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emit.c revision 1.23 
      1 /*	$NetBSD: emit.c,v 1.23 2023/08/12 17:13:27 rillig Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994, 1995 Jochen Pohl
      5  * All Rights Reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by Jochen Pohl for
     18  *	The NetBSD Project.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #if HAVE_NBTOOL_CONFIG_H
     35 #include "nbtool_config.h"
     36 #endif
     37 
     38 #include <sys/cdefs.h>
     39 #if defined(__RCSID)
     40 __RCSID("$NetBSD: emit.c,v 1.23 2023/08/12 17:13:27 rillig Exp $");
     41 #endif
     42 
     43 #include <stdio.h>
     44 #include <string.h>
     45 
     46 #include "lint.h"
     47 
     48 static const char *output_name;
     49 static FILE *output_file;
     50 static bool in_line;
     51 
     52 void
     53 outopen(const char *name)
     54 {
     55 
     56 	output_name = name;
     57 	if ((output_file = fopen(name, "w")) == NULL)
     58 		err(1, "cannot open '%s'", name);
     59 }
     60 
     61 void
     62 outclose(void)
     63 {
     64 
     65 	outclr();
     66 	if (fclose(output_file) == EOF)
     67 		err(1, "cannot close '%s'", output_name);
     68 }
     69 
     70 void
     71 outclr(void)
     72 {
     73 
     74 	if (in_line)
     75 		outchar('\n');
     76 }
     77 
     78 void
     79 outchar(char c)
     80 {
     81 
     82 	fputc(c, output_file);
     83 	in_line = c != '\n';
     84 }
     85 
     86 /*
     87  * write a string to the output file
     88  * the string must not contain any characters which should be quoted
     89  */
     90 void
     91 outstrg(const char *s)
     92 {
     93 
     94 	while (*s != '\0')
     95 		outchar(*s++);
     96 }
     97 
     98 /* write an integer value to the output file */
     99 void
    100 outint(int i)
    101 {
    102 	char buf[1 + 3 * sizeof(int)];
    103 
    104 	snprintf(buf, sizeof(buf), "%d", i);
    105 	outstrg(buf);
    106 }
    107 
    108 /* write a name to the output file, preceded by its length */
    109 void
    110 outname(const char *name)
    111 {
    112 
    113 	outint((int)strlen(name));
    114 	outstrg(name);
    115 }
    116 
    117 /* write the name of the .c source */
    118 void
    119 outsrc(const char *name)
    120 {
    121 
    122 	outclr();
    123 	outchar('S');
    124 	outstrg(name);
    125 }
    126