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* Makefile.in (DLL_OFILES): Add winf.o.

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* spawn.cc: Move command line handling stuff into winf.cc.
* winf.h: New file.
* winf.cc: New file.
This commit is contained in:
Christopher Faylor
2006-04-12 15:53:22 +00:00
parent be5542f716
commit 329a39ebea
6 changed files with 244 additions and 193 deletions
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196
winsup/cygwin/spawn.cc
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@ -33,9 +33,7 @@ details. */
#include "registry.h"
#include "environ.h"
#include "cygtls.h"
#define LINE_BUF_CHUNK (CYG_MAX_PATH * 2)
#define MAXWINCMDLEN 32767
#include "winf.h"
static suffix_info exe_suffixes[] =
{
@ -239,138 +237,6 @@ iscmd (const char *argv0, const char *what)
(n == 0 || isdirsep (argv0[n - 1]));
}
class linebuf
{
public:
size_t ix;
char *buf;
size_t alloced;
linebuf () : ix (0), buf (NULL), alloced (0) {}
~linebuf () {if (buf) free (buf);}
void add (const char *what, int len) __attribute__ ((regparm (3)));
void add (const char *what) {add (what, strlen (what));}
void prepend (const char *what, int len);
void finish () __attribute__ ((regparm (1)));
};
void
linebuf::finish ()
{
if (!ix)
add ("", 1);
else
buf[--ix] = '\0';
}
void
linebuf::add (const char *what, int len)
{
size_t newix = ix + len;
if (newix >= alloced || !buf)
{
alloced += LINE_BUF_CHUNK + newix;
buf = (char *) realloc (buf, alloced + 1);
}
memcpy (buf + ix, what, len);
ix = newix;
buf[ix] = '\0';
}
void
linebuf::prepend (const char *what, int len)
{
int buflen;
size_t newix;
if ((newix = ix + len) >= alloced)
{
alloced += LINE_BUF_CHUNK + newix;
buf = (char *) realloc (buf, alloced + 1);
buf[ix] = '\0';
}
if ((buflen = strlen (buf)))
memmove (buf + len, buf, buflen + 1);
else
buf[newix] = '\0';
memcpy (buf, what, len);
ix = newix;
}
class av
{
char **argv;
int calloced;
public:
int argc;
bool win16_exe;
bool iscui;
av (): argv (NULL), iscui (false) {}
av (int ac_in, const char * const *av_in) : calloced (0), argc (ac_in), win16_exe (false), iscui (false)
{
argv = (char **) cmalloc (HEAP_1_ARGV, (argc + 5) * sizeof (char *));
memcpy (argv, av_in, (argc + 1) * sizeof (char *));
}
void *operator new (size_t, void *p) __attribute__ ((nothrow)) {return p;}
void set (int ac_in, const char * const *av_in) {new (this) av (ac_in, av_in);}
~av ()
{
if (argv)
{
for (int i = 0; i < calloced; i++)
if (argv[i])
cfree (argv[i]);
cfree (argv);
}
}
int unshift (const char *what, int conv = 0);
operator char **() {return argv;}
void all_calloced () {calloced = argc;}
void replace0_maybe (const char *arg0)
{
/* Note: Assumes that argv array has not yet been "unshifted" */
if (!calloced)
{
argv[0] = cstrdup1 (arg0);
calloced = true;
}
}
void dup_maybe (int i)
{
if (i >= calloced)
argv[i] = cstrdup1 (argv[i]);
}
void dup_all ()
{
for (int i = calloced; i < argc; i++)
argv[i] = cstrdup1 (argv[i]);
}
int fixup (const char *, path_conv&, const char *);
};
int
av::unshift (const char *what, int conv)
{
char **av;
av = (char **) crealloc (argv, (argc + 2) * sizeof (char *));
if (!av)
return 0;
argv = av;
memmove (argv + 1, argv, (argc + 1) * sizeof (char *));
char buf[CYG_MAX_PATH];
if (conv)
{
cygwin_conv_to_posix_path (what, buf);
char *p = strchr (buf, '\0') - 4;
if (p > buf && strcasematch (p, ".exe"))
*p = '\0';
what = buf;
}
*argv = cstrdup1 (what);
calloced++;
argc++;
return 1;
}
struct pthread_cleanup
{
_sig_func_ptr oldint;
@ -507,65 +373,13 @@ spawn_guts (const char * prog_arg, const char *const *argv,
{
if (real_path.iscygexec ())
newargv.dup_all ();
else
else if (!one_line.fromargv (newargv, real_path))
{
for (int i = 0; i < newargv.argc; i++)
{
char *p = NULL;
const char *a;
newargv.dup_maybe (i);
a = i ? newargv[i] : (char *) real_path;
int len = strlen (a);
if (len != 0 && !strpbrk (a, " \t\n\r\""))
one_line.add (a, len);
else
{
one_line.add ("\"", 1);
/* Handle embedded special characters " and \.
A " is always preceded by a \.
A \ is not special unless it precedes a ". If it does,
then all preceding \'s must be doubled to avoid having
the Windows command line parser interpret the \ as quoting
the ". This rule applies to a string of \'s before the end
of the string, since cygwin/windows uses a " to delimit the
argument. */
for (; (p = strpbrk (a, "\"\\")); a = ++p)
{
one_line.add (a, p - a);
/* Find length of string of backslashes */
int n = strspn (p, "\\");
if (!n)
one_line.add ("\\\"", 2); /* No backslashes, so it must be a ".
The " has to be protected with a backslash. */
else
{
one_line.add (p, n); /* Add the run of backslashes */
/* Need to double up all of the preceding
backslashes if they precede a quote or EOS. */
if (!p[n] || p[n] == '"')
one_line.add (p, n);
p += n - 1; /* Point to last backslash */
}
}
if (*a)
one_line.add (a);
one_line.add ("\"", 1);
}
one_line.add (" ", 1);
}
one_line.finish ();
if (one_line.ix >= MAXWINCMDLEN)
{
debug_printf ("command line too long (>32K), return E2BIG");
set_errno (E2BIG);
res = -1;
goto out;
}
res = -1;
goto out;
}
newargv.all_calloced ();
moreinfo->argc = newargv.argc;
moreinfo->argv = newargv;