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cccp.c (DIR_SEPARATOR): Move to the top of the file.

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* cccp.c (DIR_SEPARATOR): Move to the top of the file.
        (is_dir_separator): New function.
        (simplify_filename): Use it.
Last bit of the dir separator patches.

From-SVN: r26331
This commit is contained in:
Mark Elbrecht 1999-04-10 05:07:32 +00:00 committed by Jeff Law
parent 9ee9f4f066
commit e6cfbc9e44
2 changed files with 77 additions and 44 deletions
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3
gcc/ChangeLog
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@ -13,6 +13,9 @@ Sat Apr 10 05:14:50 1999 Mark Elbrecht <snowball3@usa.net>
* i386/djgpp.h (SET_ASM_OP): Define.
* cccp.c (DIR_SEPARATOR): Move to the top of the file.
(is_dir_separator): New function.
(simplify_filename): Use it.
* collect2.c (find_a_file): Use HAVE_DOS_BASED_FILE_SYSTEM in place
of the DIR_SEPARATOR test.
Consider any file starting with a drivename to be absolute.

118
gcc/cccp.c
View File

@ -51,6 +51,11 @@ typedef unsigned char U_CHAR;
# define PATH_SEPARATOR ':'
#endif
/* By default, a slash separates directory names. */
#ifndef DIR_SEPARATOR
# define DIR_SEPARATOR '/'
#endif
/* By default, the suffix for object files is ".o". */
#ifdef OBJECT_SUFFIX
# define HAVE_OBJECT_SUFFIX
@ -4782,6 +4787,20 @@ absolute_filename (filename)
return 0;
}
/* Returns whether or not a given character is a directory separator.
Used by simplify_filename. */
static inline
int
is_dir_separator(ch)
char ch;
{
return (ch == DIR_SEPARATOR)
#if defined (DIR_SEPARATOR_2)
|| (ch == DIR_SEPARATOR_2)
#endif
;
}
/* Remove unnecessary characters from FILENAME in place,
to avoid unnecessary filename aliasing.
Return the length of the resulting string.
@ -4799,55 +4818,70 @@ simplify_filename (filename)
char *to0;
/* Remove redundant initial /s. */
if (*from == '/') {
*to++ = '/';
if (*++from == '/') {
if (*++from == '/') {
/* 3 or more initial /s are equivalent to 1 /. */
while (*++from == '/')
continue;
} else {
/* On some hosts // differs from /; Posix allows this. */
static int slashslash_vs_slash;
if (slashslash_vs_slash == 0) {
struct stat s1, s2;
slashslash_vs_slash = ((stat ("/", &s1) == 0 && stat ("//", &s2) == 0
&& INO_T_EQ (s1.st_ino, s2.st_ino)
&& s1.st_dev == s2.st_dev)
? 1 : -1);
}
if (slashslash_vs_slash < 0)
*to++ = '/';
}
if (is_dir_separator (*from))
{
*to++ = DIR_SEPARATOR;
if (is_dir_separator (*++from))
{
if (is_dir_separator (*++from))
{
/* 3 or more initial /s are equivalent to 1 /. */
while (is_dir_separator (*++from))
continue;
}
else
{
/* On some hosts // differs from /; Posix allows this. */
static int slashslash_vs_slash;
if (slashslash_vs_slash == 0)
{
struct stat s1, s2;
slashslash_vs_slash = ((stat ("/", &s1) == 0
&& stat ("//", &s2) == 0
&& INO_T_EQ (s1.st_ino, s2.st_ino)
&& s1.st_dev == s2.st_dev)
? 1 : -1);
}
if (slashslash_vs_slash < 0)
*to++ = DIR_SEPARATOR;
}
}
}
}
to0 = to;
for (;;) {
for (;;)
{
#ifndef VMS
if (from[0] == '.' && from[1] == '/')
from += 2;
else
if (from[0] == '.' && from[1] == '/')
from += 2;
else
#endif
{
/* Copy this component and trailing /, if any. */
while ((*to++ = *from++) != '/') {
if (!to[-1]) {
/* Trim . component at end of nonempty name. */
to -= filename <= to - 3 && to[-3] == '/' && to[-2] == '.';
{
/* Copy this component and trailing DIR_SEPARATOR, if any. */
while (!is_dir_separator (*to++ = *from++))
{
if (!to[-1])
{
/* Trim . component at end of nonempty name. */
to -= filename <= to - 3 && to[-3] == DIR_SEPARATOR && to[-2] == '.';
/* Trim unnecessary trailing /s. */
while (to0 < --to && to[-1] == '/')
continue;
/* Trim unnecessary trailing /s. */
while (to0 < --to && to[-1] == DIR_SEPARATOR)
continue;
*to = 0;
return to - filename;
}
}
}
*to = 0;
return to - filename;
}
}
#if defined(DIR_SEPARATOR_2)
/* Simplify to one directory separator. */
to[-1] = DIR_SEPARATOR;
#endif
}
/* Skip /s after a /. */
while (*from == '/')
while (is_dir_separator (*from))
from++;
}
}
@ -10322,10 +10356,6 @@ make_assertion (option, str)
--indepth;
}
#ifndef DIR_SEPARATOR
#define DIR_SEPARATOR '/'
#endif
/* The previous include prefix, if any, is PREV_FILE_NAME.
Translate any pathnames with COMPONENT.
Allocate a new include prefix whose name is the