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# cpl_string.h

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    00001 /**********************************************************************
    00002  * $Id: cpl_string.h 28025 2014-11-28 00:01:32Z rouault $
    00003  *
    00004  * Name:     cpl_string.h
    00005  * Project:  CPL - Common Portability Library
    00006  * Purpose:  String and StringList functions.
    00007  * Author:   Daniel Morissette, dmorissette@mapgears.com
    00008  *
    00009  **********************************************************************
    00010  * Copyright (c) 1998, Daniel Morissette
    00011  * Copyright (c) 2008-2014, Even Rouault <even dot rouault at mines-paris dot org>
    00012  *
    00013  * Permission is hereby granted, free of charge, to any person obtaining a
    00014  * copy of this software and associated documentation files (the "Software"),
    00015  * to deal in the Software without restriction, including without limitation
    00016  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
    00017  * and/or sell copies of the Software, and to permit persons to whom the
    00018  * Software is furnished to do so, subject to the following conditions:
    00019  *
    00020  * The above copyright notice and this permission notice shall be included
    00021  * in all copies or substantial portions of the Software.
    00022  *
    00023  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    00024  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00025  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
    00026  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00027  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    00028  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    00029  * DEALINGS IN THE SOFTWARE.
    00030  ****************************************************************************/
    00031
    00032 #ifndef _CPL_STRING_H_INCLUDED
    00033 #define _CPL_STRING_H_INCLUDED
    00034
    00035 #include "cpl_vsi.h"
    00036 #include "cpl_error.h"
    00037 #include "cpl_conv.h"
    00038
    00061 CPL_C_START
    00062
    00063 char CPL_DLL **CSLAddString(char **papszStrList, const char *pszNewString) CPL_WARN_UNUSED_RESULT;
    00064 int CPL_DLL CSLCount(char **papszStrList);
    00065 const char CPL_DLL *CSLGetField( char **, int );
    00066 void CPL_DLL CPL_STDCALL CSLDestroy(char **papszStrList);
    00067 char CPL_DLL **CSLDuplicate(char **papszStrList) CPL_WARN_UNUSED_RESULT;
    00068 char CPL_DLL **CSLMerge( char **papszOrig, char **papszOverride ) CPL_WARN_UNUSED_RESULT;
    00069
    00070 char CPL_DLL **CSLTokenizeString(const char *pszString ) CPL_WARN_UNUSED_RESULT;
    00071 char CPL_DLL **CSLTokenizeStringComplex(const char *pszString,
    00072                                    const char *pszDelimiter,
    00073                                    int bHonourStrings, int bAllowEmptyTokens ) CPL_WARN_UNUSED_RESULT;
    00074 char CPL_DLL **CSLTokenizeString2( const char *pszString,
    00075                                    const char *pszDelimeter,
    00076                                    int nCSLTFlags ) CPL_WARN_UNUSED_RESULT;
    00077
    00078 #define CSLT_HONOURSTRINGS      0x0001
    00079 #define CSLT_ALLOWEMPTYTOKENS   0x0002
    00080 #define CSLT_PRESERVEQUOTES     0x0004
    00081 #define CSLT_PRESERVEESCAPES    0x0008
    00082 #define CSLT_STRIPLEADSPACES    0x0010
    00083 #define CSLT_STRIPENDSPACES     0x0020
    00084
    00085 int CPL_DLL CSLPrint(char **papszStrList, FILE *fpOut);
    00086 char CPL_DLL **CSLLoad(const char *pszFname) CPL_WARN_UNUSED_RESULT;
    00087 char CPL_DLL **CSLLoad2(const char *pszFname, int nMaxLines, int nMaxCols, char** papszOptions) CPL_WARN_UNUSED_RESULT;
    00088 int CPL_DLL CSLSave(char **papszStrList, const char *pszFname);
    00089
    00090 char CPL_DLL **CSLInsertStrings(char **papszStrList, int nInsertAtLineNo,
    00091                          char **papszNewLines) CPL_WARN_UNUSED_RESULT;
    00092 char CPL_DLL **CSLInsertString(char **papszStrList, int nInsertAtLineNo,
    00093                                const char *pszNewLine) CPL_WARN_UNUSED_RESULT;
    00094 char CPL_DLL **CSLRemoveStrings(char **papszStrList, int nFirstLineToDelete,
    00095                          int nNumToRemove, char ***ppapszRetStrings) CPL_WARN_UNUSED_RESULT;
    00096 int CPL_DLL CSLFindString( char **, const char * );
    00097 int CPL_DLL CSLFindStringCaseSensitive( char **, const char * );
    00098 int CPL_DLL CSLPartialFindString( char **papszHaystack,
    00099         const char * pszNeedle );
    00100 int CPL_DLL CSLFindName(char **papszStrList, const char *pszName);
    00101 int CPL_DLL CSLTestBoolean( const char *pszValue );
    00102 int CPL_DLL CSLFetchBoolean( char **papszStrList, const char *pszKey,
    00103                              int bDefault );
    00104
    00105 const char CPL_DLL *
    00106       CPLParseNameValue(const char *pszNameValue, char **ppszKey );
    00107 const char CPL_DLL *
    00108       CSLFetchNameValue(char **papszStrList, const char *pszName);
    00109 const char CPL_DLL *
    00110       CSLFetchNameValueDef(char **papszStrList, const char *pszName,
    00111                            const char *pszDefault );
    00112 char CPL_DLL **
    00113       CSLFetchNameValueMultiple(char **papszStrList, const char *pszName);
    00114 char CPL_DLL **
    00115       CSLAddNameValue(char **papszStrList,
    00116                       const char *pszName, const char *pszValue) CPL_WARN_UNUSED_RESULT;
    00117 char CPL_DLL **
    00118       CSLSetNameValue(char **papszStrList,
    00119                       const char *pszName, const char *pszValue) CPL_WARN_UNUSED_RESULT;
    00120 void CPL_DLL CSLSetNameValueSeparator( char ** papszStrList,
    00121                                        const char *pszSeparator );
    00122
    00123 #define CPLES_BackslashQuotable 0
    00124 #define CPLES_XML               1
    00125 #define CPLES_URL               2
    00126 #define CPLES_SQL               3
    00127 #define CPLES_CSV               4
    00128 #define CPLES_XML_BUT_QUOTES    5
    00129
    00130 char CPL_DLL *CPLEscapeString( const char *pszString, int nLength,
    00131                                int nScheme ) CPL_WARN_UNUSED_RESULT;
    00132 char CPL_DLL *CPLUnescapeString( const char *pszString, int *pnLength,
    00133                                  int nScheme ) CPL_WARN_UNUSED_RESULT;
    00134
    00135 char CPL_DLL *CPLBinaryToHex( int nBytes, const GByte *pabyData ) CPL_WARN_UNUSED_RESULT;
    00136 GByte CPL_DLL *CPLHexToBinary( const char *pszHex, int *pnBytes ) CPL_WARN_UNUSED_RESULT;
    00137
    00138 char CPL_DLL *CPLBase64Encode( int nBytes, const GByte *pabyData ) CPL_WARN_UNUSED_RESULT;
    00139 int CPL_DLL CPLBase64DecodeInPlace(GByte* pszBase64);
    00140
    00141 typedef enum
    00142 {
    00143     CPL_VALUE_STRING,
    00144     CPL_VALUE_REAL,
    00145     CPL_VALUE_INTEGER
    00146 } CPLValueType;
    00147
    00148 CPLValueType CPL_DLL CPLGetValueType(const char* pszValue);
    00149
    00150 size_t CPL_DLL CPLStrlcpy(char* pszDest, const char* pszSrc, size_t nDestSize);
    00151 size_t CPL_DLL CPLStrlcat(char* pszDest, const char* pszSrc, size_t nDestSize);
    00152 size_t CPL_DLL CPLStrnlen (const char *pszStr, size_t nMaxLen);
    00153
    00154 /* -------------------------------------------------------------------- */
    00155 /*      Locale independant formatting functions.                        */
    00156 /* -------------------------------------------------------------------- */
    00157 int CPL_DLL CPLvsnprintf(char *str, size_t size, const char* fmt, va_list args);
    00158 int CPL_DLL CPLsnprintf(char *str, size_t size, const char* fmt, ...) CPL_PRINT_FUNC_FORMAT(3,4);
    00159 int CPL_DLL CPLsprintf(char *str, const char* fmt, ...) CPL_PRINT_FUNC_FORMAT(2, 3);
    00160 int CPL_DLL CPLprintf(const char* fmt, ...) CPL_PRINT_FUNC_FORMAT(1, 2);
    00161 int CPL_DLL CPLsscanf(const char* str, const char* fmt, ...); /* caution: only works with limited number of formats */
    00162
    00163 const char CPL_DLL *CPLSPrintf(const char *fmt, ...) CPL_PRINT_FUNC_FORMAT(1, 2);
    00164 char CPL_DLL **CSLAppendPrintf(char **papszStrList, const char *fmt, ...) CPL_PRINT_FUNC_FORMAT(2, 3) CPL_WARN_UNUSED_RESULT;
    00165 int CPL_DLL CPLVASPrintf(char **buf, const char *fmt, va_list args );
    00166
    00167 /* -------------------------------------------------------------------- */
    00168 /*      RFC 23 character set conversion/recoding API (cpl_recode.cpp).  */
    00169 /* -------------------------------------------------------------------- */
    00170 #define CPL_ENC_LOCALE     ""
    00171 #define CPL_ENC_UTF8       "UTF-8"
    00172 #define CPL_ENC_UTF16      "UTF-16"
    00173 #define CPL_ENC_UCS2       "UCS-2"
    00174 #define CPL_ENC_UCS4       "UCS-4"
    00175 #define CPL_ENC_ASCII      "ASCII"
    00176 #define CPL_ENC_ISO8859_1  "ISO-8859-1"
    00177
    00178 int CPL_DLL  CPLEncodingCharSize( const char *pszEncoding );
    00179 void CPL_DLL  CPLClearRecodeWarningFlags( void );
    00180 char CPL_DLL *CPLRecode( const char *pszSource,
    00181                          const char *pszSrcEncoding,
    00182                          const char *pszDstEncoding ) CPL_WARN_UNUSED_RESULT;
    00183 char CPL_DLL *CPLRecodeFromWChar( const wchar_t *pwszSource,
    00184                                   const char *pszSrcEncoding,
    00185                                   const char *pszDstEncoding ) CPL_WARN_UNUSED_RESULT;
    00186 wchar_t CPL_DLL *CPLRecodeToWChar( const char *pszSource,
    00187                                    const char *pszSrcEncoding,
    00188                                    const char *pszDstEncoding ) CPL_WARN_UNUSED_RESULT;
    00189 int CPL_DLL CPLIsUTF8(const char* pabyData, int nLen);
    00190 char CPL_DLL *CPLForceToASCII(const char* pabyData, int nLen, char chReplacementChar) CPL_WARN_UNUSED_RESULT;
    00191 int CPL_DLL CPLStrlenUTF8(const char *pszUTF8Str);
    00192
    00193 CPL_C_END
    00194
    00195 /************************************************************************/
    00196 /*                              CPLString                               */
    00197 /************************************************************************/
    00198
    00199 #if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS)
    00200
    00201 #include <string>
    00202
    00203 /*
    00204  * Simple trick to avoid "using" declaration in header for new compilers
    00205  * but make it still working with old compilers which throw C2614 errors.
    00206  *
    00207  * Define MSVC_OLD_STUPID_BEHAVIOUR
    00208  * for old compilers: VC++ 5 and 6 as well as eVC++ 3 and 4.
    00209  */
    00210
    00211 /*
    00212  * Detect old MSVC++ compiler <= 6.0
    00213  * 1200 - VC++ 6.0
    00214  * 1200-1202 - eVC++ 4.0
    00215  */
    00216 #if defined(_MSC_VER)
    00217 # if (_MSC_VER <= 1202)
    00218 #  define MSVC_OLD_STUPID_BEHAVIOUR
    00219 # endif
    00220 #endif
    00221
    00222 /* Avoid C2614 errors */
    00223 #ifdef MSVC_OLD_STUPID_BEHAVIOUR
    00224     using std::string;
    00225 # define gdal_std_string string
    00226 #else
    00227 # define gdal_std_string std::string
    00228 #endif
    00229
    00230 /* Remove annoying warnings in Microsoft eVC++ and Microsoft Visual C++ */
    00231 #if defined(WIN32CE)
    00232 #  pragma warning(disable:4251 4275 4786)
    00233 #endif
    00234
    00236 class CPL_DLL CPLString : public gdal_std_string
    00237 {
    00238 public:
    00239
    00240
    00241     CPLString(void) {}
    00242     CPLString( const std::string &oStr ) : gdal_std_string( oStr ) {}
    00243     CPLString( const char *pszStr ) : gdal_std_string( pszStr ) {}
    00244
    00245     operator const char* (void) const { return c_str(); }
    00246
    00247     char& operator[](std::string::size_type i)
    00248     {
    00249         return gdal_std_string::operator[](i);
    00250     }
    00251
    00252     const char& operator[](std::string::size_type i) const
    00253     {
    00254         return gdal_std_string::operator[](i);
    00255     }
    00256
    00257     char& operator[](int i)
    00258     {
    00259         return gdal_std_string::operator[](static_cast<std::string::size_type>(i));
    00260     }
    00261
    00262     const char& operator[](int i) const
    00263     {
    00264         return gdal_std_string::operator[](static_cast<std::string::size_type>(i));
    00265     }
    00266
    00267     void Clear() { resize(0); }
    00268
    00269     // NULL safe assign and free.
    00270     void Seize(char *pszValue)
    00271     {
    00272         if (pszValue == NULL )
    00273             Clear();
    00274         else
    00275         {
    00276             *this = pszValue;
    00277             CPLFree(pszValue);
    00278         }
    00279     }
    00280
    00281     /* There seems to be a bug in the way the compiler count indices... Should be CPL_PRINT_FUNC_FORMAT (1, 2) */
    00282     CPLString &Printf( const char *pszFormat, ... ) CPL_PRINT_FUNC_FORMAT (2, 3);
    00283     CPLString &vPrintf( const char *pszFormat, va_list args );
    00284     CPLString &FormatC( double dfValue, const char *pszFormat = NULL );
    00285     CPLString &Trim();
    00286     CPLString &Recode( const char *pszSrcEncoding, const char *pszDstEncoding );
    00287
    00288     /* case insensitive find alternates */
    00289     size_t    ifind( const std::string & str, size_t pos = 0 ) const;
    00290     size_t    ifind( const char * s, size_t pos = 0 ) const;
    00291     CPLString &toupper( void );
    00292     CPLString &tolower( void );
    00293 };
    00294
    00295 CPLString CPLOPrintf(const char *pszFormat, ... ) CPL_PRINT_FUNC_FORMAT (1, 2);
    00296 CPLString CPLOvPrintf(const char *pszFormat, va_list args);
    00297
    00298 /* -------------------------------------------------------------------- */
    00299 /*      URL processing functions, here since they depend on CPLString.  */
    00300 /* -------------------------------------------------------------------- */
    00301 CPLString CPL_DLL CPLURLGetValue(const char* pszURL, const char* pszKey);
    00302 CPLString CPL_DLL CPLURLAddKVP(const char* pszURL, const char* pszKey,
    00303                                const char* pszValue);
    00304
    00305 /************************************************************************/
    00306 /*                            CPLStringList                             */
    00307 /************************************************************************/
    00308
    00310 class CPL_DLL CPLStringList
    00311 {
    00312     char **papszList;
    00313     mutable int nCount;
    00314     mutable int nAllocation;
    00315     int    bOwnList;
    00316     int    bIsSorted;
    00317
    00318     void   Initialize();
    00319     void   MakeOurOwnCopy();
    00320     void   EnsureAllocation( int nMaxLength );
    00321     int    FindSortedInsertionPoint( const char *pszLine );
    00322
    00323   public:
    00324     CPLStringList();
    00325     CPLStringList( char **papszList, int bTakeOwnership=TRUE );
    00326     CPLStringList( const CPLStringList& oOther );
    00327     ~CPLStringList();
    00328
    00329     CPLStringList &Clear();
    00330
    00331     int    size() const { return Count(); }
    00332     int    Count() const;
    00333
    00334     CPLStringList &AddString( const char *pszNewString );
    00335     CPLStringList &AddStringDirectly( char *pszNewString );
    00336
    00337     CPLStringList &InsertString( int nInsertAtLineNo, const char *pszNewLine )
    00338     { return InsertStringDirectly( nInsertAtLineNo, CPLStrdup(pszNewLine) ); }
    00339     CPLStringList &InsertStringDirectly( int nInsertAtLineNo, char *pszNewLine);
    00340
    00341 //    CPLStringList &InsertStrings( int nInsertAtLineNo, char **papszNewLines );
    00342 //    CPLStringList &RemoveStrings( int nFirstLineToDelete, int nNumToRemove=1 );
    00343
    00344     int    FindString( const char *pszTarget ) const
    00345     { return CSLFindString( papszList, pszTarget ); }
    00346     int    PartialFindString( const char *pszNeedle ) const
    00347     { return CSLPartialFindString( papszList, pszNeedle ); }
    00348
    00349     int    FindName( const char *pszName ) const;
    00350     int    FetchBoolean( const char *pszKey, int bDefault ) const;
    00351     const char *FetchNameValue( const char *pszKey ) const;
    00352     const char *FetchNameValueDef( const char *pszKey, const char *pszDefault ) const;
    00353     CPLStringList &AddNameValue( const char *pszKey, const char *pszValue );
    00354     CPLStringList &SetNameValue( const char *pszKey, const char *pszValue );
    00355
    00356     CPLStringList &Assign( char **papszListIn, int bTakeOwnership=TRUE );
    00357     CPLStringList &operator=(char **papszListIn) { return Assign( papszListIn, TRUE ); }
    00358     CPLStringList &operator=(const CPLStringList& oOther);
    00359
    00360     char * operator[](int i);
    00361     char * operator[](size_t i) { return (*this)[(int)i]; }
    00362     const char * operator[](int i) const;
    00363     const char * operator[](size_t i) const { return (*this)[(int)i]; }
    00364
    00365     char **List() { return papszList; }
    00366     char **StealList();
    00367
    00368     CPLStringList &Sort();
    00369     int    IsSorted() const { return bIsSorted; }
    00370
    00371     operator char**(void) { return List(); }
    00372 };
    00373
    00374 #endif /* def __cplusplus && !CPL_SUPRESS_CPLUSPLUS */
    00375
    00376 #endif /* _CPL_STRING_H_INCLUDED */

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