security/nss/cmd/modutil/installparse.l
author Axel Hecht <l10n@mozilla.com>
Tue, 31 Mar 2009 16:25:51 +0200
changeset 26764 45fc547f59ff9b23ae95bfa60ce367c511cdfbaa
parent 15273 437dcecc6377817753fd3bdce409c69f978ac2e4
child 115094 699db88b5ea01fd321fe8abfe5bb071e991b120d
permissions -rw-r--r--
bug 482776, JarMaker.py unittests don't cause "make check" to fail, r=ted

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the Netscape security libraries.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1994-2000
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 *
 * ***** END LICENSE BLOCK ***** */


/* lex file for analyzing PKCS #11 Module installation instructions */

/*----------------------------- Definitions ---------------------------*/
%{
#include <string.h>

#include "install-ds.h"		/* defines tokens and data structures */
#include "installparse.h"	/* produced by yacc -d */
#include <prprf.h>
static char *putSimpleString(char*);	/* return copy of string */
static char *putComplexString(char*);	/* strip out quotes, deal with */
											/* escaped characters */

void Pk11Install_yyerror(char *);

/* Overrides to use NSPR */
#define malloc PR_Malloc
#define realloc PR_Realloc
#define free PR_Free

int Pk11Install_yylinenum=1;
static char *err;

#define YY_NEVER_INTERACTIVE 1
#define yyunput Pkcs11Install_yyunput

/* This is the default YY_INPUT modified for NSPR */
#define YY_INPUT(buf,result,max_size) \
	if ( yy_current_buffer->yy_is_interactive ) { \
		char c; \
		int n; \
		for ( n = 0; n < max_size && \
		  PR_Read(Pk11Install_FD, &c, 1)==1 && c != '\n'; ++n ) { \
			buf[n] = c; \
		} \
        if ( c == '\n' ) { \
            buf[n++] = c; \
		} \
        result = n; \
	} else { \
		result = PR_Read(Pk11Install_FD, buf, max_size); \
	}

%}

/*** Regular expression definitions ***/
/* simple_string has no whitespace, quotes, or braces */
simple_string		[^ \t\r\n\""{""}"]+

/* complex_string is enclosed in quotes. Inside the quotes, quotes and
   backslashes must be backslash-escaped. No newlines or carriage returns
   are allowed inside the quotes. Otherwise, anything goes. */
complex_string		\"([^\"\\\r\n]|(\\\")|(\\\\))+\"

/* Standard whitespace */
whitespace			[ \t\r]+

other				.

/*---------------------------- Actions --------------------------------*/
%%

"{"					return OPENBRACE;
"}"					return CLOSEBRACE;
{simple_string}		{Pk11Install_yylval.string =
						putSimpleString(Pk11Install_yytext);
						return STRING;}
{complex_string}	{Pk11Install_yylval.string =
						putComplexString(Pk11Install_yytext);
						return STRING;}

"\n"				Pk11Install_yylinenum++;

{whitespace}		;

{other}				{err = PR_smprintf("Invalid lexeme: %s",Pk11Install_yytext);
						Pk11Install_yyerror(err);
						PR_smprintf_free(err);
						return 1;
					}

%%
/*------------------------ Program Section ----------------------------*/

PRFileDesc *Pk11Install_FD=NULL;

/*************************************************************************/
/* dummy function required by lex */
int Pk11Install_yywrap(void) { return 1;}

/*************************************************************************/
/* Return a copy of the given string */
static char*
putSimpleString(char *str)
{
	char *tmp = (char*) PR_Malloc(strlen(str)+1);
	strcpy(tmp, str);
	return tmp;
}

/*************************************************************************/
/* Strip out quotes, replace escaped characters with what they stand for.
   This function assumes that what is passed in is actually a complex
   string, so error checking is lax. */
static char*
putComplexString(char *str)
{
	int size, i,j;
	char *tmp;

	if(!str) {
		return NULL;
	}
	size = strlen(str);

	/* Allocate the new space.  This string will actually be too big, 
		since quotes and backslashes will be stripped out.  But that's ok. */
	tmp = (char*) PR_Malloc(size+1);

	/* Copy it over */
	for(i=0, j=0; i < size; i++) {
		if(str[i]=='\"') {
			continue;  /* skip un-escaped quotes */
		} else if(str[i]=='\\') {
			++i;       /* escaped character. skip the backslash */
		}
		tmp[j++] = str[i];
	}
	tmp[j] = '\0';

	return tmp;
}