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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef NETDATA_LOG2JOURNAL_TXT_H
#define NETDATA_LOG2JOURNAL_TXT_H
#include "log2journal.h"
// ----------------------------------------------------------------------------
// A dynamically sized, reusable text buffer,
// allowing us to be fast (no allocations during iterations) while having the
// smallest possible allocations.
typedef struct txt_l2j {
char *txt;
uint32_t size;
uint32_t len;
} TXT_L2J;
static inline void txt_l2j_cleanup(TXT_L2J *t) {
if(!t)
return;
if(t->txt)
freez(t->txt);
t->txt = NULL;
t->size = 0;
t->len = 0;
}
#define TXT_L2J_ALLOC_ALIGN 1024
static inline size_t txt_l2j_compute_new_size(size_t old_size, size_t required_size) {
size_t size = (required_size % TXT_L2J_ALLOC_ALIGN == 0) ? required_size : required_size + TXT_L2J_ALLOC_ALIGN;
size = (size / TXT_L2J_ALLOC_ALIGN) * TXT_L2J_ALLOC_ALIGN;
if(size < old_size * 2)
size = old_size * 2;
return size;
}
static inline void txt_l2j_resize(TXT_L2J *dst, size_t required_size, bool keep) {
if(required_size <= dst->size)
return;
size_t new_size = txt_l2j_compute_new_size(dst->size, required_size);
if(keep && dst->txt)
dst->txt = reallocz(dst->txt, new_size);
else {
txt_l2j_cleanup(dst);
dst->txt = mallocz(new_size);
dst->len = 0;
}
dst->size = new_size;
}
static inline void txt_l2j_set(TXT_L2J *dst, const char *s, int32_t len) {
if(!s || !*s || len == 0) {
s = "";
len = 0;
}
if(len == -1)
len = (int32_t)strlen(s);
txt_l2j_resize(dst, len + 1, false);
memcpy(dst->txt, s, len);
dst->txt[len] = '\0';
dst->len = len;
}
static inline void txt_l2j_append(TXT_L2J *dst, const char *s, int32_t len) {
if(!dst->txt || !dst->len)
txt_l2j_set(dst, s, len);
else {
if(len == -1)
len = (int32_t)strlen(s);
txt_l2j_resize(dst, dst->len + len + 1, true);
memcpy(&dst->txt[dst->len], s, len);
dst->len += len;
dst->txt[dst->len] = '\0';
}
}
#endif //NETDATA_LOG2JOURNAL_TXT_H
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