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BUG: Argument parsers do not always remove double quotes from around an argument that has no spaces.

This commit is contained in:
Brad King 2003-07-03 18:33:53 -04:00
parent f22a4a908d
commit 33566642a0
1 changed files with 110 additions and 68 deletions
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178
Source/kwsys/ProcessWin32.c
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@ -442,11 +442,12 @@ void kwsysProcess_SetCommand(kwsysProcess* cp, char const* const* command)
if(command)
{
/* We need to construct a single string representing the command
and its arguments. We will surround each argument with
double-quotes so it can contain spaces. We need to escape
double-quotes and all backslashes before them. We also need to
escape backslashes at the end of an argument because they come
before the closing double-quote for the argument. */
and its arguments. We will surround each argument containing
spaces with double-quotes. Inside a double-quoted argument, we
need to escape double-quotes and all backslashes before them.
We also need to escape backslashes at the end of an argument
because they come before the closing double-quote for the
argument. */
char* cmd;
char const* const* arg;
int length = 0;
@ -456,38 +457,56 @@ void kwsysProcess_SetCommand(kwsysProcess* cp, char const* const* command)
/* Keep track of how many backslashes have been encountered in a
row in this argument. */
int backslashes = 0;
int spaces = 0;
const char* c;
/* Add the length of the argument, plus 3 for the double quotes
and space separating the arguments. */
length += (int)strlen(*arg) + 3;
/* Scan the string to find characters that need escaping. */
/* Scan the string for spaces. If there are no spaces, we can
pass the argument verbatim. */
for(c=*arg; *c; ++c)
{
if(*c == '\\')
if(*c == ' ' || *c == '\t')
{
/* Found a backslash. It may need to be escaped later. */
++backslashes;
}
else if(*c == '"')
{
/* Found a double-quote. We need to escape it and all
immediately preceding backslashes. */
length += backslashes + 1;
backslashes = 0;
}
else
{
/* Found another character. This eliminates the possibility
that any immediately preceding backslashes will be
escaped. */
backslashes = 0;
spaces = 1;
break;
}
}
/* We need to escape all ending backslashes. */
length += backslashes;
/* Add the length of the argument, plus 1 for the space
separating the arguments. */
length += (int)strlen(*arg) + 1;
if(spaces)
{
/* Add 2 for double quotes since spaces are present. */
length += 2;
/* Scan the string to find characters that need escaping. */
for(c=*arg; *c; ++c)
{
if(*c == '\\')
{
/* Found a backslash. It may need to be escaped later. */
++backslashes;
}
else if(*c == '"')
{
/* Found a double-quote. We need to escape it and all
immediately preceding backslashes. */
length += backslashes + 1;
backslashes = 0;
}
else
{
/* Found another character. This eliminates the possibility
that any immediately preceding backslashes will be
escaped. */
backslashes = 0;
}
}
/* We need to escape all ending backslashes. */
length += backslashes;
}
}
/* Allocate enough space for the command. We do not need an extra
@ -502,65 +521,88 @@ void kwsysProcess_SetCommand(kwsysProcess* cp, char const* const* command)
/* Keep track of how many backslashes have been encountered in a
row in an argument. */
int backslashes = 0;
int spaces = 0;
const char* c;
/* Scan the string for spaces. If there are no spaces, we can
pass the argument verbatim. */
for(c=*arg; *c; ++c)
{
if(*c == ' ' || *c == '\t')
{
spaces = 1;
break;
}
}
/* Add the separating space if this is not the first argument. */
if(arg != command)
{
*cmd++ = ' ';
}
/* Add the opening double-quote for this argument. */
*cmd++ = '"';
/* Add the characters of the argument, possibly escaping them. */
for(c=*arg; *c; ++c)
if(spaces)
{
if(*c == '\\')
/* Add the opening double-quote for this argument. */
*cmd++ = '"';
/* Add the characters of the argument, possibly escaping them. */
for(c=*arg; *c; ++c)
{
/* Found a backslash. It may need to be escaped later. */
++backslashes;
*cmd++ = '\\';
}
else if(*c == '"')
{
/* Add enough backslashes to escape any that preceded the
double-quote. */
while(backslashes > 0)
if(*c == '\\')
{
--backslashes;
/* Found a backslash. It may need to be escaped later. */
++backslashes;
*cmd++ = '\\';
}
/* Add the backslash to escape the double-quote. */
*cmd++ = '\\';
/* Add the double-quote itself. */
*cmd++ = '"';
else if(*c == '"')
{
/* Add enough backslashes to escape any that preceded the
double-quote. */
while(backslashes > 0)
{
--backslashes;
*cmd++ = '\\';
}
/* Add the backslash to escape the double-quote. */
*cmd++ = '\\';
/* Add the double-quote itself. */
*cmd++ = '"';
}
else
{
/* We encountered a normal character. This eliminates any
escaping needed for preceding backslashes. Add the
character. */
backslashes = 0;
*cmd++ = *c;
}
}
else
/* Add enough backslashes to escape any trailing ones. */
while(backslashes > 0)
{
--backslashes;
*cmd++ = '\\';
}
/* Add the closing double-quote for this argument. */
*cmd++ = '"';
}
else
{
/* No spaces. Add the argument verbatim. */
for(c=*arg; *c; ++c)
{
/* We encountered a normal character. This eliminates any
escaping needed for preceding backslashes. Add the
character. */
backslashes = 0;
*cmd++ = *c;
}
}
/* Add enough backslashes to escape any trailing ones. */
while(backslashes > 0)
{
--backslashes;
*cmd++ = '\\';
}
/* Add the opening double-quote for this argument. */
*cmd++ = '"';
}
/* Add the terminating null character to the command line. */
*cmd++ = 0;
*cmd = 0;
}
}