add phl options

README

@@ -18,8 +18,30 @@ make or make DEBUG=1 for debug version
 ----------------
 usage: tinyfind [-H | -L | -P] [-EXdsx] [-f path] path ... [expression]
        tinyfind [-H | -L | -P] [-EXdsx] -f path [path ...] [expression]
+
+~~~~~~~
+OPRIONS
+~~~~~~~
+-H      Cause the file information and file type (see stat(2)) returned
+        for each symbolic link specified on the command line to be those
+        of the file referenced by the link, not the link itself.  If the
+        referenced file does not exist, the file information and type
+        will be for the link itself.  File information of all symbolic
+        links not on the command line is that of the link itself.
+
+-L      Cause the file information and file type (see stat(2)) returned
+        for each symbolic link to be those of the file referenced by the
+        link, not the link itself.  If the referenced file does not
+        exist, the file information and type will be for the link itself.
+        This option is equivalent to the deprecated -follow primary.
+
+-P      Cause the file information and file type (see stat(2)) returned
+        for each symbolic link to be those of the link itself.  This is
+        the default.
+
+
 ~~~~~~~~~~~~~~~~
-Logic Expression
+LOGIC EXPRESIONS
 ~~~~~~~~~~~~~~~~
 exps can linked with logic expression and '(', ')' 
 -not

README.md

@@ -1,6 +1,6 @@
 TINY-FIND 
 ==============
-Homework -- to fake a command -- find >_<!~~~
+    Homework -- to fake a command -- find >_<!~~~
 
 ## OVERVIEW
     This is my homework of "Linux Programming". 
@@ -12,7 +12,27 @@ Homework -- to fake a command -- find >_<!~~~
 ## SPECIFICATION
     usage: tinyfind [-H | -L | -P] [-EXdsx] [-f path] path ... [expression]
            tinyfind [-H | -L | -P] [-EXdsx] -f path [path ...] [expression]
-### Logic Expression
+### OPTIONS
+    -H      Cause the file information and file type (see stat(2)) returned
+            for each symbolic link specified on the command line to be those
+            of the file referenced by the link, not the link itself.  If the
+            referenced file does not exist, the file information and type
+            will be for the link itself.  File information of all symbolic
+            links not on the command line is that of the link itself.
+
+    -L      Cause the file information and file type (see stat(2)) returned
+            for each symbolic link to be those of the file referenced by the
+            link, not the link itself.  If the referenced file does not
+            exist, the file information and type will be for the link itself.
+            This option is equivalent to the deprecated -follow primary.
+
+    -P      Cause the file information and file type (see stat(2)) returned
+            for each symbolic link to be those of the link itself.  This is
+            the default.
+
+
+
+### LOGIC EXPRESSIONS
     exps can linked with logic expression and '(', ')' 
     -not
     -and

src/filter.c

@@ -100,7 +100,24 @@ int execute_filter(Filter * filter) {
 }
 
 bool execute_filter_tree(FTSENT * ent) {
-  stat(ent->fts_path, &status); 
+#ifdef DEBUG
+  fprintf(stderr, "file level: %d\n", ent->fts_level);
+#endif
+  switch(options.symbol_handle) {
+    case S_L:
+      stat(ent->fts_path, &status); 
+      break;
+    case S_P:
+      lstat(ent->fts_path, &status); 
+      break;
+    case S_H:
+      if (ent->fts_level <= 1) {
+        stat(ent->fts_path, &status); 
+      } else {
+        lstat(ent->fts_path, &status); 
+      }
+      break;
+  }
   cur_ent = ent;
   bool passed = execute_filter(filter_tree.passed);
   return passed;

src/parser.c

@@ -26,6 +26,9 @@ char * ALL_EXP[] = {
 };
 
 char * OPTIONS[] = {
+  "-P",
+  "-H",
+  "-L",
   "-exec",
   "-print0",
   "-print",