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
|
/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmSetCommand.h"
// cmSetCommand
bool cmSetCommand::InitialPass(std::vector<std::string> const& args,
cmExecutionStatus&)
{
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 (cmHasLiteralPrefix(variable, "ENV{") && 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
std::string currValue;
const bool currValueSet = cmSystemTools::GetEnv(varName, currValue);
delete[] varName;
// will it be set to something, then set it
if (args.size() > 1 && !args[1].empty()) {
// but only if it is different from current value
if (!currValueSet || currValue != args[1]) {
putEnvArg += args[1];
cmSystemTools::PutEnv(putEnvArg);
}
return true;
}
// if it will be cleared, then clear it if it isn't already clear
if (currValueSet) {
cmSystemTools::PutEnv(putEnvArg);
}
return true;
}
// SET (VAR) // Removes the definition of VAR.
if (args.size() == 1) {
this->Makefile->RemoveDefinition(variable);
return true;
}
// SET (VAR PARENT_SCOPE) // Removes the definition of VAR
// in the parent scope.
else if (args.size() == 2 && args[args.size() - 1] == "PARENT_SCOPE") {
this->Makefile->RaiseScope(variable, CM_NULLPTR);
return true;
}
// here are the remaining options
// SET (VAR value )
// SET (VAR value PARENT_SCOPE)
// 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
bool parentScope = false;
cmState::CacheEntryType type = cmState::STRING; // required if cache
const char* docstring = CM_NULLPTR; // required if cache
unsigned int ignoreLastArgs = 0;
// look for PARENT_SCOPE argument
if (args.size() > 1 && args[args.size() - 1] == "PARENT_SCOPE") {
parentScope = true;
ignoreLastArgs++;
} else {
// look for FORCE argument
if (args.size() > 4 && args[args.size() - 1] == "FORCE") {
force = true;
ignoreLastArgs++;
}
// check for cache signature
if (args.size() > 3 &&
args[args.size() - 3 - (force ? 1 : 0)] == "CACHE") {
cache = true;
ignoreLastArgs += 3;
}
}
// collect any values into a single semi-colon separated value list
value = cmJoin(cmMakeRange(args).advance(1).retreat(ignoreLastArgs), ";");
if (parentScope) {
this->Makefile->RaiseScope(variable, value.c_str());
return true;
}
// 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)) {
this->SetError("given invalid arguments for CACHE mode.");
return false;
}
if (cache) {
std::string::size_type cacheStart = args.size() - 3 - (force ? 1 : 0);
type = cmState::StringToCacheEntryType(args[cacheStart + 1].c_str());
docstring = args[cacheStart + 2].c_str();
}
// see if this is already in the cache
cmState* state = this->Makefile->GetState();
const char* existingValue = state->GetCacheEntryValue(variable);
if (existingValue &&
(state->GetCacheEntryType(variable) != cmState::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 != cmState::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, force);
} else {
// add the definition
this->Makefile->AddDefinition(variable, value.c_str());
}
return true;
}
|
