mirror of
https://github.com/ArduPilot/ardupilot
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55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
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/*
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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expanding string for easy construction of text buffers
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*/
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#pragma once
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#include <AP_HAL/AP_HAL.h>
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class ExpandingString {
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public:
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const char *get_string(void) const {
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return buf;
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}
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uint32_t get_length(void) const {
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return used;
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}
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// print into the string
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void printf(const char *format, ...) FMT_PRINTF(2,3);
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// append data to the string
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void append(const char *s, uint32_t len);
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// destructor
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~ExpandingString();
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bool has_failed_allocation() const {
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return allocation_failed;
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}
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private:
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char *buf;
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uint32_t buflen;
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uint32_t used;
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bool allocation_failed;
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// try to expand the buffer
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bool expand(uint32_t min_needed) WARN_IF_UNUSED;
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};
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