Commit 0ffff1fe authored by Dom Lachowicz's avatar Dom Lachowicz Committed by Dom Lachowicz

Code borrowed from Expat. Takes a XML attribute+value string and turns it

2006-04-27 Dom Lachowicz <cinamod@hotmail.com>

        * rsvg-css.c (rsvg_css_parse_xml_attribute_string): Code borrowed from Expat.
        Takes a XML attribute+value string and turns it into attribute+value pairs.
        * rsvg-base.c (rsvg_processing_instruction): Implement <?xml-stylesheet?>
        as best I know how. (related to #338163)
parent ac6cac5d
2006-04-27 Dom Lachowicz <cinamod@hotmail.com>
* rsvg-css.c (rsvg_css_parse_xml_attribute_string): Code borrowed from Expat.
Takes a XML attribute+value string and turns it into attribute+value pairs.
* rsvg-base.c (rsvg_processing_instruction): Implement <?xml-stylesheet?>
as best I know how. (related to #338163)
2006-04-27 Dom Lachowicz <cinamod@hotmail.com>
* rsvg-base.c (rsvg_processing_instruction): Stub out how to handle
......
......@@ -684,12 +684,16 @@ rsvg_processing_instruction (void *ctx,
const xmlChar *target,
const xmlChar *data)
{
#if 0
/* http://www.w3.org/TR/xml-stylesheet/ */
RsvgHandle *handle = (RsvgHandle *)ctx;
if(!strcmp(target, "xml-stylesheet")) {
RsvgPropertyBag * atts = tokenize(data); /* todo: implement this function as best we can */
RsvgPropertyBag * atts;
char ** xml_atts;
xml_atts = rsvg_css_parse_xml_attribute_string(data);
atts = rsvg_property_bag_new ((const xmlChar **)xml_atts);
if(atts) {
const char * value;
......@@ -710,10 +714,10 @@ rsvg_processing_instruction (void *ctx,
}
}
g_strfreev (xml_atts);
rsvg_property_bag_free (atts);
}
}
#endif
}
/* TODO: this is indempotent, but not exactly threadsafe */
......
......@@ -971,3 +971,328 @@ rsvg_css_parse_overflow(const char * str, gboolean * inherit)
return 0;
}
/***********************************************************************/
/***********************************************************************/
/*
Code largely based on xmltok_impl.c from Expat
Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd
and Clark Cooper
Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006 Expat maintainers.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
typedef struct {
const char *name;
const char *valuePtr;
const char *valueEnd;
char normalized;
} ATTRIBUTE;
#define PTRCALL
#define PTRFASTCALL
#define PREFIX(x) x
typedef void ENCODING;
#define BYTE_TO_ASCII(enc, p) (*(p))
/* minimum bytes per character */
#define MINBPC(enc) 1
#define BYTE_TYPE(enc, p) utf8_byte_type_table[(int)(*(p))]
#define ASCII_SPACE 0x20
enum {
BT_NONXML,
BT_MALFORM,
BT_LT,
BT_AMP,
BT_RSQB,
BT_LEAD2,
BT_LEAD3,
BT_LEAD4,
BT_TRAIL,
BT_CR,
BT_LF,
BT_GT,
BT_QUOT,
BT_APOS,
BT_EQUALS,
BT_QUEST,
BT_EXCL,
BT_SOL,
BT_SEMI,
BT_NUM,
BT_LSQB,
BT_S,
BT_NMSTRT,
BT_COLON,
BT_HEX,
BT_DIGIT,
BT_NAME,
BT_MINUS,
BT_OTHER, /* known not to be a name or name start character */
BT_NONASCII, /* might be a name or name start character */
BT_PERCNT,
BT_LPAR,
BT_RPAR,
BT_AST,
BT_PLUS,
BT_COMMA,
BT_VERBAR
};
static const char utf8_byte_type_table [] = {
/* 0x00 */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
/* 0x04 */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
/* 0x08 */ BT_NONXML, BT_S, BT_LF, BT_NONXML,
/* 0x0C */ BT_NONXML, BT_CR, BT_NONXML, BT_NONXML,
/* 0x10 */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
/* 0x14 */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
/* 0x18 */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
/* 0x1C */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
/* 0x20 */ BT_S, BT_EXCL, BT_QUOT, BT_NUM,
/* 0x24 */ BT_OTHER, BT_PERCNT, BT_AMP, BT_APOS,
/* 0x28 */ BT_LPAR, BT_RPAR, BT_AST, BT_PLUS,
/* 0x2C */ BT_COMMA, BT_MINUS, BT_NAME, BT_SOL,
/* 0x30 */ BT_DIGIT, BT_DIGIT, BT_DIGIT, BT_DIGIT,
/* 0x34 */ BT_DIGIT, BT_DIGIT, BT_DIGIT, BT_DIGIT,
/* 0x38 */ BT_DIGIT, BT_DIGIT, BT_COLON, BT_SEMI,
/* 0x3C */ BT_LT, BT_EQUALS, BT_GT, BT_QUEST,
/* 0x40 */ BT_OTHER, BT_HEX, BT_HEX, BT_HEX,
/* 0x44 */ BT_HEX, BT_HEX, BT_HEX, BT_NMSTRT,
/* 0x48 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
/* 0x4C */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
/* 0x50 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
/* 0x54 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
/* 0x58 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_LSQB,
/* 0x5C */ BT_OTHER, BT_RSQB, BT_OTHER, BT_NMSTRT,
/* 0x60 */ BT_OTHER, BT_HEX, BT_HEX, BT_HEX,
/* 0x64 */ BT_HEX, BT_HEX, BT_HEX, BT_NMSTRT,
/* 0x68 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
/* 0x6C */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
/* 0x70 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
/* 0x74 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
/* 0x78 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_OTHER,
/* 0x7C */ BT_VERBAR, BT_OTHER, BT_OTHER, BT_OTHER,
/* 0x80 */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0x84 */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0x88 */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0x8C */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0x90 */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0x94 */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0x98 */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0x9C */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0xA0 */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0xA4 */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0xA8 */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0xAC */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0xB0 */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0xB4 */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0xB8 */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0xBC */ BT_TRAIL, BT_TRAIL, BT_TRAIL, BT_TRAIL,
/* 0xC0 */ BT_LEAD2, BT_LEAD2, BT_LEAD2, BT_LEAD2,
/* 0xC4 */ BT_LEAD2, BT_LEAD2, BT_LEAD2, BT_LEAD2,
/* 0xC8 */ BT_LEAD2, BT_LEAD2, BT_LEAD2, BT_LEAD2,
/* 0xCC */ BT_LEAD2, BT_LEAD2, BT_LEAD2, BT_LEAD2,
/* 0xD0 */ BT_LEAD2, BT_LEAD2, BT_LEAD2, BT_LEAD2,
/* 0xD4 */ BT_LEAD2, BT_LEAD2, BT_LEAD2, BT_LEAD2,
/* 0xD8 */ BT_LEAD2, BT_LEAD2, BT_LEAD2, BT_LEAD2,
/* 0xDC */ BT_LEAD2, BT_LEAD2, BT_LEAD2, BT_LEAD2,
/* 0xE0 */ BT_LEAD3, BT_LEAD3, BT_LEAD3, BT_LEAD3,
/* 0xE4 */ BT_LEAD3, BT_LEAD3, BT_LEAD3, BT_LEAD3,
/* 0xE8 */ BT_LEAD3, BT_LEAD3, BT_LEAD3, BT_LEAD3,
/* 0xEC */ BT_LEAD3, BT_LEAD3, BT_LEAD3, BT_LEAD3,
/* 0xF0 */ BT_LEAD4, BT_LEAD4, BT_LEAD4, BT_LEAD4,
/* 0xF4 */ BT_LEAD4, BT_NONXML, BT_NONXML, BT_NONXML,
/* 0xF8 */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
/* 0xFC */ BT_NONXML, BT_NONXML, BT_MALFORM, BT_MALFORM
};
/* This must only be called for a well-formed start-tag or empty
element tag. Returns the number of attributes. Pointers to the
first attsMax attributes are stored in atts.
*/
static int PTRCALL
PREFIX(getAtts)(const ENCODING *enc, const char *ptr,
int attsMax, ATTRIBUTE *atts)
{
enum { other, inName, inValue } state = inName;
int nAtts = 0;
int open = 0; /* defined when state == inValue;
initialization just to shut up compilers */
for (ptr += MINBPC(enc);; ptr += MINBPC(enc)) {
switch (BYTE_TYPE(enc, ptr)) {
#define START_NAME \
if (state == other) { \
if (nAtts < attsMax) { \
atts[nAtts].name = ptr; \
atts[nAtts].normalized = 1; \
} \
state = inName; \
}
#define LEAD_CASE(n) \
case BT_LEAD ## n: START_NAME ptr += (n - MINBPC(enc)); break;
LEAD_CASE(2) LEAD_CASE(3) LEAD_CASE(4)
#undef LEAD_CASE
case BT_NONASCII:
case BT_NMSTRT:
case BT_HEX:
START_NAME
break;
#undef START_NAME
case BT_QUOT:
if (state != inValue) {
if (nAtts < attsMax)
atts[nAtts].valuePtr = ptr + MINBPC(enc);
state = inValue;
open = BT_QUOT;
}
else if (open == BT_QUOT) {
state = other;
if (nAtts < attsMax)
atts[nAtts].valueEnd = ptr;
nAtts++;
}
break;
case BT_APOS:
if (state != inValue) {
if (nAtts < attsMax)
atts[nAtts].valuePtr = ptr + MINBPC(enc);
state = inValue;
open = BT_APOS;
}
else if (open == BT_APOS) {
state = other;
if (nAtts < attsMax)
atts[nAtts].valueEnd = ptr;
nAtts++;
}
break;
case BT_AMP:
if (nAtts < attsMax)
atts[nAtts].normalized = 0;
break;
case BT_S:
if (state == inName)
state = other;
else if (state == inValue
&& nAtts < attsMax
&& atts[nAtts].normalized
&& (ptr == atts[nAtts].valuePtr
|| BYTE_TO_ASCII(enc, ptr) != ASCII_SPACE
|| BYTE_TO_ASCII(enc, ptr + MINBPC(enc)) == ASCII_SPACE
|| BYTE_TYPE(enc, ptr + MINBPC(enc)) == open))
atts[nAtts].normalized = 0;
break;
case BT_CR: case BT_LF:
/* This case ensures that the first attribute name is counted
Apart from that we could just change state on the quote. */
if (state == inName)
state = other;
else if (state == inValue && nAtts < attsMax)
atts[nAtts].normalized = 0;
break;
case BT_GT:
case BT_SOL:
if (state != inValue)
return nAtts;
break;
default:
break;
}
}
/* not reached */
}
static int PTRFASTCALL
PREFIX(nameLength)(const ENCODING *enc, const char *ptr)
{
const char *start = ptr;
for (;;) {
switch (BYTE_TYPE(enc, ptr)) {
#define LEAD_CASE(n) \
case BT_LEAD ## n: ptr += n; break;
LEAD_CASE(2) LEAD_CASE(3) LEAD_CASE(4)
#undef LEAD_CASE
case BT_NONASCII:
case BT_NMSTRT:
#ifdef XML_NS
case BT_COLON:
#endif
case BT_HEX:
case BT_DIGIT:
case BT_NAME:
case BT_MINUS:
ptr += MINBPC(enc);
break;
default:
return (int)(ptr - start);
}
}
}
char **
rsvg_css_parse_xml_attribute_string(const char * attribute_string)
{
int i, nb_atts;
ATTRIBUTE *attributes;
int attrSize = 16;
ENCODING * enc = NULL;
char ** atts;
char * _attribute_string;
_attribute_string = g_strdup_printf("<tag %s />\n", attribute_string);
attributes = g_new(ATTRIBUTE, attrSize);
nb_atts = getAtts(enc, _attribute_string, attrSize, attributes);
if(nb_atts > attrSize) {
attrSize = nb_atts;
g_free(attributes);
attributes = g_new (ATTRIBUTE, attrSize);
nb_atts = getAtts(enc, _attribute_string, attrSize, attributes);
}
atts = g_new0(char *, ((2 * nb_atts) + 1));
for(i = 0; i < nb_atts; i++) {
atts[(2 * i)] = g_strdup(attributes[i].name);
atts[(2 * i)][nameLength(enc, attributes[i].name)] = '\0';
atts[(2 * i) + 1] = g_strdup(attributes[i].valuePtr);
atts[(2 * i) + 1][attributes[i].valueEnd - attributes[i].valuePtr] = '\0';
}
g_free(attributes);
g_free(_attribute_string);
return atts;
}
......@@ -97,6 +97,8 @@ rsvg_css_parse_number_list(const char * in_str, guint * out_list_len);
gboolean
rsvg_css_parse_overflow(const char * str, gboolean * inherit);
char **
rsvg_css_parse_xml_attribute_string(const char * attribute_string);
G_END_DECLS
......
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