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77b70fa35d
clover needs to walk valid specifiers in C++, vtn needs to find string specifiers in C, let's do both. This writes the format walker in C++, and wraps it with C. Acked-by: Jason Ekstrand <jason@jlekstrand.net> Reviewed-by: Francisco Jerez <currojerez@riseup.net> Reviewed-by: Jesse Natalie <jenatali@microsoft.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8254>
53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
//
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// Copyright 2020 Serge Martin
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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// Extract from Serge's printf clover code by airlied.
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#include "u_printf.h"
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size_t util_printf_next_spec_pos(const std::string &s, size_t pos)
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{
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size_t next_tok, spec_pos;
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do {
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pos = s.find_first_of('%', pos);
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if (pos == std::string::npos)
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return -1;
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if (s[pos + 1] == '%') {
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pos += 2;
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continue;
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}
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next_tok = s.find_first_of('%', pos + 1);
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spec_pos = s.find_first_of("cdieEfFgGaAosuxXp", pos + 1);
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if (spec_pos != std::string::npos)
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if (spec_pos < next_tok)
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return spec_pos;
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pos++;
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} while (1);
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}
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size_t util_printf_next_spec_pos(const char *str, size_t pos)
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{
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return util_printf_next_spec_pos(std::string(str), pos);
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}
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