-
-
Save lsegal/497391 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // Copyright 2007-2010 Wincent Colaiuta. All rights reserved. | |
| // | |
| // Redistribution and use in source and binary forms, with or without | |
| // modification, are permitted provided that the following conditions are met: | |
| // | |
| // 1. Redistributions of source code must retain the above copyright notice, | |
| // this list of conditions and the following disclaimer. | |
| // 2. Redistributions in binary form must reproduce the above copyright notice, | |
| // this list of conditions and the following disclaimer in the documentation | |
| // and/or other materials provided with the distribution. | |
| // | |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE | |
| // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| // POSSIBILITY OF SUCH DAMAGE. | |
| #include <ruby.h> | |
| #include <errno.h> | |
| #include <unistd.h> | |
| #include "ruby_compat.h" | |
| // helper function needed by rb_iterate; see: | |
| // http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/144100 | |
| VALUE call_chdir(VALUE dir) | |
| { | |
| return rb_funcall(rb_cDir, rb_intern("chdir"), 1, dir); | |
| } | |
| // helper function needed by rb_iterate | |
| VALUE yield_block(VALUE ignored, VALUE block) | |
| { | |
| return rb_funcall(block, rb_intern("call"), 0); | |
| } | |
| /* @overload mkdtemp(template) | |
| * Creates temporary directories. It is a wrapper for the mkdtemp() function. | |
| * | |
| * If supplied a block, performs a Dir.chdir into the created directory and | |
| * yields to the block: | |
| * | |
| * # this: # is a shorthand for: | |
| * Dir.mkdtemp do # dir = Dir.mkdtemp | |
| * puts Dir.pwd # Dir.chdir dir do | |
| * end # puts Dir.pwd | |
| * # end | |
| * | |
| * @yield an optional block to perform any commands inside the directory. | |
| * @param [String, nil] template a template describing the desired form | |
| * of the directory name. If no template is supplied, "/tmp/temp.XXXXXX" | |
| * is used as the default. | |
| * @return [String] the path to the directory | |
| * | |
| * @note The exact implementation of mkdtemp() may vary depending on the | |
| * target system. For example, on Mac OS X at the time of writing, the man page | |
| * states that the template may contain "some number" of "Xs" on the end of the | |
| * string, whereas on Red Hat Enterprise Linux it states that the template | |
| * suffix "must be XXXXXX". | |
| */ | |
| static VALUE dir_mkdtemp_m(int argc, VALUE *argv, VALUE self) | |
| { | |
| VALUE template, block; | |
| char *c_template; | |
| char *path; | |
| // process arguments | |
| if (rb_scan_args(argc, argv, "01&", &template, &block) == 0) // 0 mandatory, 1 optional, 1 block | |
| template = Qnil; // default to nil if no argument passed | |
| if (NIL_P(template)) | |
| template = rb_str_new2("/tmp/temp.XXXXXX"); // fallback to this template if passed nil | |
| SafeStringValue(template); // raises if template is tainted and SAFE level > 0 | |
| template = StringValue(template); // duck typing support | |
| // create temporary storage | |
| c_template = malloc(RSTRING_LEN(template) + 1); | |
| if (!c_template) | |
| rb_raise(rb_eNoMemError, "failed to allocate %ld bytes of template storage", RSTRING_LEN(template) + 1); | |
| strncpy(c_template, RSTRING_PTR(template), RSTRING_LEN(template)); | |
| c_template[RSTRING_LEN(template)] = 0; // NUL-terminate | |
| // fill out template | |
| path = mkdtemp(c_template); | |
| if (path) | |
| template = rb_str_new2(path); | |
| free(c_template); | |
| if (path == NULL) | |
| rb_raise(rb_eSystemCallError, "mkdtemp failed (error #%d: %s)", errno, strerror(errno)); | |
| // yield to block if given, inside Dir.chdir | |
| if (rb_block_given_p() == Qtrue) | |
| rb_iterate(call_chdir, template, yield_block, block); | |
| return template; | |
| } | |
| void Init_mkdtemp() | |
| { | |
| #if 0 | |
| // for Yardoc, need to fake this here | |
| VALUE rb_cDir = rb_define_class("Dir", rb_cObject); | |
| #endif | |
| rb_define_singleton_method(rb_cDir, "mkdtemp", dir_mkdtemp_m, -1); | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment