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())
202 if (*iter==ETL_DIRECTORY_SEPARATOR)
208 return std::string(str.begin(),iter);
211 // filename_extension("/f.e/d.c") => ".c"
213 filename_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 std::string();
218 return base.substr(pos);
221 // filename_sans_extension("/f.e/d.c") => "/f.e/d"
223 filename_sans_extension(const std::string &str)
225 std::string base = basename(str);
226 std::string::size_type pos = base.find_last_of('.');
227 if (pos == std::string::npos) return str;
228 std::string dir = dirname(str);
229 if (dir == ".") return base.substr(0,pos);
230 return dir + ETL_DIRECTORY_SEPARATOR + base.substr(0,pos);
234 is_absolute_path(const std::string &path)
237 if(path.size()>=3 && path[1]==':' && (path[2]=='\\' || path[2]=='/'))
240 if(!path.empty() && path[0]==ETL_DIRECTORY_SEPARATOR)
246 unix_to_local_path(const std::string &path)
249 std::string::const_iterator iter;
250 for(iter=path.begin();iter!=path.end();iter++)
254 ret+=ETL_DIRECTORY_SEPARATOR;
267 current_working_directory()
270 std::string ret(getcwd(dir,sizeof(dir)));
275 get_root_from_path(std::string path)
278 std::string::const_iterator iter;
280 for(iter=path.begin();iter!=path.end();++iter)
282 if(*iter==ETL_DIRECTORY_SEPARATOR)
286 //if(iter!=path.end())
287 ret+=ETL_DIRECTORY_SEPARATOR;
292 remove_root_from_path(std::string path)
296 if(path[0]==ETL_DIRECTORY_SEPARATOR)
298 path.erase(path.begin());
301 path.erase(path.begin());
307 cleanup_path(std::string path)
311 while(basename(path)=="."&&path.size()!=1)path=dirname(path);
315 std::string dir(get_root_from_path(path));
316 if((dir=="../" || dir=="..\\") && ret.size())
319 if (*(ret.end()-1)!=ETL_DIRECTORY_SEPARATOR)
320 ret+=ETL_DIRECTORY_SEPARATOR;
322 else if((dir!="./" && dir!=".\\") && dir!=".")
324 path=remove_root_from_path(path);
326 if (ret.size()==0)ret+='.';
328 // Remove any trailing directory separators
329 if(ret.size() && ret[ret.size()-1]==ETL_DIRECTORY_SEPARATOR)
330 ret.erase(ret.begin()+ret.size()-1);
335 absolute_path(std::string path)
337 std::string ret(current_working_directory());
340 return cleanup_path(ret);
341 if(is_absolute_path(path))
342 return cleanup_path(path);
343 return cleanup_path(ret+ETL_DIRECTORY_SEPARATOR+path);
347 relative_path(std::string curr_path,std::string dest_path)
349 // If dest_path is already a relative path,
350 // then there is no need to do anything.
351 if(!is_absolute_path(dest_path))
352 dest_path=absolute_path(dest_path);
354 dest_path=cleanup_path(dest_path);
356 if(!is_absolute_path(curr_path))
357 curr_path=absolute_path(curr_path);
359 curr_path=cleanup_path(curr_path);
362 // If we are on windows and the dest path is on a different drive,
363 // then there is no way to make a relative path to it.
364 if(dest_path.size()>=3 && dest_path[1]==':' && dest_path[0]!=curr_path[0])
368 if(curr_path==dirname(dest_path))
369 return basename(dest_path);
371 while(!dest_path.empty() && !curr_path.empty() && get_root_from_path(dest_path)==get_root_from_path(curr_path))
373 dest_path=remove_root_from_path(dest_path);
374 curr_path=remove_root_from_path(curr_path);
377 while(!curr_path.empty())
379 dest_path=std::string("..")+ETL_DIRECTORY_SEPARATOR+dest_path;
380 curr_path=remove_root_from_path(curr_path);
388 /* === E N D =============================================================== */