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- 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
This commit is contained in:
Bernhard Reutner-Fischer
parent
32773aca55
commit
557b458767
158
findutils/find.c
158
findutils/find.c
@ -336,13 +336,81 @@ static const char* plus_minus_num(const char* str)
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}
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#endif
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#define PARM_a 0
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#define PARM_o 1
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#define PARM_char_not (PARM_o + ENABLE_FEATURE_FIND_NOT)
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#define PARM_print (PARM_char_not + 1)
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#define PARM_print0 (PARM_print + ENABLE_FEATURE_FIND_PRINT0)
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#define PARM_name (PARM_print0 + 1)
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#define PARM_type (PARM_name + ENABLE_FEATURE_FIND_TYPE)
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#define PARM_perm (PARM_type + ENABLE_FEATURE_FIND_PERM)
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#define PARM_mtime (PARM_perm + ENABLE_FEATURE_FIND_MTIME)
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#define PARM_mmin (PARM_mtime + ENABLE_FEATURE_FIND_MMIN)
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#define PARM_newer (PARM_mmin + ENABLE_FEATURE_FIND_NEWER)
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#define PARM_inum (PARM_newer + ENABLE_FEATURE_FIND_INUM)
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#define PARM_exec (PARM_inum + ENABLE_FEATURE_FIND_EXEC)
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#define PARM_user (PARM_exec + ENABLE_FEATURE_FIND_USER)
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#if ENABLE_DESKTOP
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#define PARM_and (PARM_user + 1)
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#define PARM_or (PARM_and + 1)
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#define PARM_not (PARM_or + ENABLE_FEATURE_FIND_NOT)
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#define PARM_char_brace (PARM_not + 1)
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#define PARM_prune (PARM_char_brace + 1)
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#define PARM_size (PARM_prune + 1)
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#endif
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static action*** parse_params(char **argv)
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{
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action*** appp;
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unsigned cur_group = 0;
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unsigned cur_action = 0;
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USE_FEATURE_FIND_NOT( bool invert_flag = 0; )
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const char * const params[] = {
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"-a",
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"-o",
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#if ENABLE_FEATURE_FIND_NOT
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"!",
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#endif
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"-print",
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#if ENABLE_FEATURE_FIND_PRINT0
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"-print0",
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#endif
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"-name",
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#if ENABLE_FEATURE_FIND_TYPE
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"-type",
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#endif
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#if ENABLE_FEATURE_FIND_PERM
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"-perm",
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#endif
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#if ENABLE_FEATURE_FIND_MTIME
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"-mtime",
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#endif
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#if ENABLE_FEATURE_FIND_MMIN
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"-mmin",
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#endif
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#if ENABLE_FEATURE_FIND_NEWER
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"-newer",
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#endif
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#if ENABLE_FEATURE_FIND_INUM
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"-inum",
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#endif
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#if ENABLE_FEATURE_FIND_EXEC
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"-exec",
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#endif
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#if ENABLE_FEATURE_FIND_USER
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"-user",
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#endif
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#if ENABLE_DESKTOP
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"-and",
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"-or",
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# if ENABLE_FEATURE_FIND_NOT
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"-not",
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# endif
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"(",
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"-prune",
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"-size",
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#endif
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NULL
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};
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action* alloc_action(int sizeof_struct, action_fp f)
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{
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action *ap;
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@ -358,33 +426,31 @@ static action*** parse_params(char **argv)
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appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */
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// Actions have side effects and return a true or false value
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// We implement: -print, -print0, -exec
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// The rest are tests.
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// Tests and actions are grouped by operators
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// ( expr ) Force precedence
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// ! expr True if expr is false
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// -not expr Same as ! expr
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// expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false
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// expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true
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// expr1 , expr2 List; both expr1 and expr2 are always evaluated
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// We implement: (), -a, -o
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//XXX: TODO: Use index_in_str_array here
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/* Actions have side effects and return a true or false value
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* We implement: -print, -print0, -exec
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*
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* The rest are tests.
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*
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* Tests and actions are grouped by operators
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* ( expr ) Force precedence
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* ! expr True if expr is false
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* -not expr Same as ! expr
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* expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false
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* expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true
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* expr1 , expr2 List; both expr1 and expr2 are always evaluated
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* We implement: (), -a, -o
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*/
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while (*argv) {
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const char *arg = argv[0];
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const char *arg1 = argv[1];
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int parm = index_in_str_array(params, arg);
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/* --- Operators --- */
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if (strcmp(arg, "-a") == 0
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USE_DESKTOP(|| strcmp(arg, "-and") == 0)
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) {
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if (parm == PARM_a USE_DESKTOP(|| parm == PARM_and))
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{
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/* no further special handling required */
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}
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else if (strcmp(arg, "-o") == 0
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USE_DESKTOP(|| strcmp(arg, "-or") == 0)
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) {
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else if (parm == PARM_o USE_DESKTOP(|| parm == PARM_or))
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{
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/* start new OR group */
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cur_group++;
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appp = xrealloc(appp, (cur_group+2) * sizeof(*appp));
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@ -393,29 +459,31 @@ static action*** parse_params(char **argv)
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cur_action = 0;
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}
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#if ENABLE_FEATURE_FIND_NOT
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else if (LONE_CHAR(arg, '!')
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USE_DESKTOP(|| strcmp(arg, "-not") == 0)
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) {
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else if (parm == PARM_char_not USE_DESKTOP(|| parm == PARM_not))
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{
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/* also handles "find ! ! -name 'foo*'" */
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invert_flag ^= 1;
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}
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#endif
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/* --- Tests and actions --- */
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else if (strcmp(arg, "-print") == 0) {
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else if (parm == PARM_print)
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{
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need_print = 0;
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/* GNU find ignores '!' here: "find ! -print" */
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USE_FEATURE_FIND_NOT( invert_flag = 0; )
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(void) ALLOC_ACTION(print);
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}
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#if ENABLE_FEATURE_FIND_PRINT0
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else if (strcmp(arg, "-print0") == 0) {
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else if (parm == PARM_print0)
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{
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need_print = 0;
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USE_FEATURE_FIND_NOT( invert_flag = 0; )
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(void) ALLOC_ACTION(print0);
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}
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#endif
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else if (strcmp(arg, "-name") == 0) {
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else if (parm == PARM_name)
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{
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action_name *ap;
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if (!*++argv)
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bb_error_msg_and_die(bb_msg_requires_arg, arg);
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@ -423,7 +491,8 @@ static action*** parse_params(char **argv)
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ap->pattern = arg1;
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}
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#if ENABLE_FEATURE_FIND_TYPE
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else if (strcmp(arg, "-type") == 0) {
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else if (parm == PARM_type)
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{
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action_type *ap;
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if (!*++argv)
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bb_error_msg_and_die(bb_msg_requires_arg, arg);
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@ -438,7 +507,8 @@ static action*** parse_params(char **argv)
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* -perm -mode All of the permission bits mode are set for the file.
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* -perm +mode Any of the permission bits mode are set for the file.
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*/
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else if (strcmp(arg, "-perm") == 0) {
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else if (parm == PARM_perm)
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{
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action_perm *ap;
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if (!*++argv)
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bb_error_msg_and_die(bb_msg_requires_arg, arg);
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@ -451,7 +521,8 @@ static action*** parse_params(char **argv)
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}
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#endif
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#if ENABLE_FEATURE_FIND_MTIME
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else if (strcmp(arg, "-mtime") == 0) {
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else if (parm == PARM_mtime)
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{
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action_mtime *ap;
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if (!*++argv)
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bb_error_msg_and_die(bb_msg_requires_arg, arg);
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@ -461,7 +532,8 @@ static action*** parse_params(char **argv)
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}
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#endif
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#if ENABLE_FEATURE_FIND_MMIN
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else if (strcmp(arg, "-mmin") == 0) {
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else if (parm == PARM_mmin)
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{
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action_mmin *ap;
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if (!*++argv)
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bb_error_msg_and_die(bb_msg_requires_arg, arg);
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@ -471,7 +543,8 @@ static action*** parse_params(char **argv)
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}
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#endif
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#if ENABLE_FEATURE_FIND_NEWER
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else if (strcmp(arg, "-newer") == 0) {
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else if (parm == PARM_newer)
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{
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action_newer *ap;
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struct stat stat_newer;
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if (!*++argv)
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@ -482,7 +555,8 @@ static action*** parse_params(char **argv)
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}
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#endif
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#if ENABLE_FEATURE_FIND_INUM
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else if (strcmp(arg, "-inum") == 0) {
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else if (parm == PARM_inum)
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{
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action_inum *ap;
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if (!*++argv)
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bb_error_msg_and_die(bb_msg_requires_arg, arg);
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@ -491,7 +565,8 @@ static action*** parse_params(char **argv)
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}
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#endif
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#if ENABLE_FEATURE_FIND_EXEC
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else if (strcmp(arg, "-exec") == 0) {
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else if (parm == PARM_exec)
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{
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int i;
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action_exec *ap;
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need_print = 0;
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@ -516,7 +591,8 @@ static action*** parse_params(char **argv)
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}
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#endif
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#if ENABLE_FEATURE_FIND_USER
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else if (strcmp(arg, "-user") == 0) {
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else if (parm == PARM_user)
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{
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action_user *ap;
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if (!*++argv)
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bb_error_msg_and_die(bb_msg_requires_arg, arg);
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@ -527,7 +603,8 @@ static action*** parse_params(char **argv)
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}
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#endif
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#if ENABLE_DESKTOP
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else if (LONE_CHAR(arg, '(')) {
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else if (parm == PARM_char_brace)
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{
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action_paren *ap;
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char **endarg;
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unsigned nested = 1;
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@ -548,11 +625,13 @@ static action*** parse_params(char **argv)
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*endarg = (char*) ")"; /* restore NULLed parameter */
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argv = endarg;
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}
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else if (strcmp(arg, "-prune") == 0) {
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else if (parm == PARM_prune)
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{
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USE_FEATURE_FIND_NOT( invert_flag = 0; )
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(void) ALLOC_ACTION(prune);
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}
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else if (strcmp(arg, "-size") == 0) {
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else if (parm == PARM_size)
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{
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action_size *ap;
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if (!*++argv)
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bb_error_msg_and_die(bb_msg_requires_arg, arg);
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@ -564,7 +643,6 @@ static action*** parse_params(char **argv)
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bb_show_usage();
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argv++;
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}
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return appp;
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#undef ALLOC_ACTION
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}
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