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/* dctrl-tools - Debian control file inspection tools
Copyright (C) 2003, 2004 Antti-Juhani Kaijanaho
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <gmp.h>
#include <string.h>
#include "msg.h"
#include "paragraph.h"
#include "strutil.h"
static
void parse_int(FSAF * fp, struct field_data * fd)
{
const size_t len = fd->end - fd->start;
struct fsaf_read_rv rd = fsaf_read(fp, fd->start, len);
assert(rd.len == len);
fd->int_valid = false;
char * s = strndup(rd.b, len);
if (s == 0) fatal_enomem(0);
int r = mpz_set_str(fd->parsed, s, 10);
free(s);
fd->int_valid = (r == 0);
if (!fd->int_valid) {
message(L_INFORMATIONAL, _("parse of a numeric field failed"),
0);
}
}
void para_init(para_t * para, FSAF * fp, fieldtrie_t * trie)
{
para->fp = fp;
para->trie = trie;
para->start = 0;
para->end = 0;
para->eof = false;
for (size_t i = 0; i < MAX_FIELDS; i++) {
mpz_init(para->fields[i].parsed);
}
para_parse_next(para);
}
void para_parse_next(para_t * para)
{
debug_message("para_parse_next", 0);
para->start = para->end;
for (size_t i = 0; i < fieldtrie_count(para->trie); i++) {
para->fields[i].start = 0;
para->fields[i].end = 0;
para->fields[i].int_valid = 0;
}
fsaf_invalidate(para->fp, para->start);
register enum { START, FIELD_NAME, BODY, BODY_NEWLINE,
BODY_SKIPBLANKS, END } state = START;
register size_t pos = para->start;
register FSAF * fp = para->fp;
size_t field_start = 0;
struct field_data * field_data = 0;
while (state != END) {
# ifndef TEST_NODEBUG
static char * const stnm[] = { "START", "FIELD_NAME",
"BODY", "BODY_NEWLINE",
"BODY_SKIPBLANKS", "END" };
if (do_msg(L_DEBUG)) fprintf(stderr, "State: %s\n", stnm[state]);
# endif
int c = fsaf_getc(fp, pos++);
switch (state) {
case START:
switch (c) {
case -1:
para->eof = true;
state = END;
break;
case '\n':
para->start++;
break;
default:
field_start = --pos;
state = FIELD_NAME;
}
break;
case FIELD_NAME:
switch (c) {
case -1:
message(L_FATAL, _("unexpected end of file"), 0);
fail();
case ':': {
size_t len = (pos-1) - field_start;
struct fsaf_read_rv r = fsaf_read(fp, field_start, len);
assert(r.len == len);
struct field_attr attr =
fieldtrie_lookup(para->trie, r.b, len);
if (!attr.valid) {
field_data = 0;
} else {
assert(attr.inx < MAX_FIELDS);
field_data = ¶->fields[attr.inx];
field_data->start = pos;
}
state = BODY;
}
break;
case '\n':
message(L_FATAL, _("unexpected end of line"), 0);
fail();
}
break;
case BODY:
switch (c) {
case -1:
message(L_FATAL, _("unexpected end of file"), 0);
fail();
case '\n':
if (field_data != 0) {
field_data->end = pos-1;
while (field_data->start < field_data->end
&& fsaf_getc(fp, field_data->start) == ' ') {
++field_data->start;
}
parse_int(fp, field_data);
}
state = BODY_NEWLINE;
break;
}
break;
case BODY_NEWLINE:
switch (c) {
case -1:
//para->eof = true;
/* pass through */
case '\n':
state = END;
break;
case ' ': case '\t':
state = BODY_SKIPBLANKS;
break;
default:
field_start = --pos;
state = FIELD_NAME;
}
break;
case BODY_SKIPBLANKS:
switch (c) {
case -1:
/* pass through */
case '\n':
state = END;
break;
case ' ': case '\t':
break;
default:
state = BODY;
}
break;
case END: assert(0);
}
}
para->end = pos-1;
}
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