LCOV - code coverage report
Current view: top level - port - cpl_string.h (source / functions) Hit Total Coverage
Test: gdal_filtered.info Lines: 107 113 94.7 %
Date: 2025-03-28 11:40:40 Functions: 47 48 97.9 %

          Line data    Source code
       1             : /**********************************************************************
       2             :  *
       3             :  * Name:     cpl_string.h
       4             :  * Project:  CPL - Common Portability Library
       5             :  * Purpose:  String and StringList functions.
       6             :  * Author:   Daniel Morissette, dmorissette@mapgears.com
       7             :  *
       8             :  **********************************************************************
       9             :  * Copyright (c) 1998, Daniel Morissette
      10             :  * Copyright (c) 2008-2014, Even Rouault <even dot rouault at spatialys.com>
      11             :  *
      12             :  * SPDX-License-Identifier: MIT
      13             :  ****************************************************************************/
      14             : 
      15             : #ifndef CPL_STRING_H_INCLUDED
      16             : #define CPL_STRING_H_INCLUDED
      17             : 
      18             : #include "cpl_error.h"
      19             : #include "cpl_conv.h"
      20             : #include "cpl_vsi.h"
      21             : 
      22             : #include <stdbool.h>
      23             : 
      24             : /**
      25             :  * \file cpl_string.h
      26             :  *
      27             :  * Various convenience functions for working with strings and string lists.
      28             :  *
      29             :  * A StringList is just an array of strings with the last pointer being
      30             :  * NULL.  An empty StringList may be either a NULL pointer, or a pointer to
      31             :  * a pointer memory location with a NULL value.
      32             :  *
      33             :  * A common convention for StringLists is to use them to store name/value
      34             :  * lists.  In this case the contents are treated like a dictionary of
      35             :  * name/value pairs.  The actual data is formatted with each string having
      36             :  * the format "<name>:<value>" (though "=" is also an acceptable separator).
      37             :  * A number of the functions in the file operate on name/value style
      38             :  * string lists (such as CSLSetNameValue(), and CSLFetchNameValue()).
      39             :  *
      40             :  * To some extent the CPLStringList C++ class can be used to abstract
      41             :  * managing string lists a bit but still be able to return them from C
      42             :  * functions.
      43             :  *
      44             :  */
      45             : 
      46             : CPL_C_START
      47             : 
      48             : char CPL_DLL **CSLAddString(char **papszStrList,
      49             :                             const char *pszNewString) CPL_WARN_UNUSED_RESULT;
      50             : char CPL_DLL **
      51             : CSLAddStringMayFail(char **papszStrList,
      52             :                     const char *pszNewString) CPL_WARN_UNUSED_RESULT;
      53             : int CPL_DLL CSLCount(CSLConstList papszStrList);
      54             : const char CPL_DLL *CSLGetField(CSLConstList, int);
      55             : void CPL_DLL CPL_STDCALL CSLDestroy(char **papszStrList);
      56             : char CPL_DLL **CSLDuplicate(CSLConstList papszStrList) CPL_WARN_UNUSED_RESULT;
      57             : char CPL_DLL **CSLMerge(char **papszOrig,
      58             :                         CSLConstList papszOverride) CPL_WARN_UNUSED_RESULT;
      59             : 
      60             : char CPL_DLL **CSLTokenizeString(const char *pszString) CPL_WARN_UNUSED_RESULT;
      61             : char CPL_DLL **
      62             : CSLTokenizeStringComplex(const char *pszString, const char *pszDelimiter,
      63             :                          int bHonourStrings,
      64             :                          int bAllowEmptyTokens) CPL_WARN_UNUSED_RESULT;
      65             : char CPL_DLL **CSLTokenizeString2(const char *pszString,
      66             :                                   const char *pszDelimiter,
      67             :                                   int nCSLTFlags) CPL_WARN_UNUSED_RESULT;
      68             : 
      69             : /** Flag for CSLTokenizeString2() to honour strings */
      70             : #define CSLT_HONOURSTRINGS 0x0001
      71             : /** Flag for CSLTokenizeString2() to allow empty tokens */
      72             : #define CSLT_ALLOWEMPTYTOKENS 0x0002
      73             : /** Flag for CSLTokenizeString2() to preserve quotes */
      74             : #define CSLT_PRESERVEQUOTES 0x0004
      75             : /** Flag for CSLTokenizeString2() to preserve escape characters */
      76             : #define CSLT_PRESERVEESCAPES 0x0008
      77             : /** Flag for CSLTokenizeString2() to strip leading spaces */
      78             : #define CSLT_STRIPLEADSPACES 0x0010
      79             : /** Flag for CSLTokenizeString2() to strip trailaing spaces */
      80             : #define CSLT_STRIPENDSPACES 0x0020
      81             : 
      82             : int CPL_DLL CSLPrint(CSLConstList papszStrList, FILE *fpOut);
      83             : char CPL_DLL **CSLLoad(const char *pszFname) CPL_WARN_UNUSED_RESULT;
      84             : char CPL_DLL **CSLLoad2(const char *pszFname, int nMaxLines, int nMaxCols,
      85             :                         CSLConstList papszOptions) CPL_WARN_UNUSED_RESULT;
      86             : int CPL_DLL CSLSave(CSLConstList papszStrList, const char *pszFname);
      87             : 
      88             : char CPL_DLL **
      89             : CSLInsertStrings(char **papszStrList, int nInsertAtLineNo,
      90             :                  CSLConstList papszNewLines) CPL_WARN_UNUSED_RESULT;
      91             : char CPL_DLL **CSLInsertString(char **papszStrList, int nInsertAtLineNo,
      92             :                                const char *pszNewLine) CPL_WARN_UNUSED_RESULT;
      93             : char CPL_DLL **
      94             : CSLRemoveStrings(char **papszStrList, int nFirstLineToDelete, int nNumToRemove,
      95             :                  char ***ppapszRetStrings) CPL_WARN_UNUSED_RESULT;
      96             : int CPL_DLL CSLFindString(CSLConstList papszList, const char *pszTarget);
      97             : int CPL_DLL CSLFindStringCaseSensitive(CSLConstList papszList,
      98             :                                        const char *pszTarget);
      99             : int CPL_DLL CSLPartialFindString(CSLConstList papszHaystack,
     100             :                                  const char *pszNeedle);
     101             : int CPL_DLL CSLFindName(CSLConstList papszStrList, const char *pszName);
     102             : int CPL_DLL CSLFetchBoolean(CSLConstList papszStrList, const char *pszKey,
     103             :                             int bDefault);
     104             : 
     105             : /* TODO: Deprecate CSLTestBoolean.  Remove in GDAL 3.x. */
     106             : int CPL_DLL CSLTestBoolean(const char *pszValue);
     107             : /* Do not use CPLTestBoolean in C++ code.  Use CPLTestBool. */
     108             : int CPL_DLL CPLTestBoolean(const char *pszValue);
     109             : 
     110             : bool CPL_DLL CPLTestBool(const char *pszValue);
     111             : bool CPL_DLL CPLFetchBool(CSLConstList papszStrList, const char *pszKey,
     112             :                           bool bDefault);
     113             : 
     114             : CPLErr CPL_DLL CPLParseMemorySize(const char *pszValue, GIntBig *pnValue,
     115             :                                   bool *pbUnitSpecified);
     116             : 
     117             : const char CPL_DLL *CPLParseNameValue(const char *pszNameValue, char **ppszKey);
     118             : const char CPL_DLL *CPLParseNameValueSep(const char *pszNameValue,
     119             :                                          char **ppszKey, char chSep);
     120             : 
     121             : const char CPL_DLL *CSLFetchNameValue(CSLConstList papszStrList,
     122             :                                       const char *pszName);
     123             : const char CPL_DLL *CSLFetchNameValueDef(CSLConstList papszStrList,
     124             :                                          const char *pszName,
     125             :                                          const char *pszDefault);
     126             : char CPL_DLL **CSLFetchNameValueMultiple(CSLConstList papszStrList,
     127             :                                          const char *pszName);
     128             : char CPL_DLL **CSLAddNameValue(char **papszStrList, const char *pszName,
     129             :                                const char *pszValue) CPL_WARN_UNUSED_RESULT;
     130             : char CPL_DLL **CSLSetNameValue(char **papszStrList, const char *pszName,
     131             :                                const char *pszValue) CPL_WARN_UNUSED_RESULT;
     132             : void CPL_DLL CSLSetNameValueSeparator(char **papszStrList,
     133             :                                       const char *pszSeparator);
     134             : 
     135             : char CPL_DLL **CSLParseCommandLine(const char *pszCommandLine);
     136             : 
     137             : /** Scheme for CPLEscapeString()/CPLUnescapeString() for backlash quoting */
     138             : #define CPLES_BackslashQuotable 0
     139             : /** Scheme for CPLEscapeString()/CPLUnescapeString() for XML */
     140             : #define CPLES_XML 1
     141             : /** Scheme for CPLEscapeString()/CPLUnescapeString() for URL */
     142             : #define CPLES_URL 2
     143             : /** Scheme for CPLEscapeString()/CPLUnescapeString() for SQL */
     144             : #define CPLES_SQL 3
     145             : /** Scheme for CPLEscapeString()/CPLUnescapeString() for CSV */
     146             : #define CPLES_CSV 4
     147             : /** Scheme for CPLEscapeString()/CPLUnescapeString() for XML (preserves quotes)
     148             :  */
     149             : #define CPLES_XML_BUT_QUOTES 5
     150             : /** Scheme for CPLEscapeString()/CPLUnescapeString() for CSV (forced quoting) */
     151             : #define CPLES_CSV_FORCE_QUOTING 6
     152             : /** Scheme for CPLEscapeString()/CPLUnescapeString() for SQL identifiers */
     153             : #define CPLES_SQLI 7
     154             : 
     155             : char CPL_DLL *CPLEscapeString(const char *pszString, int nLength,
     156             :                               int nScheme) CPL_WARN_UNUSED_RESULT;
     157             : char CPL_DLL *CPLUnescapeString(const char *pszString, int *pnLength,
     158             :                                 int nScheme) CPL_WARN_UNUSED_RESULT;
     159             : 
     160             : char CPL_DLL *CPLBinaryToHex(int nBytes,
     161             :                              const GByte *pabyData) CPL_WARN_UNUSED_RESULT;
     162             : GByte CPL_DLL *CPLHexToBinary(const char *pszHex,
     163             :                               int *pnBytes) CPL_WARN_UNUSED_RESULT;
     164             : 
     165             : char CPL_DLL *CPLBase64Encode(int nBytes,
     166             :                               const GByte *pabyData) CPL_WARN_UNUSED_RESULT;
     167             : int CPL_DLL CPLBase64DecodeInPlace(GByte *pszBase64) CPL_WARN_UNUSED_RESULT;
     168             : 
     169             : /** Type of value */
     170             : typedef enum
     171             : {
     172             :     CPL_VALUE_STRING, /**< String */
     173             :     CPL_VALUE_REAL,   /**< Real number */
     174             :     CPL_VALUE_INTEGER /**< Integer */
     175             : } CPLValueType;
     176             : 
     177             : CPLValueType CPL_DLL CPLGetValueType(const char *pszValue);
     178             : 
     179             : int CPL_DLL CPLToupper(int c);
     180             : int CPL_DLL CPLTolower(int c);
     181             : 
     182             : size_t CPL_DLL CPLStrlcpy(char *pszDest, const char *pszSrc, size_t nDestSize);
     183             : size_t CPL_DLL CPLStrlcat(char *pszDest, const char *pszSrc, size_t nDestSize);
     184             : size_t CPL_DLL CPLStrnlen(const char *pszStr, size_t nMaxLen);
     185             : 
     186             : /* -------------------------------------------------------------------- */
     187             : /*      Locale independent formatting functions.                        */
     188             : /* -------------------------------------------------------------------- */
     189             : int CPL_DLL CPLvsnprintf(char *str, size_t size,
     190             :                          CPL_FORMAT_STRING(const char *fmt), va_list args)
     191             :     CPL_PRINT_FUNC_FORMAT(3, 0);
     192             : 
     193             : /* ALIAS_CPLSNPRINTF_AS_SNPRINTF might be defined to enable GCC 7 */
     194             : /* -Wformat-truncation= warnings, but shouldn't be set for normal use */
     195             : #if defined(ALIAS_CPLSNPRINTF_AS_SNPRINTF)
     196             : #define CPLsnprintf snprintf
     197             : #else
     198             : int CPL_DLL CPLsnprintf(char *str, size_t size,
     199             :                         CPL_FORMAT_STRING(const char *fmt), ...)
     200             :     CPL_PRINT_FUNC_FORMAT(3, 4);
     201             : #endif
     202             : 
     203             : /*! @cond Doxygen_Suppress */
     204             : #if defined(GDAL_COMPILATION) && !defined(DONT_DEPRECATE_SPRINTF)
     205             : int CPL_DLL CPLsprintf(char *str, CPL_FORMAT_STRING(const char *fmt), ...)
     206             :     CPL_PRINT_FUNC_FORMAT(2, 3) CPL_WARN_DEPRECATED("Use CPLsnprintf instead");
     207             : #else
     208             : int CPL_DLL CPLsprintf(char *str, CPL_FORMAT_STRING(const char *fmt), ...)
     209             :     CPL_PRINT_FUNC_FORMAT(2, 3);
     210             : #endif
     211             : /*! @endcond */
     212             : int CPL_DLL CPLprintf(CPL_FORMAT_STRING(const char *fmt), ...)
     213             :     CPL_PRINT_FUNC_FORMAT(1, 2);
     214             : 
     215             : /* For some reason Doxygen_Suppress is needed to avoid warning. Not sure why */
     216             : /*! @cond Doxygen_Suppress */
     217             : /* caution: only works with limited number of formats */
     218             : int CPL_DLL CPLsscanf(const char *str, CPL_SCANF_FORMAT_STRING(const char *fmt),
     219             :                       ...) CPL_SCAN_FUNC_FORMAT(2, 3);
     220             : /*! @endcond */
     221             : 
     222             : const char CPL_DLL *CPLSPrintf(CPL_FORMAT_STRING(const char *fmt), ...)
     223             :     CPL_PRINT_FUNC_FORMAT(1, 2) CPL_WARN_UNUSED_RESULT;
     224             : char CPL_DLL **CSLAppendPrintf(char **papszStrList,
     225             :                                CPL_FORMAT_STRING(const char *fmt), ...)
     226             :     CPL_PRINT_FUNC_FORMAT(2, 3) CPL_WARN_UNUSED_RESULT;
     227             : int CPL_DLL CPLVASPrintf(char **buf, CPL_FORMAT_STRING(const char *fmt),
     228             :                          va_list args) CPL_PRINT_FUNC_FORMAT(2, 0);
     229             : 
     230             : /* -------------------------------------------------------------------- */
     231             : /*      RFC 23 character set conversion/recoding API (cpl_recode.cpp).  */
     232             : /* -------------------------------------------------------------------- */
     233             : /** Encoding of the current locale */
     234             : #define CPL_ENC_LOCALE ""
     235             : /** UTF-8 encoding */
     236             : #define CPL_ENC_UTF8 "UTF-8"
     237             : /** UTF-16 encoding */
     238             : #define CPL_ENC_UTF16 "UTF-16"
     239             : /** UCS-2 encoding */
     240             : #define CPL_ENC_UCS2 "UCS-2"
     241             : /** UCS-4 encoding */
     242             : #define CPL_ENC_UCS4 "UCS-4"
     243             : /** ASCII encoding */
     244             : #define CPL_ENC_ASCII "ASCII"
     245             : /** ISO-8859-1 (LATIN1) encoding */
     246             : #define CPL_ENC_ISO8859_1 "ISO-8859-1"
     247             : 
     248             : int CPL_DLL CPLEncodingCharSize(const char *pszEncoding);
     249             : /*! @cond Doxygen_Suppress */
     250             : void CPL_DLL CPLClearRecodeWarningFlags(void);
     251             : /*! @endcond */
     252             : char CPL_DLL *CPLRecode(const char *pszSource, const char *pszSrcEncoding,
     253             :                         const char *pszDstEncoding)
     254             :     CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
     255             : char CPL_DLL *
     256             : CPLRecodeFromWChar(const wchar_t *pwszSource, const char *pszSrcEncoding,
     257             :                    const char *pszDstEncoding) CPL_WARN_UNUSED_RESULT;
     258             : wchar_t CPL_DLL *
     259             : CPLRecodeToWChar(const char *pszSource, const char *pszSrcEncoding,
     260             :                  const char *pszDstEncoding) CPL_WARN_UNUSED_RESULT;
     261             : int CPL_DLL CPLIsUTF8(const char *pabyData, int nLen);
     262             : bool CPL_DLL CPLIsASCII(const char *pabyData, size_t nLen);
     263             : char CPL_DLL *CPLForceToASCII(const char *pabyData, int nLen,
     264             :                               char chReplacementChar) CPL_WARN_UNUSED_RESULT;
     265             : char CPL_DLL *CPLUTF8ForceToASCII(const char *pszStr, char chReplacementChar)
     266             :     CPL_WARN_UNUSED_RESULT;
     267             : int CPL_DLL CPLStrlenUTF8(const char *pszUTF8Str);
     268             : int CPL_DLL CPLCanRecode(const char *pszTestStr, const char *pszSrcEncoding,
     269             :                          const char *pszDstEncoding) CPL_WARN_UNUSED_RESULT;
     270             : CPL_C_END
     271             : 
     272             : #if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS)
     273             : 
     274             : extern "C++"
     275             : {
     276             :     std::string CPL_DLL CPLRemoveSQLComments(const std::string &osInput);
     277             : }
     278             : 
     279             : #endif
     280             : 
     281             : /************************************************************************/
     282             : /*                              CPLString                               */
     283             : /************************************************************************/
     284             : 
     285             : #if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS)
     286             : 
     287             : extern "C++"
     288             : {
     289             : #ifndef DOXYGEN_SKIP
     290             : #include <string>
     291             : #include <vector>
     292             : #endif
     293             : 
     294             : // VC++ implicitly applies __declspec(dllexport) to template base classes
     295             : // of classes marked with __declspec(dllexport).
     296             : // Hence, if marked with CPL_DLL, VC++ would export symbols for the
     297             : // specialization of std::basic_string<char>, since it is a base class of
     298             : // CPLString. As a result, if an application linked both gdal.dll and a static
     299             : // library that (implicitly) instantiates std::string (almost all do!), then the
     300             : // linker would emit an error concerning duplicate symbols for std::string. The
     301             : // least intrusive solution is to not mark the whole class with
     302             : // __declspec(dllexport) for VC++, but only its non-inline methods.
     303             : #ifdef _MSC_VER
     304             : #define CPLSTRING_CLASS_DLL
     305             : #define CPLSTRING_METHOD_DLL CPL_DLL
     306             : #else
     307             : /*! @cond Doxygen_Suppress */
     308             : #define CPLSTRING_CLASS_DLL CPL_DLL
     309             : #define CPLSTRING_METHOD_DLL
     310             : /*! @endcond */
     311             : #endif
     312             : 
     313             :     //! Convenient string class based on std::string.
     314          20 :     class CPLSTRING_CLASS_DLL CPLString : public std::string
     315             :     {
     316             :       public:
     317             :         /** Constructor */
     318    14536015 :         CPLString(void)
     319    14536015 :         {
     320    14535895 :         }
     321             : 
     322             :         /** Constructor */
     323             :         // cppcheck-suppress noExplicitConstructor
     324     3995480 :         CPLString(const std::string &oStr) : std::string(oStr)
     325             :         {
     326     3995480 :         }
     327             : 
     328             :         /** Constructor */
     329             :         // cppcheck-suppress noExplicitConstructor
     330     7301126 :         CPLString(const char *pszStr) : std::string(pszStr)
     331             :         {
     332     7300986 :         }
     333             : 
     334             :         /** Constructor */
     335       57966 :         CPLString(const char *pszStr, size_t n) : std::string(pszStr, n)
     336             :         {
     337       57957 :         }
     338             : 
     339             :         /** Return string as zero terminated character array */
     340    21961751 :         operator const char *(void) const
     341             :         {
     342    21961751 :             return c_str();
     343             :         }
     344             : 
     345             :         /** Return character at specified index */
     346    46103724 :         char &operator[](std::string::size_type i)
     347             :         {
     348    46103724 :             return std::string::operator[](i);
     349             :         }
     350             : 
     351             :         /** Return character at specified index */
     352      263689 :         const char &operator[](std::string::size_type i) const
     353             :         {
     354      263689 :             return std::string::operator[](i);
     355             :         }
     356             : 
     357             :         /** Return character at specified index */
     358      120410 :         char &operator[](int i)
     359             :         {
     360             :             return std::string::operator[](
     361      120410 :                 static_cast<std::string::size_type>(i));
     362             :         }
     363             : 
     364             :         /** Return character at specified index */
     365       21250 :         const char &operator[](int i) const
     366             :         {
     367             :             return std::string::operator[](
     368       21250 :                 static_cast<std::string::size_type>(i));
     369             :         }
     370             : 
     371             :         /** Clear the string */
     372       23760 :         void Clear()
     373             :         {
     374       23760 :             resize(0);
     375       23760 :         }
     376             : 
     377             :         /** Assign specified string and take ownership of it (assumed to be
     378             :          * allocated with CPLMalloc()). NULL can be safely passed to clear the
     379             :          * string. */
     380           0 :         void Seize(char *pszValue)
     381             :         {
     382           0 :             if (pszValue == nullptr)
     383           0 :                 Clear();
     384             :             else
     385             :             {
     386           0 :                 *this = pszValue;
     387           0 :                 CPLFree(pszValue);
     388             :             }
     389           0 :         }
     390             : 
     391             :         /* There seems to be a bug in the way the compiler count indices...
     392             :          * Should be CPL_PRINT_FUNC_FORMAT (1, 2) */
     393             :         CPLSTRING_METHOD_DLL CPLString &
     394             :         Printf(CPL_FORMAT_STRING(const char *pszFormat), ...)
     395             :             CPL_PRINT_FUNC_FORMAT(2, 3);
     396             :         CPLSTRING_METHOD_DLL CPLString &
     397             :         vPrintf(CPL_FORMAT_STRING(const char *pszFormat), va_list args)
     398             :             CPL_PRINT_FUNC_FORMAT(2, 0);
     399             :         CPLSTRING_METHOD_DLL CPLString &
     400             :         FormatC(double dfValue, const char *pszFormat = nullptr);
     401             :         CPLSTRING_METHOD_DLL CPLString &Trim();
     402             :         CPLSTRING_METHOD_DLL CPLString &Recode(const char *pszSrcEncoding,
     403             :                                                const char *pszDstEncoding);
     404             :         CPLSTRING_METHOD_DLL CPLString &replaceAll(const std::string &osBefore,
     405             :                                                    const std::string &osAfter);
     406             :         CPLSTRING_METHOD_DLL CPLString &replaceAll(const std::string &osBefore,
     407             :                                                    char chAfter);
     408             :         CPLSTRING_METHOD_DLL CPLString &replaceAll(char chBefore,
     409             :                                                    const std::string &osAfter);
     410             :         CPLSTRING_METHOD_DLL CPLString &replaceAll(char chBefore, char chAfter);
     411             : 
     412             :         /* case insensitive find alternates */
     413             :         CPLSTRING_METHOD_DLL size_t ifind(const std::string &str,
     414             :                                           size_t pos = 0) const;
     415             :         CPLSTRING_METHOD_DLL size_t ifind(const char *s, size_t pos = 0) const;
     416             :         CPLSTRING_METHOD_DLL CPLString &toupper(void);
     417             :         CPLSTRING_METHOD_DLL CPLString &tolower(void);
     418             : 
     419             :         CPLSTRING_METHOD_DLL bool endsWith(const std::string &osStr) const;
     420             :     };
     421             : 
     422             : #undef CPLSTRING_CLASS_DLL
     423             : #undef CPLSTRING_METHOD_DLL
     424             : 
     425             :     CPLString CPL_DLL CPLOPrintf(CPL_FORMAT_STRING(const char *pszFormat), ...)
     426             :         CPL_PRINT_FUNC_FORMAT(1, 2);
     427             :     CPLString CPL_DLL CPLOvPrintf(CPL_FORMAT_STRING(const char *pszFormat),
     428             :                                   va_list args) CPL_PRINT_FUNC_FORMAT(1, 0);
     429             :     CPLString CPL_DLL CPLQuotedSQLIdentifier(const char *pszIdent);
     430             : 
     431             :     /* -------------------------------------------------------------------- */
     432             :     /*      URL processing functions, here since they depend on CPLString.  */
     433             :     /* -------------------------------------------------------------------- */
     434             :     CPLString CPL_DLL CPLURLGetValue(const char *pszURL, const char *pszKey);
     435             :     CPLString CPL_DLL CPLURLAddKVP(const char *pszURL, const char *pszKey,
     436             :                                    const char *pszValue);
     437             : 
     438             :     /************************************************************************/
     439             :     /*                            CPLStringList                             */
     440             :     /************************************************************************/
     441             : 
     442             :     //! String list class designed around our use of C "char**" string lists.
     443     9170860 :     class CPL_DLL CPLStringList
     444             :     {
     445             :         char **papszList = nullptr;
     446             :         mutable int nCount = 0;
     447             :         mutable int nAllocation = 0;
     448             :         bool bOwnList = false;
     449             :         bool bIsSorted = false;
     450             : 
     451             :         bool MakeOurOwnCopy();
     452             :         bool EnsureAllocation(int nMaxLength);
     453             :         int FindSortedInsertionPoint(const char *pszLine);
     454             : 
     455             :       public:
     456             :         CPLStringList();
     457             :         explicit CPLStringList(char **papszList, int bTakeOwnership = TRUE);
     458             :         explicit CPLStringList(CSLConstList papszList);
     459             :         explicit CPLStringList(const std::vector<std::string> &aosList);
     460             :         explicit CPLStringList(std::initializer_list<const char *> oInitList);
     461             :         CPLStringList(const CPLStringList &oOther);
     462             :         CPLStringList(CPLStringList &&oOther);
     463             :         ~CPLStringList();
     464             : 
     465             :         static const CPLStringList BoundToConstList(CSLConstList papszList);
     466             : 
     467             :         CPLStringList &Clear();
     468             : 
     469             :         /** Clear the list */
     470           1 :         inline void clear()
     471             :         {
     472           1 :             Clear();
     473           1 :         }
     474             : 
     475             :         /** Return size of list */
     476      920083 :         int size() const
     477             :         {
     478      920083 :             return Count();
     479             :         }
     480             : 
     481             :         int Count() const;
     482             : 
     483             :         /** Return whether the list is empty. */
     484       29623 :         bool empty() const
     485             :         {
     486       29623 :             return Count() == 0;
     487             :         }
     488             : 
     489             :         CPLStringList &AddString(const char *pszNewString);
     490             :         CPLStringList &AddString(const std::string &newString);
     491             :         CPLStringList &AddStringDirectly(char *pszNewString);
     492             : 
     493             :         /** Add a string to the list */
     494         140 :         void push_back(const char *pszNewString)
     495             :         {
     496         140 :             AddString(pszNewString);
     497         140 :         }
     498             : 
     499             :         /** Add a string to the list */
     500        1349 :         void push_back(const std::string &osStr)
     501             :         {
     502        1349 :             AddString(osStr.c_str());
     503        1349 :         }
     504             : 
     505         218 :         CPLStringList &InsertString(int nInsertAtLineNo, const char *pszNewLine)
     506             :         {
     507         218 :             return InsertStringDirectly(nInsertAtLineNo, CPLStrdup(pszNewLine));
     508             :         }
     509             : 
     510             :         CPLStringList &InsertStringDirectly(int nInsertAtLineNo,
     511             :                                             char *pszNewLine);
     512             : 
     513             :         // CPLStringList &InsertStrings( int nInsertAtLineNo, char
     514             :         // **papszNewLines ); CPLStringList &RemoveStrings( int
     515             :         // nFirstLineToDelete, int nNumToRemove=1 );
     516             : 
     517             :         /** Return index of pszTarget in the list, or -1 */
     518       16461 :         int FindString(const char *pszTarget) const
     519             :         {
     520       16461 :             return CSLFindString(papszList, pszTarget);
     521             :         }
     522             : 
     523             :         /** Return index of pszTarget in the list (using partial search), or -1
     524             :          */
     525             :         int PartialFindString(const char *pszNeedle) const
     526             :         {
     527             :             return CSLPartialFindString(papszList, pszNeedle);
     528             :         }
     529             : 
     530             :         int FindName(const char *pszName) const;
     531             :         bool FetchBool(const char *pszKey, bool bDefault) const;
     532             :         // Deprecated.
     533             :         int FetchBoolean(const char *pszKey, int bDefault) const;
     534             :         const char *FetchNameValue(const char *pszKey) const;
     535             :         const char *FetchNameValueDef(const char *pszKey,
     536             :                                       const char *pszDefault) const;
     537             :         CPLStringList &AddNameValue(const char *pszKey, const char *pszValue);
     538             :         CPLStringList &SetNameValue(const char *pszKey, const char *pszValue);
     539             : 
     540             :         CPLStringList &Assign(char **papszListIn, int bTakeOwnership = TRUE);
     541             : 
     542             :         /** Assignment operator */
     543       34748 :         CPLStringList &operator=(char **papszListIn)
     544             :         {
     545       34748 :             return Assign(papszListIn, TRUE);
     546             :         }
     547             : 
     548             :         /** Assignment operator */
     549             :         CPLStringList &operator=(const CPLStringList &oOther);
     550             :         /** Assignment operator */
     551             :         CPLStringList &operator=(CSLConstList papszListIn);
     552             :         /** Move assignment operator */
     553             :         CPLStringList &operator=(CPLStringList &&oOther);
     554             : 
     555             :         /** Return string at specified index */
     556             :         char *operator[](int i);
     557             : 
     558             :         /** Return string at specified index */
     559        1202 :         char *operator[](size_t i)
     560             :         {
     561        1202 :             return (*this)[static_cast<int>(i)];
     562             :         }
     563             : 
     564             :         /** Return string at specified index */
     565             :         const char *operator[](int i) const;
     566             : 
     567             :         /** Return string at specified index */
     568         320 :         const char *operator[](size_t i) const
     569             :         {
     570         320 :             return (*this)[static_cast<int>(i)];
     571             :         }
     572             : 
     573             :         /** Return value corresponding to pszKey, or nullptr */
     574        4196 :         const char *operator[](const char *pszKey) const
     575             :         {
     576        4196 :             return FetchNameValue(pszKey);
     577             :         }
     578             : 
     579             :         /** Return first element */
     580             :         inline const char *front() const
     581             :         {
     582             :             return papszList[0];
     583             :         }
     584             : 
     585             :         /** Return last element */
     586      453073 :         inline const char *back() const
     587             :         {
     588      453073 :             return papszList[size() - 1];
     589             :         }
     590             : 
     591             :         /** begin() implementation */
     592        5716 :         const char *const *begin() const
     593             :         {
     594        5716 :             return papszList ? &papszList[0] : nullptr;
     595             :         }
     596             : 
     597             :         /** end() implementation */
     598        5716 :         const char *const *end() const
     599             :         {
     600        5716 :             return papszList ? &papszList[size()] : nullptr;
     601             :         }
     602             : 
     603             :         /** Return list. Ownership remains to the object */
     604     2730334 :         char **List()
     605             :         {
     606     2730334 :             return papszList;
     607             :         }
     608             : 
     609             :         /** Return list. Ownership remains to the object */
     610     1841611 :         CSLConstList List() const
     611             :         {
     612     1841611 :             return papszList;
     613             :         }
     614             : 
     615             :         char **StealList();
     616             : 
     617             :         CPLStringList &Sort();
     618             : 
     619             :         /** Returns whether the list is sorted */
     620    18559891 :         int IsSorted() const
     621             :         {
     622    18559891 :             return bIsSorted;
     623             :         }
     624             : 
     625             :         /** Return lists */
     626        1463 :         operator char **(void)
     627             :         {
     628        1463 :             return List();
     629             :         }
     630             : 
     631             :         /** Return lists */
     632         731 :         operator CSLConstList(void) const
     633             :         {
     634         731 :             return List();
     635             :         }
     636             : 
     637             :         /** Return the list as a vector of strings */
     638         883 :         operator std::vector<std::string>(void) const
     639             :         {
     640         883 :             return std::vector<std::string>{begin(), end()};
     641             :         }
     642             :     };
     643             : 
     644             : #ifdef GDAL_COMPILATION
     645             : 
     646             : #include <iterator>  // For std::input_iterator_tag
     647             : #include <memory>
     648             : #include <utility>  // For std::pair
     649             : 
     650             :     /*! @cond Doxygen_Suppress */
     651             :     struct CPL_DLL CSLDestroyReleaser
     652             :     {
     653             :         void operator()(char **papszStr) const
     654             :         {
     655             :             CSLDestroy(papszStr);
     656             :         }
     657             :     };
     658             : 
     659             :     /*! @endcond */
     660             : 
     661             :     /** Unique pointer type to use with CSL functions returning a char** */
     662             :     using CSLUniquePtr = std::unique_ptr<char *, CSLDestroyReleaser>;
     663             : 
     664             :     /** Unique pointer type to use with functions returning a char* to release
     665             :      * with VSIFree */
     666             :     using CPLCharUniquePtr = std::unique_ptr<char, VSIFreeReleaser>;
     667             : 
     668             :     namespace cpl
     669             :     {
     670             : 
     671             :     /*! @cond Doxygen_Suppress */
     672             :     /** Iterator for a CSLConstList */
     673             :     struct CPL_DLL CSLIterator
     674             :     {
     675             :         using iterator_category = std::input_iterator_tag;
     676             :         using difference_type = std::ptrdiff_t;
     677             :         using value_type = const char *;
     678             :         using pointer = value_type *;
     679             :         using reference = value_type &;
     680             : 
     681             :         CSLConstList m_papszList = nullptr;
     682             :         bool m_bAtEnd = false;
     683             : 
     684      137070 :         inline const char *operator*() const
     685             :         {
     686      137070 :             return *m_papszList;
     687             :         }
     688             : 
     689      136862 :         inline CSLIterator &operator++()
     690             :         {
     691      136862 :             if (m_papszList)
     692      136862 :                 ++m_papszList;
     693      136862 :             return *this;
     694             :         }
     695             : 
     696             :         bool operator==(const CSLIterator &other) const;
     697             : 
     698      255416 :         inline bool operator!=(const CSLIterator &other) const
     699             :         {
     700      255416 :             return !(operator==(other));
     701             :         }
     702             :     };
     703             : 
     704             :     /*! @endcond */
     705             : 
     706             :     /** Wrapper for a CSLConstList that can be used with C++ iterators.
     707             :      *
     708             :      * @since GDAL 3.9
     709             :      */
     710             :     struct CPL_DLL CSLIteratorWrapper
     711             :     {
     712             :       public:
     713             :         /** Constructor */
     714      118565 :         inline explicit CSLIteratorWrapper(CSLConstList papszList)
     715      118565 :             : m_papszList(papszList)
     716             :         {
     717      118565 :         }
     718             : 
     719             :         /** Get the begin of the list */
     720      118565 :         inline CSLIterator begin() const
     721             :         {
     722      118565 :             return {m_papszList, false};
     723             :         }
     724             : 
     725             :         /** Get the end of the list */
     726      118566 :         inline CSLIterator end() const
     727             :         {
     728      118566 :             return {m_papszList, true};
     729             :         }
     730             : 
     731             :       private:
     732             :         CSLConstList m_papszList;
     733             :     };
     734             : 
     735             :     /** Wraps a CSLConstList in a structure that can be used with C++ iterators.
     736             :      *
     737             :      * @since GDAL 3.9
     738             :      */
     739      118566 :     inline CSLIteratorWrapper Iterate(CSLConstList papszList)
     740             :     {
     741      118566 :         return CSLIteratorWrapper{papszList};
     742             :     }
     743             : 
     744             :     /*! @cond Doxygen_Suppress */
     745        2179 :     inline CSLIteratorWrapper Iterate(const CPLStringList &aosList)
     746             :     {
     747        2179 :         return Iterate(aosList.List());
     748             :     }
     749             : 
     750             :     /*! @endcond */
     751             : 
     752             :     /*! @cond Doxygen_Suppress */
     753             :     inline CSLIteratorWrapper Iterate(char **) = delete;
     754             : 
     755             :     /*! @endcond */
     756             : 
     757             :     /*! @cond Doxygen_Suppress */
     758             :     /** Iterator for a CSLConstList as (name, value) pairs. */
     759             :     struct CPL_DLL CSLNameValueIterator
     760             :     {
     761             :         using iterator_category = std::input_iterator_tag;
     762             :         using difference_type = std::ptrdiff_t;
     763             :         using value_type = std::pair<const char *, const char *>;
     764             :         using pointer = value_type *;
     765             :         using reference = value_type &;
     766             : 
     767             :         CSLConstList m_papszList = nullptr;
     768             :         bool m_bReturnNullKeyIfNotNameValue = false;
     769             :         std::string m_osKey{};
     770             : 
     771             :         value_type operator*();
     772             : 
     773        1264 :         inline CSLNameValueIterator &operator++()
     774             :         {
     775        1264 :             if (m_papszList)
     776        1264 :                 ++m_papszList;
     777        1264 :             return *this;
     778             :         }
     779             : 
     780        5213 :         inline bool operator==(const CSLNameValueIterator &other) const
     781             :         {
     782        5213 :             return m_papszList == other.m_papszList;
     783             :         }
     784             : 
     785        5211 :         inline bool operator!=(const CSLNameValueIterator &other) const
     786             :         {
     787        5211 :             return !(operator==(other));
     788             :         }
     789             :     };
     790             : 
     791             :     /*! @endcond */
     792             : 
     793             :     /** Wrapper for a CSLConstList that can be used with C++ iterators
     794             :      * to get (name, value) pairs.
     795             :      *
     796             :      * This can for example be used to do the following:
     797             :      * for (const auto& [name, value]: cpl::IterateNameValue(papszList)) {}
     798             :      *
     799             :      * Note that a (name, value) pair returned by dereferencing an iterator
     800             :      * is invalidated by the next iteration on the iterator.
     801             :      *
     802             :      * @since GDAL 3.9
     803             :      */
     804             :     struct CPL_DLL CSLNameValueIteratorWrapper
     805             :     {
     806             :       public:
     807             :         /** Constructor */
     808        3949 :         inline explicit CSLNameValueIteratorWrapper(
     809             :             CSLConstList papszList, bool bReturnNullKeyIfNotNameValue)
     810        3949 :             : m_papszList(papszList),
     811        3949 :               m_bReturnNullKeyIfNotNameValue(bReturnNullKeyIfNotNameValue)
     812             :         {
     813        3949 :         }
     814             : 
     815             :         /** Get the begin of the list */
     816        3949 :         inline CSLNameValueIterator begin() const
     817             :         {
     818        3949 :             return {m_papszList, m_bReturnNullKeyIfNotNameValue};
     819             :         }
     820             : 
     821             :         /** Get the end of the list */
     822             :         CSLNameValueIterator end() const;
     823             : 
     824             :       private:
     825             :         CSLConstList m_papszList;
     826             :         const bool m_bReturnNullKeyIfNotNameValue;
     827             :     };
     828             : 
     829             :     /** Wraps a CSLConstList in a structure that can be used with C++ iterators
     830             :      * to get (name, value) pairs.
     831             :      *
     832             :      * This can for example be used to do the following:
     833             :      * for (const auto& [name, value]: cpl::IterateNameValue(papszList)) {}
     834             :      *
     835             :      * Note that a (name, value) pair returned by dereferencing an iterator
     836             :      * is invalidated by the next iteration on the iterator.
     837             :      *
     838             :      * @param papszList List to iterate over.
     839             :      * @param bReturnNullKeyIfNotNameValue When this is set to true, if a string
     840             :      * contained in the list if not of the form name=value, then the value of
     841             :      * the iterator will be (nullptr, string).
     842             :      *
     843             :      * @since GDAL 3.9
     844             :      */
     845             :     inline CSLNameValueIteratorWrapper
     846        3949 :     IterateNameValue(CSLConstList papszList,
     847             :                      bool bReturnNullKeyIfNotNameValue = false)
     848             :     {
     849        3949 :         return CSLNameValueIteratorWrapper{papszList,
     850        3949 :                                            bReturnNullKeyIfNotNameValue};
     851             :     }
     852             : 
     853             :     /*! @cond Doxygen_Suppress */
     854             :     inline CSLNameValueIteratorWrapper
     855        2636 :     IterateNameValue(const CPLStringList &aosList,
     856             :                      bool bReturnNullKeyIfNotNameValue = false)
     857             :     {
     858        2636 :         return IterateNameValue(aosList.List(), bReturnNullKeyIfNotNameValue);
     859             :     }
     860             : 
     861             :     /*! @endcond */
     862             : 
     863             :     /*! @cond Doxygen_Suppress */
     864             :     inline CSLIteratorWrapper IterateNameValue(char **, bool = false) = delete;
     865             : 
     866             :     /*! @endcond */
     867             : 
     868             :     /** Converts a CSLConstList to a std::vector<std::string> */
     869          94 :     inline std::vector<std::string> ToVector(CSLConstList papszList)
     870             :     {
     871         188 :         return CPLStringList::BoundToConstList(papszList);
     872             :     }
     873             : 
     874             :     inline std::vector<std::string> ToVector(char **) = delete;
     875             : 
     876             :     }  // namespace cpl
     877             : 
     878             : #endif
     879             : 
     880             : }  // extern "C++"
     881             : 
     882             : #endif /* def __cplusplus && !CPL_SUPRESS_CPLUSPLUS */
     883             : 
     884             : #endif /* CPL_STRING_H_INCLUDED */

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