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Change for more aggressive link-afying of www. and ftp. and user@... text

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This commit is contained in:
rhp%netscape.com 1999-05-14 01:14:41 +00:00
parent a167dc8e88
commit 71b919cc60
1 changed files with 144 additions and 14 deletions
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158
mailnews/mime/src/nsMimeURLUtils.cpp
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@ -59,6 +59,64 @@ nsMimeURLUtils::~nsMimeURLUtils()
{
}
char *
FindAmbitiousMailToTag(const char *line)
{
char *atLoc;
char *workLine;
// Sanity...
if ( (!line) || (!*line) )
return NULL;
// Should I bother at all...
if ( !(atLoc = PL_strchr(line, '@')) )
return NULL;
// create a working copy...
workLine = PL_strdup(line);
if (!workLine)
return NULL;
char *ptr = PL_strchr(workLine, '@');
if (!ptr)
return NULL;
*(ptr+1) = '\0';
--ptr;
while (ptr >= workLine)
{
if (IS_SPACE(*ptr) ||
*ptr == '<' || *ptr == '>' ||
*ptr == '`' || *ptr == ')' ||
*ptr == '\'' || *ptr == '"' ||
*ptr == ']' || *ptr == '}'
)
break;
--ptr;
}
++ptr;
if ( (*ptr == '@') || (!PL_strncasecmp(ptr, "mailto:", 7)) )
return NULL;
else
return (PL_strdup(ptr));
}
nsresult
AmbitiousURLType(const char *URL, PRInt32 *retType, const char *newURLTag)
{
*retType = 0;
if (!PL_strncasecmp(URL,newURLTag, PL_strlen(newURLTag)))
{
*retType = MAILTO_TYPE_URL;
}
return NS_OK;
}
/* from libnet/mkutils.c */
nsresult
nsMimeURLUtils::URLType(const char *URL, PRInt32 *retType)
@ -82,7 +140,8 @@ nsMimeURLUtils::URLType(const char *URL, PRInt32 *retType)
break;
case 'f':
case 'F':
if(!PL_strncasecmp(URL,"ftp:",4))
if ( (!PL_strncasecmp(URL,"ftp:",4)) ||
(!PL_strncasecmp(URL,"ftp.",4)) )
{
*retType = FTP_TYPE_URL;
return NS_OK;
@ -251,6 +310,11 @@ nsMimeURLUtils::URLType(const char *URL, PRInt32 *retType)
*retType = WAIS_TYPE_URL;
return NS_OK;
}
else if(!PL_strncasecmp(URL,"www.",4))
{
*retType = HTTP_TYPE_URL;
return NS_OK;
}
break;
case 'u':
case 'U':
@ -268,6 +332,31 @@ nsMimeURLUtils::URLType(const char *URL, PRInt32 *retType)
return NS_OK;
}
PRBool
IsThisAnAmbitiousLinkType(char *link, char *mailToTag, char **linkPrefix)
{
if (!PL_strncasecmp(link, "www.", 4))
{
*linkPrefix = PL_strdup("http://");
return PR_TRUE;
}
else if (!PL_strncasecmp(link, "ftp.", 4))
{
*linkPrefix = PL_strdup("ftp://");
return PR_TRUE;
}
else if (mailToTag && *mailToTag)
{
if (!PL_strncasecmp(link, mailToTag, PL_strlen(mailToTag)))
{
*linkPrefix = PL_strdup("mailto:");
return PR_TRUE;
}
}
return PR_FALSE;
}
nsresult
nsMimeURLUtils::ScanForURLs(const char *input, int32 input_size,
char *output, int output_size, PRBool urls_only)
@ -282,6 +371,8 @@ nsMimeURLUtils::ScanForURLs(const char *input, int32 input_size,
const char *cite_open2, *cite_close2;
const char* color = NULL;
char *mailToTag = NULL;
if (urls_only)
{
cite_open1 = cite_close1 = "";
@ -382,6 +473,7 @@ nsMimeURLUtils::ScanForURLs(const char *input, int32 input_size,
}
}
mailToTag = FindAmbitiousMailToTag(input);
/* Normal lines are scanned for buried references to URL's
Unfortunately, it may screw up once in a while (nobody's perfect)
*/
@ -393,8 +485,17 @@ nsMimeURLUtils::ScanForURLs(const char *input, int32 input_size,
this lets us match inside "---HTTP://XXX" but not inside of
things like "NotHTTP://xxx"
*/
int type = 0;
URLType(cp, &type);
int type = 0;
PRBool ambitiousHit;
ambitiousHit = PR_FALSE;
if (mailToTag)
AmbitiousURLType(cp, &type, mailToTag);
if (!type)
URLType(cp, &type);
else
ambitiousHit = PR_TRUE;
if(!IS_SPACE(*cp) &&
(cp == input || (!IS_ALPHA(cp[-1]) && !IS_DIGIT(cp[-1]))) &&
(type) != 0)
@ -410,7 +511,6 @@ nsMimeURLUtils::ScanForURLs(const char *input, int32 input_size,
*cp2 == ']' || *cp2 == '}'
)
break;
}
/* Check for certain punctuation characters on the end, and strip
@ -419,7 +519,7 @@ nsMimeURLUtils::ScanForURLs(const char *input, int32 input_size,
(cp2[-1] == '.' || cp2[-1] == ',' || cp2[-1] == '!' ||
cp2[-1] == ';' || cp2[-1] == '-' || cp2[-1] == '?' ||
cp2[-1] == '#'))
cp2--;
cp2--;
col += (cp2 - cp);
@ -433,9 +533,21 @@ nsMimeURLUtils::ScanForURLs(const char *input, int32 input_size,
* And also exclude the builtin icons, whose URLs look
* like "internal-gopher-binary".
*/
if (cp2-cp < 7 ||
(cp2 > cp && cp2[-1] == ':') ||
!PL_strncmp(cp, "internal-", 9))
PRBool invalidHit = PR_FALSE;
if ( (cp2 > cp && cp2[-1] == ':') ||
!PL_strncmp(cp, "internal-", 9) )
invalidHit = PR_TRUE;
if (!invalidHit)
{
if ((ambitiousHit) && ((cp2-cp) < PL_strlen(mailToTag)))
invalidHit = PR_TRUE;
if ( (!ambitiousHit) && (cp2-cp < 7) )
invalidHit = PR_TRUE;
}
if (invalidHit)
{
nsCRT::memcpy(output_ptr, cp, cp2-cp);
output_ptr += (cp2-cp);
@ -443,22 +555,36 @@ nsMimeURLUtils::ScanForURLs(const char *input, int32 input_size,
}
else
{
char *quoted_url;
PRInt32 size_left = output_size - (output_ptr-output);
char *quoted_url;
PRBool rawLink = PR_FALSE;
PRInt32 size_left = output_size - (output_ptr-output);
char *linkPrefix = NULL;
if(cp2-cp > size_left)
return NS_ERROR_OUT_OF_MEMORY;
nsCRT::memcpy(output_ptr, cp, cp2-cp);
output_ptr[cp2-cp] = 0;
rawLink = IsThisAnAmbitiousLinkType(output_ptr, mailToTag, &linkPrefix);
quoted_url = nsEscapeHTML(output_ptr);
if (!quoted_url) return NS_ERROR_OUT_OF_MEMORY;
PR_snprintf(output_ptr, size_left,
"<A HREF=\"%s\">%s</A>",
quoted_url,
quoted_url);
if (rawLink)
PR_snprintf(output_ptr, size_left,
"<A HREF=\"%s%s\">%s</A>",
linkPrefix,
quoted_url,
quoted_url);
else
PR_snprintf(output_ptr, size_left,
"<A HREF=\"%s\">%s</A>",
quoted_url,
quoted_url);
output_ptr += PL_strlen(output_ptr);
PR_Free(quoted_url);
PR_FREEIF(linkPrefix);
output_ptr += PL_strlen(output_ptr);
}
@ -491,6 +617,9 @@ nsMimeURLUtils::ScanForURLs(const char *input, int32 input_size,
*output_ptr++ = *cp;
col++;
}
PR_FREEIF(mailToTag);
mailToTag = FindAmbitiousMailToTag(cp);
}
}
@ -509,6 +638,7 @@ nsMimeURLUtils::ScanForURLs(const char *input, int32 input_size,
output_ptr += PL_strlen (cite_close1);
}
PR_FREEIF(mailToTag);
return NS_OK;
}