Ben Pfaff [Sat, 24 Nov 2012 22:14:16 +0000 (14:14 -0800)]
INPUT PROGRAM: Don't break out of INPUT PROGRAM on interactive error.
Until now, any erroneous command typed within an input program at an
interactive command prompt implicitly "broke out" of the input program,
causing confusing behavior. This commit fixes the problem: commands
following an erroneous command within INPUT PROGRAM continue to be part of
the input program.
Ben Pfaff [Sat, 24 Nov 2012 21:47:06 +0000 (13:47 -0800)]
DATA LIST FREE: Warn when a quoted string is not followed by a delimiter.
A field parsed by DATA LIST FREE (or LIST) is either quoted or unquoted.
When it is quoted, this means that the entire field has to be quoted, that
is, it is not possible to quote some initial part of the field, then leave
some part of it unquoted (then possibly quote an additional part, etc.).
That means that the quoted portion should be followed by a delimiter,
such as white space, a comma, or end of line, but PSPP didn't warn when
it was not. This commit makes PSPP warn in this situation, which makes
errors in the input easier to find.
Bug #26522.
Reported by Pascal Barbedor <pbarbedor@gmail.com>.
Ben Pfaff [Sat, 24 Nov 2012 20:03:42 +0000 (12:03 -0800)]
output: Make default output file name depend on the format.
Before this commit, "-O html" caused HTML output to be written to a file
named "-", which is confusing. After this commit, it is written to a file
named "pspp.html". Similarly for other output drivers, except that text
and CSV output are still written to stdout by default.
John Darrington [Fri, 23 Nov 2012 18:49:03 +0000 (19:49 +0100)]
Refactoring: common function set_sensitivity from toggle
Many dialog boxes have a signal handler to set the sensitivity
of a widget, according to the state of a toggle button. Until
now, they had all written their own.
John Darrington [Fri, 23 Nov 2012 08:01:36 +0000 (09:01 +0100)]
Logistic Regression: Ignore cases with missing dependent variables.
Prior to this change, cases with missing values in the predictor
variables were ignored, but cases with missing values only in the
dependent variable would provoke an error. Subsequent to this change
such cases are also ignored. This seems to be the behaviour of other
software, despite what their documentation may suggest.
John Darrington [Wed, 21 Nov 2012 21:13:27 +0000 (22:13 +0100)]
Logistic Regression: Calculate the logs of the likelihood instead of the raw value.
The likelihood values can become extremely large which can result in
lost precision in a double. This change therefore calculates the
logarithms of the likelihoods instead of their actual value.
John Darrington [Tue, 20 Nov 2012 11:32:34 +0000 (12:32 +0100)]
Fix (again) problems displaying a GtkSourceView widget on Cygwin
Under certain compiler options, the effect of the gtk_*get_type
function call was optimised away. This change fixes that. It
seems that both static and volatile are necessary, in order to
avoid the compiler from complaining and/or optimising the call
away.
John Darrington [Tue, 20 Nov 2012 09:32:14 +0000 (10:32 +0100)]
Logistic Regression: Optimise the classification calculations.
Instead of calculating the logit of the prediction for each case,
pre-calculate the inverse logit of the threshold before the process
starts. This should give a small performance gain..
John Darrington [Mon, 19 Nov 2012 10:15:49 +0000 (11:15 +0100)]
Fix possible memory corruption when creating dialogs with selectors.
The PsppireSelector widget's class structure contains a map of selectors
indexed by the source widget with which they are associated. Until now, that
map was never depopulated. This could have caused problems if newly created
widgets happened to use the same address as old, destroyed ones. This change
removes selectors from the map upon destruction.
John Darrington [Tue, 13 Nov 2012 18:00:38 +0000 (19:00 +0100)]
Remove _base_init and base_finalize functions from psppire-selector
Gtk+ documentation recommends these are avoided in modern code.
They differ only from class_init in the case where the class has subclasses,
which PsppireSelector does not.
John Darrington [Sun, 11 Nov 2012 13:19:05 +0000 (14:19 +0100)]
Logistic Regression: Added categorical variable support
With this commit Logistic Regression now supports the /CATEGORICALS
subcommand, allowing a dependent variable to be regressed against one
or more categorical predictor variables.
John Darrington [Thu, 8 Nov 2012 13:33:51 +0000 (14:33 +0100)]
Categoricals.c: Ensure that categories are processed order of their categorical variable(s).
Some procedures require that categoricals are processed in a particular order.
Mathematically, the order is irrelevant, however for reporting purposes it is
sometimes required. This change adds a level of indirection, so that the codes
are allocated in ascending order of the categorical variable.
John Darrington [Tue, 6 Nov 2012 19:50:33 +0000 (20:50 +0100)]
Categoricals: Provide separate functions for effects and dummy coding.
Until now, the function categoricals_get_code_for_case returned the
"effects" coding (ie, a bipolar code). Some uses require "dummy" coding
(a binary coding). This change provides seperate functions to return
whatever is desired.
John Darrington [Fri, 2 Nov 2012 14:31:45 +0000 (15:31 +0100)]
Categoricals: Accept null pointer as subject.
Previously, certain functions would crash, or behave badly if their
argument was NULL. This change makes them do nothing, or return
default values, as appropriate. This saves callers having to always
test for NULL.
Ben Pfaff [Fri, 5 Oct 2012 04:22:42 +0000 (21:22 -0700)]
configure.ac: Increase pango minimum version from 1.20 to 1.22
Commit bd4d6e7453 (cairo: Avoid deprecated
pango_cairo_font_map_create_context().) added a dependency on pango
version 1.22 or later, but configure.ac only checked for version 1.20
or later. This commit fixes the discrepancy.
INSTALL already documented that Pango 1.22 or later was needed.
Ben Pfaff [Sun, 30 Sep 2012 19:29:33 +0000 (12:29 -0700)]
tests: Better isolate search text in test of error reporting.
Some GNU/Linux distributions print additional text on a segfault,
e.g. "Cannot exec debugger: No such file or directory", which this
test was seeing in output and interpreting as a failed test. This
commit fixes the problem by ignoring text up to the ***** line that
marks the start of the expected output.
Ben Pfaff [Wed, 26 Sep 2012 04:18:32 +0000 (21:18 -0700)]
Suppress GCC 4.7 warnings by changes to code that make it less clear.
I'm not entirely happy with these changes, because they make the code
slightly less obvious. However, it's still not really bad code, and
it's convenient to have a warning-free build.
Ben Pfaff [Wed, 26 Sep 2012 00:09:47 +0000 (17:09 -0700)]
gnumeric-reader: Add cast to suppress warning.
This suppresses a GCC warning for a mismatch between
xmlInputCloseCallback, which takes a "void *" parameter, and
gzclose(), which takes a "gzFile" (which is "struct gzFile_s *").
This came up with an upgrade from "squeeze" to "wheezy". I assume
that a gzclose prototype became visible or that gzFile changed away
from "void *".
An alternative would be to write a trampoline to just transform one
pointer type to the other, but the xmlReaderForIO() invocation
already has one function cast so a second cast doesn't make it much
worse.
Pango 1.30 that is in Debian "wheezy" has marked this function as
deprecated. The replacement pango_font_map_create_context() was
introduced in Pango 1.22, which was also in Debian "squeeze" (which
had Pango 1.28), so it seems safe to switch without worrying about
a Pango version check.
Ben Pfaff [Tue, 25 Sep 2012 22:36:50 +0000 (15:36 -0700)]
Remove variables assigned to but never used.
Each of the variables removed here was assigned a value that was
never used, the assignment didn't have any useful side effects, and
I don't see anything that the variable should have been used for.
Ben Pfaff [Tue, 25 Sep 2012 22:14:50 +0000 (15:14 -0700)]
expressions: Fix coercion of numbers to booleans at top level.
The check for the expected type in type_check() used the wrong
constant (a node type instead of an expression type) and so the
"if" test was never true. Also, OP_NUM_TO_BOOLEAN is binary, not
unary, so fixing just the test caused an assertion failure.
John Darrington [Thu, 20 Sep 2012 09:22:12 +0000 (11:22 +0200)]
src/data/data-out.c: Added assertion to catch negative values
If the contents of string does not contain a '.', then integer_digits
will end up negative, thus causing a crash later. This change adds
an assertion to catch this condition and thus make the diagnosis easier
should it ever occur.
John Darrington [Wed, 12 Sep 2012 07:26:21 +0000 (09:26 +0200)]
Perl Module: Avoid forcing scalar value into a pointer.
The code fragment: struct dictionary *dict = (void *) SvIV (dict_sv);
is dangerous. This fix uses the properl Perl XS mechanism to get
the pointer and the scalar associated with the dictionary.
Ben Pfaff [Mon, 20 Aug 2012 07:00:33 +0000 (00:00 -0700)]
sys-file-reader: Fix setjmp() technicality.
The C standards say that the compiler is allowed to optimize away
changes to local variables within a function between a call to
setjmp() and a later call to longjmp(), unless the local variables
are volatile-qualified.
The 'info' local variable in sfm_open_reader() fits this
description but wasn't volatile-qualified. This commit fixes that,
even though my compiler didn't in fact seem to have a problem with
the previous version.
Ben Pfaff [Mon, 20 Aug 2012 06:59:47 +0000 (23:59 -0700)]
sys-file-reader: Fix memory leak.
The C standards say that the compiler is allowed to optimize away
changes to local variables within a function between a call to
setjmp() and a later call to longjmp(), unless the local variables
are volatile-qualified.
The 'dict' local variable in sfm_open_reader() fits this
description but wasn't volatile-qualified. GCC in fact optimized
out the changes on my system, and this commit fixes that.
If text_to_value() fails for low_val, then this code would still
destroy high_val, even though high_val hadn't been initialized,
thus accessing indeterminate data.
Ben Pfaff [Sun, 19 Aug 2012 17:30:36 +0000 (10:30 -0700)]
psppire-dialog: Add "acceptable" predicate.
PsppireDialog already has a validity predicate that allows a dialog
to easily disable "OK" and other buttons when the dialog has not
yet been completely filled. It should usually be obvious to the
user why this is the case.
The upcoming GObjectification of the missing value dialog calls for
a different kind of predicate, one where the reason is not obvious
to the user (typically because he has just made a typo or does not
understand a variable's format). In this case, the user needs more
feedback, such as a message explaining the problem.
This commit therefore introduces a second kind of predicate, the
"accept" predicate. This predicate is only checked when the user
clicks on the "OK" button.
Ben Pfaff [Thu, 9 Aug 2012 06:27:32 +0000 (23:27 -0700)]
var-type-dialog: Convert to a GObject.
The one issue I can't figure out is why this changes the look of
the dialog box so that its height is the total height of all of
the widgets in the "middlebox", rather than the maximum height
actually needed.