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
   6 // disclosure are subject to the GNU General Public License v3.
   7
   8 #include "webcit.h"
   9
  10
  11 // Convert a text/plain message to text/html
  12 StrBuf *text2html(const char *supplied_charset, int treat_as_wiki, char *roomname, long msgnum, StrBuf *Source) {
  13         StrBuf *sj = NULL;
  14
  15         sj = NewStrBuf();
  16         if (!sj) {
  17                 return (sj);
  18         }
  19
  20         StrBufAppendPrintf(sj, "<pre>");
  21         StrEscAppend(sj, Source, NULL, 0, 0);   // FIXME - add code here to activate links
  22         StrBufAppendPrintf(sj, "</pre>\n");
  23
  24         return (sj);
  25 }
  26
  27
  28 // Convert a text/x-citadel-variformat message to text/html
  29 StrBuf *variformat2html(StrBuf * Source) {
  30         StrBuf *Target = NULL;
  31
  32         Target = NewStrBuf();
  33         if (!Target) {
  34                 return (Target);
  35         }
  36
  37         const char *ptr, *pte;
  38         const char *BufPtr = NULL;
  39         StrBuf *Line = NewStrBufPlain(NULL, SIZ);
  40         StrBuf *Line1 = NewStrBufPlain(NULL, SIZ);
  41         StrBuf *Line2 = NewStrBufPlain(NULL, SIZ);
  42         int bn = 0;
  43         int bq = 0;
  44         int i;
  45         long len;
  46         int intext = 0;
  47
  48         if (StrLength(Source) > 0)
  49                 do {
  50                         StrBufSipLine(Line, Source, &BufPtr);
  51                         bq = 0;
  52                         i = 0;
  53                         ptr = ChrPtr(Line);
  54                         len = StrLength(Line);
  55                         pte = ptr + len;
  56
  57                         if ((intext == 1) && (isspace(*ptr))) {
  58                                 StrBufAppendBufPlain(Target, HKEY("<br>"), 0);
  59                         }
  60                         intext = 1;
  61                         if (isspace(*ptr)) {
  62                                 while ((ptr < pte) && ((*ptr == '>') || isspace(*ptr))) {
  63                                         if (*ptr == '>') {
  64                                                 bq++;
  65                                         }
  66                                         ptr++;
  67                                         i++;
  68                                 }
  69                         }
  70
  71                         // Quoted text should be displayed in italics and in a
  72                         // different colour.  This code understands Citadel-style
  73                         // " >" quotes and will convert to <BLOCKQUOTE> tags.
  74                         if (i > 0) {
  75                                 StrBufCutLeft(Line, i);
  76                         }
  77                         for (i = bn; i < bq; i++) {
  78                                 StrBufAppendBufPlain(Target, HKEY("<blockquote>"), 0);
  79                         }
  80                         for (i = bq; i < bn; i++) {
  81                                 StrBufAppendBufPlain(Target, HKEY("</blockquote>"), 0);
  82                         }
  83                         bn = bq;
  84
  85                         if (StrLength(Line) == 0)
  86                                 continue;
  87
  88                         // Activate embedded URL's
  89                         UrlizeText(Line1, Line, Line2);
  90                         StrEscAppend(Target, Line1, NULL, 0, 0);
  91                         StrBufAppendBufPlain(Target, HKEY("\n"), 0);
  92                 }
  93                 while ((BufPtr != StrBufNOTNULL) && (BufPtr != NULL));
  94
  95         for (i = 0; i < bn; i++) {
  96                 StrBufAppendBufPlain(Target, HKEY("</blockquote>"), 0);
  97         }
  98         StrBufAppendBufPlain(Target, HKEY("<br>\n"), 0);
  99         FreeStrBuf(&Line);
 100         FreeStrBuf(&Line1);
 101         FreeStrBuf(&Line2);
 102         return(Target);
 103 }