From d94bb93f10365a39d90cc0d4d4b151fc797767df Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marc=20Andr=C3=A9=20Tanner?= Date: Sat, 30 Jan 2016 20:11:52 +0100 Subject: Implement blackhole register "_ --- register.c | 43 +++++++++++++++++++++++++++++++++---------- 1 file changed, 33 insertions(+), 10 deletions(-) (limited to 'register.c') diff --git a/register.c b/register.c index 30ad19c..30e4c58 100644 --- a/register.c +++ b/register.c @@ -11,22 +11,45 @@ void register_release(Register *reg) { } const char *register_get(Register *reg, size_t *len) { - *len = reg->buf.len; - return reg->buf.data; + switch (reg->type) { + case REGISTER_NORMAL: + *len = reg->buf.len; + return reg->buf.data; + case REGISTER_BLACKHOLE: + default: + *len = 0; + return NULL; + } } bool register_put(Register *reg, Text *txt, Filerange *range) { - size_t len = text_range_size(range); - if (!buffer_grow(®->buf, len)) + switch (reg->type) { + case REGISTER_NORMAL: + { + size_t len = text_range_size(range); + if (!buffer_grow(®->buf, len)) + return false; + reg->buf.len = text_bytes_get(txt, range->start, len, reg->buf.data); + return true; + } + case REGISTER_BLACKHOLE: + return true; + default: return false; - reg->buf.len = text_bytes_get(txt, range->start, len, reg->buf.data); - return true; + } } bool register_append(Register *reg, Text *txt, Filerange *range) { - size_t len = text_range_size(range); - if (!buffer_grow(®->buf, reg->buf.len + len)) + switch (reg->type) { + case REGISTER_NORMAL: + { + size_t len = text_range_size(range); + if (!buffer_grow(®->buf, reg->buf.len + len)) + return false; + reg->buf.len += text_bytes_get(txt, range->start, len, reg->buf.data + reg->buf.len); + return true; + } + default: return false; - reg->buf.len += text_bytes_get(txt, range->start, len, reg->buf.data + reg->buf.len); - return true; + } } -- cgit v1.2.3