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find: support for !

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This commit is contained in:
Denis Vlasenko 2007-02-04 17:11:25 +00:00
parent 10b7996c1b
commit cf787cf3a5
3 changed files with 56 additions and 9 deletions
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18
findutils/Config.in
View File

@ -90,6 +90,24 @@ config FEATURE_FIND_USER
help
Support the 'find -user' option for searching by username or uid.
config FEATURE_FIND_NOT
bool "Enable the 'not' (!) operator"
default y
depends on FIND
help
Support the '!' operator to invert the test results. If 'Enable
full-blown desktop' is enabled, then will also the non-POSIX
'-not' be supported.
config FEATURE_FIND_NOT
bool "Enable the 'not' (!) operator"
default y
depends on FIND
help
Support the '!' operator to invert the test results. If 'Enable
full-blown desktop' is enabled, then will also the non-POSIX
'-not' be supported.
config GREP
bool "grep"
default n

45
findutils/find.c
View File

@ -55,6 +55,9 @@ typedef int (*action_fp)(const char *fileName, struct stat *statbuf, void *);
typedef struct {
action_fp f;
#if ENABLE_FEATURE_FIND_NOT
smallint invert;
#endif
} action;
#define ACTS(name, arg...) typedef struct { action a; arg; } action_##name;
#define ACTF(name) static int func_##name(const char *fileName, struct stat *statbuf, action_##name* ap)
@ -118,12 +121,20 @@ static int exec_actions(action ***appp, const char *fileName, struct stat *statb
cur_group = -1;
while ((app = appp[++cur_group])) {
cur_action = -1;
do {
while (1) {
ap = app[++cur_action];
} while (ap && (rc = ap->f(fileName, statbuf, ap)));
if (!ap) {
/* all actions in group were successful */
break;
if (!ap) {
/* all actions in group were successful */
return rc;
}
rc = ap->f(fileName, statbuf, ap);
#if ENABLE_FEATURE_FIND_NOT
if (ap->invert) rc = !rc;
#endif
if (!rc) {
/* current group failed, try next */
break;
}
}
}
return rc;
@ -331,6 +342,7 @@ static action*** parse_params(char **argv)
action*** appp;
unsigned cur_group = 0;
unsigned cur_action = 0;
USE_FEATURE_FIND_NOT( smallint invert_flag = 0; )
action* alloc_action(int sizeof_struct, action_fp f)
{
@ -339,11 +351,12 @@ static action*** parse_params(char **argv)
appp[cur_group][cur_action++] = ap = xmalloc(sizeof_struct);
appp[cur_group][cur_action] = NULL;
ap->f = f;
USE_FEATURE_FIND_NOT( ap->invert = invert_flag; )
return ap;
}
#define ALLOC_ACTION(name) (action_##name*)alloc_action(sizeof(action_##name), (action_fp) func_##name)
appp = xzalloc(2 * sizeof(*appp)); /* appp[0],[1] == NULL */
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
@ -367,27 +380,39 @@ static action*** parse_params(char **argv)
if (strcmp(arg, "-a") == 0
USE_DESKTOP(|| strcmp(arg, "-and") == 0)
) {
/* no special handling required */
USE_FEATURE_FIND_NOT( invert_flag = 0; )
/* no further special handling required */
}
else if (strcmp(arg, "-o") == 0
USE_DESKTOP(|| strcmp(arg, "-or") == 0)
) {
/* start new OR group */
USE_FEATURE_FIND_NOT( invert_flag = 0; )
cur_group++;
appp = xrealloc(appp, (cur_group+2) * sizeof(*appp));
appp[cur_group] = NULL;
/*appp[cur_group] = NULL; - already NULL */
appp[cur_group+1] = NULL;
cur_action = 0;
}
#if ENABLE_FEATURE_FIND_NOT
else if (LONE_CHAR(arg, '!')
USE_DESKTOP(|| strcmp(arg, "-not") == 0)
) {
invert_flag = 1;
}
#endif
/* --- Tests and actions --- */
else if (strcmp(arg, "-print") == 0) {
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) {
need_print = 0;
USE_FEATURE_FIND_NOT( invert_flag = 0; )
(void) ALLOC_ACTION(print0);
}
#endif
@ -471,6 +496,7 @@ static action*** parse_params(char **argv)
int i;
action_exec *ap;
need_print = 0;
USE_FEATURE_FIND_NOT( invert_flag = 0; )
ap = ALLOC_ACTION(exec);
ap->exec_argv = ++argv; /* first arg after -exec */
ap->exec_argc = 0;
@ -524,6 +550,7 @@ static action*** parse_params(char **argv)
argv = endarg;
}
else if (strcmp(arg, "-prune") == 0) {
USE_FEATURE_FIND_NOT( invert_flag = 0; )
(void) ALLOC_ACTION(prune);
}
else if (strcmp(arg, "-size") == 0) {
@ -555,6 +582,8 @@ int find_main(int argc, char **argv)
for (firstopt = 1; firstopt < argc; firstopt++) {
if (argv[firstopt][0] == '-')
break;
if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!'))
break;
#if ENABLE_DESKTOP
if (LONE_CHAR(argv[firstopt], '('))
break;

2
shell/msh.c
View File

@ -1278,7 +1278,7 @@ struct op *scantree(struct op *head)
DBGPRINTF5(("SCANTREE: checking node %p\n", head));
if ((head->type != TDOT) && (strcmp(".", head->words[0]) == 0)) {
if ((head->type != TDOT) && LONE_CHAR(head->words[0], '.')) {
DBGPRINTF5(("SCANTREE: dot found in node %p\n", head));
return head;
}