apt-pkg/contrib/strutl.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: strutl.h,v 1.22 2003/02/02 22:20:27 jgg Exp $
   4 /* ######################################################################
   5
   6    String Util - These are some useful string functions
   7
   8    _strstrip is a function to remove whitespace from the front and end
   9    of a string.
  10
  11    This source is placed in the Public Domain, do with it what you will
  12    It was originally written by Jason Gunthorpe <jgg@gpu.srv.ualberta.ca>
  13
  14    ##################################################################### */
  15                                                                         /*}}}*/
  16 #ifndef STRUTL_H
  17 #define STRUTL_H
  18
  19
  20
  21 #include <stdlib.h>
  22 #include <string>
  23 #include <cstring>
  24 #include <vector>
  25 #include <iostream>
  26 #include <time.h>
  27
  28 using std::string;
  29 using std::vector;
  30 using std::ostream;
  31
  32 #ifdef __GNUG__
  33 // Methods have a hidden this parameter that is visible to this attribute
  34 #define APT_FORMAT2 __attribute__ ((format (printf, 2, 3)))
  35 #define APT_FORMAT3 __attribute__ ((format (printf, 3, 4)))
  36 #else
  37 #define APT_FORMAT2
  38 #define APT_FORMAT3
  39 #endif
  40
  41 bool UTF8ToCodeset(const char *codeset, const string &orig, string *dest);
  42 char *_strstrip(char *String);
  43 char *_strtabexpand(char *String,size_t Len);
  44 bool ParseQuoteWord(const char *&String,string &Res);
  45 bool ParseCWord(const char *&String,string &Res);
  46 string QuoteString(const string &Str,const char *Bad);
  47 string DeQuoteString(const string &Str);
  48 string SizeToStr(double Bytes);
  49 string TimeToStr(unsigned long Sec);
  50 string Base64Encode(const string &Str);
  51 string OutputInDepth(const unsigned long Depth, const char* Separator="  ");
  52 string URItoFileName(const string &URI);
  53 string TimeRFC1123(time_t Date);
  54 bool StrToTime(const string &Val,time_t &Result);
  55 string LookupTag(const string &Message,const char *Tag,const char *Default = 0);
  56 int StringToBool(const string &Text,int Default = -1);
  57 bool ReadMessages(int Fd, vector<string> &List);
  58 bool StrToNum(const char *Str,unsigned long &Res,unsigned Len,unsigned Base = 0);
  59 bool Hex2Num(const string &Str,unsigned char *Num,unsigned int Length);
  60 bool TokSplitString(char Tok,char *Input,char **List,
  61                     unsigned long ListMax);
  62 vector<string> ExplodeString(string const &haystack, char const &split=',');
  63 void ioprintf(ostream &out,const char *format,...) APT_FORMAT2;
  64 void strprintf(string &out,const char *format,...) APT_FORMAT2;
  65 char *safe_snprintf(char *Buffer,char *End,const char *Format,...) APT_FORMAT3;
  66 bool CheckDomainList(const string &Host, const string &List);
  67 int tolower_ascii(int c);
  68
  69 #define APT_MKSTRCMP(name,func) \
  70 inline int name(const char *A,const char *B) {return func(A,A+strlen(A),B,B+strlen(B));}; \
  71 inline int name(const char *A,const char *AEnd,const char *B) {return func(A,AEnd,B,B+strlen(B));}; \
  72 inline int name(const string& A,const char *B) {return func(A.c_str(),A.c_str()+A.length(),B,B+strlen(B));}; \
  73 inline int name(const string& A,const string& B) {return func(A.c_str(),A.c_str()+A.length(),B.c_str(),B.c_str()+B.length());}; \
  74 inline int name(const string& A,const char *B,const char *BEnd) {return func(A.c_str(),A.c_str()+A.length(),B,BEnd);};
  75
  76 #define APT_MKSTRCMP2(name,func) \
  77 inline int name(const char *A,const char *AEnd,const char *B) {return func(A,AEnd,B,B+strlen(B));}; \
  78 inline int name(const string& A,const char *B) {return func(A.begin(),A.end(),B,B+strlen(B));}; \
  79 inline int name(const string& A,const string& B) {return func(A.begin(),A.end(),B.begin(),B.end());}; \
  80 inline int name(const string& A,const char *B,const char *BEnd) {return func(A.begin(),A.end(),B,BEnd);};
  81
  82 int stringcmp(const char *A,const char *AEnd,const char *B,const char *BEnd);
  83 int stringcasecmp(const char *A,const char *AEnd,const char *B,const char *BEnd);
  84
  85 /* We assume that GCC 3 indicates that libstdc++3 is in use too. In that
  86    case the definition of string::const_iterator is not the same as
  87    const char * and we need these extra functions */
  88 #if __GNUC__ >= 3
  89 int stringcmp(string::const_iterator A,string::const_iterator AEnd,
  90               const char *B,const char *BEnd);
  91 int stringcmp(string::const_iterator A,string::const_iterator AEnd,
  92               string::const_iterator B,string::const_iterator BEnd);
  93 int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
  94                   const char *B,const char *BEnd);
  95 int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
  96                   string::const_iterator B,string::const_iterator BEnd);
  97
  98 inline int stringcmp(string::const_iterator A,string::const_iterator Aend,const char *B) {return stringcmp(A,Aend,B,B+strlen(B));};
  99 inline int stringcasecmp(string::const_iterator A,string::const_iterator Aend,const char *B) {return stringcasecmp(A,Aend,B,B+strlen(B));};
 100 #endif
 101
 102 APT_MKSTRCMP2(stringcmp,stringcmp);
 103 APT_MKSTRCMP2(stringcasecmp,stringcasecmp);
 104
 105 inline const char *DeNull(const char *s) {return (s == 0?"(null)":s);};
 106
 107 class URI
 108 {
 109    void CopyFrom(const string &From);
 110
 111    public:
 112
 113    string Access;
 114    string User;
 115    string Password;
 116    string Host;
 117    string Path;
 118    unsigned int Port;
 119
 120    operator string();
 121    inline void operator =(const string &From) {CopyFrom(From);};
 122    inline bool empty() {return Access.empty();};
 123    static string SiteOnly(const string &URI);
 124
 125    URI(string Path) {CopyFrom(Path);};
 126    URI() : Port(0) {};
 127 };
 128
 129 struct SubstVar
 130 {
 131    const char *Subst;
 132    const string *Contents;
 133 };
 134 string SubstVar(string Str,const struct SubstVar *Vars);
 135 string SubstVar(const string &Str,const string &Subst,const string &Contents);
 136
 137 struct RxChoiceList
 138 {
 139    void *UserData;
 140    const char *Str;
 141    bool Hit;
 142 };
 143 unsigned long RegexChoice(RxChoiceList *Rxs,const char **ListBegin,
 144                       const char **ListEnd);
 145
 146 #undef APT_FORMAT2
 147
 148 #endif