* migrate message creation to templates (citing still missing)

[citadel.git] / webcit / html2html.c

diff --git a/webcit/html2html.c b/webcit/html2html.c
index 7d3e597ae2b07a0229e491f1855b51c6ce14995a..e77c2a13ed7c3dbc62a3e46cf5b64f1fba1b3a95 100644 (file)
--- a/webcit/html2html.c
+++ b/webcit/html2html.c
@@ -480,4 +480,147 @@ BAIL:     /** A little trailing vertical whitespace... */
        if ((msg != NULL) && (Source == NULL)) free(msg);
 }
 
+
+
+
+
+
+/*
+ * Look for URL's embedded in a buffer and make them linkable.  We use a
+ * target window in order to keep the Citadel session in its own window.
+ */
+void UrlizeText(StrBuf* Target, StrBuf *Source, StrBuf *WrkBuf)
+{
+       int len, UrlLen, Offset, TrailerLen;
+       const char *start, *end, *pos;
+       
+       FlushStrBuf(Target);
+
+       start = NULL;
+       len = StrLength(Source);
+       end = ChrPtr(Source) + len;
+       for (pos = ChrPtr(Source); (pos < end) && (start == NULL); ++pos) {
+               if (!strncasecmp(pos, "http://", 7))
+                       start = pos;
+               if (!strncasecmp(pos, "ftp://", 6))
+                       start = pos;
+       }
+
+       if (start == NULL) {
+               StrBufAppendBuf(Target, Source, 0);
+               return;
+       }
+       FlushStrBuf(WrkBuf);
+
+       for (pos = ChrPtr(Source) + len; pos > start; --pos) {
+               if (  (!isprint(*pos))
+                  || (isspace(*pos))
+                  || (*pos == '{')
+                  || (*pos == '}')
+                  || (*pos == '|')
+                  || (*pos == '\\')
+                  || (*pos == '^')
+                  || (*pos == '[')
+                  || (*pos == ']')
+                  || (*pos == '`')
+                  || (*pos == '<')
+                  || (*pos == '>')
+                  || (*pos == '(')
+                  || (*pos == ')')
+               ) {
+                       end = pos;
+               }
+       }
+       
+       UrlLen = end - start;
+       StrBufAppendBufPlain(WrkBuf, start, UrlLen, 0);
+
+       Offset = start - ChrPtr(Source);
+       if (Offset != 0)
+               StrBufAppendBufPlain(Target, ChrPtr(Source), Offset, 0);
+       StrBufAppendPrintf(Target, "%ca href=%c%s%c TARGET=%c%s%c%c%s%c/A%c",
+                          LB, QU, ChrPtr(WrkBuf), QU, QU, TARGET, 
+                          QU, RB, ChrPtr(WrkBuf), LB, RB);
+
+       TrailerLen = len - (end - start);
+       if (TrailerLen > 0)
+               StrBufAppendBufPlain(Target, end, TrailerLen, 0);
+}
+void url(char *buf, size_t bufsize)
+{
+       int len, UrlLen, Offset, TrailerLen, outpos;
+       char *start, *end, *pos;
+       char urlbuf[SIZ];
+       char outbuf[SIZ];
+
+       start = NULL;
+       len = strlen(buf);
+       if (len > bufsize) {
+               lprintf(1, "URL: content longer than buffer!");
+               return;
+       }
+       end = buf + len;
+       for (pos = buf; (pos < end) && (start == NULL); ++pos) {
+               if (!strncasecmp(pos, "http://", 7))
+                       start = pos;
+               if (!strncasecmp(pos, "ftp://", 6))
+                       start = pos;
+       }
+
+       if (start == NULL)
+               return;
+
+       for (pos = buf+len; pos > start; --pos) {
+               if (  (!isprint(*pos))
+                  || (isspace(*pos))
+                  || (*pos == '{')
+                  || (*pos == '}')
+                  || (*pos == '|')
+                  || (*pos == '\\')
+                  || (*pos == '^')
+                  || (*pos == '[')
+                  || (*pos == ']')
+                  || (*pos == '`')
+                  || (*pos == '<')
+                  || (*pos == '>')
+                  || (*pos == '(')
+                  || (*pos == ')')
+               ) {
+                       end = pos;
+               }
+       }
+       
+       UrlLen = end - start;
+       if (UrlLen > sizeof(urlbuf)){
+               lprintf(1, "URL: content longer than buffer!");
+               return;
+       }
+       memcpy(urlbuf, start, UrlLen);
+       urlbuf[UrlLen] = '\0';
+
+       Offset = start - buf;
+       if ((Offset != 0) && (Offset < sizeof(outbuf)))
+               memcpy(outbuf, buf, Offset);
+       outpos = snprintf(&outbuf[Offset], sizeof(outbuf) - Offset,  
+                         "%ca href=%c%s%c TARGET=%c%s%c%c%s%c/A%c",
+                         LB, QU, urlbuf, QU, QU, TARGET, QU, RB, urlbuf, LB, RB);
+       if (outpos >= sizeof(outbuf) - Offset) {
+               lprintf(1, "URL: content longer than buffer!");
+               return;
+       }
+
+       TrailerLen = len - (end - start);
+       if (TrailerLen > 0)
+               memcpy(outbuf + Offset + outpos, end, TrailerLen);
+       if (Offset + outpos + TrailerLen > bufsize) {
+               lprintf(1, "URL: content longer than buffer!");
+               return;
+       }
+       memcpy (buf, outbuf, Offset + outpos + TrailerLen);
+       *(buf + Offset + outpos + TrailerLen) = '\0';
+}
+
+
+
+
 /*@}*/