1 /* =========================================================================
2 ** Extended Template and Library
3 ** stringf Procedure Implementation
6 ** Copyright (c) 2002 Robert B. Quattlebaum Jr.
7 ** Copyright (c) 2007 Chris Moore
9 ** This package is free software; you can redistribute it and/or
10 ** modify it under the terms of the GNU General Public License as
11 ** published by the Free Software Foundation; either version 2 of
12 ** the License, or (at your option) any later version.
14 ** This package is distributed in the hope that it will be useful,
15 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 ** General Public License for more details.
19 ** === N O T E S ===========================================================
21 ** This is an internal header file, included by other ETL headers.
22 ** You should not attempt to use it directly.
24 ** ========================================================================= */
26 /* === S T A R T =========================================================== */
28 #ifndef __ETL__STRINGF_H
29 #define __ETL__STRINGF_H
31 /* === H E A D E R S ======================================================= */
37 /* === M A C R O S ========================================================= */
39 #ifndef ETL_STRPRINTF_MAX_LENGTH
40 #define ETL_STRPRINTF_MAX_LENGTH (800)
43 /* === T Y P E D E F S ===================================================== */
47 #if defined(__APPLE__) || defined(__CYGWIN__) || defined(_WIN32)
50 #define ETL_NO_THROW throw()
53 #ifdef HAVE_VASPRINTF // This is the preferred method
54 extern int vasprintf(char **,const char *,va_list)ETL_NO_THROW;
57 # ifdef HAVE_VSNPRINTF // This is the secondary method
58 extern int vsnprintf(char *,size_t,const char*,va_list)ETL_NO_THROW;
64 extern int vsscanf(const char *,const char *,va_list)ETL_NO_THROW;
66 #define ETL_NO_VSTRSCANF
68 extern int sscanf(const char *buf, const char *format, ...)ETL_NO_THROW;
76 /* === C L A S S E S & S T R U C T S ======================================= */
81 vstrprintf(const char *format, va_list args)
83 #ifdef HAVE_VASPRINTF // This is the preferred method (and safest)
86 vasprintf(&buffer,format,args);
91 #ifdef HAVE_VSNPRINTF // This is the secondary method (Safe, but bulky)
92 #warning etl::vstrprintf() has a maximum size of ETL_STRPRINTF_MAX_LENGTH in this configuration.
93 #ifdef ETL_THREAD_SAFE
94 char buffer[ETL_STRPRINTF_MAX_LENGTH];
96 static char buffer[ETL_STRPRINTF_MAX_LENGTH];
98 vsnprintf(buffer,sizeof(buffer),format,args);
100 #else // This is the worst method (UNSAFE, but "works")
101 #warning Potential for Buffer-overflow bug using vsprintf
102 #define ETL_UNSAFE_STRPRINTF (true)
103 // Here, we are doubling the size of the buffer to make this case
104 // slightly more safe.
105 #ifdef ETL_THREAD_SAFE
106 char buffer[ETL_STRPRINTF_MAX_LENGTH*2];
108 static char buffer[ETL_STRPRINTF_MAX_LENGTH*2];
110 vsprintf(buffer,format,args);
117 strprintf(const char *format, ...)
120 va_start(args,format);
121 return vstrprintf(format,args);
124 #ifndef ETL_NO_VSTRSCANF
126 vstrscanf(const std::string &data, const char*format, va_list args)
128 return vsscanf(data.c_str(),format,args);
132 strscanf(const std::string &data, const char*format, ...)
135 va_start(args,format);
136 return vstrscanf(data, format,args);
140 #if defined (HAVE_SSCANF) && defined (__GNUC__)
141 #define strscanf(data,format,...) sscanf(data.c_str(),format,__VA_ARGS__)
146 #define stratof(X) (atof((X).c_str()))
147 #define stratoi(X) (atoi((X).c_str()))
150 basename(const std::string &str)
152 std::string::const_iterator iter;
154 if(str.size() == 1 && str[0] == ETL_DIRECTORY_SEPARATOR)
157 if(str.end()[-1]==ETL_DIRECTORY_SEPARATOR)
162 for(;iter!=str.begin();iter--)
163 if(*iter==ETL_DIRECTORY_SEPARATOR)
166 if (*iter==ETL_DIRECTORY_SEPARATOR)
169 if(str.end()[-1]==ETL_DIRECTORY_SEPARATOR)
170 return std::string(iter,str.end()-1);
172 return std::string(iter,str.end());
176 dirname(const std::string &str)
178 std::string::const_iterator iter;
180 if(str.size() == 1 && str[0] == ETL_DIRECTORY_SEPARATOR)
183 if(str.end()[-1]==ETL_DIRECTORY_SEPARATOR)
188 for(;iter!=str.begin();iter--)
189 if(*iter==ETL_DIRECTORY_SEPARATOR)
192 if(iter==str.begin())
193 if (*iter==ETL_DIRECTORY_SEPARATOR)
198 return std::string(str.begin(),iter);
201 // filename_extension("/f.e/d.c") => ".c"
203 filename_extension(const std::string &str)
205 std::string base = basename(str);
206 std::string::size_type pos = base.find_last_of('.');
207 if (pos == std::string::npos) return std::string();
208 return base.substr(pos);
211 // filename_sans_extension("/f.e/d.c") => "/f.e/d"
213 filename_sans_extension(const std::string &str)
215 std::string base = basename(str);
216 std::string::size_type pos = base.find_last_of('.');
217 if (pos == std::string::npos) return str;
218 std::string dir = dirname(str);
219 if (dir == ".") return base.substr(0,pos);
220 return dir + ETL_DIRECTORY_SEPARATOR + base.substr(0,pos);
224 is_absolute_path(const std::string &path)
227 if(path.size()>=3 && path[1]==':' && (path[2]=='\\' || path[2]=='/'))
230 if(!path.empty() && path[0]==ETL_DIRECTORY_SEPARATOR)
236 unix_to_local_path(const std::string &path)
239 std::string::const_iterator iter;
240 for(iter=path.begin();iter!=path.end();iter++)
244 ret+=ETL_DIRECTORY_SEPARATOR;
257 current_working_directory()
260 std::string ret(getcwd(dir,sizeof(dir)));
265 get_root_from_path(std::string path)
268 std::string::const_iterator iter;
270 for(iter=path.begin();iter!=path.end();++iter)
272 if(*iter==ETL_DIRECTORY_SEPARATOR)
276 //if(iter!=path.end())
277 ret+=ETL_DIRECTORY_SEPARATOR;
282 remove_root_from_path(std::string path)
286 if(path[0]==ETL_DIRECTORY_SEPARATOR)
288 path.erase(path.begin());
291 path.erase(path.begin());
297 cleanup_path(std::string path)
301 while(basename(path)=="."&&path.size()!=1)path=dirname(path);
305 std::string dir(get_root_from_path(path));
306 if((dir=="../" || dir=="..\\") && ret.size())
309 if (*(ret.end()-1)!=ETL_DIRECTORY_SEPARATOR)
310 ret+=ETL_DIRECTORY_SEPARATOR;
312 else if((dir!="./" && dir!=".\\") && dir!=".")
314 path=remove_root_from_path(path);
316 if (ret.size()==0)ret+='.';
318 // Remove any trailing directory separators
319 if(ret.size() && ret[ret.size()-1]==ETL_DIRECTORY_SEPARATOR)
320 ret.erase(ret.begin()+ret.size()-1);
325 absolute_path(std::string path)
327 std::string ret(current_working_directory());
330 return cleanup_path(ret);
331 if(is_absolute_path(path))
332 return cleanup_path(path);
333 return cleanup_path(ret+ETL_DIRECTORY_SEPARATOR+path);
337 relative_path(std::string curr_path,std::string dest_path)
339 // If dest_path is already a relative path,
340 // then there is no need to do anything.
341 if(!is_absolute_path(dest_path))
342 dest_path=absolute_path(dest_path);
344 dest_path=cleanup_path(dest_path);
346 if(!is_absolute_path(curr_path))
347 curr_path=absolute_path(curr_path);
349 curr_path=cleanup_path(curr_path);
352 // If we are on windows and the dest path is on a different drive,
353 // then there is no way to make a relative path to it.
354 if(dest_path.size()>=3 && dest_path[1]==':' && dest_path[0]!=curr_path[0])
358 if(curr_path==dirname(dest_path))
359 return basename(dest_path);
361 while(!dest_path.empty() && !curr_path.empty() && get_root_from_path(dest_path)==get_root_from_path(curr_path))
363 dest_path=remove_root_from_path(dest_path);
364 curr_path=remove_root_from_path(curr_path);
367 while(!curr_path.empty())
369 dest_path=std::string("..")+ETL_DIRECTORY_SEPARATOR+dest_path;
370 curr_path=remove_root_from_path(curr_path);
378 /* === E N D =============================================================== */