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#include <tb/sb.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
void sb_init(struct sb *ctx) {
ctx->string = malloc(512);
ctx->length = 0;
ctx->capacity = 512;
}
void sb_free(struct sb *ctx) {
ctx->length = 0;
ctx->capacity = 0;
free(ctx->string);
ctx->string = NULL;
}
void sb_reset(struct sb *ctx) {
ctx->length = 0;
}
int sb_isempty(const struct sb *ctx) {
return (0 == ctx->length);
}
void sb_append_char(struct sb *ctx, char c) {
if (1 > ctx->capacity - ctx->length) {
ctx->capacity += 32;
ctx->string = realloc(ctx->string, ctx->capacity);
}
memcpy(ctx->string + ctx->length, &c, 1);
ctx->length++;
}
int sb_delete_right(struct sb *ctx, int n) {
n = min(n, ctx->length);
ctx->length -= n;
return n;
}
void sb_append(struct sb *ctx, const char *s) {
size_t l = strlen(s);
if (l > ctx->capacity - ctx->length) {
ctx->capacity += l;
ctx->string = realloc(ctx->string, ctx->capacity);
}
memcpy(ctx->string + ctx->length, s, l);
ctx->length += l;
}
void sb_prepend_sv(struct sb *ctx, struct sv sv) {
if (sv.length > ctx->capacity - ctx->length) {
ctx->capacity += sv.length;
ctx->string = realloc(ctx->string, ctx->capacity);
}
memmove(ctx->string + sv.length, ctx->string, ctx->length);
memcpy(ctx->string, sv.s, sv.length);
ctx->length += sv.length;
}
void sb_append_sv(struct sb *ctx, struct sv sv) {
if (sv.length > ctx->capacity - ctx->length) {
ctx->capacity += sv.length;
ctx->string = realloc(ctx->string, ctx->capacity);
}
memcpy(ctx->string + ctx->length, sv.s, sv.length);
ctx->length += sv.length;
}
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