X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/410327e1ee0fac0c28a95e45ea75f7359cc8dcb4..070536e61cb203a9c74013be2a26322b582a9674:/apt-pkg/contrib/strutl.cc diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc index 072dda3ac..2100ee47b 100644 --- a/apt-pkg/contrib/strutl.cc +++ b/apt-pkg/contrib/strutl.cc @@ -15,14 +15,20 @@ ##################################################################### */ /*}}}*/ // Includes /*{{{*/ +#include + #include #include #include -#include - +#include +#include +#include +#include +#include #include #include +#include #include #include #include @@ -31,11 +37,34 @@ #include #include -#include "config.h" - -using namespace std; +#include /*}}}*/ +using namespace std; + +// Strip - Remove white space from the front and back of a string /*{{{*/ +// --------------------------------------------------------------------- +namespace APT { + namespace String { +std::string Strip(const std::string &s) +{ + size_t start = s.find_first_not_of(" \t\n"); + // only whitespace + if (start == string::npos) + return ""; + size_t end = s.find_last_not_of(" \t\n"); + return s.substr(start, end-start+1); +} + +bool Endswith(const std::string &s, const std::string &end) +{ + if (end.size() > s.size()) + return false; + return (s.substr(s.size() - end.size(), s.size()) == end); +} +} +} + /*}}}*/ // UTF8ToCodeset - Convert some UTF-8 string for some codeset /*{{{*/ // --------------------------------------------------------------------- /* This is handy to use before display some information for enduser */ @@ -116,14 +145,20 @@ char *_strstrip(char *String) if (*String == 0) return String; - + return _strrstrip(String); +} + /*}}}*/ +// strrstrip - Remove white space from the back of a string /*{{{*/ +// --------------------------------------------------------------------- +char *_strrstrip(char *String) +{ char *End = String + strlen(String) - 1; for (;End != String - 1 && (*End == ' ' || *End == '\t' || *End == '\n' || *End == '\r'); End--); End++; *End = 0; return String; -}; +} /*}}}*/ // strtabexpand - Converts tabs into 8 spaces /*{{{*/ // --------------------------------------------------------------------- @@ -179,14 +214,14 @@ bool ParseQuoteWord(const char *&String,string &Res) { if (*C == '"') { - for (C++; *C != 0 && *C != '"'; C++); - if (*C == 0) + C = strchr(C + 1, '"'); + if (C == NULL) return false; } if (*C == '[') { - for (C++; *C != 0 && *C != ']'; C++); - if (*C == 0) + C = strchr(C + 1, ']'); + if (C == NULL) return false; } } @@ -271,7 +306,7 @@ bool ParseCWord(const char *&String,string &Res) string QuoteString(const string &Str, const char *Bad) { string Res; - for (string::const_iterator I = Str.begin(); I != Str.end(); I++) + for (string::const_iterator I = Str.begin(); I != Str.end(); ++I) { if (strchr(Bad,*I) != 0 || isprint(*I) == 0 || *I == 0x25 || // percent '%' char @@ -298,7 +333,7 @@ string DeQuoteString(string::const_iterator const &begin, string::const_iterator const &end) { string Res; - for (string::const_iterator I = begin; I != end; I++) + for (string::const_iterator I = begin; I != end; ++I) { if (*I == '%' && I + 2 < end && isxdigit(I[1]) && isxdigit(I[2])) @@ -396,7 +431,7 @@ string TimeToStr(unsigned long Sec) /*}}}*/ // SubstVar - Substitute a string for another string /*{{{*/ // --------------------------------------------------------------------- -/* This replaces all occurances of Subst with Contents in Str. */ +/* This replaces all occurrences of Subst with Contents in Str. */ string SubstVar(const string &Str,const string &Subst,const string &Contents) { string::size_type Pos = 0; @@ -632,7 +667,7 @@ string LookupTag(const string &Message,const char *Tag,const char *Default) { // Look for a matching tag. int Length = strlen(Tag); - for (string::const_iterator I = Message.begin(); I + Length < Message.end(); I++) + for (string::const_iterator I = Message.begin(); I + Length < Message.end(); ++I) { // Found the tag if (I[Length] == ':' && stringcasecmp(I,I+Length,Tag) == 0) @@ -640,14 +675,14 @@ string LookupTag(const string &Message,const char *Tag,const char *Default) // Find the end of line and strip the leading/trailing spaces string::const_iterator J; I += Length + 1; - for (; isspace(*I) != 0 && I < Message.end(); I++); - for (J = I; *J != '\n' && J < Message.end(); J++); - for (; J > I && isspace(J[-1]) != 0; J--); + for (; isspace(*I) != 0 && I < Message.end(); ++I); + for (J = I; *J != '\n' && J < Message.end(); ++J); + for (; J > I && isspace(J[-1]) != 0; --J); return string(I,J); } - for (; *I != '\n' && I < Message.end(); I++); + for (; *I != '\n' && I < Message.end(); ++I); } // Failed to find a match @@ -751,7 +786,8 @@ bool ReadMessages(int Fd, vector &List) // Look for the end of the message for (char *I = Buffer; I + 1 < End; I++) { - if (I[0] != '\n' || I[1] != '\n') + if (I[1] != '\n' || + (I[0] != '\n' && strncmp(I, "\r\n\r\n", 4) != 0)) continue; // Pull the message out @@ -759,7 +795,7 @@ bool ReadMessages(int Fd, vector &List) PartialMessage += Message; // Fix up the buffer - for (; I < End && *I == '\n'; I++); + for (; I < End && (*I == '\n' || *I == '\r'); ++I); End -= I-Buffer; memmove(Buffer,I,End-Buffer); I = Buffer; @@ -895,7 +931,7 @@ bool FTPMDTMStrToTime(const char* const str,time_t &time) /*}}}*/ // StrToTime - Converts a string into a time_t /*{{{*/ // --------------------------------------------------------------------- -/* This handles all 3 populare time formats including RFC 1123, RFC 1036 +/* This handles all 3 popular time formats including RFC 1123, RFC 1036 and the C library asctime format. It requires the GNU library function 'timegm' to convert a struct tm in UTC to a time_t. For some bizzar reason the C library does not provide any such function :< This also @@ -904,24 +940,23 @@ bool StrToTime(const string &Val,time_t &Result) { struct tm Tm; char Month[10]; - const char *I = Val.c_str(); - + // Skip the day of the week - for (;*I != 0 && *I != ' '; I++); - + const char *I = strchr(Val.c_str(), ' '); + // Handle RFC 1123 time Month[0] = 0; - if (sscanf(I," %d %3s %d %d:%d:%d GMT",&Tm.tm_mday,Month,&Tm.tm_year, + if (sscanf(I," %2d %3s %4d %2d:%2d:%2d GMT",&Tm.tm_mday,Month,&Tm.tm_year, &Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec) != 6) { // Handle RFC 1036 time - if (sscanf(I," %d-%3s-%d %d:%d:%d GMT",&Tm.tm_mday,Month, + if (sscanf(I," %2d-%3s-%3d %2d:%2d:%2d GMT",&Tm.tm_mday,Month, &Tm.tm_year,&Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec) == 6) Tm.tm_year += 1900; else { // asctime format - if (sscanf(I," %3s %d %d:%d:%d %d",Month,&Tm.tm_mday, + if (sscanf(I," %3s %2d %2d:%2d:%2d %4d",Month,&Tm.tm_mday, &Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec,&Tm.tm_year) != 6) { // 'ftp' time @@ -936,6 +971,8 @@ bool StrToTime(const string &Val,time_t &Result) Tm.tm_isdst = 0; if (Month[0] != 0) Tm.tm_mon = MonthConv(Month); + else + Tm.tm_mon = 0; // we don't have a month, so pick something Tm.tm_year -= 1900; // Convert to local time and then to GMT @@ -970,6 +1007,34 @@ bool StrToNum(const char *Str,unsigned long &Res,unsigned Len,unsigned Base) return true; } /*}}}*/ +// StrToNum - Convert a fixed length string to a number /*{{{*/ +// --------------------------------------------------------------------- +/* This is used in decoding the crazy fixed length string headers in + tar and ar files. */ +bool StrToNum(const char *Str,unsigned long long &Res,unsigned Len,unsigned Base) +{ + char S[30]; + if (Len >= sizeof(S)) + return false; + memcpy(S,Str,Len); + S[Len] = 0; + + // All spaces is a zero + Res = 0; + unsigned I; + for (I = 0; S[I] == ' '; I++); + if (S[I] == 0) + return true; + + char *End; + Res = strtoull(S,&End,Base); + if (End == S) + return false; + + return true; +} + /*}}}*/ + // Base256ToNum - Convert a fixed length binary to a number /*{{{*/ // --------------------------------------------------------------------- /* This is used in decoding the 256bit encoded fixed length fields in @@ -1070,9 +1135,11 @@ bool TokSplitString(char Tok,char *Input,char **List, also, but the advantage is that we have an iteratable vector */ vector VectorizeString(string const &haystack, char const &split) { + vector exploded; + if (haystack.empty() == true) + return exploded; string::const_iterator start = haystack.begin(); string::const_iterator end = start; - vector exploded; do { for (; end != haystack.end() && *end != split; ++end); exploded.push_back(string(start, end)); @@ -1081,6 +1148,37 @@ vector VectorizeString(string const &haystack, char const &split) return exploded; } /*}}}*/ +// StringSplit - split a string into a string vector by token /*{{{*/ +// --------------------------------------------------------------------- +/* See header for details. + */ +vector StringSplit(std::string const &s, std::string const &sep, + unsigned int maxsplit) +{ + vector split; + size_t start, pos; + + // no seperator given, this is bogus + if(sep.size() == 0) + return split; + + start = pos = 0; + while (pos != string::npos) + { + pos = s.find(sep, start); + split.push_back(s.substr(start, pos-start)); + + // if maxsplit is reached, the remaining string is the last item + if(split.size() >= maxsplit) + { + split[split.size()-1] = s.substr(start); + break; + } + start = pos+sep.size(); + } + return split; +} + /*}}}*/ // RegexChoice - Simple regex list/list matcher /*{{{*/ // --------------------------------------------------------------------- /* */ @@ -1091,7 +1189,7 @@ unsigned long RegexChoice(RxChoiceList *Rxs,const char **ListBegin, R->Hit = false; unsigned long Hits = 0; - for (; ListBegin != ListEnd; ListBegin++) + for (; ListBegin < ListEnd; ++ListBegin) { // Check if the name is a regex const char *I; @@ -1141,34 +1239,50 @@ unsigned long RegexChoice(RxChoiceList *Rxs,const char **ListBegin, return Hits; } /*}}}*/ -// ioprintf - C format string outputter to C++ iostreams /*{{{*/ +// {str,io}printf - C format string outputter to C++ strings/iostreams /*{{{*/ // --------------------------------------------------------------------- /* This is used to make the internationalization strings easier to translate and to allow reordering of parameters */ -void ioprintf(ostream &out,const char *format,...) +static bool iovprintf(ostream &out, const char *format, + va_list &args, ssize_t &size) { + char *S = (char*)malloc(size); + ssize_t const n = vsnprintf(S, size, format, args); + if (n > -1 && n < size) { + out << S; + free(S); + return true; + } else { + if (n > -1) + size = n + 1; + else + size *= 2; + } + free(S); + return false; +} +void ioprintf(ostream &out,const char *format,...) { va_list args; - va_start(args,format); - - // sprintf the description - char S[4096]; - vsnprintf(S,sizeof(S),format,args); - out << S; + ssize_t size = 400; + while (true) { + va_start(args,format); + if (iovprintf(out, format, args, size) == true) + return; + va_end(args); + } } - /*}}}*/ -// strprintf - C format string outputter to C++ strings /*{{{*/ -// --------------------------------------------------------------------- -/* This is used to make the internationalization strings easier to translate - and to allow reordering of parameters */ -void strprintf(string &out,const char *format,...) +void strprintf(string &out,const char *format,...) { va_list args; - va_start(args,format); - - // sprintf the description - char S[4096]; - vsnprintf(S,sizeof(S),format,args); - out = string(S); + ssize_t size = 400; + std::ostringstream outstr; + while (true) { + va_start(args,format); + if (iovprintf(outstr, format, args, size) == true) + break; + va_end(args); + } + out = outstr.str(); } /*}}}*/ // safe_snprintf - Safer snprintf /*{{{*/ @@ -1182,12 +1296,12 @@ char *safe_snprintf(char *Buffer,char *End,const char *Format,...) va_list args; int Did; - va_start(args,Format); - if (End <= Buffer) return End; - + va_start(args,Format); Did = vsnprintf(Buffer,End - Buffer,Format,args); + va_end(args); + if (Did < 0 || Buffer + Did > End) return End; return Buffer + Did; @@ -1202,11 +1316,11 @@ string StripEpoch(const string &VerStr) return VerStr; return VerStr.substr(i+1); } - + /*}}}*/ // tolower_ascii - tolower() function that ignores the locale /*{{{*/ // --------------------------------------------------------------------- /* This little function is the most called method we have and tries - therefore to do the absolut minimum - and is noteable faster than + therefore to do the absolut minimum - and is notable faster than standard tolower/toupper and as a bonus avoids problems with different locales - we only operate on ascii chars anyway. */ int tolower_ascii(int const c) @@ -1217,14 +1331,14 @@ int tolower_ascii(int const c) } /*}}}*/ -// CheckDomainList - See if Host is in a , seperate list /*{{{*/ +// CheckDomainList - See if Host is in a , separate list /*{{{*/ // --------------------------------------------------------------------- -/* The domain list is a comma seperate list of domains that are suffix +/* The domain list is a comma separate list of domains that are suffix matched against the argument */ bool CheckDomainList(const string &Host,const string &List) { string::const_iterator Start = List.begin(); - for (string::const_iterator Cur = List.begin(); Cur <= List.end(); Cur++) + for (string::const_iterator Cur = List.begin(); Cur <= List.end(); ++Cur) { if (Cur < List.end() && *Cur != ',') continue; @@ -1240,7 +1354,80 @@ bool CheckDomainList(const string &Host,const string &List) return false; } /*}}}*/ +// strv_length - Return the length of a NULL-terminated string array /*{{{*/ +// --------------------------------------------------------------------- +/* */ +size_t strv_length(const char **str_array) +{ + size_t i; + for (i=0; str_array[i] != NULL; i++) + /* nothing */ + ; + return i; +} + +// DeEscapeString - unescape (\0XX and \xXX) from a string /*{{{*/ +// --------------------------------------------------------------------- +/* */ +string DeEscapeString(const string &input) +{ + char tmp[3]; + string::const_iterator it; + string output; + for (it = input.begin(); it != input.end(); ++it) + { + // just copy non-escape chars + if (*it != '\\') + { + output += *it; + continue; + } + + // deal with double escape + if (*it == '\\' && + (it + 1 < input.end()) && it[1] == '\\') + { + // copy + output += *it; + // advance iterator one step further + ++it; + continue; + } + + // ensure we have a char to read + if (it + 1 == input.end()) + continue; + // read it + ++it; + switch (*it) + { + case '0': + if (it + 2 <= input.end()) { + tmp[0] = it[1]; + tmp[1] = it[2]; + tmp[2] = 0; + output += (char)strtol(tmp, 0, 8); + it += 2; + } + break; + case 'x': + if (it + 2 <= input.end()) { + tmp[0] = it[1]; + tmp[1] = it[2]; + tmp[2] = 0; + output += (char)strtol(tmp, 0, 16); + it += 2; + } + break; + default: + // FIXME: raise exception here? + break; + } + } + return output; +} + /*}}}*/ // URI::CopyFrom - Copy from an object /*{{{*/ // --------------------------------------------------------------------- /* This parses the URI into all of its components */ @@ -1249,7 +1436,7 @@ void URI::CopyFrom(const string &U) string::const_iterator I = U.begin(); // Locate the first colon, this separates the scheme - for (; I < U.end() && *I != ':' ; I++); + for (; I < U.end() && *I != ':' ; ++I); string::const_iterator FirstColon = I; /* Determine if this is a host type URI with a leading double // @@ -1261,7 +1448,7 @@ void URI::CopyFrom(const string &U) /* Find the / indicating the end of the hostname, ignoring /'s in the square brackets */ bool InBracket = false; - for (; SingleSlash < U.end() && (*SingleSlash != '/' || InBracket == true); SingleSlash++) + for (; SingleSlash < U.end() && (*SingleSlash != '/' || InBracket == true); ++SingleSlash) { if (*SingleSlash == '[') InBracket = true; @@ -1294,11 +1481,11 @@ void URI::CopyFrom(const string &U) I = FirstColon + 1; if (I > SingleSlash) I = SingleSlash; - for (; I < SingleSlash && *I != ':'; I++); + for (; I < SingleSlash && *I != ':'; ++I); string::const_iterator SecondColon = I; // Search for the @ after the colon - for (; I < SingleSlash && *I != '@'; I++); + for (; I < SingleSlash && *I != '@'; ++I); string::const_iterator At = I; // Now write the host and user/pass @@ -1372,9 +1559,12 @@ URI::operator string() if (User.empty() == false) { - Res += User; + // FIXME: Technically userinfo is permitted even less + // characters than these, but this is not conveniently + // expressed with a blacklist. + Res += QuoteString(User, ":/?#[]@"); if (Password.empty() == false) - Res += ":" + Password; + Res += ":" + QuoteString(Password, ":/?#[]@"); Res += "@"; } @@ -1413,7 +1603,6 @@ string URI::SiteOnly(const string &URI) U.User.clear(); U.Password.clear(); U.Path.clear(); - U.Port = 0; return U; } /*}}}*/ @@ -1425,7 +1614,6 @@ string URI::NoUserPassword(const string &URI) ::URI U(URI); U.User.clear(); U.Password.clear(); - U.Port = 0; return U; } /*}}}*/