% Change file for BibTeX in C, originally by Howard Trickey, for
% Berkeley Unix.
%
% History:
% 05/28/84 Initial implementation, version 0.41 of BibTeX
% 07/01/84 Version 0.41a of BibTeX.
% 12/17/84 Version 0.97c of BibTeX.
% 02/12/85 Version 0.98c of BibTeX.
% 02/25/85 Newer version 0.98c of BibTeX.
% 03/25/85 Version 0.98f of BibTeX
% 05/23/85 Version 0.98i of BibTeX
% 02/11/88 Version 0.99b of BibTeX
% 04/04/88 Version 0.99c; converted for use with web2c (ETM).
% 11/30/89 Use FILENAMESIZE instead of 1024 (KB).
% 03/09/90 `int' is a bad variable name.
% (more recent changes in ../ChangeLog.W2C)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [1] banner
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@d banner=='This is BibTeX, Version 0.99c' {printed when the program starts}
@y
@d banner=='This is BibTeX, Version 0.99c' {more is printed later}
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [2] `term_in' and `term_out' are standard input and output. But
% there is a complication: BibTeX passes `term_out' to some routines as
% a var parameter. web2c turns a var parameter f into &f at the calling
% side -- and stdout is sometimes implemented as `&_iob[1]' or some
% such. An address of an address is invalid.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@d term_out == tty
@d term_in == tty
@y
@d term_out == standard_output
@d term_in == standard_input
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [4] Turn debug..gubed et al. into #ifdef's.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@d debug == @{ { remove the `|@{|' when debugging }
@d gubed == @t@>@} { remove the `|@}|' when debugging }
@f debug == begin
@f gubed == end
@#
@d stat == @{ { remove the `|@{|' when keeping statistics }
@d tats == @t@>@} { remove the `|@}|' when keeping statistics }
@f stat == begin
@f tats == end
@#
@d trace == @{ { remove the `|@{|' when in |trace| mode }
@d ecart == @t@>@} { remove the `|@}|' when in |trace| mode }
@f trace == begin
@f ecart == end
@y
@d debug == ifdef('DEBUG')
@d gubed == endif('DEBUG')
@f debug == begin
@f gubed == end
@#
@d stat == ifdef('STAT')
@d tats == endif('STAT')
@f stat==begin
@f tats==end
@#
@d trace == ifdef@&('TRACE')
@d ecart == endif@&('TRACE')
@f trace == begin
@f ecart == end
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [10] Don't print the banner unless verbose.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
print_ln(banner);@/
@y
if verbose then begin
print (banner);
print_ln (version_string);
end;
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [10] Possibly exit with bad status. It doesn't seem worth it to move
% the definitions of the |history| values to above this module; hence
% the 1.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
exit_program:
end.
@y
exit_program:
if (history > 1) then uexit (history);
end.
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [11] Remove compiler directives.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@{@&$C-,A+,D-@} {no range check, catch arithmetic overflow, no debug overhead}
@!debug @{@&$C+,D+@}@+ gubed {but turn everything on when debugging}
@y
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [13] Remove nonlocal goto.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
goto exit_program;
@y
uexit (1);
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [14] Increase some constants.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@!buf_size=1000; {maximum number of characters in an input line (or string)}
@y
@!buf_size=3000; {maximum number of characters in an input line (or string)}
@z
@x
@!max_bib_files=20; {maximum number of \.{.bib} files allowed}
@y
@!max_bib_files=1000; {maximum number of \.{.bib} files allowed}
@z
@x
@!pool_size=65000; {maximum number of characters in strings}
@y
@!pool_size=512000; {maximum number of characters in strings}
@z
@x
@!max_strings=4000; {maximum number of strings, including pre-defined;
must be |<=hash_size|}
@y
@!max_strings=20000; {maximum number of strings, including pre-defined;
must be |<=hash_size|}
@z
@x
@!max_cites=750; {maximum number of distinct cite keys; must be
|<=max_strings|}
@y
@!max_cites=3000; {maximum number of distinct cite keys; must be
|<=max_strings|}
@z
@x
@!min_crossrefs=2; {minimum number of cross-refs required for automatic
|cite_list| inclusion}
@y
{|min_crossrefs| can be set at runtime now.}
@z
@x
@!wiz_fn_space=3000; {maximum amount of |wiz_defined|-function space}
@y
@!wiz_fn_space=10000; {maximum amount of |wiz_defined|-function space}
@z
@x
@!single_fn_space=100; {maximum amount for a single |wiz_defined|-function}
@y
@!single_fn_space=200; {maximum amount for a single |wiz_defined|-function}
@z
@x
@!max_ent_ints=3000; {maximum number of |int_entry_var|s
(entries $\times$ |int_entry_var|s)}
@y
@!max_ent_ints=25000; {maximum number of |int_entry_var|s
(entries $\times$ |int_entry_var|s)}
@z
@x
@!max_ent_strs=3000; {maximum number of |str_entry_var|s
(entries $\times$ |str_entry_var|s)}
@y
@!max_ent_strs=10000; {maximum number of |str_entry_var|s
(entries $\times$ |str_entry_var|s)}
@z
@x
@!max_fields=17250; {maximum number of fields (entries $\times$ fields,
about |23*max_cites| for consistency)}
@y
@!max_fields=69000; {maximum number of fields (entries $\times$ fields,
about |23*max_cites| for consistency)}
@z
@x
@d hash_size=5000 {must be |>= max_strings| and |>= hash_prime|}
@y
@d hash_size=21000 {must be |>= max_strings| and |>= hash_prime|}
@z
@x
@d hash_prime=4253 {a prime number about 85\% of |hash_size| and |>= 128|
and |< @t$2^{14}-2^6$@>|}
@y
@d hash_prime=16319 {a prime number about 85\% of |hash_size| and |>= 128|
and |< @t$2^{14}-2^6$@>|}
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [15] Use the system constant.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@d file_name_size=40 {file names shouldn't be longer than this}
@y
@d file_name_size == PATH_MAX
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [22, 23, 27, 28] Allow any character as input.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x [22]
@!ASCII_code=0..127; {seven-bit numbers}
@y
@!ASCII_code=0..255; {eight-bit numbers}
@z
@x [23]
@d text_char == char {the data type of characters in text files}
@d first_text_char=0 {ordinal number of the smallest element of |text_char|}
@d last_text_char=127 {ordinal number of the largest element of |text_char|}
@<Local variables for initialization@>=
i:0..last_text_char; {this is the first one declared}
@y
@d text_char == ASCII_code {the data type of characters in text files}
@d first_text_char=0 {ordinal number of the smallest element of |text_char|}
@d last_text_char=255 {ordinal number of the largest element of |text_char|}
@<Local variables for initialization@>=
i:integer;
@z
@x [27]
for i:=1 to @'37 do xchr[i]:=' ';
xchr[tab]:=chr(tab);
@y
for i:=0 to @'37 do xchr[i]:=chr(i);
for i:=@'177 to @'377 do xchr[i]:=chr(i);
@z
@x [28]
for i:=first_text_char to last_text_char do xord[chr(i)]:=invalid_code;
for i:=1 to @'176 do xord[xchr[i]]:=i;
@y
for i:=first_text_char to last_text_char do xord[xchr[i]]:=i;
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [32] Make RET a `white_space' character, so we won't choke on DOS
% files, which end in a CR/LF pair.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
lex_class[tab] := white_space;
@y
lex_class[tab] := white_space;
lex_class[13] := white_space;
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [36] Define `alpha_file' in C.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@!alpha_file=packed file of text_char; {files that contain textual data}
@y
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [37] Can't do arithmetic with |file_name_size| any longer, sigh.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@!name_ptr:0..file_name_size+1; {index variable into |name_of_file|}
@y
@!name_ptr:integer; {index variable into |name_of_file|}
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [38] File opening.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
The \ph\ compiler with which the present version of \TeX\ was prepared has
extended the rules of \PASCAL\ in a very convenient way. To open file~|f|,
we can write
$$\vbox{\halign{#\hfil\qquad&#\hfil\cr
|reset(f,@t\\{name}@>,'/O')|&for input;\cr
|rewrite(f,@t\\{name}@>,'/O')|&for output.\cr}}$$
The `\\{name}' parameter, which is of type `\ignorespaces|packed
array[@t\<\\{any}>@>] of text_char|', stands for the name of
the external file that is being opened for input or output.
Blank spaces that might appear in \\{name} are ignored.
The `\.{/O}' parameter tells the operating system not to issue its own
error messages if something goes wrong. If a file of the specified name
cannot be found, or if such a file cannot be opened for some other reason
(e.g., someone may already be trying to write the same file), we will have
|@!erstat(f)<>0| after an unsuccessful |reset| or |rewrite|. This allows
\TeX\ to undertake appropriate corrective action.
\TeX's file-opening procedures return |false| if no file identified by
|name_of_file| could be opened.
@d reset_OK(#)==erstat(#)=0
@d rewrite_OK(#)==erstat(#)=0
@<Procedures and functions for file-system interacting@>=
function erstat(var f:file):integer; extern; {in the runtime library}
@#@t\2@>
function a_open_in(var f:alpha_file):boolean; {open a text file for input}
begin reset(f,name_of_file,'/O'); a_open_in:=reset_OK(f);
end;
@#
function a_open_out(var f:alpha_file):boolean; {open a text file for output}
begin rewrite(f,name_of_file,'/O'); a_open_out:=rewrite_OK(f);
end;
@y
@ File opening will be done in C.
@d no_file_path = -1
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [39] Do file closing in C.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@<Procedures and functions for file-system interacting@>=
procedure a_close(var f:alpha_file); {close a text file}
begin close(f);
end;
@y
File closing will be done in C, too.
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [47] web2c doesn't understand f^.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
buffer[last]:=xord[f^];
get(f); incr(last);
end;
get(f);
@y
buffer[last] := xord[getc (f)];
incr (last);
end;
vgetc (f); {skip the eol}
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [77] The predefined string array starts at zero instead of one.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
for i:=1 to len do
buffer[i] := xord[pds[i]];
@y
for i:=1 to len do
buffer[i] := xord[pds[i-1]];
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [97] Can't do this tangle-time arithmetic.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@!aux_name_length : 0..file_name_size+1; {\.{.aux} name sans extension}
@y
@!aux_name_length : integer;
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [100] Reading the aux file name and command-line processing.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
This procedure consists of a loop that reads and processes a (nonnull)
\.{.aux} file name. It's this module and the next two that must be
changed on those systems using command-line arguments. Note: The
|term_out| and |term_in| files are system dependent.
@<Procedures and functions for the reading and processing of input files@>=
procedure get_the_top_level_aux_file_name;
label aux_found,@!aux_not_found;
var @<Variables for possible command-line processing@>@/
begin
check_cmnd_line := false; {many systems will change this}
loop
begin
if (check_cmnd_line) then
@<Process a possible command line@>
else
begin
write (term_out,'Please type input file name (no extension)--');
if (eoln(term_in)) then {so the first |read| works}
read_ln (term_in);
aux_name_length := 0;
while (not eoln(term_in)) do
begin
if (aux_name_length = file_name_size) then
begin
while (not eoln(term_in)) do {discard the rest of the line}
get(term_in);
sam_you_made_the_file_name_too_long;
end;
incr(aux_name_length);
name_of_file[aux_name_length] := term_in^;
get(term_in);
end;
end;
@<Handle this \.{.aux} name@>;
aux_not_found:
check_cmnd_line := false;
end;
aux_found: {now we're ready to read the \.{.aux} file}
end;
@y
@<Procedures and functions for the reading and processing of input files@>=
procedure get_the_top_level_aux_file_name;
label aux_found,@!aux_not_found;
var @<Variables for possible command-line processing@>@/
begin
loop
begin
{initialize the path variables}
set_paths (BIB_INPUT_PATH_BIT + BST_INPUT_PATH_BIT);
if (argc > 1) then
@<Process a possible command line@>
else begin
write (term_out,'Please type input file name (no extension)--');
aux_name_length := 0;
while (not eoln(term_in)) do begin
if (aux_name_length = file_name_size) then begin
readln(term_in);
sam_you_made_the_file_name_too_long;
end;
name_of_file[aux_name_length+1] := getc(term_in);
incr(aux_name_length);
end;
if (eof(term_in)) then begin
writeln(term_out);
writeln(term_out,
'Unexpected end of file on terminal---giving up!');
uexit(1);
end;
readln(term_in);
end;
@<Handle this \.{.aux} name@>;
aux_not_found:
argc := 0;
end;
aux_found: {now we're ready to read the \.{.aux} file}
end;
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [101] Don't need this variable; we use argc to check if we have a
% command line.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@<Variables for possible command-line processing@>=
@!check_cmnd_line : boolean; {|true| if we're to check the command line}
@y
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [102] Get the aux file name from the command line.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@<Process a possible command line@>=
begin
do_nothing; {the ``default system'' doesn't use the command line}
end
@y
@<Process a possible command line@>=
begin
if argc > n_options + arg_options + 3
then begin
print ('Usage: bibtex ');
print ('[-verbose] ');
print ('[-min-crossrefs=<number>] ');
print_ln ('[<aux file>].');
@.Usage: ...@>
uexit (1);
end;
@<Initialize the option variables@>;
@<Parse arguments@>;
argv (optind, name_of_file);
aux_name_length := 1;
while name_of_file[aux_name_length] <> ' '
do incr (aux_name_length);
decr (aux_name_length);
end
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [106] Don't use a path to find the aux file.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
if (not a_open_in(cur_aux_file)) then
sam_you_made_the_file_name_wrong;
@y
if (not a_open_in(cur_aux_file,no_file_path)) then
sam_you_made_the_file_name_wrong;
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [110] Be silent unless verbose.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
print ('The top-level auxiliary file: ');
print_aux_name;
@y
if verbose then begin
print ('The top-level auxiliary file: ');
print_aux_name;
end;
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [123] Use BIBINPUTS to search for the .bib file.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
if (not a_open_in(cur_bib_file)) then
begin
add_area (s_bib_area);
if (not a_open_in(cur_bib_file)) then
open_bibdata_aux_err ('I couldn''t open database file ');
end;
@y
if (not a_open_in(cur_bib_file,BIB_INPUT_PATH)) then
open_bibdata_aux_err ('I couldn''t open database file ');
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [127] Use BSTINPUTS/TEXINPUTS to search for .bst files.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
add_extension (s_bst_extension);
if (not a_open_in(bst_file)) then
begin
add_area (s_bst_area);
if (not a_open_in(bst_file)) then
begin
print ('I couldn''t open style file ');
print_bst_name;@/
bst_str := 0; {mark as unused again}
aux_err_return;
end;
end;
@y
add_extension (s_bst_extension);
if (not a_open_in(bst_file,BST_INPUT_PATH)) then
begin
print ('I couldn''t open style file ');
print_bst_name;@/
bst_str := 0; {mark as unused again}
aux_err_return;
end;
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [127] Be silent unless verbose.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
print ('The style file: ');
print_bst_name;
@y
if verbose then begin
print ('The style file: ');
print_bst_name;
end;
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [141] Don't use a path to search for subsidiary aux files, either.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
if (not a_open_in(cur_aux_file)) then
@y
if (not a_open_in(cur_aux_file, no_file_path)) then
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [151] This goto gets turned into a setjmp/longjmp by ./convert --
% unfortunately, it is a nonlocal goto. ekrell@ulysses@att.com
% implemented the conversion.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
buf_ptr2 := last; {to get the first input line}
loop
begin
if (not eat_bst_white_space) then {the end of the \.{.bst} file}
goto bst_done;
get_bst_command_and_process;
end;
bst_done: a_close (bst_file);
@y
buf_ptr2 := last; {to get the first input line}
hack1;
begin
if (not eat_bst_white_space) then {the end of the \.{.bst} file}
hack2;
get_bst_command_and_process;
end;
bst_done: a_close (bst_file);
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [198] A variable named `int' is no good in C.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@<Procedures and functions for handling numbers, characters, and strings@>=
@y
@d int == the_int
@<Procedures and functions for handling numbers, characters, and strings@>=
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [223] Be silent unless verbose.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
print ('Database file #',bib_ptr+1:0,': ');
print_bib_name;@/
@y
if verbose then begin
print ('Database file #',bib_ptr+1:0,': ');
print_bib_name;
end;
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [388] bibtex.web has mutually exclusive tests here; Oren said he
% doesn't want to fix it until 1.0, since it's obviously of no practical
% import (or someone would have found it before GCC 2 did). Changing
% the second `and' to an `or' makes all but the last of multiple authors
% be omitted in the bbl file, so I simply removed the statement.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
while ((ex_buf_xptr < ex_buf_ptr) and
(lex_class[ex_buf[ex_buf_ptr]] = white_space) and
(lex_class[ex_buf[ex_buf_ptr]] = sep_char)) do
incr(ex_buf_xptr); {this removes leading stuff}
@y
@z
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [467] System-dependent changes: option handling.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@* System-dependent changes.
@^system dependencies@>
This section should be replaced, if necessary, by changes to the program
that are necessary to make \BibTeX\ work at a particular installation.
It is usually best to design your change file so that all changes to
previous sections preserve the section numbering; then everybody's version
will be consistent with the printed program. More extensive changes,
which introduce new sections, can be inserted here; then only the index
itself will get a new section number.
@y
@* System-dependent changes. We want to parse a Unix-style command line.
@^system dependencies@>
This macro tests if its argument is the current option, as represented
by the index variable |option_index|.
@d argument_is (#) == (strcmp (long_options[option_index].name, #) = 0)
@<Parse arguments@> =
begin
@<Define the option table@>;
repeat
getopt_return_val := getopt_long_only (argc, gargv, '', long_options,
address_of_int (option_index));
if getopt_return_val <> -1
then begin
if getopt_return_val = "?"
then uexit (1); {|getopt| has already given an error message.}
if argument_is ('min-crossrefs')
then begin
min_crossrefs := atoi (optarg);
end
else
{It was just a flag; |getopt| has already done the assignment.}
do_nothing;
end;
until getopt_return_val = -1;
{Now |optind| is the index of first non-option on the command line.}
end
@ The array of information we pass in. The type |getopt_struct| is
defined in C, to avoid type clashes. We also need to know the return
value from getopt, and the index of the current option.
@<Variables for possible command-line...@> =
@!long_options: array[0..n_options] of getopt_struct;
@!getopt_return_val: integer;
@!option_index: c_int_type;
@!current_option: 0..n_options;
@ Here is the first of the options we allow.
@.-verbose@>
@<Define the option...@> =
current_option := 0;
long_options[0].name := 'verbose';
long_options[0].has_arg := 0;
long_options[0].flag := address_of_int (verbose);
long_options[0].val := 1;
incr (current_option);
@ The global variable |verbose| determines whether or not we print
progress information.
@<Glob...@> =
@!verbose: c_int_type;
@ It starts off |false|.
@<Initialize the option...@> =
verbose := false;
@ Here is an option to change the minimum number of cross-refs required
for automatic |cite_list| inclusion.
@.-min-crossrefs@>
@<Define the option...@> =
long_options[current_option].name := 'min-crossrefs';
long_options[current_option].has_arg := 1;
long_options[current_option].flag := 0;
long_options[current_option].val := 0;
incr (current_option);
@
@<Glob...@> =
@!min_crossrefs: integer;
@ Set |min_crossrefs| to two by default, so we match the
documentation (\.{btxdoc.tex}).
@<Initialize the option...@> =
min_crossrefs := 2;
@ An element with all zeros always ends the list.
@<Define the option...@> =
long_options[current_option].name := 0;
long_options[current_option].has_arg := 0;
long_options[current_option].flag := 0;
long_options[current_option].val := 0;
@ Pascal compilers won't count the number of elements in an array
constant for us. This doesn't include the zero-element at the end,
because this array starts at index zero.
@<Constants...@> =
@!n_options = 2;
@!arg_options = 1;
@z