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authorKai Tietz <ktietz70@googlemail.com>2014-06-01 22:11:56 +0200
committerKai Tietz <ktietz70@googlemail.com>2014-06-01 22:11:56 +0200
commitf69123aac56b383081bdb8eb3909087809927557 (patch)
treead6b8f31e695337e5ea515d12d2f6f30b05c496d /libiberty
parentc72b2e7b2fbadd94f67a922e1a7f9d834dd45d38 (diff)
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2014-06-01 Ray Donnelly <mingw.android@gmail.com>
* pex-win32.c (argv_to_cmdline): Don't quote args unnecessarily.
Diffstat (limited to 'libiberty')
-rw-r--r--libiberty/ChangeLog5
-rw-r--r--libiberty/pex-win32.c46
2 files changed, 42 insertions, 9 deletions
diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index 16eb6f7..8390e4c 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,8 @@
+2014-06-01 Ray Donnelly <mingw.android@gmail.com>
+
+ * pex-win32.c (argv_to_cmdline): Don't quote
+ args unnecessarily
+
2014-05-28 Pedro Alves <palves@redhat.com>
* cp-demangle.c (d_dump): Handle DEMANGLE_COMPONENT_FUNCTION_PARAM
diff --git a/libiberty/pex-win32.c b/libiberty/pex-win32.c
index eae72c5..8b9d4f0 100644
--- a/libiberty/pex-win32.c
+++ b/libiberty/pex-win32.c
@@ -340,17 +340,25 @@ argv_to_cmdline (char *const *argv)
char *p;
size_t cmdline_len;
int i, j, k;
+ int needs_quotes;
cmdline_len = 0;
for (i = 0; argv[i]; i++)
{
- /* We quote every last argument. This simplifies the problem;
- we need only escape embedded double-quotes and immediately
+ /* We only quote arguments that contain spaces, \t or " characters to
+ prevent wasting 2 chars per argument of the CreateProcess 32k char
+ limit. We need only escape embedded double-quotes and immediately
preceeding backslash characters. A sequence of backslach characters
that is not follwed by a double quote character will not be
escaped. */
+ needs_quotes = 0;
for (j = 0; argv[i][j]; j++)
{
+ if (argv[i][j] == ' ' || argv[i][j] == '\t' || argv[i][j] == '"')
+ {
+ needs_quotes = 1;
+ }
+
if (argv[i][j] == '"')
{
/* Escape preceeding backslashes. */
@@ -362,16 +370,33 @@ argv_to_cmdline (char *const *argv)
}
/* Trailing backslashes also need to be escaped because they will be
followed by the terminating quote. */
- for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--)
- cmdline_len++;
+ if (needs_quotes)
+ {
+ for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--)
+ cmdline_len++;
+ }
cmdline_len += j;
- cmdline_len += 3; /* for leading and trailing quotes and space */
+ /* for leading and trailing quotes and space */
+ cmdline_len += needs_quotes * 2 + 1;
}
cmdline = XNEWVEC (char, cmdline_len);
p = cmdline;
for (i = 0; argv[i]; i++)
{
- *p++ = '"';
+ needs_quotes = 0;
+ for (j = 0; argv[i][j]; j++)
+ {
+ if (argv[i][j] == ' ' || argv[i][j] == '\t' || argv[i][j] == '"')
+ {
+ needs_quotes = 1;
+ break;
+ }
+ }
+
+ if (needs_quotes)
+ {
+ *p++ = '"';
+ }
for (j = 0; argv[i][j]; j++)
{
if (argv[i][j] == '"')
@@ -382,9 +407,12 @@ argv_to_cmdline (char *const *argv)
}
*p++ = argv[i][j];
}
- for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--)
- *p++ = '\\';
- *p++ = '"';
+ if (needs_quotes)
+ {
+ for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--)
+ *p++ = '\\';
+ *p++ = '"';
+ }
*p++ = ' ';
}
p[-1] = '\0';