mirror of
https://github.com/freebsd/freebsd-src.git
synced 2026-11-07 12:48:33 -10:00
Pierre Pronchery
6294b6ab21
Obtained from https://github.com/pkgconf/pkgconf/archive/refs/tags/pkgconf-2.5.1.tar.gz SHA1: c5d6a0e62f293b2c9078c815b2343b0f208c9879 - SHA256: 79721badcad1987dead9c3609eb4877ab9b58821c06bdacb824f2c8897c11f2a - SHA512: 53244f372ea21125a1d97c5b89a84299740b55a66165782e807ed23adab3a07408a1547f1f40156e3060359660d07f49846c8b4893beef10ac9440ab7e8611cc -
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*
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* buffer.c
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* dynamically-managed buffers
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*
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* Copyright (c) 2024 pkgconf authors (see AUTHORS).
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* This software is provided 'as is' and without any warranty, express or
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* implied. In no event shall the authors be liable for any damages arising
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* from the use of this software.
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*/
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#include <libpkgconf/stdinc.h>
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#include <libpkgconf/libpkgconf.h>
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/*
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* !doc
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*
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* libpkgconf `buffer` module
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* ==========================
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*
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* The libpkgconf `buffer` module contains the functions related to managing
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* dynamically-allocated buffers.
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*/
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static inline size_t
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target_allocation_size(size_t target_size)
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{
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return 4096 + (4096 * (target_size / 4096));
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}
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void
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pkgconf_buffer_append(pkgconf_buffer_t *buffer, const char *text)
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{
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size_t needed = strlen(text) + 1;
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size_t newsize = pkgconf_buffer_len(buffer) + needed;
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char *newbase = realloc(buffer->base, target_allocation_size(newsize));
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/* XXX: silently failing here is antisocial */
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if (newbase == NULL)
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return;
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char *newend = newbase + pkgconf_buffer_len(buffer);
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pkgconf_strlcpy(newend, text, needed);
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buffer->base = newbase;
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buffer->end = newend + needed;
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}
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void
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pkgconf_buffer_push_byte(pkgconf_buffer_t *buffer, char byte)
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{
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size_t newsize = pkgconf_buffer_len(buffer) + 1;
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char *newbase = realloc(buffer->base, target_allocation_size(newsize));
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/* XXX: silently failing here remains antisocial */
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if (newbase == NULL)
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return;
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char *newend = newbase + newsize;
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*(newend - 1) = byte;
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*newend = '\0';
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buffer->base = newbase;
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buffer->end = newend;
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}
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void
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pkgconf_buffer_trim_byte(pkgconf_buffer_t *buffer)
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{
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size_t newsize = pkgconf_buffer_len(buffer) - 1;
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char *newbase = realloc(buffer->base, target_allocation_size(newsize));
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buffer->base = newbase;
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buffer->end = newbase + newsize;
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*(buffer->end) = '\0';
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}
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void
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pkgconf_buffer_finalize(pkgconf_buffer_t *buffer)
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{
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free(buffer->base);
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}
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