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ZshCompletionOutput.h
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1 // -*- Mode: c++; c-basic-offset: 4; tab-width: 4; -*-
2
3 /******************************************************************************
4 *
5 * file: ZshCompletionOutput.h
6 *
7 * Copyright (c) 2006, Oliver Kiddle
8 * Copyright (c) 2017 Google Inc.
9 * All rights reserved.
10 *
11 * See the file COPYING in the top directory of this distribution for
12 * more information.
13 *
14 * THE SOFTWARE IS PROVIDED _AS IS_, WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
21 *
22 *****************************************************************************/
23
24 #ifndef TCLAP_ZSHCOMPLETIONOUTPUT_H
25 #define TCLAP_ZSHCOMPLETIONOUTPUT_H
26
27 #ifdef HAVE_CONFIG_H
28 #include <config.h>
29 #endif
30
31 #include <string>
32 #include <vector>
33 #include <list>
34 #include <iostream>
35 #include <map>
36
37 #include <tclap/CmdLineInterface.h>
38 #include <tclap/CmdLineOutput.h>
39 #include <tclap/XorHandler.h>
40 #include <tclap/Arg.h>
41 #include <tclap/sstream.h>
42
43 namespace TCLAP {
44
49 class ZshCompletionOutput : public CmdLineOutput
50 {
51
52 public:
53
54 ZshCompletionOutput();
55
61 virtual void usage(CmdLineInterface& c);
62
68 virtual void version(CmdLineInterface& c);
69
76 virtual void failure(CmdLineInterface& c,
77 ArgException& e );
78
79 protected:
80
81 void basename( std::string& s );
82 void quoteSpecialChars( std::string& s );
83
84 std::string getMutexList( CmdLineInterface& _cmd, Arg* a );
85 void printOption( Arg* it, std::string mutex );
86 void printArg( Arg* it );
87
88 std::map<std::string, std::string> common;
89 char theDelimiter;
90 };
91
92 ZshCompletionOutput::ZshCompletionOutput()
93 : common(std::map<std::string, std::string>()),
94 theDelimiter('=')
95 {
96 common["host"] = "_hosts";
97 common["hostname"] = "_hosts";
98 common["file"] = "_files";
99 common["filename"] = "_files";
100 common["user"] = "_users";
101 common["username"] = "_users";
102 common["directory"] = "_directories";
103 common["path"] = "_directories";
104 common["url"] = "_urls";
105 }
106
107 inline void ZshCompletionOutput::version(CmdLineInterface& _cmd)
108 {
109 std::cout << _cmd.getVersion() << std::endl;
110 }
111
112 inline void ZshCompletionOutput::usage(CmdLineInterface& _cmd )
113 {
114 std::list<Arg*> argList = _cmd.getArgList();
115 std::string progName = _cmd.getProgramName();
116 std::string xversion = _cmd.getVersion();
117 theDelimiter = _cmd.getDelimiter();
118 basename(progName);
119
120 std::cout << "#compdef " << progName << std::endl << std::endl <<
121 "# " << progName << " version " << _cmd.getVersion() << std::endl << std::endl <<
122 "_arguments -s -S";
123
124 for (ArgListIterator it = argList.begin(); it != argList.end(); it++)
125 {
126 if ( (*it)->shortID().at(0) == '<' )
127 printArg((*it));
128 else if ( (*it)->getFlag() != "-" )
129 printOption((*it), getMutexList(_cmd, *it));
130 }
131
132 std::cout << std::endl;
133 }
134
135 inline void ZshCompletionOutput::failure( CmdLineInterface& _cmd,
136 ArgException& e )
137 {
138 static_cast<void>(_cmd); // unused
139 std::cout << e.what() << std::endl;
140 }
141
142 inline void ZshCompletionOutput::quoteSpecialChars( std::string& s )
143 {
144 size_t idx = s.find_last_of(':');
145 while ( idx != std::string::npos )
146 {
147 s.insert(idx, 1, '\\');
148 idx = s.find_last_of(':', idx);
149 }
150 idx = s.find_last_of('\'');
151 while ( idx != std::string::npos )
152 {
153 s.insert(idx, "'\\'");
154 if (idx == 0)
155 idx = std::string::npos;
156 else
157 idx = s.find_last_of('\'', --idx);
158 }
159 }
160
161 inline void ZshCompletionOutput::basename( std::string& s )
162 {
163 size_t p = s.find_last_of('/');
164 if ( p != std::string::npos )
165 {
166 s.erase(0, p + 1);
167 }
168 }
169
170 inline void ZshCompletionOutput::printArg(Arg* a)
171 {
172 static int count = 1;
173
174 std::cout << " \\" << std::endl << " '";
175 if ( a->acceptsMultipleValues() )
176 std::cout << '*';
177 else
178 std::cout << count++;
179 std::cout << ':';
180 if ( !a->isRequired() )
181 std::cout << ':';
182
183 std::cout << a->getName() << ':';
184 std::map<std::string, std::string>::iterator compArg = common.find(a->getName());
185 if ( compArg != common.end() )
186 {
187 std::cout << compArg->second;
188 }
189 else
190 {
191 std::cout << "_guard \"^-*\" " << a->getName();
192 }
193 std::cout << '\'';
194 }
195
196 inline void ZshCompletionOutput::printOption(Arg* a, std::string mutex)
197 {
198 std::string flag = a->flagStartChar() + a->getFlag();
199 std::string name = a->nameStartString() + a->getName();
200 std::string desc = a->getDescription();
201
202 // remove full stop and capitalization from description as
203 // this is the convention for zsh function
204 if (!desc.compare(0, 12, "(required) "))
205 {
206 desc.erase(0, 12);
207 }
208 if (!desc.compare(0, 15, "(OR required) "))
209 {
210 desc.erase(0, 15);
211 }
212 size_t len = desc.length();
213 if (len && desc.at(--len) == '.')
214 {
215 desc.erase(len);
216 }
217 if (len)
218 {
219 desc.replace(0, 1, 1, tolower(desc.at(0)));
220 }
221
222 std::cout << " \\" << std::endl << " '" << mutex;
223
224 if ( a->getFlag().empty() )
225 {
226 std::cout << name;
227 }
228 else
229 {
230 std::cout << "'{" << flag << ',' << name << "}'";
231 }
232 if ( theDelimiter == '=' && a->isValueRequired() )
233 std::cout << "=-";
234 quoteSpecialChars(desc);
235 std::cout << '[' << desc << ']';
236
237 if ( a->isValueRequired() )
238 {
239 std::string arg = a->shortID();
240 // Example arg: "[-A <integer>] ... "
241 size_t pos = arg.rfind(" ... ");
242 if (pos != std::string::npos) {
243 arg.erase(pos);
244 }
245
246 arg.erase(0, arg.find_last_of(theDelimiter) + 1);
247 if ( arg.at(arg.length()-1) == ']' )
248 arg.erase(arg.length()-1);
249 if ( arg.at(arg.length()-1) == ']' )
250 {
251 arg.erase(arg.length()-1);
252 }
253 if ( arg.at(0) == '<' )
254 {
255 arg.erase(arg.length()-1);
256 arg.erase(0, 1);
257 }
258 size_t p = arg.find('|');
259 if ( p != std::string::npos )
260 {
261 do
262 {
263 arg.replace(p, 1, 1, ' ');
264 }
265 while ( (p = arg.find_first_of('|', p)) != std::string::npos );
266 quoteSpecialChars(arg);
267 std::cout << ": :(" << arg << ')';
268 }
269 else
270 {
271 std::cout << ':' << arg;
272 std::map<std::string, std::string>::iterator compArg = common.find(arg);
273 if ( compArg != common.end() )
274 {
275 std::cout << ':' << compArg->second;
276 }
277 }
278 }
279
280 std::cout << '\'';
281 }
282
283 inline std::string ZshCompletionOutput::getMutexList( CmdLineInterface& _cmd, Arg* a)
284 {
285 XorHandler xorHandler = _cmd.getXorHandler();
286 std::vector< std::vector<Arg*> > xorList = xorHandler.getXorList();
287
288 if (a->getName() == "help" || a->getName() == "version")
289 {
290 return "(-)";
291 }
292
293 ostringstream list;
294 if ( a->acceptsMultipleValues() )
295 {
296 list << '*';
297 }
298
299 for ( int i = 0; static_cast<unsigned int>(i) < xorList.size(); i++ )
300 {
301 for ( ArgVectorIterator it = xorList[i].begin();
302 it != xorList[i].end();
303 it++)
304 if ( a == (*it) )
305 {
306 list << '(';
307 for ( ArgVectorIterator iu = xorList[i].begin();
308 iu != xorList[i].end();
309 iu++ )
310 {
311 bool notCur = (*iu) != a;
312 bool hasFlag = !(*iu)->getFlag().empty();
313 if ( iu != xorList[i].begin() && (notCur || hasFlag) )
314 list << ' ';
315 if (hasFlag)
316 list << (*iu)->flagStartChar() << (*iu)->getFlag() << ' ';
317 if ( notCur || hasFlag )
318 list << (*iu)->nameStartString() << (*iu)->getName();
319 }
320 list << ')';
321 return list.str();
322 }
323 }
324
325 // wasn't found in xor list
326 if (!a->getFlag().empty()) {
327 list << "(" << a->flagStartChar() << a->getFlag() << ' ' <<
328 a->nameStartString() << a->getName() << ')';
329 }
330
331 return list.str();
332 }
333
334 } //namespace TCLAP
335 #endif
TCLAP::XorHandler::getXorList
std::vector< std::vector< Arg * > > & getXorList()
Definition: XorHandler.h:153
TCLAP::Arg
A virtual base class that defines the essential data for all arguments.
Definition: Arg.h:65
TCLAP::ArgException::what
const char * what() const
Returns the arg id and error text.
Definition: ArgException.h:80
TCLAP::ArgException
A simple class that defines and argument exception.
Definition: ArgException.h:36
TCLAP::ZshCompletionOutput::theDelimiter
char theDelimiter
Definition: ZshCompletionOutput.h:89
TCLAP::Arg::getDescription
std::string getDescription() const
Returns the argument description.
Definition: Arg.h:555
TCLAP::CmdLineInterface::getProgramName
virtual std::string & getProgramName()=0
Returns the program name string.
CmdLineOutput.h
TCLAP::Arg::flagStartChar
static char flagStartChar()
Definition: Arg.h:227
TCLAP::ZshCompletionOutput::ZshCompletionOutput
ZshCompletionOutput()
Definition: ZshCompletionOutput.h:92
TCLAP::CmdLineInterface::getArgList
virtual std::list< Arg * > & getArgList()=0
Returns the argList.
XorHandler.h
TCLAP::CmdLineInterface::getDelimiter
virtual char getDelimiter()=0
Returns the delimiter string.
TCLAP::ZshCompletionOutput::quoteSpecialChars
void quoteSpecialChars(std::string &s)
Definition: ZshCompletionOutput.h:142
TCLAP::Arg::getName
const std::string & getName() const
Returns the argument name.
Definition: Arg.h:570
TCLAP::Arg::isValueRequired
bool isValueRequired() const
Indicates whether a value must be specified for argument.
Definition: Arg.h:574
CmdLineInterface.h
TCLAP::CmdLineInterface::getVersion
virtual std::string & getVersion()=0
Returns the version string.
TCLAP::ZshCompletionOutput::version
virtual void version(CmdLineInterface &c)
Prints the version to stdout.
Definition: ZshCompletionOutput.h:107
TCLAP::ZshCompletionOutput::printOption
void printOption(Arg *it, std::string mutex)
Definition: ZshCompletionOutput.h:196
TCLAP::ZshCompletionOutput::basename
void basename(std::string &s)
Definition: ZshCompletionOutput.h:161
TCLAP::Arg::getFlag
const std::string & getFlag() const
Returns the argument flag.
Definition: Arg.h:568
TCLAP::CmdLineInterface::getXorHandler
virtual XorHandler & getXorHandler()=0
Returns the XorHandler.
TCLAP::Arg::nameStartString
static const std::string nameStartString()
Definition: Arg.h:246
TCLAP::ZshCompletionOutput::usage
virtual void usage(CmdLineInterface &c)
Prints the usage to stdout.
Definition: ZshCompletionOutput.h:112
TCLAP::Arg::shortID
virtual std::string shortID(const std::string &valueId="val") const
Returns a short ID for the usage.
Definition: Arg.h:506
TCLAP::ArgListIterator
std::list< Arg * >::iterator ArgListIterator
Typedef of an Arg list iterator.
Definition: Arg.h:397
TCLAP::CmdLineInterface
The base class that manages the command line definition and passes along the parsing to the appropria...
Definition: CmdLineInterface.h:43
TCLAP::Arg::acceptsMultipleValues
virtual bool acceptsMultipleValues()
Use by output classes to determine whether an Arg accepts multiple values.
Definition: Arg.h:675
TCLAP::ArgVectorIterator
std::vector< Arg * >::iterator ArgVectorIterator
Typedef of an Arg vector iterator.
Definition: Arg.h:402
TCLAP::ostringstream
std::ostringstream ostringstream
Definition: sstream.h:38
Arg.h
TCLAP::ZshCompletionOutput::common
std::map< std::string, std::string > common
Definition: ZshCompletionOutput.h:88
TCLAP
Definition: Arg.h:58
TCLAP::ZshCompletionOutput::getMutexList
std::string getMutexList(CmdLineInterface &_cmd, Arg *a)
Definition: ZshCompletionOutput.h:283
TCLAP::XorHandler
This class handles lists of Arg's that are to be XOR'd on the command line.
Definition: XorHandler.h:38
sstream.h
TCLAP::ZshCompletionOutput::failure
virtual void failure(CmdLineInterface &c, ArgException &e)
Prints (to stderr) an error message, short usage Can be overridden to produce alternative behavior...
Definition: ZshCompletionOutput.h:135
TCLAP::CmdLineOutput
The interface that any output object must implement.
Definition: CmdLineOutput.h:41
TCLAP::ZshCompletionOutput::printArg
void printArg(Arg *it)
Definition: ZshCompletionOutput.h:170
TCLAP::Arg::isRequired
virtual bool isRequired() const
Indicates whether the argument is required.
Definition: Arg.h:572
TCLAP::ZshCompletionOutput
A class that generates a Zsh completion function as output from the usage() method for the given CmdL...
Definition: ZshCompletionOutput.h:49