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)
44 #define POPEN_BINARY_WRITE_TYPE "wb"
46 #define POPEN_BINARY_WRITE_TYPE "w"
49 /* === T Y P E D E F S ===================================================== */
53 #if defined(__APPLE__) || defined(__CYGWIN__) || defined(_WIN32)
56 #define ETL_NO_THROW throw()
59 #ifdef HAVE_VASPRINTF // This is the preferred method
60 extern int vasprintf(char **,const char *,va_list)ETL_NO_THROW;
63 # ifdef HAVE_VSNPRINTF // This is the secondary method
64 extern int vsnprintf(char *,size_t,const char*,va_list)ETL_NO_THROW;
70 extern int vsscanf(const char *,const char *,va_list)ETL_NO_THROW;
72 #define ETL_NO_VSTRSCANF
74 extern int sscanf(const char *buf, const char *format, ...)ETL_NO_THROW;
82 /* === C L A S S E S & S T R U C T S ======================================= */
87 vstrprintf(const char *format, va_list args)
89 #ifdef HAVE_VASPRINTF // This is the preferred method (and safest)
92 vasprintf(&buffer,format,args);
97 #ifdef HAVE_VSNPRINTF // This is the secondary method (Safe, but bulky)
98 #warning etl::vstrprintf() has a maximum size of ETL_STRPRINTF_MAX_LENGTH in this configuration.
99 #ifdef ETL_THREAD_SAFE
100 char buffer[ETL_STRPRINTF_MAX_LENGTH];
102 static char buffer[ETL_STRPRINTF_MAX_LENGTH];
104 vsnprintf(buffer,sizeof(buffer),format,args);
106 #else // This is the worst method (UNSAFE, but "works")
107 #warning Potential for Buffer-overflow bug using vsprintf
108 #define ETL_UNSAFE_STRPRINTF (true)
109 // Here, we are doubling the size of the buffer to make this case
110 // slightly more safe.
111 #ifdef ETL_THREAD_SAFE
112 char buffer[ETL_STRPRINTF_MAX_LENGTH*2];
114 static char buffer[ETL_STRPRINTF_MAX_LENGTH*2];
116 vsprintf(buffer,format,args);
123 strprintf(const char *format, ...)
126 va_start(args,format);
127 return vstrprintf(format,args);
130 #ifndef ETL_NO_VSTRSCANF
132 vstrscanf(const std::string &data, const char*format, va_list args)
134 return vsscanf(data.c_str(),format,args);
138 strscanf(const std::string &data, const char*format, ...)
141 va_start(args,format);
142 return vstrscanf(data, format,args);
146 #if defined (HAVE_SSCANF) && defined (__GNUC__)
147 #define strscanf(data,format,...) sscanf(data.c_str(),format,__VA_ARGS__)
152 #define stratof(X) (atof((X).c_str()))
153 #define stratoi(X) (atoi((X).c_str()))
156 basename(const std::string &str)
158 std::string::const_iterator iter;
160 if(str.size() == 1 && str[0] == ETL_DIRECTORY_SEPARATOR)
163 if(str.end()[-1]==ETL_DIRECTORY_SEPARATOR)
168 for(;iter!=str.begin();iter--)
169 if(*iter==ETL_DIRECTORY_SEPARATOR)
172 if (*iter==ETL_DIRECTORY_SEPARATOR)
175 if(str.end()[-1]==ETL_DIRECTORY_SEPARATOR)
176 return std::string(iter,str.end()-1);
178 return std::string(iter,str.end());
182 dirname(const std::string &str)
184 std::string::const_iterator iter;
186 if(str.size() == 1 && str[0] == ETL_DIRECTORY_SEPARATOR)
189 if(str.end()[-1]==ETL_DIRECTORY_SEPARATOR)
194 for(;iter!=str.begin();iter--)
195 if(*iter==ETL_DIRECTORY_SEPARATOR)
198 if(iter==str.begin())
199 if (*iter==ETL_DIRECTORY_SEPARATOR)
204 return std::string(str.begin(),iter);
207 // filename_extension("/f.e/d.c") => ".c"
209 filename_extension(const std::string &str)
211 std::string base = basename(str);
212 std::string::size_type pos = base.find_last_of('.');
213 if (pos == std::string::npos) return std::string();
214 return base.substr(pos);
217 // filename_sans_extension("/f.e/d.c") => "/f.e/d"
219 filename_sans_extension(const std::string &str)
221 std::string base = basename(str);
222 std::string::size_type pos = base.find_last_of('.');
223 if (pos == std::string::npos) return str;
224 std::string dir = dirname(str);
225 if (dir == ".") return base.substr(0,pos);
226 return dir + ETL_DIRECTORY_SEPARATOR + base.substr(0,pos);
230 is_absolute_path(const std::string &path)
233 if(path.size()>=3 && path[1]==':' && (path[2]=='\\' || path[2]=='/'))
236 if(!path.empty() && path[0]==ETL_DIRECTORY_SEPARATOR)
242 unix_to_local_path(const std::string &path)
245 std::string::const_iterator iter;
246 for(iter=path.begin();iter!=path.end();iter++)
250 ret+=ETL_DIRECTORY_SEPARATOR;
263 current_working_directory()
266 std::string ret(getcwd(dir,sizeof(dir)));
271 get_root_from_path(std::string path)
274 std::string::const_iterator iter;
276 for(iter=path.begin();iter!=path.end();++iter)
278 if(*iter==ETL_DIRECTORY_SEPARATOR)
282 //if(iter!=path.end())
283 ret+=ETL_DIRECTORY_SEPARATOR;
288 remove_root_from_path(std::string path)
292 if(path[0]==ETL_DIRECTORY_SEPARATOR)
294 path.erase(path.begin());
297 path.erase(path.begin());
303 cleanup_path(std::string path)
307 while(basename(path)=="."&&path.size()!=1)path=dirname(path);
311 std::string dir(get_root_from_path(path));
312 if((dir=="../" || dir=="..\\") && ret.size())
315 if (*(ret.end()-1)!=ETL_DIRECTORY_SEPARATOR)
316 ret+=ETL_DIRECTORY_SEPARATOR;
318 else if((dir!="./" && dir!=".\\") && dir!=".")
320 path=remove_root_from_path(path);
322 if (ret.size()==0)ret+='.';
324 // Remove any trailing directory separators
325 if(ret.size() && ret[ret.size()-1]==ETL_DIRECTORY_SEPARATOR)
326 ret.erase(ret.begin()+ret.size()-1);
331 absolute_path(std::string path)
333 std::string ret(current_working_directory());
336 return cleanup_path(ret);
337 if(is_absolute_path(path))
338 return cleanup_path(path);
339 return cleanup_path(ret+ETL_DIRECTORY_SEPARATOR+path);
343 relative_path(std::string curr_path,std::string dest_path)
345 // If dest_path is already a relative path,
346 // then there is no need to do anything.
347 if(!is_absolute_path(dest_path))
348 dest_path=absolute_path(dest_path);
350 dest_path=cleanup_path(dest_path);
352 if(!is_absolute_path(curr_path))
353 curr_path=absolute_path(curr_path);
355 curr_path=cleanup_path(curr_path);
358 // If we are on windows and the dest path is on a different drive,
359 // then there is no way to make a relative path to it.
360 if(dest_path.size()>=3 && dest_path[1]==':' && dest_path[0]!=curr_path[0])
364 if(curr_path==dirname(dest_path))
365 return basename(dest_path);
367 while(!dest_path.empty() && !curr_path.empty() && get_root_from_path(dest_path)==get_root_from_path(curr_path))
369 dest_path=remove_root_from_path(dest_path);
370 curr_path=remove_root_from_path(curr_path);
373 while(!curr_path.empty())
375 dest_path=std::string("..")+ETL_DIRECTORY_SEPARATOR+dest_path;
376 curr_path=remove_root_from_path(curr_path);
384 /* === E N D =============================================================== */