GitHub/gf-core
1
0
Fork 1
mirror of https://github.com/GrammaticalFramework/gf-core.git synced 2026-05-05 01:02:51 -06:00
Code Issues Packages Projects Releases Wiki Activity

more compact implementation for GuStringBuf

Browse Source
This commit is contained in:
kr.angelov
2014-12-24 14:20:30 +00:00
parent 537bc249f9
commit 8fd24c3839
3 changed files with 46 additions and 71 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
src/runtime/c/gu/string.c
View File

@@ -1,7 +1,7 @@
#include <gu/out.h>
#include <gu/seq.h>
#include <gu/map.h>
#include <gu/string.h>
#include <gu/seq.h>
#include <gu/utf8.h>
#include <gu/assert.h>
#include <stdlib.h>
@@ -10,16 +10,55 @@
#endif
struct GuStringBuf {
GuOutStream stream;
GuBuf* buf;
GuOut* out;
};
static size_t
gu_string_buf_output(GuOutStream* stream, const uint8_t* src, size_t sz,
GuExn* err)
{
(void) err;
GuStringBuf* sbuf = gu_container(stream, GuStringBuf, stream);
gu_buf_push_n(sbuf->buf, src, sz);
return sz;
}
static uint8_t*
gu_string_buf_begin(GuOutStream* stream, size_t req, size_t* sz_out, GuExn* err)
{
(void) req;
(void) err;
GuStringBuf* sbuf = gu_container(stream, GuStringBuf, stream);
size_t len = gu_buf_length(sbuf->buf);
gu_buf_require(sbuf->buf, len + req);
size_t avail = sbuf->buf->avail_len;
gu_assert(len < avail);
*sz_out = (avail - len);
return (uint8_t*) gu_buf_index(sbuf->buf, char, len);
}
static void
gu_string_buf_end(GuOutStream* stream, size_t sz, GuExn* err)
{
(void) err;
GuStringBuf* sbuf = gu_container(stream, GuStringBuf, stream);
size_t len = gu_buf_length(sbuf->buf);
gu_require(sz < len - sbuf->buf->avail_len);
sbuf->buf->seq->len = len + sz;
}
GuStringBuf*
gu_string_buf(GuPool* pool)
{
GuStringBuf* sbuf = gu_new(GuStringBuf, pool);
sbuf->stream.output = gu_string_buf_output;
sbuf->stream.begin_buf = gu_string_buf_begin;
sbuf->stream.end_buf = gu_string_buf_end;
sbuf->stream.flush = NULL;
sbuf->buf = gu_new_buf(char, pool);
sbuf->out = gu_buf_out(sbuf->buf, pool);
sbuf->out = gu_new_out(&sbuf->stream, pool);
return sbuf;
}