summaryrefslogtreecommitdiffstats
path: root/Source/cmIfCommand.cxx
blob: cf925df676da3f9be0224d12aea819b5781ce8cf (plain)
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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
/*=========================================================================

  Program:   CMake - Cross-Platform Makefile Generator
  Module:    $RCSfile$
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  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 "cmIfCommand.h"
#include <stdlib.h> // required for atof

#include <cmsys/RegularExpression.hxx>

bool cmIfFunctionBlocker::
IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile &mf)
{
  const char* name = lff.m_Name.c_str();
  const std::vector<cmListFileArgument>& args = lff.m_Arguments;
  // always let if statements through
  if (!strcmp(name,"IF"))
    {
    return false;
    }
  
  // watch for our ELSE or ENDIF
  if (!strcmp(name,"ELSE") || !strcmp(name,"ENDIF"))
    {
    if (args == m_Args)
      {
      // if it was an else statement then we should change state
      // and block this Else Command
      if (!strcmp(name,"ELSE"))
        {
        m_IsBlocking = !m_IsBlocking;
        return true;
        }
      // otherwise it must be an ENDIF statement, in that case remove the
      // function blocker
      mf.RemoveFunctionBlocker(lff);
      return true;
      }
    else if(args.empty())
      {
      std::string err = "Empty arguments for ";
      err += name;
      err += ".  Did you mean ";
      err += name;
      err += "( ";
      for(std::vector<cmListFileArgument>::const_iterator a = m_Args.begin();
          a != m_Args.end();++a)
        {
        err += (a->Quoted?"\"":"");
        err += a->Value;
        err += (a->Quoted?"\"":"");
        err += " ";
        }
      err += ")?";
      cmSystemTools::Error(err.c_str());
      }
    }
  return m_IsBlocking;
}

bool cmIfFunctionBlocker::ShouldRemove(const cmListFileFunction& lff,
                                       cmMakefile&)
{
  if (lff.m_Name == "ENDIF")
    {
    if (lff.m_Arguments == m_Args)
      {
      return true;
      }
    }
  return false;
}

void cmIfFunctionBlocker::
ScopeEnded(cmMakefile &mf)
{
  std::string errmsg = "The end of a CMakeLists file was reached with an IF statement that was not closed properly.\nWithin the directory: ";
  errmsg += mf.GetCurrentDirectory();
  errmsg += "\nThe arguments are: ";
  for(std::vector<cmListFileArgument>::const_iterator j = m_Args.begin();
      j != m_Args.end(); ++j)
    {   
    errmsg += (j->Quoted?"\"":"");
    errmsg += j->Value;
    errmsg += (j->Quoted?"\"":"");
    errmsg += " ";
    }
  cmSystemTools::Message(errmsg.c_str(), "Warning");
}

bool cmIfCommand::InvokeInitialPass(const std::vector<cmListFileArgument>& args)
{
  bool isValid;
  
  std::vector<std::string> expandedArguments;
  m_Makefile->ExpandArguments(args, expandedArguments);
  bool isTrue = cmIfCommand::IsTrue(expandedArguments,isValid,m_Makefile);
  
  if (!isValid)
    {
    std::string err = "An IF command had incorrect arguments: ";
    unsigned int i;
    for(i =0; i < args.size(); ++i)
      {
      err += (args[i].Quoted?"\"":"");
      err += args[i].Value;
      err += (args[i].Quoted?"\"":"");
      err += " ";
      }
    this->SetError(err.c_str());
    return false;
    }
  
  cmIfFunctionBlocker *f = new cmIfFunctionBlocker();
  // if is isn't true block the commands
  f->m_IsBlocking = !isTrue;
  f->m_Args = args;
  m_Makefile->AddFunctionBlocker(f);
  
  return true;
}

bool cmIfCommand::IsTrue(const std::vector<std::string> &args,
                         bool &isValid, const cmMakefile *makefile)
{
  // check for the different signatures
  bool isTrue = true;
  isValid = false;
  const char *def;
  const char *def2;
  
  if(args.size() < 1 )
    {
    isValid = true;
    return false;
    }

  if (args.size() == 1)
    {
    def = makefile->GetDefinition(args[0].c_str());
    if(cmSystemTools::IsOff(def))
      {
      isTrue = false;
      }
    isValid = true;
    }

  if (args.size() == 2 && (args[0] == "NOT"))
    {
    def = makefile->GetDefinition(args[1].c_str());
    if(!cmSystemTools::IsOff(def))
      {
      isTrue = false;
      }
    isValid = true;

    }

  if (args.size() == 2 && (args[0] == "COMMAND"))
    {
    if(!makefile->CommandExists(args[1].c_str()))
      {
      isTrue = false;
      }
    isValid = true;
    }

  if (args.size() == 2 && (args[0] == "EXISTS"))
    {
    if(!cmSystemTools::FileExists(args[1].c_str()))
      {
      isTrue = false;
      }
    isValid = true;
    }

  if (args.size() == 2 && (args[0] == "MATCHES"))
    {
    if(!cmSystemTools::FileExists(args[1].c_str()))
      {
      isTrue = false;
      }
    isValid = true;
    }

  if (args.size() == 3 && (args[1] == "AND"))
    {
    def = makefile->GetDefinition(args[0].c_str());
    def2 = makefile->GetDefinition(args[2].c_str());
    if(cmSystemTools::IsOff(def) || cmSystemTools::IsOff(def2))
      {
      isTrue = false;
      }
    isValid = true;
    }
  
  if (args.size() == 3 && (args[1] == "OR"))
    {
    def = makefile->GetDefinition(args[0].c_str());
    def2 = makefile->GetDefinition(args[2].c_str());
    if(cmSystemTools::IsOff(def) && cmSystemTools::IsOff(def2))
      {
      isTrue = false;
      }
    isValid = true;
    }

  if (args.size() == 3 && (args[1] == "MATCHES"))
    {
    def = cmIfCommand::GetVariableOrString(args[0].c_str(), makefile);
    cmsys::RegularExpression regEntry(args[2].c_str());
    
    // check for black line or comment
    if (!regEntry.find(def))
      {
      isTrue = false;
      }
    isValid = true;
    }
  
  if (args.size() == 3 && (args[1] == "LESS"))
    {
    def = cmIfCommand::GetVariableOrString(args[0].c_str(), makefile);
    def2 = cmIfCommand::GetVariableOrString(args[2].c_str(), makefile);
    if (!def)
      {
      def = args[0].c_str();
      }
    if (!def2)
      {
      def2 = args[2].c_str();
      }    
    if(atof(def) >= atof(def2))
      {
      isTrue = false;
      }
    isValid = true;
    }

  if (args.size() == 3 && (args[1] == "GREATER"))
    {
    def = cmIfCommand::GetVariableOrString(args[0].c_str(), makefile);
    def2 = cmIfCommand::GetVariableOrString(args[2].c_str(), makefile);
    if(atof(def) <= atof(def2))
      {
      isTrue = false;
      }
    isValid = true;
    }

  if (args.size() == 3 && (args[1] == "STRLESS"))
    {
    def = cmIfCommand::GetVariableOrString(args[0].c_str(), makefile);
    def2 = cmIfCommand::GetVariableOrString(args[2].c_str(), makefile);
    if(strcmp(def,def2) >= 0)
      {
      isTrue = false;
      }
    isValid = true;
    }

  if (args.size() == 3 && (args[1] == "STRGREATER"))
    {
    def = cmIfCommand::GetVariableOrString(args[0].c_str(), makefile);
    def2 = cmIfCommand::GetVariableOrString(args[2].c_str(), makefile);
    if(strcmp(def,def2) <= 0)
      {
      isTrue = false;
      }
    isValid = true;
    }
  return isTrue;
}

const char* cmIfCommand::GetVariableOrString(const char* str,
                                             const cmMakefile* mf)
{
  const char* def = mf->GetDefinition(str);
  if(!def)
    {
    def = str;
    }
  return def;
}