I need to echo and export each variable like TEST, WORK. DEL
If:
1) your input is guaranteed to be properly delimited by single blanks always,
2) the item=value pairs will contain no further spaces
then the following may work, provided that you use a common shell (and not Ubuntus standard shell dash). Notice that you may need to add additional tests, trims and other measures to this skeleton because real-world input might not be as well-behaved as is ideal:
Code:
input="$1"
buf=""
while [ -n "$input" ] ; do
buf="${input##* }" # these two lines chop off
input="${input% ${buf}}" # one item=value pair after the other
echo "$buf"
eval export "$buf"
done
Note also that the input string is tokenized backwards, so that the input a=b c=d e=f will result in:
Hi,
When I implemented this on my Makefile, I got errors
Code:
while [ -n "nput" ] ; do
/bin/bash: -c: line 1: syntax error: unexpected end of file
code:
Code:
input=NEED="TEST=Name WORK=Ps DEL=let"
all:
while [ -n "$(input)" ] ; do
buf="${input##* }" # these two lines chop off
input="${input% ${buf}}" # one item=value pair after the other
echo "$buf"
eval export "$buf"
done
Do you have any idea on this and changes needed to get the output as needed please.
Do you have any idea on this and changes needed to get the output as needed please.
yes, and this probably gives a hint:
Quote:
Originally Posted by ricky-row
Code:
while [ -n "nput" ] ; do
/bin/bash: -c: line 1: syntax error: unexpected end of file
Notice that "$input" is not "$input" any more but "nput". I suppose half of the code (which is basically all variable expansion) is interpreted away by the make-utility itself. Also notice that make will call every command in a separate shell, therefore multi-line commands/scripts like the one i gave you will not work this way, because they need to maintain context from one line to the next.
Put the code into a script file and call that instead of directly including it into a make-rule. Furthermore, this:
Quote:
Originally Posted by ricky-row
Code:
input=NEED="TEST=Name WORK=Ps DEL=let"
looks different than what you gave as example input and will fail with the code i wrote anyway. Have you read the caveats i included in my first answer?
Thanks Bakunin,
But When I tried your code in the script its not stopping. It keeps on printing TEST=Name infinitely. Could you give some correction on this, please
Thanks Bakunin,
But When I tried your code in the script its not stopping. It keeps on printing TEST=Name infinitely. Could you give some correction on this, please
That is - as i have said already - because the format of your input string is not in the same format as in your post #1. This:
Code:
input=NEED="TEST=Name WORK=Ps DEL=let"
does not make any sense syntactically and it is not of the form item1=value1 item2=value2 item3=value3 ... which would be necessary for my algorithm to work - as i have already stated in my first answer!
Give me a REAL EXAMPLE OF WHAT YOU WANT TO PROCESS and i will give you a real solution, because what you have shown me is not only different than what you first asked to process, it will also generate a syntax error if you, to quote yourself:
Quote:
I need to echo and export each variable like TEST, WORK. DEL
because
Code:
input=NEED="TEST=Na...
is not a syntactically correct shell statement. Otherwise, tell me what the expected outcome should be. Show me the statement my script should produce from this input.
Hi,
I am really sorry for the confusions, I tried like this way
Code:
hacker@hacker:~$ cat test.sh
#!/bin/bash
NEED="TEST=Name WORK=Ps DEL=let"
buf=""
while [ -n "$NEED" ] ; do
buf="${NEED##* }" # these two lines chop off
NEED="${NEED% ${buf}}" # one item=value pair after the other
echo "$buf"
eval export "$buf"
done
where I got my output as
TEST=Name
TEST=Name
TEST=Name
TEST=Name
``
``.
``
The output is not ending,
My Real Need:
where I have declared the variable in my MAKEFILE
Code:
NEED="TEST=Name WORK=Ps DEL=let"
with the same format with single space delimiting but it not just only three, it can be 'n' number.
Now I need to parse each item with its value and export them for further usage in the same MAKEFILE , as you said a=b, c=d , e=f , g=h etc..
Like say, I have done parsing
TEST=Name
WORK=Ps
DEL=let
In the same MAKEFILE, I have to make use of this WORK, where
Code:
echo $(WORK)
Ps
should print. I hope I cleared the context of my need.
Any help please, I am rolling my head to get this done.
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