1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile: cmSetCommand.cxx,v $
Language: C++
Date: $Date: 2006/10/13 14:52:06 $
Version: $Revision: 1.29.2.1 $
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html 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 "cmSetCommand.h"
// cmSetCommand
bool cmSetCommand::InitialPass(std::vector<std::string> const& args)
{
if(args.size() < 1 )
{
this->SetError("called with incorrect number of arguments");
return false;
}
// watch for ENV signatures
const char* variable = args[0].c_str(); // VAR is always first
if (!strncmp(variable,"ENV{",4) && strlen(variable) > 5)
{
// what is the variable name
char *varName = new char [strlen(variable)];
strncpy(varName,variable+4,strlen(variable)-5);
varName[strlen(variable)-5] = '\0';
std::string putEnvArg = varName;
putEnvArg += "=";
// what is the current value if any
const char *currValue = getenv(varName);
delete [] varName;
// will it be set to something, then set it
if (args.size() > 1 && args[1].size())
{
// but only if it is different from current value
if (!currValue || strcmp(currValue,args[1].c_str()))
{
putEnvArg += args[1];
cmSystemTools::PutEnv(putEnvArg.c_str());
}
return true;
}
// if it will be cleared, then clear it if it isn;t already clear
if (currValue)
{
cmSystemTools::PutEnv(putEnvArg.c_str());
}
return true;
}
// SET (VAR) // Removes the definition of VAR.
if (args.size() == 1)
{
this->Makefile->RemoveDefinition(args[0].c_str());
return true;
}
// here are the remaining options
// SET (VAR value )
// SET (VAR CACHE TYPE "doc String" [FORCE])
// SET (VAR value CACHE TYPE "doc string" [FORCE])
std::string value; // optional
bool cache = false; // optional
bool force = false; // optional
cmCacheManager::CacheEntryType type
= cmCacheManager::STRING; // required if cache
const char* docstring = 0; // required if cache
std::string::size_type cacheStart = 0;
// look for FORCE argument
if (args.size() > 4 && args[args.size()-1] == "FORCE")
{
force = true;
}
// check for cache signature
if (args.size() > 3 && args[args.size() - 3 - (force ? 1 : 0)] == "CACHE")
{
cache = true;
}
// collect any values into a single semi-colon seperated value list
if(static_cast<unsigned short>(args.size()) >
static_cast<unsigned short>(1 + (cache ? 3 : 0) + (force ? 1 : 0)))
{
value = args[1];
size_t endPos = args.size() - (cache ? 3 : 0) - (force ? 1 : 0);
for(size_t i = 2; i < endPos; ++i)
{
value += ";";
value += args[i];
}
}
// we should be nice and try to catch some simple screwups if the last or
// next to last args are CACHE then they screwed up. If they used FORCE
// without CACHE they screwed up
if (args[args.size() - 1] == "CACHE" ||
args.size() > 1 && args[args.size() - 2] == "CACHE" ||
force && !cache)
{
std::string message;
message += "Syntax error in SET:\n";
message += "See the help for the SET command:\n";
message += "SET (";
for(std::vector<std::string>::const_iterator i = args.begin();
i != args.end(); ++i)
{
message += *i;
}
message += ")\n";
this->SetError(message.c_str());
return false;
}
if(cache)
{
cacheStart = args.size() - 3 - (force ? 1 : 0);
type = cmCacheManager::StringToType(args[cacheStart+1].c_str());
docstring = args[cacheStart+2].c_str();
}
// see if this is already in the cache
cmCacheManager::CacheIterator it =
this->Makefile->GetCacheManager()->GetCacheIterator(variable);
if(!it.IsAtEnd() && (it.GetType() != cmCacheManager::UNINITIALIZED))
{
// if the set is trying to CACHE the value but the value
// is already in the cache and the type is not internal
// then leave now without setting any definitions in the cache
// or the makefile
if(cache && type != cmCacheManager::INTERNAL && !force)
{
return true;
}
}
// if it is meant to be in the cache then define it in the cache
if(cache)
{
this->Makefile->AddCacheDefinition(variable,
value.c_str(),
docstring,
type);
}
else
{
// add the definition
this->Makefile->AddDefinition(variable, value.c_str());
}
return true;
}
|
