webcit-ng/text2html.c

   1 //
   2 // Convert text/plain to text/html
   3 //
   4 // Copyright (c) 2017-2021 by the citadel.org team
   5 //
   6 // This program is open source software.  It runs great on the
   7 // Linux operating system (and probably elsewhere).  You can use,
   8 // copy, and run it under the terms of the GNU General Public
   9 // License version 3.
  10 //
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 #include "webcit.h"
  17
  18
  19 // Convert a text/plain message to text/html
  20 StrBuf *text2html(const char *supplied_charset, int treat_as_wiki, char *roomname, long msgnum, StrBuf *Source) {
  21         StrBuf *sj = NULL;
  22
  23         sj = NewStrBuf();
  24         if (!sj) {
  25                 return (sj);
  26         }
  27
  28         StrBufAppendPrintf(sj, "<pre>");
  29         StrEscAppend(sj, Source, NULL, 0, 0);   // FIXME - add code here to activate links
  30         StrBufAppendPrintf(sj, "</pre>\n");
  31
  32         return (sj);
  33 }
  34
  35
  36 // Convert a text/x-citadel-variformat message to text/html
  37 StrBuf *variformat2html(StrBuf * Source) {
  38         StrBuf *Target = NULL;
  39
  40         Target = NewStrBuf();
  41         if (!Target) {
  42                 return (Target);
  43         }
  44
  45         const char *ptr, *pte;
  46         const char *BufPtr = NULL;
  47         StrBuf *Line = NewStrBufPlain(NULL, SIZ);
  48         StrBuf *Line1 = NewStrBufPlain(NULL, SIZ);
  49         StrBuf *Line2 = NewStrBufPlain(NULL, SIZ);
  50         int bn = 0;
  51         int bq = 0;
  52         int i;
  53         long len;
  54         int intext = 0;
  55
  56         if (StrLength(Source) > 0)
  57                 do {
  58                         StrBufSipLine(Line, Source, &BufPtr);
  59                         bq = 0;
  60                         i = 0;
  61                         ptr = ChrPtr(Line);
  62                         len = StrLength(Line);
  63                         pte = ptr + len;
  64
  65                         if ((intext == 1) && (isspace(*ptr))) {
  66                                 StrBufAppendBufPlain(Target, HKEY("<br>"), 0);
  67                         }
  68                         intext = 1;
  69                         if (isspace(*ptr)) {
  70                                 while ((ptr < pte) && ((*ptr == '>') || isspace(*ptr))) {
  71                                         if (*ptr == '>') {
  72                                                 bq++;
  73                                         }
  74                                         ptr++;
  75                                         i++;
  76                                 }
  77                         }
  78
  79                         // Quoted text should be displayed in italics and in a
  80                         // different colour.  This code understands Citadel-style
  81                         // " >" quotes and will convert to <BLOCKQUOTE> tags.
  82                         if (i > 0) {
  83                                 StrBufCutLeft(Line, i);
  84                         }
  85                         for (i = bn; i < bq; i++) {
  86                                 StrBufAppendBufPlain(Target, HKEY("<blockquote>"), 0);
  87                         }
  88                         for (i = bq; i < bn; i++) {
  89                                 StrBufAppendBufPlain(Target, HKEY("</blockquote>"), 0);
  90                         }
  91                         bn = bq;
  92
  93                         if (StrLength(Line) == 0)
  94                                 continue;
  95
  96                         // Activate embedded URL's
  97                         UrlizeText(Line1, Line, Line2);
  98                         StrEscAppend(Target, Line1, NULL, 0, 0);
  99                         StrBufAppendBufPlain(Target, HKEY("\n"), 0);
 100                 }
 101                 while ((BufPtr != StrBufNOTNULL) && (BufPtr != NULL));
 102
 103         for (i = 0; i < bn; i++) {
 104                 StrBufAppendBufPlain(Target, HKEY("</blockquote>"), 0);
 105         }
 106         StrBufAppendBufPlain(Target, HKEY("<br>\n"), 0);
 107         FreeStrBuf(&Line);
 108         FreeStrBuf(&Line1);
 109         FreeStrBuf(&Line2);
 110         return(Target);
 111 }