273 lines
9.0 KiB
C++
273 lines
9.0 KiB
C++
/*
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Open Asset Import Library (assimp)
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----------------------------------------------------------------------
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Copyright (c) 2006-2021, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the
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following conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------------
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*/
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/** @file ParsingUtils.h
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* @brief Defines helper functions for text parsing
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*/
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#pragma once
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#ifndef AI_PARSING_UTILS_H_INC
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#define AI_PARSING_UTILS_H_INC
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#ifdef __GNUC__
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#pragma GCC system_header
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#endif
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#include <assimp/StringComparison.h>
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#include <assimp/StringUtils.h>
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#include <assimp/defs.h>
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#include <vector>
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#include <algorithm>
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namespace Assimp {
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// NOTE: the functions below are mostly intended as replacement for
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// std::upper, std::lower, std::isupper, std::islower, std::isspace.
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// we don't bother of locales. We don't want them. We want reliable
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// (i.e. identical) results across all locales.
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// The functions below accept any character type, but know only
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// about ASCII. However, UTF-32 is the only safe ASCII superset to
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// use since it doesn't have multi-byte sequences.
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static const unsigned int BufferSize = 4096;
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool IsUpper(char_t in) {
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return (in >= (char_t)'A' && in <= (char_t)'Z');
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool IsLower(char_t in) {
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return (in >= (char_t)'a' && in <= (char_t)'z');
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool IsSpace(char_t in) {
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return (in == (char_t)' ' || in == (char_t)'\t');
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool IsLineEnd(char_t in) {
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return (in == (char_t)'\r' || in == (char_t)'\n' || in == (char_t)'\0' || in == (char_t)'\f');
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool IsSpaceOrNewLine(char_t in) {
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return IsSpace<char_t>(in) || IsLineEnd<char_t>(in);
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool SkipSpaces(const char_t *in, const char_t **out) {
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while (*in == (char_t)' ' || *in == (char_t)'\t') {
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++in;
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}
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*out = in;
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return !IsLineEnd<char_t>(*in);
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool SkipSpaces(const char_t **inout) {
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return SkipSpaces<char_t>(*inout, inout);
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool SkipLine(const char_t *in, const char_t **out) {
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while (*in != (char_t)'\r' && *in != (char_t)'\n' && *in != (char_t)'\0') {
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++in;
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}
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// files are opened in binary mode. Ergo there are both NL and CR
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while (*in == (char_t)'\r' || *in == (char_t)'\n') {
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++in;
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}
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*out = in;
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return *in != (char_t)'\0';
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool SkipLine(const char_t **inout) {
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return SkipLine<char_t>(*inout, inout);
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool SkipSpacesAndLineEnd(const char_t *in, const char_t **out) {
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while (*in == (char_t)' ' || *in == (char_t)'\t' || *in == (char_t)'\r' || *in == (char_t)'\n') {
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++in;
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}
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*out = in;
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return *in != '\0';
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool SkipSpacesAndLineEnd(const char_t **inout) {
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return SkipSpacesAndLineEnd<char_t>(*inout, inout);
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool GetNextLine(const char_t *&buffer, char_t out[BufferSize]) {
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if ((char_t)'\0' == *buffer) {
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return false;
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}
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char *_out = out;
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char *const end = _out + BufferSize;
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while (!IsLineEnd(*buffer) && _out < end) {
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*_out++ = *buffer++;
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}
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*_out = (char_t)'\0';
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while (IsLineEnd(*buffer) && '\0' != *buffer) {
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++buffer;
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}
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return true;
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool IsNumeric(char_t in) {
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return (in >= '0' && in <= '9') || '-' == in || '+' == in;
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}
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// ---------------------------------------------------------------------------------
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template <class char_t>
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AI_FORCE_INLINE bool TokenMatch(char_t *&in, const char *token, unsigned int len) {
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if (!::strncmp(token, in, len) && IsSpaceOrNewLine(in[len])) {
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if (in[len] != '\0') {
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in += len + 1;
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} else {
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// If EOF after the token make sure we don't go past end of buffer
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in += len;
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}
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return true;
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}
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return false;
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}
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// ---------------------------------------------------------------------------------
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/** @brief Case-ignoring version of TokenMatch
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* @param in Input
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* @param token Token to check for
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* @param len Number of characters to check
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*/
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AI_FORCE_INLINE bool TokenMatchI(const char *&in, const char *token, unsigned int len) {
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if (!ASSIMP_strincmp(token, in, len) && IsSpaceOrNewLine(in[len])) {
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in += len + 1;
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return true;
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}
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return false;
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}
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// ---------------------------------------------------------------------------------
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AI_FORCE_INLINE void SkipToken(const char *&in) {
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SkipSpaces(&in);
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while (!IsSpaceOrNewLine(*in)) {
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++in;
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}
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}
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// ---------------------------------------------------------------------------------
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AI_FORCE_INLINE std::string GetNextToken(const char *&in) {
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SkipSpacesAndLineEnd(&in);
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const char *cur = in;
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while (!IsSpaceOrNewLine(*in)) {
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++in;
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}
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return std::string(cur, (size_t)(in - cur));
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}
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// ---------------------------------------------------------------------------------
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/** @brief Will perform a simple tokenize.
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* @param str String to tokenize.
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* @param tokens Array with tokens, will be empty if no token was found.
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* @param delimiters Delimiter for tokenize.
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* @return Number of found token.
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*/
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template <class string_type>
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AI_FORCE_INLINE unsigned int tokenize(const string_type &str, std::vector<string_type> &tokens,
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const string_type &delimiters) {
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// Skip delimiters at beginning.
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typename string_type::size_type lastPos = str.find_first_not_of(delimiters, 0);
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// Find first "non-delimiter".
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typename string_type::size_type pos = str.find_first_of(delimiters, lastPos);
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while (string_type::npos != pos || string_type::npos != lastPos) {
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// Found a token, add it to the vector.
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string_type tmp = str.substr(lastPos, pos - lastPos);
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if (!tmp.empty() && ' ' != tmp[0])
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tokens.push_back(tmp);
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// Skip delimiters. Note the "not_of"
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lastPos = str.find_first_not_of(delimiters, pos);
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// Find next "non-delimiter"
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pos = str.find_first_of(delimiters, lastPos);
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}
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return static_cast<unsigned int>(tokens.size());
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}
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inline std::string ai_stdStrToLower(const std::string &str) {
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std::string out(str);
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for (size_t i = 0; i < str.size(); ++i) {
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out[i] = (char) tolower((unsigned char)out[i]);
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}
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return out;
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}
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} // namespace Assimp
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#endif // ! AI_PARSING_UTILS_H_INC
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