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@ -25,9 +25,15 @@ static const char* lookup(size_t ofs,const char* t) {
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return NULL;
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return NULL;
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}
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}
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static size_t scan_html_inner(const char *src,char *dest,size_t *destlen,int flag) {
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enum htmlmode { /* <a href="http://example.com/"foo">libowfat<home</a> */
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OUTSIDE, /* ^^^^^^^^^^^^^^^^ -> `libowfat<home` */
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TAGARG, /* ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -> `http://example.com/"foo´ */
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};
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static size_t scan_html_inner(const char *src,char *dest,size_t *destlen,enum htmlmode mode) {
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register const unsigned char* s=(const unsigned char*) src;
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register const unsigned char* s=(const unsigned char*) src;
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size_t written=0,i;
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size_t written=0,i;
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int dq=0;
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for (i=0; s[i]; ++i) {
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for (i=0; s[i]; ++i) {
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if (s[i]=='&') {
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if (s[i]=='&') {
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const char* utf8;
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const char* utf8;
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@ -58,7 +64,8 @@ static size_t scan_html_inner(const char *src,char *dest,size_t *destlen,int fla
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continue;
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continue;
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} else
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} else
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dest[written]='&';
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dest[written]='&';
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} else if (flag && s[i]=='<') {
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} else if (s[i]=='<') {
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if (mode == OUTSIDE) break;
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if (case_starts((const char*)s+i+1,"br>")) {
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if (case_starts((const char*)s+i+1,"br>")) {
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dest[written]='\n';
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dest[written]='\n';
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i+=3;
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i+=3;
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@ -68,7 +75,12 @@ static size_t scan_html_inner(const char *src,char *dest,size_t *destlen,int fla
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i+=3;
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i+=3;
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} else
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} else
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dest[written]=s[i];
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dest[written]=s[i];
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} else
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} else if (s[i]=='"' && mode==TAGARG) {
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if (i==0) { dq=1; continue; }
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break;
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} else if (mode==TAGARG && !dq && (s[i]==' ' || s[i]=='\t' || s[i]=='\n'))
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break;
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else
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dest[written]=s[i];
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dest[written]=s[i];
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++written;
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++written;
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}
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}
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@ -77,9 +89,22 @@ static size_t scan_html_inner(const char *src,char *dest,size_t *destlen,int fla
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}
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}
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size_t scan_html_tagarg(const char *src,char *dest,size_t *destlen) {
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size_t scan_html_tagarg(const char *src,char *dest,size_t *destlen) {
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return scan_html_inner(src,dest,destlen,1);
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return scan_html_inner(src,dest,destlen,TAGARG);
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}
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}
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size_t scan_html(const char *src,char *dest,size_t *destlen) {
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size_t scan_html(const char *src,char *dest,size_t *destlen) {
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return scan_html_inner(src,dest,destlen,0);
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return scan_html_inner(src,dest,destlen,OUTSIDE);
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}
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#ifdef UNITTEST
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#include <assert.h>
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int main() {
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char* html="<a href=\"http://example.com/"foo\">libowfat<home</a>";
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char buf[100];
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size_t destlen;
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assert(scan_html(html,buf,&destlen)==0 && destlen==0);
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assert(scan_html(strchr(html,'>')+1,buf,&destlen)==16 && destlen==13 && !memcmp(buf,"libowfat<home",13));
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assert(scan_html_tagarg(strchr(html,'"')+1,buf,&destlen)==28 && destlen==23 && !memcmp(buf,"http://example.com/\"foo",23));
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}
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}
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#endif
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