--- /dev/null
+#
+# The perl script requires bindings for the following
+# variables to be prepended:
+# DEFAULT_TMPDIR
+# CONTEXTDIFF
+#
+
+$Pgm = $0; $Pgm =~ s/.*\/([^\/]+)$/\1/;
+#
+# set up signal handler
+sub quit_upon_signal { &rm_temp_files_and_exit(); }
+$SIG{'INT'} = 'quit_upon_signal';
+$SIG{'QUIT'} = 'quit_upon_signal';
+#
+$Verbose = 0;
+if ($ARGV[0] eq '-v') {
+ $Verbose = 1;
+ shift(@ARGV);
+}
+#
+die "$Pgm: must have exactly one argument\n" if $#ARGV != 0;
+# figure out input file and its filename root
+if (-f $ARGV[0]) {
+ $TeX_input = $ARGV[0];
+ if ($TeX_input =~ /(.+)\.[^\.\/\n]+$/) {
+ $TeX_root = $1;
+ } else {
+ $TeX_root = $TeX_input;
+ }
+} elsif (-f $ARGV[0].'.tex') {
+ $TeX_input = $ARGV[0].'.tex';
+ $TeX_root = $ARGV[0];
+} else {
+ die "$Pgm: input file $ARGV[0] doesn't exist\n";
+}
+
+if ( $ENV{'TMPDIR'} ) { # where to make tmp file names
+ $Tmp_prefix = $ENV{'TMPDIR'} ;
+} else {
+ $Tmp_prefix ="$DEFAULT_TMPDIR";
+ $ENV{'TMPDIR'} = "$DEFAULT_TMPDIR"; # set the env var as well
+}
+
+sub rm_temp_files {
+ system("rm -f $Tmp_prefix/ltx-*.$$");
+}
+sub rm_temp_files_and_exit {
+ system("rm -f $Tmp_prefix/ltx-*.$$");
+ exit(1);
+}
+$SIG{'INT'} = 'rm_temp_files_and_exit';
+$SIG{'QUIT'} = 'rm_temp_files_and_exit';
+
+sub die_gracefully {
+ local($msg) = @_;
+
+ print STDERR $msg;
+ &rm_temp_files_and_exit();
+}
+
+# must read through root file to see if a \bibliography
+# is there...
+$Bibliography_requested = 0;
+open(TEXIF, "<$TeX_input")
+ || &die_gracefully("$Pgm: Can't read $TeX_input\n");
+while (<TEXIF>) {
+ $Bibliography_requested = 1 if /^\\bibliography/;
+}
+close(TEXIF);
+&die_gracefully("$Pgm: reading $TeX_input had errors\n") if $? >> 8;
+
+# run latex first time (?)
+&run_latex(); # sets $Says_labels_changed
+$Times_run = 1;
+
+while (&something_more_needed()) {
+
+ print STDERR "labels_changed=$Says_label_changed;bibtex_needed=$BibTeX_run_needed;makeindex_needed=$MakeIndex_run_needed\n" if $Verbose;
+
+ if ($BibTeX_run_needed) {
+ &run_bibtex();
+ }
+ if ($MakeIndex_run_needed) {
+ unlink "$TeX_root.ind";
+ (system("makeindex $TeX_root.idx") >> 8)
+ && &die_gracefully("$Pgm: makeindex $TeX_root.idx had errors\n");
+ }
+
+ # save (copy) .aux file as .aux-prev file for future ref
+ # ditto for .idx file
+ unlink "$TeX_root.aux-prev";
+ (system("cp $TeX_root.aux $TeX_root.aux-prev") >> 8)
+ && &die_gracefully("$Pgm: cp $TeX_root.aux $TeX_root.aux-prev failed\n");
+ if (-f "$TeX_root.idx") {
+ unlink "$TeX_root.idx-prev";
+ (system("cp $TeX_root.idx $TeX_root.idx-prev") >> 8)
+ && &die_gracefully("$Pgm: cp $TeX_root.idx $TeX_root.idx-prev failed\n");
+ }
+
+ # run latex again
+ &run_latex(); # sets $Says_labels_changed
+ $Times_run++;
+
+ if ($Times_run >= 4) {
+ print STDERR "*** I don't run LaTeX more than four times;\n";
+ print STDERR "*** Something is probably wrong...\n";
+ &rm_temp_files_and_exit();
+ }
+}
+&rm_temp_files();
+exit(0);
+
+sub run_latex {
+ $Says_labels_changed = 0;
+ $Multiply_defined_labels = 0;
+
+ select(STDERR); $| = 1; select(STDOUT); # no buffering on STDERR
+ print STDERR "$Pgm: *** running LaTeX...\n" if $Verbose;
+ unlink "$TeX_root.dvi";
+
+ open(LTXPIPE, "latex $TeX_input 2>&1 |")
+ || &die_gracefully("$Pgm: Can't run latex pipe\n");
+ while (<LTXPIPE>) {
+ $Multiply_defined_labels = 1 if /^LaTeX Warning: Label .* multiply defined/;
+ $Says_labels_changed = 1 if /^LaTeX Warning: Label\(s\) may have changed/
+ && ! $Multiply_defined_labels;
+ print STDERR $_;
+ }
+ close(LTXPIPE);
+ &die_gracefully("$Pgm: LaTeX run had errors\n") if $? >> 8;
+
+ # sort .idx file, because this helps makeindex
+ # (can you say `bug'?)
+ if (-f "$TeX_root.idx") {
+ print STDERR "$Pgm: *** sorting $TeX_root.idx...\n" if $Verbose;
+ (system("sort $TeX_root.idx -o $TeX_root.idx") >> 8)
+ && &die_gracefully("$Pgm: sorting $TeX_root.idx failed\n");
+ }
+
+}
+
+sub run_bibtex { # ugly because bibtex doesn't return a correct error status
+ local($bibtex_had_errors) = 0;
+
+ print STDERR "$Pgm: *** running BibTeX...\n" if $Verbose;
+ unlink "$TeX_root.bbl";
+
+ $| = 1; # no buffering
+ open(BIBTXPIPE, "bibtex $TeX_root 2>&1 |")
+ || &die_gracefully("$Pgm: Can't run bibtex pipe\n");
+ while (<BIBTXPIPE>) {
+ $bibtex_had_errors = 1 if /^\(There.*error message(s)?\)$/;
+ print STDERR $_;
+ }
+ close(BIBTXPIPE);
+ &die_gracefully("$Pgm: BibTeX run had errors\n")
+ if $? >> 8 || $bibtex_had_errors;
+}
+
+sub something_more_needed {
+ # returns 1 or 0 if we need to run LaTeX
+ # possibly preceded by bibtex and/or makeindex run
+
+ # $Says_labels_changed was set by previous &run_latex...
+ $BibTeX_run_needed = 0;
+ $MakeIndex_run_needed = 0;
+
+ if ( ! -f ($TeX_root . '.aux-prev')) { # this was the first run
+
+ print STDERR "$Pgm: *** 'twas first run of LaTeX on $TeX_input\n" if $Verbose;
+
+ # we need makeindex to run if a non-zero-sized .idx file exists
+ #
+ $MakeIndex_run_needed = 1
+ if -f "$TeX_root.idx" && -s "$TeX_root.idx";
+
+ # we need bibtex to run if there are \citations in the .aux file
+ #
+ &slurp_aux_file('aux');
+ $BibTeX_run_needed = 1
+ if $Bibliography_requested &&
+ -f "$Tmp_prefix/ltx-aux-cite.$$" &&
+ -s "$Tmp_prefix/ltx-aux-cite.$$";
+
+
+ } else { # ltx had been run before (.aux-prev/.idx-prev files exist)
+
+ # slurp both .aux and .aux-prev files
+ &slurp_aux_file('aux');
+ &slurp_aux_file('aux-prev');
+
+ local($tmp_pre) = "$Tmp_prefix/ltx";
+
+ if ((-s "$tmp_pre-.aux-cite.$$") # there are still \cite's in there
+ && (system("cmp -s $tmp_pre-.aux-cite.$$ $tmp_pre-.aux-prev-cite.$$") >> 8)) {
+ $BibTeX_run_needed = 1 if $Bibliography_requested;
+ if ($Verbose) {
+ system("$CONTEXT_DIFF $tmp_pre-.aux-prev-cite.$$ $tmp_pre-.aux-cite.$$");
+ }
+ }
+
+ if (-f "$TeX_root.idx") {
+ $MakeIndex_run_needed =
+ (system("cmp -s $TeX_root.idx $TeX_root.idx-prev") >> 8) ? 1 : 0;
+ if ($MakeIndex_run_needed && $Verbose) {
+ system("$CONTEXT_DIFF $TeX_root.idx-prev $TeX_root.idx");
+ }
+ }
+ }
+
+ $Says_labels_changed || $BibTeX_run_needed || $MakeIndex_run_needed;
+}
+
+sub slurp_aux_file {
+ local($ext) = @_;
+
+ # copy all citations from slurpfile into $Tmp_prefix/ltx-$ext-cite.$$
+
+ open(SLURPF,"< $TeX_root.$ext")
+ || &die_gracefully("$Pgm: Can't open $TeX_root.$ext for reading\n");
+ open(CITEF,"> $Tmp_prefix/ltx-$ext-cite.$$")
+ || &die_gracefully("$Pgm: Can't open $Tmp_prefix/ltx-$ext-cite.$$ for writing\n");
+
+ while (<SLURPF>) {
+ print CITEF $_ if /\\citation/;
+ }
+ close(CITEF);
+ close(SLURPF);
+}
projects / ghc-hetmet.git / blobdiff