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/**********************************************************************
* makebdb.c May 2002
* ChrisS chriss@pipex.net
*
* Create a bdb file from a : delimited flat file read from stdin
* Based (very heavily) on makegdbm.c by Horms
*
* perdition
* Mail retrieval proxy server
* Copyright (C) 1999-2005 Horms
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*
**********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <ctype.h>
#include <db.h>
#include "options.h"
#ifdef DMALLOC
#include <dmalloc.h>
#endif
#define MAX_LINE_LENGTH 4096
#define FIELD_DELIMITER ':'
void makebdb_new(const makebdb_options_t options);
void makebdb_undo(const makebdb_options_t options);
int main(int argc, char **argv){
makebdb_options_t options;
options=makebdb_options(argc, argv);
if(options.undo){
makebdb_undo(options);
}
else{
makebdb_new(options);
}
return(0);
}
/**********************************************************************
* makebdb_new
* Create a new bdb file from a flat file read from stdin
* pre: options: options structure specifying what to do
* post: bdb file created and populated
**********************************************************************/
void makebdb_new(const makebdb_options_t options){
DB *dbp;
DBT key;
DBT content;
int ret;
int i;
char line[MAX_LINE_LENGTH];
int status;
int blank;
int lineno;
if ((ret=db_create(&dbp, NULL, 0)) != 0) {
fprintf(stderr,"makebdb_new: db_create: %s\n",db_strerror(ret));
exit(-1);
}
if ((ret=dbp->open(
dbp,
#ifdef HAVE_BDB_OPEN_7
NULL,
#endif
options.mapname,
NULL,
DB_HASH,
DB_CREATE|DB_TRUNCATE,
0644
)) != 0) {
fprintf(stderr,"makebdb_new: DB->open: %s\n",db_strerror(ret));
exit(-1);
}
/*Warning: This loop contains some of the worst code ever written*/
memset(&key, 0, sizeof(key));
memset(&content, 0, sizeof(content));
status=0;
lineno=0;
while(fgets(line, MAX_LINE_LENGTH, stdin)!=NULL){
blank=1;
key.data=line;
key.size = MAX_LINE_LENGTH;
content.size = MAX_LINE_LENGTH;
for(i=0;i<MAX_LINE_LENGTH;i++){
if(blank && *(line+i)!=' ' && *(line+i)!='\t'&& *(line+i)!='\n'){
blank=0;
}
if(key.size == MAX_LINE_LENGTH && *(line+i)==FIELD_DELIMITER){
key.size=i;
content.data=line+i+1;
continue;
}
if(content.size == MAX_LINE_LENGTH && *(line+i)=='\n'){
content.size=i-key.size-1;
lineno++;
break;
}
}
fflush(NULL);
if(!blank && !status &&
(key.size == MAX_LINE_LENGTH || content.size == MAX_LINE_LENGTH)){
status=1;
}
if(status){
if(*(line+i)=='\n'){
fprintf(stderr, "makebdb: invalid input on line: %d \n", lineno);
status=0;
}
continue;
}
if(blank){
continue;
}
if ((ret = dbp->put(dbp, NULL, &key, &content, DB_NOOVERWRITE))!=0){
*((char *)key.data+key.size)='\0';
fprintf(stderr, "makebdb: %s (key: %s)\n",db_strerror(ret),
(char *)key.data);
}
}
dbp->close(dbp, 0);
}
/**********************************************************************
* makebdb_undo
* print out a : delimited flat file to stdout of a bdb file
* pre: options: options structure sepcifying what to do
* post: glat file output to stdout
**********************************************************************/
void makebdb_undo(makebdb_options_t options){
DB *dbp;
DBC *dbcp;
DBT key;
DBT content;
int ret;
if ((ret=db_create(&dbp, NULL, 0)) != 0) {
fprintf(stderr,"makebdb_undo: db_create: %s\n",db_strerror(ret));
exit(-1);
}
if ((ret=dbp->open(
dbp,
#ifdef HAVE_BDB_OPEN_7
NULL,
#endif
options.mapname,
NULL,
DB_HASH,
DB_RDONLY,
0644
)) != 0) {
fprintf(stderr,"makebdb_undo: DB->open: %s\n",db_strerror(ret));
exit(-1);
}
if ((ret = dbp->cursor(dbp, NULL, &dbcp, 0))!=0) {
fprintf(stderr,"makebdb_undo: DB->cursor: %s\n",db_strerror(ret));
exit(-1);
};
memset(&key, 0, sizeof(key));
memset(&content, 0, sizeof(content));
while((ret=dbcp->c_get(dbcp,&key,&content,DB_NEXT))==0)
{
char c;
fwrite((char *)key.data, key.size, 1, stdout);
c = ':';
fwrite(&c, 1, 1, stdout);
fwrite((char *)content.data, content.size, 1, stdout);
c = '\n';
fwrite(&c, 1, 1, stdout);
}
if(ret != DB_NOTFOUND){
fprintf(stderr,"makebdb_undo: DBcursor->get: %s\n",db_strerror(ret));
}
dbcp->c_close(dbcp);
dbp->close(dbp, 0);
}
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