Rev 7 | Blame | Compare with Previous | Last modification | View Log | RSS feed
/*
* Copyright (c) 2002-2005 The TenDRA Project <http://www.tendra.org/>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of The TenDRA Project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific, prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
* IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id$
*/
/*
Crown Copyright (c) 1997
This TenDRA(r) Computer Program is subject to Copyright
owned by the United Kingdom Secretary of State for Defence
acting through the Defence Evaluation and Research Agency
(DERA). It is made available to Recipients with a
royalty-free licence for its use, reproduction, transfer
to other parties and amendment for any purpose not excluding
product development provided that any such use et cetera
shall be deemed to be acceptance of the following conditions:-
(1) Its Recipients shall ensure that this Notice is
reproduced upon any copies or amended versions of it;
(2) Any amended version of it shall be clearly marked to
show both the nature of and the organisation responsible
for the relevant amendment or amendments;
(3) Its onward transfer from a recipient to another
party shall be deemed to be that party's acceptance of
these conditions;
(4) DERA gives no warranty or assurance as to its
quality or suitability for any purpose and DERA accepts
no liability whatsoever in relation to any use to which
it may be put.
*/
#include "config.h"
#include "calculus.h"
#include "cmd_ops.h"
#include "error.h"
#include "common.h"
#include "output.h"
#include "template.h"
#include "xalloc.h"
/*
* GET A COMMAND FROM A STRING
*
* This routine returns the address of the first non-white space character
* from the string ps. It returns the null pointer if the end of the line
* is reached.
*/
static char *
get_command(char **ps)
{
char *t = *ps;
char *s = t;
if (s) {
char c;
while (c = *s,(c == ' ' || c == '\t' || c == '\r')) {
*s = 0;
s++;
}
if (c == '#' || c == '\n' || c == 0) {
*s = 0;
*ps = NULL;
return(NULL);
}
t = s;
while (c = *s, !(c == ' ' || c == '\t' || c == '\r' ||
c == '\n' || c == 0)) {
s++;
}
*ps = s;
}
return(t);
}
/*
* READ A TEMPLATE FILE
*
* This routine reads a template file from the file f.
*/
static COMMAND
read_template(FILE *f, COMMAND p)
{
int go = 1;
char buff[1000];
int ln1 = crt_line_no;
LIST(COMMAND)q = NULL_list(COMMAND);
do {
COMMAND r = NULL_cmd;
int ln2 = crt_line_no;
char *s = fgets(buff, 1000, f);
if (s == NULL) {
/* End of file */
if (IS_cmd_cond(p)) {
error(ERROR_SERIOUS, "End of '@if' expected");
} else if (IS_cmd_loop(p)) {
error(ERROR_SERIOUS, "End of '@loop' expected");
}
break;
}
s = xstrcpy(s);
if (s[0] == '@') {
/* Complex command */
char *s1, *s2, *s3;
s++;
s1 = get_command(&s);
if (s1 == NULL) {
s1 = "<empty>";
}
s2 = get_command(&s);
s3 = get_command(&s);
if (streq(s1, "if")) {
if (s2 == NULL) {
error(ERROR_SERIOUS, "Incomplete '@%s' command", s1);
s2 = "true";
}
MAKE_cmd_cond(ln2, s2, NULL_cmd, NULL_cmd, r);
} else if (streq(s1, "else")) {
if (IS_cmd_cond(p)) {
COMMAND v = DEREF_cmd(cmd_cond_true_code(p));
if (!IS_NULL_cmd(v)) {
error(ERROR_SERIOUS, "Duplicate '@%s' command", s1);
}
q = REVERSE_list(q);
MAKE_cmd_compound(ln1, q, v);
COPY_cmd(cmd_cond_true_code(p), v);
q = NULL_list(COMMAND);
ln1 = ln2;
} else {
error(ERROR_SERIOUS, "Misplaced '@%s' command", s1);
}
s3 = s2;
} else if (streq(s1, "endif")) {
if (IS_cmd_cond(p)) {
go = 0;
} else {
error(ERROR_SERIOUS, "Misplaced '@%s' command", s1);
}
s3 = s2;
} else if (streq(s1, "loop")) {
if (s2 == NULL) {
error(ERROR_SERIOUS, "Incomplete '@%s' command", s1);
s2 = "false";
}
MAKE_cmd_loop(ln2, s2, NULL_cmd, r);
} else if (streq(s1, "end")) {
if (IS_cmd_loop(p)) {
go = 0;
} else {
error(ERROR_SERIOUS, "Misplaced '@%s' command", s1);
}
s3 = s2;
} else if (streq(s1, "comment")) {
s3 = NULL;
} else {
error(ERROR_SERIOUS, "Unknown command, '@%s'", s1);
s3 = NULL;
}
if (s3) {
error(ERROR_SERIOUS, "End of '@%s' expected", s1);
}
crt_line_no = ln2 + 1;
if (!IS_NULL_cmd(r)) {
/* Read body of command */
COMMAND u = read_template(f, r);
if (IS_cmd_cond(r)) {
COMMAND v = DEREF_cmd(cmd_cond_true_code(r));
if (IS_NULL_cmd(v)) {
COPY_cmd(cmd_cond_true_code(r), u);
} else {
COPY_cmd(cmd_cond_false_code(r), u);
}
} else if (IS_cmd_loop(r)) {
COPY_cmd(cmd_loop_body(r), u);
}
CONS_cmd(r, q, q);
}
} else {
/* Simple command */
MAKE_cmd_simple(ln2, s, r);
CONS_cmd(r, q, q);
crt_line_no = ln2 + 1;
}
} while (go);
q = REVERSE_list(q);
MAKE_cmd_compound(ln1, q, p);
return(p);
}
/*
* TOKEN CONDITION
*
* This variable gives the value of the token condition.
*/
int token_cond = 0;
/*
* EVALUATE A CONDITION
*
* This routine evaluates the condition s.
*/
static int
eval_cond(char *s)
{
if (s[0] == '!') {
/* Negate condition */
return(!eval_cond(s + 1));
}
if (streq(s, "comp.complex")) {
/* Complex component type */
if (HAVE_COMPONENT) {
TYPE_P_P pt = cmp_type(CRT_COMPONENT);
TYPE_P t = DEREF_ptr(pt);
return(is_complex_type(t));
}
return(0);
}
if (streq(s, "comp.default")) {
/* Component default value */
if (HAVE_COMPONENT) {
string_P pv = cmp_name(CRT_COMPONENT);
string v = DEREF_string(pv);
if (v) return(1);
}
return(0);
}
if (streq(s, "token")) {
return(token_cond);
}
if (streq(s, "true")) {
return(1);
}
if (streq(s, "false")) {
return(0);
}
error(ERROR_SERIOUS, "Unknown condition, '%s'", s);
return(0);
}
/*
* WRITE A TEMPLATE FILE
*
* This routine writes the template file given by the commands cmd.
*/
static void
write_template(COMMAND cmd)
{
if (!IS_NULL_cmd(cmd)) {
crt_line_no = DEREF_int(cmd_line(cmd));
switch (TAG_cmd(cmd)) {
case cmd_simple_tag: {
string s = DEREF_string(cmd_simple_text(cmd));
output(s);
break;
}
case cmd_compound_tag: {
LIST(COMMAND)p;
p = DEREF_list(cmd_compound_seq(cmd));
while (!IS_NULL_list(p)) {
COMMAND a = DEREF_cmd(HEAD_list(p));
write_template(a);
p = TAIL_list(p);
}
break;
}
case cmd_loop_tag: {
string s = DEREF_string(cmd_loop_control(cmd));
COMMAND a = DEREF_cmd(cmd_loop_body(cmd));
if (streq(s, "enum")) {
LOOP_ENUM write_template(a);
} else if (streq(s, "enum.const")) {
if (HAVE_ENUM) {
LOOP_ENUM_CONST write_template(a);
}
} else if (streq(s, "identity")) {
LOOP_IDENTITY write_template(a);
} else if (streq(s, "primitive")) {
LOOP_PRIMITIVE write_template(a);
} else if (streq(s, "struct")) {
LOOP_STRUCTURE write_template(a);
} else if (streq(s, "struct.comp")) {
if (HAVE_STRUCTURE) {
LOOP_STRUCTURE_COMPONENT write_template(a);
}
} else if (streq(s, "union")) {
LOOP_UNION write_template(a);
} else if (streq(s, "union.comp")) {
if (HAVE_UNION) {
LOOP_UNION_COMPONENT write_template(a);
}
} else if (streq(s, "union.field")) {
if (HAVE_UNION) {
LOOP_UNION_FIELD write_template(a);
}
} else if (streq(s, "union.field.comp")) {
if (HAVE_UNION && HAVE_FIELD) {
LOOP_FIELD_COMPONENT write_template(a);
}
} else if (streq(s, "union.map")) {
if (HAVE_UNION) {
LOOP_UNION_MAP write_template(a);
}
} else if (streq(s, "union.map.arg")) {
if (HAVE_UNION && HAVE_MAP) {
LOOP_MAP_ARGUMENT write_template(a);
}
} else {
error(ERROR_SERIOUS, "Unknown control, '%s'", s);
}
break;
}
case cmd_cond_tag: {
string s = DEREF_string(cmd_cond_control(cmd));
COMMAND a = DEREF_cmd(cmd_cond_true_code(cmd));
COMMAND b = DEREF_cmd(cmd_cond_false_code(cmd));
if (eval_cond(s)) {
write_template(a);
} else {
write_template(b);
}
break;
}
}
}
return;
}
/*
* PROCESS A TEMPLATE FILE
*
* This routine processes the template file in to the output file out.
*/
void
template_file(char *in, char *out)
{
COMMAND cmd;
FILE *input_file;
crt_line_no = 1;
crt_file_name = in;
input_file = fopen(in, "r");
if (input_file == NULL) {
error(ERROR_SERIOUS, "Can't open template file, '%s'", in);
return;
}
MAKE_cmd_simple(1, "<dummy>", cmd);
cmd = read_template(input_file, cmd);
fclose_v(input_file);
if (streq(out, ".")) {
output_file = stdout;
} else {
output_file = fopen(out, "w");
if (output_file == NULL) {
error(ERROR_SERIOUS, "Can't open output file, '%s'", out);
return;
}
}
have_varargs = 0;
write_template(cmd);
have_varargs = 1;
flush_output();
if (output_file != stdout) {
fclose_v(output_file);
}
return;
}