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Full Discussion: string checking
Top Forums Shell Programming and Scripting string checking Post 302210963 by Tytalus on Wednesday 2nd of July 2008 10:10:09 AM
Old 07-02-2008
Code:
check to see if it passes a basic math test ;-)

i.e. something like expr:

#  expr hello + 1
expr: non-numeric argument

#  expr 2hello + 1
expr: non-numeric argument

#  expr 2 + 1
3

mix this with an if and you're away...

 

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ost::CommandOptionParse(3)				     Library Functions Manual					ost::CommandOptionParse(3)

NAME
ost::CommandOptionParse - This is the CommandOptionParse interface class. SYNOPSIS
#include <cmdoptns.h> Public Member Functions virtual ~CommandOptionParse ()=0 Virtual destructor needed so that the object may be correctly deleted. virtual bool argsHaveError ()=0 Get the value of the error flag set if the parser encountered errors. virtual const char * printErrors ()=0 Return a string of text describing the list of errors encountered. virtual const char * printUsage ()=0 Return a string that contains the usage description of this list of paramaters. virtual void registerError (const char *errMsg)=0 Register an error with this parser. virtual void performTask ()=0 The method should be invoked by the main code once it has determined that the application should be started. Detailed Description This is the CommandOptionParse interface class. To implement this object you can call makeCommandOptionParse(); This will instantiate a dynamically allocated version of this class and parse the command line for the list of command options that are passed in. Author: Gianni Mariani gianni@mariani.ws Examples: cmdlineopt.cpp. Constructor &; Destructor Documentation virtual ost::CommandOptionParse::~CommandOptionParse () [pure virtual] Virtual destructor needed so that the object may be correctly deleted. Member Function Documentation virtual bool ost::CommandOptionParse::argsHaveError () [pure virtual] Get the value of the error flag set if the parser encountered errors. Examples: cmdlineopt.cpp. virtual void ost::CommandOptionParse::performTask () [pure virtual] The method should be invoked by the main code once it has determined that the application should be started. Examples: cmdlineopt.cpp. virtual const char* ost::CommandOptionParse::printErrors () [pure virtual] Return a string of text describing the list of errors encountered. Examples: cmdlineopt.cpp. virtual const char* ost::CommandOptionParse::printUsage () [pure virtual] Return a string that contains the usage description of this list of paramaters. Examples: cmdlineopt.cpp. virtual void ost::CommandOptionParse::registerError (const char *errMsg) [pure virtual] Register an error with this parser. This string will be appended to the errors already buffered in this object. Examples: cmdlineopt.cpp. Author Generated automatically by Doxygen for GNU CommonC++ from the source code. GNU CommonC++ Sat Jun 23 2012 ost::CommandOptionParse(3)
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