webcit-ng/server/text2html.c

   1 // Convert text/plain to text/html
   2 //
   3 // Copyright (c) 2017-2022 by the citadel.org team
   4 //
   5 // This program is open source software.  Use, duplication, or disclosure is subject to the GNU General Public License v3.
   6
   7 #include "webcit.h"
   8
   9
  10 // Convert a text/plain message to text/html
  11 StrBuf *text2html(const char *charset, int treat_as_wiki, char *roomname, long msgnum, StrBuf *Source) {
  12         StrBuf *sj = NULL;
  13
  14         sj = NewStrBuf();
  15         if (!sj) {
  16                 return (sj);
  17         }
  18
  19         StrBufAppendPrintf(sj, "<pre>");
  20         StrEscAppend(sj, Source, NULL, 0, 0);   // FIXME - add code here to activate links
  21         StrBufAppendPrintf(sj, "</pre>\n");
  22
  23         return (sj);
  24 }
  25
  26
  27 // Convert a text/x-citadel-variformat message to text/html
  28 StrBuf *variformat2html(StrBuf * Source) {
  29         StrBuf *Target = NULL;
  30
  31         Target = NewStrBuf();
  32         if (!Target) {
  33                 return (Target);
  34         }
  35
  36         const char *ptr, *pte;
  37         const char *BufPtr = NULL;
  38         StrBuf *Line = NewStrBufPlain(NULL, SIZ);
  39         StrBuf *Line1 = NewStrBufPlain(NULL, SIZ);
  40         StrBuf *Line2 = NewStrBufPlain(NULL, SIZ);
  41         int bn = 0;
  42         int bq = 0;
  43         int i;
  44         long len;
  45         int intext = 0;
  46
  47         if (StrLength(Source) > 0)
  48                 do {
  49                         StrBufSipLine(Line, Source, &BufPtr);
  50                         bq = 0;
  51                         i = 0;
  52                         ptr = ChrPtr(Line);
  53                         len = StrLength(Line);
  54                         pte = ptr + len;
  55
  56                         if ((intext == 1) && (isspace(*ptr))) {
  57                                 StrBufAppendBufPlain(Target, HKEY("<br>"), 0);
  58                         }
  59                         intext = 1;
  60                         if (isspace(*ptr)) {
  61                                 while ((ptr < pte) && ((*ptr == '>') || isspace(*ptr))) {
  62                                         if (*ptr == '>') {
  63                                                 bq++;
  64                                         }
  65                                         ptr++;
  66                                         i++;
  67                                 }
  68                         }
  69
  70                         // Quoted text should be displayed in italics and in a
  71                         // different colour.  This code understands Citadel-style
  72                         // " >" quotes and will convert to <BLOCKQUOTE> tags.
  73                         if (i > 0) {
  74                                 StrBufCutLeft(Line, i);
  75                         }
  76                         for (i = bn; i < bq; i++) {
  77                                 StrBufAppendBufPlain(Target, HKEY("<blockquote>"), 0);
  78                         }
  79                         for (i = bq; i < bn; i++) {
  80                                 StrBufAppendBufPlain(Target, HKEY("</blockquote>"), 0);
  81                         }
  82                         bn = bq;
  83
  84                         if (StrLength(Line) == 0)
  85                                 continue;
  86
  87                         // Activate embedded URL's
  88                         UrlizeText(Line1, Line, Line2);
  89                         StrEscAppend(Target, Line1, NULL, 0, 0);
  90                         StrBufAppendBufPlain(Target, HKEY("\n"), 0);
  91                 }
  92                 while ((BufPtr != StrBufNOTNULL) && (BufPtr != NULL));
  93
  94         for (i = 0; i < bn; i++) {
  95                 StrBufAppendBufPlain(Target, HKEY("</blockquote>"), 0);
  96         }
  97         StrBufAppendBufPlain(Target, HKEY("<br>\n"), 0);
  98         FreeStrBuf(&Line);
  99         FreeStrBuf(&Line1);
 100         FreeStrBuf(&Line2);
 101         return(Target);
 102 }