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 <vector>
  24 #include <iostream>
  25 #include <time.h>
  26
  27 using std::string;
  28 using std::vector;
  29 using std::ostream;
  30
  31 #ifdef __GNUG__
  32 // Methods have a hidden this parameter that is visible to this attribute
  33 #define APT_FORMAT2 __attribute__ ((format (printf, 2, 3)))
  34 #define APT_FORMAT3 __attribute__ ((format (printf, 3, 4)))
  35 #else
  36 #define APT_FORMAT2
  37 #define APT_FORMAT3
  38 #endif
  39
  40 bool UTF8ToCodeset(const char *codeset, const string &orig, string *dest);
  41 char *_strstrip(char *String);
  42 char *_strtabexpand(char *String,size_t Len);
  43 bool ParseQuoteWord(const char *&String,string &Res);
  44 bool ParseCWord(const char *&String,string &Res);
  45 string QuoteString(const string &Str,const char *Bad);
  46 string DeQuoteString(const string &Str);
  47 string SizeToStr(double Bytes);
  48 string TimeToStr(unsigned long Sec);
  49 string Base64Encode(const string &Str);
  50 string URItoFileName(const string &URI);
  51 string TimeRFC1123(time_t Date);
  52 bool StrToTime(const string &Val,time_t &Result);
  53 string LookupTag(const string &Message,const char *Tag,const char *Default = 0);
  54 int StringToBool(const string &Text,int Default = -1);
  55 bool ReadMessages(int Fd, vector<string> &List);
  56 bool StrToNum(const char *Str,unsigned long &Res,unsigned Len,unsigned Base = 0);
  57 bool Hex2Num(const string &Str,unsigned char *Num,unsigned int Length);
  58 bool TokSplitString(char Tok,char *Input,char **List,
  59                     unsigned long ListMax);
  60 void ioprintf(ostream &out,const char *format,...) APT_FORMAT2;
  61 char *safe_snprintf(char *Buffer,char *End,const char *Format,...) APT_FORMAT3;
  62 bool CheckDomainList(const string &Host, const string &List);
  63
  64 #define APT_MKSTRCMP(name,func) \
  65 inline int name(const char *A,const char *AEnd,const char *B) {return func(A,AEnd,B,B+strlen(B));}; \
  66 inline int name(string A,const char *B) {return func(A.c_str(),A.c_str()+A.length(),B,B+strlen(B));}; \
  67 inline int name(string A,string B) {return func(A.c_str(),A.c_str()+A.length(),B.c_str(),B.c_str()+B.length());}; \
  68 inline int name(string A,const char *B,const char *BEnd) {return func(A.c_str(),A.c_str()+A.length(),B,BEnd);};
  69
  70 #define APT_MKSTRCMP2(name,func) \
  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(string A,const char *B) {return func(A.begin(),A.end(),B,B+strlen(B));}; \
  73 inline int name(string A,string B) {return func(A.begin(),A.end(),B.begin(),B.end());}; \
  74 inline int name(string A,const char *B,const char *BEnd) {return func(A.begin(),A.end(),B,BEnd);};
  75
  76 int stringcmp(const char *A,const char *AEnd,const char *B,const char *BEnd);
  77 int stringcasecmp(const char *A,const char *AEnd,const char *B,const char *BEnd);
  78
  79 /* We assume that GCC 3 indicates that libstdc++3 is in use too. In that
  80    case the definition of string::const_iterator is not the same as
  81    const char * and we need these extra functions */
  82 #if __GNUC__ >= 3
  83 int stringcmp(string::const_iterator A,string::const_iterator AEnd,
  84               const char *B,const char *BEnd);
  85 int stringcmp(string::const_iterator A,string::const_iterator AEnd,
  86               string::const_iterator B,string::const_iterator BEnd);
  87 int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
  88                   const char *B,const char *BEnd);
  89 int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
  90                   string::const_iterator B,string::const_iterator BEnd);
  91
  92 inline int stringcmp(string::const_iterator A,string::const_iterator Aend,const char *B) {return stringcmp(A,Aend,B,B+strlen(B));};
  93 inline int stringcasecmp(string::const_iterator A,string::const_iterator Aend,const char *B) {return stringcasecmp(A,Aend,B,B+strlen(B));};
  94 #endif
  95
  96 APT_MKSTRCMP2(stringcmp,stringcmp);
  97 APT_MKSTRCMP2(stringcasecmp,stringcasecmp);
  98
  99 inline const char *DeNull(const char *s) {return (s == 0?"(null)":s);};
 100
 101 class URI
 102 {
 103    void CopyFrom(const string &From);
 104
 105    public:
 106
 107    string Access;
 108    string User;
 109    string Password;
 110    string Host;
 111    string Path;
 112    unsigned int Port;
 113
 114    operator string();
 115    inline void operator =(const string &From) {CopyFrom(From);};
 116    inline bool empty() {return Access.empty();};
 117    static string SiteOnly(const string &URI);
 118
 119    URI(string Path) {CopyFrom(Path);};
 120    URI() : Port(0) {};
 121 };
 122
 123 struct SubstVar
 124 {
 125    const char *Subst;
 126    const string *Contents;
 127 };
 128 string SubstVar(string Str,const struct SubstVar *Vars);
 129 string SubstVar(const string &Str,const string &Subst,const string &Contents);
 130
 131 struct RxChoiceList
 132 {
 133    void *UserData;
 134    const char *Str;
 135    bool Hit;
 136 };
 137 unsigned long RegexChoice(RxChoiceList *Rxs,const char **ListBegin,
 138                       const char **ListEnd);
 139
 140 #undef APT_FORMAT2
 141
 142 #endif