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Full Discussion: Function into a condition ?
Top Forums Shell Programming and Scripting Function into a condition ? Post 302781939 by amazigh42 on Monday 18th of March 2013 06:02:29 AM
Old 03-18-2013
Code:
f1() {
echo $1 $2 $3 "line" $4

Here f1 is a simple function to test the function g1.
g1 is a function which tests the parameters format of an input file.
Theses parameters are YEAR BEGIN_hour END_hour.
Month must be between 1 and 12
Day must be between 1 and 31
Hour must be between 00 and 23 (2 digits)
Minutes must be between 00 and 59 (2 digits)

case 0)
If the script is launched without argument, an inputfile named list_file will be created with comments.
The main engine ie case 1)
If the inputfile exists, the script tests if there are parameters.
Then it parses each parameters to check the validity of the format

When i launch the script, there are malfunctions.
1) Each line with right or wrong parameters are printed twice.
I would like the line that has an error is not printed. It should only return the error code.
And others to be edited once.

I hope to be clearer.

Have a nice day.

Code:
case $# in
        0)      echo -e "# comment1\n# comment2" > list_file
                read -p "Please fill in this list_file: "

                echo $REPLY
                ;;
        1)     if [ ! -f "$1" ]
               then  > $1 && echo -e "# comment1\n# comment1" > $1
                        read -p "Please fill in "$1": "

                        echo $REPLY
               else
                        if [ -f "$1" -a $(grep -v '^#' "$1" | wc -l ) -ne 0 | $(g1 $arg1 $arg2 $arg3) -ne 0 ] # line 58
                        then
                                grep -v '^#' "$1" |
                                                while read arg1 arg2 arg3
                                                do f1 $arg1 $arg2 $arg3
                                                done
                         else
                                        echo "Errors found in date/time - exiting now" >&2
                                        exit 1
                          fi
                                read -p "Please fill in "$1": "
                                echo $REPLY
                fi
               ;;

        3)      echo -e "# Fill in the 3 variables below\n# DATE HOUR MN" > $1
                echo $2 $3 $4 >> "$1"                  # concatenation of variables in $ 1
                                grep -v '^#' "$1" | # Omits the comments
                                while read arg1 arg2 arg3 # Parse the parameters
                                do f1 $arg1 $arg2 $arg3 # Processing parameters for the function f1
                                done
                ;;
 *)      echo "error msg"; exit
esac

 

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LEARN ABOUT DEBIAN

shevek_istring

shevek::istring(3)					     Library Functions Manual						shevek::istring(3)

NAME

       shevek::istring -

       shevek::istring is a C++ version of scanf.

SYNOPSIS

       #include <iostring.hh>

   Public Member Functions
       istring ()
	   Create a new istring with no data.
       istring (Glib::ustring const &str)
	   Create a new istring with data.
       void init (Glib::ustring const &str)
	   Set new data to an existing istring.
       void push ()
	   Push the current position to the stack so it can be restored later.
       int pop (bool keep=false)
	   Pop the last pushed position from the stack.
       void reset ()
	   Set the current position to 0, but don't change the stack.
       Glib::ustring rest () const
	   Get remaining string.
       void skip (Glib::ustring::size_type p)
	   Skip some characters.
       bool operator() (Glib::ustring const &format)
	   Read a constant string from the input.
       template<typename T1 > bool operator() (Glib::ustring const &format, T1 &arg1)
	   Read a string containing one argument from the input.
       template<typename T1 , typename T2 > bool operator() (Glib::ustring const &format, T1 &arg1, T2 &arg2)
	   Read a string containing two arguments from the input.
       template<typename T1 , typename T2 , typename T3 > bool operator() (Glib::ustring const &format, T1 &arg1, T2 &arg2, T3 &arg3)
	   Read a string containing three arguments from the input.
       template<typename T1 , typename T2 , typename T3 , typename T4 > bool operator() (Glib::ustring const &format, T1 &arg1, T2 &arg2, T3
	   &arg3, T4 &arg4)
	   Read a string containing four arguments from the input.
       template<typename T1 , typename T2 , typename T3 , typename T4 , typename T5 > bool operator() (Glib::ustring const &format, T1 &arg1, T2
	   &arg2, T3 &arg3, T4 &arg4, T5 &arg5)
	   Read a string containing five arguments from the input.
       template<typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 > bool operator() (Glib::ustring const &format,
	   T1 &arg1, T2 &arg2, T3 &arg3, T4 &arg4, T5 &arg5, T6 &arg6)
	   Read a string containing six arguments from the input.
       template<typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 > bool operator() (Glib::ustring
	   const &format, T1 &arg1, T2 &arg2, T3 &arg3, T4 &arg4, T5 &arg5, T6 &arg6, T7 &arg7)
	   Read a string containing seven arguments from the input.
       template<typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 > bool operator()
	   (Glib::ustring const &format, T1 &arg1, T2 &arg2, T3 &arg3, T4 &arg4, T5 &arg5, T6 &arg6, T7 &arg7, T8 &arg8)
	   Read a string containing eight arguments from the input.

   Static Public Member Functions
       template<typename T > static T direct (Glib::ustring const &data, Glib::ustring const &format, T def=T())
	   Read a variable from given data and return it.

Detailed Description
       shevek::istring is a C++ version of scanf.

       It uses templates to allow expanding it to user-defined types, but it still uses a format string to make it better translatable.

Member Function Documentation
   template<typename T > static T shevek::istring::direct (Glib::ustring const &data, Glib::ustring const &format, Tdef = T ()) [inline, static]
       Read a variable from given data and return it. This allows using a shevek::istring in an expression without the need to create a new
       variable for it. If the input doesn't match the format, def is returned.

   int shevek::istring::pop (boolkeep = false)
       Pop the last pushed position from the stack. If keep is true or not given, the current position is restored to the last position. If it is
       false, the current position is not changed.

Author
       Generated automatically by Doxygen for libshevek from the source code.

libshevek							  Fri May 11 2012						shevek::istring(3)
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