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 #include "macros.h"
  29
  30 using std::string;
  31 using std::vector;
  32 using std::ostream;
  33
  34 bool UTF8ToCodeset(const char *codeset, const string &orig, string *dest);
  35 char *_strstrip(char *String);
  36 char *_strtabexpand(char *String,size_t Len);
  37 bool ParseQuoteWord(const char *&String,string &Res);
  38 bool ParseCWord(const char *&String,string &Res);
  39 string QuoteString(const string &Str,const char *Bad);
  40 string DeQuoteString(const string &Str);
  41 string DeQuoteString(string::const_iterator const &begin, string::const_iterator const &end);
  42 string SizeToStr(double Bytes);
  43 string TimeToStr(unsigned long Sec);
  44 string Base64Encode(const string &Str);
  45 string OutputInDepth(const unsigned long Depth, const char* Separator="  ");
  46 string URItoFileName(const string &URI);
  47 string TimeRFC1123(time_t Date);
  48 bool RFC1123StrToTime(const char* const str,time_t &time) __must_check;
  49 bool FTPMDTMStrToTime(const char* const str,time_t &time) __must_check;
  50 __deprecated bool StrToTime(const string &Val,time_t &Result);
  51 string LookupTag(const string &Message,const char *Tag,const char *Default = 0);
  52 int StringToBool(const string &Text,int Default = -1);
  53 bool ReadMessages(int Fd, vector<string> &List);
  54 bool StrToNum(const char *Str,unsigned long &Res,unsigned Len,unsigned Base = 0);
  55 bool Base256ToNum(const char *Str,unsigned long &Res,unsigned int Len);
  56 bool Hex2Num(const string &Str,unsigned char *Num,unsigned int Length);
  57 bool TokSplitString(char Tok,char *Input,char **List,
  58                     unsigned long ListMax);
  59 vector<string> VectorizeString(string const &haystack, char const &split) __attrib_const;
  60 void ioprintf(ostream &out,const char *format,...) __like_printf(2);
  61 void strprintf(string &out,const char *format,...) __like_printf(2);
  62 char *safe_snprintf(char *Buffer,char *End,const char *Format,...) __like_printf(3);
  63 bool CheckDomainList(const string &Host, const string &List);
  64 int tolower_ascii(int const c) __attrib_const __hot;
  65 string StripEpoch(const string &VerStr);
  66
  67 #define APT_MKSTRCMP(name,func) \
  68 inline int name(const char *A,const char *B) {return func(A,A+strlen(A),B,B+strlen(B));}; \
  69 inline int name(const char *A,const char *AEnd,const char *B) {return func(A,AEnd,B,B+strlen(B));}; \
  70 inline int name(const string& A,const char *B) {return func(A.c_str(),A.c_str()+A.length(),B,B+strlen(B));}; \
  71 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());}; \
  72 inline int name(const string& A,const char *B,const char *BEnd) {return func(A.c_str(),A.c_str()+A.length(),B,BEnd);};
  73
  74 #define APT_MKSTRCMP2(name,func) \
  75 inline int name(const char *A,const char *AEnd,const char *B) {return func(A,AEnd,B,B+strlen(B));}; \
  76 inline int name(const string& A,const char *B) {return func(A.begin(),A.end(),B,B+strlen(B));}; \
  77 inline int name(const string& A,const string& B) {return func(A.begin(),A.end(),B.begin(),B.end());}; \
  78 inline int name(const string& A,const char *B,const char *BEnd) {return func(A.begin(),A.end(),B,BEnd);};
  79
  80 int stringcmp(const char *A,const char *AEnd,const char *B,const char *BEnd);
  81 int stringcasecmp(const char *A,const char *AEnd,const char *B,const char *BEnd);
  82
  83 /* We assume that GCC 3 indicates that libstdc++3 is in use too. In that
  84    case the definition of string::const_iterator is not the same as
  85    const char * and we need these extra functions */
  86 #if __GNUC__ >= 3
  87 int stringcmp(string::const_iterator A,string::const_iterator AEnd,
  88               const char *B,const char *BEnd);
  89 int stringcmp(string::const_iterator A,string::const_iterator AEnd,
  90               string::const_iterator B,string::const_iterator BEnd);
  91 int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
  92                   const char *B,const char *BEnd);
  93 int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
  94                   string::const_iterator B,string::const_iterator BEnd);
  95
  96 inline int stringcmp(string::const_iterator A,string::const_iterator Aend,const char *B) {return stringcmp(A,Aend,B,B+strlen(B));};
  97 inline int stringcasecmp(string::const_iterator A,string::const_iterator Aend,const char *B) {return stringcasecmp(A,Aend,B,B+strlen(B));};
  98 #endif
  99
 100 APT_MKSTRCMP2(stringcmp,stringcmp);
 101 APT_MKSTRCMP2(stringcasecmp,stringcasecmp);
 102
 103 inline const char *DeNull(const char *s) {return (s == 0?"(null)":s);};
 104
 105 class URI
 106 {
 107    void CopyFrom(const string &From);
 108
 109    public:
 110
 111    string Access;
 112    string User;
 113    string Password;
 114    string Host;
 115    string Path;
 116    unsigned int Port;
 117
 118    operator string();
 119    inline void operator =(const string &From) {CopyFrom(From);};
 120    inline bool empty() {return Access.empty();};
 121    static string SiteOnly(const string &URI);
 122    static string NoUserPassword(const string &URI);
 123
 124    URI(string Path) {CopyFrom(Path);};
 125    URI() : Port(0) {};
 126 };
 127
 128 struct SubstVar
 129 {
 130    const char *Subst;
 131    const string *Contents;
 132 };
 133 string SubstVar(string Str,const struct SubstVar *Vars);
 134 string SubstVar(const string &Str,const string &Subst,const string &Contents);
 135
 136 struct RxChoiceList
 137 {
 138    void *UserData;
 139    const char *Str;
 140    bool Hit;
 141 };
 142 unsigned long RegexChoice(RxChoiceList *Rxs,const char **ListBegin,
 143                       const char **ListEnd);
 144
 145 #endif