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Message-ID: | <558DAD1E.7060307@raelity.com> |
Date: | Fri, 26 Jun 2015 12:50:54 -0700 |
From: | Ernie Rael <err AT raelity DOT com> |
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To: | cygwin AT cygwin DOT com |
Subject: | Re: Problem passing file names with embedded space to Windows executable via bash function |
References: | <loom DOT 20150626T183854-995 AT post DOT gmane DOT org> |
In-Reply-To: | <loom.20150626T183854-995@post.gmane.org> |
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On 6/26/2015 12:06 PM, JJ Ottusch wrote: > I am trying to define a function in my '.bash_profile' that takes a file or > list of files as an argument and passes the list to a Windows executable > after converting all the filenames to full path filenames with 'cygpath'. I use something similar to this, perhaps it would meet your needs. You may want to use different option to cygpath. #!/usr/bin/bash targs() { if (($# == 0)); then args=() else IFS=$'\n' args=($(cygpath -m -- "$@")) IFS=$' \t\n' fi for i in "${args[@]}"; do echo "'$i'"; done some_command "${args[@]}" } -ernie > > The whole point of the function is to use 'cygpath' to put the filenames in a > Windows compatible format for me so I don't have to do it every time I call > the Windows executable from a CYGWIN term. > > My function works fine except in cases where any part of the path or filename > contains a space. In that case the list of arguments the Windows executable > sees is incorrectly broken apart by the embedded spaces. I can verify this by > looking at argc. > > > Here are some examples with comments. All commands run from > '/cygdrive/c/Temp/Part1\ Part2/' in a CYGWIN RXVT term. > > > Let the windows executable be named 'oglv64' and start with the usual > int main(int argc, char** argv) > Let there be two files it can take as arguments named 'file1' and 'file2' in > the directory '/cygdrive/c/Temp/Part1 Part2', where 'Part1 Part2' is a > subdirectory name with an embedded space. Let the defined function be named > 'foo'. > > > 1. Show the files > > $ dir /cygdrive/c/Temp/Part1\ Part2/ > file1* file2* > > 2. Test the function with 'echo' instead of 'oglv64'. 'cygpath' works > correctly on each file, but there is a bare space between 'Part1' and 'Part2' > which can be expected to cause problems with 'oglv64'. > > $ foo() { echo `cygpath -am "$@"` ; }; foo file* > C:/Temp/Part1 Part2/file1 C:/Temp/Part1 Part2/file2 > > 3. So, escape the space. Looks good. > > $ foo() { echo `cygpath -am "$@" | sed 's/ /\\\ /'` ; }; foo file* > C:/Temp/Part1\ Part2/file1 C:/Temp/Part1\ Part2/file2 > > 4. Although I can't show it, the Window executable works exactly as desired > when given the above line as its input. argc=3 and 'oglv64' operates on the > two files as desired. > > $ oglv64 C:/Temp/Part1\ Part2/file1 C:/Temp/Part1\ Part2/file2 > > 5. Now try this inside the function definition. As shown below, this didn't > work. argc=5 instead of 3. > > $ foo() { oglv64 `cygpath -am "$@" | sed 's/ /\\\ /'` ; }; foo file* > Can't load C:/Temp/Part1\. > Can't load Part2/file1. > Can't load C:/Temp/Part1\. > Can't load Part2/file2. > > 6. Put the full argument in quotes and try again. The 'echo' result is > correct, but given on two separate lines. However, the Windows executable > sees argc=2 and thinks it's all one long filename. Wrong, as expected. > > $ foo() { echo "`cygpath -am \"$@\" | sed 's/ /\\\ /'`" ; }; foo file* > C:/Temp/Part1\ Part2/file1 > C:/Temp/Part1\ Part2/file2 > > $ foo() { oglv64 "`cygpath -am \"$@\" | sed 's/ /\\\ /'`" ; }; foo file* > Can't load C:/Temp/Part1\ Part2/file1 > C:/Temp/Part1\ Part2/file2. > > 7. Drop the escaped space and try forcing quotes at the end of each 'cygpath' > result. Looks fine with 'echo', but the Windows executable still sees argc=5 > rather than argc=3. > > $ foo() { echo `cygpath -am "$@" | sed 's/^/\"/;s/$/\"/'` ; }; foo file* > "C:/Temp/Part1 Part2/file1" "C:/Temp/Part1 Part2/file2" > > $ foo() { oglv64 `cygpath -am "$@" | sed 's/^/\"/;s/$/\"/'` ; }; foo file* > Can't load "C:/Temp/Part1. > Can't load Part2/file1". > Can't load "C:/Temp/Part1. > Can't load Part2/file2". > > 8 On the other hand, using the output from 'echo' as a direct argument to > 'oglv64' works fine. > > $ oglv64 "C:/Temp/Part1 Part2/file1" "C:/Temp/Part1 Part2/file2" > > > No success so far. I am looking to find a simple solution to this problem > (other than eliminating spaces from all file/directory names). It would have > multiple applications. > > jjo > > > -- > Problem reports: http://cygwin.com/problems.html > FAQ: http://cygwin.com/faq/ > Documentation: http://cygwin.com/docs.html > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > > > -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
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