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Use the BinarySink system for conf serialisation.

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Now instead of iterating through conf twice in separate functions,
once to count up the size of the serialised data and once to write it
out, I just go through once and dump it all in a strbuf.

(Of course, I could still do a two-pass count-then-allocate approach
easily enough in this system; nothing would stop me writing a
BinarySink implementation that didn't actually store any data and just
counted its size, and then I could choose at each call site whether I
preferred to do it that way.)
This commit is contained in:
Simon Tatham
2018-05-24 10:48:20 +01:00
parent 81a04c4fe6
commit a990738aca
7 changed files with 54 additions and 119 deletions
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9
windows/window.c
View File

@ -2107,10 +2107,13 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
* config structure.
*/
SECURITY_ATTRIBUTES sa;
strbuf *serbuf;
void *p;
int size;
size = conf_serialised_size(conf);
serbuf = strbuf_new();
conf_serialise(BinarySink_UPCAST(serbuf), conf);
size = serbuf->len;
sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = NULL;
@ -2122,10 +2125,12 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
if (filemap && filemap != INVALID_HANDLE_VALUE) {
p = MapViewOfFile(filemap, FILE_MAP_WRITE, 0, 0, size);
if (p) {
conf_serialise(conf, p);
memcpy(p, serbuf->s, size);
UnmapViewOfFile(p);
}
}
strbuf_free(serbuf);
inherit_handles = TRUE;
cl = dupprintf("putty %s&%p:%u", argprefix,
filemap, (unsigned)size);

24
windows/winmisc.c
View File

@ -50,14 +50,9 @@ void filename_free(Filename *fn)
sfree(fn);
}
int filename_serialise(const Filename *f, void *vdata)
void filename_serialise(BinarySink *bs, const Filename *f)
{
char *data = (char *)vdata;
int len = strlen(f->path) + 1; /* include trailing NUL */
if (data) {
strcpy(data, f->path);
}
return len;
put_asciz(bs, f->path);
}
Filename *filename_deserialise(void *vdata, int maxsize, int *used)
{
@ -559,17 +554,12 @@ void fontspec_free(FontSpec *f)
sfree(f->name);
sfree(f);
}
int fontspec_serialise(FontSpec *f, void *vdata)
void fontspec_serialise(BinarySink *bs, FontSpec *f)
{
char *data = (char *)vdata;
int len = strlen(f->name) + 1; /* include trailing NUL */
if (data) {
strcpy(data, f->name);
PUT_32BIT_MSB_FIRST(data + len, f->isbold);
PUT_32BIT_MSB_FIRST(data + len + 4, f->height);
PUT_32BIT_MSB_FIRST(data + len + 8, f->charset);
}
return len + 12; /* also include three 4-byte ints */
put_asciz(bs, f->name);
put_uint32(bs, f->isbold);
put_uint32(bs, f->height);
put_uint32(bs, f->charset);
}
FontSpec *fontspec_deserialise(void *vdata, int maxsize, int *used)
{