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xmllite: Implement ReadValueChunk().

This commit is contained in:
Nikolay Sivov 2013-03-14 15:08:29 +04:00 committed by Alexandre Julliard
parent 0a3cc8b85d
commit b1d7517ab1
2 changed files with 97 additions and 61 deletions
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144
dlls/xmllite/reader.c
View File

@ -137,14 +137,23 @@ typedef struct
static const struct IUnknownVtbl xmlreaderinputvtbl;
/* Structure to hold parsed string of specific length.
Reader stores node value as 'start' pointer, on request
a null-terminated version of it is allocated.
To init a strval variable use reader_init_strval(),
to set strval as a reader value use reader_set_strval().
*/
typedef struct
{
WCHAR *str;
UINT len;
WCHAR *start; /* input position where value starts */
UINT len; /* length in WCHARs, altered after ReadValueChunk */
WCHAR *str; /* allocated null-terminated string */
} strval;
static WCHAR emptyW[] = {0};
static const strval strval_empty = {emptyW, 0};
static const strval strval_empty = {emptyW, 0, emptyW};
struct attribute
{
@ -317,6 +326,12 @@ static void reader_free_strvalued(xmlreader *reader, strval *v)
}
}
static inline void reader_init_strvalue(WCHAR *str, UINT len, strval *v)
{
v->start = v->str = str;
v->len = len;
}
static void reader_free_strvalue(xmlreader *reader, XmlReaderStringValue type)
{
reader_free_strvalued(reader, &reader->strvalues[type]);
@ -398,6 +413,7 @@ static void reader_set_strvalue(xmlreader *reader, XmlReaderStringValue type, co
if (!value)
{
v->str = NULL;
v->start = NULL;
v->len = 0;
return;
}
@ -405,13 +421,23 @@ static void reader_set_strvalue(xmlreader *reader, XmlReaderStringValue type, co
if (value->str == strval_empty.str)
*v = *value;
else
{
if (type == StringValue_Value)
{
/* defer allocation for value string */
v->str = NULL;
v->start = value->start;
v->len = value->len;
}
else
{
v->str = reader_alloc(reader, (value->len + 1)*sizeof(WCHAR));
memcpy(v->str, value->str, value->len*sizeof(WCHAR));
memcpy(v->str, value->start, value->len*sizeof(WCHAR));
v->str[value->len] = 0;
v->len = value->len;
}
}
}
static inline int is_reader_pending(xmlreader *reader)
{
@ -847,8 +873,7 @@ static HRESULT reader_parse_versionnum(xmlreader *reader, strval *val)
if (ptr2 == ptr) return WC_E_DIGIT;
TRACE("version=%s\n", debugstr_wn(start, ptr-start));
val->str = start;
val->len = ptr-start;
reader_init_strvalue(start, ptr-start, val);
reader_skipn(reader, ptr-ptr2);
return S_OK;
}
@ -875,8 +900,7 @@ static HRESULT reader_parse_versioninfo(xmlreader *reader)
if (!reader_skipspaces(reader)) return WC_E_WHITESPACE;
if (reader_cmp(reader, versionW)) return WC_E_XMLDECL;
name.str = reader_get_cur(reader);
name.len = 7;
reader_init_strvalue(reader_get_cur(reader), 7, &name);
/* skip 'version' */
reader_skipn(reader, 7);
@ -986,8 +1010,7 @@ static HRESULT reader_parse_sddecl(xmlreader *reader)
if (!reader_skipspaces(reader)) return WC_E_WHITESPACE;
if (reader_cmp(reader, standaloneW)) return S_FALSE;
name.str = reader_get_cur(reader);
name.len = 10;
reader_init_strvalue(reader_get_cur(reader), 10, &name);
/* skip 'standalone' */
reader_skipn(reader, 10);
@ -1087,11 +1110,12 @@ static HRESULT reader_parse_comment(xmlreader *reader)
{
if (ptr[2] == '>')
{
strval value = { start, ptr-start };
strval value;
TRACE("%s\n", debugstr_wn(start, ptr-start));
/* skip '-->' */
reader_skipn(reader, 3);
reader_init_strvalue(start, ptr-start, &value);
reader_set_strvalue(reader, StringValue_LocalName, &strval_empty);
reader_set_strvalue(reader, StringValue_QualifiedName, &strval_empty);
reader_set_strvalue(reader, StringValue_Value, &value);
@ -1223,8 +1247,7 @@ static HRESULT reader_parse_name(xmlreader *reader, strval *name)
reader->resume[XmlReadResume_Name] = NULL;
TRACE("name %s:%d\n", debugstr_wn(start, ptr-start), (int)(ptr-start));
name->str = start;
name->len = ptr-start;
reader_init_strvalue(start, ptr-start, name);
return S_OK;
}
@ -1310,7 +1333,7 @@ static HRESULT reader_parse_pi(xmlreader *reader)
{
if (ptr[1] == '>')
{
strval value = { start, ptr-start };
strval value;
TRACE("%s\n", debugstr_wn(start, ptr-start));
/* skip '?>' */
@ -1318,6 +1341,7 @@ static HRESULT reader_parse_pi(xmlreader *reader)
reader->nodetype = XmlNodeType_ProcessingInstruction;
reader->resumestate = XmlReadResumeState_Initial;
reader->resume[XmlReadResume_Body] = NULL;
reader_init_strvalue(start, ptr-start, &value);
reader_set_strvalue(reader, StringValue_LocalName, &target);
reader_set_strvalue(reader, StringValue_QualifiedName, &target);
reader_set_strvalue(reader, StringValue_Value, &value);
@ -1442,8 +1466,7 @@ static HRESULT reader_parse_pub_literal(xmlreader *reader, strval *literal)
cur = reader_get_cur(reader);
}
literal->str = start;
literal->len = cur-start;
reader_init_strvalue(start, cur-start, literal);
TRACE("%s\n", debugstr_wn(start, cur-start));
return S_OK;
}
@ -1473,8 +1496,7 @@ static HRESULT reader_parse_externalid(xmlreader *reader)
hr = reader_parse_pub_literal(reader, &pub);
if (FAILED(hr)) return hr;
name.str = publicW;
name.len = strlenW(publicW);
reader_init_strvalue(publicW, strlenW(publicW), &name);
return reader_add_attr(reader, &name, &pub);
}
}
@ -1490,8 +1512,7 @@ static HRESULT reader_parse_externalid(xmlreader *reader)
hr = reader_parse_sys_literal(reader, &sys);
if (FAILED(hr)) return hr;
name.str = systemW;
name.len = strlenW(systemW);
reader_init_strvalue(systemW, strlenW(systemW), &name);
return reader_add_attr(reader, &name, &sys);
}
@ -1573,8 +1594,7 @@ static HRESULT reader_parse_local(xmlreader *reader, strval *local)
else
reader->resume[XmlReadResume_Local] = NULL;
local->str = start;
local->len = ptr-start;
reader_init_strvalue(start, ptr-start, local);
return S_OK;
}
@ -1605,8 +1625,9 @@ static HRESULT reader_parse_qname(xmlreader *reader, strval *prefix, strval *loc
hr = reader_parse_local(reader, local);
if (FAILED(hr)) return hr;
prefix->str = reader->resume[XmlReadResume_Name];
prefix->len = local->str - prefix->str - 1;
reader_init_strvalue(reader->resume[XmlReadResume_Name],
local->start - reader->resume[XmlReadResume_Name] - 1,
prefix);
}
else
{
@ -1622,8 +1643,7 @@ static HRESULT reader_parse_qname(xmlreader *reader, strval *prefix, strval *loc
/* got a qualified name */
if (*ptr == ':')
{
prefix->str = start;
prefix->len = ptr-start;
reader_init_strvalue(start, ptr-start, prefix);
/* skip ':' */
reader_skipn(reader, 1);
@ -1632,25 +1652,22 @@ static HRESULT reader_parse_qname(xmlreader *reader, strval *prefix, strval *loc
}
else
{
local->str = reader->resume[XmlReadResume_Name];
local->len = ptr-local->str;
prefix->str = NULL;
prefix->len = 0;
reader_init_strvalue(reader->resume[XmlReadResume_Name], ptr-reader->resume[XmlReadResume_Name], local);
reader_init_strvalue(NULL, 0, prefix);
}
}
local->str = start;
local->len = ptr-start;
reader_init_strvalue(start, ptr-start, local);
if (prefix->len)
TRACE("qname %s:%s\n", debugstr_wn(prefix->str, prefix->len), debugstr_wn(local->str, local->len));
TRACE("qname %s:%s\n", debugstr_wn(prefix->start, prefix->len), debugstr_wn(local->start, local->len));
else
TRACE("ncname %s\n", debugstr_wn(local->str, local->len));
TRACE("ncname %s\n", debugstr_wn(local->start, local->len));
qname->str = prefix->str ? prefix->str : local->str;
reader_init_strvalue(prefix->start ? prefix->start : local->start,
/* count ':' too */
qname->len = (prefix->len ? prefix->len + 1 : 0) + local->len;
(prefix->len ? prefix->len + 1 : 0) + local->len,
qname);
reader->resume[XmlReadResume_Name] = NULL;
reader->resume[XmlReadResume_Local] = NULL;
@ -1803,11 +1820,12 @@ static HRESULT reader_parse_cdata(xmlreader *reader)
{
if (*ptr == ']' && *(ptr+1) == ']' && *(ptr+2) == '>')
{
strval value = { start, ptr-start };
strval value;
TRACE("%s\n", debugstr_wn(start, ptr-start));
/* skip ']]>' */
reader_skipn(reader, 3);
reader_init_strvalue(start, ptr-start, &value);
reader_set_strvalue(reader, StringValue_LocalName, &strval_empty);
reader_set_strvalue(reader, StringValue_QualifiedName, &strval_empty);
reader_set_strvalue(reader, StringValue_Value, &value);
@ -2240,16 +2258,16 @@ static HRESULT WINAPI xmlreader_GetPrefix(IXmlReader* iface,
return E_NOTIMPL;
}
static HRESULT WINAPI xmlreader_GetValue(IXmlReader* iface, LPCWSTR *value, UINT *len)
static HRESULT WINAPI xmlreader_GetValue(IXmlReader* iface, const WCHAR **value, UINT *len)
{
xmlreader *This = impl_from_IXmlReader(iface);
xmlreader *reader = impl_from_IXmlReader(iface);
strval *val = &reader->strvalues[StringValue_Value];
TRACE("(%p)->(%p %p)\n", This, value, len);
TRACE("(%p)->(%p %p)\n", reader, value, len);
*value = NULL;
if ((This->nodetype == XmlNodeType_Comment && !This->strvalues[StringValue_Value].str) ||
is_reader_pending(This))
if ((reader->nodetype == XmlNodeType_Comment && !val->str) || is_reader_pending(reader))
{
XmlNodeType type;
HRESULT hr;
@ -2258,21 +2276,43 @@ static HRESULT WINAPI xmlreader_GetValue(IXmlReader* iface, LPCWSTR *value, UINT
if (FAILED(hr)) return hr;
/* return if still pending, partially read values are not reported */
if (is_reader_pending(This)) return E_PENDING;
if (is_reader_pending(reader)) return E_PENDING;
}
*value = This->strvalues[StringValue_Value].str;
if (len) *len = This->strvalues[StringValue_Value].len;
if (!val->str)
{
val->str = reader_alloc(reader, (val->len+1)*sizeof(WCHAR));
if (!val->str) return E_OUTOFMEMORY;
memcpy(val->str, val->start, val->len*sizeof(WCHAR));
val->str[val->len] = 0;
}
*value = val->str;
if (len) *len = val->len;
return S_OK;
}
static HRESULT WINAPI xmlreader_ReadValueChunk(IXmlReader* iface,
WCHAR *buffer,
UINT chunk_size,
UINT *read)
static HRESULT WINAPI xmlreader_ReadValueChunk(IXmlReader* iface, WCHAR *buffer, UINT chunk_size, UINT *read)
{
FIXME("(%p %p %u %p): stub\n", iface, buffer, chunk_size, read);
return E_NOTIMPL;
xmlreader *reader = impl_from_IXmlReader(iface);
strval *val = &reader->strvalues[StringValue_Value];
UINT len;
TRACE("(%p)->(%p %u %p)\n", reader, buffer, chunk_size, read);
/* Value is already allocated, chunked reads are not possible. */
if (val->str) return S_FALSE;
if (val->len)
{
len = min(chunk_size, val->len);
memcpy(buffer, val->start, len);
val->start += len;
val->len -= len;
if (read) *read = len;
}
return S_OK;
}
static HRESULT WINAPI xmlreader_GetBaseUri(IXmlReader* iface,

6
dlls/xmllite/tests/reader.c
View File

@ -1288,23 +1288,20 @@ static void test_readvaluechunk(void)
c = 0;
b = 0;
hr = IXmlReader_ReadValueChunk(reader, &b, 1, &c);
todo_wine {
ok(hr == S_OK, "got %08x\n", hr);
ok(c == 1, "got %u\n", c);
ok(b == ' ', "got %x\n", b);
}
/* portion read as chunk is skipped from resulting node value */
value = NULL;
hr = IXmlReader_GetValue(reader, &value, NULL);
ok(hr == S_OK, "got %08x\n", hr);
todo_wine
ok(value[0] == 'c', "got %s\n", wine_dbgstr_w(value));
/* once value is returned/allocated it's not possible to read by chunk */
c = 0;
b = 0;
hr = IXmlReader_ReadValueChunk(reader, &b, 1, &c);
todo_wine
ok(hr == S_FALSE, "got %08x\n", hr);
ok(c == 0, "got %u\n", c);
ok(b == 0, "got %x\n", b);
@ -1312,7 +1309,6 @@ todo_wine
value = NULL;
hr = IXmlReader_GetValue(reader, &value, NULL);
ok(hr == S_OK, "got %08x\n", hr);
todo_wine
ok(value[0] == 'c', "got %s\n", wine_dbgstr_w(value));
IXmlReader_Release(reader);