webcit-ng/text2html.c

   1 //
   2 // Convert text/plain to text/html
   3 //
   4 // Copyright (c) 2017-2022 by the citadel.org team
   5 //
   6 // This program is open source software.  Use, duplication, or
   7 // disclosure are subject to the GNU General Public License v3.
   8
   9 #include "webcit.h"
  10
  11
  12 // Convert a text/plain message to text/html
  13 StrBuf *text2html(const char *supplied_charset, int treat_as_wiki, char *roomname, long msgnum, StrBuf *Source) {
  14         StrBuf *sj = NULL;
  15
  16         sj = NewStrBuf();
  17         if (!sj) {
  18                 return (sj);
  19         }
  20
  21         StrBufAppendPrintf(sj, "<pre>");
  22         StrEscAppend(sj, Source, NULL, 0, 0);   // FIXME - add code here to activate links
  23         StrBufAppendPrintf(sj, "</pre>\n");
  24
  25         return (sj);
  26 }
  27
  28
  29 // Convert a text/x-citadel-variformat message to text/html
  30 StrBuf *variformat2html(StrBuf * Source) {
  31         StrBuf *Target = NULL;
  32
  33         Target = NewStrBuf();
  34         if (!Target) {
  35                 return (Target);
  36         }
  37
  38         const char *ptr, *pte;
  39         const char *BufPtr = NULL;
  40         StrBuf *Line = NewStrBufPlain(NULL, SIZ);
  41         StrBuf *Line1 = NewStrBufPlain(NULL, SIZ);
  42         StrBuf *Line2 = NewStrBufPlain(NULL, SIZ);
  43         int bn = 0;
  44         int bq = 0;
  45         int i;
  46         long len;
  47         int intext = 0;
  48
  49         if (StrLength(Source) > 0)
  50                 do {
  51                         StrBufSipLine(Line, Source, &BufPtr);
  52                         bq = 0;
  53                         i = 0;
  54                         ptr = ChrPtr(Line);
  55                         len = StrLength(Line);
  56                         pte = ptr + len;
  57
  58                         if ((intext == 1) && (isspace(*ptr))) {
  59                                 StrBufAppendBufPlain(Target, HKEY("<br>"), 0);
  60                         }
  61                         intext = 1;
  62                         if (isspace(*ptr)) {
  63                                 while ((ptr < pte) && ((*ptr == '>') || isspace(*ptr))) {
  64                                         if (*ptr == '>') {
  65                                                 bq++;
  66                                         }
  67                                         ptr++;
  68                                         i++;
  69                                 }
  70                         }
  71
  72                         // Quoted text should be displayed in italics and in a
  73                         // different colour.  This code understands Citadel-style
  74                         // " >" quotes and will convert to <BLOCKQUOTE> tags.
  75                         if (i > 0) {
  76                                 StrBufCutLeft(Line, i);
  77                         }
  78                         for (i = bn; i < bq; i++) {
  79                                 StrBufAppendBufPlain(Target, HKEY("<blockquote>"), 0);
  80                         }
  81                         for (i = bq; i < bn; i++) {
  82                                 StrBufAppendBufPlain(Target, HKEY("</blockquote>"), 0);
  83                         }
  84                         bn = bq;
  85
  86                         if (StrLength(Line) == 0)
  87                                 continue;
  88
  89                         // Activate embedded URL's
  90                         UrlizeText(Line1, Line, Line2);
  91                         StrEscAppend(Target, Line1, NULL, 0, 0);
  92                         StrBufAppendBufPlain(Target, HKEY("\n"), 0);
  93                 }
  94                 while ((BufPtr != StrBufNOTNULL) && (BufPtr != NULL));
  95
  96         for (i = 0; i < bn; i++) {
  97                 StrBufAppendBufPlain(Target, HKEY("</blockquote>"), 0);
  98         }
  99         StrBufAppendBufPlain(Target, HKEY("<br>\n"), 0);
 100         FreeStrBuf(&Line);
 101         FreeStrBuf(&Line1);
 102         FreeStrBuf(&Line2);
 103         return(Target);
 104 }