539 lines
15 KiB
C
539 lines
15 KiB
C
/*=========================================================================
|
|
|
|
Program: KWSys - Kitware System Library
|
|
Module: $RCSfile$
|
|
|
|
Copyright (c) Kitware, Inc., Insight Consortium. All rights reserved.
|
|
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
|
|
|
|
This software is distributed WITHOUT ANY WARRANTY; without even
|
|
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
PURPOSE. See the above copyright notices for more information.
|
|
|
|
=========================================================================*/
|
|
#include "kwsysPrivate.h"
|
|
#include KWSYS_HEADER(System.h)
|
|
|
|
/* Work-around CMake dependency scanning limitation. This must
|
|
duplicate the above list of headers. */
|
|
#if 0
|
|
# include "System.h.in"
|
|
#endif
|
|
|
|
#include <string.h> /* strlen */
|
|
#include <ctype.h> /* isalpha */
|
|
|
|
#include <stdio.h>
|
|
|
|
/*
|
|
|
|
Notes:
|
|
|
|
Make variable replacements open a can of worms. Sometimes they should
|
|
be quoted and sometimes not. Sometimes their replacement values are
|
|
already quoted.
|
|
|
|
VS variables cause problems. In order to pass the referenced value
|
|
with spaces the reference must be quoted. If the variable value ends
|
|
in a backslash then it will escape the ending quote! In order to make
|
|
the ending backslash appear we need this:
|
|
|
|
"$(InputDir)\"
|
|
|
|
However if there is not a trailing backslash then this will put a
|
|
quote in the value so we need:
|
|
|
|
"$(InputDir)"
|
|
|
|
Make variable references are platform specific so we should probably
|
|
just NOT quote them and let the listfile author deal with it.
|
|
|
|
*/
|
|
|
|
/*
|
|
TODO: For windows echo:
|
|
|
|
To display a pipe (|) or redirection character (< or >) when using the
|
|
echo command, use a caret character immediately before the pipe or
|
|
redirection character (for example, ^>, ^<, or ^| ). If you need to
|
|
use the caret character itself (^), use two in a row (^^).
|
|
*/
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
static int kwsysSystem_Shell__CharIsWhitespace(char c)
|
|
{
|
|
return ((c == ' ') || (c == '\t'));
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
static int kwsysSystem_Shell__CharNeedsQuotesOnUnix(char c)
|
|
{
|
|
return ((c == '\'') || (c == '`') || (c == ';') || (c == '#') ||
|
|
(c == '&') || (c == '$') || (c == '(') || (c == ')') ||
|
|
(c == '~') || (c == '<') || (c == '>') || (c == '|') ||
|
|
(c == '*') || (c == '^') || (c == '\\'));
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
static int kwsysSystem_Shell__CharNeedsQuotes(char c, int isUnix, int flags)
|
|
{
|
|
/* On Windows the built-in command shell echo never needs quotes. */
|
|
if(!isUnix && (flags & kwsysSystem_Shell_Flag_EchoWindows))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* On all platforms quotes are needed to preserve whitespace. */
|
|
if(kwsysSystem_Shell__CharIsWhitespace(c))
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
if(isUnix)
|
|
{
|
|
/* On UNIX several special characters need quotes to preserve them. */
|
|
if(kwsysSystem_Shell__CharNeedsQuotesOnUnix(c))
|
|
{
|
|
return 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* On Windows single-quotes must be escaped in some make
|
|
environments, such as in mingw32-make. */
|
|
if(flags & kwsysSystem_Shell_Flag_Make)
|
|
{
|
|
if(c == '\'')
|
|
{
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
static int kwsysSystem_Shell__CharIsMakeVariableName(char c)
|
|
{
|
|
return c && (c == '_' || isalpha(((int)c)));
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
static const char* kwsysSystem_Shell__SkipMakeVariables(const char* c)
|
|
{
|
|
while(*c == '$' && *(c+1) == '(')
|
|
{
|
|
const char* skip = c+2;
|
|
while(kwsysSystem_Shell__CharIsMakeVariableName(*skip))
|
|
{
|
|
++skip;
|
|
}
|
|
if(*skip == ')')
|
|
{
|
|
c = skip+1;
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
return c;
|
|
}
|
|
|
|
/*
|
|
Allowing make variable replacements opens a can of worms. Sometimes
|
|
they should be quoted and sometimes not. Sometimes their replacement
|
|
values are already quoted or contain escapes.
|
|
|
|
Some Visual Studio variables cause problems. In order to pass the
|
|
referenced value with spaces the reference must be quoted. If the
|
|
variable value ends in a backslash then it will escape the ending
|
|
quote! In order to make the ending backslash appear we need this:
|
|
|
|
"$(InputDir)\"
|
|
|
|
However if there is not a trailing backslash then this will put a
|
|
quote in the value so we need:
|
|
|
|
"$(InputDir)"
|
|
|
|
This macro decides whether we quote an argument just because it
|
|
contains a make variable reference. This should be replaced with a
|
|
flag later when we understand applications of this better.
|
|
*/
|
|
#define KWSYS_SYSTEM_SHELL_QUOTE_MAKE_VARIABLES 0
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
static int kwsysSystem_Shell__ArgumentNeedsQuotes(const char* in, int isUnix,
|
|
int flags)
|
|
{
|
|
/* Scan the string for characters that require quoting. */
|
|
{
|
|
const char* c;
|
|
for(c=in; *c; ++c)
|
|
{
|
|
/* Look for $(MAKEVAR) syntax if requested. */
|
|
if(flags & kwsysSystem_Shell_Flag_AllowMakeVariables)
|
|
{
|
|
#if KWSYS_SYSTEM_SHELL_QUOTE_MAKE_VARIABLES
|
|
const char* skip = kwsysSystem_Shell__SkipMakeVariables(c);
|
|
if(skip != c)
|
|
{
|
|
/* We need to quote make variable references to preserve the
|
|
string with contents substituted in its place. */
|
|
return 1;
|
|
}
|
|
#else
|
|
/* Skip over the make variable references if any are present. */
|
|
c = kwsysSystem_Shell__SkipMakeVariables(c);
|
|
|
|
/* Stop if we have reached the end of the string. */
|
|
if(!*c)
|
|
{
|
|
break;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* Check whether this character needs quotes. */
|
|
if(kwsysSystem_Shell__CharNeedsQuotes(*c, isUnix, flags))
|
|
{
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* On Windows some single character arguments need quotes. */
|
|
if(!isUnix && *in && !*(in+1))
|
|
{
|
|
char c = *in;
|
|
if((c == '?') || (c == '&') || (c == '^') || (c == '|') || (c == '#'))
|
|
{
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
static int kwsysSystem_Shell__GetArgumentSize(const char* in,
|
|
int isUnix, int flags)
|
|
{
|
|
/* Start with the length of the original argument, plus one for
|
|
either a terminating null or a separating space. */
|
|
int size = (int)strlen(in) + 1;
|
|
|
|
/* String iterator. */
|
|
const char* c;
|
|
|
|
/* Keep track of how many backslashes have been encountered in a row. */
|
|
int windows_backslashes = 0;
|
|
|
|
/* Scan the string for characters that require escaping or quoting. */
|
|
for(c=in; *c; ++c)
|
|
{
|
|
/* Look for $(MAKEVAR) syntax if requested. */
|
|
if(flags & kwsysSystem_Shell_Flag_AllowMakeVariables)
|
|
{
|
|
/* Skip over the make variable references if any are present. */
|
|
c = kwsysSystem_Shell__SkipMakeVariables(c);
|
|
|
|
/* Stop if we have reached the end of the string. */
|
|
if(!*c)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Check whether this character needs escaping for the shell. */
|
|
if(isUnix)
|
|
{
|
|
/* On Unix a few special characters need escaping even inside a
|
|
quoted argument. */
|
|
if(*c == '\\' || *c == '"' || *c == '`' || *c == '$')
|
|
{
|
|
/* This character needs a backslash to escape it. */
|
|
++size;
|
|
}
|
|
}
|
|
else if(flags & kwsysSystem_Shell_Flag_EchoWindows)
|
|
{
|
|
/* On Windows the built-in command shell echo never needs escaping. */
|
|
}
|
|
else
|
|
{
|
|
/* On Windows only backslashes and double-quotes need escaping. */
|
|
if(*c == '\\')
|
|
{
|
|
/* Found a backslash. It may need to be escaped later. */
|
|
++windows_backslashes;
|
|
}
|
|
else if(*c == '"')
|
|
{
|
|
/* Found a double-quote. We need to escape it and all
|
|
immediately preceding backslashes. */
|
|
size += windows_backslashes + 1;
|
|
windows_backslashes = 0;
|
|
}
|
|
else
|
|
{
|
|
/* Found another character. This eliminates the possibility
|
|
that any immediately preceding backslashes will be
|
|
escaped. */
|
|
windows_backslashes = 0;
|
|
}
|
|
}
|
|
|
|
/* Check whether this character needs escaping for a make tool. */
|
|
if(*c == '$')
|
|
{
|
|
if(flags & kwsysSystem_Shell_Flag_Make)
|
|
{
|
|
/* In Makefiles a dollar is written $$ so we need one extra
|
|
character. */
|
|
++size;
|
|
}
|
|
else if(flags & kwsysSystem_Shell_Flag_VSIDE)
|
|
{
|
|
/* In a VS IDE a dollar is written "$" so we need two extra
|
|
characters. */
|
|
size += 2;
|
|
}
|
|
}
|
|
else if(*c == '#')
|
|
{
|
|
if((flags & kwsysSystem_Shell_Flag_Make) &&
|
|
(flags & kwsysSystem_Shell_Flag_WatcomWMake))
|
|
{
|
|
/* In Watcom WMake makefiles a pound is written $# so we need
|
|
one extra character. */
|
|
++size;
|
|
}
|
|
}
|
|
else if(*c == '%')
|
|
{
|
|
if((flags & kwsysSystem_Shell_Flag_VSIDE) ||
|
|
((flags & kwsysSystem_Shell_Flag_Make) &&
|
|
(flags & kwsysSystem_Shell_Flag_MinGWMake)))
|
|
{
|
|
/* In the VS IDE or MinGW make a percent is written %% so we
|
|
need one extra characters. */
|
|
size += 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Check whether the argument needs surrounding quotes. */
|
|
if(kwsysSystem_Shell__ArgumentNeedsQuotes(in, isUnix, flags))
|
|
{
|
|
/* Surrounding quotes are needed. Allocate space for them. */
|
|
size += 2;
|
|
|
|
/* We must escape all ending backslashes when quoting on windows. */
|
|
size += windows_backslashes;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
static char* kwsysSystem_Shell__GetArgument(const char* in, char* out,
|
|
int isUnix, int flags)
|
|
{
|
|
/* String iterator. */
|
|
const char* c;
|
|
|
|
/* Keep track of how many backslashes have been encountered in a row. */
|
|
int windows_backslashes = 0;
|
|
|
|
/* Whether the argument must be quoted. */
|
|
int needQuotes = kwsysSystem_Shell__ArgumentNeedsQuotes(in, isUnix, flags);
|
|
if(needQuotes)
|
|
{
|
|
/* Add the opening quote for this argument. */
|
|
*out++ = '"';
|
|
}
|
|
|
|
/* Scan the string for characters that require escaping or quoting. */
|
|
for(c=in; *c; ++c)
|
|
{
|
|
/* Look for $(MAKEVAR) syntax if requested. */
|
|
if(flags & kwsysSystem_Shell_Flag_AllowMakeVariables)
|
|
{
|
|
const char* skip = kwsysSystem_Shell__SkipMakeVariables(c);
|
|
if(skip != c)
|
|
{
|
|
/* Copy to the end of the make variable references. */
|
|
while(c != skip)
|
|
{
|
|
*out++ = *c++;
|
|
}
|
|
|
|
/* Stop if we have reached the end of the string. */
|
|
if(!*c)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Check whether this character needs escaping for the shell. */
|
|
if(isUnix)
|
|
{
|
|
/* On Unix a few special characters need escaping even inside a
|
|
quoted argument. */
|
|
if(*c == '\\' || *c == '"' || *c == '`' || *c == '$')
|
|
{
|
|
/* This character needs a backslash to escape it. */
|
|
*out++ = '\\';
|
|
}
|
|
}
|
|
else if(flags & kwsysSystem_Shell_Flag_EchoWindows)
|
|
{
|
|
/* On Windows the built-in command shell echo never needs escaping. */
|
|
}
|
|
else
|
|
{
|
|
/* On Windows only backslashes and double-quotes need escaping. */
|
|
if(*c == '\\')
|
|
{
|
|
/* Found a backslash. It may need to be escaped later. */
|
|
++windows_backslashes;
|
|
}
|
|
else if(*c == '"')
|
|
{
|
|
/* Found a double-quote. Escape all immediately preceding
|
|
backslashes. */
|
|
while(windows_backslashes > 0)
|
|
{
|
|
--windows_backslashes;
|
|
*out++ = '\\';
|
|
}
|
|
|
|
/* Add the backslash to escape the double-quote. */
|
|
*out++ = '\\';
|
|
}
|
|
else
|
|
{
|
|
/* We encountered a normal character. This eliminates any
|
|
escaping needed for preceding backslashes. */
|
|
windows_backslashes = 0;
|
|
}
|
|
}
|
|
|
|
/* Check whether this character needs escaping for a make tool. */
|
|
if(*c == '$')
|
|
{
|
|
if(flags & kwsysSystem_Shell_Flag_Make)
|
|
{
|
|
/* In Makefiles a dollar is written $$. The make tool will
|
|
replace it with just $ before passing it to the shell. */
|
|
*out++ = '$';
|
|
*out++ = '$';
|
|
}
|
|
else if(flags & kwsysSystem_Shell_Flag_VSIDE)
|
|
{
|
|
/* In a VS IDE a dollar is written "$". If this is written in
|
|
an un-quoted argument it starts a quoted segment, inserts
|
|
the $ and ends the segment. If it is written in a quoted
|
|
argument it ends quoting, inserts the $ and restarts
|
|
quoting. Either way the $ is isolated from surrounding
|
|
text to avoid looking like a variable reference. */
|
|
*out++ = '"';
|
|
*out++ = '$';
|
|
*out++ = '"';
|
|
}
|
|
else
|
|
{
|
|
/* Otherwise a dollar is written just $. */
|
|
*out++ = '$';
|
|
}
|
|
}
|
|
else if(*c == '#')
|
|
{
|
|
if((flags & kwsysSystem_Shell_Flag_Make) &&
|
|
(flags & kwsysSystem_Shell_Flag_WatcomWMake))
|
|
{
|
|
/* In Watcom WMake makefiles a pound is written $#. The make
|
|
tool will replace it with just # before passing it to the
|
|
shell. */
|
|
*out++ = '$';
|
|
*out++ = '#';
|
|
}
|
|
else
|
|
{
|
|
/* Otherwise a pound is written just #. */
|
|
*out++ = '#';
|
|
}
|
|
}
|
|
else if(*c == '%')
|
|
{
|
|
if((flags & kwsysSystem_Shell_Flag_VSIDE) ||
|
|
((flags & kwsysSystem_Shell_Flag_Make) &&
|
|
(flags & kwsysSystem_Shell_Flag_MinGWMake)))
|
|
{
|
|
/* In the VS IDE or MinGW make a percent is written %%. */
|
|
*out++ = '%';
|
|
*out++ = '%';
|
|
}
|
|
else
|
|
{
|
|
/* Otherwise a percent is written just %. */
|
|
*out++ = '%';
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Store this character. */
|
|
*out++ = *c;
|
|
}
|
|
}
|
|
|
|
if(needQuotes)
|
|
{
|
|
/* Add enough backslashes to escape any trailing ones. */
|
|
while(windows_backslashes > 0)
|
|
{
|
|
--windows_backslashes;
|
|
*out++ = '\\';
|
|
}
|
|
|
|
/* Add the closing quote for this argument. */
|
|
*out++ = '"';
|
|
}
|
|
|
|
/* Store a terminating null without incrementing. */
|
|
*out = 0;
|
|
|
|
return out;
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
char* kwsysSystem_Shell_GetArgumentForWindows(const char* in,
|
|
char* out,
|
|
int flags)
|
|
{
|
|
return kwsysSystem_Shell__GetArgument(in, out, 0, flags);
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
char* kwsysSystem_Shell_GetArgumentForUnix(const char* in,
|
|
char* out,
|
|
int flags)
|
|
{
|
|
return kwsysSystem_Shell__GetArgument(in, out, 1, flags);
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
int kwsysSystem_Shell_GetArgumentSizeForWindows(const char* in, int flags)
|
|
{
|
|
return kwsysSystem_Shell__GetArgumentSize(in, 0, flags);
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
int kwsysSystem_Shell_GetArgumentSizeForUnix(const char* in, int flags)
|
|
{
|
|
return kwsysSystem_Shell__GetArgumentSize(in, 1, flags);
|
|
}
|