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Posted by qazwart on 07/22/07 02:10
On Jul 19, 12:33 pm, ZeldorBlat <zeldorb...@gmail.com> wrote:
> Before running the command echo out the value of $cmd to make sure it
> is what you think it is.
That's what I did with the "DEBUG" line. Here it is printing out from
my code when "neo" is hard coded:
DEBUG: if (!( = popen("/usr/local/bin/cvs -d :pserver:build@aladdin:/
tools/CVSROOT -q rlog -NS -rNEO-199::NEO-210 neo 2>&1", 'r'))) {
And, here is the second example when "neo" was read in from a
variable:
DEBUG: if (!( = popen("/usr/local/bin/cvs -d :pserver:build@aladdin:/
tools/CVSROOT -q rlog -NS -rNEO-199::NEO-210 neo 2>&1", 'r'))) {
See the difference? Neither did I. If I did this in Perl on a
terminal, I'd see the NL, but in HTML, NLs and multiple spaces aren't
normally displayed in the browser.
I had a colleague recommend that I print out the value of
"$cvs_module", and I had put quotes around it. That displayed as:
DEBUG: $cvs_module = "neo "
The "space" on the end clued me in that this might be an issue, and
sure enough, when I "trimmed" $cvs_module, the program worked.
I did learn one lesson: My "DEBUG" function needs to surround the
output with <pre></pre> tags. That way, I would have seen the NL in
the output.
> On Jul 18, 6:26 pm, qazwart <qazw...@gmail.com> wrote:
>
>
>
> > I am reading from a "cvs rlog" command, and I need both the STDOUT and
> > STDERR. Unfortunately, something very strange is happening. If I do
> > this:
>
> > $cmd = "$cvs_cmd -q rlog -NS -r$from_label::$to_label neo 2>&1"; //
> > Hard coded module
> > DEBUG ("if (!($cvs_fh = popen(\"$cmd\", 'r'))) {");
> > if (!($cvs_fh = popen("$cmd", 'r'))) {
> > generate_error("Canot open command \"$cmd\" for reading");
> > }
> > $exam_file_flag = false;
> > $inside_revision_flag = false;
> > $inside_comment_flag = false;
> > print "Generating Initial Release Information: ";
> > flush();
> > while($line = fgets($cvs_fh)) {
> > DEBUG ("....line = \"$line\"");
>
> > I get the combined STDOUT and STDERR in my while loop. However if I do
> > this:
>
> > $cvs_module = "neo"
> > $cmd = "$cvs_cmd -q rlog -NS -r$from_label::$to_label $cvs_module
> > 2>&1"; //Use variable for module
> > DEBUG ("if (!($cvs_fh = popen(\"$cmd\", 'r'))) {");
> > if (!($cvs_fh = popen("$cmd", 'r'))) {
> > generate_error("Canot open command \"$cmd\" for reading");
> > }
> > $exam_file_flag = false;
> > $inside_revision_flag = false;
> > $inside_comment_flag = false;
> > print "Generating Initial Release Information: ";
> > flush();
> > while($line = fgets($cvs_fh)) {
> > DEBUG ("....line = \"$line\"");
>
> > I don't get STDERR in my while loop.
>
> > Note the "DEBUG" line. This is a little routine I wrote to help me see
> > what is going on. Here is the output of the DEBUG line in the first
> > code example:
>
> > DEBUG: if (!( = popen("/usr/local/bin/cvs -d :pserver:build@aladdin:/
> > tools/CVSROOT -q rlog -NS -rNEO-199::NEO-210 neo 2>&1", 'r'))) {
>
> > Here is the output of the "DEBUG" line in the second code example:
>
> > DEBUG: if (!( = popen("/usr/local/bin/cvs -d :pserver:build@aladdin:/
> > tools/CVSROOT -q rlog -NS -rNEO-199::NEO-210 neo 2>&1", 'r'))) {
>
> > Is there something I should be looking for?
>
> Before running the command echo out the value of $cmd to make sure it
> is what you think it is.
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