endif
- else if (strcmp(arg, "-name") == 0) {
+ else if (parm == PARM_name)
+ {
action_name *ap;
if (!*++argv)
bb_error_msg_and_die(bb_msg_requires_arg, arg);
@@ -423,7 +491,8 @@ static action*** parse_params(char **argv)
ap->pattern = arg1;
}
#if ENABLE_FEATURE_FIND_TYPE
- else if (strcmp(arg, "-type") == 0) {
+ else if (parm == PARM_type)
+ {
action_type *ap;
if (!*++argv)
bb_error_msg_and_die(bb_msg_requires_arg, arg);
@@ -438,7 +507,8 @@ static action*** parse_params(char **argv)
* -perm -mode All of the permission bits mode are set for the file.
* -perm +mode Any of the permission bits mode are set for the file.
*/
- else if (strcmp(arg, "-perm") == 0) {
+ else if (parm == PARM_perm)
+ {
action_perm *ap;
if (!*++argv)
bb_error_msg_and_die(bb_msg_requires_arg, arg);
@@ -451,7 +521,8 @@ static action*** parse_params(char **argv)
}
#endif
#if ENABLE_FEATURE_FIND_MTIME
- else if (strcmp(arg, "-mtime") == 0) {
+ else if (parm == PARM_mtime)
+ {
action_mtime *ap;
if (!*++argv)
bb_error_msg_and_die(bb_msg_requires_arg, arg);
@@ -461,7 +532,8 @@ static action*** parse_params(char **argv)
}
#endif
#if ENABLE_FEATURE_FIND_MMIN
- else if (strcmp(arg, "-mmin") == 0) {
+ else if (parm == PARM_mmin)
+ {
action_mmin *ap;
if (!*++argv)
bb_error_msg_and_die(bb_msg_requires_arg, arg);
@@ -471,7 +543,8 @@ static action*** parse_params(char **argv)
}
#endif
#if ENABLE_FEATURE_FIND_NEWER
- else if (strcmp(arg, "-newer") == 0) {
+ else if (parm == PARM_newer)
+ {
action_newer *ap;
struct stat stat_newer;
if (!*++argv)
@@ -482,7 +555,8 @@ static action*** parse_params(char **argv)
}
#endif
#if ENABLE_FEATURE_FIND_INUM
- else if (strcmp(arg, "-inum") == 0) {
+ else if (parm == PARM_inum)
+ {
action_inum *ap;
if (!*++argv)
bb_error_msg_and_die(bb_msg_requires_arg, arg);
@@ -491,7 +565,8 @@ static action*** parse_params(char **argv)
}
#endif
#if ENABLE_FEATURE_FIND_EXEC
- else if (strcmp(arg, "-exec") == 0) {
+ else if (parm == PARM_exec)
+ {
int i;
action_exec *ap;
need_print = 0;
@@ -516,7 +591,8 @@ static action*** parse_params(char **argv)
}
#endif
#if ENABLE_FEATURE_FIND_USER
- else if (strcmp(arg, "-user") == 0) {
+ else if (parm == PARM_user)
+ {
action_user *ap;
if (!*++argv)
bb_error_msg_and_die(bb_msg_requires_arg, arg);
@@ -527,7 +603,8 @@ static action*** parse_params(char **argv)
}
#endif
#if ENABLE_DESKTOP
- else if (LONE_CHAR(arg, '(')) {
+ else if (parm == PARM_char_brace)
+ {
action_paren *ap;
char **endarg;
unsigned nested = 1;
@@ -548,11 +625,13 @@ static action*** parse_params(char **argv)
*endarg = (char*) ")"; /* restore NULLed parameter */
argv = endarg;
}
- else if (strcmp(arg, "-prune") == 0) {
+ else if (parm == PARM_prune)
+ {
USE_FEATURE_FIND_NOT( invert_flag = 0; )
(void) ALLOC_ACTION(prune);
}
- else if (strcmp(arg, "-size") == 0) {
+ else if (parm == PARM_size)
+ {
action_size *ap;
if (!*++argv)
bb_error_msg_and_die(bb_msg_requires_arg, arg);
@@ -564,7 +643,6 @@ static action*** parse_params(char **argv)
bb_show_usage();
argv++;
}
-
return appp;
#undef ALLOC_ACTION
}