// . s[maxLen] should be the NULL
// . returns full length of entity @ "s" if there is a valid one, 0 otherwise
// . sets *c to the iso character the entity represents (if there is one)
// JAB: const-ness for optimizer...
int32_t getEntity_a ( char *s , int32_t maxLen , uint32_t *c ) {
// ensure there's an & as first char
if ( s[0] != '&' ) return 0;
// compute maximum length of entity, if it's indeed an entity
int32_t len = 1;
if ( s[len]=='#' ) len++;
// cut it off after 9 chars to save time
while ( len < maxLen && len < 9 && is_alnum_a(s[len]) ) len++;
// include the ending ; if any
if ( len < maxLen && s[len]==';' ) len++;
// char d = s[len];
// s[len]='\0';
// fprintf(stderr,"got entity %s \n",s);
// s[len]=d;
// we don't have entities longer than "¤"
if ( len > 10 ) return 0;
// all entites are 3 or more chars (>)
if ( len < 3 ) return 0;
// . if it's a numeric entity like { use this routine
// . pass in the whole she-bang: "...;" or "´...;
if ( s[1] == '#' ) {
if ( s[2] == 'x' ) *c = getHexadecimalEntity (s, len );
else *c = getDecimalEntity (s, len );
}
// otherwise, it's text
else *c = getTextEntity ( s , len );
// return 0 if not an entity, length of entity if it is an entity
if ( *c ) return len;
else return 0;
}
// . s[maxLen] should be the NULL
// . returns full length of entity @ "s" if there is a valid one, 0 otherwise
// . sets *c to the iso character the entity represents (if there is one)
// JAB: const-ness for optimizer...
int32_t getEntity_a ( const char *s , int32_t maxLen , uint32_t *c ) {
// ensure there's an & as first char
if ( s[0] != '&' ) {
return 0;
}
// compute maximum length of entity, if it's indeed an entity
int32_t len = 1;
if ( s[len] == '#' ) {
len++;
}
// cut it off after 9 chars to save time
while ( len < maxLen && len < 9 && is_alnum_a( s[len] ) ) {
len++;
}
// character entity reference must end with a semicolon.
// some browsers have lenient parsing, but we don't accept invalid
// references.
if ( len == maxLen || s[len] != ';' ) {
//not a valid character entity reference
return 0;
}
len++;
// we don't have entities longer than "¤"
if ( len > 10 ) {
return 0;
}
// all entites are 3 or more chars (>)
if ( len < 3 ) {
return 0;
}
// . if it's a numeric entity like { use this routine
// . pass in the whole she-bang: "...;" or "´...;
if ( s[1] == '#' ) {
if ( s[2] == 'x' ) {
*c = getHexadecimalEntity( s, len );
} else {
*c = getDecimalEntity( s, len );
}
} else {
// otherwise, it's text
*c = getTextEntity( s, len );
}
// return 0 if not an entity, length of entity if it is an entity
if ( *c ) {
return len;
} else {
return 0;
}
}
// . s[maxLen] should be the NULL
// . returns full length of entity @ "s" if there is a valid one, 0 otherwise
// . sets *c to the iso character the entity represents (if there is one)
// JAB: const-ness for optimizer...
int32_t getEntity_a ( const char *s, int32_t maxLen, uint32_t codepoint[2], int32_t *codepointCount, int32_t *utf8Len ) {
//TODO: handle multi-codepoint entitites
*utf8Len=0;
// ensure there's an & as first char
if ( s[0] != '&' ) {
return 0;
}
// compute maximum length of entity, if it's indeed an entity
int32_t len = 1;
if ( s[len] == '#' ) {
len++;
}
// cut it off after <32> chars to save time and also to avoid parsing
// obscenely long incorrect entitites (eg an ampersand followed by 2MB of letters)
while ( len < maxLen && len < max_entity_name_len && is_alnum_a( s[len] ) ) {
len++;
}
// character entity reference must end with a semicolon.
// some browsers have lenient parsing, but we don't accept invalid
// references.
if ( len == maxLen || s[len] != ';' ) {
//not a valid character entity reference
return 0;
}
len++;
// we don't have entities longer than what w3c specified
if ( len > max_entity_name_len+1 ) {
return 0;
}
// all entites are 3 or more chars (>)
if ( len < 3 ) {
return 0;
}
// . if it's a numeric entity like { use this routine
// . pass in the whole she-bang: "...;" or "´...;
if ( s[1] == '#' ) {
if ( s[2] == 'x' ) {
codepoint[0] = getHexadecimalEntity( s, len );
*codepointCount = 1;
} else {
codepoint[0] = getDecimalEntity( s, len );
*codepointCount = 1;
}
} else {
// otherwise, it's a named entity
const Entity *entity = getTextEntity( s, len );
if(entity) {
memcpy(codepoint, entity->codepoint, entity->codepoints*sizeof(int32_t));
*codepointCount = entity->codepoints;
*utf8Len = (int32_t)entity->utf8Len;
return len;
} else {
return 0; //unknown named entity
}
}
// return 0 if not an entity, length of entity if it is an entity
if ( codepoint[0] ) {
return len;
} else {
return 0;
}
}
