mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
adff6d4477
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29015 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
661 lines
17 KiB
C
661 lines
17 KiB
C
#include "ruby.h"
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static VALUE rb_cPathname;
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static ID id_at_path, id_to_path;
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static VALUE
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get_strpath(VALUE obj)
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{
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VALUE strpath;
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strpath = rb_ivar_get(obj, id_at_path);
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if (TYPE(strpath) != T_STRING)
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rb_raise(rb_eTypeError, "unexpected @path");
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return strpath;
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}
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static void
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set_strpath(VALUE obj, VALUE val)
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{
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rb_ivar_set(obj, id_at_path, val);
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}
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/*
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* Create a Pathname object from the given String (or String-like object).
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* If +path+ contains a NUL character (<tt>\0</tt>), an ArgumentError is raised.
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*/
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static VALUE
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path_initialize(VALUE self, VALUE arg)
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{
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VALUE str;
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if (TYPE(arg) == T_STRING) {
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str = arg;
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}
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else {
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str = rb_check_funcall(arg, id_to_path, 0, NULL);
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if (str == Qundef)
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str = arg;
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StringValue(str);
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}
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if (memchr(RSTRING_PTR(str), '\0', RSTRING_LEN(str)))
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rb_raise(rb_eArgError, "pathname contains null byte");
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str = rb_obj_dup(str);
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set_strpath(self, str);
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OBJ_INFECT(self, str);
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return self;
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}
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static VALUE
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path_freeze(VALUE self)
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{
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rb_call_super(0, 0);
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rb_str_freeze(get_strpath(self));
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return self;
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}
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static VALUE
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path_taint(VALUE self)
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{
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rb_call_super(0, 0);
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rb_obj_taint(get_strpath(self));
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return self;
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}
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static VALUE
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path_untaint(VALUE self)
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{
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rb_call_super(0, 0);
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rb_obj_untaint(get_strpath(self));
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return self;
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}
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/*
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* Compare this pathname with +other+. The comparison is string-based.
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* Be aware that two different paths (<tt>foo.txt</tt> and <tt>./foo.txt</tt>)
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* can refer to the same file.
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*/
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static VALUE
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path_eq(VALUE self, VALUE other)
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{
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if (!rb_obj_is_kind_of(other, rb_cPathname))
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return Qfalse;
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return rb_str_equal(get_strpath(self), get_strpath(other));
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}
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/*
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* Provides for comparing pathnames, case-sensitively.
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*/
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static VALUE
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path_cmp(VALUE self, VALUE other)
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{
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VALUE s1, s2;
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char *p1, *p2;
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char *e1, *e2;
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if (!rb_obj_is_kind_of(other, rb_cPathname))
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return Qnil;
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s1 = get_strpath(self);
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s2 = get_strpath(other);
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p1 = RSTRING_PTR(s1);
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p2 = RSTRING_PTR(s2);
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e1 = p1 + RSTRING_LEN(s1);
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e2 = p2 + RSTRING_LEN(s2);
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while (p1 < e1 && p2 < e2) {
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int c1, c2;
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c1 = (unsigned char)*p1++;
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c2 = (unsigned char)*p2++;
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if (c1 == '/') c1 = '\0';
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if (c2 == '/') c2 = '\0';
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if (c1 != c2) {
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if (c1 < c2)
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return INT2FIX(-1);
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else
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return INT2FIX(1);
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}
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}
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if (p1 < e1)
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return INT2FIX(1);
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if (p2 < e2)
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return INT2FIX(-1);
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return INT2FIX(0);
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}
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/* :nodoc: */
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static VALUE
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path_hash(VALUE self)
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{
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return INT2FIX(rb_str_hash(get_strpath(self)));
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}
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/*
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* call-seq:
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* pathname.to_s -> string
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* pathname.to_path -> string
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*
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* Return the path as a String.
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*
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* to_path is implemented so Pathname objects are usable with File.open, etc.
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*/
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static VALUE
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path_to_s(VALUE self)
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{
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return rb_obj_dup(get_strpath(self));
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}
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/* :nodoc: */
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static VALUE
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path_inspect(VALUE self)
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{
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const char *c = rb_obj_classname(self);
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VALUE str = get_strpath(self);
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return rb_sprintf("#<%s:%s>", c, RSTRING_PTR(str));
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}
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/*
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* Return a pathname which is substituted by String#sub.
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*/
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static VALUE
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path_sub(int argc, VALUE *argv, VALUE self)
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{
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VALUE str = get_strpath(self);
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if (rb_block_given_p()) {
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str = rb_block_call(str, rb_intern("sub"), argc, argv, 0, 0);
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}
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else {
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str = rb_funcall2(str, rb_intern("sub"), argc, argv);
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}
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return rb_class_new_instance(1, &str, rb_obj_class(self));
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}
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/*
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* Return a pathname which the extension of the basename is substituted by
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* <i>repl</i>.
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*
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* If self has no extension part, <i>repl</i> is appended.
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*/
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static VALUE
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path_sub_ext(VALUE self, VALUE repl)
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{
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VALUE str = get_strpath(self);
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VALUE str2;
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long extlen;
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const char *ext;
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const char *p;
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StringValue(repl);
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p = RSTRING_PTR(str);
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ext = ruby_find_extname(p, &extlen);
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if (ext == NULL) {
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ext = p + RSTRING_LEN(str);
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}
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else if (extlen <= 1) {
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ext += extlen;
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}
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str2 = rb_str_dup(str);
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rb_str_resize(str2, ext-p);
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rb_str_append(str2, repl);
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OBJ_INFECT(str2, str);
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return rb_class_new_instance(1, &str2, rb_obj_class(self));
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}
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/* Facade for File */
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/*
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* Returns the real (absolute) pathname of +self+ in the actual
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* filesystem not containing symlinks or useless dots.
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*
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* All components of the pathname must exist when this method is
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* called.
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*
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*/
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static VALUE
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path_realpath(int argc, VALUE *argv, VALUE self)
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{
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VALUE basedir, str;
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rb_scan_args(argc, argv, "01", &basedir);
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str = rb_funcall(rb_cFile, rb_intern("realpath"), 2, get_strpath(self), basedir);
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return rb_class_new_instance(1, &str, rb_obj_class(self));
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}
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/*
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* Returns the real (absolute) pathname of +self+ in the actual filesystem.
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* The real pathname doesn't contain symlinks or useless dots.
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*
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* The last component of the real pathname can be nonexistent.
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*/
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static VALUE
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path_realdirpath(int argc, VALUE *argv, VALUE self)
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{
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VALUE basedir, str;
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rb_scan_args(argc, argv, "01", &basedir);
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str = rb_funcall(rb_cFile, rb_intern("realdirpath"), 2, get_strpath(self), basedir);
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return rb_class_new_instance(1, &str, rb_obj_class(self));
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}
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/*
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* See <tt>File.atime</tt>. Returns last access time.
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*/
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static VALUE
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path_atime(VALUE self)
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{
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return rb_funcall(rb_cFile, rb_intern("atime"), 1, get_strpath(self));
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}
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/*
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* See <tt>File.ctime</tt>. Returns last (directory entry, not file) change time.
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*/
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static VALUE
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path_ctime(VALUE self)
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{
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return rb_funcall(rb_cFile, rb_intern("ctime"), 1, get_strpath(self));
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}
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/*
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* See <tt>File.mtime</tt>. Returns last modification time.
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*/
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static VALUE
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path_mtime(VALUE self)
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{
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return rb_funcall(rb_cFile, rb_intern("mtime"), 1, get_strpath(self));
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}
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/*
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* See <tt>File.chmod</tt>. Changes permissions.
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*/
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static VALUE
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path_chmod(VALUE self, VALUE mode)
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{
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return rb_funcall(rb_cFile, rb_intern("chmod"), 2, mode, get_strpath(self));
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}
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/*
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* See <tt>File.lchmod</tt>.
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*/
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static VALUE
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path_lchmod(VALUE self, VALUE mode)
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{
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return rb_funcall(rb_cFile, rb_intern("lchmod"), 2, mode, get_strpath(self));
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}
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/*
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* See <tt>File.chown</tt>. Change owner and group of file.
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*/
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static VALUE
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path_chown(VALUE self, VALUE owner, VALUE group)
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{
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return rb_funcall(rb_cFile, rb_intern("chown"), 3, owner, group, get_strpath(self));
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}
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/*
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* See <tt>File.lchown</tt>.
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*/
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static VALUE
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path_lchown(VALUE self, VALUE owner, VALUE group)
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{
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return rb_funcall(rb_cFile, rb_intern("lchown"), 3, owner, group, get_strpath(self));
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}
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/*
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* call-seq:
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* pathname.fnmatch(pattern, [flags]) -> string
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* pathname.fnmatch?(pattern, [flags]) -> string
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*
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* See <tt>File.fnmatch</tt>. Return +true+ if the receiver matches the given
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* pattern.
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*/
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static VALUE
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path_fnmatch(int argc, VALUE *argv, VALUE self)
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{
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VALUE str = get_strpath(self);
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VALUE pattern, flags;
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if (rb_scan_args(argc, argv, "11", &pattern, &flags) == 1)
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return rb_funcall(rb_cFile, rb_intern("fnmatch"), 2, pattern, str);
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else
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return rb_funcall(rb_cFile, rb_intern("fnmatch"), 3, pattern, str, flags);
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}
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/*
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* See <tt>File.ftype</tt>. Returns "type" of file ("file", "directory",
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* etc).
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*/
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static VALUE
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path_ftype(VALUE self)
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{
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return rb_funcall(rb_cFile, rb_intern("ftype"), 1, get_strpath(self));
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}
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/*
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* call-seq:
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* pathname.make_link(old)
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*
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* See <tt>File.link</tt>. Creates a hard link at _pathname_.
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*/
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static VALUE
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path_make_link(VALUE self, VALUE old)
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{
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return rb_funcall(rb_cFile, rb_intern("link"), 2, old, get_strpath(self));
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}
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/*
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* See <tt>File.open</tt>. Opens the file for reading or writing.
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*/
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static VALUE
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path_open(int argc, VALUE *argv, VALUE self)
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{
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VALUE args[4];
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int n;
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args[0] = get_strpath(self);
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n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
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if (rb_block_given_p()) {
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return rb_block_call(rb_cFile, rb_intern("open"), 1+n, args, 0, 0);
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}
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else {
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return rb_funcall2(rb_cFile, rb_intern("open"), 1+n, args);
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}
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}
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/*
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* See <tt>File.readlink</tt>. Read symbolic link.
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*/
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static VALUE
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path_readlink(VALUE self)
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{
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VALUE str;
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str = rb_funcall(rb_cFile, rb_intern("readlink"), 1, get_strpath(self));
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return rb_class_new_instance(1, &str, rb_obj_class(self));
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}
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/*
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* See <tt>File.rename</tt>. Rename the file.
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*/
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static VALUE
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path_rename(VALUE self, VALUE to)
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{
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return rb_funcall(rb_cFile, rb_intern("rename"), 2, get_strpath(self), to);
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}
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/*
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* See <tt>File.stat</tt>. Returns a <tt>File::Stat</tt> object.
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*/
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static VALUE
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path_stat(VALUE self)
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{
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return rb_funcall(rb_cFile, rb_intern("stat"), 1, get_strpath(self));
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}
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/*
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* See <tt>File.lstat</tt>.
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*/
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static VALUE
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path_lstat(VALUE self)
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{
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return rb_funcall(rb_cFile, rb_intern("lstat"), 1, get_strpath(self));
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}
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/*
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* call-seq:
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* pathname.make_symlink(old)
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*
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* See <tt>File.symlink</tt>. Creates a symbolic link.
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*/
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static VALUE
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path_make_symlink(VALUE self, VALUE old)
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{
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return rb_funcall(rb_cFile, rb_intern("symlink"), 2, old, get_strpath(self));
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}
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/*
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* See <tt>File.truncate</tt>. Truncate the file to +length+ bytes.
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*/
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static VALUE
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path_truncate(VALUE self, VALUE length)
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{
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return rb_funcall(rb_cFile, rb_intern("truncate"), 2, get_strpath(self), length);
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}
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/*
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* See <tt>File.utime</tt>. Update the access and modification times.
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*/
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static VALUE
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path_utime(VALUE self, VALUE atime, VALUE mtime)
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{
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return rb_funcall(rb_cFile, rb_intern("utime"), 3, atime, mtime, get_strpath(self));
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}
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/*
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* See <tt>File.basename</tt>. Returns the last component of the path.
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*/
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static VALUE
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path_basename(int argc, VALUE *argv, VALUE self)
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{
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VALUE str = get_strpath(self);
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VALUE fext;
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if (rb_scan_args(argc, argv, "01", &fext) == 0)
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str = rb_funcall(rb_cFile, rb_intern("basename"), 1, str);
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else
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str = rb_funcall(rb_cFile, rb_intern("basename"), 2, str, fext);
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return rb_class_new_instance(1, &str, rb_obj_class(self));
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}
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/*
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* == Pathname
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*
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* Pathname represents a pathname which locates a file in a filesystem.
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* The pathname depends on OS: Unix, Windows, etc.
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* Pathname library works with pathnames of local OS.
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* However non-Unix pathnames are supported experimentally.
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*
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* It does not represent the file itself.
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* A Pathname can be relative or absolute. It's not until you try to
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* reference the file that it even matters whether the file exists or not.
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*
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* Pathname is immutable. It has no method for destructive update.
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*
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* The value of this class is to manipulate file path information in a neater
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* way than standard Ruby provides. The examples below demonstrate the
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* difference. *All* functionality from File, FileTest, and some from Dir and
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* FileUtils is included, in an unsurprising way. It is essentially a facade for
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* all of these, and more.
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*
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* == Examples
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*
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* === Example 1: Using Pathname
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*
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* require 'pathname'
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* pn = Pathname.new("/usr/bin/ruby")
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* size = pn.size # 27662
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* isdir = pn.directory? # false
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* dir = pn.dirname # Pathname:/usr/bin
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* base = pn.basename # Pathname:ruby
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* dir, base = pn.split # [Pathname:/usr/bin, Pathname:ruby]
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* data = pn.read
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* pn.open { |f| _ }
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* pn.each_line { |line| _ }
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*
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* === Example 2: Using standard Ruby
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*
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* pn = "/usr/bin/ruby"
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* size = File.size(pn) # 27662
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* isdir = File.directory?(pn) # false
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* dir = File.dirname(pn) # "/usr/bin"
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* base = File.basename(pn) # "ruby"
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* dir, base = File.split(pn) # ["/usr/bin", "ruby"]
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* data = File.read(pn)
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* File.open(pn) { |f| _ }
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* File.foreach(pn) { |line| _ }
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*
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* === Example 3: Special features
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*
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* p1 = Pathname.new("/usr/lib") # Pathname:/usr/lib
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* p2 = p1 + "ruby/1.8" # Pathname:/usr/lib/ruby/1.8
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* p3 = p1.parent # Pathname:/usr
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* p4 = p2.relative_path_from(p3) # Pathname:lib/ruby/1.8
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* pwd = Pathname.pwd # Pathname:/home/gavin
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* pwd.absolute? # true
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* p5 = Pathname.new "." # Pathname:.
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* p5 = p5 + "music/../articles" # Pathname:music/../articles
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* p5.cleanpath # Pathname:articles
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* p5.realpath # Pathname:/home/gavin/articles
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* p5.children # [Pathname:/home/gavin/articles/linux, ...]
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*
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* == Breakdown of functionality
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*
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* === Core methods
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*
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* These methods are effectively manipulating a String, because that's
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* all a path is. Except for #mountpoint?, #children, #each_child,
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* #realdirpath and #realpath, they don't access the filesystem.
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*
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* - +
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* - #join
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* - #parent
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* - #root?
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* - #absolute?
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* - #relative?
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* - #relative_path_from
|
|
* - #each_filename
|
|
* - #cleanpath
|
|
* - #realpath
|
|
* - #realdirpath
|
|
* - #children
|
|
* - #each_child
|
|
* - #mountpoint?
|
|
*
|
|
* === File status predicate methods
|
|
*
|
|
* These methods are a facade for FileTest:
|
|
* - #blockdev?
|
|
* - #chardev?
|
|
* - #directory?
|
|
* - #executable?
|
|
* - #executable_real?
|
|
* - #exist?
|
|
* - #file?
|
|
* - #grpowned?
|
|
* - #owned?
|
|
* - #pipe?
|
|
* - #readable?
|
|
* - #world_readable?
|
|
* - #readable_real?
|
|
* - #setgid?
|
|
* - #setuid?
|
|
* - #size
|
|
* - #size?
|
|
* - #socket?
|
|
* - #sticky?
|
|
* - #symlink?
|
|
* - #writable?
|
|
* - #world_writable?
|
|
* - #writable_real?
|
|
* - #zero?
|
|
*
|
|
* === File property and manipulation methods
|
|
*
|
|
* These methods are a facade for File:
|
|
* - #atime
|
|
* - #ctime
|
|
* - #mtime
|
|
* - #chmod(mode)
|
|
* - #lchmod(mode)
|
|
* - #chown(owner, group)
|
|
* - #lchown(owner, group)
|
|
* - #fnmatch(pattern, *args)
|
|
* - #fnmatch?(pattern, *args)
|
|
* - #ftype
|
|
* - #make_link(old)
|
|
* - #open(*args, &block)
|
|
* - #readlink
|
|
* - #rename(to)
|
|
* - #stat
|
|
* - #lstat
|
|
* - #make_symlink(old)
|
|
* - #truncate(length)
|
|
* - #utime(atime, mtime)
|
|
* - #basename(*args)
|
|
* - #dirname
|
|
* - #extname
|
|
* - #expand_path(*args)
|
|
* - #split
|
|
*
|
|
* === Directory methods
|
|
*
|
|
* These methods are a facade for Dir:
|
|
* - Pathname.glob(*args)
|
|
* - Pathname.getwd / Pathname.pwd
|
|
* - #rmdir
|
|
* - #entries
|
|
* - #each_entry(&block)
|
|
* - #mkdir(*args)
|
|
* - #opendir(*args)
|
|
*
|
|
* === IO
|
|
*
|
|
* These methods are a facade for IO:
|
|
* - #each_line(*args, &block)
|
|
* - #read(*args)
|
|
* - #binread(*args)
|
|
* - #readlines(*args)
|
|
* - #sysopen(*args)
|
|
*
|
|
* === Utilities
|
|
*
|
|
* These methods are a mixture of Find, FileUtils, and others:
|
|
* - #find(&block)
|
|
* - #mkpath
|
|
* - #rmtree
|
|
* - #unlink / #delete
|
|
*
|
|
*
|
|
* == Method documentation
|
|
*
|
|
* As the above section shows, most of the methods in Pathname are facades. The
|
|
* documentation for these methods generally just says, for instance, "See
|
|
* FileTest.writable?", as you should be familiar with the original method
|
|
* anyway, and its documentation (e.g. through +ri+) will contain more
|
|
* information. In some cases, a brief description will follow.
|
|
*/
|
|
void
|
|
Init_pathname()
|
|
{
|
|
id_at_path = rb_intern("@path");
|
|
id_to_path = rb_intern("to_path");
|
|
|
|
rb_cPathname = rb_define_class("Pathname", rb_cObject);
|
|
rb_define_method(rb_cPathname, "initialize", path_initialize, 1);
|
|
rb_define_method(rb_cPathname, "freeze", path_freeze, 0);
|
|
rb_define_method(rb_cPathname, "taint", path_taint, 0);
|
|
rb_define_method(rb_cPathname, "untaint", path_untaint, 0);
|
|
rb_define_method(rb_cPathname, "==", path_eq, 1);
|
|
rb_define_method(rb_cPathname, "===", path_eq, 1);
|
|
rb_define_method(rb_cPathname, "eql?", path_eq, 1);
|
|
rb_define_method(rb_cPathname, "<=>", path_cmp, 1);
|
|
rb_define_method(rb_cPathname, "hash", path_hash, 0);
|
|
rb_define_method(rb_cPathname, "to_s", path_to_s, 0);
|
|
rb_define_method(rb_cPathname, "to_path", path_to_s, 0);
|
|
rb_define_method(rb_cPathname, "inspect", path_inspect, 0);
|
|
rb_define_method(rb_cPathname, "sub", path_sub, -1);
|
|
rb_define_method(rb_cPathname, "sub_ext", path_sub_ext, 1);
|
|
rb_define_method(rb_cPathname, "realpath", path_realpath, -1);
|
|
rb_define_method(rb_cPathname, "realdirpath", path_realdirpath, -1);
|
|
rb_define_method(rb_cPathname, "atime", path_atime, 0);
|
|
rb_define_method(rb_cPathname, "ctime", path_ctime, 0);
|
|
rb_define_method(rb_cPathname, "mtime", path_mtime, 0);
|
|
rb_define_method(rb_cPathname, "chmod", path_chmod, 1);
|
|
rb_define_method(rb_cPathname, "lchmod", path_lchmod, 1);
|
|
rb_define_method(rb_cPathname, "chown", path_chown, 2);
|
|
rb_define_method(rb_cPathname, "lchown", path_lchown, 2);
|
|
rb_define_method(rb_cPathname, "fnmatch", path_fnmatch, -1);
|
|
rb_define_method(rb_cPathname, "fnmatch?", path_fnmatch, -1);
|
|
rb_define_method(rb_cPathname, "ftype", path_ftype, 0);
|
|
rb_define_method(rb_cPathname, "make_link", path_make_link, 1);
|
|
rb_define_method(rb_cPathname, "open", path_open, -1);
|
|
rb_define_method(rb_cPathname, "readlink", path_readlink, 0);
|
|
rb_define_method(rb_cPathname, "rename", path_rename, 1);
|
|
rb_define_method(rb_cPathname, "stat", path_stat, 0);
|
|
rb_define_method(rb_cPathname, "lstat", path_lstat, 0);
|
|
rb_define_method(rb_cPathname, "make_symlink", path_make_symlink, 1);
|
|
rb_define_method(rb_cPathname, "truncate", path_truncate, 1);
|
|
rb_define_method(rb_cPathname, "utime", path_utime, 2);
|
|
rb_define_method(rb_cPathname, "basename", path_basename, -1);
|
|
}
|