55 lines
1.4 KiB
C++
55 lines
1.4 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_string_utf8.h"
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#include <pxr/base/tf/stringUtils.h>
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#if PXR_VERSION >= 2403
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# include <pxr/base/tf/unicodeUtils.h>
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#endif
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namespace blender::io::usd {
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std::string make_safe_name(const std::string &name, [[maybe_unused]] bool allow_unicode)
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{
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#if PXR_VERSION >= 2403
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if (!allow_unicode) {
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return pxr::TfMakeValidIdentifier(name);
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}
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if (name.empty()) {
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return "_";
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}
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std::string buf;
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buf.resize(name.size()); /* We won't be exceeding the size of the incoming string. */
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bool first = true;
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size_t offset = 0;
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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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/* Ensure the returned string is sized exactly to the number of required bytes. */
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buf.resize(offset);
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return buf;
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#else
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return pxr::TfMakeValidIdentifier(name);
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#endif
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}
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} // namespace blender::io::usd
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