Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/src/liblex/allprint.c

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
Download the Plan 9 distribution.


#include	"/sys/src/cmd/lex/ldefs.h"
#include	<stdio.h>

extern	FILE*	yyout;

int
printable(int c)
{
	return 040 < c && c < 0177;
}

void
allprint(int c)
{

	switch(c) {
	case '\n':
		fprintf(yyout,"\\n");
		break;
	case '\t':
		fprintf(yyout,"\\t");
		break;
	case '\b':
		fprintf(yyout,"\\b");
		break;
	case ' ':
		fprintf(yyout,"\\\bb");
		break;
	default:
		if(!printable(c))
			fprintf(yyout,"\\%-3o",c);
		else 
			c = putc(c,yyout);
			USED(c);
		break;
	}
	return;
}

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