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23e5f06594
Design compile time api hs_compile_lit() and hs_compile_lit_multi() to handle pure literal pattern sets. Corresponding option --literal-on is added for hyperscan testing suites. Extended parameters and part of flags are not supported for this api.
145 lines
4.2 KiB
C++
145 lines
4.2 KiB
C++
/*
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* Copyright (c) 2015-2019, Intel Corporation
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef STRING_UTIL_H
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#define STRING_UTIL_H
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#include "ue2common.h"
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#include <iomanip>
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#include <string>
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#include <sstream>
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#include <vector>
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#include <cstring>
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#include <iostream>
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//
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// Utility functions
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//
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// read a string in and convert it to another type, anything supported
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// by stringstream
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template<typename T>
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inline bool fromString(const std::string &s, T& val)
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{
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std::istringstream i(s);
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char c;
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if (!(i >> val) || i.get(c)) {
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return false;
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}
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return true;
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}
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// read in a comma-separated set of values: very simple impl, not for
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// external consumption
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template<typename T>
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inline bool strToList(const std::string &s, std::vector<T>& out)
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{
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std::istringstream i(s);
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char c;
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do {
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T val;
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if (!(i >> val)) {
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break;
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}
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out.push_back(val);
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} while (i.get(c) && c == ',');
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return !out.empty();
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}
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// return a nicely escaped version of a string: this should probably become
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// an IO manipulator or something
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UNUSED static
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const std::string printable(const std::string &in) {
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std::ostringstream oss;
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for (size_t i = 0; i < in.size(); ++i) {
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unsigned char c = in[i];
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if (c == '\"') {
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oss << "\\\"";
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} else if (c == '\n') {
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oss << "\\n";
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} else if (c == '\t') {
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oss << "\\t";
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} else if (c == '\r') {
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oss << "\\r";
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} else if (0x20 <= c && c <= 0x7e && c != '\\') {
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oss << c;
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} else {
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oss << "\\x"
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<< std::hex << std::setw(2) << std::setfill('0')
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<< (unsigned)(in[i] & 0xff)
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<< std::dec;
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}
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}
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return oss.str();
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}
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template<typename it_t>
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void prettyPrintRange(std::ostream &out, it_t begin, it_t end) {
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bool in_range = false;
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it_t it = begin;
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it_t itp = it;
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for (; it != end; itp = it++) {
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if (it != begin && *it == *itp + 1) {
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in_range = true;
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continue;
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} else if (it != begin) {
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if (in_range) {
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out << "-" << *itp;
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}
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out << ", ";
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in_range = false;
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}
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out << *it;
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}
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if (in_range) {
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out << "-" << *itp;
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}
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}
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// Transfer given string into a hex-escaped pattern.
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static really_inline
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char *makeHex(const unsigned char *pat, unsigned patlen) {
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size_t hexlen = patlen * 4;
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char *hexbuf = (char *)malloc(hexlen + 1);
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unsigned i;
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char *buf;
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for (i = 0, buf = hexbuf; i < patlen; i++, buf += 4) {
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snprintf(buf, 5, "\\x%02x", (unsigned char)pat[i]);
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}
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hexbuf[hexlen] = '\0';
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return hexbuf;
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}
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#endif // STRING_UTIL_H
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