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Re: svn commit: r1068029 - /subversion/trunk/subversion/libsvn_subr/io.c

From: Daniel Shahaf <d.s_at_daniel.shahaf.name>
Date: Tue, 8 Feb 2011 04:58:51 +0200

The new function should be marked 'static'.

Also, they aren't in the proper namespaces: one is in svn_ despite being
file-private, and the other is in apr_'s space.

steveking_at_apache.org wrote on Mon, Feb 07, 2011 at 17:43:25 -0000:
> Author: steveking
> Date: Mon Feb 7 17:43:24 2011
> New Revision: 1068029
>
> URL: http://svn.apache.org/viewvc?rev=1068029&view=rev
> Log:
> Set the 'don't index' attribute on Windows on .svn the folders to prevent
> its content from being indexed by the Windows search service.
>
> * subversion/libsvn_subr/io.c
> (svn_utf8_to_unicode_path): new function, copy of utf8_to_unicode_path in
> the apr library since it's not exported.
> (apr_win_file_attrs_set): new function to set Windows file attributes.
> (dir_make): when setting the 'hidden' attribute also set the 'no index'
> attribute.
>
> Modified:
> subversion/trunk/subversion/libsvn_subr/io.c
>
> Modified: subversion/trunk/subversion/libsvn_subr/io.c
> URL: http://svn.apache.org/viewvc/subversion/trunk/subversion/libsvn_subr/io.c?rev=1068029&r1=1068028&r2=1068029&view=diff
> ==============================================================================
> --- subversion/trunk/subversion/libsvn_subr/io.c (original)
> +++ subversion/trunk/subversion/libsvn_subr/io.c Mon Feb 7 17:43:24 2011
> @@ -47,6 +47,10 @@
> #include <apr_portable.h>
> #include <apr_md5.h>
>
> +#ifdef WIN32
> +#include <arch/win32/apr_arch_file_io.h>
> +#endif
> +
> #include "svn_types.h"
> #include "svn_dirent_uri.h"
> #include "svn_path.h"
> @@ -1539,6 +1543,131 @@ io_set_file_perms(const char *path,
> }
> #endif /* !WIN32 && !__OS2__ */
>
> +#ifdef WIN32
> +#if APR_HAS_UNICODE_FS
> +/* copy of the apr function utf8_to_unicode_path since apr doesn't export this one */
> +apr_status_t svn_utf8_to_unicode_path(apr_wchar_t* retstr, apr_size_t retlen,
> + const char* srcstr)
> +{
> + /* TODO: The computations could preconvert the string to determine
> + * the true size of the retstr, but that's a memory over speed
> + * tradeoff that isn't appropriate this early in development.
> + *
> + * Allocate the maximum string length based on leading 4
> + * characters of \\?\ (allowing nearly unlimited path lengths)
> + * plus the trailing null, then transform /'s into \\'s since
> + * the \\?\ form doesn't allow '/' path seperators.
> + *
> + * Note that the \\?\ form only works for local drive paths, and
> + * \\?\UNC\ is needed UNC paths.
> + */
> + apr_size_t srcremains = strlen(srcstr) + 1;
> + apr_wchar_t *t = retstr;
> + apr_status_t rv;
> +
> + /* This is correct, we don't twist the filename if it is will
> + * definately be shorter than 248 characters. It merits some
> + * performance testing to see if this has any effect, but there
> + * seem to be applications that get confused by the resulting
> + * Unicode \\?\ style file names, especially if they use argv[0]
> + * or call the Win32 API functions such as GetModuleName, etc.
> + * Not every application is prepared to handle such names.
> + *
> + * Note also this is shorter than MAX_PATH, as directory paths
> + * are actually limited to 248 characters.
> + *
> + * Note that a utf-8 name can never result in more wide chars
> + * than the original number of utf-8 narrow chars.
> + */
> + if (srcremains > 248) {
> + if (srcstr[1] == ':' && (srcstr[2] == '/' || srcstr[2] == '\\')) {
> + wcscpy (retstr, L"\\\\?\\");
> + retlen -= 4;
> + t += 4;
> + }
> + else if ((srcstr[0] == '/' || srcstr[0] == '\\')
> + && (srcstr[1] == '/' || srcstr[1] == '\\')
> + && (srcstr[2] != '?')) {
> + /* Skip the slashes */
> + srcstr += 2;
> + srcremains -= 2;
> + wcscpy (retstr, L"\\\\?\\UNC\\");
> + retlen -= 8;
> + t += 8;
> + }
> + }
> +
> + if (rv = apr_conv_utf8_to_ucs2(srcstr, &srcremains, t, &retlen)) {
> + return (rv == APR_INCOMPLETE) ? APR_EINVAL : rv;
> + }
> + if (srcremains) {
> + return APR_ENAMETOOLONG;
> + }
> + for (; *t; ++t)
> + if (*t == L'/')
> + *t = L'\\';
> + return APR_SUCCESS;
> +}
> +#endif
> +
> +apr_status_t apr_win_file_attrs_set(const char *fname,
> + DWORD attributes,
> + DWORD attr_mask,
> + apr_pool_t *pool)
> +{
> + /* this is an implementation of apr_file_attrs_set() but one
> + that uses the proper Windows attributes instead of the apr
> + attributes. This way, we can apply any Windows file and
> + folder attributes even if apr doesn't implement them */
> + DWORD flags;
> + apr_status_t rv;
> +#if APR_HAS_UNICODE_FS
> + apr_wchar_t wfname[APR_PATH_MAX];
> +#endif
> +
> +#if APR_HAS_UNICODE_FS
> + IF_WIN_OS_IS_UNICODE
> + {
> + if (rv = svn_utf8_to_unicode_path(wfname,
> + sizeof(wfname) / sizeof(wfname[0]),
> + fname))
> + return rv;
> + flags = GetFileAttributesW(wfname);
> + }
> +#endif
> +#if APR_HAS_ANSI_FS
> + ELSE_WIN_OS_IS_ANSI
> + {
> + flags = GetFileAttributesA(fname);
> + }
> +#endif
> +
> + if (flags == 0xFFFFFFFF)
> + return apr_get_os_error();
> +
> + flags |= (attributes & attr_mask);
> + flags &= ~attr_mask;
> +
> +#if APR_HAS_UNICODE_FS
> + IF_WIN_OS_IS_UNICODE
> + {
> + rv = SetFileAttributesW(wfname, flags);
> + }
> +#endif
> +#if APR_HAS_ANSI_FS
> + ELSE_WIN_OS_IS_ANSI
> + {
> + rv = SetFileAttributesA(fname, flags);
> + }
> +#endif
> +
> + if (rv == 0)
> + return apr_get_os_error();
> +
> + return APR_SUCCESS;
> +}
> +
> +#endif
>
> svn_error_t *
> svn_io_set_file_read_write_carefully(const char *path,
> @@ -3197,10 +3326,24 @@ dir_make(const char *path, apr_fileperms
> #ifdef APR_FILE_ATTR_HIDDEN
> if (hidden)
> {
> +#ifndef WIN32
> status = apr_file_attrs_set(path_apr,
> APR_FILE_ATTR_HIDDEN,
> APR_FILE_ATTR_HIDDEN,
> pool);
> +#else
> + /* on Windows, use our wrapper so we can also set the
> + FILE_ATTRIBUTE_NOT_CONTENT_INDEXED attribute */
> + status = apr_win_file_attrs_set(path_apr,
> + FILE_ATTRIBUTE_HIDDEN |
> + FILE_ATTRIBUTE_NOT_CONTENT_INDEXED |
> + FILE_ATTRIBUTE_DIRECTORY,
> + FILE_ATTRIBUTE_HIDDEN |
> + FILE_ATTRIBUTE_NOT_CONTENT_INDEXED |
> + FILE_ATTRIBUTE_DIRECTORY,
> + pool);
> +
> +#endif
> if (status)
> return svn_error_wrap_apr(status, _("Can't hide directory '%s'"),
> svn_dirent_local_style(path, pool));
>
>
Received on 2011-02-08 04:03:44 CET

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