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/*
puplug - portable micro plugin framework
Copyright (C) 2017 Tibor 'Igor2' Palinkas
libgpmi - General Package/Module Interface
Copyright (C) 2005-2007 Patric 'TrueLight' Stout & Tibor 'Igor2' Palinkas
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 31 Milk Street, # 960789 Boston, MA 02196 USA.
*/
#include <ctype.h>
#include <string.h>
/* caller must define these: */
static int pup_parse_dep(parse_dep_t *st, char *first, char *args);
static int pup_parse_conflict(parse_dep_t *st, char *first, char *args);
static int pup_parse_autoload(parse_dep_t *st, char *first, char *args);
static int pup_parse_default(parse_dep_t *st, char *first, char *args);
static int pup_parse_tag(parse_dep_t *st, char *tag, char *args);
static int pup_parse_syntax_error(parse_dep_t *st, const char *msg);
static void pup_parse_pup_init(parse_dep_t *st)
{
st->s = st->buff;
*st->s = 0;
st->lineno = 0;
}
static int pup_parse_pup(parse_dep_t *st, int c)
{
char *first, *args, *cmd;
int state;
switch(c) {
/* end of word */
case '\n':
case '\r':
st->lineno++;
case EOF:
case ';':
case '\0':
*st->s = '\0';
cmd = st->buff;
while(isspace(*cmd)) cmd++;
if ((*cmd != '\0') && (*cmd != '#')) {
first = strpbrk(cmd, " \t");
if (first != NULL) {
*first = '\0';
first++;
while(isspace(*first)) first++;
}
/* Split version number by replacing the first ',' with '\0' */
if (first != NULL) {
args = strchr(first, ',');
if (args != NULL) {
*args = 0;
args++;
}
}
else
args = NULL;
if (strcmp(cmd, "dep") == 0) state = pup_parse_dep(st, first, args);
else if (strcmp(cmd, "conflict") == 0) state = pup_parse_conflict(st, first, args);
else if (strcmp(cmd, "autoload") == 0) state = pup_parse_autoload(st, first, args);
else if (strcmp(cmd, "default") == 0) state = pup_parse_default(st, first, args);
else if (*cmd == '$') {
if (args != NULL)
args[-1] = ',';
state = pup_parse_tag(st, cmd+1, first);
}
else state = pup_parse_syntax_error(st, cmd);
if (state < 0)
return state;
}
st->s = st->buff;
*st->s = 0;
break;
/* copy next character */
default:
if ((st->s - st->buff) >= sizeof(st->buff)) {
char tmp[128];
sprintf(tmp, "line %d too long: %ld >= %ld", st->lineno, (long int) (st->s - st->buff), (long int) sizeof(st->buff));
pup_parse_syntax_error(st, tmp);
}
else {
*st->s = c;
st->s++;
}
}
return 0;
}
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