// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: cmndline.cc,v 1.1 1998/09/22 05:30:26 jgg Exp $
+// $Id: cmndline.cc,v 1.15 2003/02/10 01:40:58 doogie Exp $
/* ######################################################################
Command Line Class - Sophisticated command line parser
+ This source is placed in the Public Domain, do with it what you will
+ It was originally written by Jason Gunthorpe <jgg@debian.org>.
+
##################################################################### */
/*}}}*/
// Include files /*{{{*/
-#ifdef __GNUG__
-#pragma implementation "apt-pkg/cmndline.h"
-#endif
+#include<config.h>
+
+#include <apt-pkg/configuration.h>
#include <apt-pkg/cmndline.h>
#include <apt-pkg/error.h>
-#include <strutl.h>
+#include <apt-pkg/strutl.h>
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <string>
+
+#include <apti18n.h>
/*}}}*/
+using namespace std;
// CommandLine::CommandLine - Constructor /*{{{*/
// ---------------------------------------------------------------------
CommandLine::CommandLine(Args *AList,Configuration *Conf) : ArgList(AList),
Conf(Conf), FileList(0)
{
+}
+ /*}}}*/
+// CommandLine::~CommandLine - Destructor /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+CommandLine::~CommandLine()
+{
+ delete [] FileList;
+}
+ /*}}}*/
+// CommandLine::GetCommand - return the first non-option word /*{{{*/
+char const * CommandLine::GetCommand(Dispatch const * const Map,
+ unsigned int const argc, char const * const * const argv)
+{
+ // if there is a -- on the line there must be the word we search for either
+ // before it (as -- marks the end of the options) or right after it (as we can't
+ // decide if the command is actually an option, given that in theory, you could
+ // have parameters named like commands)
+ for (size_t i = 1; i < argc; ++i)
+ {
+ if (strcmp(argv[i], "--") != 0)
+ continue;
+ // check if command is before --
+ for (size_t k = 1; k < i; ++k)
+ for (size_t j = 0; Map[j].Match != NULL; ++j)
+ if (strcmp(argv[k], Map[j].Match) == 0)
+ return Map[j].Match;
+ // see if the next token after -- is the command
+ ++i;
+ if (i < argc)
+ for (size_t j = 0; Map[j].Match != NULL; ++j)
+ if (strcmp(argv[i], Map[j].Match) == 0)
+ return Map[j].Match;
+ // we found a --, but not a command
+ return NULL;
+ }
+ // no --, so search for the first word matching a command
+ // FIXME: How like is it that an option parameter will be also a valid Match ?
+ for (size_t i = 1; i < argc; ++i)
+ {
+ if (*(argv[i]) == '-')
+ continue;
+ for (size_t j = 0; Map[j].Match != NULL; ++j)
+ if (strcmp(argv[i], Map[j].Match) == 0)
+ return Map[j].Match;
+ }
+ return NULL;
}
/*}}}*/
// CommandLine::Parse - Main action member /*{{{*/
/* */
bool CommandLine::Parse(int argc,const char **argv)
{
+ delete [] FileList;
FileList = new const char *[argc];
const char **Files = FileList;
int I;
// Double dash signifies the end of option processing
if (*Opt == '-' && Opt[1] == 0)
+ {
+ I++;
break;
+ }
// Single dash is a short option
if (*Opt != '-')
Args *A;
for (A = ArgList; A->end() == false && A->ShortOpt != *Opt; A++);
if (A->end() == true)
- return _error->Error("Command line option '%c' [from %s] is not known.",*Opt,argv[I]);
+ return _error->Error(_("Command line option '%c' [from %s] is not known."),*Opt,argv[I]);
if (HandleOpt(I,argc,argv,Opt,A) == false)
return false;
Opt++;
// Match up to a = against the list
- const char *OptEnd = Opt;
Args *A;
- for (; *OptEnd != 0 && *OptEnd != '='; OptEnd++);
- for (A = ArgList; A->end() == false &&
- stringcasecmp(Opt,OptEnd,A->LongOpt) != 0; A++);
+ const char *OptEnd = strchrnul(Opt, '=');
+ for (A = ArgList; A->end() == false &&
+ (A->LongOpt == 0 || stringcasecmp(Opt,OptEnd,A->LongOpt) != 0);
+ ++A);
// Failed, look for a word after the first - (no-foo)
+ bool PreceedMatch = false;
if (A->end() == true)
{
- for (; Opt != OptEnd && *Opt != '-'; Opt++);
-
- if (Opt == OptEnd)
- return _error->Error("Command line option %s is not understood",argv[I]);
+ Opt = (const char*) memchr(Opt, '-', OptEnd - Opt);
+ if (Opt == NULL)
+ return _error->Error(_("Command line option %s is not understood"),argv[I]);
Opt++;
for (A = ArgList; A->end() == false &&
- stringcasecmp(Opt,OptEnd,A->LongOpt) != 0; A++);
+ (A->LongOpt == 0 || stringcasecmp(Opt,OptEnd,A->LongOpt) != 0);
+ ++A);
// Failed again..
if (A->end() == true && OptEnd - Opt != 1)
- return _error->Error("Command line option %s is not understood",argv[I]);
-
+ return _error->Error(_("Command line option %s is not understood"),argv[I]);
+
// The option could be a single letter option prefixed by a no-..
- for (A = ArgList; A->end() == false && A->ShortOpt != *Opt; A++);
-
if (A->end() == true)
- return _error->Error("Command line option %s is not understood",argv[I]);
+ {
+ for (A = ArgList; A->end() == false && A->ShortOpt != *Opt; A++);
+
+ if (A->end() == true)
+ return _error->Error(_("Command line option %s is not understood"),argv[I]);
+ }
+
+ // The option is not boolean
+ if (A->IsBoolean() == false)
+ return _error->Error(_("Command line option %s is not boolean"),argv[I]);
+ PreceedMatch = true;
}
// Deal with it.
OptEnd--;
- if (HandleOpt(I,argc,argv,OptEnd,A) == false)
+ if (HandleOpt(I,argc,argv,OptEnd,A,PreceedMatch) == false)
return false;
}
for (; I != argc; I++)
*Files++ = argv[I];
*Files = 0;
-
+
+ SaveInConfig(argc, argv);
+
return true;
}
/*}}}*/
and looks for specific patterns in the string, it gets tokanized
-ruffly- like -*[yes|true|enable]-(o|longopt)[=][ ][argument] */
bool CommandLine::HandleOpt(int &I,int argc,const char *argv[],
- const char *&Opt,Args *A)
+ const char *&Opt,Args *A,bool PreceedMatch)
{
const char *Argument = 0;
bool CertainArg = false;
// Equals was specified but we fell off the end!
if (Opt[1] == '=' && Argument == 0)
- return _error->Error("Option %s requires an argument.",argv[I]);
+ return _error->Error(_("Option %s requires an argument."),argv[I]);
if (Opt[1] == '=')
CertainArg = true;
else
Argument = Opt + 1;
}
-
+
// Option is an argument set
if ((A->Flags & HasArg) == HasArg)
{
if (Argument == 0)
- return _error->Error("Option %s requires an argument.",argv[I]);
+ return _error->Error(_("Option %s requires an argument."),argv[I]);
Opt += strlen(Opt);
I += IncI;
// Parse a configuration file
if ((A->Flags & ConfigFile) == ConfigFile)
return ReadConfigFile(*Conf,Argument);
+
+ // Arbitrary item specification
+ if ((A->Flags & ArbItem) == ArbItem)
+ {
+ const char *J = strchr(Argument, '=');
+ if (J == NULL)
+ return _error->Error(_("Option %s: Configuration item specification must have an =<val>."),argv[I]);
+
+ // = is trailing
+ if (J[1] == 0)
+ {
+ if (I+1 >= argc)
+ return _error->Error(_("Option %s: Configuration item specification must have an =<val>."),argv[I]);
+ Conf->Set(string(Argument,J-Argument),string(argv[I++ +1]));
+ }
+ else
+ Conf->Set(string(Argument,J-Argument),string(J+1));
+
+ return true;
+ }
- Conf->Set(A->ConfName,Argument);
+ const char *I = strchrnul(A->ConfName, ' ');
+ if (*I == ' ')
+ Conf->Set(string(A->ConfName,0,I-A->ConfName),string(I+1) + Argument);
+ else
+ Conf->Set(A->ConfName,string(I) + Argument);
+
return true;
}
// Conversion failed and the argument was specified with an =s
if (EndPtr == Argument && CertainArg == true)
- return _error->Error("Option %s requires an integer argument, not '%s'",argv[I],Argument);
+ return _error->Error(_("Option %s requires an integer argument, not '%s'"),argv[I],Argument);
// Conversion was ok, set the value and return
- if (EndPtr != Argument)
+ if (EndPtr != 0 && EndPtr != Argument && *EndPtr == 0)
{
Conf->Set(A->ConfName,Value);
Opt += strlen(Opt);
// Look for an argument.
while (1)
{
- // Look at preceeding text
+ // Look at preceding text
char Buffer[300];
if (Argument == 0)
{
- if (strlen(argv[I]) >= sizeof(Buffer))
- return _error->Error("Option '%s' is too long",argv[I]);
+ if (PreceedMatch == false)
+ break;
+ if (strlen(argv[I]) >= sizeof(Buffer))
+ return _error->Error(_("Option '%s' is too long"),argv[I]);
+
+ // Skip the leading dash
const char *J = argv[I];
for (; *J != 0 && *J == '-'; J++);
- const char *JEnd = J;
- for (; *JEnd != 0 && *JEnd != '-'; JEnd++);
- if (*JEnd != 0)
+
+ const char *JEnd = strchr(J, '-');
+ if (JEnd != NULL)
{
strncpy(Buffer,J,JEnd - J);
Buffer[JEnd - J] = 0;
break;
}
- // Check for positives
- if (strcasecmp(Argument,"yes") == 0 ||
- strcasecmp(Argument,"true") == 0 ||
- strcasecmp(Argument,"with") == 0 ||
- strcasecmp(Argument,"enable") == 0)
+ // Check for boolean
+ Sense = StringToBool(Argument);
+ if (Sense >= 0)
{
- Sense = 1;
-
// Eat the argument
if (Argument != Buffer)
{
break;
}
- // Check for negatives
- if (strcasecmp(Argument,"no") == 0 ||
- strcasecmp(Argument,"false") == 0 ||
- strcasecmp(Argument,"without") == 0 ||
- strcasecmp(Argument,"disable") == 0)
- {
- Sense = 0;
-
- // Eat the argument
- if (Argument != Buffer)
- {
- Opt += strlen(Opt);
- I += IncI;
- }
- break;
- }
-
if (CertainArg == true)
- return _error->Error("Sense %s is not understood, try true or false.",Argument);
+ return _error->Error(_("Sense %s is not understood, try true or false."),Argument);
Argument = 0;
}
return true;
}
/*}}}*/
+// CommandLine::FileSize - Count the number of filenames /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+unsigned int CommandLine::FileSize() const
+{
+ unsigned int Count = 0;
+ for (const char **I = FileList; I != 0 && *I != 0; I++)
+ Count++;
+ return Count;
+}
+ /*}}}*/
+// CommandLine::DispatchArg - Do something with the first arg /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool CommandLine::DispatchArg(Dispatch *Map,bool NoMatch)
+{
+ int I;
+ for (I = 0; Map[I].Match != 0; I++)
+ {
+ if (strcmp(FileList[0],Map[I].Match) == 0)
+ {
+ bool Res = Map[I].Handler(*this);
+ if (Res == false && _error->PendingError() == false)
+ _error->Error("Handler silently failed");
+ return Res;
+ }
+ }
+
+ // No matching name
+ if (Map[I].Match == 0)
+ {
+ if (NoMatch == true)
+ _error->Error(_("Invalid operation %s"),FileList[0]);
+ }
+
+ return false;
+}
+ /*}}}*/
+// CommandLine::SaveInConfig - for output later in a logfile or so /*{{{*/
+// ---------------------------------------------------------------------
+/* We save the commandline here to have it around later for e.g. logging.
+ It feels a bit like a hack here and isn't bulletproof, but it is better
+ than nothing after all. */
+void CommandLine::SaveInConfig(unsigned int const &argc, char const * const * const argv)
+{
+ char cmdline[100 + argc * 50];
+ memset(cmdline, 0, sizeof(cmdline));
+ unsigned int length = 0;
+ bool lastWasOption = false;
+ bool closeQuote = false;
+ for (unsigned int i = 0; i < argc && length < sizeof(cmdline); ++i, ++length)
+ {
+ for (unsigned int j = 0; argv[i][j] != '\0' && length < sizeof(cmdline)-1; ++j, ++length)
+ {
+ cmdline[length] = argv[i][j];
+ if (lastWasOption == true && argv[i][j] == '=')
+ {
+ // That is possibly an option: Quote it if it includes spaces,
+ // the benefit is that this will eliminate also most false positives
+ const char* c = strchr(&argv[i][j+1], ' ');
+ if (c == NULL) continue;
+ cmdline[++length] = '"';
+ closeQuote = true;
+ }
+ }
+ if (closeQuote == true)
+ cmdline[length++] = '"';
+ // Problem: detects also --hello
+ if (cmdline[length-1] == 'o')
+ lastWasOption = true;
+ cmdline[length] = ' ';
+ }
+ cmdline[--length] = '\0';
+ _config->Set("CommandLine::AsString", cmdline);
+}
+ /*}}}*/
+CommandLine::Args CommandLine::MakeArgs(char ShortOpt, char const *LongOpt, char const *ConfName, unsigned long Flags)/*{{{*/
+{
+ /* In theory, this should be a constructor for CommandLine::Args instead,
+ but this breaks compatibility as gcc thinks this is a c++11 initializer_list */
+ CommandLine::Args arg;
+ arg.ShortOpt = ShortOpt;
+ arg.LongOpt = LongOpt;
+ arg.ConfName = ConfName;
+ arg.Flags = Flags;
+ return arg;
+}
+ /*}}}*/
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