/* find a word in a list using '|' as separator,
* optionally fold case to lower case.
*/
int strfind(const char *keytable, const char *str, int casefold)
{
char buf[128];
int c, len;
const char *p;
if (casefold) {
pstrcpy(buf, sizeof(buf), str);
str = buf;
css_strtolower(buf, sizeof(buf));
}
c = *str;
len = strlen(str);
/* need to special case the empty string */
if (len == 0)
return strstr(keytable, "||") != NULL;
/* initial and trailing | are optional */
/* they do not cause the empty string to match */
for (p = keytable;;) {
if (!memcmp(p, str, len) && (p[len] == '|' || p[len] == '\0'))
return 1;
for (;;) {
p = strchr(p + 1, c);
if (!p)
return 0;
if (p[-1] == '|')
break;
}
}
}
static const char *css_attr_strlower(CSSBox *box, CSSIdent attr_id)
{
static char buf[200];
const char *value;
value = css_attr_str(box, attr_id);
if (!value)
return NULL;
pstrcpy(buf, sizeof(buf), value);
css_strtolower(buf, sizeof(buf));
return buf;
}
static int parse_tag(XMLState *s, const char *buf)
{
char tag[256], *q, len, eot;
char attr_name[256];
char value[2048];
const char *p;
CSSIdent css_tag;
CSSBox *box, *box1;
CSSAttribute *first_attr, **pattr, *attr;
p = buf;
/* ignore XML commands */
if (p[0] == '!' || p[0] == '?')
return XML_STATE_TEXT;
/* end of tag check */
eot = 0;
if (*p == '/') {
p++;
eot = 1;
}
/* parse the tag name */
get_str(&p, tag, sizeof(tag), "/");
if (tag[0] == '\0') {
/* special closing tag */
if (eot) {
css_tag = CSS_ID_NIL;
goto end_of_tag;
} else {
xml_error(s, "invalid null tag");
return XML_STATE_TEXT;
}
}
if (s->ignore_case)
css_strtolower(tag, sizeof(tag));
css_tag = css_new_ident(tag);
/* XXX: should test html_syntax, but need more patches */
if (s->is_html && (css_tag == CSS_ID_style ||
css_tag == CSS_ID_script))
goto pretag;
if (eot)
goto end_of_tag;
/* parse attributes */
first_attr = NULL;
pattr = &first_attr;
for (;;) {
skip_spaces(&p);
if (*p == '\0' || *p == '/')
break;
get_str(&p, attr_name, sizeof(attr_name), "=/");
if (s->ignore_case)
css_strtolower(attr_name, sizeof(attr_name));
if (*p == '=') {
int och, ch;
p++;
skip_spaces(&p);
och = *p;
/* in html, we can put non string values */
if (och != '\'' && och != '\"') {
if (!s->html_syntax)
xml_error(s, "string expected for attribute '%s'", attr_name);
q = value;
while (*p != '\0' && !strchr(" \t\n\r<>", *p)) {
ch = parse_entity(&p);
if ((q - value) < (int)sizeof(value) - 1)
*q++ = ch;
}
*q = '\0';
} else {
p++;
q = value;
while (*p != och && *p != '\0' && *p != '<') {
ch = parse_entity(&p);
if ((q - value) < (int)sizeof(value) - 1)
*q++ = ch;
}
*q = '\0';
if (*p != och) {
xml_error(s, "malformed string in attribute '%s'", attr_name);
} else {
p++;
}
}
} else {
value[0] = '\0';
}
attr = box_new_attr(css_new_ident(attr_name), value);
if (attr) {
*pattr = attr;
pattr = &attr->next;
}
}
/* close some tags (correct HTML mistakes) */
if (s->html_syntax) {
CSSBox *box1;
const HTMLClosedTags *ct;
ct = html_closed_tags;
for (;;) {
if (!ct->tag)
break;
if (css_tag == ct->tag) {
box1 = s->box;
while (box1 != NULL &&
css_get_enum(css_ident_str(box1->tag), ct->tag_closed) >= 0) {
html_eval_tag(s, box1);
box1 = box1->parent;
}
if (box1) {
s->box = box1;
}
break;
}
ct++;
}
}
/* create the new box and add it */
box = css_new_box(css_tag, NULL);
box->attrs = first_attr;
if (!s->box) {
s->root_box = box;
} else {
css_make_child_box(s->box);
css_add_box(s->box, box);
}
s->box = box;
if ((s->flags & XML_DOCBOOK) &&
css_tag == CSS_ID_programlisting) {
pretag:
pstrcpy(s->pretag, sizeof(s->pretag), tag);
s->pretaglen = strlen(s->pretag);
return XML_STATE_PRETAG;
}
len = strlen(buf);
/* end of tag. If html, check also some common mistakes. FORM is
considered as self closing to avoid any content problems */
if ((len > 0 && buf[len - 1] == '/') ||
(s->html_syntax && (css_tag == CSS_ID_br ||
css_tag == CSS_ID_hr ||
css_tag == CSS_ID_meta ||
css_tag == CSS_ID_link ||
css_tag == CSS_ID_form ||
css_tag == CSS_ID_base ||
css_tag == CSS_ID_input ||
css_tag == CSS_ID_basefont ||
css_tag == CSS_ID_img))) {
end_of_tag:
box1 = s->box;
if (box1) {
if (s->html_syntax) {
if (css_tag != CSS_ID_NIL) {
/* close all non matching tags */
while (box1 != NULL && box1->tag != css_tag) {
html_eval_tag(s, box1);
box1 = box1->parent;
}
}
if (!box1) {
if (css_tag != CSS_ID_form)
xml_error(s, "unmatched closing tag </%s>",
css_ident_str(css_tag));
} else {
html_eval_tag(s, box1);
s->box = box1->parent;
}
} else {
if (css_tag != CSS_ID_NIL && box1->tag != css_tag) {
xml_error(s, "unmatched closing tag </%s> for <%s>",
css_ident_str(css_tag), css_ident_str(box1->tag));
} else {
if (s->is_html)
html_eval_tag(s, box1);
s->box = box1->parent;
}
}
}
}
return XML_STATE_TEXT;
}
static void parse_simple_selector(CSSSimpleSelector *ss, CSSParseState *b,
int *ch_ptr)
{
char value[1024];
char tag[64];
char tag_id[64];
char attribute[64];
int ch, pclass, val;
CSSStyleSheetAttributeEntry *first_attr, **last_attr;
ch = *ch_ptr;
/* read the tag */
first_attr = NULL;
last_attr = &first_attr;
tag[0] = '\0';
tag_id[0] = '\0';
pclass = 0;
read_ident(b, &ch, tag, sizeof(tag));
if (b->ignore_case)
css_strtolower(tag, sizeof(tag));
/* read '.class', '[xxx]', ':pseudo-class' */
for (;;) {
bskip_spaces(b, &ch);
if (ch == '.') {
/* read the class and add it as an attribute */
ch = bgetc(b);
read_ident(b, &ch, value, sizeof(value));
add_attribute(&last_attr, CSS_ID_class, CSS_ATTR_OP_EQUAL, value);
} else if (ch == '#') {
/* read the id */
ch = bgetc(b);
read_ident(b, &ch, tag_id, sizeof(tag_id));
} else if (ch == '[') {
/* read the attribute */
int op;
ch = bgetc(b);
read_ident(b, &ch, attribute, sizeof(attribute));
if (b->ignore_case)
css_strtolower(attribute, sizeof(attribute));
switch (ch) {
case '~':
op = CSS_ATTR_OP_IN_LIST;
ch = bgetc(b);
goto get_value;
case '=':
op = CSS_ATTR_OP_EQUAL;
goto get_value;
case '|':
op = CSS_ATTR_OP_IN_HLIST;
ch = bgetc(b);
get_value:
ch = bgetc(b);
if (ch == '\"' || ch == '\'') {
read_string(b, &ch, value, sizeof(value));
} else {
read_ident(b, &ch, value, sizeof(value));
}
break;
case ']':
op = CSS_ATTR_OP_SET;
value[0] = '\0';
break;
default:
dprintf("op: incorrect char '%c'\n", ch);
return; /* cannot do more */
}
if (ch == ']')
ch = bgetc(b);
add_attribute(&last_attr, css_new_ident(attribute), op, value);
} else if (ch == ':') {
ch = bgetc(b);
read_ident(b, &ch, value, sizeof(value));
val = css_get_enum(value, "first-child,link,visited,active,hover,focus,first-line,first-letter,before,after");
if (val >= 0)
pclass |= 1 << val;
} else {
break;
}
}
memset(ss, 0, sizeof(CSSSimpleSelector));
if (tag[0] == '\0') {
ss->tag = CSS_ID_ALL;
} else {
ss->tag = css_new_ident(tag);
}
if (tag_id[0] != '\0') {
/* XXX: not fully correct, but good enough for now */
add_attribute(&last_attr, CSS_ID_id, CSS_ATTR_OP_EQUAL, value);
/* we also add the id, just in case we use it in the futur */
ss->tag_id = css_new_ident(tag_id);
}
ss->attrs = first_attr;
ss->pclasses = pclass;
*ch_ptr = ch;
}
/* parse the properties and return a list of properties. NOTE: 'b' is
only used for error reporting */
CSSProperty *css_parse_properties(CSSParseState *b, const char *props_str)
{
const char *p;
char property[64];
char buf[1024], buf2[64];
int property_index, type, val, nb_args, i, unit;
int property_index1;
CSSPropertyValue args[MAX_ARGS];
CSSProperty **last_prop, *first_prop;
const CSSPropertyDef *def;
val = 0;
first_prop = NULL;
last_prop = &first_prop;
p = props_str;
for (;;) {
get_str(&p, property, sizeof(property), ":");
if (*p == '\0')
break;
if (*p == ':')
p++;
skip_spaces(&p);
/* find the property */
def = css_properties;
for (;;) {
if (def >= css_properties + NB_PROPERTIES) {
css_error1(b, "unsupported property '%s'", property);
/* property not found skip it: find next ';' */
while (*p && *p != ';')
p++;
goto next;
}
if (!strcmp(def->name, property))
break;
def++;
}
property_index = def - css_properties;
type = def->type;
nb_args = 0;
for (;;) {
/* get argument */
skip_spaces(&p);
if (*p == ';' || *p == '\0')
break;
/* more than 1 argument only if wanted */
if (nb_args >= 1 &&
!(type & (CSS_TYPE_FOUR|CSS_TYPE_TWO|CSS_TYPE_ARGS)))
break;
if (nb_args >= 2 &&
!(type & (CSS_TYPE_FOUR|CSS_TYPE_ARGS)))
break;
if (nb_args >= 4 &&
(!type & CSS_TYPE_ARGS))
break;
if (nb_args >= MAX_ARGS)
break;
if (*p == '\"' || *p == '\'') {
/* string parsing */
/* if no string expected, continue parsing */
if (!(type & CSS_TYPE_STRING))
goto next;
args[nb_args].u.str = css_parse_string(&p);
unit = CSS_VALUE_STRING;
goto got_val;
}
if (type & CSS_TYPE_ATTR) {
/* attr(x) support */
if (strstart(p, "attr(", &p)) {
get_str(&p, buf, sizeof(buf), ");");
if (buf[0] != '\0') {
if (*p != ')')
goto next;
p++;
if (b->ignore_case)
css_strtolower(buf, sizeof(buf));
args[nb_args].u.attr_id = css_new_ident(buf);
unit = CSS_VALUE_ATTR;
goto got_val;
}
}
}
if (type & CSS_TYPE_COUNTER) {
/* counter(x[,type]) support */
if (strstart(p, "counter(", &p)) {
get_str(&p, buf, sizeof(buf), ",);");
args[nb_args].u.counter.type = CSS_LIST_STYLE_TYPE_DECIMAL;
if (*p == ',') {
p++;
get_str(&p, buf2, sizeof(buf2), ");");
val = css_get_enum(buf2, list_style_enum);
if (val >= 0)
args[nb_args].u.counter.type = val;
}
if (*p != ')')
goto next;
p++;
args[nb_args].u.counter.counter_id = css_new_ident(buf);
unit = CSS_VALUE_COUNTER;
goto got_val;
}
}
get_str(&p, buf, sizeof(buf), ";");
unit = CSS_UNIT_NONE;
if (type & CSS_TYPE_AUTO) {
if (!strcmp(buf, "auto")) {
val = CSS_AUTO;
goto got_val;
}
}
if (!(type & CSS_TYPE_NOINHERIT)) {
if (!strcmp(buf, "inherit")) {
val = CSS_INHERIT;
goto got_val;
}
}
if (type & CSS_TYPE_INTEGER) {
const char *p1;
val = strtol(buf, (char **)&p1, 0);
if (*p1 == '\0') {
unit = CSS_VALUE_INTEGER;
goto got_val;
}
}
if (type & CSS_TYPE_LENGTH) {
if (!css_get_length(&val, &unit, buf))
goto got_val;
}
if (type & CSS_TYPE_BORDER_STYLE) {
val = css_get_enum(buf, border_style_enum);
if (val >= 0)
goto got_val;
}
if (type & CSS_TYPE_LIST_STYLE) {
val = css_get_enum(buf, list_style_enum);
if (val >= 0)
goto got_val;
}
if (type & CSS_TYPE_ENUM) {
val = css_get_enum(buf, def->name + strlen(def->name) + 1);
if (val >= 0)
goto got_val;
}
if (type & CSS_TYPE_IDENT) {
val = css_new_ident(buf);
unit = CSS_VALUE_IDENT;
goto got_val;
}
if (type & CSS_TYPE_FONT_FAMILY) {
val = css_get_font_family(buf);
if (val == 0)
val = CSS_INHERIT;
goto got_val;
}
if (type & CSS_TYPE_COLOR) {
QEColor color;
/* XXX: color parsing is not always discriminant */
if (!css_get_color(&color, buf)) {
val = color;
unit = CSS_VALUE_COLOR;
goto got_val;
}
}
css_error1(b, "unrecognized value '%s' for property '%s'",
buf, def->name);
goto next;
got_val:
/* specific handling may be necessary. We do them here */
switch (property_index) {
case CSS_font_size:
if (unit == CSS_UNIT_NONE) {
if (val == 7) {
/* smaller */
unit = CSS_UNIT_PERCENT;
val = (CSS_LENGTH_FRAC_BASE * 10) / 12;
} else if (val == 8) {
/* larger */
unit = CSS_UNIT_PERCENT;
val = (CSS_LENGTH_FRAC_BASE * 12) / 10;
} else if (val >= 0) {
unit = CSS_UNIT_IN;
val = get_font_size(val);
} else {
goto next;
}
}
break;
case CSS_border:
case CSS_border_left:
case CSS_border_top:
case CSS_border_right:
case CSS_border_bottom:
if (unit == CSS_VALUE_COLOR) {
property_index1 = property_index +
CSS_border_color - CSS_border;
} else if (unit == CSS_UNIT_NONE) {
property_index1 = property_index +
CSS_border_style - CSS_border;
} else {
property_index1 = property_index +
CSS_border_width - CSS_border;
}
args[0].type = unit;
args[0].u.val = val;
if (property_index == CSS_border) {
for (i = 0; i < 4; i++)
css_add_prop(&last_prop, property_index1 + 1 + i,
&args[0]);
} else {
css_add_prop(&last_prop, property_index1, &args[0]);
}
/* parse next args without storing them */
continue;
}
args[nb_args].type = unit;
if (unit != CSS_VALUE_STRING &&
unit != CSS_VALUE_ATTR &&
unit != CSS_VALUE_COUNTER) {
args[nb_args].u.val = val;
}
nb_args++;
}
if (type & CSS_TYPE_SPECIAL)
goto next;
if (type & CSS_TYPE_FOUR) {
CSSPropertyValue v1, v2, v3, v4;
/* handle specifically the four args case */
v1 = args[0];
switch (nb_args) {
case 1:
args[1] = args[2] = args[3] = v1;
break;
case 2:
v2 = args[1];
args[1] = args[3] = v1;
args[0] = args[2] = v2;
break;
case 3:
v2 = args[1];
v3 = args[2];
args[1] = v1;
args[0] = args[2] = v2;
args[3] = v3;
break;
case 4:
default:
v2 = args[1];
v3 = args[2];
v4 = args[3];
args[1] = v1;
args[2] = v2;
args[3] = v3;
args[0] = v4;
break;
}
for (i = 0; i < 4; i++)
css_add_prop(&last_prop, property_index + 1 + i, &args[i]);
} else if (type & CSS_TYPE_TWO) {
if (nb_args == 1)
args[1] = args[0];
for (i = 0; i < 2; i++)
css_add_prop(&last_prop, property_index + 1 + i, &args[i]);
} else if (type & CSS_TYPE_ARGS) {
/* unbounded number of args */
css_add_prop_values(&last_prop, property_index, nb_args, args);
} else {
css_add_prop(&last_prop, property_index, &args[0]);
}
next:
skip_spaces(&p);
if (*p != ';')
break;
p++;
}
return first_prop;
}
