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/* $Id: parsetagx.c,v 1.17 2006/04/07 15:38:42 inu Exp $ */
#include "fm.h"
#include "myctype.h"
#include "indep.h"
#include "Str.h"
#include "parsetagx.h"
#include "hash.h"
#include "html.c"
/* parse HTML tag */
static int noConv(char *, char **);
static int toNumber(char *, int *);
static int toLength(char *, int *);
static int toAlign(char *, int *);
static int toVAlign(char *, int *);
/* *INDENT-OFF* */
static int (*toValFunc[]) () = {
noConv, /* VTYPE_NONE */
noConv, /* VTYPE_STR */
toNumber, /* VTYPE_NUMBER */
toLength, /* VTYPE_LENGTH */
toAlign, /* VTYPE_ALIGN */
toVAlign, /* VTYPE_VALIGN */
noConv, /* VTYPE_ACTION */
noConv, /* VTYPE_ENCTYPE */
noConv, /* VTYPE_METHOD */
noConv, /* VTYPE_MLENGTH */
noConv, /* VTYPE_TYPE */
};
/* *INDENT-ON* */
static int
noConv(char *oval, char **str)
{
*str = oval;
return 1;
}
static int
toNumber(char *oval, int *num)
{
char *ep;
int x;
x = strtol(oval, &ep, 10);
if (ep > oval) {
*num = x;
return 1;
}
else
return 0;
}
static int
toLength(char *oval, int *len)
{
int w;
if (!IS_DIGIT(oval[0]))
return 0;
w = atoi(oval);
if (w < 0)
return 0;
if (w == 0)
w = 1;
if (oval[strlen(oval) - 1] == '%')
*len = -w;
else
*len = w;
return 1;
}
static int
toAlign(char *oval, int *align)
{
if (strcasecmp(oval, "left") == 0)
*align = ALIGN_LEFT;
else if (strcasecmp(oval, "right") == 0)
*align = ALIGN_RIGHT;
else if (strcasecmp(oval, "center") == 0)
*align = ALIGN_CENTER;
else if (strcasecmp(oval, "top") == 0)
*align = ALIGN_TOP;
else if (strcasecmp(oval, "bottom") == 0)
*align = ALIGN_BOTTOM;
else if (strcasecmp(oval, "middle") == 0)
*align = ALIGN_MIDDLE;
else
return 0;
return 1;
}
static int
toVAlign(char *oval, int *valign)
{
if (strcasecmp(oval, "top") == 0 || strcasecmp(oval, "baseline") == 0)
*valign = VALIGN_TOP;
else if (strcasecmp(oval, "bottom") == 0)
*valign = VALIGN_BOTTOM;
else if (strcasecmp(oval, "middle") == 0)
*valign = VALIGN_MIDDLE;
else
return 0;
return 1;
}
extern Hash_si tagtable;
#define MAX_TAG_LEN 64
struct parsed_tag *
parse_tag(char **s, int internal)
{
struct parsed_tag *tag = NULL;
int tag_id;
char tagname[MAX_TAG_LEN], attrname[MAX_TAG_LEN];
char *p, *q;
int i, attr_id = 0, nattr;
/* Parse tag name */
q = (*s) + 1;
p = tagname;
if (*q == '/') {
*(p++) = *(q++);
SKIP_BLANKS(q);
}
while (*q && !IS_SPACE(*q) && !(tagname[0] != '/' && *q == '/') &&
*q != '>' && p - tagname < MAX_TAG_LEN - 1) {
*(p++) = TOLOWER(*q);
q++;
}
*p = '\0';
while (*q && !IS_SPACE(*q) && !(tagname[0] != '/' && *q == '/') &&
*q != '>')
q++;
tag_id = getHash_si(&tagtable, tagname, HTML_UNKNOWN);
if (tag_id == HTML_UNKNOWN ||
(!internal && TagMAP[tag_id].flag & TFLG_INT))
goto skip_parse_tagarg;
tag = New(struct parsed_tag);
bzero(tag, sizeof(struct parsed_tag));
tag->tagid = tag_id;
if ((nattr = TagMAP[tag_id].max_attribute) > 0) {
tag->attrid = NewAtom_N(unsigned char, nattr);
tag->value = New_N(char *, nattr);
tag->map = NewAtom_N(unsigned char, MAX_TAGATTR);
memset(tag->map, MAX_TAGATTR, MAX_TAGATTR);
memset(tag->attrid, ATTR_UNKNOWN, nattr);
for (i = 0; i < nattr; i++)
tag->map[TagMAP[tag_id].accept_attribute[i]] = i;
}
/* Parse tag arguments */
SKIP_BLANKS(q);
while (1) {
Str value = NULL;
if (*q == '>' || *q == '\0')
goto done_parse_tag;
p = attrname;
while (*q && *q != '=' && !IS_SPACE(*q) &&
*q != '>' && p - attrname < MAX_TAG_LEN - 1) {
*(p++) = TOLOWER(*q);
q++;
}
*p = '\0';
while (*q && *q != '=' && !IS_SPACE(*q) && *q != '>')
q++;
SKIP_BLANKS(q);
if (*q == '=') {
/* get value */
value = Strnew();
q++;
SKIP_BLANKS(q);
if (*q == '"') {
q++;
while (*q && *q != '"') {
if (*q != '\n')
Strcat_char(value, *q);
else
Strcat_char(value, ' ');
if (!tag->need_reconstruct && is_html_quote(*q))
tag->need_reconstruct = TRUE;
q++;
}
if (*q == '"')
q++;
}
else if (*q == '\'') {
q++;
while (*q && *q != '\'') {
if (*q != '\n')
Strcat_char(value, *q);
else
Strcat_char(value, ' ');
if (!tag->need_reconstruct && is_html_quote(*q))
tag->need_reconstruct = TRUE;
q++;
}
if (*q == '\'')
q++;
}
else if (*q) {
while (*q && !IS_SPACE(*q) && *q != '>') {
Strcat_char(value, *q);
if (!tag->need_reconstruct && is_html_quote(*q))
tag->need_reconstruct = TRUE;
q++;
}
}
}
for (i = 0; i < nattr; i++) {
if ((tag)->attrid[i] == ATTR_UNKNOWN &&
strcmp(AttrMAP[TagMAP[tag_id].accept_attribute[i]].name,
attrname) == 0) {
attr_id = TagMAP[tag_id].accept_attribute[i];
break;
}
}
if (i != nattr) {
if (!internal &&
((AttrMAP[attr_id].flag & AFLG_INT) ||
(value && AttrMAP[attr_id].vtype == VTYPE_METHOD &&
!strcasecmp(value->ptr, "internal")))) {
tag->need_reconstruct = TRUE;
continue;
}
tag->attrid[i] = attr_id;
if (value)
tag->value[i] = html_unquote(value->ptr);
else
tag->value[i] = NULL;
}
else {
tag->need_reconstruct = TRUE;
}
}
skip_parse_tagarg:
while (*q != '>' && *q)
q++;
done_parse_tag:
if (*q == '>')
q++;
*s = q;
return tag;
}
int
parsedtag_set_value(struct parsed_tag *tag, int id, char *value)
{
int i;
if (!parsedtag_accepts(tag, id))
return 0;
i = tag->map[id];
tag->attrid[i] = id;
if (value)
tag->value[i] = allocStr(value, -1);
else
tag->value[i] = NULL;
tag->need_reconstruct = TRUE;
return 1;
}
int
parsedtag_get_value(struct parsed_tag *tag, int id, void *value)
{
int i;
if (!parsedtag_exists(tag, id) || !tag->value[i = tag->map[id]])
return 0;
return toValFunc[AttrMAP[id].vtype] (tag->value[i], value);
}
Str
parsedtag2str(struct parsed_tag *tag)
{
int i;
int tag_id = tag->tagid;
int nattr = TagMAP[tag_id].max_attribute;
Str tagstr = Strnew();
Strcat_char(tagstr, '<');
Strcat_charp(tagstr, TagMAP[tag_id].name);
for (i = 0; i < nattr; i++) {
if (tag->attrid[i] != ATTR_UNKNOWN) {
Strcat_char(tagstr, ' ');
Strcat_charp(tagstr, AttrMAP[tag->attrid[i]].name);
if (tag->value[i])
Strcat(tagstr, Sprintf("=\"%s\"", html_quote(tag->value[i])));
}
}
Strcat_char(tagstr, '>');
return tagstr;
}
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