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_READ_TYPE "rb"
45 #define POPEN_BINARY_WRITE_TYPE "wb"
47 #define POPEN_BINARY_READ_TYPE "r"
48 #define POPEN_BINARY_WRITE_TYPE "w"
51 /* === T Y P E D E F S ===================================================== */
55 #if defined(__APPLE__) || defined(__CYGWIN__) || defined(_WIN32)
58 #define ETL_NO_THROW throw()
61 #ifdef HAVE_VASPRINTF // This is the preferred method
62 extern int vasprintf(char **,const char *,va_list)ETL_NO_THROW;
65 # ifdef HAVE_VSNPRINTF // This is the secondary method
66 extern int vsnprintf(char *,size_t,const char*,va_list)ETL_NO_THROW;
72 extern int vsscanf(const char *,const char *,va_list)ETL_NO_THROW;
74 #define ETL_NO_VSTRSCANF
76 extern int sscanf(const char *buf, const char *format, ...)ETL_NO_THROW;
84 /* === C L A S S E S & S T R U C T S ======================================= */
89 vstrprintf(const char *format, va_list args)
91 #ifdef HAVE_VASPRINTF // This is the preferred method (and safest)
94 vasprintf(&buffer,format,args);
99 #ifdef HAVE_VSNPRINTF // This is the secondary method (Safe, but bulky)
100 #warning etl::vstrprintf() has a maximum size of ETL_STRPRINTF_MAX_LENGTH in this configuration.
101 #ifdef ETL_THREAD_SAFE
102 char buffer[ETL_STRPRINTF_MAX_LENGTH];
104 static char buffer[ETL_STRPRINTF_MAX_LENGTH];
106 vsnprintf(buffer,sizeof(buffer),format,args);
108 #else // This is the worst method (UNSAFE, but "works")
109 #warning Potential for Buffer-overflow bug using vsprintf
110 #define ETL_UNSAFE_STRPRINTF (true)
111 // Here, we are doubling the size of the buffer to make this case
112 // slightly more safe.
113 #ifdef ETL_THREAD_SAFE
114 char buffer[ETL_STRPRINTF_MAX_LENGTH*2];
116 static char buffer[ETL_STRPRINTF_MAX_LENGTH*2];
118 vsprintf(buffer,format,args);
125 strprintf(const char *format, ...)
128 va_start(args,format);
129 return vstrprintf(format,args);
132 #ifndef ETL_NO_VSTRSCANF
134 vstrscanf(const std::string &data, const char*format, va_list args)
136 return vsscanf(data.c_str(),format,args);
140 strscanf(const std::string &data, const char*format, ...)
143 va_start(args,format);
144 return vstrscanf(data, format,args);
148 #if defined (HAVE_SSCANF) && defined (__GNUC__)
149 #define strscanf(data,format,...) sscanf(data.c_str(),format,__VA_ARGS__)
154 #define stratof(X) (atof((X).c_str()))
155 #define stratoi(X) (atoi((X).c_str()))
158 basename(const std::string &str)
160 std::string::const_iterator iter;
162 if(str.size() == 1 && str[0] == ETL_DIRECTORY_SEPARATOR)
165 if(str.end()[-1]==ETL_DIRECTORY_SEPARATOR)
170 for(;iter!=str.begin();iter--)
171 if(*iter==ETL_DIRECTORY_SEPARATOR)
174 if (*iter==ETL_DIRECTORY_SEPARATOR)
177 if(str.end()[-1]==ETL_DIRECTORY_SEPARATOR)
178 return std::string(iter,str.end()-1);
180 return std::string(iter,str.end());
184 dirname(const std::string &str)
186 std::string::const_iterator iter;
188 if(str.size() == 1 && str[0] == ETL_DIRECTORY_SEPARATOR)
191 if(str.end()[-1]==ETL_DIRECTORY_SEPARATOR)
196 for(;iter!=str.begin();iter--)
197 if(*iter==ETL_DIRECTORY_SEPARATOR)
200 if(iter==str.begin())
201 if (*iter==ETL_DIRECTORY_SEPARATOR)
206 return std::string(str.begin(),iter);
209 // filename_extension("/f.e/d.c") => ".c"
211 filename_extension(const std::string &str)
213 std::string base = basename(str);
214 std::string::size_type pos = base.find_last_of('.');
215 if (pos == std::string::npos) return std::string();
216 return base.substr(pos);
219 // filename_sans_extension("/f.e/d.c") => "/f.e/d"
221 filename_sans_extension(const std::string &str)
223 std::string base = basename(str);
224 std::string::size_type pos = base.find_last_of('.');
225 if (pos == std::string::npos) return str;
226 std::string dir = dirname(str);
227 if (dir == ".") return base.substr(0,pos);
228 return dir + ETL_DIRECTORY_SEPARATOR + base.substr(0,pos);
232 is_absolute_path(const std::string &path)
235 if(path.size()>=3 && path[1]==':' && (path[2]=='\\' || path[2]=='/'))
238 if(!path.empty() && path[0]==ETL_DIRECTORY_SEPARATOR)
244 unix_to_local_path(const std::string &path)
247 std::string::const_iterator iter;
248 for(iter=path.begin();iter!=path.end();iter++)
252 ret+=ETL_DIRECTORY_SEPARATOR;
265 current_working_directory()
268 std::string ret(getcwd(dir,sizeof(dir)));
273 get_root_from_path(std::string path)
276 std::string::const_iterator iter;
278 for(iter=path.begin();iter!=path.end();++iter)
280 if(*iter==ETL_DIRECTORY_SEPARATOR)
284 //if(iter!=path.end())
285 ret+=ETL_DIRECTORY_SEPARATOR;
290 remove_root_from_path(std::string path)
294 if(path[0]==ETL_DIRECTORY_SEPARATOR)
296 path.erase(path.begin());
299 path.erase(path.begin());
305 cleanup_path(std::string path)
309 while(basename(path)=="."&&path.size()!=1)path=dirname(path);
313 std::string dir(get_root_from_path(path));
314 if((dir=="../" || dir=="..\\") && ret.size())
317 if (*(ret.end()-1)!=ETL_DIRECTORY_SEPARATOR)
318 ret+=ETL_DIRECTORY_SEPARATOR;
320 else if((dir!="./" && dir!=".\\") && dir!=".")
322 path=remove_root_from_path(path);
324 if (ret.size()==0)ret+='.';
326 // Remove any trailing directory separators
327 if(ret.size() && ret[ret.size()-1]==ETL_DIRECTORY_SEPARATOR)
328 ret.erase(ret.begin()+ret.size()-1);
333 absolute_path(std::string path)
335 std::string ret(current_working_directory());
338 return cleanup_path(ret);
339 if(is_absolute_path(path))
340 return cleanup_path(path);
341 return cleanup_path(ret+ETL_DIRECTORY_SEPARATOR+path);
345 relative_path(std::string curr_path,std::string dest_path)
347 // If dest_path is already a relative path,
348 // then there is no need to do anything.
349 if(!is_absolute_path(dest_path))
350 dest_path=absolute_path(dest_path);
352 dest_path=cleanup_path(dest_path);
354 if(!is_absolute_path(curr_path))
355 curr_path=absolute_path(curr_path);
357 curr_path=cleanup_path(curr_path);
360 // If we are on windows and the dest path is on a different drive,
361 // then there is no way to make a relative path to it.
362 if(dest_path.size()>=3 && dest_path[1]==':' && dest_path[0]!=curr_path[0])
366 if(curr_path==dirname(dest_path))
367 return basename(dest_path);
369 while(!dest_path.empty() && !curr_path.empty() && get_root_from_path(dest_path)==get_root_from_path(curr_path))
371 dest_path=remove_root_from_path(dest_path);
372 curr_path=remove_root_from_path(curr_path);
375 while(!curr_path.empty())
377 dest_path=std::string("..")+ETL_DIRECTORY_SEPARATOR+dest_path;
378 curr_path=remove_root_from_path(curr_path);
386 /* === E N D =============================================================== */