/* $Id$ */ /* * This file is part of OpenTTD. * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>. */ /** @file str.hpp String formating? */ #ifndef STR_HPP #define STR_HPP #include <errno.h> #include <stdarg.h> #include "blob.hpp" #include "../string_func.h" /** Blob based case sensitive ANSI/UTF-8 string */ struct CStrA : public CBlobT<char> { typedef CBlobT<char> base; ///< base class /** Create an empty CStrT */ FORCEINLINE CStrA() { } /** Copy constructor */ FORCEINLINE CStrA(const CStrA &src) : base(src) { base::FixTail(); } /** Take over ownership constructor */ FORCEINLINE CStrA(const OnTransfer& ot) : base(ot) { } /** Grow the actual buffer and fix the trailing zero at the end. */ FORCEINLINE char *GrowSizeNC(uint count) { char *ret = base::GrowSizeNC(count); base::FixTail(); return ret; } /** Append zero-ended C string. */ FORCEINLINE void AppendStr(const char *str) { if (!StrEmpty(str)) { base::AppendRaw(str, strlen(str)); base::FixTail(); } } /** Append another CStrA. */ FORCEINLINE void Append(const CStrA &src) { if (src.Length() > 0) { base::AppendRaw(src); base::FixTail(); } } /** Assignment from C string. */ FORCEINLINE CStrA &operator = (const char *src) { base::Clear(); AppendStr(src); return *this; } /** Assignment from another CStrA. */ FORCEINLINE CStrA &operator = (const CStrA &src) { if (&src != this) { base::Clear(); base::AppendRaw(src.Data(), src.Size()); base::FixTail(); } return *this; } /** Lower-than operator (to support stl collections) */ FORCEINLINE bool operator < (const CStrA &other) const { return strcmp(base::Data(), other.Data()) < 0; } /** Add formated string (like vsprintf) at the end of existing contents. */ int AddFormatL(const char *format, va_list args) { size_t addSize = max<size_t>(strlen(format), 16); addSize += addSize / 2; int ret; int err = 0; for (;;) { char *buf = MakeFreeSpace(addSize); ret = vsnprintf(buf, base::GetReserve(), format, args); if (ret >= (int)base::GetReserve()) { /* Greater return than given count means needed buffer size. */ addSize = ret + 1; continue; } if (ret >= 0) { /* success */ break; } err = errno; if (err != ERANGE && err != ENOENT && err != 0) { /* some strange failure */ break; } /* small buffer (M$ implementation) */ addSize *= 2; } if (ret > 0) { GrowSizeNC(ret); } else { base::FixTail(); } return ret; } /** Add formated string (like sprintf) at the end of existing contents. */ int CDECL WARN_FORMAT(2, 3) AddFormat(const char *format, ...) { va_list args; va_start(args, format); int ret = AddFormatL(format, args); va_end(args); return ret; } /** Assign formated string (like sprintf). */ int CDECL WARN_FORMAT(2, 3) Format(const char *format, ...) { base::Free(); va_list args; va_start(args, format); int ret = AddFormatL(format, args); va_end(args); return ret; } }; #endif /* STR_HPP */