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Simplify read_dirent's MSDOS hacks

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* dired.c (read_dirent): Simplify by removing the need for the
DIR_ENTRY argument.  All callers changed.  This separates the
MS-DOS idiosyncrasies better from the rest of the code.
This commit is contained in:
Paul Eggert 2015-01-30 23:11:55 -08:00
parent e0be229d5f
commit 512cdb9f2b
2 changed files with 15 additions and 13 deletions
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7
src/ChangeLog
View file

@ -1,3 +1,10 @@
2015-01-31 Paul Eggert <eggert@cs.ucla.edu>
Simplify read_dirent's MSDOS hacks
* dired.c (read_dirent): Simplify by removing the need for the
DIR_ENTRY argument. All callers changed. This separates the
MS-DOS idiosyncrasies better from the rest of the code.
2015-01-30 Eli Zaretskii <eliz@gnu.org>
* dired.c (read_dirent): Accept an additional argument

21
src/dired.c
View file

@ -124,11 +124,10 @@ directory_files_internal_unwind (void *dh)
/* Return the next directory entry from DIR; DIR's name is DIRNAME.
If there are no more directory entries, return a null pointer.
Signal any unrecoverable errors. FIRST_ENTRY true means this is
the first call after open_directory. */
Signal any unrecoverable errors. */
static struct dirent *
read_dirent (DIR *dir, Lisp_Object dirname, bool first_entry)
read_dirent (DIR *dir, Lisp_Object dirname)
{
while (true)
{
@ -138,14 +137,15 @@ read_dirent (DIR *dir, Lisp_Object dirname, bool first_entry)
return dp;
if (! (errno == EAGAIN || errno == EINTR))
{
#ifdef MSDOS
/* The MS-Windows implementation of 'opendir' doesn't
actually open a directory until the first call to
'readdir'. If 'readdir' fails to open the directory, it
sets errno to ENOENT or EACCES, see w32.c. */
if (first_entry && (errno == ENOENT || errno == EACCES))
if (errno == ENOENT || errno == EACCES)
report_file_error ("Opening directory", dirname);
else
report_file_error ("Reading directory", dirname);
#endif
report_file_error ("Reading directory", dirname);
}
QUIT;
}
@ -249,8 +249,7 @@ directory_files_internal (Lisp_Object directory, Lisp_Object full,
needsep = 1;
/* Loop reading directory entries. */
bool first_entry = true;
for (struct dirent *dp; (dp = read_dirent (d, directory, first_entry)); )
for (struct dirent *dp; (dp = read_dirent (d, directory)); )
{
ptrdiff_t len = dirent_namelen (dp);
Lisp_Object name = make_unibyte_string (dp->d_name, len);
@ -258,8 +257,6 @@ directory_files_internal (Lisp_Object directory, Lisp_Object full,
struct gcpro gcpro1, gcpro2;
GCPRO2 (finalname, name);
first_entry = false;
/* Note: DECODE_FILE can GC; it should protect its argument,
though. */
name = DECODE_FILE (name);
@ -499,13 +496,11 @@ file_name_completion (Lisp_Object file, Lisp_Object dirname, bool all_flag,
record_unwind_protect_ptr (directory_files_internal_unwind, d);
/* Loop reading directory entries. */
bool first_entry = true;
for (struct dirent *dp; (dp = read_dirent (d, dirname, first_entry)); )
for (struct dirent *dp; (dp = read_dirent (d, dirname)); )
{
ptrdiff_t len = dirent_namelen (dp);
bool canexclude = 0;
first_entry = false;
QUIT;
if (len < SCHARS (encoded_file)
|| (scmp (dp->d_name, SSDATA (encoded_file),