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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include <iostream>
#include <fstream>
#include <memory>
#include <vespa/fsa/base64.h>
#include <vespa/fsa/fsa.h>
#include <vespa/fsa/automaton.h>
using namespace fsa;
enum FSA_Input_Format {
INPUT_UNDEF,
INPUT_TEXT,
INPUT_TEXT_EMPTY,
INPUT_TEXT_NUM,
INPUT_BINARY,
INPUT_BINARY_RAW };
void usage(const char *name, const char *errormsg = NULL)
{
if(errormsg!=NULL){
fprintf(stderr,"%s: %s\n",name,errormsg);
}
fprintf(stderr,"usage:\n");
fprintf(stderr," %s [OPTIONS] [input_file] output_file\n",name);
fprintf(stderr,"\n");
fprintf(stderr," Valid options are:\n");
fprintf(stderr," -h display this help\n");
fprintf(stderr," -b use binary input format with Base64 encoded info\n");
fprintf(stderr," -B use binary input format with raw\n");
fprintf(stderr," -e use text input format with no info (default)\n");
fprintf(stderr," -n use text input format with (unsigned) numerical info\n");
fprintf(stderr," -s bytes data size for numerical info: 1,2 or 4(default)\n");
fprintf(stderr," -z bytes data size for binary info (-B) (0 means NUL terminated)\n");
fprintf(stderr," -t use text input format\n");
fprintf(stderr," -p build automaton with perfect hash\n");
fprintf(stderr," -i ignore info string, regardless of input format\n");
fprintf(stderr," -S serial serial number\n");
fprintf(stderr," -v be verbose\n");
fprintf(stderr," -V display version number\n");
fprintf(stderr,"\n");
fprintf(stderr," If input_file is not specified, standard input is used.\n");
}
void version()
{
std::cout << "makefsa "
<< FSA::VER/1000000 << "." << (FSA::VER/1000)%1000 << "." << FSA::VER%1000;
if(FSA::VER != FSA::libVER()){
std::cout << " (library "
<< FSA::libVER()/1000000 << "." << (FSA::libVER()/1000)%1000 << "." << FSA::libVER()%1000
<< ")";
}
std::cout << std::endl;
}
int main(int argc, char** argv)
{
FSA_Input_Format format = INPUT_UNDEF;
unsigned int num_size = 4;
unsigned int info_size_binary = 0;
bool build_phash = false;
const char *input_file;
const char *output_file;
uint32_t serial = 0;
bool ignore_info = false;
bool verbose = false;
unsigned int lines=0,count = 0;
int opt;
extern char *optarg;
extern int optind;
while((opt=getopt(argc,argv,"ebBhns:z:tpS:ivV")) != -1){
switch(opt){
case 'b':
format = INPUT_BINARY;
break;
case 'B':
format = INPUT_BINARY_RAW;
break;
case 'h':
usage(argv[0]);
return 0;
case 'V':
version();
return 0;
case 't':
format = INPUT_TEXT;
break;
case 'n':
format = INPUT_TEXT_NUM;
break;
case 's':
num_size = strtoul(optarg,NULL,0);
if(num_size!=1 && num_size!=2 && num_size!=4){
usage(argv[0],"invalid numerical info size (-s)");
return 1;
}
break;
case 'z':
info_size_binary = strtoul(optarg,NULL,0);
break;
case 'S':
serial = strtoul(optarg,NULL,0);
break;
case 'e':
format = INPUT_TEXT_EMPTY;
break;
case 'p':
build_phash = true;
break;
case 'i':
ignore_info = true;
break;
case 'v':
verbose = true;
break;
case '?':
usage(argv[0],"unrecognized option");
return 1;
}
}
if(format==INPUT_UNDEF) // use default format (warning?)
format=INPUT_TEXT_EMPTY;
if(optind+2==argc){
input_file = argv[optind];
output_file = argv[optind+1];
}
else if(optind+1==argc){
input_file = NULL;
output_file = argv[optind];
}
else{
usage(argv[0],"required parameter(s) missing");
return 1;
}
Automaton automaton;
std::string input,last_input,meta,temp;
union{
uint8_t u1;
uint16_t u2;
uint32_t u4;
} num_meta;
std::ifstream infile;
std::istream *in;
auto binary_info = std::make_unique<char[]>(info_size_binary);
size_t split;
bool empty_meta_str = false;
if(verbose) version();
if(verbose) std::cerr << "Initializing automaton ...";
automaton.init();
if(verbose) std::cerr << " done." << std::endl;
if(input_file!=NULL){
infile.open(input_file);
if (infile.fail()) {
std::cerr << "Error: Could not open file \"" << input_file << "\"\n";
return(1);
}
in=&infile;
}
else{
in=&std::cin;
}
if(verbose) std::cerr << "Inserting lines ...";
while(!in->eof()){
switch(format){
case INPUT_BINARY:
getline(*in,input,'\0');
getline(*in,temp,'\0');
Base64::decode(temp,meta);
break;
case INPUT_BINARY_RAW:
getline(*in,input,'\0');
if (info_size_binary) {
in->read(binary_info.get(), info_size_binary);
meta.assign(binary_info.get(), info_size_binary);
}
else
getline(*in,meta,'\0');
break;
case INPUT_TEXT:
getline(*in,temp,'\n');
split = temp.find_first_of('\t');
input = temp.substr(0, split);
if (split == std::string::npos) {
empty_meta_str = true;
break;
}
meta = temp.substr(split + 1);
meta+='\0';
break;
case INPUT_TEXT_NUM:
getline(*in,temp,'\n');
split = temp.find_first_of('\t');
input = temp.substr(0, split);
if (split == std::string::npos) {
empty_meta_str = true;
break;
}
temp = temp.substr(split + 1);
switch(num_size){
case 1:
num_meta.u1=strtoul(temp.c_str(),NULL,0);
meta.assign((const char*)&num_meta,1);
break;
case 2:
num_meta.u2=strtoul(temp.c_str(),NULL,0);
meta.assign((const char*)&num_meta,2);
break;
case 4:
default:
num_meta.u4=strtoul(temp.c_str(),NULL,0);
meta.assign((const char*)&num_meta,4);
break;
}
break;
case INPUT_TEXT_EMPTY:
getline(*in,input,'\n');
break;
case INPUT_UNDEF:
assert(0);
break;
}
++lines;
if(input.length()>0){
if(last_input>input){
std::cerr << "warning: ignoring unsorted line " << lines << ", \"" << input << "\"\n";
}
else if(last_input==input){
std::cerr << "warning: ignoring duplicate line " << lines << ", \"" << input << "\"\n";
}
else if(empty_meta_str) {
std::cerr << "warning: ignoring line " << lines << ", \"" << input << "\" with missing meta info\n";
}
else{
if(format==INPUT_TEXT_EMPTY || ignore_info){
automaton.insertSortedString(input);
}
else{
automaton.insertSortedString(input,meta);
}
if(verbose){
++count;
if(count%1000==0)
std::cerr << "\rInserting lines ... (inserted " << count << " lines)";
}
}
last_input=input;
}
empty_meta_str = false;
}
if(verbose) std::cerr << "\rInserting lines ... (inserted " << count << "/" << (lines-1) << " lines) ... done.\n";
if(input_file!=NULL){
infile.close();
}
if(verbose) std::cerr << "Finalizing ...";
automaton.finalize();
if(verbose) std::cerr << " done." << std::endl;
if(build_phash){
if(verbose) std::cerr << "Adding perfect hash ...";
automaton.addPerfectHash();
if(verbose) std::cerr << " done." << std::endl;
}
if(verbose) std::cerr << "Writing fsa file ...";
if (!automaton.write(output_file,serial)) {
std::cerr << "Failed to write fsa file '" << std::string(output_file) << "'. Please check write permissions" << std::endl;
return 1;
}
if(verbose) std::cerr << " done." << std::endl;
return 0;
}
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