From 2a7e1667f70c5381d3b939324cc647e51134b15c Mon Sep 17 00:00:00 2001 From: nsfisis Date: Sun, 17 Aug 2025 13:18:15 +0900 Subject: refactor: direct array access with infile_*() helper functions --- common.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'common.c') diff --git a/common.c b/common.c index 921b89b..1b89f8c 100644 --- a/common.c +++ b/common.c @@ -10,3 +10,30 @@ void fatal_error(const char* msg, ...) { #define unreachable() fatal_error("%s:%d: unreachable", __FILE__, __LINE__) #define unimplemented() fatal_error("%s:%d: unimplemented", __FILE__, __LINE__) + +struct StrBuilder { + size_t len; + size_t capacity; + char* buf; +}; +typedef struct StrBuilder StrBuilder; + +void strbuilder_init(StrBuilder* b) { + b->len = 0; + b->capacity = 16; + b->buf = calloc(b->capacity, sizeof(char)); +} + +// `size` must include a trailing null byte. +void strbuilder_reserve(StrBuilder* b, size_t size) { + if (size <= b->capacity) + return; + b->capacity *= 2; + b->buf = realloc(b->buf, b->capacity * sizeof(char)); + memset(b->buf + b->len, 0, (b->capacity - b->len) * sizeof(char)); +} + +void strbuilder_append_char(StrBuilder* b, int c) { + strbuilder_reserve(b, b->len + 1 + 1); + b->buf[b->len++] = c; +} -- cgit v1.2.3-70-g09d2