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/*
* The new sysinstall program.
*
* This is probably the last attempt in the `sysinstall' line, the next
* generation being slated to essentially a complete rewrite.
*
* $Id: attr.c,v 1.2.2.4 1995/06/06 00:44:51 jkh Exp $
*
* Copyright (c) 1995
* Jordan Hubbard. All rights reserved.
* Copyright (c) 1995
* Gary J Palmer. 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,
* verbatim and that no modifications are made prior to this
* point in the file.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Jordan Hubbard
* for the FreeBSD Project.
* 4. The name of Jordan Hubbard or the FreeBSD project may not be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``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 JORDAN HUBBARD OR HIS PETS 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, LIFE 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.
*
*/
#include "sysinstall.h"
#include <ctype.h>
#include <sys/errno.h>
static int num_attribs;
int
attr_parse(Attribs **attr, char *file)
{
char hold_n[MAX_NAME+1];
char hold_v[MAX_VALUE+1];
int n, v, ch = 0;
enum { LOOK, COMMENT, NAME, VALUE, COMMIT } state;
FILE *fp;
static int lno;
num_attribs = n = v = lno = 0;
state = LOOK;
if ((fp = fopen(file, "r")) == NULL) {
msgConfirm("Cannot open the information file `%s': %s (%d)", file, strerror(errno), errno);
return 0;
}
while (state == COMMIT || (ch = fgetc(fp)) != EOF) {
/* Count lines */
if (ch == '\n')
++lno;
switch(state) {
case LOOK:
if (isspace(ch))
continue;
/* Allow shell or lisp style comments */
else if (ch == '#' || ch == ';') {
state = COMMENT;
continue;
}
else if (isalpha(ch)) {
hold_n[n++] = ch;
state = NAME;
}
else
msgFatal("Invalid character '%c' at line %d\n", ch, lno);
break;
case COMMENT:
if (ch == '\n')
state = LOOK;
break;
case NAME:
if (ch == '\n') {
hold_n[n] = '\0';
hold_v[v = 0] = '\0';
state = COMMIT;
}
else if (isspace(ch))
continue;
else if (ch == '=') {
hold_n[n] = '\0';
state = VALUE;
}
else
hold_n[n++] = ch;
break;
case VALUE:
if (v == 0 && isspace(ch))
continue;
else if (ch == '{') {
/* multiline value */
while ((ch = fgetc(fp)) != '}') {
if (ch == EOF)
msgFatal("Unexpected EOF on line %d", lno);
else {
if (v == MAX_VALUE)
msgFatal("Value length overflow at line %d", lno);
hold_v[v++] = ch;
}
}
hold_v[v] = '\0';
state = COMMIT;
}
else if (ch == '\n') {
hold_v[v] = '\0';
state = COMMIT;
}
else {
if (v == MAX_VALUE)
msgFatal("Value length overflow at line %d", lno);
else
hold_v[v++] = ch;
}
break;
case COMMIT:
(*attr)[num_attribs].name = strdup(hold_n);
(*attr)[num_attribs++].value = strdup(hold_v);
state = LOOK;
v = n = 0;
break;
default:
msgFatal("Unknown state at line %d??\n", lno);
}
}
fclose(fp);
return 1;
}
const char *
attr_match(Attribs *attr, char *name)
{
int n = 0;
if (isDebug())
msgDebug("Trying to match attribute `%s'\n", name);
while ((n < num_attribs) && (strcasecmp(attr[n].name, name) != 0)) {
if (isDebug())
msgDebug("Skipping attribute %u\n", n);
n++;
}
if (isDebug())
msgDebug("Stopped on attribute %u\n", n);
if (n < num_attribs) {
if (isDebug())
msgDebug("Returning `%s'\n", attr[n].value);
return((const char *) attr[n].value);
}
return NULL;
}
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