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/*
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Crown Copyright (c) 1997
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This TenDRA(r) Computer Program is subject to Copyright
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owned by the United Kingdom Secretary of State for Defence
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acting through the Defence Evaluation and Research Agency
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(DERA). It is made available to Recipients with a
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royalty-free licence for its use, reproduction, transfer
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to other parties and amendment for any purpose not excluding
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product development provided that any such use et cetera
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shall be deemed to be acceptance of the following conditions:-
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(1) Its Recipients shall ensure that this Notice is
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reproduced upon any copies or amended versions of it;
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(2) Any amended version of it shall be clearly marked to
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show both the nature of and the organisation responsible
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for the relevant amendment or amendments;
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(3) Its onward transfer from a recipient to another
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party shall be deemed to be that party's acceptance of
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these conditions;
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(4) DERA gives no warranty or assurance as to its
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quality or suitability for any purpose and DERA accepts
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no liability whatsoever in relation to any use to which
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it may be put.
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*/
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#include "config.h"
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#include "calculus.h"
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#include "cmd_ops.h"
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#include "error.h"
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#include "common.h"
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#include "output.h"
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#include "template.h"
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#include "xalloc.h"
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/*
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GET A COMMAND FROM A STRING
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This routine returns the address of the first non-white space character
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from the string ps. It returns the null pointer if the end of the line
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is reached.
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*/
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static char *get_command
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PROTO_N ( ( ps ) )
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PROTO_T ( char **ps )
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{
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char *t = *ps ;
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char *s = t ;
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if ( s ) {
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char c ;
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while ( c = *s, ( c == ' ' || c == '\t' || c == '\r' ) ) {
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*s = 0 ;
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s++ ;
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}
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if ( c == '#' || c == '\n' || c == 0 ) {
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*s = 0 ;
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*ps = NULL ;
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return ( NULL ) ;
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}
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t = s ;
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while ( c = *s, !( c == ' ' || c == '\t' || c == '\r' ||
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c == '\n' || c == 0 ) ) {
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s++ ;
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}
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*ps = s ;
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}
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return ( t ) ;
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}
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/*
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READ A TEMPLATE FILE
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This routine reads a template file from the file f.
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*/
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static COMMAND read_template
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PROTO_N ( ( f, p ) )
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PROTO_T ( FILE *f X COMMAND p )
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{
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int go = 1 ;
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char buff [1000] ;
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int ln1 = crt_line_no ;
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LIST ( COMMAND ) q = NULL_list ( COMMAND ) ;
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do {
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COMMAND r = NULL_cmd ;
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int ln2 = crt_line_no ;
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char *s = fgets ( buff, 1000, f ) ;
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if ( s == NULL ) {
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/* End of file */
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if ( IS_cmd_cond ( p ) ) {
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error ( ERROR_SERIOUS, "End of '@if' expected" ) ;
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} else if ( IS_cmd_loop ( p ) ) {
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error ( ERROR_SERIOUS, "End of '@loop' expected" ) ;
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}
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break ;
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}
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s = xstrcpy ( s ) ;
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if ( s [0] == '@' ) {
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/* Complex command */
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char *s1, *s2, *s3 ;
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s++ ;
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s1 = get_command ( &s ) ;
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if ( s1 == NULL ) s1 = "<empty>" ;
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s2 = get_command ( &s ) ;
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s3 = get_command ( &s ) ;
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if ( streq ( s1, "if" ) ) {
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if ( s2 == NULL ) {
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error ( ERROR_SERIOUS, "Incomplete '@%s' command", s1 ) ;
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s2 = "true" ;
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}
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MAKE_cmd_cond ( ln2, s2, NULL_cmd, NULL_cmd, r ) ;
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} else if ( streq ( s1, "else" ) ) {
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if ( IS_cmd_cond ( p ) ) {
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COMMAND v = DEREF_cmd ( cmd_cond_true_code ( p ) ) ;
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if ( !IS_NULL_cmd ( v ) ) {
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error ( ERROR_SERIOUS, "Duplicate '@%s' command", s1 ) ;
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}
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q = REVERSE_list ( q ) ;
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MAKE_cmd_compound ( ln1, q, v ) ;
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COPY_cmd ( cmd_cond_true_code ( p ), v ) ;
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q = NULL_list ( COMMAND ) ;
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ln1 = ln2 ;
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} else {
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error ( ERROR_SERIOUS, "Misplaced '@%s' command", s1 ) ;
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}
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s3 = s2 ;
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} else if ( streq ( s1, "endif" ) ) {
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if ( IS_cmd_cond ( p ) ) {
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go = 0 ;
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} else {
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error ( ERROR_SERIOUS, "Misplaced '@%s' command", s1 ) ;
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}
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s3 = s2 ;
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} else if ( streq ( s1, "loop" ) ) {
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if ( s2 == NULL ) {
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error ( ERROR_SERIOUS, "Incomplete '@%s' command", s1 ) ;
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s2 = "false" ;
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}
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MAKE_cmd_loop ( ln2, s2, NULL_cmd, r ) ;
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} else if ( streq ( s1, "end" ) ) {
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if ( IS_cmd_loop ( p ) ) {
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go = 0 ;
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} else {
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error ( ERROR_SERIOUS, "Misplaced '@%s' command", s1 ) ;
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}
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s3 = s2 ;
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} else if ( streq ( s1, "comment" ) ) {
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s3 = NULL ;
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} else {
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error ( ERROR_SERIOUS, "Unknown command, '@%s'", s1 ) ;
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s3 = NULL ;
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}
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if ( s3 ) {
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error ( ERROR_SERIOUS, "End of '@%s' expected", s1 ) ;
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}
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crt_line_no = ln2 + 1 ;
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if ( !IS_NULL_cmd ( r ) ) {
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/* Read body of command */
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COMMAND u = read_template ( f, r ) ;
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if ( IS_cmd_cond ( r ) ) {
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COMMAND v = DEREF_cmd ( cmd_cond_true_code ( r ) ) ;
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if ( IS_NULL_cmd ( v ) ) {
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COPY_cmd ( cmd_cond_true_code ( r ), u ) ;
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} else {
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COPY_cmd ( cmd_cond_false_code ( r ), u ) ;
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}
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} else if ( IS_cmd_loop ( r ) ) {
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COPY_cmd ( cmd_loop_body ( r ), u ) ;
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}
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CONS_cmd ( r, q, q ) ;
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}
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} else {
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/* Simple command */
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MAKE_cmd_simple ( ln2, s, r ) ;
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CONS_cmd ( r, q, q ) ;
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crt_line_no = ln2 + 1 ;
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}
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} while ( go ) ;
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q = REVERSE_list ( q ) ;
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MAKE_cmd_compound ( ln1, q, p ) ;
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return ( p ) ;
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}
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/*
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TOKEN CONDITION
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This variable gives the value of the token condition.
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*/
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int token_cond = 0 ;
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/*
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EVALUATE A CONDITION
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This routine evaluates the condition s.
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*/
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static int eval_cond
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PROTO_N ( ( s ) )
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PROTO_T ( char *s )
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{
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if ( s [0] == '!' ) {
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/* Negate condition */
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return ( !eval_cond ( s + 1 ) ) ;
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}
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if ( streq ( s, "comp.complex" ) ) {
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/* Complex component type */
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if ( HAVE_COMPONENT ) {
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TYPE_P_P pt = cmp_type ( CRT_COMPONENT ) ;
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TYPE_P t = DEREF_ptr ( pt ) ;
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return ( is_complex_type ( t ) ) ;
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}
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return ( 0 ) ;
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}
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if ( streq ( s, "comp.default" ) ) {
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/* Component default value */
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if ( HAVE_COMPONENT ) {
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string_P pv = cmp_name ( CRT_COMPONENT ) ;
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string v = DEREF_string ( pv ) ;
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if ( v ) return ( 1 ) ;
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}
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return ( 0 ) ;
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}
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if ( streq ( s, "token" ) ) return ( token_cond ) ;
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if ( streq ( s, "true" ) ) return ( 1 ) ;
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if ( streq ( s, "false" ) ) return ( 0 ) ;
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error ( ERROR_SERIOUS, "Unknown condition, '%s'", s ) ;
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return ( 0 ) ;
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}
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/*
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WRITE A TEMPLATE FILE
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This routine writes the template file given by the commands cmd.
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*/
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static void write_template
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PROTO_N ( ( cmd ) )
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PROTO_T ( COMMAND cmd )
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{
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if ( !IS_NULL_cmd ( cmd ) ) {
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crt_line_no = DEREF_int ( cmd_line ( cmd ) ) ;
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switch ( TAG_cmd ( cmd ) ) {
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case cmd_simple_tag : {
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string s = DEREF_string ( cmd_simple_text ( cmd ) ) ;
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output ( s ) ;
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break ;
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}
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case cmd_compound_tag : {
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LIST ( COMMAND ) p ;
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p = DEREF_list ( cmd_compound_seq ( cmd ) ) ;
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while ( !IS_NULL_list ( p ) ) {
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COMMAND a = DEREF_cmd ( HEAD_list ( p ) ) ;
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write_template ( a ) ;
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p = TAIL_list ( p ) ;
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}
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break ;
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}
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case cmd_loop_tag : {
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string s = DEREF_string ( cmd_loop_control ( cmd ) ) ;
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COMMAND a = DEREF_cmd ( cmd_loop_body ( cmd ) ) ;
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if ( streq ( s, "enum" ) ) {
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LOOP_ENUM write_template ( a ) ;
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} else if ( streq ( s, "enum.const" ) ) {
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if ( HAVE_ENUM ) {
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LOOP_ENUM_CONST write_template ( a ) ;
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}
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} else if ( streq ( s, "identity" ) ) {
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LOOP_IDENTITY write_template ( a ) ;
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} else if ( streq ( s, "primitive" ) ) {
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LOOP_PRIMITIVE write_template ( a ) ;
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} else if ( streq ( s, "struct" ) ) {
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LOOP_STRUCTURE write_template ( a ) ;
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} else if ( streq ( s, "struct.comp" ) ) {
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if ( HAVE_STRUCTURE ) {
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LOOP_STRUCTURE_COMPONENT write_template ( a ) ;
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}
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} else if ( streq ( s, "union" ) ) {
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LOOP_UNION write_template ( a ) ;
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} else if ( streq ( s, "union.comp" ) ) {
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if ( HAVE_UNION ) {
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LOOP_UNION_COMPONENT write_template ( a ) ;
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}
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} else if ( streq ( s, "union.field" ) ) {
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295 |
if ( HAVE_UNION ) {
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LOOP_UNION_FIELD write_template ( a ) ;
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}
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} else if ( streq ( s, "union.field.comp" ) ) {
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299 |
if ( HAVE_UNION && HAVE_FIELD ) {
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LOOP_FIELD_COMPONENT write_template ( a ) ;
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}
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302 |
} else if ( streq ( s, "union.map" ) ) {
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303 |
if ( HAVE_UNION ) {
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LOOP_UNION_MAP write_template ( a ) ;
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}
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} else if ( streq ( s, "union.map.arg" ) ) {
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307 |
if ( HAVE_UNION && HAVE_MAP ) {
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LOOP_MAP_ARGUMENT write_template ( a ) ;
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}
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310 |
} else {
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311 |
error ( ERROR_SERIOUS, "Unknown control, '%s'", s ) ;
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312 |
}
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313 |
break ;
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314 |
}
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315 |
case cmd_cond_tag : {
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316 |
string s = DEREF_string ( cmd_cond_control ( cmd ) ) ;
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317 |
COMMAND a = DEREF_cmd ( cmd_cond_true_code ( cmd ) ) ;
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318 |
COMMAND b = DEREF_cmd ( cmd_cond_false_code ( cmd ) ) ;
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319 |
if ( eval_cond ( s ) ) {
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320 |
write_template ( a ) ;
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321 |
} else {
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322 |
write_template ( b ) ;
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323 |
}
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324 |
break ;
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325 |
}
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326 |
}
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327 |
}
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328 |
return ;
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329 |
}
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330 |
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331 |
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332 |
/*
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333 |
PROCESS A TEMPLATE FILE
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334 |
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335 |
This routine processes the template file in to the output file out.
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336 |
*/
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337 |
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338 |
void template_file
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339 |
PROTO_N ( ( in, out ) )
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340 |
PROTO_T ( char *in X char *out )
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341 |
{
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342 |
COMMAND cmd ;
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343 |
FILE *input_file ;
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344 |
crt_line_no = 1 ;
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345 |
crt_file_name = in ;
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346 |
input_file = fopen ( in, "r" ) ;
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347 |
if ( input_file == NULL ) {
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348 |
error ( ERROR_SERIOUS, "Can't open template file, '%s'", in ) ;
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349 |
return ;
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350 |
}
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351 |
MAKE_cmd_simple ( 1, "<dummy>", cmd ) ;
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352 |
cmd = read_template ( input_file, cmd ) ;
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353 |
fclose_v ( input_file ) ;
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354 |
if ( streq ( out, "." ) ) {
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355 |
output_file = stdout ;
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356 |
} else {
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|
357 |
output_file = fopen ( out, "w" ) ;
|
|
|
358 |
if ( output_file == NULL ) {
|
|
|
359 |
error ( ERROR_SERIOUS, "Can't open output file, '%s'", out ) ;
|
|
|
360 |
return ;
|
|
|
361 |
}
|
|
|
362 |
}
|
|
|
363 |
have_varargs = 0 ;
|
|
|
364 |
write_template ( cmd ) ;
|
|
|
365 |
have_varargs = 1 ;
|
|
|
366 |
flush_output () ;
|
|
|
367 |
if ( output_file != stdout ) fclose_v ( output_file ) ;
|
|
|
368 |
return ;
|
|
|
369 |
}
|