diff options
Diffstat (limited to 'web/glasgow/lit2x-0.16/grasp-utils/scripts/ltx.prl')
-rw-r--r-- | web/glasgow/lit2x-0.16/grasp-utils/scripts/ltx.prl | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/web/glasgow/lit2x-0.16/grasp-utils/scripts/ltx.prl b/web/glasgow/lit2x-0.16/grasp-utils/scripts/ltx.prl new file mode 100644 index 0000000000..1bce758270 --- /dev/null +++ b/web/glasgow/lit2x-0.16/grasp-utils/scripts/ltx.prl @@ -0,0 +1,215 @@ +$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"; +} + +sub rm_temp_files { + system("rm -f $(TMPDIR)/ltx-*.$$"); +} +sub rm_temp_files_and_exit { + system("rm -f $(TMPDIR)/ltx-*.$$"); + 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 $Bibliography_requested && + -f "$(TMPDIR)/ltx-aux-cite.$$" && + -s "$(TMPDIR)/ltx-aux-cite.$$"; + + + } 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($tmp_pre) = "$(TMPDIR)/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.$$") >> 8)) { + $BibTeX_run_needed = 1 if $Bibliography_requested; + if ($Verbose) { + system("diff -c1 $tmp_pre-.aux-prev-cite.$$ $tmp_pre-.aux-cite.$$"); + } + } + + if (-f "$TeX_root.idx") { + $MakeIndex_run_needed = + (system("cmp -s $TeX_root.idx $TeX_root.idx-prev") >> 8) ? 1 : 0; + if ($MakeIndex_run_needed && $Verbose) { + system("diff -c1 $TeX_root.idx-prev $TeX_root.idx"); + } + } + } + + $Says_labels_changed || $BibTeX_run_needed || $MakeIndex_run_needed; +} + +sub slurp_aux_file { + local($ext) = @_; + + # copy all citations from slurpfile into $(TMPDIR)/ltx-$ext-cite.$$ + + open(SLURPF,"< $TeX_root.$ext") + || &die_gracefully("$Pgm: Can't open $TeX_root.$ext for reading\n"); + open(CITEF,"> $(TMPDIR)/ltx-$ext-cite.$$") + || &die_gracefully("$Pgm: Can't open $(TMPDIR)/ltx-$ext-cite.$$ for writing\n"); + + while (<SLURPF>) { + print CITEF $_ if /\\citation/; + } + close(CITEF); + close(SLURPF); +} |