d6cdaff0c0
These were primarily put in place during the library update period of 4.2 to ease the in-between time when not all platforms had updated libraries. Also, now that we've begun depending on later version of USD and MaterialX, there's little reason to pretend that using versions prior to 24.03 is still supported. Pull Request: https://projects.blender.org/blender/blender/pulls/135202
60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
/* SPDX-FileCopyrightText: 2024 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "usd_utils.hh"
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#include "BLI_array.hh"
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#include "BLI_string_ref.hh"
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#include "BLI_string_utf8.h"
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#include <pxr/base/tf/stringUtils.h>
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#include <pxr/base/tf/unicodeUtils.h>
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namespace blender::io::usd {
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std::string make_safe_name(const StringRef name, bool allow_unicode)
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{
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if (name.is_empty()) {
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return "_";
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}
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/* Create temporary buffer with exact amount of space required. */
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const bool has_leading_digit = std::isdigit(name[0]);
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Array<char, 64> storage(name.size() + (has_leading_digit ? 1 : 0));
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MutableSpan<char> buf(storage);
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/* Insert a leading '_' to account for names starting with digits. */
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size_t offset = 0;
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bool first = true;
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if (has_leading_digit) {
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buf[0] = '_';
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offset = 1;
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first = false;
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}
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if (!allow_unicode) {
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buf.take_back(name.size()).copy_from(name);
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offset += name.size();
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return pxr::TfMakeValidIdentifier({buf.data(), offset});
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}
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for (auto cp : pxr::TfUtf8CodePointView{name}) {
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constexpr pxr::TfUtf8CodePoint cp_underscore = pxr::TfUtf8CodePointFromAscii('_');
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const bool cp_allowed = first ? (cp == cp_underscore || pxr::TfIsUtf8CodePointXidStart(cp)) :
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pxr::TfIsUtf8CodePointXidContinue(cp);
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if (!cp_allowed) {
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offset += BLI_str_utf8_from_unicode(uint32_t('_'), buf.data() + offset, buf.size() - offset);
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}
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else {
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offset += BLI_str_utf8_from_unicode(cp.AsUInt32(), buf.data() + offset, buf.size() - offset);
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}
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first = false;
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}
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return {buf.data(), offset};
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}
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} // namespace blender::io::usd
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