// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: strutl.cc,v 1.34 2000/01/16 05:36:17 jgg Exp $
+// $Id: strutl.cc,v 1.35 2001/02/20 07:03:17 jgg Exp $
/* ######################################################################
- String Util - Some usefull string functions.
+ String Util - Some useful string functions.
- These have been collected from here and there to do all sorts of usefull
- things to strings. They are usefull in file parsers, URI handlers and
+ These have been collected from here and there to do all sorts of useful
+ things to strings. They are useful in file parsers, URI handlers and
especially in APT methods.
This source is placed in the Public Domain, do with it what you will
#include <apt-pkg/strutl.h>
#include <apt-pkg/fileutl.h>
+#include <apt-pkg/error.h>
+#include <apti18n.h>
+
#include <ctype.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
+#include <regex.h>
#include <errno.h>
+#include <stdarg.h>
/*}}}*/
// strstrip - Remove white space from the front and back of a string /*{{{*/
/*}}}*/
// ParseCWord - Parses a string like a C "" expression /*{{{*/
// ---------------------------------------------------------------------
-/* This expects a series of space seperated strings enclosed in ""'s.
+/* This expects a series of space separated strings enclosed in ""'s.
It concatenates the ""'s into a single string. */
-bool ParseCWord(const char *String,string &Res)
+bool ParseCWord(const char *&String,string &Res)
{
// Skip leading whitespace
const char *C = String;
if (isspace(*C) == 0)
return false;
*Buf++ = ' ';
- }
+ }
*Buf = 0;
Res = Buffer;
+ String = C;
return true;
}
/*}}}*/
return Temp + string(Str,OldPos);
}
+
+string SubstVar(string Str,const struct SubstVar *Vars)
+{
+ for (; Vars->Subst != 0; Vars++)
+ Str = SubstVar(Str,Vars->Subst,*Vars->Contents);
+ return Str;
+}
/*}}}*/
// URItoFileName - Convert the uri into a unique file name /*{{{*/
// ---------------------------------------------------------------------
return false;
// No data
- if (Res <= 0)
+ if (Res < 0 && errno == EAGAIN)
return true;
-
+ if (Res < 0)
+ return false;
+
End += Res;
// Look for the end of the message
return true;
}
/*}}}*/
+// TokSplitString - Split a string up by a given token /*{{{*/
+// ---------------------------------------------------------------------
+/* This is intended to be a faster splitter, it does not use dynamic
+ memories. Input is changed to insert nulls at each token location. */
+bool TokSplitString(char Tok,char *Input,char **List,
+ unsigned long ListMax)
+{
+ // Strip any leading spaces
+ char *Start = Input;
+ char *Stop = Start + strlen(Start);
+ for (; *Start != 0 && isspace(*Start) != 0; Start++);
+
+ unsigned long Count = 0;
+ char *Pos = Start;
+ while (Pos != Stop)
+ {
+ // Skip to the next Token
+ for (; Pos != Stop && *Pos != Tok; Pos++);
+
+ // Back remove spaces
+ char *End = Pos;
+ for (; End > Start && (End[-1] == Tok || isspace(End[-1]) != 0); End--);
+ *End = 0;
+
+ List[Count++] = Start;
+ if (Count >= ListMax)
+ {
+ List[Count-1] = 0;
+ return false;
+ }
+
+ // Advance pos
+ for (; Pos != Stop && (*Pos == Tok || isspace(*Pos) != 0 || *Pos == 0); Pos++);
+ Start = Pos;
+ }
+
+ List[Count] = 0;
+ return true;
+}
+ /*}}}*/
+// RegexChoice - Simple regex list/list matcher /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+unsigned long RegexChoice(RxChoiceList *Rxs,const char **ListBegin,
+ const char **ListEnd)
+{
+ for (RxChoiceList *R = Rxs; R->Str != 0; R++)
+ R->Hit = false;
+
+ unsigned long Hits = 0;
+ for (; ListBegin != ListEnd; ListBegin++)
+ {
+ // Check if the name is a regex
+ const char *I;
+ bool Regex = true;
+ for (I = *ListBegin; *I != 0; I++)
+ if (*I == '.' || *I == '?' || *I == '*' || *I == '|')
+ break;
+ if (*I == 0)
+ Regex = false;
+
+ // Compile the regex pattern
+ regex_t Pattern;
+ if (Regex == true)
+ if (regcomp(&Pattern,*ListBegin,REG_EXTENDED | REG_ICASE |
+ REG_NOSUB) != 0)
+ Regex = false;
+
+ // Search the list
+ bool Done = false;
+ for (RxChoiceList *R = Rxs; R->Str != 0; R++)
+ {
+ if (R->Str[0] == 0)
+ continue;
+
+ if (strcasecmp(R->Str,*ListBegin) != 0)
+ {
+ if (Regex == false)
+ continue;
+ if (regexec(&Pattern,R->Str,0,0,0) != 0)
+ continue;
+ }
+ Done = true;
+
+ if (R->Hit == false)
+ Hits++;
+
+ R->Hit = true;
+ }
+
+ if (Regex == true)
+ regfree(&Pattern);
+
+ if (Done == false)
+ _error->Warning(_("Selection %s not found"),*ListBegin);
+ }
+
+ return Hits;
+}
+ /*}}}*/
+// ioprintf - C format string outputter to C++ iostreams /*{{{*/
+// ---------------------------------------------------------------------
+/* This is used to make the internationalization strinc easier to translate
+ and to allow reordering of parameters */
+void ioprintf(ostream &out,const char *format,...)
+{
+ va_list args;
+ va_start(args,format);
+
+ // sprintf the description
+ char S[400];
+ vsnprintf(S,sizeof(S),format,args);
+ out << S;
+}
+ /*}}}*/
// URI::CopyFrom - Copy from an object /*{{{*/
// ---------------------------------------------------------------------
{
string::const_iterator I = U.begin();
- // Locate the first colon, this seperates the scheme
+ // Locate the first colon, this separates the scheme
for (; I < U.end() && *I != ':' ; I++);
string::const_iterator FirstColon = I;
return Res;
}
/*}}}*/
+// URI::SiteOnly - Return the schema and site for the URI /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+string URI::SiteOnly(string URI)
+{
+ ::URI U(URI);
+ U.User = string();
+ U.Password = string();
+ U.Path = string();
+ U.Port = 0;
+ return U;
+}
+ /*}}}*/
projects / apt.git / blobdiff