webcit-ng/text2html.c

   1 /*
   2  * Convert text/plain to text/html
   3  *
   4  * Copyright (c) 2017-2018 by the citadel.org team
   5  *
   6  * This program is open source software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License, version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "webcit.h"
  16
  17
  18 /*
  19  * Convert a text/plain message to text/html
  20  */
  21 StrBuf *text2html(const char *supplied_charset, int treat_as_wiki, char *roomname, long msgnum, StrBuf * Source)
  22 {
  23         StrBuf *sj = NULL;
  24
  25         sj = NewStrBuf();
  26         if (!sj) {
  27                 return (sj);
  28         }
  29
  30         StrBufAppendPrintf(sj, "<pre>");
  31         StrEscAppend(sj, Source, NULL, 0, 0);   // FIXME - add code here to activate links
  32         StrBufAppendPrintf(sj, "</pre>\n");
  33
  34         return (sj);
  35 }
  36
  37
  38 /*
  39  * Convert a text/x-citadel-variformat message to text/html
  40  */
  41 StrBuf *variformat2html(StrBuf * Source)
  42 {
  43         StrBuf *Target = NULL;
  44
  45         Target = NewStrBuf();
  46         if (!Target) {
  47                 return (Target);
  48         }
  49
  50         const char *ptr, *pte;
  51         const char *BufPtr = NULL;
  52         StrBuf *Line = NewStrBufPlain(NULL, SIZ);
  53         StrBuf *Line1 = NewStrBufPlain(NULL, SIZ);
  54         StrBuf *Line2 = NewStrBufPlain(NULL, SIZ);
  55         int bn = 0;
  56         int bq = 0;
  57         int i;
  58         long len;
  59         int intext = 0;
  60
  61         if (StrLength(Source) > 0)
  62                 do {
  63                         StrBufSipLine(Line, Source, &BufPtr);
  64                         bq = 0;
  65                         i = 0;
  66                         ptr = ChrPtr(Line);
  67                         len = StrLength(Line);
  68                         pte = ptr + len;
  69
  70                         if ((intext == 1) && (isspace(*ptr))) {
  71                                 StrBufAppendBufPlain(Target, HKEY("<br>"), 0);
  72                         }
  73                         intext = 1;
  74                         if (isspace(*ptr)) {
  75                                 while ((ptr < pte) && ((*ptr == '>') || isspace(*ptr))) {
  76                                         if (*ptr == '>') {
  77                                                 bq++;
  78                                         }
  79                                         ptr++;
  80                                         i++;
  81                                 }
  82                         }
  83
  84                         /*
  85                          * Quoted text should be displayed in italics and in a
  86                          * different colour.  This code understands Citadel-style
  87                          * " >" quotes and will convert to <BLOCKQUOTE> tags.
  88                          */
  89                         if (i > 0)
  90                                 StrBufCutLeft(Line, i);
  91
  92                         for (i = bn; i < bq; i++)
  93                                 StrBufAppendBufPlain(Target, HKEY("<blockquote>"), 0);
  94                         for (i = bq; i < bn; i++)
  95                                 StrBufAppendBufPlain(Target, HKEY("</blockquote>"), 0);
  96                         bn = bq;
  97
  98                         if (StrLength(Line) == 0)
  99                                 continue;
 100
 101                         /* Activate embedded URL's */
 102                         UrlizeText(Line1, Line, Line2);
 103
 104                         StrEscAppend(Target, Line1, NULL, 0, 0);
 105
 106                         StrBufAppendBufPlain(Target, HKEY("\n"), 0);
 107                 }
 108                 while ((BufPtr != StrBufNOTNULL) && (BufPtr != NULL));
 109
 110         for (i = 0; i < bn; i++) {
 111                 StrBufAppendBufPlain(Target, HKEY("</blockquote>"), 0);
 112         }
 113         StrBufAppendBufPlain(Target, HKEY("<br>\n"), 0);
 114         FreeStrBuf(&Line);
 115         FreeStrBuf(&Line1);
 116         FreeStrBuf(&Line2);
 117         return (Target);
 118 }